Entries |
Document | Title | Date |
20080228179 | ELECTROCAUTERY METHOD AND APPARATUS - An electrode structure and a mechanism for automated or user-selected operation or compensation of the electrodes, for example to determine tissue coverage and/or prevent arcing between bottom electrodes during electrocautery is disclosed. | 09-18-2008 |
20080243113 | MODIFICATION OF STENT SURFACES TO IMPART FUNCTIONALITY - In one aspect, the invention relates to coated substrates comprising a substrate having a surface, a cationic polymer layer adjacent the surface of the substrate, an anionic polymer layer adjacent the cationic polymer layer and methods for producing and using same. In one aspect, the cationic polymer layer comprises at least one residue of a first compound having the structure: | 10-02-2008 |
20080255553 | RADIOFREQUENCY ABLATION DEVICE - A RF ablation device includes a probe assembly that has an elongate cannula having a lumen disposed interiorly of an external wall of the cannula. The elongate cannula includes a plurality of slots formed within the external wall that provide access to the lumen. The probe assembly includes an electrode member that is slidably disposed within the elongate cannula, the electrode member including a plurality of tines configured for passage through the plurality of slots. The slots are disposed in a staggered arrangement or pattern about the external wall of the cannula. The staggered arrangement of slots may be used in a monopolar or bipolar arrangement of the electrodes on the cannula. A bipolar arrangement of electrodes using the staggered configuration produces larger ablation areas in a shorter period of time as compared to prior designs. | 10-16-2008 |
20080262489 | Thrombus removal - A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of thrombus from a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other energy delivery surfaces. The electrode structures may be radially inwardly oriented and/or supported in cantilever to facilitate advancing the electrodes. | 10-23-2008 |
20080275436 | Radiation Applicator and Method of Radiating Tissue - A radiation applicator ( | 11-06-2008 |
20080275437 | CONNECTOR DEVICE FOR ELECTROPHYSIOLOGY PROBE - A flexible connector for securing an ablation probe in a looped configuration around the pulmonary veins of a heart includes a flexible base member having first and second apertures dimensioned to receive the ablation probe and wherein the flexible base member is slidable along a length of the ablation probe when the ablation probe is positioned within the first and second apertures. The flexible base member further includes a third aperture dimensioned to receive a looped portion of the ablation probe. The flexible connector is advanced along the length of the ablation probe to form a crossover point with the returning portion of the ablation probe. A tether is secured to the flexible base member and is used to withdraw or remove the flexible connector. | 11-06-2008 |
20080281312 | Ablation Therapy System and Method for Treating Continuous Atrial Fibrillation - An ablation therapy system and systematic method is provided for treating continuous atrial fibrillation. The therapy system includes a Multi-Channel RF Ablation Generator, an ECG interface, an assembly of at least three ablation catheters, and an ECG interface operably coupling and interfacing the catheters to both an ECG unit and the RF Ablation Generator. The systematic method includes transseptally accessing the Left Atrium (LA) through the septum of the patient's heart, and performing an endocardial pulmonary vein ablation procedure on the pulmonary vein ostial tissue surrounding one or more pulmonary veins in a manner treating aberrant conductive pathways therethrough. After performing the pulmonary vein ablation, the method further includes performing an endocardial atrial septum ablation procedure on the septal tissue in a manner treating aberrant conductive pathways therethrough. | 11-13-2008 |
20080294155 | Radiation Applicator and Method of Radiating Tissue - A dipole microwave applicator emits microwave radiation into tissue to be treated. The applicator is formed from a thin coax cable having an inner conductor surrounded by an insulator, which is surrounded by an outer conductor. A portion of the inner conductor extends beyond the insulator and the outer conductor. A ferrule at the end of the outer conductor has a step and a sleeve that surrounds a portion of the extended inner conductor. A tuning washer is attached to the end of the extended inner conductor. A dielectric tip encloses the tuning washer, the extended inner conductor, and the sleeve of the ferrule. The sleeve of the ferrule and the extended inner conductor operate as the two arms of the dipole microwave antenna. The tuning washer faces the step in the ferrule, and is sized and shaped to cooperate with the step in balancing and tuning the applicator. | 11-27-2008 |
20080319434 | Reflective power monitoring for microwave applications - A system and method for supplying microwave energy to tissue for microwave therapy includes an electrosurgical generator having an output for coupling to a surgical instrument. The electrosurgical generator includes a microwave energy source and a controller for controlling the operation of the electrosurgical generator. The surgical instrument, coupled to the electrosurgical generator, includes a microwave antenna for delivering microwave energy from the microwave energy source. The controller of the electrosurgical generator is operable for causing the electrosurgical generator to apply at least two pulses of microwave energy. | 12-25-2008 |
20080319435 | SHAPE-CHANGING TISSUE CONSTRICTOR AND METHODS OF USE - A tissue constrictor includes one or more shape-changing materials that when activated aids in constricting a portion of an organ or tissue in the body. In one embodiment, the constrictor conducts electrosurgical or ablation energy to section tissue. | 12-25-2008 |
20080319436 | Devices and Methods for Thermal Ablation of Biological Tissue Using Geometric Ablation Patterns - A tissue ablation system including numerous components and methods is described herein for encircling target tissue and generating tissue ablation volumes in various biological tissues. The biological tissue includes tissue of a variety of organs of the human body including the liver, spleen, kidney, lung, breast and other organs, but is not so limited. The tissue ablation device comprises an energy source and at least one trocar coupled to the energy source, the trocar having a body, a proximal end, and a distal end. The trocar carries an electrode array that comprises a plurality of electrodes, each electrode of the plurality of electrodes is configured to extend from the trocar when moved from a retracted state to a deployed state, and to have at least one radius of curvature in the deployed state so that the electrode array forms a series of shaped electrodes in the deployed state. | 12-25-2008 |
20080319437 | Apparatus and method for selectively heating a deposit in fatty tissue in a body - An apparatus and method for providing hyperthermia treatments to a protruding body portion having fatty tissue surrounding a deposit in the protruding body portion is disclosed. The apparatus includes a cavity for receiving the protruding body portion. A radio frequency antenna array is used to direct a radio frequency signal at a selected frequency into the protruding body portion such as a breast so that the radio frequency signal will have a selected wavelength in the breast to create a circularly polarized radio frequency electromagnetic field to selectively heat the deposit to a temperature greater than the surrounding fatty tissue through resonant heating within the deposit when a diameter of the deposit is within a range of about 0.5 times to 0.16 times the wavelength of the radio frequency signal within the fatty mammary tissue. | 12-25-2008 |
20090012515 | DEVICES, SYSTEMS AND METHODS FOR TREATING TISSUES - Devices, systems and methods for treating a tissue infected with an organism are provided. In certain examples, the device includes an applicator energetically coupled to an electromagnetic energy source to provide electromagnetic energy to the tissue for treatment. The device may also include a controller electrically coupled to the electromagnetic energy source to implement one or more treatment methods. | 01-08-2009 |
20090018534 | MEDICAL PROBES FOR CREATING AND DIAGNOSING CIRCUMFERENTIAL LESIONS WITHIN OR AROUND THE OSTIUM OF A VESSEL - The present inventions provide assemblies, probes, and methods for creating circumferential lesions in tissue, e.g., the tissue within or around the ostium of a vessel. An ablation probe with an ablative structure can be placed in contact within or around the ostium of the vessel. A diagnostic probe can be introduced through a lumen within the ablation probe and inserted into the vessel. The energy can be provided to the ablative structure to create a circumferential lesion within or around the ostium of the vessel, and the diagnostic structure can be used to diagnose the tissue to determine whether the circumferential lesion can be properly created. | 01-15-2009 |
20090018535 | ARTICULATING BIPOLAR ELECTROSURGICAL INSTRUMENT - A bipolar electrosurgical instrument has a pair of pivotable juxtaposed jaw members and a locking mechanism operatively associated with a second of the jaw members. The locking mechanism has a first position engaged with the second jaw member for preventing movement of the second jaw member between an axially aligned orientation and at least one angled orientation, and a second position. The second position is disengaged from the second jaw member allowing for movement of the second jaw member between the axially aligned orientation and the at least one angled orientation. The instrument has an actuation mechanism operatively connected to a first of the jaw members with the actuation mechanism operable to move the first jaw member between an axially aligned first orientation and at least one angled orientation. An articulation knob is operatively associated with the locking mechanism and effectuates independent operation of the locking and actuation mechanisms. | 01-15-2009 |
20090024119 | SURGICAL TREATMENT FOR ATRIAL FIBRILLATION USING RADIOFREQUENCY TECHNOLOGY - Ablation systems and methods for treating atrial fibrillation utilizing RF energy are provided. The system generally includes a first conductive member having a shape which defines a desired lesion pattern or a portion of a desired lesion pattern, and a second conductive member effective to transmit ablative radiation to the first conductive member. The first conductive member is adapted to be positioned on a first tissue surface, and the second conductive member is adapted to be positioned on a second, opposed tissue surface. In use, ablative radiation is transmitted from the second conductive member through the tissue to the first conductive member to form a lesion having the desired lesion pattern. | 01-22-2009 |
20090030410 | Devices for Electrosurgery - Devices for electrosurgery by means of oxy-hydro combustion and methods for use of such devices in electrosurgical procedures. Provided are devices for combustion of oxygen and hydrogen, or other hydrocarbon fuels, wherein oxygen and hydrogen may be generated by electrolysis or oxygen and hydrogen, or other hydrocarbon fuels, may be supplied, such devices including an ignition source and an adjustable and translatable sheath for controlling such reactions. Also provided is a detachable and positionable sheath for controlling reactions and minimizing tissue damage with conventional electrosurgery devices. | 01-29-2009 |
20090030411 | ABLATION CATHETER - Devices, systems and methods are disclosed for the ablation of tissue. Embodiments include an ablation catheter which has an array of ablation elements attached to a deployable carrier assembly. The carrier assembly can be constrained within the lumen of a catheter, and deployed to take on an expanded condition. | 01-29-2009 |
20090036882 | Circumferential electrode array for tissue ablation - An electrode array supports multiple electrodes and energizes them so that adjacent electrodes do not have the same polarity. In one embodiment, the electrodes are held about a circumference outside and surrounding a tumor and opposed electrodes are energized in a round robin fashion to promote current flow through the center of the tumor from a variety of angles. | 02-05-2009 |
20090043298 | ARRANGEMENT AND METHOD FOR VASCULAR ANASTOMOSIS - A method for implementing vascular anastomosis in the attachment of a graft vessel to a target vessel such as a coronary artery, and subsequently creating a passageway between the vessels in order to establish fluid flow communication therebetween. Further is to the provision of novel devices which are utilized in implementing the steps of attaching a graft vessel to a target vessel such as a coronary artery through vascular anastomosis, and thereafter creating a fluid flow passageway therebetween. | 02-12-2009 |
20090048591 | CARDIAC ABLATION SYSTEMS AND METHODS - Cardiac ablation systems and methods of their use and manufacture involve an ablation mechanism, a stabilizer mechanism, and a cinching mechanism that urges the ablation mechanism toward a patient tissue. Embodiments encompass methods for administering epicardial and endocardial lesions, including box lesions and connecting lesions, to patient tissue. | 02-19-2009 |
20090048592 | Electrosurgical instrument - An electrosurgical instrument for the treatment of tissue in the presence of an electrically-conductive fluid medium comprises an instrument shaft ( | 02-19-2009 |
20090054887 | Systems and Methods for Thermally Profiling Radiofrequency Electrodes - Systems and methods for providing radiofrequency (“RF”) energy to a target surgical site are provided. The systems include the use of at least one overlay which is super-imposed over an image of the target surgical site to assist the operator in evaluating parameters for performing the surgical procedure. The disclosure also include methods for creating at least one overlay and for using an overlay in surgical procedures using RF energy. | 02-26-2009 |
20090054888 | RADIATION APPLICATOR - This invention provides an elongate microwave radiator for insertion into a living body to treat tissue at a predetermined operating frequency. The radiator defines a monopole antenna at its tip. The monopole antenna includes a dielectric material surrounding the monopole. The dielectric material is configured to act as a resonator at the predetermined operating frequency, and encompasses generally the whole of a near-field radiation emitted by the monopole. In an illustrative embodiment, the dielectric material extends from the antenna a distance determined in accordance with the wavelength of the radiation in the dielectric. | 02-26-2009 |
20090054889 | Electrosurgical system - An electrosurgical system includes an electrosurgical generator, for generating radio frequency power, and an electrosurgical instrument including an electrode assembly. The electrosurgical instrument is detachably connectible to the generator such that radio frequency power can be conveyed to the electrode assembly. The generator includes a counter incremented each time an electrosurgical instrument is connected to the generator, and the electrosurgical instrument includes a memory device capable of recording the value of the counter when the electrosurgical instrument is connected to the generator. The system further includes a comparison unit capable of comparing the current value of the counter with the value of the counter stored in the memory device, and generating a signal when the difference between the two values of the counter is greater than a predetermined threshold. | 02-26-2009 |
20090062784 | Needle electrode device for medical application - A thermocouple ( | 03-05-2009 |
20090062785 | COMPOSITIONS AND METHODS FOR CANCER TREATMENT USING TARGETED SINGLE-WALLED CARBON NANOTUBES - The present invention is a method for detecting and destroying cancer tumors. The method is based on the concept of associating a linking protein or linking peptide such as, but not limited to, annexin V or other annexins to single-walled carbon nanotubes (SWNT) to form a protein-SWNT complex. Said linking protein or peptide can selectively bind to cancerous cells, especially tumor vasculature endothelial cells, rather than to healthy ones by binding to cancer-specific external receptors such as anionic phospholipids including phosphatidylserine expressed on the outer surfaces of cancer cells only. Irradiation of bound SWNTs with one or more specific electromagnetic wavelengths is then used to detect and destroy those cells to which the SWNTs are bound via the linking protein or peptide thereby destroying the tumor or cancer cells and preferably an immunostimulant is provided to the patient to enhance the immune response against antigens released from the tumor or cancer cells. | 03-05-2009 |
20090069797 | BIPOLAR DEVICES FOR MODIFICATION OF AIRWAYS BY TRANSFER OF ENERGY - This relates to a device for treating lung disease, and more particularly, relates to a device for exchanging energy with airway tissue such as that found in the airways of human lungs. The exchange of energy with this airway tissue in the airways reduces the ability of the airways to constrict and/or reduces the resistance within the airway to the flow of air through the airway. | 03-12-2009 |
20090069798 | EYE THERAPY SYSTEM - A system for applying therapy to an eye selectively applies coolant to the corneal surface to minimize heat-related damage to the corneal surface during thermokeratoplasty. Embodiments may include an energy source, a conducting element, a coolant supply, and a coolant delivery system. The conducting element is operably connected to the energy source and extends from a proximal end to a distal end. The conducting element directs energy from the energy source to the distal end, which is positionable at the eye. The coolant delivery system is in communication with the coolant supply and is operable to deliver a micro-controlled pulse of coolant to the distal end. | 03-12-2009 |
20090069799 | Electrosurgical medical system and method - A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system. | 03-12-2009 |
20090069800 | SURFACE ELECTRODE MULTIPLE MODE OPERATION - A surface electrode for ablating tissue is provided. The surface electrode comprises a base, a plurality of tissue penetrating needle electrodes extending from the surface of the base an adjustable distance, and an electrical interface coupled to the plurality of needle electrodes. The adjustability of the needle electrodes allows the depth that the needle electrodes penetrate through tissue to be adjusted. | 03-12-2009 |
20090076492 | Frequency tuning in a microwave electrosurgical system - A method and apparatus is disclosed for the ablation of biological tissue to produce a therapeutic effect. An adjustment is made to the output frequency of an electrosurgical generator during the ablation cycle to accommodate changes in the electrical properties of the apparatus and the biological tissues that occur as energy is transferred to the tissue. The adjustment is made to better align the source impedance with that of the load. | 03-19-2009 |
20090076493 | Electrosurgical medical system and method - A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system. | 03-19-2009 |
20090076494 | Transurethral systems and methods for ablation treatment of prostate tissue - Transurethral systems and methods for delivering electrical energy and controlled, mild heating to a prostate tissue of a patient for destruction of cancerous and/or hyperplastic tissue. A method includes positioning an elongate urethral probe having an expandable member with electrode elements at a target location in the patient's urethra, and inflating or expanding at the target location. Secondary electrodes are positioned within or adjacent to the prostate tissue and spaced from the electrode elements of the expandable member, and an alternating electrical current flow is established between the electrode elements of the expandable member and the one or more secondary electrodes. Current delivery can be selected so as to destroy or ablate cancerous cells of the prostate tissue. | 03-19-2009 |
20090082762 | RADIO FREQUENCY ENERGY TRANSMISSION DEVICE FOR THE ABLATION OF BIOLOGICAL TISSUES - A radio frequency energy transmission device comprises a hollow coaxial electrically conductive cable adapted for conduction of radio frequency (RF) energy, particularly microwave energy, for the ablation of biological tissue. The hollow cable has a proximal end and a distal end and comprises coaxial inner and outer conductors extending substantially the entire length of the cable from the proximal end to a distal end portion of the cable. The inner conductor comprises an elongated electrically conductive tubular member having a hollow, axially extending lumen, and the outer conductor comprises an elongated electrically conductive tubular member disposed in a substantially coaxial relationship over at least a portion of the inner conductor. Dielectricity to impede conduction between the inner and outer conductors is introduced with a vacuum or dielectric medium disposed between the inner and outer conductors. An ablating member, which delivers radio frequency energy, particularly microwave energy, to body tissue is disposed at a distal end portion of the cable. The ablating member can be a helical coil, a monopole of a microstrip circuit. | 03-26-2009 |
20090082763 | Shapeable electrosurgical scalpel - The invention is directed to an electrosurgical device having a shapeable elongate cutting electrode having a free distal end with an exposed length of at least 0.5 inch and secured by its proximal end to the distal end of a handle. The electrosurgical device is designed for use with a high frequency electrosurgical generator which has an output at a frequency of between about 1 MHz and about 10 MHz, preferably about 3 to about 8 MHz. Preferably, the output has an essentially sinusoidal waveform with little harmonic distortion. The methods provide for the enhanced cutting of a variety of tissue including muscular, connective, glandular and fatty tissue. The device is particularly suitable in performing a breast biopsy. | 03-26-2009 |
20090082764 | METHODS FOR CREATING TISSUE EFFECT UTILIZING ELECTROMAGNETIC ENERGY AND A REVERSE THERMAL GRADIENT - A method of creating a tissue effect at a tissue site delivers electromagnetic energy through a skin surface from an electromagnetic energy delivery device coupled to an electromagnetic energy source. At least one of the electromagnetic energy delivery device or electromagnetic energy source includes a memory. A reverse thermal gradient is created through the skin surface to sufficiently heat an underlying tissue site to provide that a temperature of the skin surface is lower than a temperature of the underlying tissue. Information is stored from the memory to facilitate operation of at least one of the electromagnetic energy delivery device or the electromagnetic energy source. Electromagnetic energy is applied through the skin surface to the underlying tissue. A tissue effect is created on at least a portion of the tissue site. | 03-26-2009 |
20090088736 | Electrosurgical medical system and method - A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system. | 04-02-2009 |
20090088737 | Electrosurgical medical system and method - A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system. | 04-02-2009 |
20090093802 | Systems and Methods for Transeptal Cardiac Procedures, Including Tissue Penetrating Members and Associted Methods - Systems and methods for transeptal cardiac procedures are disclosed. A method for treating a patient in accordance with a particular embodiment includes positioning a tissue penetrating guidewire adjacent to a cardiac septum, directing pulses of energy to the guidewire, and advancing the guidewire into and through the septum by moving the guidewire in a distal direction in a series of discrete steps. Individual steps can be of a predetermined distance measured outside the patient's body. The method can further include passing a catheter over the guidewire after the guidewire has passed through the septum. | 04-09-2009 |
20090093803 | Systems and Methods for Transeptal Cardiac Procedures, Including Tissue Compression Devices and Methods - Systems and methods for transeptal cardiac procedures are disclosed. A patient treatment system in accordance with a particular embodiment includes a catheter, a tissue penetration device carried by and deployable from the catheter, an energy delivery device carried by an deployable from the catheter, a backstop surface carried by the catheter, and a flexible, resilient tissue compression device. The tissue compression device can be coupled between the energy delivery device and the catheter and can be changeable between a first configuration in which the energy delivery device applies a first force to the backstop surface via intervening tissue, and a second configuration in which the energy delivery device applies no force or a second force less than the first force into the backstop surface via intervening tissue. | 04-09-2009 |
20090093804 | Electrosurgical system - An electrosurgical system includes a generator for generating radio frequency power, an electrosurgical instrument including at least first and second electrodes carried on the instrument, and a monopolar patient return electrode separate from the instrument. The generator comprises at least one source of radio frequency (RF) power, and has a first supply state in which the RF waveform is supplied between the first electrode and the patient return electrode, and a second supply state in which the RF waveform is supplied between a second electrode and the monopolar patient return electrode. A controller is operable to control the generator such that, in at least one mode of the generator, feeding means within the generator is adapted to alternate between the first and second supply states. | 04-09-2009 |
20090093805 | Systems and methods for monitoring and controlling use of medical devices - A usage key card is adapted to be handled separate from a device tissue treatment deice. The usage key card has a storage medium formatted to contain an identification code, which is unique to the usage key card. The usage key card is also adapted to be read by a reader separate from the device. The storage medium is also formatted, when inserted into the reader, to retain data generated pertaining to operation of the de | 04-09-2009 |
20090099560 | PERCUTANEOUS TISSUE ABLATION PROBE WITH OCCLUSIVE BODIES - A tissue treatment system comprising a tissue treatment probe to be introduced in a target tissue region, wherein the probe comprises one or more perfusion ports that perfuse electrically conductive fluid to the target tissue region, one or more electrodes that deliver RF energy to the target tissue region to therapeutically treat the tissue, and at least one occlusive body that expands to occlude an anatomical vessel in or near where the probe is located in order to prevent heat generated by the delivery of the RF energy from being lost to mobile bodily fluids. | 04-16-2009 |
20090105706 | APPARATUS AND METHOD FOR SKIN TIGHTENING AND CORRECTIVE FORMING - An electrosurgical apparatus applies electrical current to skin, preferably for skin tightening procedures. A housing includes a substantially flat edge, disposable on the skin. The housing stores a plurality of electrodes which are movable through an opening defined by the edge. A vacuum is applied in the housing such that the edge seals with the skin. The electrodes pierce the skin perpendicularly and apply an RF electric current to heat primarily the subcutaneous layer. A coolant is applied to cool the outer layer of the skin. | 04-23-2009 |
20090105707 | DRILL AND FLAVORED FLUID PARTICLES COMBINATION - A medical apparatus is constructed to have a proximal end and a distal end, with the distal end including a source of mechanical tissue disruption that is configured to treat or ablate a target surface. The source of mechanical tissue disruption includes a tissue-disrupting distal end, and the medical apparatus further includes a flavored particle output for directing flavored particles in a direction toward the tissue-disrupting distal end. Another feature of the present invention includes a medical apparatus having a proximal end and a distal end. The distal end of the medical apparatus includes a source of tissue displacement that is configured to move or displace a portion of the target surface, and that is formed to have a tissue-displacing distal end. The medical apparatus can be configured to have a flavored particle output for directing flavored particles in a direction toward the tissue-displacing distal end. | 04-23-2009 |
20090112201 | RADIOFREQUENCY ABLATION DEVICE - A radiofrequency ablation device includes an elongate cannula having a distal portion and a proximal portion and a lumen extending between the distal and proximal portions. The RF ablation device further includes an elongate tubular member disposed within the lumen of the elongate cannula, the elongate tubular member having a distal region and a proximal region, the elongate tubular member including a lumen extending between the distal and proximal portions. A sildable electrode member is disposed in the portion of the elongate cannula lumen located external to the elongate tubular member. As an alternative to the elongate tubular member, the electrode member may include a lumen. The lumen of the elongate tubular member (or electrode member) carries or vents gaseous vapor generated during the RF ablation process. | 04-30-2009 |
20090112202 | DISPERSIVE ELECTRODE WITH THERMOCHROMATIC PROPERTIES - A tissue treatment system includes an ablation energy generator, a treatment probe, and a dispersive electrode having a thermochromatic material that changes appearance upon reaching a predetermined temperature. | 04-30-2009 |
20090112203 | MODIFICATION OF AIRWAYS BY APPLICATION OF MICROWAVE ENERGY - Methods of increasing gas exchange performed by the lung by damaging lung cells, damaging tissue, causing trauma, and/or destroying airway smooth muscle tone with an apparatus inserted into an airway of the lung. The damaging of lung cells, damaging tissue, causing trauma, and destroying airway smooth muscle tone with the apparatus may be any one of or combinations of the following: heating the airway; cooling the airway; delivering a liquid to the airway; delivering a gas to the airway; puncturing the airway; tearing the airway; cutting the airway; applying ultrasound to the airway; and applying ionizing radiation to the airway. | 04-30-2009 |
20090118725 | HEMOSTATIC TISSUE TUNNEL GENERATOR FOR INSERTING TREATMENT APPARATUS INTO TISSUE OF A PATIENT - A catheter for insertion into and treatment of tissue in a patient comprises a radio frequency (RF) electrode having an elongated body that conducts electrical RF energy to a conductive tip. An insulating sleeve surrounds the elongated body. In a first mode of operation, the conductive tip is exposed outside the insulating sleeve and the RF electrode delivers RF energy that erodes the tissue of the patient and creates a tunnel through which the catheter can advance into the tissue of the patient. In a second mode of operation, the insulating sleeve and/or the RF electrode is retracted and a second treatment apparatus treats the tissue. | 05-07-2009 |
20090118726 | Systems and Methods for Transeptal Cardiac Procedures, Including Tissue Sealing Members Associated Methods - Systems and methods for transeptal cardiac procedures are disclosed. A patient treatment device in accordance with a particular embodiment includes a catheter having a proximal end, a distal end, a working portion toward the distal end, and an electrical energy path coupleable to a source of electrical energy. The device can further include a tissue penetrating member carried by the catheter and an electrode device carried by the working portion of the catheter and movable along the tissue penetrating member. The electrode device can include a collapsible stranded conductive material coupled to the electrical signal path and being changeable between a deployed position and a stowed position. The conductive material can be elongated along a deployment axis when in the stowed position, and can be contracted along the deployment axis and expanded transverse to the deployment axis when in the deployed position. | 05-07-2009 |
20090125011 | Devices, Methods and Kits for Substantial and Uniform Ablation about a Linear Bipolar Array of Electrodes - The present invention relates to a medical device for substantially sized and uniform ablation of animal or human tissue comprising a bipolar generator for generating radio frequency at an electrode, a polarity alternator, an applicator probe having a handle and an elongated member, and a tip at the far end of the distal end suitable for insertion into tissue. The elongated member has a proximal and distal end with an electrode cluster of three or more electrodes located on the distal end of the elongated member. The electrodes are electrically insulated from each other and at least two of the electrodes have dissimilar polarity from each other wherein at least one of the electrodes has a high voltage polarity and at least one of the electrodes has a return polarity. During ablation, the polarity alternator automatically and repeatedly changes the polarity of the electrodes to cycle lesion formation along the length of the electrode cluster and alternate lesion formation repeatedly from one polarity to other polarity to form a spherical or near spherical lesion at the distal tip equal in diameter to the length of the cluster. | 05-14-2009 |
20090125012 | DISPOSABLE ELECTRO-SURGICAL COVER ELEMENTS AND ELECTRO-SURGICAL INSTRUMENT - Electro-surgical instrument and attachments for converting a mechanical surgical instrument into an electro-surgical instrument are disclosed for applying electrical current to tissue, such as a blood vessel, to seal or cauterize the tissue. A cover element is slidable over a distal end of a component of a mechanical surgical instrument, such as a forceps. Each cover element defines a single pocket or cavity and a single aperture or opening at one end thereof for receiving and surrounding the distal end of the component and an electrically conductive element attached to an outer surface of the cover element. RF energy can be applied to tissue through the electrically conductive elements. After the procedure, the cover elements can be slidably removed from the forceps member and are disposable. | 05-14-2009 |
20090125013 | Fat retraction apparatus and method for using same - The present invention provides a method and apparatus for non-invasive reduction of excessive fat tissue by externally applying radio frequency (RF) electromagnetic (EM) waves adjusted to specific fat cells absorption frequency and electromagnetic propagation mode. Based on the performed experiments described further, the method and working apparatus has been invented that reduces fat layers without any medication, non-invasively through the intact skin. The invented method and apparatus facilitates the safe fat removal, and may lead to reduction and eradication of obesity and obesity associated diseases. | 05-14-2009 |
20090131925 | Systems and Methods for Transeptal Cardiac Procedures, Including Separable Guidewires - Systems and methods for transeptal cardiac procedures are disclosed. A patient treatment device in accordance with a particular embodiment includes an elongated first intravenous guidewire that includes a first branch and a second branch fixably secured relative to the first branch at a first location. The device can further include an elongated second intravenous guidewire that is movable relative to at least one of the first and second branches between a first position in which the first and second branches are releasably secured relative to each other by the second guidewire at a second location, and a second position in which the first and second branches are separated from each other at the second location. | 05-21-2009 |
20090131926 | Dynamically Matched Microwave Antenna for Tissue Ablation - A microwave ablation probe for providing microwave energy to tissue is disclosed. The probe includes a feedline having an inner conductor, a secondary inner conductor, an insulating spacer, and an outer conductor. The inner conductor is slidably disposed within the secondary inner conductor. The feedline also includes a radiating portion having an extruded portion of the inner conductor centrally disposed therein, wherein longitudinal movement of the inner conductor relative to the feedline tunes the radiating portion. | 05-21-2009 |
20090131927 | METHOD AND APPARATUS FOR REMOTE DETECTION OF RF ABLATION - Devices for the generation and detection of an ablative plasma discharge in a subject are presented. Methods of use, including navigation and operation of the devices to facilitate minimally invasive therapeutic procedures are disclosed. | 05-21-2009 |
20090131928 | GERD treatment apparatus and method - An apparatus includes an expandable member. The expandable member is sized to be positionable in a sphincter. An energy delivery device is positioned on a surface of the expandable member. The energy delivery device has a configuration that provides sufficient energy delivery to create lesions in the interior of the sphincter. When the expandable member is removed from the sphincter, the sphincter returns to its closed or contracted configuration. | 05-21-2009 |
20090138003 | Cordless Medical Cauterization and Cutting Device - A cordless cautery and cutting surgical device includes a modular battery and a surgical handle. The battery has a cordless radio-frequency-signal-generation assembly generating an output radio-frequency signal and a first selectively removable connector part. The surgical handle has a first handle body portion with a bipolar cautery and cutting end effector. The end effector has jaws with bipolar contacts and a cutting blade disposed between the jaws. The handle has a second body portion connected to the first body portion, defines therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery, and a second selectively removable connector part operable to removably hold the first connector part thereto. The second connector part has conductors electrically connecting the RF assembly to the bipolar contacts for supplying the radio-frequency signal to the bipolar contacts when the first and second connector parts are removably secured together. | 05-28-2009 |
20090138004 | System and Method for Field Ablation Prediction - A system for determining field of ablation is disclosed. The system includes a power source configured to generate electromagnetic energy and an energy applicator coupled to the power source. The energy applicator is configured to be inserted into tissue and to provide electromagnetic energy to a target volume. The system also includes an imaging apparatus configured to generate a uniform magnetic field and at least one variable magnetic field around the tissue. The imaging apparatus obtains an image of a field of ablation within the target volume in response to a trace RF pulse supplied by the power source through the energy applicator to the target volume simultaneously with an excitation RF pulse generated by the imaging apparatus and the at least one variable magnetic field. | 05-28-2009 |
20090138005 | Targeted Cooling of Deployable Microwave Antenna - The present disclosure relates to devices and methods for the treatment of tissue with microwave energy. The devices and methods disclosed herein utilize an antenna assembly which includes an elongate member, an outer conductor, an inner conductor, at least a portion of which is deployable, and a cooling system. The cooling system disclosed herein may significantly curtail any theoretical, or potential negative effects upon the target tissue experienced during the transmission of microwave energy to the antenna assembly due to ohmic heating. | 05-28-2009 |
20090138006 | CORDLESS POWER-ASSISTED MEDICAL CAUTERIZATION AND CUTTING DEVICE - A cordless cautery and cutting surgical device includes a modular battery and a surgical handle operable to removably hold the battery thereto. The handle has a cordless radio-frequency-signal-generation assembly and a surgical bipolar end effector having jaws and a cutting blade therebetween. The signal-generation assembly selectively supplies radio-frequency signal to the end effector when powered for electrocautery of tissue between the jaws. The handle defines therein an aseptically sealable battery-holding compartment selectively exposed to the environment and removably holding therein the battery. A motor assembly is disposed in the handle and is electrically connected to the battery and/or the signal-generation assembly and is powered and controlled thereby. The motor assembly physically couples to the blade and/or at least one jaw for moving the blade/jaw(s). The second connector part electrically connects the battery to the signal-generation assembly and/or the motor assembly when the battery is removably disposed in the compartment. | 05-28-2009 |
20090138007 | HIGH-SENSITIVITY PRESSURE-SENSING PROBE - A medical probe includes an insertion tube, having a longitudinal axis and having a distal end. A distal tip is disposed at the distal end of the insertion tube and is configured to be brought into contact with a body tissue. A joint couples the distal tip to the distal end of the insertion tube. A joint sensor, contained within the probe, senses a position of the distal tip relative to the distal end of the insertion tube. The joint sensor includes first and second subassemblies, which are disposed within the probe on opposite, respective sides of the joint and each include one or more magnetic transducers. | 05-28-2009 |
20090138008 | Endocardial Dispersive Electrode for Use with a Monopolar RF Ablation Pen - Methods and devices for forming a lesion in a target tissue having a cavity within a first RF electrode and a second RF electrode can be coupled to opposite poles of an RF current source. The second electrode can be inserted into the tissue cavity and expanded to contact the target tissue from within. The first electrode can be externally disposed against the target tissue while applying RF current between the first and second electrodes to ablate the target tissue. Some methods are directed to ablating tribiculated atrial wall tissue to treat atrial fibrillation. The second electrode can contact the tribiculated tissue directly from within to provide a direct path between the two electrodes. In some methods, the second electrode is inserted through an incision made to remove an atrial appendage. The methods can provide deeper, narrower lesions relative to those made using remote, indifferent electrodes. Atrial fibrillation ablation procedures can be performed using the invention, requiring fewer incisions than conventional methods. | 05-28-2009 |
20090143778 | Electrosurgical Pencil with Improved Controls - An electrosurgical pencil is provided and includes an elongated housing having an electrocautery blade supported therein and extending distally from the housing. The electrocautery blade is connected to a source of electrosurgical energy. The pencil further includes a plurality of activation switches supported on the housing for activating etectrocautery blade. Each activation switch is configured and adapted to selectively complete a control loop extending from the source of electrosurgical energy upon actuation thereof. In use, actuation of at least one of the plurality of activation switches produces a dividing with hemostatic effect at the electrocautery blade. The electrosurgical pencil further includes at least one voltage divider network supported on the housing. The at least one voltage divider network is electrically connected to the source of electrosurgical energy and controls the intensity of electrosurgical energy being delivered to the electrosurgical pencil. | 06-04-2009 |
20090149848 | RF Energy Delivery System and Method - Devices, systems and methods are disclosed for the ablation of tissue. A steerable ablation catheter can include one or more ablation elements at its distal end and one or more ablation elements fixedly attached to its shaft. The distal end of the ablation catheter can be deflected to assume a number of different deflection geometries in at least one direction along the shaft. One feature of the ablation catheter is that its shaft can comprise materials of differing durometers or stiffnesses attached together at a joint. Methods associated with use of the ablation catheter are also covered. | 06-11-2009 |
20090157067 | METHOD AND APPARATUS FOR DIGITAL SIGNAL PROCESSING FOR RADIO FREQUENCY SURGERY MEASUREMENTS - A method and apparatus for calculating current lost through a patient during a treatment of a patient using an electromagnetic energy delivery system is disclosed. The system generates electromagnetic energy, contacts a skin surface of the patient, transfers the electromagnetic energy to tissue beneath the surface of the skin, detects a value of at least one characteristic of the electromagnetic energy utilizing synchronous undersampling, and calculates the current lost through the patient. The characteristic measured may be a value of current of the electromagnet energy. An adjustable matching network may be utilized to maximize power to the tissue of the patient. Values of the impedance of the matching network may be utilized to determine the electromagnetic energy delivered to the tissue of the patient. A current correction factor is determined from the impedance of the matching network and utilized to calculate the current lost through the patient. | 06-18-2009 |
20090157068 | INTRAOPERATIVE ELECTRICAL CONDUCTION MAPPING SYSTEM - A medical probe comprises an elongated body, a first membrane extending laterally from a longitudinal portion of the elongated body, a tissue ablative element carried by the elongated body, and at least one diagnostic electrode disposed on the first membrane. The tissue ablative element is configured for delivering energy along the longitudinal portion of the elongated body to create a linear lesion. The medical probe may further comprise a second membrane extending laterally from the longitudinal portion of the elongated body opposite the first second membrane, and at least another diagnostic electrode disposed on the second membrane. | 06-18-2009 |
20090157069 | Systems and methods for thermal treatment of body tissue - Apparatus and methods for treating body tissue by use of thermal treatment material. The thermal treatment material to be injected into target tissue of a body includes: a carrier substrate; a plurality of first particles operative to generate thermal energy in response to an alternating electromagnetic field applied external to the body; and a plurality of second particles, each of the second particles having a core and a coating surrounding the core. The coating is dissolved at a preset temperature by the thermal energy so that the visibility of the core in an external imaging system is affected as the coating is dissolved to expose the core. The variation of the visibility can be used as an indicator to determine if the material has reached the preset temperature. | 06-18-2009 |
20090157070 | MEDICAL TREATMENT USING PULSED ENERGY - An apparatus and methods for the treatment of tissue includes compressing a portion of the tissue to be treated using an expandable member and emitting a plurality of energy pulses toward that portion of the tissue. The pulses can be pulses of electromagnetic radiation and can be based on a pulse parameter value. The pulse parameter value can be modified based on a signal from a sensor. | 06-18-2009 |
20090157071 | System and Method for Tissue Sealing - An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes. | 06-18-2009 |
20090157072 | System and Method for Tissue Sealing - An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes. | 06-18-2009 |
20090171337 | Photodynamic-Based Cardiac Ablation Device and Method Via the Esophagus - A method and system for ablation of cardiac tissue in a living being via the esophagus is provided. The method includes the step of introducing a photodynamic substance to the cardiac tissue. A deformable, elongated body defining a proximal end and a distal end is inserted into an esophagus of the living being. The distal end of the elongated body is located proximate the cardiac tissue. A first set of electromagnetic radiation is then directed from the distal end of the elongated body towards the cardiac tissue. Reflective and opaque surfaces at the distal end of the elongated body may be used to direct the electromagnetic radiation and an expandable membrane at the distal end may be used to urge the distal end of the elongated body to a predetermined position within the esophagus. | 07-02-2009 |
20090171338 | SYSTEM AND METHOD FOR PREVENTING COLLATERAL DAMAGE WITH INTERVENTIONAL MEDICAL PROCEDURES - A system for performing an interventional medical procedure is disclosed. The system includes a treatment device having a treatment portion, a localization system, and a means for defining a boundary about the treatment portion relative to location data point. The system may further be configured to provide a response when a portion of the treatment device enter or leaves a defined boundary, region, or range. Methods for performing interventional medical procedures that, among other things, reduce or prevent collateral damage to non-target regions are also disclosed. | 07-02-2009 |
20090171339 | ELECTROSURGICAL PROBE HAVING CURRENT ENHANCING PROTRUSIONS - Tissue ablation probes and methods of treating diseased tissue using one or more probe components that include one or more current enhancing protrusions are disclosed. An uninsulated, electrically conductive section of the shaft can include one or more current enhancing protrusions. Conductive elements or individual electrodes of electrode arrays can also include current enhancing protrusions. The current enhancing protrusions increase current density around the uninsulated outer surface and/or conductive elements to bias or enhance tissue ablation. | 07-02-2009 |
20090171340 | ELECTROSURGICAL PROBE HAVING CONDUCTIVE OUTER SURFACE TO INITIATE ABLATION BETWEEN ELECTRODE - Tissue ablation probes and methods of treating diseased tissue are disclosed that include or use a partially uninsulated shaft that carries conductive elements such as electrode arrays. The shaft has an uninsulated outer surface that is electrically conductive and is electrically connected to one of the conductive elements. The uninsulated outer surface and one of the conductive elements are insulated from the other conductive element. Tissue ablation is performed “inside-out” and begins between the proximal and distal electrode arrays and migrates outwardly towards the electrode arrays when electrical current is applied to the probe. | 07-02-2009 |
20090177192 | METHOD FOR ABLATING TISSUE TO FACILITATE IMPLANTATION AND APPARATUS AND KIT FOR USE THEREWITH - A method for treating a mammalian body having tissue comprising creating a cavity in the tissue formed by an internal surface of the tissue. The internal surface is ablated. An implant-forming material is introduced into the cavity to create an implant in the tissue. The ablation of the internal surface inhibits migration of the implant. An apparatus and kit for use with the method are provided. | 07-09-2009 |
20090177193 | IRRIGATED ABLATION ELECTRODE HAVING SMOOTH EDGES TO MINIMIZE TISSUE CHAR - The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are camfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002″ to about 0.008″. | 07-09-2009 |
20090182321 | Coaptive tissue fusion method and apparatus with energy derivative precursive energy termination control - Biological tissue is sealed or fused to occlude an opening by compressing apposite sidewall portions of the tissue and applying sufficient energy to cause the fibers of the compressed apposed sidewall portions to intertwine and fuse with one another to form a permanent seal. The energy application is controlled by detecting a precursor fusion condition while applying the energy and before sufficient energy has been applied to achieve a permanent seal. The application of energy is terminated in a time-delayed relationship to the detection of the precursor fusion condition. The precursor fusion condition is detected from derivative values of the total accumulated amount of high-frequency energy conducted through the tissue. | 07-16-2009 |
20090182322 | Bipolar modular forceps modular arms - The bipolar modular forceps assembly is a disposable electrosurgical device utilized with an RF voltage supply to weld soft tissue to prevent bleeding when cut or excised. The device consists of two modularly constructed arms arranged in scissor configuration that clamp when the arms are apart and open when the arms are squeezed together. The wires enter from the rear of the device, behind the digit insertion of the upper arm, and run through the interior of the upper arm before reaching the pivot point. From the pivot joint, one wire continues to the bottom jaw and the other wire wraps around the pin bushing in the pivot joint and proceeds to the top jaw. At all times the wires are fully insulated by the insulative cover with the only exposed wire occurring where they enter the device. The bipolar voltage of each wire is transferred to an electrode on each jaw. The electrodes are insulated from surrounding tissue by the insulative jaw, which contains visible markings showing the beginning, middle and end of the electrode. Both the insulative jaw and the electrode are interchangeable and made from moldable material to allow for different sizes and shapes. When no voltage is applied the tool can be used as a blunt dissector. | 07-16-2009 |
20090187177 | IMPEDANCE RESPONSIVE ABLATION RF DRIVING FOR MODERATING RETURN ELECTRODE TEMPERATURE - The inventive method for ablating a tissue mass associated with a human or animal patient being treated comprises positioning an ablating electrode in a tissue mass to be ablated. A plurality of return electrodes are positioned on the patient. Electrical energy is applied between the return electrodes and the ablating electrode. The temperature of the return electrodes is measured to generate a temperature measurement signal which is used to control ablation current through the return electrodes. | 07-23-2009 |
20090187178 | SYSTEM AND METHOD FOR POSITIONING AN EYE THERAPY DEVICE - A system for aligning an eye therapy instrument over a selected area or feature of an eye provides an attachment element that is removably attached to a surface of an eye. A receiving element is coupled to the attachment element and movable relative to the attachment element. The receiving element includes a coupling element configured to operably couple an eye therapy instrument to the receiving element and adjustably move the eye therapy instrument into a selected position with respect to the attachment element. The system makes adjustments to ensure accurate delivery of treatment from the eye therapy device to areas of the eye. In one embodiment, the receiving element allows lateral adjustments to be made along one or more axes. Additionally or alternatively, the receiving element allows angular or rotational adjustments to be made about one or more axes. | 07-23-2009 |
20090187179 | Ablation Instruments and Related Methods - An ablation instrument including a body and an ablating member is provided. The body includes a distal end and a surface with the ablating member coupled toward the distal end of the body. The ablating member includes a lesion wire extending through and along a portion of the surface of the body for creating lesions in a target tissue while the body serves to isolate surrounding tissue from the target tissue. A method of ablating a target area is also provided. | 07-23-2009 |
20090187180 | Choked Dielectric Loaded Tip Dipole Microwave Antenna - A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween. A radiating portion is also included having an unbalanced dipole antenna including a proximal portion and a distal portion that are of different lengths. The proximal portion includes at least a portion of the inner conductor and the inner insulator and the distal portion includes a conductive member. | 07-23-2009 |
20090187181 | SURGICAL INSTRUMENTS AND TECHNIQUES FOR TREATING GASTRO-ESOPHAGEAL REFLUX DISEASE - An apparatus to treat tissue in a selected wall region of an esophagus is provided. In one embodiment the apparatus includes an elongate member having a circumference and is sized to be deployed in an esophagus. The apparatus further includes an energy delivery element sized to apply electrical energy to tissue in the esophagus, and to produce a pattern of treated tissue within a less than 180° circumferential portion of the esophagus. The elongate member further includes an expandable structure to stabilize the energy delivery element in physical and electrical contact with tissue. | 07-23-2009 |
20090198225 | Electrosurgical system - An electrosurgical system includes an electrosurgical generator including at least one source of radio frequency (RF) power, and a plurality of output connections, only one of the output connections at any one time being active in that it is able to receive radio frequency power from the source. The generator includes selection means adapted to change the active output connection, and a controller adapted to control the supply of radio frequency power from the source to the active output connection. The system also includes a plurality of electrosurgical assemblies, each including an electrosurgical instrument and a cable connecting the electrosurgical instrument to one of the output connections. The electrosurgical assemblies each include a handswitch adapted to send a signal to the selection means to change the active output connection. The selection means is such that a signal sent from the handswitch of the active instrument can cause the selection means to change the active output connection to a different output connection, but a signal sent from the handswitch of an instrument other than the active instrument does not immediately cause the selection means to change the active output connection to a different output connection. | 08-06-2009 |
20090198226 | Medical Device Including Member that Deploys in a Spiral-Like Configuration and Method - A medial device including a handle portion, and a deployable member disposed in mechanical cooperation with the handle portion is disclosed. The deployable member includes a distal tip and a bend that is disposed adjacent the distal tip. The deployable member is extendable form the handle portion such that the distal tip extends in a spiral-like configuration in response to extension of the deployable member. The spiral-like configuration includes non-equivalent radii. | 08-06-2009 |
20090198227 | Articulating Ablation Device and Method - An ablation device including a handle portion, a shaft and at least one cable. The shaft extends distally from the handle portion and includes an inner conductor and an outer conductor that substantially surrounds at least a portion of the inner conductor. The cable extends from the handle portion along at least a portion of the shaft. The distal tip of the inner conductor is positionable distally beyond a distal-most end of the outer conductor. In response to movement of the at least one cable relative to the handle portion, the distal tip of the outer conductor is movable form a first position where the distal tip is substantially aligned with a longitudinal axis defined by the outer conductor to at least a second position where the distal tip is disposed at an angle relative to the longitudinal axis. | 08-06-2009 |
20090198228 | Bipolar Scissors for Adenoid and Tonsil Removal - A bipolar electrosurgical instrument is disclosed for use in excising tissues. The disclosed bipolar electrosurgical instrument includes a pair of jaws or legs having shearing surfaces, one of which is electrically nonconductive. The disclosed bipolar surgical instrument also includes conductive surfaces on the legs which allow energy flux to flow through tissue on a plane other than that defined by the relative shearing surfaces. | 08-06-2009 |
20090204112 | APPRARATUS AND METHOD FOR VESSEL SEALING AND TISSUE COAGULATION - Disclosed is a working end of a surgical instrument for delivering heat energy to tissue. The working end includes paired first and second jaw members movable between open and closed positions, with each jaw member defining a jaw body and jaw end-effecter for engaging and heating tissue. At least one jaw member contains an electromagnetic-energy emitter coupled to an electromagnetic-energy source, the electromagnetic-energy emitter is located within the jaw end-effecter, and the jaw end-effecter includes an insert made of an electromagnetic-energy absorbing material. | 08-13-2009 |
20090209954 | SYSTEM AND METHOD FOR RESHAPING AN EYE FEATURE - A system for applying therapy to an eye includes an applicator having a conducting element configured to direct energy from an energy source to an application end of the conducting element, where the application end has at least one eye contact portion. A positioning system positions the at least one eye contact portion in stable engagement with the eye surface. The conducting element is disposed within a housing for the applicator and at least one adjustment system is employed to move the conducting element relative to the housing. The at least one adjustment system enables controlled movement of the conducting element and the at least one eye contact portion against the corneal surface. In particular embodiments, sufficient contact between the applicator and the cornea is determined by causing applanation of the cornea. In other embodiments, at least one measurement device is employed to determine when sufficient contact has been established. | 08-20-2009 |
20090209955 | PROSTHETIC VALVE IMPLANT SITE PREPARATION TECHNIQUES - Prosthetic valves implantation methods and systems, especially as related to preparing the native site of a native stenotic or incompetent aortic valve for receipt of a prosthetic replacement valve are described. The subject tools and associated site preparation techniques may be employed in percutaneous aortic valve replacement procedures. | 08-20-2009 |
20090216221 | SYSTEMS AND METHODS FOR REDUCTION OF ATRIAL FIBRILLATION - Embodiments of the present invention are directed to ablation catheter systems configured, for example, to ablate tissue adjacent an ostium of the pulmonary vein in a left atria of a heart. In one embodiment, an ablation catheter system includes a handle including an actuator and a catheter coupled to the handle defining a lumen extending through a length of the catheter, the catheter including a tip portion at a distal end thereof. The ablation catheter system may also include an electrode coupled to the handle with lines extending through the lumen of the catheter, the electrode being configured to be constrained within the tip portion of the catheter and configured to be deployed from the tip portion and self expand to an expanded configuration. With this arrangement, the electrode is configured to self expand to a conical configuration with a tip portion configured to be disposed within the pulmonary vein. | 08-27-2009 |
20090221998 | ANCHORED RF ABLATION DEVICE FOR THE DESTRUCTION OF TISSUE MASSES - An anchoring member which comprises a support structure and at least one anchor secured to the anchoring member is disclosed. An anchor deflection member is disposed generally externally to and at least partially surrounding and extending along the perimeter of the anchoring member. The anchor deflection member supports the anchoring member for sliding longitudinal movement in directions which result in advancement and retraction of a point on the anchor. The anchor deflection member defines a guide surface positioned on the inside of the anchor deflection member. The guide surface extends longitudinally, and it is configured and dimensioned to slidingly guide the cylindrical anchoring member. A deflection lip is positioned relatively inwardly with respect to the guide surface. The deflection lip is positioned to outwardly deflect the point of the anchor as the anchor is advanced from a position removed from the deflection lip toward the deflection lip into contact with the deflection lip and beyond the deflection lip. | 09-03-2009 |
20090221999 | Thermal Ablation Design and Planning Methods - Methods for simulation of heat transport phenomena applicable to the design of a near-field microwave ablation device, the design of such a device based on simulation and a patient planning and monitoring station using simulated thermal ablation of tissue are provided. | 09-03-2009 |
20090222000 | DEVICE AND METHOD FOR THE TREATMENT OF TUMOURS - A device includes an applicator and electrode needles forming two rows. Needles may be inserted into tissue and electromagnetic power may be applied thereto, following which a blade may be used to cut the tissue. The blade may be located between or outside and parallel to needle rows. The blade is located on an actuator operable by a handle, which may be in the form of a rod. | 09-03-2009 |
20090222001 | Fluid-Assisted Electrosurgical Devices, Methods and Systems - The invention provides a bipolar electrosurgical device to treat tissue in a presence of radio frequency energy and a fluid provided from the device. In one embodiment, the device comprises a first electrode and a second electrode at the end of a malleable shaft assembly to be hand shapeable by a user of the device, and at least one fluid outlet. The malleable shaft assembly comprises a first shaft and a second shaft, a length of the first shaft and a length of the second shaft in an outer member comprising a polymer, and at least a portion of the first shaft and at least a portion of the second shaft being malleable. | 09-03-2009 |
20090222002 | Intracooled Percutaneous Microwave Ablation Probe - The present disclosure relates to devices and methods for the treatment of tissue with microwave energy. The devices and methods disclosed herein incorporate an antenna assembly comprising outer and inner conductors having a dielectric material interposed therebetween, a sealing barrier, and a cooling system to minimize the likelihood that the antenna assembly will overheat. | 09-03-2009 |
20090240244 | Electrosurgical Generator Having Boost Mode Control Based on Impedance - A method of controlling output power of an electrosurgical generator apparatus that controls a variable output signal to a pair of electrodes includes setting the output power of the generator apparatus to a selected power output level. An impedance is measured across the electrodes when the electrodes are applied to an area of tissue. The output power of the generator apparatus is changed to a boost power output level greater than the selected power output level. The boost power output level corresponds to a calculation based at least in part on the measured impedance. The method further includes applying the output signal to the electrodes at the boost power output level for a first time duration and changing the power output to the selected power output level after the first time duration. An electrosurgical generator apparatus operating in accordance with the method is also described. | 09-24-2009 |
20090240245 | Method for Powering a Surgical Instrument - A method for powering an electrosurgical instrument includes the steps of inserting a removable battery assembly into an electrosurgical instrument and activating the power control circuit to power the electrosurgical instrument. The removable battery assembly includes a power control circuit powered by at least one energy storage cell, a radio-frequency-signal-generation assembly communicatively coupled to the power control circuit and operable to selectively produce a radio-frequency signal, and a battery assembly/instrument interface operably coupled to the radio-frequency-signal-generation assembly. The battery assembly/instrument interface includes a first plurality of connectors removably connectable with at least one corresponding connector coupled to the electrosurgical instrument, at least one of the first plurality of connectors being operable to supply the radio-frequency signal to the electrosurgical instrument. | 09-24-2009 |
20090240246 | Cordless Medical Cauterization and Cutting Device - A surgical device includes a radio-frequency-signal-generation assembly including a radio-frequency-signal-generation circuit operable to generate a radio-frequency signal at an output and adapted to couple to a switch-mode power supply and a surgical handle including an end effector having at least one jaw with at least one electrical contact, the end effector including at least one signal input that electrically connects to the output to provide the radio-frequency signal at the at least one electrical contact. | 09-24-2009 |
20090240247 | SYSTEMS AND METHODS FOR PERFORMING SIMULTANEOUS ABLATION - A system for treating tissue includes first and second ablation devices each including a plurality of wire electrodes and coupled to a generator in parallel. In one embodiment, the generator includes first and second terminals coupled in parallel to one another, and the first and second ablation devices are connected to the first and second terminals, respectively. Alternatively, the first and second ablation devices are coupled to a single terminal of the generator using a “Y” cable. A ground electrode is coupled to the generator opposite the first and second ablation devices for monopolar operation. The first and second arrays of electrodes are inserted into first and second sites adjacent one another within a tissue region. Energy is simultaneously delivered to the first and second arrays to generate lesions at the first and second sites preferably such that the first and second lesions overlap. | 09-24-2009 |
20090248003 | Electrosurgical Apparatus with Predictive RF Source Control - An electrosurgical generator is disclosed, which includes a closed loop control system having a sensor system configured to sense tissue and/or energy properties at a tissue site and to generate a sensor signal representative of the tissue and/or energy properties. The control system includes a controller configured to select an electrosurgical operational mode from a plurality of electrosurgical operational modes in response to the sensor signal. A radio frequency arbitrary source is also included which is configured to generate a radio frequency input signal corresponding to the selected electrosurgical operational mode and a radio frequency output stage configured to generate a treatment signal which corresponds to the electrosurgical operational mode. The system also includes a predictive signal processor configured to adjust the radio frequency output stage in response to the radio frequency input signal, such that the radio frequency output stage alters the treatment signal in real time based on the selected electrosurgical operational mode. | 10-01-2009 |
20090248004 | SYSTEMS AND METHODS FOR TREATMENT OF SOFT TISSUE - Methods and systems for treatment of tissue (e.g., the dermal-hypodermal region) with one or more wavelength are disclosed. Electromagnetic radiation devices and methods for lypolysis and/or coagulation of blood and/or treatment of water and/or treatment of skin are disclosed. | 10-01-2009 |
20090248005 | Microwave Ablation Devices Including Expandable Antennas and Methods of Use - A microwave ablation device for treating tissue includes an inner conductor having a length and a distal end and configured to deliver energy, a wire extending adjacent the inner conductor and axially translatable relative thereto, the wire including a length and a distal end, a distal tip disposed in mechanical cooperation with the distal end of the inner conductor and the distal end of the wire; and an outer conductor including a distal end and defining a longitudinal axis, the outer conductor at least partially surrounding the inner conductor and the wire at least partially along their lengths. The distal tip is movable substantially along the longitudinal axis with respect to the outer conductor and relative movement of the distal tip towards the distal end of the outer conductor causes at least a portion of the inner conductor to move away from the longitudinal axis. | 10-01-2009 |
20090248006 | Re-Hydration Antenna for Ablation - A system for use with a microwave antenna includes a microwave antenna configured to deliver microwave energy from a power source to tissue and a sensor module in operative communication with the power source and configured to detect a reflectance parameter. The system further includes a jacket adapted to at least partially surround the microwave antenna to define a fluid channel between the jacket and the microwave antenna. A plurality of fluid distribution ports are defined through the jacket and are in fluid communication with the fluid channel to permit the flow of fluid through the jacket. The system further includes a fluid pumping system operably coupled to the power source and configured to selectively provide cooling fluid to the fluid channel for distribution through the fluid distribution ports based on the reflectance parameter. | 10-01-2009 |
20090248007 | ELECTROSURGICAL SYSTEM - An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio/visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances. | 10-01-2009 |
20090254076 | METHOD AND APPARATUS FOR FRACTIONAL DEFORMATION AND TREATMENT OF TISSUE - Devices and methods of treatment of tissue, such as skin tissue, with electromagnetic radiation (EMR) are disclosed that employ local deformation of tissue in small areas. Devices and methods employing local deformation are used to produce fractional lattices of EMR-treated islets in tissue. | 10-08-2009 |
20090254077 | Arc Generation in a Fluid Medium - An electrosurgical generator is disclosed. The generator includes a radio frequency output stage configured to generate a frequency waveform to an active electrode of an electrosurgical instrument when the active electrode is disposed in a fluid medium. The generator also includes a sensor circuit configured to measure tissue impedance and a controller configured to increase power of the radio frequency waveform to a predetermined electrical arcing level in response to the tissue impedance being within an open circuit impedance range and tissue contact impedance range. The controller is further configured to lower the power of the radio frequency waveform to a lower level when the tissue impedance is outside the open circuit impedance range and the tissue contact impedance range. | 10-08-2009 |
20090254078 | ABLATION ELECTRODE AND CATHETER ASSEMBLY FOR EPICARDIAL MAPPING AND ABLATION WITH DIRECTIONALLY FOCUSED RF ENERGY - The present invention provides various embodiments of electrodes and/or electrode tips for use in connection with ablation catheters and ablation catheter systems. In an embodiment, an electrode tip for an ablation catheter is provided, comprising an electrode carrier, a first electrode, and second electrode, each adapted to direct energy is various directions and configured to be selectively activated. In another embodiment, an electrode is provided that comprises an electrode body having an insulated portion to protect adjacent tissue from ablation while further adapted to direct energy in a downward direction towards the target tissue. Other embodiments of electrodes and/or electrode tips providing ablative elements that are directed laterally are also disclosed. Moreover, embodiments of several types of electrodes and/or electrode tips, which may include positioning, orientation, irrigating, cooling, and deflecting features, whether provided individually or in various combinations, are also disclosed. | 10-08-2009 |
20090254079 | Methods for treating the cardia of the stomach - Methods treat a tissue region. In one arrangement, the methods deploy an endoscope in an esophagus and visualize with the endoscope a Z-line that marks a transition between esophageal tissue and stomach tissue by observing tissue color change at or near the Z-line. The methods deploy an electrode support structure over the endoscope at or near the Z-line visualized by the endoscope, wherein the endoscope serves as a guide for the electrode support structure. The methods introduce from the electrode support structure a tissue-piercing needle electrode into tissue at or near the Z-line and observe introduction of the tissue-piercing needle electrode using the endoscope. The methods couple the tissue-piercing electrode to a source of radio frequency energy to ohmically heat tissue and create a subsurface tissue lesion in tissue at or near the Z-line, and observe creation of the tissue lesion using the endoscope. | 10-08-2009 |
20090264877 | High-Strength Microwave Antenna Coupling - Microwave antenna assemblies incorporating a high-strength antenna coupler are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a microwave antenna coupler. In embodiments, the described antenna coupler includes a dielectric member and at least one discrete coupling member. The coupling member isolates coupling forces, such as tension and torque, from the dielectric member, which may prevent cracking and reduce the incidence of mechanical failure of the dielectric. The coupling member may be formed from high strength materials, such as stainless steel, allowing greater coupling forces to be achieved when compared to couplers using only dielectric materials. The coupling member may additionally include reinforcing members which extend into the dielectric member for increased strength. | 10-22-2009 |
20090264878 | DEVICES AND METHODS FOR ABLATING AND REMOVING A TISSUE MASS - Disclosed herein are high efficiency surgical devices and methods of using same using radio frequency (RF) electrical power to destroy, vaporize and remove soft tissues, such as tumors, both malignant and benign, from within a target surgical site. In one particularly preferred embodiment, the electrosurgical device employs a combination of rotary and translational motion to incrementally vaporize a calculated volume of tissue. According to the principles of this invention, the electrosurgical devices can be used with externally supplied conductive or non-conductive irrigants, whether liquid, gas, or a combination thereof, as well as without externally supplied liquids, a mode of operation often referred to as “dry field” environment. The electrosurgical devices may further optionally include aspiration components to permit removal of vaporization by-products. | 10-22-2009 |
20090264879 | Fluid-Assisted Medical Devices, Systems and Methods - Surgical devices, systems and methods for treating tissue are provided. Also provided are systems for treating tissue and methods of treating tissue. An exemplary surgical device comprises a handle ( | 10-22-2009 |
20090270856 | APPARATUS AND METHODS FOR PERFORMING MUCOSECTOMY - Apparatus and methods are provided for performing mucosectomy, such as to map out gastrointestinal surgery, including endoluminal gastric reduction. In one variation, tie apparatus comprises a separating element and an integrated resection element. In one variation, the apparatus is configured to simultaneously separate mucosal tissue from underlying muscularis tissue and to resect the separated mucosal tissue. Methods of using the apparatus are provided. | 10-29-2009 |
20090270857 | Ablation Device with Jaws - System, device and method for ablating target tissue adjacent pulmonary veins of a patient through an incision. An ablation device can include a hinge including a cam assembly, a moving arm, a floating jaw, and a lower jaw. Fingers can engage the floating jaw to hold the floating jaw in a first position with respect to the moving arm. Some embodiments of the invention can provide an ablation device including a central support, an upper four-bar linkage coupled to the central support, an upper jaw coupled to the upper linkage, a lower four-bar linkage coupled to the central support, and a lower jaw coupled to the lower linkage. Some embodiments of the invention can provide an ablation device having an upper jaw including a first cannula connection and a lower jaw including a second cannula connection. The system can include a first catheter coupled to the first cannula connection and a second catheter coupled to the second cannula connection. The first and second catheters can be inserted through the incision and can move the upper and lower jaws adjacent the pulmonary veins. | 10-29-2009 |
20090275936 | SYSTEM AND METHOD FOR APPLYING THERAPY TO AN EYE USING ENERGY CONDUCTION - Thermokeratoplasty is applied to achieve a customized reshaping of a cornea, especially, for the treatment of astigmatism. Energy is applied to the cornea in a customized pattern using a specific configuration of two conductors. In one embodiment, an outer conductor and an outer conductor are separated by a gap. When a conducting element is applied to the corneal surface the area of the cornea at the periphery of the inner conductor is subject to an energy pattern with substantially the same shape and dimension as the gap between the inner and outer conductors. The inner and outer conductors may be positioned and shaped to form a gap having any desirable size and/or shape, including non-annular and asymmetrical shapes. The gap may be configured by altering the spatial relationships between the inner conductor and the outer conductor, by altering the size, shape, and/or position of the inner and/or outer conductors, or by forming one or more indentations or protrusions in or on the inner conductor and/or the outer conductor. Additionally or alternatively, energy is applied to the cornea in a customized pattern defined by a specific arrangement of one or more dielectric materials providing varying impedance. | 11-05-2009 |
20090275937 | METHOD AND APPARATUS FOR MARKING A LUMENAL WALL - A marking apparatus includes a selectively inflatable balloon. The balloon includes an external lumen adapted for connection to a vacuum source. The external lumen includes ports for creating a vacuum at the ports sufficient to draw walls of the gastric cavity into contact with the external lumen. The balloon is further provided with RF energy delivery devices. In accordance with an alternate embodiment, a marking apparatus includes an elongated, hollow body, the hollow body including a proximal end and a distal end. The hollow body includes at least one suction trough in which a plurality of holes is disposed to draw suction on tissue. The at least one suction trough extends along a substantial portion of the hollow body as it extends from its distal end to its proximal end. | 11-05-2009 |
20090281534 | SYSTEM FOR DELIVERING THERAPY - The system of the preferred embodiments includes a first rotational element, a second rotational element, and a therapeutic source coupled to the rotational elements. The system permits simultaneous attachment to and movement around a surface of tissue, preferably during an ablation procedure (either during lesion creation or between lesion creation events), or during any other suitable procedure. The therapeutic source functions to translate along the path of tissue and deliver therapy as the first and second rotational elements rotate and roll along the path of tissue. The therapeutic source preferably delivers contiguous doses of therapy along the path of tissue. The system is preferably designed for delivering therapy to tissue and, more specifically, for delivering therapy to cardiac tissue. The system, however, may be alternatively used in any suitable environment and for any suitable reason. | 11-12-2009 |
20090281535 | ELECTROSURIGICAL INSTRUMENT AND METHOD - An electrosurgical instrument and method for treating varicose veins. In one embodiment, an elongate catheter has a distal working end that carries an electrosurgical energy delivery surface comprising at least one electrode with a positive temperature coefficient of resistance (PTCR) surface and/or an electrode with a pressure sensitive variable resistance to provide a smart surface for controlling Rf current flow at the interface of electrosurgical surface and the tissue. The electrode surface then can limit or modulate Rf energy delivery through the surface in response to the temperature of the surface or the engagement pressure of the surface against the engaged tissue. In operation, the smart electrosurgical surface prevents arcing at the electrode-tissue interface, and thus controls ohmic heating to prevent tissue desiccation, charring and emboli formation. | 11-12-2009 |
20090281536 | Medical Device For Diagnosing and Treating Anomalous Tissue and Method for Doing the Same - Disclosed herein are medical devices for diagnosing and treating anomalous tissue and methods of use. One embodiment of the medical device can comprise an energy source configured to emit at least an excitation beam and a therapeutic beam, a probe coupled to the energy source and configured to propagate the excitation and therapeutic beams with the beams capable of contact with the tissue, a sensor coupled to the probe that detects at least one predefined attribute of radiation emanating from the tissue when the tissue is subjected to the excitation beam and a controller coupled to the energy source and the sensor and programmed to selectively alternatively actuate the energy source to emit the excitation beam and the therapeutic beam in response to the detection of the at least one predefined attribute by the sensor. | 11-12-2009 |
20090281537 | METHOD AND APPARATUS FOR TREATING A FUNGAL NAIL INFECTION WITH SHORTWAVE AND/OR MICROWAVE RADIATION - The present invention relates to methods and devices for treating hard biological tissue (in particular, keratin-rich hard tissues) with electromagnetic energy having a frequency of at least 0.5 MHZ (megahertz) and less than 10 GHZ (gigahertz) (for example, HF, RF or microwave energy), and particularly, to methods and devices for treating infections, for example, fungal infections of the nail. | 11-12-2009 |
20090287205 | SYSTEMS AND METHODS FOR PREVENTING TISSUE POPPING CAUSED BY BUBBLE EXPANSION DURING TISSUE ABLATION - A system for controllably delivering ablation energy to tissue includes an ablation device operable to supply ablation energy to body tissue causing bubbles to form in the tissue, an ultrasound transducer configured to detect energy spontaneously emitted by collapsing or shrinking bubbles that are resonating in the tissue, and a control element operably coupled to the ablation device and the ultrasound transducer element, the control element being configured to adjust the ablation energy supplied to the tissue in response to the energy detected by the ultrasound transducer to prevent tissue popping caused by bubble expansion. | 11-19-2009 |
20090287206 | ELECTRODE FOR RADIOFREQUENCY TISSUE ABLATION - The present invention relates to an electrode for an electrosurgical unit for the use in ablating and necrosing a living tissue by RF electric energy. The present invention provides an electrode for an electrosurgical unit, including: a hollow electrode formed in an elongated hollow tube shape, a non-insulating region of a predetermined length being formed on one side of which, an insulating region being formed on an outer surface of which other than the non-insulating region; a saline solution circulation structure that supplies pressurized saline solution for cooling a living tissue which is in contact with the hollow electrode from the outside of the living tissue to the inside of the hollow electrode, and discharges the pressurized saline solution from the inside of the hollow electrode to the outside of the living tissue; and one or more saline solution discharge holes formed in the non-insulating region of the hollow electrode to discharge some of the circulating pressurized saline solution to the living tissue which is in contact with the hollow electrode. | 11-19-2009 |
20090287207 | APPARATUS FOR TRANSCUTANEOUSLY TREATING TISSUE - An apparatus for transcutaneously treating tissue beneath a skin surface using radiofrequency energy. The apparatus includes an electrode assembly supported by a handpiece. The electrode assembly includes an electrode configured to transfer the radiofrequency energy through the skin surface to the tissue. A force sensor, which is located in the handpiece, is configured to detect an amount of force applied by the electrode against the skin surface. | 11-19-2009 |
20090299360 | TISSUE ABLATION APPARATUS AND METHOD USING ULTRASONIC IMAGING - A coaxial cable apparatus which transmits radio frequency (RF) energy for the ablation of biological tissues has inner and outer coaxial conductors extending from a proximal portion to a distal portion. An RF antenna is disposed at the distal portion of the cable and transmits RF energy for ablation of a tissue region to be treated. At least one ultrasonic transducer is also disposed at the distal portion of the cable to direct ultrasonic frequency energy to a tissue region. The ultrasonic transducer detects reflected ultrasonic signals from the tissue region and provides a signal output which varies dependent on the density of tissue over the monitored tissue region. The reflected ultrasonic signal can be monitored before, during, and after ablation treatment. | 12-03-2009 |
20090299361 | DISPOSABLE ELECTROMAGNETIC ENERGY APPLICATOR AND METHOD OF USING IT - A skin treatment apparatus that includes, a disposable electrode carrier with a plurality of voltage-applying dome-shaped elements protruding from the surface of the electrode carrier. Further, the protruding elements are spaced apart in a pattern. The apparatus operates to apply a voltage to at least some of the protruding elements. The apparatus applies a voltage to the protruding elements with a magnitude that is sufficient to result in an electrical break down of the skin and thereby cause electric current enabling the desired treatment. | 12-03-2009 |
20090306641 | FILTER FOR SIMULTANEOUS PACING AND ABLATION - Medical apparatus includes a pacing generator, which has first active and indifferent outputs and is configured to generate electrical pacing pulses between the first active and indifferent outputs for pacing a heart of a subject. A radio frequency (RF) generator has second active and indifferent outputs and is configured to generate RF electrical energy of a predetermined frequency between the second active and indifferent outputs for application to the heart of the subject simultaneously with the pacing pulses. A filter includes a first branch connected between the first and second active outputs and a second branch connected between the first and second indifferent outputs, each of the first and second branches including one or more notch filters having a high impedance in a vicinity of the frequency of the RF electrical energy. | 12-10-2009 |
20090306642 | METHOD FOR LOW TEMPERATURE ELECTROSUGERY AND RF GENERATOR - Method and apparatus for electrosurgery including tissue coagulation using very high voltage pulses of electrical energy applied to the electrosurgical probe. This minimizes heating of the surrounding tissue in the probe and is especially suitable for precise and limited coagulation and fulguration without excessive tissue charring or other damage. The power at rated load of the applied pulses to the probe is typically over 300 W and the duration of the on time is very short, so each group of pulse bursts is of relatively low duty cycle. An RF generator is also provided for delivering electrical energy to an electrosurgical probe with the proper characteristics, including fast switching times. | 12-10-2009 |
20090306643 | METHOD AND APPARATUS FOR DELIVERY AND DETECTION OF TRANSMURAL CARDIAC ABLATION LESIONS - During cardiac wall tissue ablation with an RF catheter, the observation of an 8 to 12 ohm drop in the tissue impedance is indicative of the production of a transmural lesion. Due to a magnetic catheter's ability to stay in the same position throughout the cardiac cycle and the consistency of forces applied throughout the cardiac cycle, the impedance measurement from the distal electrode of the magnetic catheter is uniquely useful in determining the achievement of a transmural lesion. The use of this impedance measurement during ablation with a magnetic catheter can thus be used as an indication of when the ablation has achieved a successful treatment endpoint. An RF generator's impedance measurement along with knowledge of the navigational state of a magnetic catheter can thus be used to control the delivery of energy for the purpose of delivering only as much RF energy as is necessary to achieve a clinically effective lesion and to stop RF energy delivery prior to the onset of an adverse event. | 12-10-2009 |
20090306644 | SYSTEMS, ASSEMBLIES, AND METHODS FOR TREATING A BRONCHIAL TREE - Systems, assemblies, and methods to treat pulmonary diseases are used to decrease nervous system input to distal regions of the bronchial tree within the lungs. Treatment systems damage nerve tissue to temporarily or permanently decrease nervous system input. The treatment systems are capable of heating nerve tissue, cooling the nerve tissue, delivering a flowable substance that cause trauma to the nerve tissue, puncturing the nerve tissue, tearing the nerve tissue, cutting the nerve tissue, applying pressure to the nerve tissue, applying ultrasound to the nerve tissue, applying ionizing radiation to the nerve tissue, disrupting cell membranes of nerve tissue with electrical energy, or delivering long acting nerve blocking chemicals to the nerve tissue. | 12-10-2009 |
20090306645 | Electrosurgery Devices - Devices for electrosurgery by means of oxy-hydro combustion. Deleterious effects to tissue are minimized by means of control of acid-base shift reactions, which reactions can further be employed to control oxy-hydro combustion reactions. In one embodiment, radiofrequency energy in electrical connection with electrodes is employed to induce electrolysis in an aqueous salt environment, thereby producing oxygen and hydrogen, with the same energy source employed to initiate a combustion reaction. | 12-10-2009 |
20090306646 | APPARATUS AND METHOD FOR INJECTION ENHANCEMENT OF SELECTIVE HEATING OF A DEPOSIT IN TISSUES IN A BODY - An apparatus and method for providing hyperthermia treatments in a deposit surrounded by tissue in a body is disclosed. A radio frequency antenna array is used to direct a radio frequency signal at a selected frequency into the deposit so that the radio frequency signal will have a selected wavelength in the deposit to selectively heat the deposit to a temperature greater than the surrounding tissue through resonant heating within the deposit. An injectable medium is injected in the deposit to increase a dielectric value and/or conductivity value of the deposit. The injectable medium is selected to increase a specific absorption rate of the radio frequency signal within the deposit relative to the surrounding tissue. | 12-10-2009 |
20090312754 | METHOD AND APPARATUS FOR MEASURING CATHETER CONTACT FORCE DURING A MEDICAL PROCEDURE - A method for measuring the contact force exerted on tissue by a probe for heating the tissue and containing an antenna which is connected to a radiometer whose output reading indicates the temperature at depth of the tissue contacted by the probe comprises displaying the output reading of the radiometer, applying sufficient power to the probe to heat the tissue to a selected first temperature that is not lethal to the tissue, moving the probe into contact with the tissue, observing the increase in the displayed temperature reading that occurs when the probe contacts the tissue, and advancing the probe toward the tissue until the displayed temperature reading reaches a value corresponding to a selected tissue contact force. After the probe position in the tissue has stabilized, the applied power to the probe may be increased to heat the tissue to a selected second temperature that is lethal to tissue for a sufficient time to ablate the tissue followed by lowering the tissue heating to a sub-lethal temperature. Apparatus for practicing the method is also disclosed. | 12-17-2009 |
20090318914 | SYSTEM AND METHOD FOR ABLATIONAL TREATMENT OF UTERINE CERVICAL NEOPLASIA - The invention provides a system, devices, and methods for ablating abnormal epithelial tissue of the uterine cervix. Embodiments of an ablation device include an operative head with a support surface adapted to conformably engage and therapeutically contact the cervix, and an energy delivery element on the support surface. The energy delivery element is configured to deliver energy, such as RF energy, to the tissue in a manner that controls the surface area and depth of ablation. The device may further include a shaft and a handle to support the ablation device, and may further include a speculum to facilitate access to the cervix. A system to support the operation of the ablation device includes a generator to deliver energy to the energy delivery element. Embodiments of a method for ablating abnormal cervical tissue include inserting an ablation device intravaginally to contact the cervix, aligning an energy delivery element support surface conformably against a region of the cervix with abnormal tissue, and ablating the tissue. | 12-24-2009 |
20090318915 | Electrosurgical generator and system - An electrosurgical system has an electrosurgical generator with a multiple-phase RF output stage coupled to a multiple-electrode electrosurgical instrument. The instrument has three treatment electrodes each of which is coupled to a respective generator output driven from, for instance, a three-phase output transformer. Continuous RF output voltage waveforms are simultaneously delivered to respective generator outputs at the operating frequency, each waveform being phase-displaced with respect to the other waveforms. The magnitude of the RF output voltage waveform delivered to at least one of the generator outputs is sufficient to cause tissue vaporisation at the respective treatment electrodes when the system is used for tissue treatment. Also disclosed is an electrosurgical generator in which the output transformer has windings forming at least three phases, the transformer core being constructed to provide at least three magnetic circuits each of which is inductively linked to the windings of at least two of the three phases. | 12-24-2009 |
20090318916 | Electrosurgical Methods and Devices Employing Semiconductor Chips - This disclosure relates generally to electrosurgical methods and devices. In one embodiment, an electrosurgical device is provided suitable for applying RF energy to a treatment site. The electrosurgical device comprises one or more RF generators disposed on a semiconductor chip. Also provided are methods of use of such an electrosurgical device, as well as other electrosurgical devices. The methods and devices disclosed herein find utility, for example, in the field of medicine. | 12-24-2009 |
20090326527 | Cardiac Mapping Instrument with Shapeable Electrode - An instrument including an elongated shaft and a non-conductive handle is disclosed. The shaft defines a proximal section and a distal section. The distal section forms an electrically conductive tip. Further, the shaft is adapted to be transitionable from a straight state to a first bent state. The shaft is capable of independently maintaining the distinct shapes associated with the straight state and the first bent state. The handle is rigidly coupled to the proximal section of the shaft. The instrument is useful for epicardial pacing and/or mapping of the heart for temporary pacing on a beating heart, for optimizing the placement of ventricular leads for the treatment of patients with congestive heart failure and ventricular dysynchrony and/or for use in surgical ablation procedures. | 12-31-2009 |
20090326528 | SYSTEM AND METHOD FOR HEATING BIOLOGICAL TISSUE VIA RF ENERGY | 12-31-2009 |
20100004648 | Method to treat gastric reflux via the detection and ablation of gastro-esophageal nerves and receptors - A method of treating a sphincter provides a sphincter electropotential mapping device with at least one of a mapping electrode or a treatment electrode. The sphincter electropotential mapping device is introduced into at least a portion of the sphincter, the lower esophageal sphincter, stomach, the cardia or the fundus. Bioelectric activity causing a relaxation of the sphincter is detected and energy is delivered from either the mapping electrode or the treatment electrode to treat the bioelectric activity. A method of treating a sphincter provides a sphincter electropotential mapping device with at least one of a mapping electrode or a treatment electrode. The sphincter electropotential mapping device is introduced into at least a portion of the sphincter, the lower esophageal sphincter, stomach, the cardia or the fundus. Bioelectric activity causing a relaxation of the sphincter is detected and energy is delivered from either the mapping electrode or the treatment electrode to treat the bioelectric activity. | 01-07-2010 |
20100004649 | RF Electrode array for low-rate collagen shrinkage in capsular shift procedures and methods of use - Methods and apparatus are provided for an achieving low-rate collagen shrinkage using an electrode array comprising an elongated insulator strip having at least one pair of spaced-apart bi-polar RF electrodes, and a “channeling” disposed on the strip between the bi-polar electrodes to direct the flow of RF current therebetween. The channeling electrode is not directly coupled to the RF power source, but only indirectly through the tissue in contact with the channeling electrode. The apparatus enables low RF power levels (e.g., 0.5 watts to 25 watts) to be applied over time intervals of 5 seconds to 180 seconds to attain low-rate collagen shrinkage by directing or focusing the path of the RF current. | 01-07-2010 |
20100010484 | DEVICES AND METHODS FOR PERCUTANEOUS ENERGY DELIVERY - The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect. | 01-14-2010 |
20100016848 | Catheter and Method for Improved Ablation - An ablation electrode is mounted on the distal end of a catheter with a first portion inside and a second portion outside the catheter. The second portion is adapted to have a surface that makes maximum contact with a tissue to be ablated, leaving a minimum area not covered by the tissue and potentially exposed to blood. The first portion is adapted to provide an extended surface area for efficient exchange of heat with a coolant flowing inside the catheter. Outlets provided near the area not covered by the tissue in the second portion prevents blood from getting close to or come directly in contact with the area, thereby greatly reducing formation of dangerous blood clots. The minimizing of an electrical circuit through blood greatly reduces wasted power into the electrode so that the efficiently cooled electrode is not burdened. The catheter preferably has multiple electrodes with similar features. | 01-21-2010 |
20100016849 | RF ELECTRODE FOR AESTHETIC AND BODY SHAPING DEVICES AND METHOD OF USING SAME - A segmented RF electrode with one central segment delivering the treatment energy and at least one peripheral segment arranged around the perimeter of the central segment and a temperature control element communicating with the peripheral segment. The electrode is incorporated into an applicator for aesthetic and other skin treatments. | 01-21-2010 |
20100022999 | SYMMETRICAL RF ELECTROSURGICAL SYSTEM AND METHODS - Systems, apparatus, and methods for treating a patient's tissue via electric energy delivered concurrently from a first electrode of a first handpiece and a second electrode of a second handpiece. Each of the first and second handpieces may have the same or similar structure and may be separately manipulable to different locations on the patient's skin to allow the rapid treatment of target tissue(s) at various regions of the patient's body. The first and second handpieces may each be coupled to an electrosurgical generator configured for providing first and second AC voltages of equal magnitude and opposite polarity to the first and second electrodes, respectively. The first and second electrodes may each comprise a spiral inductor. | 01-28-2010 |
20100023000 | FREQUENCY SELECTIVE PASSIVE COMPONENT NETWORKS FOR IMPLANTABLE LEADS OF ACTIVE IMPLANTABLE MEDICAL DEVICES UTILIZING AN ENERGY DISSIPATING SURFACE - Decoupling circuits are provided which transfer energy induced from an MRI pulsed RF field to an energy dissipating surface. This is accomplished through broadband filtering or by resonant filtering. In a passive component network for an implantable leadwire of an active implantable medical device, a frequency selective energy diversion circuit is provided for diverting high-frequency energy away from a leadwire electrode to a point or an area spaced from the electrode, for dissipation of high-frequency energy. | 01-28-2010 |
20100023001 | Microwave endoscope forceps - Provided is an operating tool for organism, in particular, a microwave endoscope forceps. In terms of the operating tool for organism, provided is a multifunctional operating tool which has holding and scissors functions simultaneously, and may further perform coagulation (tissue fixation) by microwaves. The operating tool has no definite fulcrum, and has both the holding and scissors functions with a simple structure by deforming a long-track rod called beam. Two blades are insulated from each other so as to allow microwave current supply. With this structure, an operating tool having three functions, i.e., “a holding function”, “a coagulating function”, and “a cutting function” with a single tool may be developed. | 01-28-2010 |
20100023002 | METHOD FOR ABLATING TISSUE WITH MULTIPLE ABLATION PROBES - A tissue ablation system comprises an ablation source, such as an RF ablation source, configured for generating a common power signal, and a power multiplexor configured for splitting the power signal into first and second power signals, substantially attenuating the second power signal relative to the first power signal to create nominal and attenuated power signals, and sequentially delivering the nominal power signal to each tissue ablation probe, while delivering the attenuated power signal to the remaining ablation probes to which the nominal power signal is currently not delivered. | 01-28-2010 |
20100023003 | SKIN REJUVINATION RESURFACING DEVICE AND METHOD OF USE - A skin rejuvenation resurfacing apparatus comprising an oscillating, reciprocating high speed, needle-based device and its related procedure for inducing mechanical trauma to an area of the skin to be treated. | 01-28-2010 |
20100030206 | Tissue Ablation System With Phase-Controlled Channels - A system for applying energy to tissue via a plurality of channels includes a controller adapted to connect to an energy source, wherein the controller is configured to control a phase relationship between electrical signals in each channel, and a number of energy delivery devices, each energy delivery device operatively coupled to the controller via a corresponding one of the channels. | 02-04-2010 |
20100030207 | SURGICAL ANTENNA - A surgical instrument ( | 02-04-2010 |
20100030208 | Method for Ablation Volume Determination and Geometric Reconstruction - A method for determining a volume of ablated tissue is provided. The method includes the steps of: supplying energy to tissue to create an ablation volume therein; excising one or more slices of the tissue having a portion of the ablation volume therein; and subjecting at least a portion of the slice to a first contrast agent for a predetermined period of time, wherein the contrast agent is configured to color dead cells within the ablation volume. | 02-04-2010 |
20100036368 | Method of selectively heating adipose tissue - A method of operating a tissue treatment apparatus for heating adipose tissue located beneath the dermis with high frequency energy from an electrode. The method includes delivering high frequency energy from the electrode to the adipose tissue at a dose that is applied over a period of time sufficient to heat the adipose tissue while at the same time not cause significant heating of the dermis. Embodiments of the method include cooling the electrode to cool a region of tissue next to the electrode. | 02-11-2010 |
20100036369 | MICROWAVE ARRAY APPLICATOR FOR HYPERTHERMIA - Apparatus ( | 02-11-2010 |
20100036370 | ELECTROSURGICAL INSTRUMENT JAW STRUCTURE WITH CUTTING TIP - An electrosurgical instrument for scoring, welding and transecting tissue is provided. The electrosurgical instrument comprises first and second openable-closeable jaws and at least one scoring electrode extending from a distal end of at least one of the first and second openable-closeable jaws. The first and second openable-closeable jaws comprises first and second conductive tissue engaging surfaces, respectively, and first and second insulating members, respectively. The scoring electrode is coupled with at least one of the first and second insulating members. The at least one scoring electrode can be activated independently from the first and second openable-closeable jaws so that the electrosurgical instrument can independent score tissue and weld tissue. | 02-11-2010 |
20100036371 | ELECTROSURGICAL INSTRUMENT AND SYSTEM - An electrosurgical instrument comprises a body portion, an actuator mechanism associated with the body portion, and first and second jaw members each having a jaw body. The first jaw member includes a first electrode having a relatively large area conductive seal surface and a relatively smaller area edge portion. The second jaw member includes a second electrode also having a relatively large area conductive seal surface and a relatively smaller area edge portion. The first jaw member comprises a third electrode associated with its jaw body, and an insulator separating the first electrode from the third electrode. Operation of the actuator mechanism moves one or both of the first and second jaw members between a first position in which the jaw members are open, a second position in which the first and second jaw members are sufficiently closed so as to be capable of grasping tissue therebetween, and a third position in which the first and second jaw members are further closed such that the conductive seal surfaces are adjacent to one another other such that predominantly the edge portions of one or both of the seal surfaces are exposed. The exposed area of the third electrode is greater than that of the exposed edge portions. When the electrosurgical instrument is connected to an electrosurgical generator, the electrosurgical generator is capable of directing a coagulating RF waveform between the first and second electrodes when the jaw members of the electrosurgical instrument are in their second position with tissue grasped therebetween. The electrosurgical generator is also capable of directing a cutting RF waveform between one or both of the first and second electrodes and the third electrode, when the jaw members of the electrosurgical instrument are in their third position. | 02-11-2010 |
20100036372 | Moisture transport system for contact electrocoagulation - An apparatus and method for use in performing ablation or coagulation of organs and other tissue includes a metallized fabric electrode array which is substantially absorbent and/or permeable to moisture and gases such as steam and conformable to the body cavity. The array includes conductive regions separated by insulated regions arranged to produce ablation to a predetermined depth. Following placement of the ablation device into contact with the tissue to be ablated, an RF generator is used to deliver RF energy to the conductive regions and to thereby induce current flow from the electrodes to tissue to be ablated. As the current heats the tissue, moisture (such as steam or liquid) leaves the tissue causing the tissue to dehydrate. Suction may be applied to facilitate moisture removal. The moisture permeability and/or absorbency of the electrode carrying member allows the moisture to leave the ablation site so as to prevent the moisture from providing a path of conductivity for the current. | 02-11-2010 |
20100042090 | Microwave Surgical Device - The solution of the problem to be solved is the provision of a means for determining timing both accurately and securely at which a treatment is shifted from gripping and coagulation (hemostasis or sealing) to resection by using a multifunctional treatment tool capable of exfoliation, gripping, coagulation (hemostasis or sealing) and resection of the treated region in a bipolar microwave treatment tool. A microwave surgical device control method and a device, in which the completion of coagulation (hemostasis or sealing) of tissue is detected and a microwave oscillation output is controlled by making use of the change in the direct current electric resistance value due to the reduction in the amount of water as the temperature rise of the tissue at the time of heating and coagulation of the tissue in the treated region with microwaves. | 02-18-2010 |
20100042091 | Surgical instruments and techniques for treating gastro-esophageal reflux disease - Instruments for thermally-mediated treatment of a patient's lower esophageal sphincter (LES) to induce an injury healing response to thereby populate the extracellular compartment of walls of the LES with collagen matrices to alter the biomechanics of the LES to provide an increased intra-esophageal pressure for preventing acid reflux. A preferred embodiment is a bougie-type device for trans-esophageal introduction that carries conductive electrodes for delivering Rf energy to walls of the LES (i) to induce the injury healing response or (ii) to “model” collagenous tissues of the LES by shrinking collagen fibers therein. | 02-18-2010 |
20100042092 | Method and device for anastomoses - Provided herein is a device for fusing at least two materials, of which at least one material is a tissue, with an inductively fusable biocompatible material having therewithin a means for controlling output of heat generated therein by the oscillating magnetic field induced by at least one induction coil to which radiofrequency energy is applied. Also provided is a method for fusing the at least two materials using this device. | 02-18-2010 |
20100049185 | Microwave Antenna Assembly Having a Dielectric Body Portion With Radial Partitions of Dielectric Material - A microwave antenna assembly includes first and second elongated conductors, and a dielectric body portion. The first elongated conductor is associated with a first radiating portion at least partially along the length thereof. A second elongated conductor is disposed within the first elongated conductor and is associated with a second radiating portion at least partially along the length thereof. The dielectric body portion is disposed along the length of at least one of the first and second elongated conductors and the dielectric body portion includes two or more radial partition of dielectric material having difference dielectric constants. | 02-25-2010 |
20100049186 | NONINVASIVE DEVICES, METHODS, AND SYSTEMS FOR SHRINKING OF TISSUES - The invention provides improved methods for modifying collagenous tissues, particularly for treating urinary incontinence in a noninvasive manner. The methods typically include inserting a probe into a patient's urethra, transmitting electromagnetic energy from the probe to a collagneous target tissue, and cooling the tissue in the vicinity of the probe. The probe may include an expandable element at or near the distal end that is configured to expand within the patient's bladder. The expandable element may anchor the probe before or during treatment. | 02-25-2010 |
20100057070 | Microwave Shielding Apparatus - An isolation apparatus for reducing radiated emissions of a microwave energy delivery system including an isolation circuit board and a shield coupling, the isolation circuit board and shield coupling configured to capacitively couple a microwave generator and a coaxial transmission cable and the isolation circuit board further configured to pass energy at a fundamental frequency between the microwave generator and the coaxial transmission cable. | 03-04-2010 |
20100057071 | ELECTROSURGICAL INSTRUMENT AND SYSTEM - An electrosurgical system for cutting and coagulating tissue includes a generator for generating radio frequency (RF) power, and an electrosurgical instrument. The instrument includes a pair of blades pivotally joined for relative movement in a scissors-like action between open and closed positions, each of said blades including a conductive blade member and a conductive electrode electrically isolated from the blade member by means of an insulation member. A first one of either the conductive blade member or the conductive electrode constitutes an inner electrode on each blade, which are disposed in face-to-face relationship. A second one of either the conductive blade member or the conductive electrode constitutes an outer electrode on each blade spaced from the inner electrode. The instrument further includes an actuation mechanism for effecting relative movement of the blades in said scissors-like action, the generator including at least one source of RF power and a controller such that the generator is capable of delivering a first cutting RF waveform to the electrosurgical instrument or a second coagulating RF waveform to the electrosurgical instrument. The system further includes a switching circuit such that the first cutting RF waveform is delivered between the inner and outer electrodes on each blade, and the second coagulating RF waveform is delivered between the outer electrodes on each blade. | 03-04-2010 |
20100057072 | Irrigated Ablation Catheter System and Methods - An ablation catheter for performing tissue ablation, having an elongate shaft with a lumen and a tip ablation electrode at the distal end of the shaft. The tip electrode has a fluid exit port opening through the surface of the tip electrode and at least one channel extending along the surface of the tip electrode to allow fluid passage in the event that the fluid exit port is blocked. The catheter has a connector to a cooling fluid source, and a fluid delivery tube within the shaft lumen to deliver cooling fluid from the connector to the fluid exit port. | 03-04-2010 |
20100057073 | Irrigated Ablation Catheter System and Methods - An ablation catheter for performing tissue ablation has an elongate shaft with a lumen. A tip ablation electrode is mounted on the distal end of the shaft. The tip electrode has walls that, together with the plug, define a chamber. The tip electrode has a fluid exit port. A shaft ablation electrode is mounted on the shaft proximal to the tip electrode. The catheter has a cooling fluid delivery system with a connection to a cooling fluid source. A fluid within the lumen of the elongate shaft penetrates the plug and delivers cooling fluid to the fluid exit port. | 03-04-2010 |
20100057074 | Irrigated Ablation Catheter System and Methods - An ablation catheter for performing tissue ablation has an elongate shaft with a lumen. A tip ablation electrode is mounted on the distal end of the shaft. The tip electrode has walls that, together with the plug, define a chamber. The tip electrode has a fluid exit port. The catheter has a cooling fluid delivery system with a connection to a fluid source and a fluid delivery tube within the lumen of the elongate shaft. The fluid delivery tube penetrating said plug and delivers fluid to the fluid exit port. The catheter has a valve assembly in located in the chamber between the fluid delivery tube and the fluid exit port. The valve assembly prevents the flow of cooling fluid through the fluid delivery tube when in the closed position. | 03-04-2010 |
20100057075 | Method and device for anastomoses - Provided herein is a device for use in an anastomosis of tissue(s) comprising a biocompatible material and a means of applying radiofrequency energy or electrical energy to generate heat within said biocompatible material. The device also may be used to bond or fuse at two materials where at least one of the material is a tissue. Also provided are methods to anastomose tissue or to bond or to fuse these materials using these devices. | 03-04-2010 |
20100063494 | Electrosurgical Apparatus With High Speed Energy Recovery - A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal generated by the power supply and a feedback signal generated in response to the application of energy to tissue. A discharge circuit is configured to control the discharge of the output of the power supply to an inductive load disposed in parallel with the output of the power supply based on the comparison between the output signal and the feedback signal. The discharge circuit provides a rapid response and time rate control of the delivered electrosurgical energy by controlling the power supply and delivered RF energy in real time, based on a feedback signal generated in response to the application of energy to tissue. | 03-11-2010 |
20100063495 | SYSTEM FOR TISSUE ABLATION - Systems for treating a mucosal surface of an alimentary canal tissue region are provided. The systems can include an elongate support structure, an expandable member positionable at a distal portion of the support structure and one or more radio frequency (RF) ablation electrodes carried by the expandable member. The elongate support structure and the expandable member can be adapted to place the one or more electrodes in contact with a mucosal surface of an alimentary canal tissue region. The system can further include an RF energy source connected to the one or more electrodes. | 03-11-2010 |
20100076423 | EYE THERAPY SYSTEM - The cornea is reshaped in multiple steps according to varying amounts of energy in varying patterns and/or at varying locations to achieve a customized reshaping of the cornea to address the specific needs of an individual patient. The varying amounts of energy may be applied via one or more conducting elements, which include an outer conductor and an inner conductor disposed within the outer conductor, a distal end of the outer conductor and the inner conductor defining the varying patterns. For example, one step may form a substantially circular lesion to flatten a first portion of the cornea to treat presbyopia, while another step may form a substantially circular and concentric lesion having a greater diameter to steepen a second portion of the cornea to treat hyperopia. Advantageously, continuous transitional regions are formed relative to the reshaped portions to provide vision for intermediate distances. | 03-25-2010 |
20100076424 | RADIOMETRIC HEATING/SENSING PROBE - A radiometric heating/sensing probe for radiating electromagnetic waves of a first frequency capable of heating tissue and detecting electromagnetic waves of a second frequency emitted by the tissue indicating tissue temperature. The probe includes a dual frequency antenna, a signal transmitting path to the antenna and a signal receiving path from the antenna to a radiometer. A diplexer connected between those paths inside the probe includes a quarter wave stub in the form of a shorted slab line-type transmission line in the signal transmitting path. The entire probe package is only about 0.4 in. long and 0.08 in. in diameter so that it can be used in many minimally invasive applications. | 03-25-2010 |
20100082022 | DELIVERED ENERGY GENERATOR FOR MICROWAVE ABLATION - A microwave system for generating microwave energy to tissue according to an energy control algorithm is disclosed. The system includes a microwave generator configured to select an energy control algorithm, programmed in the microwave generator that corresponds to a microwave energy delivery device connected to the generator. | 04-01-2010 |
20100082023 | MICROWAVE SYSTEM CALIBRATION APPARATUS, SYSTEM AND METHOD OF USE - A microwave system calibration apparatus including an antenna portion configured to deliver microwave energy to tissue, a transmission line portion configured to receive a microwave energy signal from a microwave source and to selectively deliver the microwave energy signal to the antenna portion and a switching mechanism connected between the antenna portion and the transmission line portion. The transmission line includes an inner conductor having a length, an outer conductor concentrically surrounding the inner conductor along the length and a dielectric material separating the inner and outer conductors. The inner conductor or the outer conductor of the transmission line portion is electrically connected to the antenna. The switching mechanism is configured to electrically disconnect the transmission line portion from the antenna portion in a first condition and further configured to connect the inner conductor to the outer conductor in a second condition. | 04-01-2010 |
20100082024 | INTERMITTENT MICROWAVE ENERGY DELIVERY SYSTEM - An intermittent microwave energy delivery system for use in testing microwave energy systems and devices and for use in performing medical procedures including a microwave energy source configured to provide a continuous microwave energy signal, an energy delivery network configured to intermittently transmit a portion of the continuous microwave energy signal, a resistive load configured to dissipate the microwave energy signal; and a switching network configured to switch the continuous microwave energy signal between the microwave energy network and the resistive load. The continuous microwave energy signal is time proportioned between the energy delivery network and the resistive load. | 04-01-2010 |
20100082025 | MICROWAVE ABLATION GENERATOR CONTROL SYSTEM - A microwave energy delivery and measurement system, including a microwave energy source configured to delivery microwave energy to a microwave energy delivery device, a measurement system configured to measure at least one parameter of the microwave energy delivery device and a switching network configured to electrically isolate the microwave energy source and the measurement system. The measurement system is configured to actively measure in real time at least one parameter related to the microwave energy delivery device. | 04-01-2010 |
20100082026 | Electrosurgical instrument and system - An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes. | 04-01-2010 |
20100087808 | Combined Frequency Microwave Ablation System, Devices and Methods of Use - A system for delivering electrosurgical energy, the system including a housing having an antenna attached to the distal end thereof configured to receive a microwave signal and radiate energy at two or more wavelengths and a microwave generator operably connecting to the antenna that provides the microwave signal to the antenna. The microwave generator generates a combined microwave signal containing microwave energy having at least a first and a second wavelength; wherein the at least a first and second wavelengths are capable of creating resonance in the antenna. | 04-08-2010 |
20100087809 | Sphincter treatment apparatus - A sphincter treatment apparatus includes an energy delivery device introduction member including a proximal end with a first radius of curvature and a distal end with a second radius of curvature. The introduction member is configured to be introduced into the sphincter in a non-deployed state and to be expanded to a deployed state to at least partially expand the sphincter or an adjoining structure. An energy delivery device is coupled to the introduction member. A retainer member is coupled to the energy delivery device introduction member and configured to controllably position the introduction member in an orifice of the sphincter. | 04-08-2010 |
20100094271 | Apparatus, System and Method for Monitoring Tissue During an Electrosurgical Procedure - A system for monitoring and/or controlling tissue modification during an electrosurgical procedure is provided. The system includes an electrosurgical apparatus adapted to connect to an electrosurgical generator. The electrosurgical apparatus configured to transmit energy to tissue. The system also includes a control system having one or more electromagnetic wave sources configured to generate the interrogator wave of one or more frequencies adjacent tissue. One or more sensors are configured to transmit and sense a reflected portion of the interrogator wave of at least one frequency to determine dielectric boundary data. A processor operatively coupled to the control system and to the electrosurgical generator configured to control the delivery of electrosurgical energy from the electrosurgical generator to tissue based on dielectric boundary data provided by the one or more sensors. | 04-15-2010 |
20100094272 | Antenna Assemblies for Medical Applications - A device for directing energy to a target volume of tissue includes a helical antenna assembly that includes a helical antenna radiating section having a helical antenna element. The helical antenna assembly is capable of operating in at least one of a first mode of operation for directing energy to a first portion of the target volume of tissue and a second mode of operation for directing energy to a second portion of the target volume of tissue. | 04-15-2010 |
20100094273 | Antenna Assemblies for Medical Applications - A device for directing energy to a target volume of tissue includes a monopole antenna assembly that includes a monopole antenna radiating section having a monopole antenna element surrounded by a dielectric material. The monopole antenna assembly also includes a ground plane disposed at a proximal end of the monopole antenna radiating section, wherein the ground plane is configured to direct energy into the target volume of tissue. | 04-15-2010 |
20100094274 | METHODS, SYSTEM AND APPARTUS FOR THE DETECTION, DIAGNOSIS AND TREATMENT OF BIOLOGICAL RHYTHM DISORDERS - Method, system and apparatus to detect, diagnose and treat biological rhythm disorders. In preferred particularly desirable embodiment relating to the real-time detection of heart rhythm disorders, this invention identifies localized sources for complex rhythms including atrial fibrillation to guide the localized application of energy to modify the source and treat the rhythm disorder. | 04-15-2010 |
20100094275 | Arc Based Adaptive Control System for an Electrosurgical Unit - A system and method for performing electrosurgical procedures are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue in form of one or more electrosurgical waveforms having a crest factor and a duty cycle. The system also includes sensor circuitry adapted to measure impedance and to obtain one or more measured impedance signals. The sensor circuitry is further adapted to generate one or more arc detection signals upon detecting an arcing condition§. The system further includes a controller adapted to generate one or more target control signals as a function of the measured impedance signals and to adjust output of the electrosurgical generator based on the arc detection signal. An electrosurgical instrument is also included having one or more active electrodes adapted to apply electrosurgical energy to tissue. | 04-15-2010 |
20100100091 | TISSUE ABLATION SYSTEMS - Tissue is treated using a radiofrequency power supply connected to an applicator having a chamber filled with an electrically non-conductive gas surrounded by a thin dielectric wall. A radiofrequency voltage is applied at a level sufficient to ionize the gas into a plasma and to capacitively couple the ionized plasma with the tissue to deliver radiofrequency current to ablate or otherwise treat the tissue. | 04-22-2010 |
20100100092 | Apparatus and Method for Selectively Heating a Deposit in Fatty Tissue in a Body - Heat treatment is applied to tissue in need of such treatment which is surrounded by tissue not in need of such treatment, by positioning a deposit within the surrounding tissue adjacent the tissue in need of treatment. The dielectric constant and/or the conductivity of the deposit is greater than that of the surrounding tissue. A radio frequency antenna or antenna array directs a radio frequency signal at a selected frequency into the deposit. The deposit has a diameter within a range of about 0.5 times to about 0.16 times the wavelength of the radio frequency signal within the surrounding tissue. The deposit is heated, at least partially through resonant heating, to a temperature greater than the surrounding tissue to apply heat treatment to the tissue in need of treatment. The deposit may take the form of a balloon of a Mammosite® type device to provide hyperthermia treatment in conjunction with radiation treatment of a breast after a lumpectomy. | 04-22-2010 |
20100106151 | SURGICAL INSTRUMENT FOR PERFORMING CONTROLLED MYOTOMIES - A surgical instrument ( | 04-29-2010 |
20100106152 | ENDOMETRIAL ABLATION METHOD - Systems and methods for endometrial ablation. The systems include a handle and elongated introducer sleeve extending to an expandable working end having a fluid-tight interior chamber. A thin dielectric wall surrounds at least a portion of the interior chamber and has an external surface for contacting endometrial tissue. The thin dielectric wall surrounds a collapsible-expandable frame and receives an electrically non-conductive gas. First and second polarity electrodes are exposed to the interior and exterior of the chamber, respectively. A radiofrequency power source operatively connects to the electrode arrangement to apply a radiofrequency voltage across the first and second electrodes, wherein the voltage is sufficient to initiate ionization of the neutral gas into a conductive plasma within the interior chamber, and to capacitively couple the current in the plasma across the thin dielectric wall to ablate endometrial tissue engaged by the external surface of the dielectric structure. | 04-29-2010 |
20100106153 | ELECTROSURGICAL INSTRUMENT WITH AN ABLATION MODE AND A COAGULATION MODE - Electrosurgical instruments are configured to selectively perform ablation or coagulation as desired. The electrosurgical instruments include at least two electrodes on the electrode probe that can be activated using an RF generator. The electrosurgical instruments are selectively switchable between an ablation mode and a coagulation mode by changing the amount of active electrode surface area. In particular, in the ablation mode, a relatively small electrode surface area is active. Thus, for a given power input, the current density is relatively high. In the coagulation mode, the active electrode surface area is increased, thereby reducing the current density in the coagulation mode for the given power input. | 04-29-2010 |
20100114086 | METHODS, DEVICES, AND SYSTEMS FOR NON-INVASIVE DELIVERY OF MICROWAVE THERAPY - Methods, apparatuses and systems are provided for non-invasive delivery of microwave therapy. Microwave energy may be applied to epidermal, dermal and subdermal tissue of a patient to achieve various therapeutic and/or aesthetic results. In one embodiment, the microwave energy is applied to a target tissue via an energy delivery applicator connected to an energy generator. The energy delivery applicator may comprise one or more antennas, including monopole, dipole, slot and/or waveguide antennas (among others) that are used to direct the microwave energy to the target tissue. The energy delivery applicator may also comprise a cooling element for avoiding thermal destruction to non-target tissue and/or a suction device to localize thermal treatment at specific portions of a skin fold. | 05-06-2010 |
20100114088 | Electrosurgical Pencil With Drag Sensing Capability - An electrosurgical pencil configured and adapted to support an electrocautery blade. A strain gauge is affixed to the proximal end of the electrocautery blade and measures the displacement of the blade as a result of resistance and drag acting on the blade. The electrosurgical pencil also includes a meter electrically connected to the strain gauge for monitoring either a change in voltage, a change in electrical current or a change in optical wavelength. The amount of blade displacement as measured by the strain gauge is available for display to the surgeon and/or as sensory input for a control circuit in the electrosurgical generator that modulates the generator output waveform. The electrosurgical pencil further includes a control circuit electrically coupled between the electrocautery blade and the electrosurgical generator. The control circuit is configured and adapted to control power supplied to electrocautery blade based on the displacement measured by the strain gauge. | 05-06-2010 |
20100114089 | ENDOMETRIAL ABLATION DEVICES AND SYSTEMS - Systems and methods for endometrial ablation. The systems include a handle and elongated introducer sleeve extending to an expandable working end having a fluid-tight interior chamber. A thin dielectric wall surrounds at least a portion of the interior chamber and has an external surface for contacting endometrial tissue. The thin dielectric wall surrounds a collapsible-expandable frame and receives an electrically non-conductive gas. First and second polarity electrodes are exposed to the interior and exterior of the chamber, respectively. A radiofrequency power source operatively connects to the electrode arrangement to apply a radiofrequency voltage across the first and second electrodes, wherein the voltage is sufficient to initiate ionization of the neutral gas into a conductive plasma within the interior chamber, and to capacitively couple the current in the plasma across the thin dielectric wall to ablate endometrial tissue engaged by the external surface of the dielectric structure. | 05-06-2010 |
20100114090 | ELECTROSURGICAL GENERATOR AND SYSTEM - An electrosurgical system has an electrosurgical generator with a multiple-phase RF output stage coupled to a multiple-electrode electrosurgical instrument. The instrument has three treatment electrodes each of which is coupled to a respective generator output driven from, for instance, a three-phase output transformer. Continuous RF output voltage waveforms are simultaneously delivered to respective generator outputs at the operating frequency, each waveform being phase-displaced with respect to the other waveforms. The magnitude of the RF output voltage waveform delivered to at least one of the generator outputs is sufficient to cause tissue vaporization at the respective treatment electrodes when the system is used for tissue treatment. Also disclosed is an electrosurgical generator in combination with an instrument having both bipolar coagulation electrodes and a remote return pad, the generator including means for varying the RF voltage outputs to vary the relative preponderance of bipolar and monopolar coagulation. | 05-06-2010 |
20100121318 | APPARATUS FOR TREATING TISSUE WITH MICROWAVE RADIATION AND ANTENNA CALIBRATION SYSTEM AND METHOD - A calibration method and apparatus for surgical antennas which are arranged to deliver microwave radiation (e.g. having a treatment frequency of 500 MHz to 100 GHz) into biological tissue is disclosed. An emitting region of the antenna is exposed to a plurality of calibration standards each having a different complex impedance at the treatment frequency. In one embodiment the calibration standards are created in a short-circuit-terminated waveguide cavity of variable length. In another embodiment, each calibration standard is a different mixture of two or more liquids. Measurement of the magnitude and phase of signals reflected from the emitting region when exposed to the calibration standard can permit calibration of the antenna, e.g. by generating a mapping function based on the measured values and known or reference values for the calibration standards. Also disclosed is tissue treatment apparatus having an ablation channel for conveying microwave radiation to a surgical antenna at a high power level and a separate measurement channel for conveying microwave radiation to a surgical antenna at a low power level, wherein the measurement channel bypasses noisy components on the ablation channel. A surgical antenna having an impedance transformer for matching an e.g. coaxial feed structure which terminates in one or more radiating elements with tissue to be treated is also disclosed. | 05-13-2010 |
20100121319 | METHODS AND DEVICES FOR APPLYING ENERGY TO BODILY TISSUES - Devices and methods are disclosed for treating tissue with microwave energy. Such devices and methods are able to treat cavities or surface tissue by creating one or more area or volumetric lesions. Also disclosed are flexible, low-profile devices that can be inserted non-invasively or minimally invasively near or into the target tissue as well as microwave antennas designed to generate ablation profiles that can ablate a large area or a large volume of target tissue in a single ablation. The devices include antennas wherein the field profile generated by an antenna is tailored and optimized for a particular clinical application. The antennas use unique properties of microwaves such as interaction of a microwave field with a metallic object and the use of additional shaping elements to shape the microwave field. | 05-13-2010 |
20100125269 | MICROWAVE TREATMENT DEVICES AND METHODS - The present invention discloses medical systems and methods adapted for the delivery of various medical components such as microwave antennas within or on a body for performing one or more medical procedures. Several embodiments herein disclose medical systems comprising a combination of one or more medical components and one or more elongate steerable or non-steerable arms that are adapted to mechanically manipulate the one or more medical components. Several embodiments of microwave antennas are disclosed that comprise an additional diagnostic or therapeutic modality located on or in the vicinity of the microwave antennas. | 05-20-2010 |
20100125270 | ABLATION PROBE HAVING A PLURALITY OF ARRAYS OF ELECTRODES - An ablation device includes a cannula having a lumen, a first array of electrodes deployable from within the lumen, and a second array of electrodes deployable from within the lumen, wherein the first array of electrodes has a configuration that is different from a configuration of the second array of electrodes. | 05-20-2010 |
20100130971 | Method of Fusing Biomaterials With Radiofrequency Energy - A method of fusing biomaterial and tissue using radiofrequency energy includes the steps of: providing a vessel sealing instrument having opposing jaw members which are movable relative to one another to compress tissue therebetween. The vessel sealing instrument includes at least one stop member affixed thereto for regulating the distance between the opposing jaw members. The method also includes the steps of: providing a biomaterial; positioning the biomaterial in abutting relation to tissue; approximating the biomaterial and tissue between the jaw members; compressing the biomaterial and tissue between the jaw members under a working pressure within the range of about 3 kg/cm | 05-27-2010 |
20100137854 | Electrosurgical generator and system - An electrosurgical system has an electrosurgical generator with a multiple-phase RF output stage coupled to a multiple-electrode electrosurgical instrument. The instrument has three treatment electrodes each of which is coupled to a respective generator output driven from, for instance, a three-phase output transformer. Continuous RF output voltage waveforms are simultaneously delivered to respective generator outputs at the operating frequency, each waveform being phase-displaced with respect to the other waveforms. The magnitude of the RF output voltage waveform delivered to at least one of the generator outputs is sufficient to cause tissue vaporisation at the respective treatment electrodes when the system is used for tissue treatment. Also disclosed is an electrosurgical generator in combination with a cutting forceps instrument, such that the coagulation and cutting of the tissue may be performed simultaneously. | 06-03-2010 |
20100137855 | APPLICATOR DEVICE FOR ABLATION BY RADIOFREQUENCY OF BIOLOGICAL TISSUES - An applicator device ( | 06-03-2010 |
20100137856 | ELECTROSURGICAL INSTRUMENT FOR TISSUE COAGULATION AND CUT - A monopolar electrosurgical instrument comprising a cylindrical metallic electrode which is connected to one pole of a radio frequency generator on one extreme; said electrode comprising a liquid supply for cooling, a handle | 06-03-2010 |
20100137857 | METHODS AND DEVICES FOR APPLYING ENERGY TO BODILY TISSUES - Devices and methods for treating tissue with microwave energy used in applications such as destroying a soft tissue by microwave ablation and/or creating point, line, area or volumetric lesions. Various embodiments of flexible, low-profile devices are also disclosed where such device can be inserted non-invasively or minimally invasively near or into the target tissue such as cardiac tissue. The devices disclosed herein comprise antennas wherein the field profile generated by an antenna is tailored and optimized for a particular clinical application. The antennas use unique properties of microwaves such as interaction of a microwave field with one or more conductive or non-conductive shaping elements to shape or redistribute the microwave field. | 06-03-2010 |
20100137858 | Coil Guide - A catheter including a coil guide that assist with the proper installation of an antenna for the delivery of microwave energy on a catheter. The coil guide secures the antenna in the proper position and shape while the catheter is navigated to the targeted tissue. The coil guide includes a channel that is molded or cut into the coil guide for receiving the antenna and maintaining proper position of the antenna. The channel provides a guide for medical personnel when wrapping the antenna coils onto the catheter body and secures the antenna in the proper shape and position while the catheter is being navigated to the targeted tissue. Alternatively, the antenna can be pre-coiled for installation into the channel. The coil guide can be adhesively attached or overmolded proximate a distal end of a catheter body. | 06-03-2010 |
20100145328 | ELECTROSURGICAL ABLATION APPARATUS AND A METHOD OF ABLATING BIOLOGICAL TISSUE - A portable electrosurgical system ( | 06-10-2010 |
20100145329 | Electrosurgical Device with Controllable Electric Field Profile - An electrosurgical device includes a plurality of electrodes arranged to form a tissue treatment surface and a power supply. The power supply is configured to deliver a first drive signal with a first phase to at least a first one of the plurality of electrodes and a second drive signal with a second phase to at least a second one of the plurality of electrodes such that an electric field extends from the tissue treatment surface, where the first phase and the second phase are different. The power supply is further configured to receive an input from an operator of the electrosurgical device, and adjust the first phase or the second phase such that an aspect of the electric field extending from the tissue treatment surface changes in response to the input from the operator. | 06-10-2010 |
20100145330 | SURGICAL DEVICES AND RELATED METHODS THEREOF - The present invention relates to surgical devices and related methods of use. In particular, the present invention relates to surgical devices used for contacting and treating deeply seated areas of the brain. | 06-10-2010 |
20100145331 | Loop Ablation Apparatus and Method - Embodiments of the invention provide an ablation apparatus for ablating target tissue adjacent pulmonary veins of a patient. The ablation apparatus can include a tube capable of being advanced around the pulmonary veins to form a loop. The tube can receive or include electrodes to ablate target tissue. Some embodiments provide a loop ablation device, which may include a cannula and two or more electrode rods carrying two or more bipolar electrodes. The electrode rods can be advanced through the distal ends toward the proximal ends of the loop and toward the target tissue. The bipolar electrodes can receive energy to ablate the target tissue. The bipolar electrodes may be surrounded by the liquid within the cannula while ablating the target tissue. The loop ablation device can further include a rotating grasping mechanism coupled to the electrode rods. | 06-10-2010 |
20100152724 | SYSTEMS AND METHODS FOR LIMITING JOINT TEMPERATURE - Joint temperature monitoring and control systems and methods are described herein in which the temperature of a fluid within a body or joint space is determined and/or monitored despite the energy generated during treatment by an ablation probe. One or more temperature sensors are positioned along the probe proximally of the electrode assembly and measure the temperature of an electrically conductive fluid without being overly influenced by the surgical effect occurring proximate the electrode assembly. The controller coupled to the probe can also be configured to set temperature limits and treatment times as well as moderating joint temperature by altering the electrically conductive fluid flow. | 06-17-2010 |
20100152725 | METHOD AND SYSTEM FOR TISSUE TREATMENT UTILIZING IRREVERSIBLE ELECTROPORATION AND THERMAL TRACK COAGULATION - A system for selectively ablating tissue is provided herein that has at least one energy source that has a non-thermal energy source and a thermal energy source, at least one probe, means for selectively coupling the probe to one desired energy source of the at least one energy source, means for selectively energizing the non-thermal energy source of the at least one energy source to apply non-thermal energy to at least a portion of the desired region to ablate at least a portion of the desired region, and means for selectively energizing the thermal energy source of the at least one energy source during the withdrawal of the at least one probe to thermally ablate tissue substantially adjacent to a probe track. | 06-17-2010 |
20100160906 | EXPANDABLE ENERGY DELIVERY DEVICES HAVING FLEXIBLE CONDUCTIVE ELEMENTS AND ASSOCIATED SYSTEMS AND METHODS - Devices, systems, and methods are disclosed for providing energy to tissue in an internal passageway. An energy delivery device for treating an airway in a patient in accordance with one embodiment of the disclosure can include an elongated support configured to be passed through a lumen of a scope and a compliant inflatable member attached to the elongated support. The inflatable member is configured to move between a collapsed configuration and an expanded configuration. The energy delivery device can also include a flexible conductive element carried by the inflatable member. The flexible conductive element extends along a path and is configured to expand and contract longitudinally relative to the path as the inflatable member moves between the expanded and collapsed configurations. | 06-24-2010 |
20100160907 | Thermokeratoplasty Systems - The present invention provides applicators for performing thermokeratoplasty. One embodiment of such applicators includes a pair of electrical conducting elements electrically separated by a selected distance and extending from a proximal end to a distal end. The electrical conducting elements define, at the distal end, a contact surface that is positionable at a cornea. At least one of the electrical conducting elements is divided into a plurality of discrete sections extending from the proximal end to the distal end. The discrete sections are selectively and separately actuated by a controller according to one or more variable characteristics to deliver energy to the cornea. | 06-24-2010 |
20100160908 | Hemostasis Device - A method and system for achieving hemostasis (the stoppage of bleeding) is described. RF (radio frequency) energy is used to ablate the surface of tissue to stop bleeding. The depth of destruction of the tissue can be controlled so as to desiccate and coagulate the tissue. In one implementation, an electrode carrier including bipolar electrodes is applied to the tissue, and RF energy transmitted through the bipolar electrodes to ablate the tissue. A layer of desiccated tissue can be created as well as coagulation of the tissue to achieve hemostasis. | 06-24-2010 |
20100168727 | Oesophageal treatment apparatus - A probe and associated apparatus for treating oesophageal tissue with microwave radiation (e.g. radiation having a frequency of 5-60 GHz) are disclosed. The probe comprises a flexible substrate that expands and retracts between an access configuration, e.g. suitable for insertion through an endoscope, and a treatment configuration in which radiating elements, e.g. conducting patches, monopole antennas, slots in a conducting strip or the like, are brought into close proximity with tissue to be treated. The radiating elements are arranged to emit a substantially uniform electromagnetic field with a suitable penetration depth into the tissue. The apparatus can monitor and control the power delivered from the probe into tissue. A method of hollow tube, e.g. oesophageal, pathological treatment and a device for opening and closing the probe are also disclosed. | 07-01-2010 |
20100168728 | IRRIGATED ABLATION CATHETER AND METHOD OF ASSEMBLY - An irrigated ablation catheter includes a tubular catheter body having an inner tubular member and an outer tubular member. The catheter body has a proximal portion and a distal portion. The catheter also includes an electrode extending from the distal portion of the catheter body, a flow distributor positioned at least partially within distal portion of the catheter body and at least partially overlapping the electrode, and a flow path extending through the catheter body and the flow distributor. The flow path is configured to provide cooling fluid to an external surface of the electrode. | 07-01-2010 |
20100168729 | IRRIGATED ABLATION ELECTRODE ASSEMBLY HAVING OFF-CENTER IRRIGATION PASSAGEWAY - An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis. | 07-01-2010 |
20100168730 | TISSUE CLASSIFYING APPARATUS - Tissue classifying apparatus in which forward microwave radiation (e.g. having a frequency 500 MHz to 60 GHz) is supplied from a source ( | 07-01-2010 |
20100168731 | APPARATUS, SYSTEMS, AND METHODS FOR ACHIEVING INTRAVASCULAR, THERMALLY-INDUCED RENAL NEUROMODULATION - Apparatus, systems, and methods for achieving thermally-induced renal neuromodulation by intravascular access are disclosed herein. One aspect of the present application, for example, is directed to apparatuses, systems, and methods that incorporate a treatment device comprising an elongated shaft. The elongated shaft is sized and configured to deliver a thermal element to a renal artery via an intravascular path. Thermally-induced renal neuromodulation may be achieved via direct and/or via indirect application of thermal energy to heat or cool neural fibers that contribute to renal function, or of vascular structures that feed or perfuse the neural fibers. | 07-01-2010 |
20100168732 | METHOD AND APPARATUS FOR MONITORING DISC PRESSURE DURING HEAT TREATMENT OF AN INTERVERTEBRAL DISC - A probe system and method for treating an intervertebral disc of a patient are disclosed. A probe has a cannula having an open end defined at a distal end and adapted to couple to a power source. A stylet fits into the cannula so that a distal end of the stylet occludes the open end at the distal end of the cannula. The probe system also includes a pressure monitoring apparatus coupled to the stylet, with the stylet including a pressure sensor in proximity to the distal end of the stylet. The pressure sensor communicates with the pressure monitoring apparatus to measure the pressure of the intervertebral disc. The power source delivers power to the distal end of the cannula, causing heating of the disc when the distal end of the cannula is disposed within the disc, thereby relieving patient pain associated with the disc. | 07-01-2010 |
20100168733 | TREATMENT OF TISSUE IN SPHINCTERS, SINUSES, AND ORIFICES - The invention comprises a method and apparatus for treatment of a body part. More particularly, a method and apparatus for heat treatment of tissue using a catheter inserted into a body part is described along with means for positioning the catheter and means for positioning a set of electrodes relative to a tissue sample for treatment. Still more particularly, radio frequency energy at about 400 to 500 kilohertz is used to provide heat for the tissue treatment. | 07-01-2010 |
20100168734 | ABLATION DEVICE WITH COMPRESSION BALLOON - A tissue ablation device includes an array of elongate electrodes configured to be deployed in tissue, wherein the deployed electrode array defines a tissue ablation region, an inflatable balloon configured to be deployed in tissue, and a coupler securing the balloon relative to the one or more elongate electrodes, wherein the balloon, when inflated, is configured to apply a force to tissue located in the tissue ablation region. An ablation device includes a first array of electrodes, a second array of electrodes, a first inflatable balloon, and a coupler securing the first balloon relative to the first and second electrode arrays. A method of ablating tissue includes positioning an array of elongate electrodes and an inflatable balloon proximate tissue to be ablated, inflating the balloon to compress a tissue region located between the balloon and the electrode array, and energizing the electrode array to ablate the tissue region. | 07-01-2010 |
20100174280 | CATHETER FOR PERCUTANEOUS TRANSCATHETER ABLATION OF CARDIAC ARRHYTHMIAS USING BIPOLAR RADIOFREQUENCY - A catheter that distributes bipolar radiofrequency for use during the percutaneous ablation of cardiac arrhythmias. The catheter comprising a flexible sheath, a handle, a pull-wire, holes for irrigation in its distal tip, sensing means and electrodes. | 07-08-2010 |
20100174281 | VESSEL SEALING DEVICES - A device for temporarily sealing an opening in a blood vessel is provided. The device comprises a cutting mechanism for creating an opening in a blood vessel and a seal for sealing the opening in the blood vessel. The seal is delivered through an inner lumen of a tool body coupled to the cutting mechanism. Methods for using the device to construct an anastomosis between two vessels are also provided. | 07-08-2010 |
20100174282 | APPARATUS FOR THERMAL MODULATION OF NERVES CONTRIBUTING TO RENAL FUNCTION - Methods and apparatus are provided for treatment of heart arrhythmia via renal neuromodulation. Such neuromodulation may effectuate irreversible electroporation or electrofusion, ablation, necrosis and/or inducement of apoptosis, alteration of gene expression, action potential attenuation or blockade, changes in cytokine up-regulation and other conditions in target neural fibers. In some embodiments, such neuromodulation is achieved through application of an electric field. In some embodiments, such neuromodulation is achieved through application of neuromodulatory agents, of thermal energy and/or of high intensity focused ultrasound. In some embodiments, such neuromodulation is performed in a bilateral fashion. | 07-08-2010 |
20100179529 | Energy Delivery Algorithm for Medical Devices - A method for controlling energy applied to tissue as a function of at least one detected tissue property includes the initial step of applying energy to tissue. The method also includes the steps of initially adjusting the energy applied to tissue and determining a direction of change of the at least one detected tissue property. The method also includes the steps of subsequently adjusting the energy applied to tissue in the same direction as the initially adjusting step if the at least one detected tissue property is changing in a first direction and in the opposite direction to the initially adjusting step if the at least one detected tissue property is changing in a second direction and further adjusting the energy applied to the tissue in the same direction as the initially adjusting step if the at least one detected tissue property is changing in the second direction and in the opposite direction to the initially adjusting step if the at least one detected tissue property is changing in the first direction. | 07-15-2010 |
20100179530 | ELECTRICAL ABLATION DEVICES - An electrical ablation apparatus comprises first and second electrodes. Each electrode comprises a first end configured to couple an energy source and a second end configured to couple to a tissue treatment region. An energy source is coupled to the first and second electrodes. The energy source is configured to deliver a first series of electrical pulses sufficient to induce cell necrosis by irreversible electroporation and a second series of electrical pulses sufficient to induce cell necrosis by thermal heating, through at least one of the first and second electrodes. The first series of electrical pulses is characterized by a first amplitude, a first pulse length, and a first frequency. The second series of electrical pulses is characterized by a second amplitude, a second pulse length, and a second frequency. | 07-15-2010 |
20100179531 | TISSUE TREATMENT APPARATUS AND SYSTEMS WITH PAIN MITIGATION AND METHODS FOR MITIGATING PAIN DURING TISSUE TREATMENTS - Methods, apparatus, and systems for delivering electromagnetic energy to a patient's tissue with a reduction in the pain experienced by the patient. Electromagnetic energy is delivered from a treatment electrode through the skin surface to the tissue at a plurality of power levels over a treatment time. During the energy delivery, a portion of the treatment electrode is in a contacting relationship with the skin surface. A dielectric member may be disposed between the treatment electrode and the skin surface when the electromagnetic energy is delivered. | 07-15-2010 |
20100179532 | Electrosurgical System Employing Multiple Electrodes - A system for heat ablation of tissue in which energy is sequentially applied to at least two electrodes inserted into tissue, the system comprising a radiofrequency source configured to supply radiofrequency energy to two or more electrodes, at least one return electrode for returning the RF energy to the RF source, and a controller configured to sequentially apply the RF energy to each of the two or more electrodes for a predetermined period of time. The controller includes a determiner configured to determine an off time for a next electrode in a sequence and a comparator configured to compare the off time for the next electrode in the sequence to a predetermined minimum off time. The controller applies the radiofrequency energy to the next electrode in the sequence when the off time is greater than the predetermined minimum off time. | 07-15-2010 |
20100185191 | METHOD AND APPARATUS FOR ALIGNING AN ABLATION CATHETER AND A TEMPERATURE PROBE DURING AN ABLATION PROCEDURE - Apparatus for aligning an ablation catheter and a temperature probe relatively for an ablation procedure includes an ablation catheter with a first antenna for ablating tissue at an ablation site in a patient's body and a temperature probe for placement in a body passage having a wall portion adjacent to the ablation site so that a second antenna in the probe is positioned opposite the first antenna. A microwave source provides a pulse modulated microwave signal to one of the antennas and a radiometer is in circuit with the other antenna. A synchronizing device in circuit with the microwave source and the radiometer enables the radiometer to synchronously detect the microwave signal so that the radiometer provides an alignment signal whose strength reflects the degree of alignment of the first and second antennas which signal may be used to control an alignment display. An alignment method using the apparatus is also disclosed. | 07-22-2010 |
20100185192 | EYE THERAPY SYSTEM - Systems and methods improve operation of an applicator that delivers heat-generating energy to an eye as a part of an eye therapy. For example, reflected power may be measured to determine whether sufficient contact has been established between the applicator and the eye for accurate and precise delivery of energy to the eye. In addition, at least one of forward and reflected power may be measured to monitor the application of coolant pulses that control the generation of heat in the eye when the applicator delivers energy to the eye. Further, the forward and reflected power may be measured to determine an efficiency of energy transfer or an impedance mismatch. Based on the efficiency of energy transfer or the impedance mismatch, an adjustable parameter of a tuning element may be modified. | 07-22-2010 |
20100185193 | METHOD AND SYSTEM FOR INVASIVE SKIN TREATMENT - A system and method for simultaneously heating a plurality of discrete skin volumes to a coagulation temperature. The system comprises an applicator containing an electrode having a plurality of spaced apart protruding conducting elements configured to contact the skin surface at a plurality of discrete locations. A controller applies a voltage to the electrode so as to simultaneously heat a plurality of skin volumes to a coagulation temperature when the applicator is applied to the skin surface. | 07-22-2010 |
20100185194 | METHOD AND SYSTEM FOR INVASIVE SKIN TREATMENT - A system and method for simultaneously heating a plurality of discrete skin volumes to a coagulation temperature. The system comprises an applicator containing an electrode having a plurality of spaced apart protruding conducting elements configured to contact the skin surface at a plurality of discrete locations. A controller applies a voltage to the electrode so as to simultaneously heat a plurality of skin volumes to a coagulation temperature when the applicator is applied to the skin surface. | 07-22-2010 |
20100191232 | CATHETERS AND METHODS FOR PERFORMING ELECTROPHYSIOLOGICAL INTERVENTIONS - An electrophysiological ablation catheter comprises a flexible shaft having a circumferential tissue ablation structure and a linear tissue ablation structure at its distal end. By positioning the circumferential tissue ablation structure in a pulmonary vein ostium and the linear tissue ablation structure extending radially from the pulmonary vein ostium toward a second pulmonary vein ostium, lesions around and between the ostium may be formed with a single catheter placement. Repositioning the catheter allows the remaining pulmonary vein ostia and tissue therebetween to be ablated in order to treat atrial fibrillation. | 07-29-2010 |
20100191233 | Method and System for Programming and Controlling an Electrosurgical Generator System - A method and system are disclosed enabling configuration of a control system for an electrosurgical generator system for creating new surgical applications without changing the underlying software system. The programmable electrosurgical generator system has an RF output stage for outputting at least one RF operating waveform for performing an electrosurgical procedure. The programmable electrosurgical generator system includes an inner loop system to change at least one parameter of the at least one RF operating waveform; an outer loop system to provide at least one operating command to the inner loop system; and a configuration control system that modifies at least one of the inner and outer loop systems based on received data from a sensor module. | 07-29-2010 |
20100198212 | PULSED RADIOFREQUENCY FOR INTRA-ARTICULAR THERAPY OF PAIN - The invention provides for a method of treating pain in a joint of a subject with pulsed radiofrequency. To enable such a treatment a specific electrode is provided comprising a completely insulated outer needle with a sharp tip, a removable stylet, and one or more conductive, blunt ended, optionally flexible electrodes, optionally with an insulated tip. | 08-05-2010 |
20100198213 | CIRCUIT FOR RADIOFREQUENCY DEVICES APPLICABLE TO LIVING TISSUES AND DEVICE CONTAINING SAME - The supply circuit for the electrodes comprises a series resonant filter and a parallel resonant filter, synthonised to admit the fundamental signal of the input signal and simultaneously and exponentially attenuate the remaining harmonics by increasing the frequency thereof, in such a way that the input signal with harmonics only passes the fundamental signal without attenuation to the output, while the harmonics causing interferences are increasingly attenuated as their frequency is raised. | 08-05-2010 |
20100198214 | CERVICAL OPENING SEALING DEVICES - A device for sealing a cervical opening includes a support structure, and a seal coupled to the support structure, the seal having a surface for abutting against tissue next to the cervical opening, wherein the seal is tiltable relative to the support structure. A device for sealing a cervical opening includes a support structure, and a member coupled to the support structure, wherein the member is inflatable to create a seal for abutting against cervical tissue. A device for sealing a cervical opening includes a seal having a surface for contacting tissue next to the cervical opening, an opening formed on the surface of the seal, and a vacuum port, wherein the opening is in fluid communication with the vacuum port. | 08-05-2010 |
20100198215 | IN VIVO ACCESSORIES FOR MINIMALLY INVASIVE ROBOTIC SURGERY - Surgical accessories are presented in vivo and used by surgical tools in the surgical site to perform additional tasks without the need to remove the tools from the surgical site for tool change or instrument loading. Examples of in vivo accessories include fastening accessories such as surgical clips for use with a clip applier, single working member accessories such as a blade which can be grasped and manipulated by a grasping tool for cutting, sheath accessories that fit over working members of a tool, flow tubes for providing suction or introducing a fluid into the surgical site, and a retraction member resiliently biased to retract a tissue to expose an area in the surgical site for treatment. The accessories can be introduced into the surgical site by a dedicated accessory introducer, or can be supported on the body of a surgical tool inserted into the surgical site and be manipulated using another surgical tool in the surgical site. The accessory introducer can be resiliently biased to bias the accessories toward a predetermined position in the surgical site. | 08-05-2010 |
20100211059 | SYSTEMS AND METHODS FOR CREATING AN EFFECT USING MICROWAVE ENERGY TO SPECIFIED TISSUE - Systems, methods and devices for creating an effect using microwave energy to specified tissue are disclosed herein. A system for the application of microwave energy to a tissue can include, in some embodiments, a signal generator adapted to generate a microwave signal having predetermined characteristics, an applicator connected to the generator and adapted to apply microwave energy to tissue, the applicator comprising one or more microwave antennas and a tissue interface, a vacuum source connected to the tissue interface, a cooling source connected to said tissue interface, and a controller adapted to control the signal generator, the vacuum source, and the coolant source. The tissue may include a first layer and a second layer, the second layer below the first layer, and the controller is configured such that the system delivers energy such that a peak power loss density profile is created in the second layer. | 08-19-2010 |
20100211060 | RADIO FREQUENCY TREATMENT OF SUBCUTANEOUS FAT - A method for treating subcutaneous fat with RF energy is disclosed. The method includes determining a thickness of a layer of fat of a portion of tissue to be treated. Based on the determined thickness, an RF frequency is selected. In particular, lower frequencies are used for thicker layers of fat while higher frequencies are used for thinner layers of fat. RF heating is applied to the portion of the tissue by applying RF energy at the selected RF frequency. | 08-19-2010 |
20100217251 | Leaky-Wave Antennas for Medical Applications - A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform. | 08-26-2010 |
20100217252 | Leaky-Wave Antennas for Medical Applications - A device for directing energy to a target volume of tissue includes a proximal portion including a first antenna subassembly extending therethrough, and a distal portion including a second antenna subassembly. The first antenna subassembly includes a leaky-wave antenna assembly having an outer conductor and an inner conductor disposed within the outer conductor. The distal portion of the device is attached to the inner conductor. The outer conductor includes a plurality of radiating apertures defined in a distal portion thereof and is configured for radiating energy substantially uniformly along a longitudinal axis of the proximal portion. | 08-26-2010 |
20100217253 | DEVICES AND METHODS FOR PERCUTANEOUS ENERGY DELIVERY - The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect. | 08-26-2010 |
20100217254 | METHODS FOR APPLYING ENERGY TO TISSUE USING ISOLATED ENERGY SOURCES - The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect. | 08-26-2010 |
20100217255 | Fluid-Assisted Electrosurgical Device and Methods of Use Thereof - The invention provides an electrosurgical device and methods of use thereof. The device comprises a first electrode, a second electrode and at least one fluid outlet. In one embodiment, the first electrode has a distal portion with an electrically conductive spherical surface, the second electrode has a distal portion with an electrically conductive spherical surface, and at least one of the first electrode and the second electrode have a blade portion. | 08-26-2010 |
20100217256 | Radio-Frequency Generator for Powering an Ablation Device - An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated. | 08-26-2010 |
20100222774 | Systems, devices, and methods for inducing ultraviolet energy generation via hemozoin nanoparticles in a biological tissue - Systems, devices, and methods are described for providing a monitor/treatment device configured to, for example, detect hemozoin, as well as to monitor or treat a malarial infection. | 09-02-2010 |
20100222775 | Systems, devices, and methods including paramagnetic oscillation, rotation and translation of hemozoin asymmetric nanoparticles in response to multi-harmonic optical detection of the presence of hemozoin - Systems, devices, and methods are described for providing a monitor/treatment device configured to, for example, detect hemozoin, as well as to monitor or treat a malarial infection. | 09-02-2010 |
20100222776 | MONITORING SYSTEM - A heating and monitoring system is described having a focused antenna to monitor temperature of internal tissue and or bodily fluids in a non-invasive way. The focused antenna is shielded to form and relatively small and manageable package that can be placed to monitor internal tissue and/or bodily fluids. | 09-02-2010 |
20100228242 | ANTI-SEEDING ARRANGEMENT - The present invention relates to an anti-seeding arrangement ( | 09-09-2010 |
20100228243 | DEVICES AND METHODS FOR PERCUTANEOUS ENERGY DELIVERY - The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect. | 09-09-2010 |
20100228244 | TISSUE MEASUREMENT AND ABLATION ANTENNA - A surgical antenna for radiating microwave energy (e.g. frequency 500 MHz to 60 GHz) from a e.g. ceramic insertion tip ( | 09-09-2010 |
20100228245 | Method and System for Transcervical Tubal Occlusion - A medical device and procedure is described for occluding a fallopian tube. A tubal occlusion device is inserted into a uterine cavity. The device includes an RF applicator head including an electrode carrier with one or more bipolar electrodes thereon. During insertion, the RF applicator head can be in a closed position. The RF applicator head is positioned at a tubal ostium of a fallopian tube, such that a distal tip of the RF applicator head advances into the tubal ostium. The RF applicator head is deployed into an open position such that the RF applicator head approximates the shape of the uterine cavity in a region of the tubal ostium. Current is passed through the one or more bipolar electrodes to the tubal ostium to destroy tissue to a known depth, which precipitates a healing response in surrounding tissue that over time scars and occludes the fallopian tube. | 09-09-2010 |
20100234839 | Cooled Dielectrically Buffered Microwave Dipole Antenna - Microwave antenna assemblies incorporating a resilient insulating coupler are described herein. The microwave antenna includes a radiating portion connected by a coaxial feedline to a power generating source, e.g., a generator. Distal and proximal radiating portions of the antenna, which correspond to inner and outer conductors provided by the coaxial feedline, are separated by the resilient insulating coupler. The described coupler includes a proximal threaded portion, and an overmolded insulating portion formed from an elastomeric material. The inner conductor of the coaxial feedline is joined to the threaded portion of the coupler, and is placed under tension to draw together the distal radiating portion, the coupler, and the proximal radiating portion into a single rigid assembly. In use, the resilient coupler provides increased strength and reliability by absorbing mechanical stresses typically encountered during microwave ablation procedures. | 09-16-2010 |
20100241115 | Method and system for varying output intensity of energy applied to an electrosurgical probe - An electrosurgical system is capable of selectively varying the power applied to an electrosurgical probe, without interruption or discontinuity, in a variable mode or providing a constant coagulation power value to the probe. In a fixed mode, power to the electrosurgical probe must be discontinued to change the power level output by the probe. A single controller is capable of operating the probe in the variable mode and the fixed mode. The controller includes an actuator for stopping the cutting operation and then switching to a constant coagulation output during either of the variable mode or the fixed mode. The controller of the system may selectively control a separate surgical tool. | 09-23-2010 |
20100241116 | Method and system for adjusting source impedance and maximizing output by RF generator - An electrosurgical system includes an electrosurgical probe connected to a control console, wherein the probe is capable of coagulating and ablating tissue depending on a selected operating mode. Before operating the system, probe-specific data stored in a memory device associated with the probe is read by a processing device in the console. The data includes source impedance values specific to a coagulation or cutting mode of operation. A constant duty cycle value for a modulated cutting mode also is provided. Depending on the operating mode selected, an RF generator adjusted to have a predetermined source impedance value provides a voltage value to the probe. During the duty-cycled mode, the RF generator generates an instantaneous voltage value output for a duty cycle portion that is less than 100% of a time period, which value is no less than a maximum continuous average voltage value for the electrosurgical probe. | 09-23-2010 |
20100249769 | Apparatus for Tissue Sealing - The present disclosure provides for a microwave forceps for sealing tissue. The forceps includes a shaft member having an end effector assembly disposed at a distal end thereof. The end effector assembly includes opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a sealing surface, wherein one of the sealing surfaces includes one or more microwave antennas coupled to a source of microwave energy. | 09-30-2010 |
20100249770 | ELECTROMAGNETIC THERMOTHERAPEUTIC APPARATUS AND SYSTEM - An electromagnetic thermotherapeutic system is adapted to treat a biological tissue and includes an electromagnetic thermotherapeutic apparatus and a high frequency induction heating circuit unit. The apparatus includes a needle assembly and a temperature monitor. | 09-30-2010 |
20100262134 | Frequency Identification for Microwave Ablation Probes - A microwave ablation system is disclosed. The system includes a microwave antenna assembly that includes an identification device configured to store an optimal frequency of the microwave antenna assembly. The system also includes a generator configured to couple to the microwave antenna assembly and to output microwave energy at an operational frequency. The generator is further configured to read the optimal frequency from the identification device and to configure the operational frequency to substantially match the optimal frequency. | 10-14-2010 |
20100262135 | CONTROLLED DELIVERY OF THERAPEUTIC ENERGY TO TISSUE - The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes in a data driven system so that the previously compiled energy delivery profiles control the treatment. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect. | 10-14-2010 |
20100262136 | Interfacing Media Manipulation with Non-Ablation Radiofrequency Energy System and Method - The effects produced by surgical devices that deploy an electrical circuit between electrodes are dependent on the nature of electrical work perform upon the conductive media in an around biologic tissues. Non-ablation radiofrequency surgical devices utilize a protective housing that provides, based upon procedure-specific needs, the ability to 1. move, manipulate, and segregate near-field effects both tangentially and perpendicularly to the tissue surface, 2. deliver far-field electromagnetic effects to tissue unencumbered by current deposition, and 3. serve as a 20 mechanical adjunct to and a selective throttling vent/plenum for energy delivery. Because the electrodes are non-tissue-contacting, this study characterizes the effects that non-ablation radiofrequency energy exerts upon interfacing media typically encountered during surgical applications. These devices create a Repetitive Molecular Energy Conversion Loop for surgical work; and, non-ionizing electromagnetic forces are deployed in strength levels that can produce thermal and non-thermal biologic tissue effects. A differential between current density dispersion and electromagnetic field strength is exploited to allow normal tissue healing responses to the near-field effects of tissue modification and preconditioning while permitting far-field effects, which are useful for inducing therapeutic biologic responses, to manifest in treated tissues that have been protected from electrical current generated collateral damage. | 10-14-2010 |
20100262137 | COOLED ANTENNA FOR DEVICE INSERTABLE INTO A BODY - A device for treating tissue, via a cooled antenna, within a body is described. | 10-14-2010 |
20100262138 | METHODS OF COAGULATING TISSUE - An embodiment of the invention includes a surgical device for coagulating soft tissue such as atrial tissue in the treatment of atrial fibrillation, atrial flutter, and atrial tachycardia; tendon or ligament shrinkage; or articular cartilage removal. The surgical device integrates a suction mechanism with the coagulation mechanism improving the lesion creation capabilities of the device. The surgical device comprises an elongate member having an insulative covering attached about conductive elements capable of coagulating soft tissue when radiofrequency or direct current energy is transmitted to the conductive elements. Openings through the insulative covering expose regions of the conductive elements and are coupled to lumens in the elongate member which are routed to a vacuum source. Suction causes the soft tissue to actively engage the opening thus the integrated, exposed conductive elements to facilitate the coagulation process and ensure the lesions created are consistent, continuous, and transmural. The embodiments of the invention can also incorporate cooling mechanisms associated with the conductive elements and coupled to a fluid source to passively transport fluid along the contacted soft tissue surface to cool thus pushing the maximum temperature deeper into tissue. | 10-14-2010 |
20100268217 | VESSEL SEALING DEVICE AND METHODS - A device is provided that is suitable for percutaneous insertion into a hollow vessel, such as a blood vessel, within the body of a patient for purpose of causing endoluminal closure of the vessel at a specified therapeutic site in the body of a patient. The device suitably is in the form of a catheter that is slidably mounted on a guidewire. The catheter may comprise one or more heating modules, as well as one or more extendable structures located on the device and optionally on the associated guidewire, that lead thermal ablation of the vessel walls and subsequent collapse of the vessel. The catheter can function alone or in cooperation with an associated guidewire to induce sealing of the vessel. Methods of using the catheter to treat lesions such as tumours or hemorrhages are also described. | 10-21-2010 |
20100268218 | Electrically Tunable Tissue Ablation system and Method - An ablation system which transmits radio frequency (RF) energy for the ablation of biological tissues has a transmission line and an RF antenna disposed at the distal portion of the transmission line. An RF signal generator supplies RF energy to the proximal end of the cable for transmission to the antenna, and an electrically tunable transformer is connected between the signal generator and the antenna. The transformer is tuned based on detection of the reflected power level from the antenna so as to reduce or minimize reflected power, thereby increasing RF energy coupling between the antenna and tissue. | 10-21-2010 |
20100268219 | RADIO FREQUENCY BASED ABLATION SYSTEM AND METHOD WITH DIELECTRIC TRANSFORMER - An ablation device which transmits radio frequency (RF) energy for the ablation of biological tissues has elongate inner and outer coaxial conductors extending from a proximal portion to a distal portion. An RF antenna is disposed at the distal portion of the device and transmits RF energy for ablation of a tissue region to be treated. Reflection of energy from the tissue or the ablation point is reduced by providing multiple layers of dielectric media about the antenna, or by providing a gradual transition point from the conductors to the antenna tip, by means of a longitudinally stepped dielectric layer transformer. | 10-21-2010 |
20100268220 | Systems, Apparatus, Methods and Procedures for the Noninvasive Treatment of Tissue Using Microwave Energy - The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using microwave energy. | 10-21-2010 |
20100274238 | METHOD AND APPARATUS FOR RADIOFREQUENCY ABLATION WITH INCREASED DEPTH AND/OR DECREASED VOLUME OF ABLATED TISSUE - A method of ablating a tissue site includes at least two stages. A first stage involves conducting bipolar ablation between a first pair of electrodes situated in an opposing arrangement on opposing sides of the tissue site to form a pair of opposing first stage ablation regions extending from respective sides of the tissue towards the center. A second stage involves conducting bipolar ablation between a second pair of electrodes situated in a diametrical arrangement with respect to the first stage ablation regions, which forms a second stage ablation region intermediate the pair of first stage ablation regions. The second stage completes the ablation through the entire depth of the tissue site. Since the overall process can accommodate incomplete ablation during the first stage, lower power, reduced ablation times or both may be used during the first stage, avoiding overheating and with a decrease in ablated tissue volume. | 10-28-2010 |
20100274239 | Device and Method for Real-Time Lesion Estimation During Ablation - Disclosed herein are ablation systems and methods for providing feedback on lesion formation in real-time. The methods and systems assess absorptivity of tissue based on a degree of electric coupling or contact between an ablation electrode and the tissue. The absorptivity can then be used, along with other information, including, power levels and activation times, to provide real-time feedback on the lesions being created. Feedback may be provided, for example, in the form of estimated lesion volumes and other lesion characteristics. The methods and systems can provide estimated treatment times to achieve a desired lesion characteristic for a given degree of contact, as well as depth of a lesion being created. The degree of contact may be measured using different techniques, including the phase angle techniques and a coupling index. | 10-28-2010 |
20100274240 | Electromagnetic device and method - Embodiments include an apparatus, a medical device, a method and a system. The medical device includes an ellipsoidally shaped reflector having a first focus and a second focus. The ellipsoidally shaped reflector also provides a translational coupling of electromagnetic energy from the first focus to the second focus. The medical device also includes a controllable electromagnetic energy source aligned to emit a non-biologically emitted electromagnetic energy in a proximity to the first focus. | 10-28-2010 |
20100274241 | SURFACE ELECTRODE MULTIPLE MODE OPERATION - A surface electrode for ablating tissue is provided. The surface electrode comprises a base, a plurality of tissue penetrating needle electrodes extending from the surface of the base an adjustable distance, and an electrical interface coupled to the plurality of needle electrodes. The adjustability of the needle electrodes allows the depth that the needle electrodes penetrate through tissue to be adjusted. | 10-28-2010 |
20100280508 | Method and Apparatus for RF Anastomosis - RF electrocautery is used to create an anastomosis between vessels or organs, such as the bowel. In an embodiment, tissues are fused together to create a seal between two or more tissue surfaces, for example in a side-to-side bowel anastomosis. | 11-04-2010 |
20100280509 | Eye Therapy System - An electrical energy applicator directs electrical energy from the electrical energy source to a distal end, which positionable at a surface of an eye. The energy conducting applicator includes a first conductor and a second conductor separated by a gap. The first conductor has a first contact surface at the distal end, and the second conductor has a second contact surface at the distal end. The first conductor and/or the second conductor has a length that is adjustable by a biasing element. The first contact surface of the first conductor is movable relative to the second contact surface of the second conductor. The first contact surface and the second contact surface are adjustably positionable simultaneously against the surface of the eye to deliver energy to the eye according to a pattern defined by the first contact surface, the second contact surface, and the gap. | 11-04-2010 |
20100280510 | Method for Operating a Selective Stiffening Catheter - A method for delivering RF energy to living tissue includes the steps of extending a guidewire to a tissue treatment site in a body. A controllable stiffness catheter is provided with a stiffness device having non-metallic properties and a temperature-changing device. The stiffness device is in a stiff state below a given temperature and in a soft state above the given temperature. While supplying power to the temperature-changing device, the catheter is threaded along the guidewire up to the treatment site in the soft state. Power is removed from the temperature-changing device to alter the non-metallic properties of the stiffness device and directly result in a change of the stiffness device to the stiff state without straightening the catheter. The RF energy supply device is physically contacted with the treatment site and RF energy is delivered to the treatment site from the RF energy supply device. | 11-04-2010 |
20100286681 | Power-Stage Antenna Integrated System - Disclosed is a system for generating and delivery electrosurgical energy, the system including a microwave generator and a power-stage device. The microwave generator further including a microwave signal generator configured to generate a microwave frequency signal at a first power level and a DC power supply configured to generate a DC power signal. The power-stage device connects to the microwave signal generator by a transmission line and is configured to receive the microwave frequency signal and the DC power signal from the transmission line. The power-stage device further including a power-stage microwave signal amplifier configured to amplify the microwave frequency signal from the first power level to at least one second power level and a microwave antenna configured to transmit the microwave frequency signal. | 11-11-2010 |
20100286682 | Power-Stage Antenna Integrated System with Junction Member - Disclosed is a microwave antenna assembly for applying microwave energy. The assembly includes a proximal portion having an inner conductor, an outer conductor, a DC power and a DC neutral each extending therethrough the antenna has a distal radiating section and a proximal radiating section and a junction member. The junction member includes a longitudinal thickness and is disposed between the proximal radiating section and the distal radiating section. The junction member further includes a microwave signal amplifier configured to receive a microwave signal at a first power level from the inner and outer conductor and a DC power signal from the DC power and DC neutral. The microwave signal amplifier amplifies the microwave signal from a first power level to a second power level greater than the first power level. | 11-11-2010 |
20100286683 | Power-Stage Antenna Integrated System with High-Strength Shaft - Disclosed is a microwave antenna assembly that includes proximal and distal radiating sections and a junction member. The proximal radiating section includes inner and outer conductors and DC power and neutral conductors. The inner conductor is disposed within the outer conductor and the DC power and neutral conductors are disposed radially outward therefrom. The junction member mates the distal and proximal radiating sections such that the distal and proximal radiating sections are positioned relative to one another. The junction member further includes a microwave signal amplifier (MSA) that receives a signal at a first energy level from the inner and outer conductors and a DC power signal from the DC power and neutral conductors. The MSA amplifies the signal from the first energy level to an additional, greater energy level. The junction member provides the microwave signal at the additional energy level to the proximal and distal radiating sections. | 11-11-2010 |
20100286684 | IRRIGATED ABLATION CATHETER WITH MULTIPLE SEGMENTED ABLATION ELECTRODES - In one embodiment, an irrigated catheter ablation apparatus comprises an elongated body having a distal end, a proximal end, and at least one fluid lumen extending longitudinally therein; and a plurality of segmented ablation electrodes on a distal portion of the elongated body. The electrodes are spaced from the proximal end and from the distal end of the elongated body by electrically nonconductive segments. The electrodes are spaced from each other longitudinally by electrically nonconductive segments. For each electrode that is longitudinally disposed next to one of the nonconductive segments, an edge is formed between an electrode end of the electrode and a nonconductive segment end of the nonconductive segment. A plurality of elution holes are disposed adjacent to the edges. A plurality of ducts establish fluid communication between the elution holes and the fluid lumen. | 11-11-2010 |
20100286685 | Electrosurgical generator - An electrosurgical generator for coagulating tissue comprises a source of radio frequency (RF) energy, and at least a pair of output terminals for connection to a bipolar electrosurgical instrument adapted to contact tissue, the output terminals delivering RF energy from the source to the instrument such that the source delivers RF energy into tissue. The generator also includes boiling detection means for determining when the RF energy starts to cause the boiling of electrolytes within the tissue. A timer is adapted to determine when a predetermined period of time has elapsed since the boiling detection means has indicated the start of the boiling of electrolytes. An indication means gives an indication when the predetermined period of time has elapsed. | 11-11-2010 |
20100286686 | SURGICAL RESECTION APPARATUS - Surgical cutting apparatus having a treatment channel and a measurement channel for conveying microwave energy from a source to an antenna at a cutting edge. The measurement channel operates at lower power than the treatment channel for determining when higher energy can be safely applied. The apparatus may deliver microwave radiation at differing frequencies to one or more antennas at the cutting edge, e.g. to provide different treatment effects. The source may generate an output for an antenna whose frequency can be selected e.g. for most efficient operation. Selection may be automatic based on detected magnitude and phase of reflected signals during a frequency sweep of a forward signal. Power delivered to tissue via the cutting element may be manually boosted to deal with large blood vessels. The apparatus may include a reflected power monitor for recognising behaviour in reflected signals received from the antenna to trigger automatic pre-emptive action. | 11-11-2010 |
20100286687 | Dual Energy Therapy Needle - A therapy needle is provided that may include any of a number of features. One feature of the therapy needle is that it can apply microwave energy to tissue to produce a coagulative spherical volumetric ablation of the tissue. In some embodiments, the volumetric ablation can have a diameter ranging from 1 cm to 4 cm and can be formed in less than 3 minutes. Another feature of the therapy needle is that it can utilize an electric cutting device on a distal portion of the needle to cut a hole in high density tissue. Methods associated with use of the therapy needle are also covered. | 11-11-2010 |
20100286688 | FLEXIBLE ABLATION CLAMP - Ablation devices comprising elongated flexible members that are repositioned to at least partially surround tissue to be ablated. The exemplary ablation instruments utilize rigid or semi-rigid devices that are either affixed to the flexible member or repositionable along the flexible member. The clamping and ablating surfaces include electrodes or other means for delivering ablation energy. The electrodes may be brought into proximity with each other so as to provide a uniform force profile across the tissue to be ablated. In such a circumstance, once the tissue between the clamping and ablating surfaces is compressed, the electrodes are activated to create an ablation lesion. | 11-11-2010 |
20100292684 | TISSUE MODIFICATION DEVICES AND METHODS OF THE SAME - Tissue modification devices are provided. Aspects of the devices include an elongated member having a proximal end and a distal end, an tissue modifier positioned at the distal end, and a linear mechanical actuator configured to linearly translate the RF electrode relative the distal end according to a linear translation waveform. The devices may be configured to operate the tissue modifier according to an operating waveform that is synchronized with the linear translation waveform. Also provided are methods of modifying an internal target tissue of a subject using the tissue modification devices. | 11-18-2010 |
20100292685 | RECANALIZING OCCLUDED VESSELS USING RADIOFREQUENCY ENERGY - A method and systems for treating chronic total occlusions (CTOs), particularly those that are difficult to treat. CTO recanalization is achieved using radiofrequency ablation directed at the occlusion between antegrade and retrograde guidewires placed on either side of the occlusion. | 11-18-2010 |
20100292686 | Cool-Tip Combined Electrode Introducer - The present disclosure relates to systems, devices and methods for positioning and placing multiple electrodes in a target surgical site. An introducer is provided for facilitating the insertion of a cluster of electrodes into the body of a patient for performing tissue ablation. The introducer includes a body portion including a plurality of holes formed therein for selectively receiving a respective elongated shaft of the electrodes therethrough, wherein the holes of the introducer orient and space each electrode relative to one another, wherein the introducer includes a centrally disposed hole formed therein for receiving a guide needle therethrough. | 11-18-2010 |
20100298821 | DEVICE AND METHOD FOR THE THERMAL ABLATION OF TUMORS BY MEANS OF HIGH-FREQUENCY ELECTROMAGNETIC ENERGY UNDER OVERPRESSURE CONDITIONS - A device for the TA by means of high frequency comprising a thin hollow element ( | 11-25-2010 |
20100298822 | Tissue Impedance Measurement Using a Secondary Frequency - An microwave ablation system includes a generator including a first energy source, a second energy source and a diplexer, the diplexer multiplexes a first energy from the first energy source and a second energy from the second energy source. The system also includes a cable including a center conductor and an outer sheath where the multiplexed energy is transmitted through the center conductor. In addition an antenna is provided that is operable to receive the multiplexed energy from the center conductor and to deliver the multiplexed energy to a region of tissue. The outer sheath acts as a return path of the second energy to the second energy source. A sensor is also provided that measures at least one parameter of the second energy generated by the second energy source and the second energy returned from the region of tissue. | 11-25-2010 |
20100305559 | Narrow Gauge High Strength Choked Wet Tip Microwave Ablation Antenna - An electromagnetic surgical ablation probe having a coaxial feedline and cooling chamber is disclosed. The disclosed probe includes a dipole antenna arrangement having a radiating section, a distal tip coupled to a distal end of the radiating section, and a ring-like balun short) or choke, which may control a radiation pattern of the probe. A conductive tube disposed coaxially around the balun short includes at least one fluid conduit which provides coolant, such as dionized water, to a cooling chamber defined within the probe. A radiofrequency transparent catheter forms an outer surface of the probe and may include a lubricious coating. | 12-02-2010 |
20100305560 | Microwave Ablation Safety Pad, Microwave Safety Pad System and Method of Use - A microwave ablation safety pad includes a base layer, an electromagnetic shielding layer and a physical protection layer. The base layer is configured to support a cooling medium designed to absorb thermal energy. The electromagnetic shielding layer, adjacent the base layer, includes a faraday shield configured to prevent the generation of electromagnetic fields. The physical protection layer, adjacent the electromagnetic shielding layer, is configured to resist penetration therethrough. | 12-02-2010 |
20100305561 | Electrosurgical Devices with Directional Radiation Pattern - A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding the chamber. An antenna assembly is disposed in the chamber. The elongated body member also includes an opening in the body wall to allow energy radiated from the antenna assembly to transfer into the target volume of tissue. | 12-02-2010 |
20100305562 | Ablation Device With Cooled Electrodes And Methods of Use - An electrosurgical end effector for ablating tissue is provided that comprises at least one electrically-conductive ablation member adapted to be connected to a source of RF energy, with the ablation member having a tissue engaging surface and an internal fluid passageway. Preferably, the end effector includes two electrically conductive ablation members that are electrically isolated from one another. | 12-02-2010 |
20100312233 | Radio-frequency treatment of skin tissue with shock-free handpiece - RF energy for skin conditioning with a non-ablative electrode is applied with a handpiece incorporating means to prevent electrical shock to the patient when the energized electrode surface makes or breaks contact with the skin. In a preferred embodiment, switch means are incorporated in the handpiece and configured such that the active electrode surface is not energized until it is in actual contact with the patient's skin, and remains energized only while the active electrode surface remains in contact with the patient's skin, so that no voltage is present on the electrode, when an air gap whose dielectric breakdown can cause an electrical shock to the patient arises, immediately before or immediately after skin contact during a skin conditioning procedure. In another preferred embodiment, the electrode to skin impedance change as the electrode touches the skin is used to activate a switch that transfers RF to the electrode. | 12-09-2010 |
20100312234 | FAN-BEAM MICROWAVE HORN FOR BLOODLESS RESECTION - A handheld microwave waveguide provides a planar microwave beam for rapid coagulation of a strip of tissue in an organ providing a barrier against blood loss during resection operations. | 12-09-2010 |
20100312237 | ELECTROSURGICAL DEVICE FOR RESTRICTING LOSS OF BLOOD DURING SURGERY - A device for restricting the loss of blood during a surgical procedure is disclosed. The device generates localized heating in an organ or volume of tissue and includes an applicator that is positioned against an organ or tissue to be treated, an array of retractable needles that deliver irradiating energy in the vicinity of a selected incision point; a switching mechanism in communication with the needles for energizing and causing movement of the needles and a power unit for supplying irradiating power to the needles when extended into the organ or tissue. | 12-09-2010 |
20100312238 | Articulating Bipolar Electrosurgical Instrument - A bipolar electrosurgical instrument has a pair of pivotable juxtaposed jaw members and a locking mechanism operatively associated with a second of the jaw members. The locking mechanism has a first position engaged with the second jaw member for preventing movement of the second jaw member between an axially aligned orientation and at least one angled orientation, and a second position. The second position is disengaged from the second jaw member allowing for movement of the second jaw member between the axially aligned orientation and the at least one angled orientation. The instrument has an actuation mechanism operatively connected to a first of the jaw members with the actuation mechanism operable to move the first jaw member between an axially aligned first orientation and at least one angled orientation. An articulation knob is operatively associated with the locking mechanism and effectuates independent operation of the locking and actuation mechanisms. | 12-09-2010 |
20100318078 | Reinforced High Strength Microwave Antenna - High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity. | 12-16-2010 |
20100318079 | Transformer for RF Voltage Sensing - An electrosurgical system is disclosed. The electrosurgical system includes a multiple-secondary transformer configured for sensing voltage. The multiple-secondary transformer includes a primary winding coupled to an active terminal and a return terminal of the electrosurgical system and a plurality of secondary windings. Each of the secondary windings is configured to transform the radio frequency voltage into a sensed voltage. Each of the secondary windings includes an output coupled to a sensor circuit and configured to transmit the sensed voltage to the sensor circuit. | 12-16-2010 |
20100324547 | OPTIMIZING CHARACTERISTICS OF AN ELECTRIC FIELD TO INCREASE THE FIELD'S EFFECT ON PROLIFERATING CELLS - AC electric fields at particular frequencies and field strengths have been shown to be effective for destroying rapidly proliferating cells such as cancer cells. The effectiveness of such fields is improved when the field is sequentially switched between two or more different directions. The effectiveness of such fields can be improved even further by choosing the rate at which the field is switched between the various directions. | 12-23-2010 |
20110004205 | METHODS AND DEVICES FOR DELIVERING MICROWAVE ENERGY - The invention comprises novel microwave antennas wherein the microwave field profile generated by an antenna is tailored and optimized for a particular clinical application. The antennas disclosed herein incorporate one or more additional elements called shaping elements that use unique properties of microwaves such as interaction of a microwave field with one or more conductive or non-conductive elements to shape or redistribute the microwave field. Such shaping elements may be used to reduce the undesired backward coupling of the emitted microwave field to the transmission line. Such shaping elements may be used to increase the power efficiency of the antenna. The invention also discloses devices and methods for treating tissue with microwave energy emitted from the antennas for use in applications such as destroying a soil tissue by microwave ablation. | 01-06-2011 |
20110004206 | METHOD OF USING ELECTROSURGICAL DEVICE FOR RESTRICTING LOSS OF BLOOD DURING SURGERY - A device for generating localized heating in a selected body tissue includes an applicator having a source of microwave radiation and an array of retractable needles arranged so as to extend from one face of the applicator and, in operation, to confine the irradiated microwave energy field emanating from the applicator. The device has application for controlling excessive bleeding from severed tissue during surgical procedures. | 01-06-2011 |
20110009855 | EFFECT OF RADIOFREQUENCY FIELDS ON CELL GROWTH AND METHODS FOR LAPAROSCOPIC TREATMENT - The invention relates to the use of a radiofrequency/microwave treatment device and its effect on cell growth and survival, and in a more particular embodiment on endometriotic cells. In another aspect, the invention relates to the use of radiofrequency/microwave energy to effect cell growth in a desired population while substantially avoiding the deleterious heating and destructive effects on neighboring or nearby cells. Using the devices, specific treatment regimens and controlling energy output to cells and tissue can effect specific cells and diseases of humans, for example, those involving uncontrolled or deleterious cell growth. | 01-13-2011 |
20110009856 | Combination Radio Frequency Device for Electrosurgery - A radio frequency (RF) device for use in electrosurgery is provided. The RF device comprises a flexible support member having an actuator passage extending therethrough and a flexible actuator member at least partially disposed within the actuator passage. An insulator housing is connected on its proximal side to the distal end of the actuator so that when the flexible actuator member is rotated, the insulator housing rotates about a rotation axis through the distal actuator end. The device also comprises at least one electrode extending distally from the insulator housing, the at least one electrode having first and second energy transmitting surfaces configured so that if the first energy transmitting surface is positioned to deliver electrical current with the insulator housing in a first angular orientation, rotation of the insulator housing to a second orientation positions the second energy transmitting for transfer of electrical current. | 01-13-2011 |
20110009857 | OPEN-IRRIGATED ABLATION CATHETER WITH TURBULENT FLOW - According to an embodiment of a method for cooling an open-irrigated ablation electrode, pressurized fluid is delivered from a fluid lumen of a catheter body into an ablation electrode. Fluid flow in the fluid lumen is generally laminar. The generally laminar fluid flow is transformed from the fluid lumen into a turbulent fluid flow within the ablation electrode. The pressurized fluid with turbulent fluid flow is delivered through irrigation ports of the ablation electrode. | 01-13-2011 |
20110009858 | RADIO FREQUENCY-BASED CATHETER SYSTEM WITH IMPROVED DEFLECTION AND STEERING MECHANISMS - A RF catheter system includes a catheter with a proximal portion, a distal portion having a distal end and a lumen extending from the proximal portion to the distal portion. Inner and outer coaxially aligned conductors extend within the catheter and are coaxial with the lumen. A deflectable catheter guide is disposed within the catheter lumen and extends proximally within the catheter lumen and terminates distally of the distal end of the catheter to define a biological ablation pathway. A radio-frequency antenna is disposed at the distal portion of the catheter and is in electrical communication with the inner and outer coaxially aligned conductors. The radio-frequency antenna is adaptable to receive and transmit radio-frequency energy for ablating biological tissue along the ablation pathway. | 01-13-2011 |
20110015625 | METHOD AND APPARATUS FOR FRACTIONAL SKIN TREATMENT - An apparatus for cosmetic RF skin treatment where the RF energy supply is isolated from the patient treated, such that in course of treatment no undesired current flows through the subject body. | 01-20-2011 |
20110015626 | MICROWAVE APPLICATOR - A microwave applicator having a probe which comprises an elongate shaft ( | 01-20-2011 |
20110022041 | SYSTEMS AND METHODS FOR TITRATING RF ABLATION - An embodiment of a system for ablating tissue comprises an electrode configured for use to deliver RF power to ablate the tissue, and a heat flow sensor configured to provide a measurement of heat flow from the electrode to blood or irrigation fluid. According to some embodiments, the system further comprises an RF source configured to generate RF power connected to the electrode (P | 01-27-2011 |
20110022042 | TISSUE ABLATION PROBES AND METHODS FOR TREATING OSTEOID OSTEOMAS - A method of treating bone tissue (e.g., a tumor, such as an osteoid osteoma) is provided. The method comprises introducing an ablation probe into bone tissue, deploying at least one ablative element transversely from the probe into the bone tissue, and conveying ablation energy from the ablative element(s) to ablate the bone tissue. In one method, the ablative element(s) comprises a pair of ablative elements, in which case, the ablative elements are transversely deployed from the ablation probe in opposite directions. In another method, the ablative element(s) comprises a plurality of ablative elements, in which case, the ablative elements are transversely deployed outward from the ablation probe in a plane. The ablation energy conveyed from the ablative element(s) may have a non-spherical profile, e.g., an elongated profile, to match a non-spherical profile of the bone tissue to be treated. | 01-27-2011 |
20110028962 | ADJUSTABLE PULMONARY VEIN ABLATION CATHETER - A medical device is provided, including an elongate body defining a lumen therethrough; a shaft extending through the lumen; and an electrode array coupled to the elongate body at a first end and coupled to the shaft at a second end, where linear manipulation of the shaft causes the electrode array to transition from a first geometric configuration to a second configuration, and where rotational manipulation of the shaft causes the electrode array to transition from the second geometric configuration to a third configuration. | 02-03-2011 |
20110028963 | Power Level Transitioning in a Surgical Instrument - An electrosurgical system and method are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The generator is further adapted to supply an electrosurgical signal at a variable power level. The generator includes sensor circuitry adapted to sense tissue impedance and/or an electrosurgical signal zero crossing. The generator also includes a controller, which may include a microprocessor, that is adapted to receive a tissue impedance signal and/or a waveform zero crossing signal. The controller is configured to monitor tissue impedance, and in response to a threshold value of impedance being reached, to cause a power level of the electrosurgical energy to transition from a first power level to a second power level. The slew rate of the power transition may be in accordance with a transition function, such as a cosine function. The power transition may additionally or alternatively be performed during, or correlated with, an electrosurgical signal zero crossing. The system also includes an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue for treatment. | 02-03-2011 |
20110028964 | ELECTROSURGICAL INSTRUMENT - A bipolar electrosurgical instrument ( | 02-03-2011 |
20110028965 | Fluid-Assisted Electrosurgical Devices, Electrosurgical Unit With Pump And Methods Of Use Thereof - The invention provides an electrosurgical unit comprising a radio-frequency power source and a pump, with the throughput of fluid expelled by the pump controlled by the RF power level setting and fluid flow rate setting. The invention also provides various electrosurgical devices which may be used with the electrosurgical unit. In one embodiment, the electrosurgical device comprises a first electrode tip spaced next to a second electrode tip with a portion of the first electrode tip facing the second electrode tip and a portion of the second electrode tip facing the first electrode tip, the first electrode tip and the second electrode tip both having a spherical distal end, and a fluid outlet arrangement to expel fluid onto the electrode tips solely at locations remote from the electrode tip portions facing each other. | 02-03-2011 |
20110034913 | Directive Window Ablation Antenna with Dielectric Loading - An electrosurgical device for directing energy to a target volume of tissue includes a coaxial feedline having an inner conductor, an outer conductor coaxially disposed around the inner conductor, and a dielectric material disposed therebetween. An elongated electrically-conductive member is longitudinally disposed at a distal end of the inner conductor. A balun structure is disposed on the outer conductor. The device also includes an electrically-conductive cylinder coaxially disposed around a distal portion of the balun structure, and a dielectric structure disposed substantially adjacent to a distal end of the electrically-conductive cylinder, wherein the dielectric structure longitudinally extends from the distal end of the electrically-conductive cylinder to a distal end of the electrically-conductive member. | 02-10-2011 |
20110034914 | Devices for Electrosurgery - Devices for electrosurgery by means of oxy-hydro combustion and methods for use of such devices in electrosurgical procedures. Provided are devices for combustion of oxygen and hydrogen, or other hydrocarbon fuels, wherein oxygen and hydrogen may be generated by electrolysis or oxygen and hydrogen, or other hydrocarbon fuels, may be supplied, such devices including an ignition source and an adjustable and translatable sheath for controlling such reactions. Also provided is a detachable and positionable sheath for controlling reactions and minimizing tissue damage with conventional electrosurgery devices. | 02-10-2011 |
20110034915 | BIPOLAR BELT SYSTEMS AND METHODS - Bipolar belt ablation systems and methods for treating patient tissue involve the use of an ablation an ablation apparatus with a plurality of ablation elements carried by a flexible tube structure, a radiofrequency generator capable of delivering a plurality of differing radiofrequency power signals to the ablation elements of the ablation device, wires transmitting the radiofrequency power signals from the radiofrequency generator to the ablation elements, and a control mechanism to enable temperature-based power control to each of the powered ablation elements. | 02-10-2011 |
20110034916 | NANOPARTICLE-MEDIATED MICROWAVE TREATMENT METHODS - A method is provided for using magnetic nanoparticles to enhance microwave therapies for treating cells and tissues. The nanoparticles are designed to transduce microwave radiation into heat and furthermore, the nanoparticles may include specific tissue targeting and other functionality for enhancing in situ effects. In one embodiment, nanoparticles are introduced into a tissue system and a microwave field is applied. The nanoparticles react to the microwave energy by releasing heat thus heating the tissue and inducing hyperthermia (below 50° C.) or thermotherapy (above 50° C.). The nanoparticles can be designed for optimal heat production response at specific microwave frequencies and/or ranges of microwave frequencies where these frequencies may span the entire microwave spectrum, namely 300 MHz (310 | 02-10-2011 |
20110040299 | Systems, Apparatus, Methods and Procedures for the Noninvasive Treatment of Tissue Using Microwave Energy - The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue, including treatment using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using, for example, microwave energy. | 02-17-2011 |
20110054457 | System and Method for Performing an Electrosurgical Procedure Using an Imaging Compatible Electrosurgical System - A method for performing an electrosurgical procedure includes the steps of supplying energy from an energy source to tissue and continuously receiving, as input, an imaging signal generated by an imaging device adapted to image tissue. The method also includes modifying the supply of energy from the energy source to tissue based on the imaging signal. | 03-03-2011 |
20110054458 | Microwave Ablation with Tissue Temperature Monitoring - A microwave ablation system for treating tissue includes at least first and second antennas, a microwave output stage, and a sensor component. The at least first and second antennas are adapted for insertion into tissue. The microwave output stage is adapted to generate microwave energy and is operatively coupled to at least the first antenna to transmit the microwave energy into the tissue. The sensor component is operatively coupled to the first and second antennas and operatively monitors the microwave energy therebetween. | 03-03-2011 |
20110054459 | Ecogenic Cooled Microwave Ablation Antenna - An electrosurgical positioning and energy delivery system includes a positioning introducer, a microwave energy delivery device and a jacket configured to slideably receive one of the positioning introducer and the microwave energy delivery device. The positioning introducer and the jacket form a positioning assembly and are configured for percutaneous insertion in patient tissue. The positioning assembly is visible percutaneously to an imaging system. The microwave energy delivery device and the jacket form a microwave energy delivery assembly. The microwave energy delivery assembly is configured to circulate cooling fluid therethrough during delivery of microwave energy to the patient tissue. | 03-03-2011 |
20110054460 | Electrosurgical Generator - An electrosurgical system is provided. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. A power source operably couples to the electrosurgical generator and is configured to deliver power to one or more types of loads connected to the electrosurgical generator. The electrosurgical generator includes a controller including a microprocessor coupled to the electrosurgical generator and configured to control the output of the electrosurgical generator. A fiber optic connection circuit is in operative communication with the controller and includes one or more types of logic devices and one or more types of fiber optic channels. The fiber optic connection circuit is configured to mitigate leakage current associated with at least one of a plurality of components operatively associated with the electrosurgical generator by providing isolation. | 03-03-2011 |
20110054461 | Electrosurgical Electrode with Insulative Coating - An electrode adapted to connect to an electrosurgical instrument is provided. The electrode includes a proximal end that is adapted to connect to an electrosurgical instrument and an electrosurgical energy source. The electrode includes a distal end configured for treating tissue. The distal end of the electrode includes a first portion having one or more edges and a second portion having a substantially blunt profile. An insulative material is disposed over at least the distal end of the electrode. The insulative material includes a first thickness at the first portion and a second thickness at the second portion, wherein upon activation, the insulative material disposed over the first portion breaks away from the first portion allowing energy to travel to tissue from the first portion. | 03-03-2011 |
20110054462 | Electrosurgical instrument with multi-function handpiece - An electrosurgical instrument with which a single handpiece can be connected that can be used for cutting and for coagulation without touching the instrument after the front panel settings have been made. The handpiece, of the extendable electrode type, comprises essentially two cables one terminating in a male connector configured to mate to the bipolar output connector of the electrosurgical unit, and a second terminating in a male connector configured to mate with the monopolar output connector of the electrosurgical unit. The output connectors can be selectively activated. | 03-03-2011 |
20110060325 | Microwave Antenna Probe with High-Strength Ceramic Coupler - A microwave antenna probe incorporating a high-strength antenna coupler is described herein. The microwave antenna has a radiating portion connected by a coaxial feedline to a source of therapeutic energy, e.g., a microwave generator. Proximal and distal radiating portions of the antenna assembly are separated by a microwave antenna coupler. In embodiments, the described antenna coupler is generally cylindrical in shape and includes a central section having a diameter substantially equivalent to the radiating sections. The coupler includes end sections of a smaller diameter than the central section that are dimensioned to fit within the ends of the radiating section. The end portions include a groove that is adapted to receive a corresponding rib formed within the respective ends of the radiating section. The coupler includes an axial opening defined therein into which a tubular collar in fixed using an interference fit. The outward forces of the collar and the inward forces of the radiating section places the coupler under compression, which improves the strength of the coupler, and the strength of the overall probe assembly. | 03-10-2011 |
20110060326 | System and Method for Performing an Ablation Procedure - A method of performing an ablation procedure includes the initial step of supplying a fluid to a cooling chamber defined within an antenna assembly. The method also includes the steps of decreasing the temperature of the fluid to form a solid material and inserting the antenna assembly into tissue. The method also includes the step of supplying energy to the antenna assembly to treat tissue. Residual heat from the antenna assembly transitions the solid material back to the fluid. The method also includes the step of circulating the fluid within the antenna assembly to dissipate heat emanating from the antenna assembly. | 03-10-2011 |
20110060327 | Apparatus and Methods for Arrhythmia Treatment Based on Spectral Mapping During Sinus Rhythm - Apparatus for curative ablation are provided to achieve the inactivation or destruction of fibrillar myocardium of the so-called AF nests. In addition, fibrillar myocardium may be identified and mapped by spectral analysis and phase study of the tissue during sinus rhythm. The procedure may be performed by transseptal puncture using only one catheter for ablation and mapping. The methods may be used to localize the application targets even during an arrhythmia. | 03-10-2011 |
20110060328 | PORTABLE THERAPY DELIVERY DEVICE WITH FLUID DELIVERY - The disclosure describes a system that may be used to deliver a plurality of therapies using one portable device. The system includes a fluid pump that pumps fluid from a container to a therapy device to treat a patient. The fluid pump resides within a pump bay of the therapy delivery device. The fluid may be used to increase cool a tissue of the patient or clear debris. In one embodiment, generated signals may be delivered by a peripheral accessory connected to the generator through the connector board, and the generator may generate radio frequency (RF) energy for the purpose of prostate tissue ablation, where the effective ablation area of an electrode is increased by the fluid. In addition, the therapy delivery device may include a touch screen user interface, a visual operation indicator, a signal generator, and a removable connector board. | 03-10-2011 |
20110066144 | Perfused Core Dielectrically Loaded Dipole Microwave Antenna Probe - A microwave surgical ablation probe having an arrangement of coolant channels in fluid communication with a cooling chamber disposed within the distal end of the probe is disclosed. A hypotube having one or more longitudinal ribs extending radially inward from an inner surface thereof is coaxially disposed around a coaxial feedline. The longitudinal ribs of the hypotube engage an outer sheath of the feedline to define a fluid inflow channel to deliver coolant to the cooling chamber, and a fluid outflow channel to receive fluid from the cooling chamber. The cooling chamber may be formed from porous ceramic or porous metallic material that provides structural support to the probe while permitting coolant to circulate therethrough. The probe includes dielectric and choke members that are adapted to control the microwave radiation pattern (e.g., ablation shape), and which may provide improved coupling of the probe to tissue. | 03-17-2011 |
20110066145 | RF cosmetic rejuvenation device and procedure - An electrode especially useful for RF skin tightening procedures is characterized by an active front that is conical in part with the conical surface having a cone angle that is shallower than the corresponding angle in known electrodes. Preferably, the electrode of the invention has a conical section whose surface forms an angle greater than 60 degrees with the longitudinal axis of the electrode, and the outside diameter of the conical section is greater than 50% of the overall outside diameter of the electrode. | 03-17-2011 |
20110066146 | Suction Stabilized Epicardial Ablation Devices - A suction assisted ablation device having a support surface, suction elements disposed adjacent the support surface, at least one electrode and at least one suction conduit is provided. The device may further include fluid openings, which allow fluid to irrigate target tissue and aid in ablation. A method for ablating tissue using suction is also provided. | 03-17-2011 |
20110066147 | SYSTEM AND METHOD FOR PREDICTING LESION SIZE SHORTLY AFTER ONSET OF RF ENERGY DELIVERY - Lesion size or volume prediction shortly after the onset of an ablation procedure can inform or control the ablation procedure. The prediction and/or control is made without regard to an actual detected temperature in the vicinity of the ablation electrodes. As a consequence, the system has utility with irrigated catheter constructions and other situations in which local irrigation in the vicinity of an ablation site would otherwise interfere with a prediction or control scheme that solely relies upon temperature measurements. | 03-17-2011 |
20110071511 | System and Method for Checking High Power Microwave Ablation System Status on Startup - A microwave ablation system includes a generator operable to output energy and an ablation probe coupled to the generator that delivers the energy to a tissue region. The ablation system also includes a controller operable to control the generator and at least one sensor coupled to the ablation probe and the controller that detects an operating parameter of the ablation probe. The controller performs a system check by ramping up an energy output of the generator from a low energy level to a high energy level and monitors an output from the sensor at predetermined intervals of time during the system check to determine an abnormal state. The controller controls the generator to cease the energy output when the controller determines an abnormal state. | 03-24-2011 |
20110071512 | Tissue Ablation System with Energy Distribution - A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices. | 03-24-2011 |
20110071513 | COMMON-MODE NOISE FILTER OF RADIO FREQUENCY GENERATOR FOR RADIOFREQUENCY ABLATION - Disclosed herein is a common-mode noise filter of an RF generator for radiofrequency ablation. The common-mode noise filter of the RF generator for RFA amplifies an oscillation frequency provided by an oscillator to AC output using amplification means, and providing the amplified oscillation frequency to electrodes. The common-mode noise filter is disposed between the amplification means and the electrodes, thus eliminating harmonic components generated by the electrodes depending on conditions of medical treatment when the electrodes are used. Accordingly, the present invention can prevent the distortion of images or waveforms attributable to harmonic components from occurring in a diagnostic imaging device such as a diagnostic ultrasound system used together with the RF generator for RFA as well as in the RF generator's own display unit. | 03-24-2011 |
20110071514 | METHOD AND SYSTEM FOR CONTROLLING RADIO FREQUENCY OUTPUT ACCORDING TO CHANGE IN IMPEDANCE OF BIOLOGICAL CELLS - Disclosed herein is a method and system for controlling radio frequency (RF) output according to the change in impedance of biological cells. In the method of controlling radio frequency (RF) output according to a change in impedance of biological cells, phases of RF voltage and current applied to the electrode are detected and a difference between the phases is obtained. A change in impedance such as a resistance component and a capacitive reactance component (XC) of the biological cells at the time of performing cauterization is obtained. An inductive reactance component (XL) is connected to an RF output terminal so as to cancel the capacitive reactance component (XC) (XC=XL), thus enabling the output impedance to have a resistance component. | 03-24-2011 |
20110071515 | PERCUTANEOUS AND LAPAROSCOPIC SURGICAL INSTRUMENT - The present invention relates to a Radiofrequency surgical instrument comprising at least two dry electrodes ( | 03-24-2011 |
20110077631 | Electrosurgical Generator User Interface - An electrosurgical generator is disclosed. The generator includes an output stage configured to generate a waveform, a first input configured to adjust a cut setting representative of a cutting effect of the waveform, and a second input configured to adjust a hemostasis setting representative of a hemostasis effect of the waveform. The generator also includes a controller configured to receive cut and hemostasis settings and to adjust one of a duty cycle, a crest factor and a power level of the waveform to achieve a combined cutting and hemostasis effect based on the cut and hemostasis settings. | 03-31-2011 |
20110077632 | Feedpoint Optimization for Microwave Ablation Dipole Antenna With Integrated Tip - A microwave ablation system includes a generator operable to output energy and an antenna coupled to the generator via a coaxial cable. The antenna delivers energy to tissue and includes a proximal radiating section and a distal radiating section. The antenna also includes a feedpoint section defined by the portion of the distal radiating section that underlaps the proximal radiating section. | 03-31-2011 |
20110077633 | Electrosurgical Devices, Directional Reflector Assemblies Coupleable Thereto, and Electrosurgical Systems Including Same - A directional reflector assembly includes a tubular shaft having a proximal end and a distal end and adapted to operably engage an electrosurgical ablation probe, and a conical aperture having a proximal open apex joined to a distal end of the tubular shaft, and a distal open base, wherein an interior volume of the tubular shaft is open to the conical aperture. | 03-31-2011 |
20110077634 | Microwave Surface Ablation Using Conical Probe - An electromagnetic surgical ablation probe having a conical hood reflector and method of manufacture thereof is disclosed. The disclosed probe includes a shaft assembly that has a coaxial feedline core having an inner conductor and an outer conductor separated by an insulating layer. A tubular catheter is disposed coaxially around the feedline and is configured to deliver coolant, such as saline or deionized water, to a coolant chamber at a distal end formed within the conical reflector. A radiating section disposed within the conical reflector may have a conical, cylindrical, or other suitable shape. A membrane disposed across a distal opening of the conical reflector seals coolant within the coolant chamber, and may conform to tissue contours during use. A resilient aperture may be included at the periphery of the conical hood. The shaft assembly may include an angled section, an adjustable section, and, additionally or alternatively, a malleable section. | 03-31-2011 |
20110077635 | Fluid Cooled Choke Dielectric and Coaxial Cable Dielectric - The microwave antenna assembly includes a feedline electrically connected to an elongated shaft by a choke electrical connector. The feedline includes an inner conductor, an outer conductor, an elongated shaft and a choke electrical connector. The inner conductor is disposed in coaxial arrangement with the inner conductor and forms a dielectric supply lumen therebetween. The elongated shaft at least partially surrounding the feedline and form a dielectric return lumen therebetween. The choke electrical connector surrounds at least a portion of the feedline and electrically connects the feedline outer conductor to the elongated shaft. A low-loss dielectric fluid is supplied between the inner conductor and the outer conductor of the feedline and forms a dielectric barrier therebetween. The low-loss dielectric fluid also forms a dielectric barrier between the outer conductor of the feedline and the elongated shaft and the choke electrical connector forms a plurality of apertures extending therethrough, the apertures forming at least a portion of the dielectric return lumen. | 03-31-2011 |
20110077636 | Management of Voltage Standing Wave Ratio at Skin Surface During Microwave Ablation - A dielectric spacer for use during microwave ablation of tissue is disclosed. The dielectric spacer includes a housing having a predetermined thickness and a skin-contacting bottom surface. The housing is configured to be filled with a dielectric material having a predetermined dielectric permittivity. The housing is further configured to be placed on the tissue in proximity with at least one microwave antenna assembly, wherein the thickness and the dielectric permittivity are configured to shift a maximum voltage standing wave ratio of the at least one microwave antenna assembly. | 03-31-2011 |
20110077637 | Flow Rate Monitor for Fluid Cooled Microwave Ablation Probe - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow. | 03-31-2011 |
20110077638 | Flow Rate Monitor For Fluid Cooled Microwave Ablation Probe - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow. | 03-31-2011 |
20110077639 | Flow Rate Monitor for Fluid Cooled Microwave Ablation Probe - A microwave ablation system includes a generator operable to output energy and an ablation probe coupled to the generator that delivers the energy to a tissue region. The ablation system also includes a controller operable to control the generator and at least one sensor coupled to the ablation probe and the controller that detects an operating parameter of the ablation probe. The controller performs a system check by ramping up an energy output of the generator from a low energy level to a high energy level and monitors an output from the sensor at predetermined intervals of time during the system check to determine an abnormal state. The controller controls the generator to cease the energy output when the controller determines an abnormal state. | 03-31-2011 |
20110077640 | LIQUID DELIVERY APPARATUS FOR TISSUE ABLATION - An apparatus for use in a tissue ablation procedure includes a base, a fluid delivery tube coupled to the base, a first lever rotatably coupled to the base, the first lever having a first end biased to press against a portion of the fluid delivery tube to thereby close a lumen within the fluid delivery tube, and a second end, and a securing mechanism for securing the base relative to an ablation device. An ablation system includes an ablation device having an electrode, a fluid delivery tube coupled to the ablation device, and a control for simultaneously activating the electrode and opening the fluid delivery tube. A method of performing tissue ablation includes operating a control to activate an electrode, thereby delivering ablation energy to target tissue, wherein the step of operating the control also causes fluid to be delivered to the target tissue. | 03-31-2011 |
20110087210 | MAGNETICALLY-COUPLED BIPOLAR RADIOFREQUENCY ABLATION CATHETER - The present invention provides a bipolar radiofrequency ablation catheter comprising a working catheter and a magnetic catheter. The magnetic catheter comprises a first tube; a magnet; a first electrode; and a first electrode connector, and the working catheter comprises a second tube; a metallic element; a second electrode; and a second electrode connector. According to the present invention, it is possible to create transmural lesions more completely and easily at a thick myocardial region such as left ventricle in which a transmural lesion could not be easily created by using conventional radiofrequency ablation catheters and thus it is expected to increase the treatment efficiency for tachycardia such as ventricular tachycardia and atrial fibrillation. | 04-14-2011 |
20110092968 | METHODS AND APPARATUS FOR DISPERSING CURRENT FLOW IN ELECTROSURGERY - Methods and apparatus for delivering, monitoring, balancing, and/or dispersing high-frequency current flow in monopolar electrosurgery. The methods generally include positioning an active electrode in or on target tissue, positioning at least two dispersive electrodes on tissue remote from the target tissue, establishing electrical current flow from the active electrode through the dispersive electrodes, and individually adjusting the current through at least one of the dispersive electrodes to balance the current through the dispersive electrodes. By adjusting and balancing the current through two or more dispersive electrodes, safety of electrosurgical systems may be enhanced by preventing unwanted patient burns. | 04-21-2011 |
20110098695 | System and Method for Monitoring Ablation Size - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with memory associated with the power source. The memory includes one or more data look-up tables including one or more electrical parameter associated with the microwave antenna. The one or more electrical parameters corresponding to an ablation zone having a radius. The one or more electrical parameters include a threshold value, wherein when the threshold value is met the power source is adjusted to form an ablation zone of suitable proportion. | 04-28-2011 |
20110098696 | System and Method for Monitoring Ablation Size - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A radiation detection device is operably disposed on the microwave antenna. The radiation detection device is configured to generate a voltage corresponding to a radius of the ablation zone, wherein the radiation detection device is in operative communication with at least one module associated with the power source. The at least one module triggers a signal when a predetermined threshold voltage is measured corresponding to the radius of the ablation zone. | 04-28-2011 |
20110098697 | System and Method for Monitoring Ablation Size - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with a memory associated with the power source. The memory includes one or more data look-up tables including data pertaining to a control curve varying over time and being representative of one or more electrical parameters associated with the microwave antenna. Points along the control curve correspond to a value of the electrical parameters and the ablation zone control module triggers a signal when a predetermined threshold value of the electrical parameter(s) is measured corresponding to the radius of the ablation zone. | 04-28-2011 |
20110098698 | Systems and methods for monitoring and controlling use of medical devices - A device carries a use monitoring element that possesses a state or condition that changes in response to use of the device and that is sensed when the device is presented for use. Reuse of the device is not permitted, if the use monitoring element indicates a prior use. | 04-28-2011 |
20110098699 | Apparatus and Methods for Arrhythmia Treatment Based on Spectral Mapping During Sinus Rhythm - Apparatus for curative ablation are provided to achieve the inactivation or destruction of fibrillar myocardium of the so-called AF nests. In addition, fibrillar myocardium may be identified and mapped by spectral analysis and phase study of the tissue during sinus rhythm. The procedure may be performed by transseptal puncture using only one catheter for ablation and mapping. The methods may be used to localize the application targets even during an arrhythmia. | 04-28-2011 |
20110112523 | SYSTEMS, METHODS AND DEVICES FOR ENDOMETRIAL ABLATION UTILIZING RADIO FREQUENCY - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric. Radiofrequency energy is applied for a first interval of time at constant power, the power being sufficient to capacitively couple current across the dielectric to the contacted endometrial tissue. A voltage parameter measured within the first interval, and radiofrequency energy is applied at a constant voltage over a second, treatment interval to ablate endometrial tissue, the constant voltage being related to the recorded voltage. | 05-12-2011 |
20110112524 | Hollow body cavity ablation apparatus - An ablation apparatus places electrodes at the perimeter of a cavity. In an embodiment, the alternating electric field is used to expose the cavity to enough energy to ablate the cavity. In an embodiment, two modes are used to expose different regions of the cavity to different amounts of power for so that the thermal effect is more uniform. In an embodiment, the electrodes have a relatively large surface area so as to avoid charring the cavity, but are shaped so as to fit within a body orifice. For example, the diameter of the sheathed housing the electrodes during penetration may be only 5.5 mm. | 05-12-2011 |
20110118718 | METHODS AND SYSTEMS FOR ENDOMETRIAL ABLATION UTILIZING RADIO FREQUENCY - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes. An indicator mechanism is operatively coupled to the wall and configured to indicate non-expanded and expanded shapes of the wall. | 05-19-2011 |
20110118719 | SYSTEMS AND METHODS FOR ENDOMETRIAL ABLATION - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes. An indicator mechanism is operatively coupled to the wall and configured to indicate non-expanded and expanded shapes of the wall. An expandable member, such as a balloon, is provided that expands to close the cervical canal during ablation. | 05-19-2011 |
20110118720 | MICROWAVE COAGULATION APPLICATOR AND SYSTEM - A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A temperature sensor senses the approximate temperature of cooling fluid to indicate cooling fluid is circulating. A multiplexing and power splitting circuit provides outputs tuned for one or for more than one applicator to be attached and detects the number of applicators and correct connection. A cadence sound generator can be used in conjunction with depth markings on the applicator to provide substantially constant withdrawal of the applicator from the treated tissue after treatment to provide track ablation. | 05-19-2011 |
20110118721 | Electromagnetic Energy Delivery Devices Including an Energy Applicator Array and Electrosurgical Systems Including Same - An electrosurgical system for directing energy to tissue includes a generator assembly operable to supply power having a selected phase, amplitude and frequency, and an applicator array assembly. The applicator array assembly includes a shell assembly, a plurality of energy applicators disposed within the shell assembly, and a power divider unit electrically coupled to the generator assembly. The power divider unit is operable to divide power into the applicator array assembly. | 05-19-2011 |
20110118722 | ELECTROSURGICAL METHODS AND DEVICES EMPLOYING INDUCTIVE ENERGY - This disclosure relates generally to methods and devices for modifying biological tissue. In one embodiment, a device is provided suitable for applying RF energy to a treatment site in the presence of a supplemental magnetic field. The device comprises one or more electrodes electrically coupled to an RF generator, and a means for supplying a supplemental magnetic field. In another embodiment, a device is provided suitable for inducing an electrical current in a tissue. The device comprises a means for creating a magnetic field and a passive element adapted for reducing the amount of electrical current at the surface of the tissue. Also provided are methods of use of such devices. The methods and devices disclosed herein find utility, for example, in the field of medicine and cosmetology. | 05-19-2011 |
20110118723 | MICROWAVE COAGULATION APPLICATOR AND SYSTEM - A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A fluid circulation system provides a plurality of fluid supply connectors and fluid return connectors which can be connected and used with any number of applicators between one and the number of the fluid supply connectors provided by the system. A portion of the applicator inserted into the tissue can stick to the tissue to stabilize the applicator during treatment. A warning marking on the applicator can be used during track ablation to prevent ablation of the patient skin tissue. | 05-19-2011 |
20110118724 | MICROWAVE COAGULATION APPLICATOR AND SYSTEM WITH FLUID INJECTION - A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed fluid space around the transmission line. A fluid circulation system circulates fluid in the fluid space. A portion of or all of the circulating fluid can be injected into tissue that surrounds the applicator body from approximately the proximal end of a desired heating zone produced by microwave energy radiated from the antenna along the applicator body toward the proximal end of the applicator to hydrate and wet the tissue outside the proximal end of the desired heating zone to reduce the drying of this tissue and limit extension of the heating and ablation zone proximally along the applicator body. | 05-19-2011 |
20110118725 | NON-INVASIVE AND MINIMALLY INVASIVE DENERVATION METHODS AND SYSTEMS FOR PERFORMING THE SAME - A system and method can be used to denervate at least a portion of a bronchial tree. An energy emitter of an instrument is percutaneously delivered to a treatment site and outputs energy to damage nerve tissue of the bronchial tree. The denervation procedure can be performed without damaging non-targeted tissue. Minimally invasive methods can be used to open airways to improve lung function in subjects with COPD, asthma, or the like. Different sections of the bronchial tree can be denervated while leaving airways intact to reduce recovery times. | 05-19-2011 |
20110118726 | ASSEMBLY OF STAGGERED ABLATION ELEMENTS - An ablation catheter comprises a catheter body extending longitudinally between a proximal end and a distal end along a longitudinal axis; and an ablation element assembly comprising ablation elements connected to the catheter body, each ablation element to be energized to produce an ablation zone. The ablation elements are distributed in a staggered configuration such that the ablation zones of the ablation elements span one or more open arc segments around the longitudinal axis, but the ablation zones of all ablation elements projected longitudinally onto any lateral plane which is perpendicular to the longitudinal axis span a substantially closed loop around the longitudinal axis. Since the ablation zones do not form a closed loop, the risk of renal artery/vein stenosis is reduced or eliminated. Since the ablation zones of all ablation elements projected longitudinally onto any lateral plane span a substantially closed loop, substantially complete renal denervation is achieved. | 05-19-2011 |
20110118727 | SYSTEM AND METHOD FOR ASSESSING THE FORMATION OF A LESION IN TISSUE - A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ECU) configured to acquire magnitudes for a component of a complex impedance between an electrode and tissue, and the power applied to the tissue during lesion formation. The ECU is configured to calculate a value responsive to the complex impedance component and the power. The value is indicative of a predicted lesion depth, a likelihood the lesion has reached a predetermined depth, or a predicted tissue temperature. The method includes acquiring magnitudes for a component of a complex impedance between an electrode and tissue and the power applied during lesion formation. The method includes calculating a value responsive to the complex impedance component and the power, the value being indicative of a predicted lesion depth, a likelihood the lesion has reached a predetermined depth, and/or a predicted tissue temperature. | 05-19-2011 |
20110125144 | METHOD OF TREATING ATRIAL FIBRILLATION THROUGH EPICARDIAL LESION - A method of treating atrial fibrillation through minimal access ablation to form atrial lesions on the dome of the atrium. | 05-26-2011 |
20110125145 | DEVICES AND METHODS FOR CREATING CONTINUOUS LESIONS - The present invention discloses devices and methods for creating multiple lesions using ablation devices in anatomical regions such as the heart, for example to treat cardiac arrhythmias. The present invention discloses methods and devices to create continuous lesions using area ablation devices. The present invention discloses various embodiments of reference assemblies for accurately positioning ablation devices having ablating portions, especially deployable ablation portions adapted for area ablation. The ablation devices are positioned using the reference assemblies in the anatomy to create one or more lesions. The present invention also discloses several method embodiments for creating continuous lesions using deployable ablating portions to produce two or more overlapping lesions. | 05-26-2011 |
20110125146 | Cartridge Assembly For Electrosurgical Devices, Electrosurgical Unit And Methods Of Use Thereof - The invention provides a cartridge assembly to couple a tissue treatment device with an electrosurgical unit, with the cartridge assembly operable with a power delivery apparatus and a fluid delivery apparatus of the electrosurgical unit. The invention also provides an electrosurgical unit comprising a power delivery apparatus and a fluid delivery apparatus operable with the cartridge assembly and a system thereof. | 05-26-2011 |
20110125147 | SYSTEMS AND METHODS FOR ABLATION OF TISSUE - A system for treating tissue includes a probe assembly having a cannula, a shaft, and one or more needle electrodes. The shaft has a distal end, a proximal end, and a lumen extending between the distal and proximal ends of the shaft, and is slidable within the lumen of the cannula. Each needle electrode has a lumen that may be placed in communication with a port at a proximal end of the probe assembly, and is configured to deliver an occlusive element to a site. The system may further include an embolization actuator for delivering the occlusive element. A method of treating tissue includes placing an electrode at a site of a treatment region, occluding at least a part of a vessel located adjacent the site by delivering an occlusion element from an electrode, and delivering ablation energy to the site while the vessel is at least partially occluded. | 05-26-2011 |
20110125148 | Multiple Frequency Energy Supply and Coagulation System - An electromagnetic energy supply system for supplying electromagnetic energy signals to an applicator for applying the electromagnetic energy signals to tissue for heating such tissue can supply electromagnetic energy signals of at least one selected frequency of a plurality of frequencies available for selection. The system includes a plurality of individual electromagnetic signal generators each adapted to generate signals of a particular frequency, such as two microwave energy signal generators with one operating at 915 MHz and one operating at 1450 MHz. A system controller coordinates operation of the generators. Each generator is connected to connectors for connecting an applicator or array of applicators for applying the selected frequency electromagnetic energy signals to the tissue to be heated. A power splitting circuit can provide multiple connectors tuned for one or for more than one applicator to be connected. The system can provide a treatment using a single selected frequency, a plurality of selected frequencies simultaneously, or can switch between selected frequencies. | 05-26-2011 |
20110130750 | RADIO FREQUENCY ABLATION SYSTEM WITH TRACKING SENSOR - An RF ablation system has a hollow conductive coaxial cable comprising inner and outer coaxial tubular conductors, and an ablating member mounted at the distal end portion of the cable for delivery of radio frequency energy including microwaves to the target body tissue. The inner conductor has a central lumen and extends at least up to the ablating member. At least one electromagnetic tracking sensor coil with a magnetic core is located in the central lumen at the distal end portion of the cable, close to the distal tip of the cable, and connected to a signal processing unit. An electromagnetic field generator positioned in the vicinity of a patient undergoing treatment generates an electromagnetic field which induces a voltage in the sensor coil. The signal processing unit uses the induced voltage to calculate the position and orientation of the distal end portion or tip of the catheter in a patient's body. | 06-02-2011 |
20110130751 | ELECTROSURGICAL GENERATOR APPARATUS - An electrosurgical generator apparatus controls a variable output signal to electrodes. The generator apparatus operates in a cut mode, a coagulation mode or a stimulate mode. The generator apparatus comprises a DC power supply that provides regulated low voltage and high voltage outputs and a radio frequency (RF) waveform generator circuit that provides pulse duration modulation (PDM) of a carrier signal. The carrier signal directly affects the variable output signal to the electrodes. A control circuit controls a variable output signal to electrodes used in electrosurgical procedures. The control circuit comprises a DC power supply circuit that provides regulated low voltage and high voltage outputs and an RF waveform generator circuit that provides pulse duration modulation of a carrier signal. The carrier signal directly affects the variable output signal to the electrodes. | 06-02-2011 |
20110130752 | Kit For Penetrating The Cardiac Septum And For Implantation Of A Transeptal Lead, Including A Lead For Detection/Stimulation Of A Left Heart Cavity - A kit for penetrating the cardiac septum and for implanting a transeptal lead, including a lead for the detection/stimulation of a left heart cavity. This kit includes a screw lead ( | 06-02-2011 |
20110130753 | INTERNALLY LOCATED RETURN ELECTRODE ELECTROSURGICAL APPARATUS, SYSTEM AND METHOD - A bipolar, plasma-generating electrosurgical apparatus and system wherein the return electrode is enclosed within an electrosurgical shaft, and the active electrode is located on the outside surface of the shaft such that in treating the tissue, the tissue is exposed to plasma generated on the active electrode, but is minimally exposed to electric fields generated between the active and return electrodes. Due to the configuration of the electrodes, electric fields generated between the electrodes are directed away from the target tissue and inwardly towards the return electrode within the shaft, thereby electrical stimulation of neuromuscular structures in the tissue by the electric fields is minimized. | 06-02-2011 |
20110144633 | PRE-FORMED CURVED ABLATION CATHETER - A medical device includes an insertion tube, having a longitudinal axis and having a distal end adapted for insertion through a body passage into a cavity within a body of a patient. An electrode is located on the distal end of the insertion tube and is configured to contact tissue in the cavity. A resilient member is contained within the distal end of the insertion tube and is configured, when unconstrained, to cause the distal end to bend away from the longitudinal axis in a curved shape and to straighten toward the longitudinal axis when subjected to a force. | 06-16-2011 |
20110144634 | Method and Apparatus for Diagnosing and Treating Neural Dysfunction - A method and apparatus for diagnosing and treating neural dysfunction is disclosed. This device has the capability of delivering the therapeutic electrical energy to more than one treatment electrode simultaneously. In another exemplary embodiment, this device can perform EMG testing both before and after the therapeutic energy has been delivered, to assess whether the target nerve was successfully treated. In another embodiment, the device has the capability to record and store sensory stimulation thresholds both before and after treatment is described, which allows the clinician to accurately determine whether the target nerve has been desensitized. Energy control may achieved by simultaneously comparing the tip temperature of each treatment electrode to a set temperature selected by the operator, and regulating the therapeutic energy output to maintain the set temperature. In another embodiment, EMG, stimulation thresholds, and graphs of temperature versus time can be conveniently displayed on a two-dimensional graphics display. | 06-16-2011 |
20110152853 | Microwave Ablation System With Dielectric Temperature Probe - An electromagnetic surgical ablation system having a generator adapted to selectively provide surgical ablation energy to an ablation probe, and methods of operating same, are disclosed. The system includes a controller operatively coupled to the generator, and a tissue sensor probe operatively coupled to the controller. The tissue sensor provides a tissue temperature and at least one tissue dielectric property to the controller. During an electromagnetic tissue ablation procedure, the controller monitors tissue temperature and the at least one tissue dielectric property to determine tissue status, and to activate and deactivate the generator in accordance therewith. | 06-23-2011 |
20110152854 | SENSING CONTACT OF ABLATION CATHETER USING DIFFERENTIAL TEMPERATURE MEASUREMENTS - Tissue ablation is carried out using insertion tube having at least one ablation electrode, a first temperature sensor disposed on the distal portion sufficiently proximate the ablation electrode to detect heat generated during the ablation procedure, a second temperature sensor disposed on the distal portion sufficiently distant from the ablation electrode to be unable to detect the heat, and electronic logic circuitry linked to the first temperature sensor and the second temperature sensor and programmed to compute a temperature differential between respective temperatures sensed by the first temperature sensor and the second temperature sensor when conveying the electromagnetic energy. Satisfactory contact status between the ablation electrode and the target tissue is indicated when the temperature differential exceeds a predetermined threshold. | 06-23-2011 |
20110152855 | DELIVERY DEVICES WITH COOLABLE ENERGY EMITTING ASSEMBLIES - Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. | 06-23-2011 |
20110160716 | MEASURING WEAK SIGNALS OVER ABLATION LINES - A medical probe, including an ablation electrode and a first conductor connected to the ablation electrode. The first conductor is configured to convey ablation energy to the ablation electrode. The probe also includes a second conductor which is connected at a junction to the first conductor so as to form a thermocouple at the junction. | 06-30-2011 |
20110160717 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. | 06-30-2011 |
20110166564 | Median Lobe Destruction Apparatus and Method - A system and associated method for altering or destroying tissues and anatomical or other structures in medical applications for the purpose of treating diseases or disorders. In one aspect, the system includes a device configured to deploy devices for altering the lobes of a prostate. | 07-07-2011 |
20110166565 | METHOD OF DELIVERING ENERGY TO A LUNG AIRWAY USING MARKERS - An energy delivery device for treating tissue regions in a body conduit, such as a lung airway, may utilize one or more markers, rings, bands, or other visual indicators along an outer surface of the device body. The one or more visual indicators facilitate guidance of the device to effectively and efficiently treat the tissue according to a predetermined axial treatment as well as measure extension of a distal portion of the device, tissue length, and/or treatment length. The predetermined axial treatment may be contiguous, overlapping, or intermittently spaced apart as determined by the marker spacing distance. | 07-07-2011 |
20110178515 | Electrosurgical Devices, Electrosurgical Unit and Methods of Use Thereof - A cartridge assembly to couple an electrosurgical device to treat tissue with an electrosurgical unit includes a cartridge member to operate with a power delivery apparatus of the electrosurgical unit and a fluid delivery apparatus of the electrosurgical unit. An electrosurgical unit includes a power delivery apparatus and a fluid delivery apparatus arranged to operate with a cartridge member to be located in a cartridge receptacle of the electrosurgical unit. An electrosurgical device includes a first electrode spaced alongside the second electrode, with each electrode having a blade shaped member. Each blade shaped member has opposing sides bounded by edges, with the edges having a medial edge and a lateral edge. At least one fluid outlet is adjacent each blade shaped member, and each fluid outlet is in fluid communication with a fluid passage. The device can be operated as either a bipolar device or a monopolar device and includes a switch to inhibit capacitive coupling to one of the electrodes when the other electrode is used in monopolar fashion. | 07-21-2011 |
20110184403 | System and Method for Monitoring Ablation Size - A system for monitoring ablation size is provided. The system includes a power source including a microprocessor for executing one or more control algorithms. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A plurality of spaced-apart electrodes is operably disposed along a length of the microwave antenna. The plurality of spaced-apart electrodes is disposed in electrical communication with one another and each of the plurality of spaced-apart electrodes has a threshold impedance associated therewith corresponding to the radius of the ablation zone. | 07-28-2011 |
20110184404 | LAPAROSCOPIC RADIOFREQUENCY SURGICAL DEVICE - Embodiments of the disclosed technology relate to a bipolar electrosurgical device for a laparoscopic environment, as well as methods for the use of such a device. Embodiments of the device may include a set of opposing jaws comprising at least one bipolar electrode pair disposed thereon, the set of jaws configured to deliver radiofrequency energy to a target tissue. Embodiments of the set of jaws, when closed, may have a diameter no greater than about 5 mm. The device may further include a shaft with a diameter that may be no greater than about 5 mm. Each of the jaws has a tissue-facing surface of each jaw that may include a complementary self-aligning configuration with respect to the longitudinal axis of the other jaw. Embodiments of the device may further include a pinless rotation assembly formed from rotatably cooperative features of the first jaw and the second jaw that connect the jaws together and enable the jaw set to pivot between an open position and a closed position. | 07-28-2011 |
20110190754 | Apparatus and Methods of Use for Treating Blood Vessels - An electrosurgical apparatus is provided. The electrosurgical apparatus includes a cannula insertable into a patient and positionable adjacent abnormal tissue. The electrosurgical apparatus includes a microwave antenna that includes a distal end having a radiating section receivable within the cannula and positionable within a patient adjacent abnormal tissue. The microwave antenna is adapted to connect to a source of electrosurgical energy for transmitting electrosurgical energy to the radiating section. A portion of the radiating section substantially encompasses a portion of the abnormal tissue and may be configured to apply pressure thereto. The microwave antenna is actuated to electrocautery treat tissue to reduce blood flow to the abnormal tissue. | 08-04-2011 |
20110190755 | PATIENT RETURN ELECTRODE DETECTION FOR ABLATION SYSTEM - A medical device is provided, including an ablation system with a generator, at least one ablation element, a patient return electrode, and a feedback system to verify and monitor the electrical connection between the generator and the patient return electrode, as well as contact of the patient return electrode with the patient. If an electrical connection is absent, intermittent, or of low quality, the medical device may also provide notice, a warning or alarm, and may also automatically cease ablation occurring at that time. | 08-04-2011 |
20110190756 | MAPPING AND ABLATION CATHETER SYSTEM - A mapping and ablation catheter system including a radio frequency ablation source having an output, a mapping device, a catheter, and two or more capacitive components. The catheter may include two or more catheter electrodes, wherein two of the two or more catheter electrodes may be electrically coupled to the mapping device. Each of the two or more catheter electrodes may be electrically coupled to a capacitive component, wherein each capacitive component may be electrically coupled to the output of the radio frequency ablation source such that energy delivered to each catheter electrode of the two or more catheter electrodes passes through the capacitive component. | 08-04-2011 |
20110190757 | ELECTROSURGICAL INSTRUMENT AND SYSTEM - An electrosurgical system includes an electrosurgical instrument and an electrosurgical generator, the instrument having a longitudinal axis and including at least first, second and third electrodes. The electrodes are spaced from each other by one or more insulating members therebetween, the spacing between the first and third electrodes being greater than that between the first and second electrodes. The electrosurgical generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform and has first second and third output connections connected to the first, second and third electrodes respectively of the electrosurgical instrument. The generator further includes a switching means, and a controller, the controller being such that when a cutting RF waveform is selected, the switching means directs the cutting RF waveform between the first and second output connections and hence the first and second electrodes. When a coagulating RF waveform is selected, the switching means directs the coagulating RF waveform between the first and third output connections and hence the first and third electrodes. | 08-04-2011 |
20110190758 | DEVICES, SYSTEMS AND METHODS FOR TREATING BENIGN PROSTATIC HYPERPLASIA AND OTHER CONDITIONS - Devices, systems and methods for compressing, cutting, incising, reconfiguring, remodeling, attaching, repositioning, supporting, dislocating or altering the composition of tissues or anatomical structures to alter their positional or force relationship to other tissues or anatomical structures. In some applications, the invention may be used to used to improve patency or fluid flow through a body lumen or cavity (e.g., to limit constriction of the urethra by an enlarged prostate gland). | 08-04-2011 |
20110190759 | GRAPHICAL USER INTERFACE FOR MONITORING AND CONTROLLING USE OF MEDICAL DEVICES - A device for treating a tissue region is supplied with a separate usage key card. The usage key card comprises a storage medium, which is formatted to contain an identification code unique to the usage key card. The usage key card is adapted to be read by a remote reader, to download the identification code for processing by a controller for the device. Processing of the identification code by the controller either enables or disables operation of the device according to prescribed criteria. A viewable image is generated on a display screen that changes in response to processing of the identification code. | 08-04-2011 |
20110190760 | INTEGRATED FIBER OPTIC RAMAN SPECTROSCOPY AND RADIO FREQUENCY ABLATION - Technologies are generally described for detecting diseased tissues through fiber optic based Raman spectroscopy, image acquisition, and/or RF induced hyperthermia treatment of the detected tissues in an integrated manner. A fiber optic bundle for carrying optical and RF signals for the spectroscopy, visual imaging, and RF ablation may also be used to detect a temperature of the treated tissue such that level and duration of the RF signal can be controlled for optimum results. A shielding configuration in the form of a coaxial waveguide of the fiber optic bundle may be used to guide and deliver the RF signal. Sources and detectors for the optical and RF signals may be integrated into an endoscopic probe containing the fiber optic bundle or be externally positioned. An integrated or remote controller may be employed to manage the optical imaging, spectroscopy, RF ablation, and thermal sensing operations. | 08-04-2011 |
20110196362 | Electrosurgical Devices With Choke Shorted to Biological Tissue - A device for directing energy to tissue includes a feedline and a radiating portion electrically coupled to the feedline. The radiating portion includes a distal radiating section and a proximal radiating section. The feedline includes an inner conductor, an outer conductor and a first dielectric material disposed therebetween. The device also includes a choke disposed around at least a portion of the feedline. The choke includes a second dielectric material disposed around at least a portion of the outer conductor, wherein the second dielectric material includes at least one opening defined therein, and an electrically-conductive member disposed in the at least one opening electrically coupled to the outer conductor, wherein the electrically-conductive member is configured to contact tissue. | 08-11-2011 |
20110196363 | METHOD AND SYSTEM FOR INVASIVE SKIN TREATMENT - A system and method for simultaneously heating a plurality of discrete skin volumes to a coagulation temperature. The system comprises an applicator containing an electrode having a plurality of spaced apart protruding conducting elements configured to contact the skin surface at a plurality of discrete locations. A controller applies a voltage to the electrode so as to simultaneously heat a plurality of skin volumes to a coagulation temperature when the applicator is applied to the skin surface. | 08-11-2011 |
20110196364 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument is provided for the treatment of tissue, the instrument comprising an instrument shaft ( | 08-11-2011 |
20110196365 | Systems, Apparatus, Methods, and Procedures for the Non-Invasive Treatment of Tissue Using Microwave Energy - A system applies, in a non-invasive manner, energy to a targeted tissue region employing a controlled source of energy, a multiple use applicator, and a single use, applicator-tissue interface carried by the applicator. The system can generate and apply energy in a controlled fashion to form a predefined pattern of lesions that provide therapeutic benefit, e.g., to moderate or interrupt function of the sweat glands in the underarm (axilla). | 08-11-2011 |
20110202050 | ELECTROSURGICAL SYSTEM - An electrosurgical system is provided for the treatment of tissue, the system comprising an electrosurgical generator ( | 08-18-2011 |
20110208176 | Systems and/or methods for using coherent electromagnetic waves to treat tumors and/or other growths - Certain example embodiments relate to techniques for using coherent electromagnetic (EM) waves to treat tumors and/or other growths. In certain example embodiments, a growth is imaged. Based on this image, a holographic plate is prepared. Coherent electromagnetic waves are then focused on the holographic plate so that a holographic image of the growth is formed on the actual growth. Magnetic particles may be injected at or proximate to the growth and captured in the EM field corresponding to the holographic image such that these injected particles are caused to congregate in and/or on the growth. In certain example embodiments, bombarding of the growth with the injected particles may help damage or destroy the tumor. In certain example embodiments, the particles, once attached to and/or embedded in the actual growth may be irradiated (e.g., using a microwave or other energy source) so as to further damage or destroy the growth. | 08-25-2011 |
20110208177 | Ablation Devices With Dual Operating Frequencies, Systems Including Same, and Methods of Adjusting Ablation Volume Using Same - An ablation device includes a feedline including an inner conductor having a distal end, an outer conductor coaxially disposed around the inner conductor, and a dielectric material disposed therebetween, an elongated electrically-conductive member longitudinally disposed at the distal end of the inner conductor and having a proximal end, a first balun structure disposed over a first portion of the outer conductor and positioned so that a distal end of the first balun structure is located at a first distance from the proximal end of the electrically-conductive member and a second balun structure disposed over a second portion of the outer conductor and positioned so that a distal end of the second balun structure is located at a second distance from the proximal end of the electrically-conductive member. | 08-25-2011 |
20110208178 | SYSTEMS AND METHODS FOR CERVICAL SEAL - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes. A sealing member is deployed in the cervical canal during ablation. | 08-25-2011 |
20110208179 | Patient Isolation in a Microwave-Radio Frequency Generator - The present disclosure provides an ablation system. The ablation system includes a generator having a first energy source that supplies a first type of energy to tissue. The generator also has a second energy source that supplies a second type of energy to tissue different from the first type of energy. A diplexer is also provided that is operable to multiplex the first type of energy from the first energy source and the second type of energy from the second energy source and provide an output to an ablation device. Additionally, the generator includes a first isolation device coupled to the first energy source and the diplexer, and a second isolation device coupled to the second energy source and the diplexer. | 08-25-2011 |
20110208180 | System and Method for Monitoring Ablation Size - A system for monitoring ablation size is provided. The system includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A series of thermal sensors is operably disposed adjacent a radiating section of the microwave antenna and extends proximally therefrom. The thermal sensors corresponding to a radius of the ablation zone, wherein each thermal sensor generates a voltage when a predetermined threshold tissue temperature is reached corresponding to the radius of the ablation zone. | 08-25-2011 |
20110208181 | METHODS AND SYSTEMS FOR RESTORING PATENCY - A method for maintaining patency in a duct or hollow vessel located within the body of a patient is described wherein the duct includes one or more obstructions. The method comprises the steps of introducing a device into the duct, the device comprising a catheter having a distal and a proximal end, wherein the distal end includes a distal tip portion and wherein the distal tip portion comprises at least one energy delivery member; locating the device within the duct at a position proximal to the obstruction; delivering energy to the duct and any surrounding tissue via the at least one energy delivery member for a specified time period, so that the obstruction is removed from the duct; and withdrawing the device from the duct. It is optional to subsequently place a device such as a stent at the therapy site in order to further maintain long term patency of the duct. It is also optional to apply a dilation force to the duct or hollow vessel after the energy delivery phase. Systems are also described for performing the methods of the disclosure. | 08-25-2011 |
20110208182 | PORTABLE RADIOFREQUENCY HYPERTHERMIA DEVICE WITH FLEXIBLE TREATMENT ELECTRODE FOR ELECTRIC FIELD CAPACITIVE COUPLED ENERGY TRANSFER - The present disclosure relates to a portable radiofrequency (RF) hyperthermia device having flexible applicator treatment electrodes for electric field capacitive coupled energy transfer, the device being useful for increasing the delivery of a systemically delivered drug at a localised target site. The portable RF device is suitable for use by a patient in their own home and the flexible applicator is a flexible, porous, light and easy to manipulate treatment electrode. The inventive device requires no specialist operator to ensure correct usage. | 08-25-2011 |
20110213351 | Self-Tuning Microwave Ablation Probe - An electromagnetic surgical ablation probe having a tunable helical antenna element is disclosed. The probe includes a coaxial feedline having an inner conductor coaxially disposed within a dielectric, and an outer conductor coaxially disposed around the dielectric. The inner conductor and dielectric extend distally beyond a distal end of the outer conductor. A helical antenna element is operably coupled to a distal end of the inner conductor. During use, the antenna may be tuned by changing at least one dimension of the helical antenna element. Embodiments are presented wherein a dimensions of the helical antenna element is changed by state change of a shape memory alloy, by a change in temperature, by activation of a piston by fluidic pressure, by linear motion of a conical tip, and by a manual screw-type adjustment. | 09-01-2011 |
20110213352 | Tunable Microwave Ablation Probe - An electromagnetic surgical ablation probe having a tunable helical antenna element is disclosed. The probe includes a coaxial feedline having an inner conductor coaxially disposed within a dielectric, and an outer conductor coaxially disposed around the dielectric. The inner conductor and dielectric extend distally beyond a distal end of the outer conductor. A helical antenna element is operably coupled to a distal end of the inner conductor. During use, the antenna may be tuned by changing at least one dimension of the helical antenna element. Embodiments are presented wherein a dimensions of the helical antenna element is changed by state change of a shape memory alloy, by a change in temperature, by activation of a piston by fluidic pressure, by linear motion of a conical tip, and by a manual screw-type adjustment. | 09-01-2011 |
20110213353 | Tissue Ablation System With Internal And External Radiation Sources - According to one embodiment of the present disclosure a microwave ablation system is disclosed. The microwave ablation system includes an energy source adapted to generate microwave energy and a plurality of energy delivery devices having a first energy delivery device configured to be inserted into tissue and to generate a non-directional ablation volume and a second energy delivery device configured to be positioned relative to the tissue and to generate a directional ablation volume. The system also includes a power dividing device having an input adapted to connect to the energy source and a plurality of outputs configured to be coupled to the plurality of energy delivery devices. The power dividing device is configured to selectively divide energy provided from the energy source between the plurality of energy delivery devices. | 09-01-2011 |
20110213354 | Enhanced Lossless Current Sense Circuit - A switched inductor system is provided that includes a switching regulator configured to receive an input signal and provide a voltage output, the switching regulator having one or more switches and one or more inductors. The system also includes a sensing circuit in parallel with the inductor. The sensing circuit includes a first RC circuit configured to detect an alternating current component of the voltage output and a second RC circuit configured to detect a direct current component of the voltage output. | 09-01-2011 |
20110213355 | Sensors On Patient Side for a Microwave Generator - An electrosurgical system is provided for use in electrosurgical procedures. The system includes a generator configured to provide electrosurgical energy to an instrument and a dual directional coupler coupled between the generator and the instrument and configured to sample the electrosurgical energy. The system also includes a sensor module configured to detect one or more properties of the sampled electrosurgical energy, a controller configured to receive the detected one or more properties and configured to control the output of the generator based on the detected one or more properties and an isolation device coupled between the sensor module and the controller. | 09-01-2011 |
20110213356 | METHODS AND SYSTEMS FOR SPINAL RADIO FREQUENCY NEUROTOMY - Methods and systems for spinal radio frequency neurotomy. Systems include needles capable of applying RF energy to target volumes within a patient. Such target volumes may contain target medial branch nerves along vertebrae or rami proximate the sacrum. Such procedures may be used to ablate or cauterize a portion of the targeted nerve, thus blocking the ability of the nerve to transmit signals to the central nervous system. Disclosed needles may be operable to asymmetrically, relative to a central longitudinal axis of the needle, apply RF energy. Such asymmetry facilitates procedures where a tip of the needle is placed proximate to anatomical structures for location verification. Then RF energy may be applied in a selectable direction relative to the needle tip to ablate volumes that include the targeted medial branch nerves or rami, thus denervating facet joints or the sacroiliac joint, respectively, to relieve pain in a patient. | 09-01-2011 |
20110213357 | RADIO-FREQUENCY TISSUE WELDER WITH POLYMER REINFORCEMENT - There are disclosed methods and apparatus for attachment and welding of tissue. In an embodiment, the apparatus includes an energy applicator configured to apply energy to generate heat within a target tissue to evaporate water to create dried tissue, and a thermally conductive material disposed adjacent the first tissue contacting surface or the second tissue contacting surface. The thermally conductive material may be configured for direct contact with the target tissue heated by the energy applicator. The thermally conductive material provides a high coefficient of thermal conductivity so as to evenly distribute heat within the targeted tissue area. Other embodiments are also disclosed. | 09-01-2011 |
20110213358 | Tissue-Treatment Methods - Polymer insulators and methods of using polymer insulators are disclosed. In some embodiments, a method includes separating a first portion of a subject's tissue from a second portion of the subject's tissue so that there is a space between the first and second portions of tissue. Deionized water, a buffered saline solution, liquid polymers, gels, particles, foams, and/or gases are disposed between the first and second portions of tissue, and the first portion of tissue is exposed to energy to treat the first portion of tissue. | 09-01-2011 |
20110218526 | VARIABLE-OUTPUT RADIOFREQUENCY ABLATION POWER SUPPLY - A medical system is provided, including an ablation system having at least one ablation element and a sensor, a generator operable to deliver radiofrequency ablation energy to the ablation element. A power supply defines a duty cycle and provides a voltage to the generator, and the power supply has a duty cycle modulator and an amplitude modulator. A processor is connected to the power supply, the generator, and the sensor. The processor obtains a feedback signal from the sensor, and adjusts the duty cycle modulator and the amplitude modulator according to the feedback signal. | 09-08-2011 |
20110218527 | Microwave Antenna Probe Having a Deployable Ground Plane - A surgical ablation system employing an ablation probe having a deployable ground plane is disclosed. The disclosed system includes a source of ablation energy and a source of electrosurgical energy, and a switching assembly configured to select between ablation and electrosurgical modes. The probe includes a cannula having a shaft slidably disposed therein. The shaft includes a deployable ground plane electrode assembly and a needle electrode disposed at distal end of the shaft. As the shaft is extended distally from the cannula, the ground plane electrode unfolds, and the needle electrode is exposed. Electrosurgical energy is applied to tissue via the needle electrode to facilitate the insertion thereof into tissue. Ablation energy is applied to tissue via the needle electrode to achieve the desired surgical outcome. The shaft, ground plane electrode and needle electrode are retracted into the cannula, and withdrawn from the surgical site. | 09-08-2011 |
20110218528 | ANATOMICAL STRUCTURE ACCESS AND PENETRATION - Methods, devices, and systems for accessing and penetrating an anatomical structure using suction force and energy ablation or mechanical penetration. In one aspect, a catheter is stabilized on the occlusion, a longitudinal member is advanced to penetrate the occlusion and recanalize the body vessel. In another aspect, a catheter is stabilized on the pericardium, ablation energy is delivered through a longitudinal member to create an opening on the pericardium. | 09-08-2011 |
20110224663 | CONTROL CIRCUITRY FOR A TISSUE ABLATION SYSTEM - A system for providing power suitable for electrosurgery from a self-contained direct current (DC) energy source according to embodiments of the present invention includes a voltage-affecting circuit having an input and an output, wherein the voltage-affecting circuit is configured to receive energy from the DC energy source at the input and provide boosted DC energy at the output, the boosted DC energy having a voltage greater than a voltage of the DC energy source, and an inverter operable to invert the boosted DC energy to alternating current (AC) energy. The inverter may include a bridge circuit including an arrangement of switches and having an input and an output, wherein the boosted DC energy is received at the bridge circuit input, and a bridge controller operable to control the arrangement of switches to selectively connect the bridge circuit input to the bridge circuit output. | 09-15-2011 |
20110224664 | MONITORING TISSUE TEMPERATURE WHILE USING AN IRRIGATED CATHETER - A method, consisting of modeling physical parameters representative of a probe in proximity to body tissue during an ablation procedure performed by the probe. The method also includes measuring a subgroup of the physical parameters during a non-ablation stage of the ablation procedure so as to generate measured non-ablative values of the subgroup, and measuring the subgroup of the physical parameters during an ablation stage of the ablation procedure so as to generate measured ablative values of the subgroup. In response to the modeling, the method includes generating calculated non-ablative values of the subgroup for the non-ablation stage, and generating calculated ablative values of the subgroup for the ablation stage. The method compares the measured non-ablative values with the calculated non-ablative values, and compares the measured ablative values with the calculated ablative values, so as generate optimal values of the physical parameters. | 09-15-2011 |
20110224665 | MODULAR STIMULATOR FOR TREATMENT OF BACK PAIN, IMPLANTABLE RF ABLATION SYSTEM AND METHODS OF USE - Apparatus and methods for treating back pain are provided, in which an implantable stimulator is configured to communicate with an external control system, the implantable stimulator providing a neuromuscular electrical stimulation therapy designed to cause muscle contraction to rehabilitate the muscle, restore neural drive and restore spinal stability; the implantable stimulator further including one or more of a number of additional therapeutic modalities, including a module that provides analgesic stimulation; a module that monitors muscle performance and adjusts the muscle stimulation regime; and/or a module that provides longer term pain relief by selectively and repeatedly ablating nerve fibers. In an alternative embodiment, a standalone implantable RF ablation system is described. | 09-15-2011 |
20110224666 | METHOD OF SURGICAL PERFORATION VIA THE DELIVERY OF ENERGY - Apparatuses and methods for the perforation of heart tissue of a patient when an inferior approach to the heart is contraindicated are disclosed. The method includes using a superior approach to introduce the apparatus, positioning the apparatus at a tissue location and delivering a controlled amount of non-mechanical energy to the tissue to create a perforation. For example, a method of surgical perforation via the delivery of electrical, radiant or thermal energy may include: introducing an apparatus comprising an energy delivery device into a patient's heart via the patient's superior vena cava; positioning the energy delivery device at a first location adjacent material to be perforated; and perforating the material by delivering energy via the energy delivery device; wherein the energy is selected from the group consisting of electrical energy, radiant energy and thermal energy. | 09-15-2011 |
20110230874 | ABLATION METHOD - A method of ablating a uterine fibroid using a particular trocar is disclosed. The trocar comprises a plurality of ablation stylets mounted for movement from within the trocar to positions extending from the trocar. The trocar is adjustable to assume a plurality of configurations, each of the configurations having the stylets extended to a different extent from the trocar. A region to be ablated is imaged. The region may correspond to all or a portion of a uterine fibroid. The size of the region to be ablated is noted. The size of the region to be ablated is compared to a matrix of known ablation regions, each of the known ablation regions being associated with one of the configurations of the particular trocar, and each of the known ablation regions being associated with a position of the trocar relative to the known ablation region. The region to be ablated is associated with a most nearly matching known ablation region by comparison of the region to be ablated to the known ablation regions. A trocar of the design of the particular trocar is inserted into the uterine fibroid at a position, with respect to the region to be ablated, which more closely matches the position of the particular trocar with respect to the known ablation region. The stylets are deployed from the trocar to an extent corresponding to the configuration associated with the most nearly matching known ablation region. | 09-22-2011 |
20110230875 | ARTICULABLE ELECTROSURGICAL INSTRUMENT WITH A STABILIZABLE ARTICULATION ACTUATOR - Embodiments of the technology provide an articulable electrosurgical instrument and methods of performing electrosurgery with an articulating capability. The electrosurgical instrument includes an elongated shaft having an end effector associated with a distal end thereof that is able to deliver energy to a target tissue site. An articulable joint is positioned between that shaft and the end effector. Articulation of the articulable joint is controlled by a stabilizable articulation actuator, which may include a rotatably stabilizable disk residing within a well. The end effector may take the form of forceps including an upper and a lower jaw; the jaws are configured to grasp target tissue and to deliver energy, such as radiofrequency energy. In some of these instruments, the end effector is adapted to seal tissue by the application of radiofrequency energy, and then to cut through the sealed tissue portion. | 09-22-2011 |
20110238053 | Microwave Surface Coagulator with Retractable Blade - An ablation instrument having an ergonomic handle that includes an actuator adapted to selectively extend and retract a blade that is pivotably mounted within an aperture assembly coupled to the housing by a shaft. The shaft extends distally from the handle and includes a coaxial feedline, a wire conduit disposed along a longitudinal axis of the shaft, and a pull wire disposed within the wire conduit and having a proximal and a distal end, wherein a proximal end of the pull wire is operably coupled to the actuator. The aperture assembly is coupled to a distal end of the shaft and includes a reflector having a closed upper portion, and an open lower portion from which the blade may be extended for use. Also disclosed is an ablation system that includes the above-described ablation instrument, a source of ablation energy, and optionally, a source of coolant for cooling the shaft and aperture assembly. | 09-29-2011 |
20110238054 | Ablation Devices with Adjustable Radiating Section Lengths, Electrosurgical Systems Including Same, and Methods of Adjusting Ablation Fields Using Same - An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. | 09-29-2011 |
20110238055 | Ablation Devices with Adjustable Radiating Section Lengths, Electrosurgical Systems Including Same, and Methods of Adjusting Ablation Fields Using Same - An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feed line, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. The length adjustment member includes a first pivot element and a first tensioning element coupled to the first pivot element. | 09-29-2011 |
20110238056 | IMPEDANCE MEDIATED CONTROL OF POWER DELIVERY FOR ELECTROSURGERY - A method of controlling electrosurgical power delivery based on a comparison of sensed tissue impedance to various impedance threshold values is provided. Energy is delivered to tissue in a sealing cycle as a series of pulses. An initial pulse has a profile with a preset energy starting value that increases at a ramping rate to a preset end value. Sensed impedance data are monitored throughout each pulse and compared to each of an impedance threshold value for RF setpoint, an impedance threshold value for cumulative time, and an impedance threshold value for energy cutback. Based on sensed impedance during a pulse, the profile of a subsequent pulse can be modified. In the event of a high impedance event that reflects low tissue presence, energy may be cutback. A sealing cycle is stopped when a cumulative amount of time with an impedance value over the impedance cumulative time threshold value reaches a sealing cycle duration limit. | 09-29-2011 |
20110238057 | Dual Bracketed Energy Delivery Probe and Method of Use - An energy delivery probe and method of using the energy delivery probe to treat a patient is provided herein. The energy delivery probe has at least one probe body having a longitudinal axis and at least a first trocar and a second trocar. At least a portion of each trocar is disposed with the at least one probe body. The distance between the first trocar and the second trocar is adjustable between a first position and a second position. Each of the deployed electrodes has an energy delivery surface of a sufficient size to create a volumetric ablation zone between the deployed electrodes. The energy delivery probe is connected to an energy source. At least one cable couples the energy delivery probe to the energy source. | 09-29-2011 |
20110238058 | INDIFFERENT ELECTRODE PAD SYSTEMS AND METHODS FOR TISSUE ABLATION - Systems and methods for transmitting energy through patient tissue involve the use of an indifferent pad assembly in conjunction with an ablation probe. Systems may include an electrical surgical unit having a power output connector, a first power return connector, and a second power return connector. Systems may also include an ablation probe coupleable with the power output connector of the electrical surgical unit, and an indifferent pad assembly having a conductive mechanism coupled with an electrical and thermal insulator mechanism, and a wire assembly coupled with the conductive mechanism. The wire assembly can include a first connector coupleable with the first power return connector of the electrical surgical unit, and a second connector coupleable with the second power return connector of the electrical surgical unit. | 09-29-2011 |
20110238059 | PROTECTIVE SYSTEMS AND METHODS FOR USE DURING ABLATION PROCEDURES - Systems and methods provide protection for patient tissue during radiofrequency ablation treatments. Exemplary techniques involve placing a conductive or semiconductive pad assembly near a target tissue, and administering electrical current through the target tissue while protecting adjacent tissue with the pad assembly. The pad assembly may include a material having an electrical conductivity value that is equal to or greater than the electrical conductivity value of the target tissue. | 09-29-2011 |
20110238060 | MICROWAVE SURGICAL DEVICE - A medical instrument or device used to decrease blood loss during surgery and/or other medical procedures. The device includes a microwave antenna housed in a handset (or laparoscopic probe) that is placed in close proximity to the tissue of interest. The device runs in the microwave spectrum and receives power from a from a microwave generator. When turned on (triggered), the device delivers microwave energy to tissue, providing a cutting or cautery effect. | 09-29-2011 |
20110238061 | MICROWAVE DEVICE FOR VASCULAR ABLATION - A method and system delivers microwave energy to a vessel, such as a vein for the treatment of varicose veins, in a controllable heating pattern and to provide relatively fast heating and ablation of the vessel. The method and system comprises a microwave delivery device for heating the vessel, and a microwave power source for supplying microwave power to the delivery device. The method and system may also include a cooling system, a temperature monitoring, feedback and control system, an ultrasound or other imaging device, and/or a device for assuring generally uniform energy delivery in the vessel. | 09-29-2011 |
20110257646 | Method for treating fecal incontinence - A sphincter tissue region is treated using a support structure sized for advancement into the anal canal. At least one electrode is carried by the structure. A mechanism is coupled to the electrode to move the electrode between a first position retracted in the support structure and a second position extended from the support structure through surface tissue to penetrate a subsurface tissue region at or near a sphincter in the anal canal. A cable is coupled to the electrode to conduct energy for application by the electrode to form a lesion in the subsurface tissue region. | 10-20-2011 |
20110257647 | SYSTEMS, ASSEMBLIES, AND METHODS FOR TREATING A BRONCHIAL TREE - Systems, assemblies, and methods to treat pulmonary diseases are used to decrease nervous system input to distal regions of the bronchial tree within the lungs. Treatment systems damage nerve tissue to temporarily or permanently decrease nervous system input. The treatment systems are capable of heating nerve tissue, cooling the nerve tissue, delivering a flowable substance that cause trauma to the nerve tissue, puncturing the nerve tissue, tearing the nerve tissue, cutting the nerve tissue, applying pressure to the nerve tissue, applying ultrasound to the nerve tissue, applying ionizing radiation to the nerve tissue, disrupting cell membranes of nerve tissue with electrical energy, or delivering long acting nerve blocking chemicals to the nerve tissue. | 10-20-2011 |
20110257648 | ABLATION CATHETERS - The present invention relates generally to multifunctional catheters for performing ablation procedures, and more particularly to ablation catheters utilized in the treatment of atrial fibrillation and other cardiac disorders. The present invention eliminates many of the problems associated with previous ablation catheters by providing an ablation treatment not dependent upon continuous lesions. | 10-20-2011 |
20110264085 | BALLOON CATHETER SYSTEM - It is an object of the present invention to provide a radiofrequency thermal balloon catheter system capable of precisely predicting the surface temperature of a balloon which directly heats a target tissue without allowing a temperature sensor to directly contact with a balloon membrane. In the radiofrequency thermal balloon catheter system, a vibrational wave W is applied to an inside of the balloon | 10-27-2011 |
20110264086 | RENAL ARTERY DENERVATION APPARATUS EMPLOYING HELICAL SHAPING ARRANGEMENT - Devices, systems, and methods provide for renal sympathetic nerve activity modification and termination. Apparatuses are configured for intravascular delivery of a denervation therapy to a renal artery of a patient, and preferably create a lesion or lesions that define a pattern that completes at least one revolution of the renal artery. Various denervation therapy elements may be employed, including a cryotherapy arrangement, a drug eluting arrangement, an RF ablation arrangement, an ultrasonic ablation catheter, a laser ablation catheter, a microwave ablation catheter, or a combination of these therapy elements. | 10-27-2011 |
20110264087 | METHOD AND DEVICES FOR CARDIAC RADIOFREQUENCY CATHETER ABLATION - Embodiments of the invention comprise methods and devices that allow quantification of blood convective cooling at the cardiac RF catheter ablation site and allow for prediction of lesion size and/or computation of RF energy parameters and characteristics. | 10-27-2011 |
20110270239 | TRANSSEPTAL CROSSING DEVICE - A medical device for crossing a tissue wall and methods of use thereof are provided. The device may include a flexible shaft defining a proximal portion, a distal portion, and a lumen extending therebetween to apply a vacuum to at least a portion of the tissue wall; and a tissue penetration element movably positioned within the shaft. The device may further include one or more anchors, one or more expandable elements disposed thereon, an image capture device coupled to a portion thereof, an expandable array, and/or one or more electrically conductive segments. | 11-03-2011 |
20110270240 | System and Method of Deploying an Antenna Assembly - A method of deploying an antenna of an ablation device includes the step of placing an introducing member relative to tissue. The introducing member is disposed on a distal end of a handle member. The method also includes the steps of advancing an antenna distally through the handle member and at least partially through the introducer and rotating the handle member about the longitudinal axis thereof relative to the antenna. The method also includes the step of moving the handle member proximally along the longitudinal axis thereof to retract the introducer proximally relative to the antenna such that the antenna is at least partially deployed relative to the introducer to treat tissue. | 11-03-2011 |
20110270241 | VISUAL FEEDBACK IMPLEMENTS FOR ELECTROMAGNETIC ENERGY OUTPUT DEVICES - An electromagnetic energy output device in the form of laser handpiece and a trunk assembly is disclosed. The electromagnetic energy output device includes a digital camera and electromagnetic energy waveguides for emitting illumination or excitation light energy to enhance user viewability of a target surface and signal analysis and to receive electromagnetic energy such as return excitation light. An image acquisition fitting routes images acquired at or in a vicinity of the distal end of the electromagnetic energy output device. The image acquisition fitting can include an attachable or clip-on element or set of elements. In other implementations, the image acquisition fitting may be securable, in whole or in part, within an interior of the electromagnetic energy output device. | 11-03-2011 |
20110276045 | ELECTROSURGICAL INSTRUMENT AND METHOD OF USE - A particular embodiment of the invention provides an electrosurgical working end for performing high strength welding of tissue comprising a body having a tissue contacting energy delivery surface. The body includes pixel portions and non-pixel portions distributed within the tissue contacting surface. The pixel portions comprise a positive temperature coefficient of resistance (PTCR) material with at least one pixel portion configured to switch Rf current on and off in the at least one pixel portion responsive to tissue temperature adjacent the at least one pixel portion. The pixel portions can be configured to be coupled to an Rf current source such as an Rf generator. The pixelated energy delivery surfaces are capable of highly localized modulation of Rf energy application to the engaged tissue to create high strength tissue welds. | 11-10-2011 |
20110282336 | Electrosurgical Devices with Balun Structure for Air Exposure of Antenna Radiating Section and Method of Directing Energy to Tissue Using Same - An energy applicator for directing energy to tissue includes a feedline having an inner conductor, an outer conductor and a dielectric material disposed therebetween, and an antenna assembly having a radiating section operably coupled to the feedline. The energy applicator also includes a first balun structure configured to substantially confine energy to the radiating section when the energy applicator is energized and disposed in tissue, and a second balun structure configured to substantially prevent energy emitted from the radiating section from propagating proximal to the second balun structure along the feedline when the energy applicator is energized but not disposed in tissue. | 11-17-2011 |
20110282337 | Instrument for Debriding Fistula and Applying Therapeutic Cells - A treatment system comprises an outer sheath and an end effector. The end effector has a plurality of cutting features, at least a portion of which are configured to debride a tissue surface when the end effector is actuated. The cutting features may also be configured to harvest tissue. A medical fluid reservoir is in fluid communication with the end effector, such that the end effector may deliver a medical fluid to a target site such as a fistula. The medical fluid may include harvested tissue cells and a scaffold material. A vacuum cannula may be positioned coaxially within the interior cavity of the end effector, and an RF probe may be positioned co-axially within the interior cavity of the vacuum cannula. The vacuum cannula and RF probe may be used together to seal a fistula in which medical fluid has been dispensed. | 11-17-2011 |
20110282338 | APPARATUS FOR MANUALLY MANIPULATING HOLLOW ORGANS - An apparatus for mechanically manipulating hollow organs within the body of a subject, or an organ manipulation apparatus, includes a manipulation section. The manipulation section may include a substantially two-dimensional element, which may have a width that exceeds a distance across a portion of the interior of a hollow organ within which the manipulation section is to be positioned. The manipulation section is configured to manipulate at least a portion of a hollow organ from within, which may modify at least one of a shape, orientation, or location of at least part of the hollow organ. Methods for manipulating hollow organs are also disclosed, as are operating techniques, such as left atrial ablation, in which the shapes, orientations, and/or locations of hollow organs are manipulated to move the hollow organs away from the site of the medical procedure, reducing the potential for damage to the hollow organs. | 11-17-2011 |
20110282339 | SURGICAL INSTRUMENTS AND END EFFECTORS THEREFOR - Various forms of surgical instruments are disclosed. In various embodiments, an end effector having operable and closable jaws is attached to a distal end of an elongate shaft such that portions of the jaws are axially offset from the elongate shaft. Other jaw embodiments are coupled to an actuation arrangement that permits portions of the jaws to be moved out of axial alignment with the elongate shaft. Other jaw embodiments are configured to facilitate tissue dissection. Electrosurgical instruments are also disclosed. One embodiment employs a flexible electrode that is conformable to tissue. | 11-17-2011 |
20110282340 | TISSUE ABLATION SYSTEMS AND METHODS - Tissue is treated using a radiofrequency power supply connected to an applicator having a chamber filled with an electrically non-conductive gas surrounded by a thin dielectric wall. A radiofrequency voltage is applied at a level sufficient to ionize the gas into a plasma and to capacitively couple the ionized plasma with the tissue to deliver radiofrequency current to ablate or otherwise treat the tissue. | 11-17-2011 |
20110282341 | BRAZED ELECTROSURGICAL DEVICE - Disclosed herein is a distal end electrode assembly for use in connection with electrosurgical devices, particularly those adapted for the modification, sculpting, resection, removal, or vaporization of tissue, configured for coagulation, cauterization or hemostasis purposes, or utilized for thermal treatment of normal and tumorous tissues. In the context of the present invention, mechanical fastening means, epoxies and other high-temperature adhesives connecting electrode(s) to insulator(s) are replaced with brazed joints to yield electrosurgical devices capable of safely and reliably operating at high power densities and elevated temperatures without thermal failure of the bonds between the electrode and the insulator. The use of brazed joints further permits the construction of miniaturized, compact electrosurgical devices, of both monopolar and bipolar configurations, having utility in a number of divergent fields, from arthroscopy to otolaryngology to oncology, and applicable to both laparoscopic and open surgery techniques. Thus, active electrodes and electrosurgical devices of the present invention maximize efficiency, safety and reliability while minimizing manufacturing cost and device profile. | 11-17-2011 |
20110282342 | IRRIGATED FINNED ABLATION HEAD - An irrigated finned ablation head that provides enhanced cooling. The irrigated finned ablation head comprises a plurality of radial fins that are distributed about a central axis and that extend axially from a common base. The plurality of fins are arranged to define a central passageway along the central axis, as well as a plurality of slots therebetween, the slots extending in an axial direction along the irrigated finned ablation head. In one embodiment, the central passageway extends through the irrigated finned ablation head, defining an opening at the distal extremity, with the slots extending from the base to the opening. In another embodiment, the irrigated finned ablation head includes a cap portion at a distal portion that is common to all the radial fins, so that the slots are terminated at the distal portion of the irrigated finned ablation head. The radial flow distribution along the central axis can be tailored by the configuration of the central passageway. | 11-17-2011 |
20110288539 | SYMMETRIC SWITCHING ELECTRODE METHOD AND RELATED SYSTEM - Electrosurgical system and related methods that include: producing energy by a generator of an electrosurgical controller, the generator comprises a first terminal coupled to a first electrode of an electrosurgical wand, and the generator comprises a second terminal coupled to a second electrode of the electrosurgical wand; forming, responsive to the energy, a plasma proximate to the first electrode, and acting as a current return by the second electrode; reducing energy output of the generator such that the plasma proximate the first electrode is extinguished, the reducing energy output during periods of time when the electrosurgical controller is commanded to produce energy; producing energy from the generator with the first terminal coupled to the first electrode and the second terminal coupled to the second electrode; and forming, responsive to the energy, a plasma proximate to the second electrode, and acting as a current return by the first electrode. | 11-24-2011 |
20110288540 | SYSTEMS AND METHODS FOR TISSUE ABLATION - Systems and methods for tissue ablation. Systems include needles with deployable filaments capable of producing asymmetrical offset lesions at target volumes, which may include a target nerve. Ablation of at least a portion of the target nerve may inhibit the ability of the nerve to transmit signals, such as pain signals, to the central nervous system. The offset lesion may facilitate procedures by directing energy towards the target nerve and away from collateral structures. Example anatomical structures include lumbar, thoracic, and cervical medial branch nerves and rami and the sacroiliac joint. | 11-24-2011 |
20110288541 | METHOD OF PERCUTANEOUS LOCALIZED OR FOCAL TREATMENT OF PROSTATE LESIONS USING RADIO FREQUENCY - The present invention is related to a method of realizing percutaneous (transperineal) ablation of prostate tumor regions, using a radio frequency based coiled device. A bipolar electrode assembly comprising an outer helical electrode and an inner electrode arranged concentric with the outer helical electrode, wherein prior to applying radio frequency energy, at least the outer helical electrode is inserted percutaneously into the prostate. An image of the prostate and of the outer helical electrode as inserted is acquired, such that the outer helical electrode is visualized on the image. A graphical representation of a target position of the bipolar electrode assembly is superposed on the image. | 11-24-2011 |
20110288542 | ELECTROSURGICAL SYSTEM - An electrosurgical system includes an electrosurgical generator ( | 11-24-2011 |
20110295245 | Flow Rate Verification Monitor for Fluid-Cooled Microwave Ablation Probe - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from an energy source to tissue and a coolant source operably coupled to the energy source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the energy source and a piezoelectric transducer operably coupled to the fluid path to detect a force of fluid flow through the fluid path. The piezoelectric transducer is configured to generate a signal based on the detected force of fluid through the fluid path. The controller is configured to control the energy source output based on the generated signal. | 12-01-2011 |
20110295246 | System and Method for Chemically Cooling an Ablation Antenna - A method of performing an ablation procedure includes the steps of inserting an antenna assembly into tissue and supplying energy thereto for application to tissue. The method also includes the step of causing contact between a first material and at least one other material disposed within the antenna assembly to thermally regulate the antenna assembly. According to another embodiment, an ablation system includes an energy delivery assembly. A first chamber is defined within the energy delivery assembly and is configured to hold a first chemical. Another chamber is defined within the energy delivery assembly and is configured to hold at least one other chemical. The first chamber and the other chamber are configured to selectively and fluidly communicate with each other to cause contact between the first chemical and the at least one other chemical to cause an endothermic reaction and/or an exothermic reaction. | 12-01-2011 |
20110295247 | SYSTEM AND METHOD FOR AUTOMATED MINIMALLY INVASIVE THERAPY USING RADIOMETRY - Systems and methods are described for automating aspects of minimally invasive therapeutic treatment of patients. In one embodiment a robotic catheter system may comprise a controller including a master input device; and an electromechanically steerable elongate instrument having a proximal interface portion and a distal portion, the proximal interface portion being configured to be operatively coupled to an electromechanical instrument driver in communication with the controller, the distal portion being configured to be interactively navigated adjacent internal tissue structures of a patient's body in response to signals from the controller; wherein the distal portion of the elongate instrument comprises an antenna operatively coupled to the controller, and wherein the controller is configured to determine the temperature of structures adjacent to the distal portion of the elongate instrument utilizing radiometry analysis. | 12-01-2011 |
20110295248 | SYSTEM AND METHOD FOR AUTOMATED MINIMALLY INVASIVE INSTRUMENT COMMAND - In one embodiment a system may comprise a controller including a master input device; and an electromechanically steerable elongate instrument having proximal interface and portions, the proximal interface portion being configured to be operatively coupled to an electromechanical instrument driver in communication with the controller, the distal portion being configured to be interactively navigated adjacent internal tissue structures of a patient's body in response to signals from the controller; wherein the controller is operatively coupled to a treatment interactivity variable sensor selected from the group consisting of: a cardiac electrogram electrode, an RF generator power output sensor, an instrument distal portion impedance sensor, and an instrument distal portion force sensor; and wherein the controller is configured to affect the operation of the electromechanically steerable elongate catheter by automatically executing an instrument movement or treatment command based upon changes in information received from the treatment interactivity variable sensor. | 12-01-2011 |
20110301587 | SYSTEM AND METHOD FOR PULMONARY TREATMENT - An apparatus and method for pulmonary treatment by denervation is provided. The apparatus includes an elongate member configured for insertion into the trachea to a position adjacent a pulmonary plexus. The apparatus further includes at least one energy delivery element disposed on the elongate member. The energy delivery element is positionable to target at least one nerve in the tracheal wall when the elongate member is positioned in the trachea. Energy from the energy delivery element is delivered to the at least one nerve to treat pulmonary symptoms, conditions, and/or diseases, such as asthma, COPD, obstructive lung diseases, or other pulmonary diseases. | 12-08-2011 |
20110301588 | RADIATION APPLICATOR - This invention provides an elongate microwave radiator for insertion into a living body to treat tissue at a predetermined operating frequency. The radiator defines a monopole antenna at its tip. The monopole antenna includes a dielectric material surrounding the monopole. The dielectric material is configured to act as a resonator at the predetermined operating frequency, and encompasses generally the whole of a near-field radiation emitted by the monopole. In an illustrative embodiment, the dielectric material extends from the antenna a distance determined in accordance with the wavelength of the radiation in the dielectric. | 12-08-2011 |
20110306960 | RF SURGICAL APPARATUS - An RF surgical apparatus and method for operating such an apparatus. The RF surgical apparatus comprises at least two RF generators and at least one neutral electrode output for one neutral electrode. At least two outputs for connecting RF surgical instruments for applying treatment currents to the surgical instruments are provided. Furthermore, a switching device is provided. To enable a simultaneous operation of several RF surgical apparatuses, and not generate any neuromuscular stimulation, a separate generator is provided for each RF surgical instrument and a single neutral electrode is provided for all of the instruments and generators. The switching device is adapted to be arranged in a controlling connection with the RF generators such that the RF generators will never generate, and output to the instruments, any treatment currents at the same time (that is, they output only sequentially). | 12-15-2011 |
20110306961 | Reinforced High Strength Microwave Antenna - High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity. | 12-15-2011 |
20110313412 | TISSUE INTERFACE SYSTEM AND METHOD - An applicator-tissue interface is disclosed for use in connection with medical device treatment applicators. The interface provides a cover to protect applicator components against contamination and may be disposable or reusable. Also included are tissue acquisition features including a tissue receiving chamber defined by a bio-barrier with vacuum ports or channels for tissue acquisition. Vacuum balancing is provided to prevent contamination on the applicator side of the bio-barrier. Locking mechanisms are disclosed for ensuring secure attachment between the interface and applicator. Methods of using the applicator-tissue interface in connection with an applicator are also disclosed. | 12-22-2011 |
20110313413 | ABLATION DEVICE WITH SENSOR - An electrosurgical device having a distal tip for creating a lesion on tissue includes a first electrode and a second electrode that are parallel for the delivery of RF energy to tissue. A sensor electrode is provided parallel to and spaced away from the first electrode a different distance than the second electrode. When the sensor electrode and at least one of the first and second electrodes are in contact with tissue, The electrosurgical device can perform at least one of the following: ablating tissue, and sensing at least one selected from the group of voltage, tissue impedance, electrical conduction, conduction time, conduction velocity, and signal phase angle. | 12-22-2011 |
20110319880 | Microwave Ground Plane Antenna Probe - An ablation probe having a ground plane is disclosed. The disclosed probe includes an inner conductor coaxially disposed within an outer shield. One or more ground plane(s) oriented substantially transversely to a longitudinal axis of the probe are joined to the outer shield. One or more dielectric(s) may be disposed around the inner conductor or upon a surface of a ground plane. The probe may include a rigid or flexible catheter disposed around the outer shield to define a conduit therebetween to enable the delivery of pressurized fluid to an inflatable balloon disposed around a ground plane. A semicylindrical housing having a circumferential surface and a distal surface may be included. A proximal edge of the circumferential surface of the semicylindrical housing may be joined to a circumferential edge of a ground plane. An opening may be defined in the distal surface of the semicylindrical housing, through which the inner conductor may extend distally. | 12-29-2011 |
20110319881 | Current-Fed Push-Pull Converter with Passive Voltage Clamp - An electrosurgical generator configured to output radio frequency (RF) energy having a current-source type behavior is provided. The generator has a buck converter having a voltage source, at least one switch and an inductor. The generator also has an RF stage configured to output the RF energy. A sensor circuit configured to measure at least one parameter of the RF energy and a controller configured to receive the measured parameter from the sensor circuit and control the output of the electrosurgical generator based on the measured parameter may also be provided in the electrosurgical generator. | 12-29-2011 |
20110319882 | Low Power Tissue Sealing Device and Method - A surgical system and associated method for sealing the passageway of a fluid-carrying vessel with a diameter up to 5 millimeters comprises an electrosurgical generator capable of delivering electrosurgical power, a surgical instrument electrically connected to the electrosurgical generator and adapted to transfer electrosurgical power from the electrosurgical generator to a pair of end effectors disposed at a distal end of the surgical instrument. The system also includes a power control circuit for controlling the delivery of radio frequency energy to the vessel through the end effectors, wherein the delivery of the radio frequency energy to the vessel comprises, raising the output current to a range below 1.75 Amperes RMS and the output voltage to a range below 135 Volts RMS. Radio frequency energy is applied to the vessel for a period of time while the power is held approximately constant. The flow of radio frequency energy is terminated when the impedance of the vessel being sealed reaches a predetermined level. | 12-29-2011 |
20110319883 | Method And Device For Operating An RF Surgical Assembly - A method and device for operating an RF surgical assembly for the RF surgical removal of pathological tissue in hollow organs of a patient wherein the RF surgical assembly includes an RF surgical device having an RF generator for generating an RF current and a bipolar loop having two mutually insulated loop sections which can be brought electrically in contact with the tissue and wherein the RF generator has a first and an antipolar second output. | 12-29-2011 |
20120004650 | Adjustable Tuning of a Dielectrically Loaded Loop Antenna - A microwave antenna assembly is disclosed. The antenna assembly includes an elongated member defining a longitudinal axis and having proximal and distal ends. The antenna assembly also includes an outer conductor and an inner conductor each disposed within the elongated member and extending along the longitudinal axis. A portion of the inner conductor is deployable relative to the outer conductor such that the antenna assembly may transition from a first configuration to a second configuration. The antenna assembly also includes an expandable sheath at least partially disposed about a distal portion of the inner conductor and defining at one or more lumens configured to couple to a supply of dielectric material used to regulate the expansion of the expandable sheath. | 01-05-2012 |
20120004651 | Microwave Antenna Having a Reactively-Loaded Loop Configuration - A microwave ablation system is provided. The microwave ablation system includes a power source. A microwave antenna is adapted to connect to the power source via a coaxial cable feed including an inner conductor defining a portion of a radiating section of the microwave antenna, an outer conductor and dielectric shielding. The inner conductor loops back around and toward the outer conductor of the coaxial cable feed such that a distal end of the inner conductor is operably disposed adjacent the dielectric shielding. The inner conductor includes one or more reactive components disposed thereon forming a reactively-loaded loop configuration configured to maximize delivery of microwave energy from the power source to tissue such that a desired effect to tissue is achieved. | 01-05-2012 |
20120004652 | Inductive Powered Surgical Device with Wireless Control - A system and method for wirelessly powering an electrosurgical device using a generator to generate a radio frequency (RF) energy field. A switch on the electrosurgical device sends a wireless signal to the generator, where the generator allows a current to pass through an inductive coil to generate the RF energy field, The RF energy field induces a current to flow across an inductive coil within the electrosurgical device. The current flow is then processed though a RF conditioning circuit and outputted to the end effector assembly of the device. | 01-05-2012 |
20120004653 | BIPOLAR FORCEPS - The limbs of a bipolar forceps for RF coagulation are produced from a bimetal material, wherein an outer layer ( | 01-05-2012 |
20120004654 | Methods and Systems for Determining Physiologic Characteristics for Treatment of the Esophagus - A method and apparatus for treating abnormal mucosa in the esophagus is disclosed, such that the depth of the treated tissue is controlled. The depth of ablation is controlled by monitoring the tissue impedance and/or the tissue temperature. A desired ablation depth is also achieved by controlling the energy density or power density, and the amount of time required for energy delivery. A method and apparatus is disclosed for measuring an inner diameter of a body lumen, where a balloon is inflated inside the body lumen at a fixed pressure. | 01-05-2012 |
20120010607 | ENERGY BASED DEVICES AND METHODS FOR TREATMENT OF PATENT FORAMEN OVALE - Methods, devices and systems for treating patent foramen ovale (PFO) involve advancing a catheter device to a position in a heart for treating a PFO, bringing tissues adjacent the PFO at least partially together, and applying energy to the tissues to substantially close the PFO acutely. Catheter devices generally include an elongate catheter body, at least one tissue apposition member at or near the distal end for bringing the tissues together, and at least one energy transmission member at or near the distal end for applying energy to the tissues. In some embodiments, the tissue apposition member(s) also act as the energy transmission member(s). Applied energy may be monopolar or bipolar radiofrequency energy or any other suitable energy, such as laser, microwave, ultrasound, resistive heating or the like. | 01-12-2012 |
20120010608 | ENERGY BASED DEVICES AND METHODS FOR TREATMENT OF PATENT FORAMEN OVALE - Methods and apparatus for treatment of patent foramen ovale (PFO) provide for applying energy to tissues adjacent the PFO with a catheter device to substantially close the PFO acutely. Apparatus generally includes a catheter device having at least one energy transmission member at or near its distal end configured to apply energy to PFO tissues to acutely, substantially close the PFO. Applied energy may be monopolar or bipolar radiofrequency energy or any other suitable energy, such as laser, microwave, ultrasound, resistive heating or the like. Some embodiments of a catheter device fuirther include one or more tissue apposition members near the distal end for helping bring PFO tissues together, such as a PFO covering member, a vacuum applying member and/or the like. PFO closure via energy-based approaches of the invention may help prevent stroke, treat migraine headache, and possibly treat or prevent other medical conditions. | 01-12-2012 |
20120010609 | Systems and Methods for Creating an Effect Using Microwave Energy to Specified Tissue - Systems, methods and devices for creating an effect using microwave energy to specified tissue are disclosed. A system for the application of microwave energy to a tissue includes a signal generator adapted to generate a microwave signal having predetermined characteristics, an applicator connected to the generator and adapted to apply microwave energy to tissue. The applicator includes one or more microwave antennas and a tissue interface, a vacuum source connected to the tissue interface, a cooling source connected to the tissue interface, and a controller adapted to control the signal generator, the vacuum source, and the coolant source. The tissue includes a first layer and a second layer, the second layer below the first layer. The controller is configured so that the system delivers energy such that a peak power loss density profile is created in the second layer. | 01-12-2012 |
20120016356 | APPARATUS AND METHOD FOR THE TREATMENT OF DERMATOLOGICAL DISEASES OR CONDITIONS - The invention provides methods and apparatus for the treatment of dermatological conditions, including, for example, viral infections, microbial infections, cancers, dermatological conditions and particularly infections of the skin caused by human papillomavirus (HPV). | 01-19-2012 |
20120016357 | METHODS AND SYSTEMS FOR FOCUSED BIPOLAR TISSUE ABLATION - Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current. | 01-19-2012 |
20120016358 | SYSTEMS, ASSEMBLIES, AND METHODS FOR TREATING A BRONCHIAL TREE - Systems, assemblies, and methods to treat pulmonary diseases are used to decrease nervous system input to distal regions of the bronchial tree within the lungs. Treatment systems damage nerve tissue to temporarily or permanently decrease nervous system input. The treatment systems are capable of heating nerve tissue, cooling the nerve tissue, delivering a flowable substance that cause trauma to the nerve tissue, puncturing the nerve tissue, tearing the nerve tissue, cutting the nerve tissue, applying pressure to the nerve tissue, applying ultrasound to the nerve tissue, applying ionizing radiation to the nerve tissue, disrupting cell membranes of nerve tissue with electrical energy, or delivering long acting nerve blocking chemicals to the nerve tissue. | 01-19-2012 |
20120022518 | COMBINED MODALITY TREATEMENT SYSTEMS, METHODS AND APPARATUS FOR BODY CONTOURING APPLICATIONS - Systems and methods that enable delivery of radiofrequency energy and cryotherapy applications to adipose tissue for reduction and contouring of body fat are described herein. Aspects of the disclosure are directed to methods for reducing surface irregularities in a surface of a subject's skin resulting from an uneven distribution of adipose tissue in the subcutaneous layer. The method can include delivering capacitively coupled or conductively coupled radiofrequency energy to a target region of the subject at a frequency which selectively heats fibrous septae in a subcutaneous layer of the target region to a maximum temperature less than a fibrous septae denaturation temperature. Furthermore, the method can include removing heat such that lipid-rich lobules in the subcutaneous layer are affected while non-lipid-rich cells and lipid-rich regions adjacent to the fibrous septae are not substantially affected. | 01-26-2012 |
20120022519 | SURGICAL CUTTING AND SEALING INSTRUMENT WITH CONTROLLED ENERGY DELIVERY - A surgical instrument for supplying energy to tissue can comprise a jaw member comprising an electrode, wherein the electrode is configured to supply energy from a power source to captured tissue. A control unit is configured to regulate the amount of energy delivered to the tissue through the monitoring of the current flowing through the tissue and the rate of change of the current flowing through the tissue. Through the monitoring of the current, the impedance of the tissue and the rate of change of impedance of the tissue may be determined to monitor the state of the captured tissue and reduce excess tissue heating. | 01-26-2012 |
20120022520 | METHODS AND SYSTEMS FOR ENDOMETRIAL ABLATION - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes. A Hall effect sensor carried by the working end is used to generate a signal that indicates a dimension of the uterine cavity or a frame-open parameter of the working end. | 01-26-2012 |
20120022521 | System And Method For Measuring Initial Tissue Impedance - An electrosurgical system and method are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The generator is further adapted to supply an electrical signal having at least one substantially constant value to tissue to determine initial tissue impedance response. The generator includes sensor circuitry adapted to continuously monitor initial tissue impedance response, wherein the initial tissue impedance response includes one of an initial impedance, an impedance drop, an impedance minimum and a first impedance rise. The generator also includes a microprocessor adapted to generate at least one tissue parameter based as a function of the initial impedance, the impedance drop, the impedance minimum and the first impedance rise. The system also includes an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue for treatment. | 01-26-2012 |
20120029498 | Bipolar Radio Frequency Ablation Instrument - An electrocautery instrument is disclosed comprising: a handle having a handle axis; a first electrode assembly, the first electrode assembly having a first handle electrode section retained in the handle, a first oblique electrode section extending from the handle, and a first ablation electrode section disposed at an offset distance from the handle axis; and a second electrode assembly, the second electrode assembly having a second handle electrode section retained in the handle, a second oblique electrode section extending from the handle, and a second ablation electrode section disposed at the offset distance from the handle axis, the second electrode assembly being generally congruent to the first electrode assembly, the handle being configured to retain the first ablation electrode section in generally parallel relationship to the second ablation electrode section. | 02-02-2012 |
20120029499 | METHOD AND APPARATUS FOR PLASMA SKIN RESURFACING - An apparatus for treating a skin surface of a patient includes a probe having an opening to be in contact with the skin surface. The probe includes an electrode disposed within the probe and connected to a coaxial cable, the electrode configured to receive radio frequency power and to provide a glow discharge when a vacuum is provided to the probe. A shield is provided between the skin surface and the probe, whereby the shield includes a plurality of holes, and whereby ions of a plasma discharge pass through the holes of the shield and impact the skin surface. | 02-02-2012 |
20120029500 | Sequential Activation RF Electrode Set for Renal Nerve Ablation - A catheter includes a flexible shaft having a length sufficient to access a patient's renal artery. A treatment element at the distal end of the shaft is dimensioned for deployment within the renal artery. The treatment element comprises a radially expandable structure configured to maintain positioning within the renal artery. A multiplicity of electrodes are spaced apart on the treatment element and configured for switchable activation and deactivation in a predetermined sequence to generate overlapping zones of heating directed at perivascular nerves of the renal artery. The overlapping heating zones comprise a distal zone associated with relatively high current densities at a distance from the treatment element sufficient to ablate the perivascular renal nerves and a proximal zone associated with current densities lower than those of the distal zone and insufficient to cause thermal injury to tissue of the renal artery adjacent the treatment element. | 02-02-2012 |
20120029501 | High-Strength Microwave Antenna Assemblies - Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna. | 02-02-2012 |
20120029502 | Coolant Line Clip Assemblies For Use With Fluid Delivery Systems - The present disclosure provides a fluid clip for use with a coolant system for electrosurgical procedures. The fluid clip includes a clip housing having proximal and distal ends and a channel defined therethrough. The channel is dimensioned to receive tubing for carrying a cooling fluid from a cooling source. The fluid clip includes a luer that includes a passageway defined therethrough. The passageway is dimensioned to securely receive the tubing such that the tubing extends through the luer for reception within the channel defined in the clip housing. The luer includes one or more interface on a surface thereof that matingly engages a corresponding interface on the clip housing. The interface on the luer cooperates with the interface on the clip housing to limit rotation of the tubing. | 02-02-2012 |
20120029503 | Slidable Choke Microwave Antenna - A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna coupled to the feedline and a trocar coupled to the dipole antenna at a distal end thereof. The antenna assembly also includes a slidable outer jacket disposed about the radiating portion and the feedline. The slidable outer jacket being configured to slide about at least one of the radiating portion and the feedline from a closed configuration, in which the slidable outer jacket is mated with the trocar and a retracted configuration, in which the slidable outer jacket is retracted in a proximally exposing at least a portion the radiating portion. | 02-02-2012 |
20120041431 | ELECTRICAL SKIN REJUVENATION - A method is provided for reducing a wrinkle on a skin surface ( | 02-16-2012 |
20120041432 | Method and Apparatus for Treating Subcutaneous Histological Features - A system and method for treating subcutaneous histological features without affecting adjacent tissues adversely employs microwave energy of selected power, frequency and duration to penetrate subcutaneous tissue and heat target areas with optimum doses to permanently affect the undesirable features. The frequency chosen preferentially interacts with the target as opposed to adjacent tissue, and the microwave energy is delivered as a short pulse causing minimal discomfort and side effects. By distributing microwave energy at the skin over an area and adjusting power and frequency, different conditions, such as hirsuitism and telangiectasia, can be effectively treated. | 02-16-2012 |
20120041433 | Microwave Antenna Assembly and Method of Using the Same - A microwave antenna assembly comprising an elongate shaft having proximal and distal ends and a lumen defined therebetween, a conductive member at least partially disposed within the inner lumen of elongate shaft, conductive member being selectively deployable relative to a distal end of elongate shaft from a first condition wherein a distal end of conductive member at least partially abuts the distal end of elongate shaft to a second condition wherein the distal end of conductive member is spaced relative to the distal end of elongate shaft and a first dielectric material disposed between elongate shaft and conductive member, wherein a portion of conductive member is distal to the distal end of elongate shaft and adapted to penetrate tissue. | 02-16-2012 |
20120041434 | TISSUE ABLATION METHODS - Tissue is treated using a radiofrequency power supply connected to an applicator having a chamber filled with an electrically non-conductive gas surrounded by a thin dielectric wall. A radiofrequency voltage is applied at a level sufficient to ionize the gas into a plasma and to capacitively couple the ionized plasma with the tissue to deliver radiofrequency current to ablate or otherwise treat the tissue. | 02-16-2012 |
20120046657 | Stent Graft Fenestration - A method for creating a channel through a foreign material located in a body of a patient, the foreign material defining a material first surface and a substantially opposed material second surface, the channel extending through the foreign material between the material first and second surfaces, the method using an apparatus including an electrode, the method comprising: positioning the electrode substantially adjacent to the material first surface; energizing the electrode with a radiofrequency current; and using the electrode energized with the radiofrequency current to deliver energy into the foreign material to create the channel, wherein the foreign material is included in a stent graft. | 02-23-2012 |
20120059365 | Microwave Spacers and Method of Use - Disclosed is a microwave spacer for guiding and positioning microwave energy delivery devices during a surgical procedure. The microwave energy device spacer includes a body forming a plurality of device apertures defined therein, the plurality of device apertures including at least two lumens and at least one arcuate slot. The lumens are configured to receive an energy delivery device therethrough. The arcuate slot includes a length, a width and a radius of curvature and is configured to receive an additional energy delivery device therethrough. | 03-08-2012 |
20120059366 | APPARATUS AND METHODS FOR ABLATION EFFICACY - Apparatus and methods for ablation efficacy are described herein where a hood having a deployable elongated feature can extend beyond a distal face of the hood. The elongated feature can channel the energy to the deeper regions within the tissue (such as trabeculated regions or other tissue structures) such that the energy can be delivered to the target tissue despite small or large irregularities in the target tissue surface (or region) and/or changes in the relative distances between the hood and the target tissue. | 03-08-2012 |
20120059367 | Electrosurgical System Employing Multiple Electrodes - A system for heat ablation of tissue, the system comprising a radiofrequency source configured to supply RF energy to at least two electrodes for treating tissue, at least one return electrode configured to return the RF energy to the radiofrequency source, a controller configured to sequentially apply the RF energy to each of the at least two electrodes for a pre-determinable period of time and circuitry configured to switch the RF energy to an internal load. The RF energy is applied simultaneously to the internal load and at least one of the at least two electrodes. The controller is configured to apply the RF energy to the next electrode in the sequence when the amount of time the applied RF energy is off is greater than a predetermined minimum off time. | 03-08-2012 |
20120059368 | ABLATION CATHETER WITH BALLOON AND ABLATION CATHETER SYSTEM WITH BALLOON - In order to perform balloon ablation and spot ablation by one ablation catheter without exchanging an ablation catheter body at the time of treatment by catheter ablation, an ablation catheter with a balloon is provided with a catheter shaft, a balloon which is mounted to the front end side in the longitudinal direction of the catheter shaft, a lumen which communicates with the balloon from the end face on the back end side in the abovementioned longitudinal direction, an in-balloon electrode and an in-balloon temperature sensor which are disposed in the balloon, and a front end electrode and a front end temperature sensor which are mounted in a front end region including the end face on the front end side in the abovementioned longitudinal direction. | 03-08-2012 |
20120071870 | Low Profile Electrode Assembly - A tissue electrode assembly includes a membrane configured to form an expandable, conformable body that is deployable in a patient. The assembly further includes a flexible circuit positioned on a surface of the membrane and comprising at least one base substrate layer, at least one insulating layer and at least one planar conducting layer. An electrically-conductive electrode covers at least a portion of the flexible circuit and a portion of the surface of the membrane not covered by the flexible circuit, wherein the electrically-conductive electrode is foldable upon itself with the membrane to a delivery conformation having a diameter suitable for minimally-invasive delivery of the assembly to the patient. | 03-22-2012 |
20120071871 | ELECTROSURGICAL TISSUE SEALING AUGMENTED WITH A SEAL-ENHANCING COMPOSITION - Embodiments of the disclosed technology provide systems, devices, and methods of creating an electrosurgical tissue seal that is augmented with a seal-enhancing composition. One embodiment of a device includes a set of opposing electrosurgical jaws configured to be able to close on a targeted tissue-sealing site; the jaws have a reservoir configured to hold a tissue seal-enhancing composition. The reservoir is in communication with a surface of the tissue-sealing site when the jaws are closed on the site, and the electrosurgical device is configured to deliver the tissue seal-enhancing composition to the site during an electrosurgical procedure. The device is further configured to deliver sufficient radiofrequency energy to the site such that the targeted tissue and the tissue seal-enhancing composition at the tissue-sealing site are processed to form a high integrity sealed tissue site. | 03-22-2012 |
20120078243 | CONTROL FEATURES FOR ARTICULATING SURGICAL DEVICE - An electrosurgical device includes a body, an end effector, a cutting member, and a shaft. The end effector comprises a pair of jaws and at least one electrode that is operable to deliver RF energy to tissue clamped between the jaws. The cutting member is operable to cut tissue clamped between the jaws. The shaft includes an articulation section that is operable to selectively position the end effector at non-parallel positions relative to the longitudinal axis of the shaft. The body includes a controller operable to selectively actuate the articulation section. The controller may include a rotary knob, a pivoting knob, or a pivoting fin, among other things. An electrical coupling may contact a conductive moving member along at least two axes. A resiliently biased lever may assist a trigger in returning from an actuated position to a home position. | 03-29-2012 |
20120078244 | CONTROL FEATURES FOR ARTICULATING SURGICAL DEVICE - An electrosurgical device includes a body, an end effector, a cutting member, and a shaft. The end effector comprises a pair of jaws and at least one electrode that is operable to deliver RF energy to tissue clamped between the jaws. The cutting member is operable to cut tissue clamped between the jaws. The shaft includes an articulation section that is operable to selectively articulate the end effector relative to the shaft. The body includes a controller operable to selectively actuate the articulation section. The controller may include a trigger that also drives the cutting member, a rotator that also rotates the shaft and end effector, a wedge-shaped pivoting member, a pivotally coupled pair of housing portions, or a pivoting cam member, etc. A release member may selectively release the articulation section from the controller, allowing a resilient bias to return the end effector into alignment with the shaft. | 03-29-2012 |
20120083779 | ELECTROSURGICAL SYSTEM - A method of controlling an electrosurgical system is described, the system including an electrosurgical generator and an electrosurgical instrument connected to the generator by means of a cable. A radio frequency signal is supplied to the electrosurgical instrument at an operating frequency, and the voltage of the radio frequency signal is monitored at a frequency corresponding to the frequency of a resonant circuit established by the electrosurgical instrument together with the cable. The monitored voltage is capable of indicating the initiation of arcing from the electrosurgical instrument, such that the voltage of the radio frequency signal can be adjusted in response to the monitored voltage at the resonant frequency. The magnitude of the monitored voltage is an indication of the degree of arcing. An electrosurgical system including an arc detector is also disclosed. | 04-05-2012 |
20120083780 | SURGICAL INSTRUMENTS AND TECHNIQUES FOR TREATING GASTRO-ESOPHAGEAL REFLUX DISEASE - Instruments for thermally-mediated treatment of a patient's lower esophageal sphincter (LES) to induce an injury healing response to thereby populate the extracellular compartment of walls of the LES with collagen matrices to altere the biomechanics of the LES to provide an increased intra-esophageal pressure for preventing acid reflux. A preferred embodiment is a bougie-type device for trans-esophageal introduction that carries conductive electrodes for delivering Rf energy to walls of the LES (i) to induce the injury healing response or (ii) to “model” collagenous tissues of the LES by shrinking collagen fibers therein. | 04-05-2012 |
20120083781 | SUPPLY DEVICE FOR PROVIDING AN HF OUTPUT VOLTAGE, HF SURGICAL INSTRUMENT COMPRISING A CORRESPONDING SUPPLY DEVICE, AND METHOD FOR THE OPERATION OF AN HF GENERATOR UNIT - Supply units for providing a high-frequency RF voltage and an RF current to electrosurgical instruments so that they can be used for cutting and/or coagulating tissue, while providing regulation of the RF current and the RF voltage and providing a corresponding feedback for the treating physician. A supply unit includes an RF generator unit for generating the RF output voltage, a measuring unit for determining an electrical load while an RF output current is being applied, a signal unit for outputting a haptically perceivable (e.g., tactile) signal and a control unit that is in communicative connection at least with the measuring unit and the signal unit to activate the signal unit as a function of the electrical load. | 04-05-2012 |
20120089138 | GERD TREATMENT APPARATUS AND METHOD - An apparatus includes an expandable member. The expandable member is sized to be positionable in a sphincter. An energy delivery device is positioned on a surface of the expandable member. The energy delivery device has a configuration that provides sufficient energy delivery to create lesions in the interior of the sphincter. When the expandable member is removed from the sphincter, the sphincter returns to its closed or contracted configuration. | 04-12-2012 |
20120089139 | Method and System for Programming and Controlling an Electrosurgical Generator System - An electrosurgical generator system includes an electrical generator having an RF stage for outputting electrical energy having at least one waveform for performing an electrosurgical procedure. The system further includes at least one control module executable on at least one processor which controls at least one parameter of the outputted electrical energy and a configuration controller operably associated with the electrical generator which generates configuration data to configure the at least one control module to provide at least one modality of control of the outputted electrical energy based on the configuration data. | 04-12-2012 |
20120095453 | ELECTROSURGICAL WAND AND RELATED METHOD AND SYSTEM - An electrosurgical wand. At least some of the illustrative embodiments are electrosurgical wands including an elongate housing that defines a handle end and a distal end, a first discharge aperture on the distal end of the elongate housing, a first active electrode of conductive material disposed on the distal end of the elongate housing, a first return electrode of conductive material disposed within the first fluid conduit, and an aspiration aperture on the distal end of the elongate housing fluidly coupled to a second fluid conduit. | 04-19-2012 |
20120095454 | ELECTROSURGICAL WAND AND RELATED METHOD AND SYSTEM - Electrosurgical wand. At least some of the illustrative embodiment are electrosurgical wands including: an elongate housing that defines a handle end and a distal end; an aspiration aperture on the distal end of the elongate housing the aspiration aperture fluidly coupled to a first fluid conduit, the first fluid conduit within the elongate housing; a discharge aperture on the distal end of the elongate housing, the discharge aperture fluidly coupled to a second fluid conduit, and the second fluid conduit within the elongate housing; a first active electrode of conductive material on the distal end of the elongate housing, the first active electrode between the discharge aperture and the aspiration aperture; and a conductive plate that abuts the discharge aperture, at least a portion of the conductive plate disposed over the discharge aperture. | 04-19-2012 |
20120095455 | PHOTOCHEMICAL TISSUE BONDING - Photochemical tissue bonding methods include the application of a photosensitizer to a tissue, e.g., cornea, followed by irradiation with electromagnetic energy to produce a tissue seal. The methods are useful for wound repair, or other tissue repair. | 04-19-2012 |
20120095456 | Articulating Bipolar Electrosurgical Instrument - A bipolar electrosurgical instrument has a pair of pivotable juxtaposed jaw members and a locking mechanism operatively associated with a second of the jaw members. The locking mechanism has a first position engaged with the second jaw member for preventing movement of the second jaw member between an axially aligned orientation and at least one angled orientation, and a second position. The second position is disengaged from the second jaw member allowing for movement of the second jaw member between the axially aligned orientation and the at least one angled orientation. The instrument has an actuation mechanism operatively connected to a first of the jaw members with the actuation mechanism operable to move the first jaw member between an axially aligned first orientation and at least one angled orientation. An articulation knob is operatively associated with the locking mechanism and effectuates independent operation of the locking and actuation mechanisms. | 04-19-2012 |
20120101487 | Microwave Spacers and Methods of Use - Disclosed is a spacer, configured to position microwave energy delivery devices, including a housing, with a housing body and a compression body, and at least one compression mechanism. The housing body forms a housing body cavity and a plurality of housing device apertures. The compression body forms a plurality of compression body apertures that each correspond to a housing device aperture. The compression body slideably engages the housing body cavity and at least a portion of the compression body is positioned within the compression body cavity. A compression mechanism is positioned between the housing body and the compression body and configured to provide a biasing force between the housing body and the compression body. In a first position the housing device apertures are misaligned with the compression body apertures and in the second position the housing apertures are aligned with the compression body apertures forming a plurality of aligned apertures. | 04-26-2012 |
20120101488 | SURGICAL INSTRUMENT WITH MAGNETIC CLAMPING FORCE - A surgical instrument comprising an end effector, the end effector comprising first and second opposing jaw members, wherein at least one of the first and second jaw members are moveable such that the first and second jaw members are transitionable between open and closed positions. The first jaw member may comprise a permanent magnet. The second jaw member may also comprise a magnet (e.g., permanent or soft). The magnetic motive force between the magnets of the first and second jaw members may attract each other to thereby reduce the external force required to transition the first and second jaw members to the closed position. In addition, the magnets may be configured to repeal each other to thereby aid in opening the jaw members. | 04-26-2012 |
20120101489 | Electrosurgical Cutting Devices - A cutting device for tissue separation includes a cutting edge using electrical energy such as RF power that is coupled to, but thermally insulated from, a catheter in an elongated medical device. Thermal insulation between a ring-type cutting device and the catheter is provided by a gap, slots within the ring, and/or slanted slots within the ring. In one embodiment, tissue separation occurs by rotation of a ring-type electrically-powered cutting edge having internal cross-bar elements. In an alternate embodiment, tissue separation occurs by longitudinal movement of an offset electrically-powered cutting edge that is pressed against tissue by an inflatable balloon. In a further alternate embodiment, a cutting edge is coupled longitudinally to a catheter, is provided electrical energy by wired connection to the braided catheter, but is thermally isolated from the catheter. | 04-26-2012 |
20120101490 | Renal Nerve Ablation Using Conductive Fluid Jet and RF Energy - An ablation catheter is dimensioned for advancement through a vessel of the body. The catheter includes a lumen configured to receive a pressurized electrically conductive fluid. A nozzle is fluidly coupled to the distal end of the pressurizable lumen and configured to direct a jet of the pressurized conductive fluid at a wall of a target vessel, such as a renal artery, to create or expand a hole through the target vessel and to fill the hole and at least some of the space adjacent to the hole with the conductive fluid. An electrical conductor extends at least partially along the catheter and terminates proximate or at the distal end of the pressurizable lumen. The electrical conductor is configured to conduct radiofrequency energy to the conductive fluid sufficient to ablate target tissue, such as perivascular renal nerve tissue, proximate the hole. | 04-26-2012 |
20120101491 | Thermocouple Measurement System - A thermocouple measuring circuit for sensing a temperature at a measuring point is provided. The thermocouple measurement circuit ( | 04-26-2012 |
20120101492 | SURGICAL ANTENNA STRUCTURE - A surgical spatula has a planar transmission line for carrying microwave energy formed from a sheet of a first dielectric material which has first and second conductive layers on opposite sides thereof. The surgical spatula also has a coaxial cable for delivering microwave energy to the planar transmission line. The coaxial cable has an inner conductor, an outer conductor coaxial with the inner conductor and a second dielectric material separating the inner and outer conductors. The inner and outer conductors extend beyond the second dielectric to overlap opposite surfaces of the transmission line and electrically contact the first conductive layer and second conductive layer respectively. The width of the first and second conductive layers is selected to create an impedance match between the transmission line and the coaxial cable. | 04-26-2012 |
20120109120 | Ablation Device - An ablation device and a method of ablating a tissue are provided. The ablation device includes a mechanically expandable member having a proximal portion, a distal portion and an energy delivery portion. The mechanically expandable member also has an expanded and a collapsed configuration. The ablation device further includes a first elongate shaft having a proximal portion and a distal portion, the distal portion of the mechanically expandable member is operably connected to the distal portion of the first shaft. The ablation device includes a second elongate shaft having a proximal portion and a distal portion, the proximal portion of the mechanically expandable member is operably connected to the distal portion of the second shaft and the second shaft is movable relative to the first shaft. The ablation device includes a handle operably connected to the first elongate shaft and the second elongate shaft. | 05-03-2012 |
20120116378 | ENDOMETRIAL ABLATION WITH A DEVICE THAT CONFORMS TO SYMMETRIC OR ASYMMETRIC UTERINE CAVITIES - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes and for conforming to an asymmetric or symmetric shape of the patient's uterine. | 05-10-2012 |
20120116379 | Motor Driven Electrosurgical Device With Mechanical And Electrical Feedback - An electrosurgical device comprises an end effector, a cutting member, and en electromechanical driver. The end effector comprises a pair of jaws that clamp tissue. The jaws include electrodes that deliver RF energy to clamped tissue. The cutting member cuts tissue clamped between the jaws. The electromechanical driver drives the cutting member. A control module commands the electromechanical driver, and regulates the delivery of RF energy to the electrodes, based on a combination of user input and feedback signals from the electrodes and from the electromechanical driver. The device may provide tactile feedback to the user through the user input feature, based on a load encountered by the cutting member. The device may alert the user when the exterior of end effector makes incidental contact with tissue, to avoid inadvertently burning the tissue. The device may include a removable battery pack to power the electromechanical driver and the electrodes. | 05-10-2012 |
20120116380 | Sterile Medical Instrument Charging Device - A system includes a medical device and a charging device. A sterile barrier may be interposed between the medical device and the charging device. The medical device includes an integral power source and an active element. The charging device is configured to charge the integral power source. The charging device may charge the integral power source through direct contact between features of the charging device and features the medical device. The charging device may alternatively charge the integral power source wirelessly, such as through inductive coupling. The medical device may include conductive prongs that are retained by the charging device. The charging device may physically couple with the medical device via magnets. The medical device and the charging device may be provided together in a sterile package as a kit. The kit may also include a reclamation bag to facilitate reclamation of electrical components. | 05-10-2012 |
20120116381 | SURGICAL INSTRUMENT WITH CHARGING STATION AND WIRELESS COMMUNICATION - An apparatus comprises an electrically power surgical instrument having a handle assembly. The apparatus also comprises a communication device positioned within the handle assembly. The communication device is operable to communicate with at least a portion of the electrically powered surgical instrument. The apparatus further comprises an external device in wireless communication with the communication device. The external device is operable to receive information from the communication device and the external device is operable to provide an output viewable to the user. | 05-10-2012 |
20120116382 | CATHETER APPARATUSES HAVING MULTI-ELECTRODE ARRAYS FOR RENAL NEUROMODULATION AND ASSOCIATED SYSTEMS AND METHODS - Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function or of vascular structures that feed or perfuse the neural fibers. | 05-10-2012 |
20120116383 | CATHETER APPARATUSES HAVING MULTI-ELECTRODE ARRAYS FOR RENAL NEUROMODULATION AND ASSOCIATED SYSTEMS AND METHODS - Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function or of vascular structures that feed or perfuse the neural fibers. | 05-10-2012 |
20120116384 | RF-ELECTRODE SURFACE AND METHOD OF FABRICATION - A system for applying radiofrequency energy to tissue comprising a probe, an energy-delivery surface, and an energy source. The energy-delivery surface is elastomeric with an electrically conductive knit component. The energy-delivery surface can be expanded within an interior of a patient's body to engage tissue and energy delivered from the source through the expanded surface. | 05-10-2012 |
20120116385 | ABLATION PROBE WITH ECHOGENIC INSULATIVE SHEATH - Tissue ablation probes are provided. Each tissue ablation probe comprises an electrically conductive probe shaft, at least one tissue ablation electrode carried by a distal end of the probe shaft, and an electrically insulative outer sheath disposed on the probe shaft. The sheath is at least partially composed of polyether ether ketone (PEEK) and another material comprising condensed-phase particles interspersed throughout the PEEK to increase the echogenicity of the outer sheath. The durability of the PEEK allows the sheath to be formed as thinly as possible, thereby minimizing the diameter of the ablation probe, while the inclusion of condensed-phase particles within the PEEK does not significantly degrade the durability of the sheath. | 05-10-2012 |
20120123403 | Apparatus, System and Method for Performing an Electrosurgical Procedure - An apparatus for performing a microwave ablation procedure is provided. The apparatus includes a catheter including an open proximal end and a closed distal end configured to percutaneously access tissue. A directional microwave antenna probe adapted to connect to a source of microwave energy selectively couples to the catheter. The directional microwave antenna is rotatable within the catheter for directing the emission of microwave energy therefrom to tissue | 05-17-2012 |
20120123404 | Fingertip Electrosurgical Instruments for Use in Hand-Assisted Surgery and Systems Including Same - A bipolar electrosurgical instrument includes a first electrode plate capable of applying bipolar energy into tissue, and a second electrode plate capable of applying bipolar energy into tissue. The bipolar electrosurgical instrument also includes a first attachment member coupled to the first electrode plate, and a second attachment member coupled to the second electrode plate. The first attachment member is configured to couple the first electrode plate to a user's finger, and the second attachment member is configured to couple the second electrode plate to the user's thumb, whereby the first and second electrode plates are arrangeable to opposingly face one another. | 05-17-2012 |
20120123405 | Power Glove - A system and method for powering a wireless electrosurgical device using a powered glove. The powered glove includes at least a conductive pad on a finger and a thumb. The glove is connected to a generator and supplies power to the wireless electrosurgical device when at least two conductive pads touch conductive buttons on the wireless device. The user selects the operating mode by selecting different combination of conductive buttons and/or switches on the wireless device. The generator senses a voltage drop across a circuit within the electrosurgical device to determine the operating mode. The generator then supplies the RF energy based on the selected operating mode via the glove to the wireless device. | 05-17-2012 |
20120123406 | Self-Expanding Cooling Electrode for Renal Nerve Ablation - A metallic tube arrangement includes an electrode region configured to expand radially and contract radially in response to increasing and decreasing a temperature at the electrode region, respectively. The electrode region is configured for intravascular deployment and delivery of high frequency energy to target tissue of a target vessel of the body. The electrode region is configured to expand radially to a diameter sufficient to contact an inner wall of the target vessel in response to a decrease in electrode region temperature and to contract radially to a diameter smaller than a diameter of the target vessel in response to an increase in electrode region temperature. | 05-17-2012 |
20120123407 | METHOD OF PROMOTING TISSUE ADHESION - The present invention provides methods and devices for promoting tissue adhesion, which utilizes the healing process and scar tissue formation to bond two tissue surfaces together. A tissue injury is accomplished by destroying the mucosal layer of tissue. After the injury is initiated, the tissue is preferably held in close contact by a tissue apposition means such as a suture, staple or clip device placed adjacent to the treatment site. The tissue injury may be initiated by electrical/radiofrequency energy; chemical or mechanical means integrated with the tissue apposition device or delivered by a separate instrument such as an electrocautery catheter through an endoscope. As scar tissue created by the injury forms, the tissue surfaces become bonded together in a permanent union. | 05-17-2012 |
20120130361 | ENDOMETRIAL ABLATION DEVICES AND SYSTEMS - Systems and methods for endometrial ablation. The systems include a handle and elongated introducer sleeve extending to an expandable working end having a fluid-tight interior chamber. A thin dielectric wall surrounds at least a portion of the interior chamber and has an external surface for contacting endometrial tissue. The thin dielectric wall surrounds a collapsible-expandable frame and receives an electrically non-conductive gas. First and second polarity electrodes are exposed to the interior and exterior of the chamber, respectively. A radiofrequency power source operatively connects to the electrode arrangement to apply a radiofrequency voltage across the first and second electrodes, wherein the voltage is sufficient to initiate ionization of the neutral gas into a conductive plasma within the interior chamber, and to capacitively couple the current in the plasma across the thin dielectric wall to ablate endometrial tissue engaged by the external surface of the dielectric structure. | 05-24-2012 |
20120130362 | CATHETER-FOCUSED MAGNETIC FIELD INDUCED RENAL NERVE ABLATION - A flexible catheter includes a magnetically permeable element provided at its distal end. The magnetically permeable element is configured for placement within the renal artery. External coils, positionable on anterior and posterior portions of a patient in proximity to the renal artery, are coupled to a generator which energizes the external coils to create a high-frequency oscillating magnetic field in body tissue between the external coils including the renal artery and perivascular renal nerve tissue. The magnetically permeable element serves to concentrate the magnetic field in a region near the renal artery. The concentrated magnetic field induces high frequency electric current sufficient to ablate the perivascular renal nerve tissue proximate the renal artery. A cooling arrangement can be provided at the catheter's distal end and configured to provide cooling to the renal artery during ablation of the perivascular renal nerve tissue. | 05-24-2012 |
20120130363 | INVERTED BALLOON RF ABLATION CATHETER AND METHOD - Disclosed herein, among other things, are methods and apparatus related to radio frequency (RF) ablation catheters. The present subject matter provides a method for forming an ablation catheter having a balloon at a distal end of the catheter. The method includes applying a band of conductive material to an outer surface of the balloon. The band of conductive material is adapted to provide one or more electrodes for radio frequency ablation therapy. A distal end of a lead is connected to the band of conductive material. The balloon is inverted, so that the inverted balloon includes the band of conductive material on an inside surface. According to various embodiments, the balloon includes a semi-permeable or hydro-able membrane. | 05-24-2012 |
20120130364 | ELECTROSURGICAL INSTRUMENT AND METHOD FOR PRODUCING AN ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument including a probe tube for transporting fluid, at least one electrode for devitalizing tissue, and at least one conducting foil electrical lead arranged along the longitudinal axis of the probe tube for providing a high frequency (RF) voltage at the electrode. A method of producing an electrosurgical instrument, including applying a conductive foil to a probe tube that extends along the longitudinal axis of the probe tube, and providing at least one electrode on the probe tube, wherein the electrode electrically connects to the conductive foil. | 05-24-2012 |
20120136346 | System and Method for Adaptive RF Ablation - A medical method, device, and system are provided, including advancing an ablation element of a medical device into contact with tissue to be treated, selecting a power level of energy to ablate the tissue, delivering energy at the selected power level to the ablation element, determining whether the ablation element is in continuous contact with the tissue, and reducing the selected power level when the ablation element ceases to be in continuous contact with the tissue. | 05-31-2012 |
20120136347 | ELECTROSURGICAL INSTRUMENTS AND CONNECTIONS THERETO - An electrosurgical instrument includes jaws having an electrode configuration utilized to electrically modify tissue in contact with one or more electrodes. The instrument is removably connectable to an electrosurgical unit via an electrosurgical connector extending from the instrument and a receptacle on the electrosurgical unit. The electrosurgical instrument is rotatable without disrupting electrical connection to the electrodes of the jaws. One or more of the electrodes is retractable. The electrosurgical unit and instrument optimally seals and/or cuts tissue based on identifying the tissue and monitoring the modification of the tissue by the application of radio frequency energy. | 05-31-2012 |
20120143178 | DEVICES AND METHODS FOR PERCUTANEOUS ENERGY DELIVERY - The invention provides a system and method for percutaneous energy delivery in an effective, manner using one or more probes. Additional variations of the system include array of probes configured to minimize the energy required to produce the desired effect. | 06-07-2012 |
20120143179 | Catheter Systems for Cardiac Arrhythmia Ablation - A plurality of catheter-based ablation apparatus embodiments are provided that address several areas of atrial target tissue and which feature firm and consistent ablation element to tissue contact enabling the creation of effective continuous lesions. | 06-07-2012 |
20120143180 | TRIAXIAL ANTENNA FOR MICROWAVE TISSUE ABLATION - An improved antenna for microwave ablation uses a triaxial design which reduces reflected energy allowing higher power ablation and/or a smaller diameter feeder line to the antenna. | 06-07-2012 |
20120150165 | Bipolar Electrosurgical Device - A bipolar electrosurgical device includes a shaft and an electrode tip coupled to a distal end of the shaft. At least a portion of the electrode tip extends distally beyond the distal end of the shaft and includes an insulator extending between a first electrode and a second electrode. The first electrode is configured to he an active electrode and the second electrode is configured to be a return electrode. The electrode tip can include a substantially conically-shaped portion, or can include a spherical portion and a cylindrical portion protruding from the spherical portion at a non-zero angle with respect to a longitudinal axis of the shaft. The substantially conically-shaped portion can include at least a portion of one of the first electrode and the second electrode. The distal end of the shaft can include a fluid outlet opening to provide fluid from a fluid source onto the first electrode and the second electrode. | 06-14-2012 |
20120150166 | Ultrashort Pulse Laser Subsurface Tissue Modifications - For Example, said method and device are directed towards the treatment of skin and subsurface structure of skin for removal of hair, skin protection from Sun light and other externally damaging effects, bacteria depositions, and reduction of hair, acne, sweat, wrinkles among other applications in the skin. Additional example of embodiments of the present invention are subsurface and surface treatment of the cornea, crystalline lens, retina and other ophthalmology applications in treatment of the eye. | 06-14-2012 |
20120150167 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument for minimally invasive surgery, the instrument including two gripping parts which can be brought together into a gripping direction or moved apart counter to the gripping direction. At least one gripping part includes three or more electrically conductive sections, electrically insulated relative to each other. Each electrically conductive section may be separately connected to a high frequency (RF) current generator such that each electrically conductive section can be configured in various electrical configurations by the RF current generator. | 06-14-2012 |
20120150168 | METHOD FOR FRACTIONAL SKIN TREATMENT - A method for cosmetic RF skin treatment where the RF energy supply is isolated from the patient treated, such that in course of treatment no undesired current flows through the subject body. The method includes RF energy to the skin using an applicator with a tip populated by at least one voltage to skin delivering element and an isolating transformer located proximate to the tip to reduce ground currents through parasitic capacitance. The impedance of the skin is monitored during an RF treatment pulse, and operating a controller to control the delivery of an amount of energy to the skin, the amount sufficient to cause a desired skin effect. The pulse energy is increased if the skin impedance is lower than a predetermined impedance threshold; cutting off RF energy supply if the skin impedance is below a predetermined skin impedance value; and preventing pain by cutting-off RF pulses above a predetermined skin impedance value. | 06-14-2012 |
20120157985 | GLOBAL ENDOMETRIAL ABLATION DEVICE - An endometrial ablation apparatus is provided which includes an end member with a plurality of electrodes. The probe is attached to a controller that includes a multiplexer capable of activating each electrode individually or multiple electrodes simultaneously, such that each individual electrode may be energized separately in series to complete the ablation process. A method of performing ablation using such an apparatus is also provided. | 06-21-2012 |
20120157986 | Inducing desirable temperature effects on body tissue - Methods and systems are disclosed for treating diseased tissue by gentle heating. The method induces vasodilation on tissue disposed about an lumen having both healthy tissue and diseased tissue. The method includes coupling a probe surface to the luminal tissue at a target location and transmitting desired quantities of tissue remodeling energy from the coupled probe into each of a plurality of discrete remodeling zones in the luminal tissue so that the tissue remodeling energy heats the plurality of remodeling zones, the remodeling energy being configured to avoid muscular contraction and inhibit both acute and long-term occlusion of the lumen. | 06-21-2012 |
20120157987 | Selectable Eccentric Remodeling and/or Ablation of Atherosclerotic Material - A catheter and catheter system for eccentric remodeling and/or removal of atherosclerotic material of a blood vessel of a patient include an elongate flexible catheter body with a radially expandable structure. A plurality of electrodes or other electrosurgical energy delivery surfaces can radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector near the distal end of the catheter body may measure circumferential atherosclerotic material distribution, and a power source selectively energizes the electrodes to eccentrically remodel the measured atherosclerotic material. | 06-21-2012 |
20120157988 | TUNED RF ENERGY FOR SELECTIVE TREATMENT OF ATHEROMA AND OTHER TARGET TISSUES AND/OR STRUCTURES - A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring. | 06-21-2012 |
20120157989 | TUNED RF ENERGY AND ELECTRICAL TISSUE CHARACTERIZATION FOR SELECTIVE TREATMENT OF TARGET TISSUES - A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring. | 06-21-2012 |
20120165806 | Microwave Field-Detecting Needle Assemblies, Methods of Manufacturing Same, Methods of Adjusting an Ablation Field Radiating into Tissue using Same, and Systems Including Same - A method of adjusting an ablation field radiating into tissue includes the initial steps of providing an energy applicator and providing one or more microwave field-detecting needle assemblies. Each microwave field-detecting needle assembly includes one or more rectifier elements capable of detecting microwave field intensity via rectification. The method includes the steps of positioning the energy applicator and the one or more microwave field-detecting needle assemblies in tissue, transmitting energy from an energy source through the energy applicator to generate an ablation field radiating about at least a portion of the energy applicator into tissue, and adjusting the ablation field radiating about at least the portion of the energy applicator into tissue based on at least one electrical signal transmitted by the one or more microwave field-detecting needle assemblies. | 06-28-2012 |
20120165807 | ELECTROSURGICAL MEDICAL SYSTEM AND METHOD - A method for controlling an electrosurgical electrode of a medical device includes providing an electrosurgical tissue cutting electrode having an arcuate electrode portion; delivering energy from an RF generator to the electrosurgical electrode, said RF generator including an RF amplifier; monitoring an electrical characteristic associated with said electrosurgical electrode; and establishing a desired RF power output and a desired RF duty cycle at said RF generator by adjusting DC input voltage applied to an output stage of said RF amplifier based on said monitoring to effect tissue cutting by the arcuate electrode portion. | 06-28-2012 |
20120172857 | Electrosurgical Apparatus Having a Sensor - An electrosurgical apparatus for treating tissue comprises an elongate shaft including a proximal region, a distal region having an electrically conductive region and one or more lumens through the shaft. A stylet is located within one of the lumens for obturating at least a portion of an opening defined by a distal end of the elongated shaft. The stylet distal end has a sensor and may include an occluding component substantially surrounding and affixed to it. The elongated shaft and the stylet can possibly be configured to allow passage of fluid through the lumen while the stylet is located within the lumen. Related stylet configurations are also disclosed. | 07-05-2012 |
20120172858 | Electrosurgical Tissue Treatment Method - Methods of treating spinal tissue of a patient's body are disclosed, some including providing a system including an energy source and first and second probe assemblies, wherein each of the probe assemblies includes an electrically conductive energy delivery device electrically coupled to the energy source; inserting the energy delivery devices of the first and second probe assemblies into spaced-apart treatment sites for the spinal tissue; and delivering energy from the energy source to the spinal tissue through the energy delivery devices. Various options and modifications are possible. For example, energy may be delivered in both a bipolar manner and a monopolar manner, and at least one of the fist ad second probe assemblies may be repositioned before again delivering energy. | 07-05-2012 |
20120172859 | MULTIPOLARITY EPICARDIAL RADIOFREQUENCY ABLATION - A method of ablating an epicardial tissue region, including positioning a medical device adjacent the epicardial tissue region, the medical device having a first electrode, a second electrode, and a third electrode located in between the first and second electrodes; delivering an irrigation fluid to the tissue region; and ablating at least a portion of the tissue region by sequentially activating the third electrode in a monopolar radiofrequency delivery mode and activating the first and second electrodes in a bipolar radiofrequency delivery mode. | 07-05-2012 |
20120172860 | Energy-Delivery Devices with Flexible Fluid-Cooled Shaft, Inflow/Outflow Junctions Suitable for Use with Same, and Systems Including Same - An energy-delivery device suitable for delivery of energy to tissue includes an antenna assembly, a chamber defined about the antenna assembly, and a cable having a proximal end suitable for connection to an electrosurgical energy source. The energy-delivery device also includes a flexible, fluid-cooled shaft coupled in fluid communication with the chamber. The flexible, fluid-cooled shaft is configured to contain a length of the cable therein and adapted to remove heat along the length of the cable during delivery of energy to the antenna assembly. | 07-05-2012 |
20120172861 | Energy-Delivery Devices with Flexible Fluid-Cooled Shaft, Inflow/Outflow Junctions Suitable for Use with Same, and Systems Including Same - An energy-delivery device suitable for delivery of energy to tissue includes an antenna assembly, a chamber defined about the antenna assembly, and a cable having a proximal end suitable for connection to an electrosurgical energy source. The energy-delivery device also includes a flexible, fluid-cooled shaft coupled in fluid communication with the chamber. The flexible, fluid-cooled shaft is configured to contain a length of the cable therein and adapted to remove heat along the length of the cable during delivery of energy to the antenna assembly. | 07-05-2012 |
20120172862 | Energy-Delivery Devices with Flexible Fluid-Cooled Shaft, Inflow/Outflow Junctions Suitable for Use with Same, and Systems Including Same - An energy-delivery device suitable for delivery of energy to tissue includes an antenna assembly, a chamber defined about the antenna assembly, and a cable having a proximal end suitable for connection to an electrosurgical energy source. The energy-delivery device also includes a flexible, fluid-cooled shaft coupled in fluid communication with the chamber. The flexible, fluid-cooled shaft is configured to contain a length of the cable therein and adapted to remove heat along the length of the cable during delivery of energy to the antenna assembly. | 07-05-2012 |
20120172863 | Energy-Delivery Devices with Flexible Fluid-Cooled Shaft, Inflow/Outflow Junctions Suitable for Use with Same, and Systems Including Same - An energy-delivery device suitable for delivery of energy to tissue includes an antenna assembly, a chamber defined about the antenna assembly, and a cable having a proximal end suitable for connection to an electrosurgical energy source. The energy-delivery device also includes a flexible, fluid-cooled shaft coupled in fluid communication with the chamber. The flexible, fluid-cooled shaft is configured to contain a length of the cable therein and adapted to remove heat along the length of the cable during delivery of energy to the antenna assembly. | 07-05-2012 |
20120172864 | Monopolar RF-Surgical Snares - Symmetrical and asymmetrical snares are used for endoscopically controlled methods by which tumors in hollow organs of the gastrointestinal tract can be ensnared and RF-surgically removed from the organ wall for diagnostic and/or therapeutic purposes. These snares are characterised in that one of the two snare portions, in the case of asymmetrical snares the longer of the two snare portions, is completely electrically insulated or is made from electrically non-conductive material and that the other of the two snare portions is made from electrically conductive material and its surface is not electrically insulated. In one embodiment, the asymmetrical snare is characterised in that the long snare portion is so much flexurally stiffer than the short snare portion that it tensions the short snare portion like the string of a bow. | 07-05-2012 |
20120172865 | SURGICAL ANTENNA AND ELECTROSURGICAL SYSTEM USING THE SAME - A surgical spatula ( | 07-05-2012 |
20120179151 | Ferrofluidic Lock - A surgical instrument includes a housing and an elongated shaft extending distally therefrom. The elongated shaft includes a proximal portion, a distal portion and a flexible portion supported therebetween. The flexible portion permits pivotal movement of the distal portion of the elongated shaft and an end effector supported thereon. A locking mechanism is operatively associated with the flexible portion of the elongated shaft to selectively impede pivotal motion of the distal portion. The locking mechanism includes a fluid chamber defined within the flexible portion in which a variable viscosity fluid disposed. The variable viscosity fluid is responsive to the application of an electromagnetic field to exhibit increased rigidity in the presence of the electromagnetic field and reduced rigidity in the absence of the electromagnetic field. An electrical coil is arranged such that the electromagnetic field may be selectively induced by the delivery of electrical energy from a power source. | 07-12-2012 |
20120179152 | COMBINABLE ELECTRODE NEEDLE BASE STRUCTURE - Provided is a combinable electrode needle base structure in which a base to which electrode needles are coupled can be used in a combined or separated state to use the electrode needles according to the size and location of a lesion. In the combinable electrode needle structure, electrode needles are connected to the front side of an electrode needle base, and receive RF waves from RF (radio frequency) generator. The electrode needle base is divided into dividable bases to which the electrode needles are respectively coupled. When a lesion to be cauterized is large or cauterization should be concentrated, the dividable bases are combined and then used, and when a lesion is small or lesions are scattered, the dividable bases may be separated and then used. | 07-12-2012 |
20120179153 | SURGICAL INSTRUMENT WITH SEPARATE TOOL HEAD AND METHOD OF USE - Surgical instruments are disclosed in which an elongated shaft is used in conjunction with a separate, remotely actuable tool head for performing a procedure on a target tissue. The shaft has a tool engagement member carried at its distal end that is remotely actuable through the shaft to engage and release the tool head. | 07-12-2012 |
20120179154 | TISSUE ABLATION USING PULSE MODULATED RADIO FREQUENCY ENERGY - Tissue ablation systems and methods are provided. Ablation energy (e.g., radio frequency energy) is delivered to the tissue and a physiological parameter (e.g., impedance and/or temperature) indicative of a change in moisture concentration of the tissue is sensed. The ablation energy is alternately pulsed on and off to generate an energy pulse train, with the ablation energy being pulsed on if the sensed physiological parameter crosses a threshold value indicative of an increase in the moisture concentration, and being pulsed off if the sensed physiological parameter crosses a threshold value indicative of a decrease in the moisture concentration. | 07-12-2012 |
20120179155 | Radio-Frequency Generator for Powering an Ablation Device - An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated. | 07-12-2012 |
20120179156 | Electrosurgical Systems and Printed Circuit Boards for Use Therewith - An electrosurgical system for treating tissue is disclosed. The system includes an electrosurgical generator, a printed circuit board, a generator ground and a patient ground. The printed circuit board is disposed in mechanical cooperation with the electrosurgical generator and includes a plurality of conductive layers. The generator ground includes a first portion and a second portion. The first portion is electro-mechanically connected to a conductive layer of the printed circuit board and the second portion is electro-mechanically connected to another conductive layer of the printed circuit board. The patient ground includes a portion that is at least partially interposed between the first portion of the generator ground and the second portion of the generator ground. | 07-12-2012 |
20120184950 | Apparatus and Methods for Guiding Catheter-Based Ablation Therapy for Ventricular Arrhythmias Based on Spectral Mapping During Sinus Rhythm - Apparatus for curative ablation are provided to achieve the inactivation or destruction of fibrillar myocardium of the so-called AF nests. In addition, fibrillar myocardium may be identified and mapped by spectral analysis and phase study of the tissue during sinus rhythm. The procedure may be performed by transseptal puncture using only one catheter for ablation and mapping. The methods may be used to localize the application targets even during an arrhythmia. | 07-19-2012 |
20120191083 | System and method for endoluminal and translumenal therapy - A system for conducting denervation of the neural plexus adjacent the renal artery, comprises a pre-shaped ablative element operatively coupled to an elongate deployment member configured to be navigated into the renal artery, the pre-shaped ablative element comprising one or more RF electrodes disposed in an arcuate pattern; and an energy source operatively coupled to the one or more RF electrodes and being configured to cause current to flow from the pre-shaped ablative element and cause localized heating sufficient to denervate nearby neural tissue. | 07-26-2012 |
20120191084 | ELECTROSURGERY APPARATUS WITH PARTIALLY INSULATED ELECTRODE AND EXPOSED EDGE - Electrosurgery method and apparatus. In the method, tissue is cut or coagulated, with an electrically low conductive liquid providing cooling. In another method, skin is cut by electrosurgery in a dry field using a low duty cycle signal energizing the cutting electrode, minimizing tissue charring. A combination coagulation and cutting electrode performs both functions. The cutting is performed by a blade edge generating a local plasma adapted for cutting. Superimposed on the blade edge is an electrode of greater surface area electrically insulated from the cutting electrode, for coagulation. In another version, a single component cutting/coagulation blade (electrode) has a cutting and a flat partially insulated portion defining through holes in the insulation for coagulation. Also provided is an electrical circuit whereby each electrode is isolated by a filter from cross talk and feedback of the RF signal from the other electrode, minimizing arcing. | 07-26-2012 |
20120191085 | Hair Removal Devices and Methods - We describe devices, methods, and systems used for hair removal. In particular, we describe hair removal devices, particularly epilation devices, methods of using those devices, and systems including those hair removal devices. Our hair removal devices include, in combination, a.) at least one primary energy source that applies that energy, e.g., radio-frequency (RF), high intensity focused ultrasonic (HIFU) energy, or high intensity light, e.g., intense-pulsed light (IPL) or light from flash lamps or lasers, to the skin or to hair in a continuous, semi-continuous, or pulsed mode and b.) a hair removal component or components, such as rotary mechanical hair removal structures or epilators, that perform a mechanical hair removal step. Auxiliary treatment or control components such as comparatively lower power heaters, ultrasound devices, coolers, impedance measurement devices, etc. may also be included in the combination or used in conjunction with our combination device. | 07-26-2012 |
20120197246 | ABLATION CATHETER - An ablation catheter system including a radio frequency generator and an elongate catheter having an ablation element at the distal portion thereof The ablation element has at least one electrode electrically connected to the radio frequency generator and a shape memory component formed from a shape memory material. The shape memory component transforms the ablation element between a first straightened delivery configuration and a second deployed configuration. Thermal energy transfer between the electrode and the shape memory component transforms the shape memory component into the deployed configuration and places the electrode of the ablation element into contact with tissue at a treatment site. The transformation temperature of the shape memory material is a temperature above body temperature such that the transformation of the shape memory component is not activated by mere placement within the body but rather is activated by heat transfer from the electrodes. | 08-02-2012 |
20120197248 | ELECTROSURGICAL INSTRUMENT AND METHOD OF USE - Embodiments of the invention provide an electrosurgical jaw structure comprising first and second opposing jaws one or both of which include 3D variable resistance bodies. The jaw structure can be part of the working end of a surgical instrument. In one embodiment, the jaws can comprise first and second energy-delivery jaw surfaces having first and second 3D variable resistance bodies, with the jaw surface configured to be coupled to an Rf source. The 3D variable resistance bodies can define different temperature-resistance curves. The 3D bodies can be configured to control ohmic heating of tissue by modulating the delivery of Rf energy to tissue. Jaw structures having the 3D bodies can be used to engage and produce high strength tissue welds in targeted tissue including tissue volumes having varying tissue types. Such jaw structures can be configured to simultaneously apply different energy levels to each tissue type within the tissue volume. | 08-02-2012 |
20120203217 | System and Method for Ablation Procedure Monitoring Using Electrodes - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue. One or more electrodes are disposed on the antenna assembly and are configured to be positioned relative to tissue upon insertion of the antenna assembly into tissue. The one or more electrodes are configured to generate a feedback signal in response to an electrical signal supplied thereto from the power source. The feedback signal corresponds to the proximity of tissue relative to the at least one electrode and is configured to be compared to a predetermined parameter to determine a depth of the insertion of the antenna assembly into tissue. The power source is configured to control the delivery of microwave energy to the antenna assembly based on the comparison. | 08-09-2012 |
20120203218 | Dual Antenna Microwave Resection and Ablation Device, System and Method of Use - A system for generating microwave energy includes a microwave generator that generates first and second microwave signals, a transmission line and a dual antenna microwave device. The transmission line transmits the first and second microwave signals to the microwave device. The microwave device includes a first antenna proximal a second antenna and a dual-sided choke positioned therebetween. The first antenna receives the first microwave signal from the transmission line between a first conductor and a second conductor and the second antenna receives the second microwave signal between the second conductor and a third conductor. The dual-sided choke includes a first and a second antenna choke circuit. The first antenna choke circuit limits the propagation of electromagnetic fields generated by the first antenna toward the second antenna and the second antenna choke circuit limits the propagation of electromagnetic fields generated by the second antenna toward the first antenna. | 08-09-2012 |
20120203219 | FINE DISSECTION ELECTROSURGICAL DEVICE - An electrosurgical wand. At least some of the illustrative embodiments are electrosurgical wands including an elongate shaft that defines a handle end and a distal end, a first discharge aperture on the distal end of the elongate shaft, a first active electrode of conductive material disposed on the distal end of the elongate shaft, the first active electrode has an edge feature, a first return electrode of conductive material disposed a substantially constant distance from the first active electrode, and an aspiration aperture on the distal end of the elongate shaft fluidly coupled to a second fluid conduit. | 08-09-2012 |
20120209258 | SYSTEMS AND METHODS FOR ENDOMETRIAL ABLATION - A system for treating uterine tissue comprises an elongated introducer with a working end configured for endometrial ablation. The working end includes an expandable seal for positioning in a patient's cervical canal and an actuator pump mechanism carried by a proximal handle coupled to the introducer for expanding the seal. The handle optionally includes a mechanism for simultaneously expanding the seal and deploying a treatment element on the working end of the introducer. | 08-16-2012 |
20120209259 | METHODS FOR TREATING AIRWAYS - This relates to treating an asthmatic lung and more particularly, relates to advancing a treatment device into the lung and treating the lung with the device. This also includes additional steps of treating the airway wall, applying energy or heat to the airway wall in an asthmatic lung. | 08-16-2012 |
20120215213 | Monitoring and controlling energy delivery of an electrosurgical device - A method is disclosed for delivering energy to a region of tissue within a patient's body using a medical treatment system. The medical treatment system comprises an energy delivery device coupled to an energy source. Energy is delivered through the energy delivery device positioned within the patient's body. An energy delivery parameter associated with the delivery of energy by the medical treatment system is monitored and if one or more values of the energy delivery parameter exceed a predetermined magnitude threshold, one or more errors are detected. The extent of the detected errors is determined or assessed and the delivery of energy is controlled if the extent of the errors detected exceeds a sensitivity threshold before the expiry of a predetermined time period. | 08-23-2012 |
20120220994 | INVASIVE ABLATION PROBE WITH NON-CORING DISTAL TIP - A medical device for delivering RF energy to a target tissue region includes an elongate delivery cannula having a lumen in communication with a distal opening. A deployment member is positioned and longitudinally movable in the lumen. An array of electrode elements are secured to a distal end of the deployment member, the deployment member being movable from a delivery position, in which the electrode elements are positioned within the lumen, to a deployed position, in which the electrode elements extend distally out of the cannula distal opening. A sealing member formed from a bio-compatible material sufficiently rigid to penetrate solid body tissue partially extends from, and substantially seals, the distal cannula opening when the deployment member is in the delivery position. | 08-30-2012 |
20120220995 | SYSTEM AND METHOD FOR TISSUE ABLATION - A tissue ablation device comprises first and second electrodes of opposite polarities, the first electrode being mounted to a first elongated member for movement relative to the second electrode for separation therefrom by a desired distance. A method of ablating a tissue comprises inserting first and second electrodes to desired initial positions relative to a tissue mass to be ablated and applying electrical energy to the first and second electrodes to ablate a first portion of tissue between the first and second electrodes in combination with the step of applying electrical energy to desired second positions separated from the desired initial positions by a distance selected to transfer electrical energy around the first portion of tissue through a second portion of tissue to be ablated, the second portion of tissue surrounding the first portion of tissue. | 08-30-2012 |
20120220996 | DEVICES AND METHODS FOR TREATMENT OF LUMINAL TISSUE - Devices and methods are provided for treatment of tissue in a body lumen with an electrode deployment device. Embodiments typically include a device with a plurality of electrodes having a pre-selected electrode density arranged on the surface of a support. The support may comprise a non-distensible electrode backing that is spirally furled about an axis and coupled to an expansion member such as an inflatable elastic balloon. In some embodiments, the balloon is inflated to selectively expose a portion of the electrode surface while maintaining the electrode density. | 08-30-2012 |
20120226271 | Vacuum Ablation Apparatus and Method - Ablation devices and associated methods are provided for use in ablating a target tissue, such as a cystic lesion. The ablation apparatus includes an integral or connected elongate probe and a deployable structure that is axially slidable along the outer surface of the electrode. The electrode can be disposed at the probe's distal end region for ablating tissue when the electrode(s) are activated to create an ablated margin of tissue at least partially surrounding the target tissue. Suction can be applied with a vacuum source operably connected to the proximal end region of the deployable structure. A target tissue, such as a cystic lesion, can be drawn against the surface of the electrical probe. | 09-06-2012 |
20120232544 | SYSTEMS FOR THERMAL-FEEDBACK-CONTROLLED RATE OF FLUID FLOW TO FLUID-COOLED ANTENNA ASSEMBLY AND METHODS OF DIRECTING ENERGY TO TISSUE USING SAME - A method of directing energy to tissue using a fluid-cooled antenna assembly includes the initial step of providing an energy applicator. The energy applicator includes an antenna assembly and a hub providing at least one coolant connection to the energy applicator. The method also includes the steps of providing a coolant supply system including a fluid-flow path fluidly-coupled to the hub for providing fluid flow to the energy applicator, positioning the energy applicator in tissue for the delivery of energy to tissue when the antenna assembly is energized, and providing a thermal-feedback-controlled rate of fluid flow to the antenna assembly when energized using a feedback control system operably-coupled to a flow-control device disposed in fluid communication with the fluid-flow path. | 09-13-2012 |
20120232545 | SYSTEM AND METHOD FOR ENDOMETRIAL ABLATION - Methods, systems and devices for evaluating the integrity of a uterine cavity. A method comprises introducing transcervically a probe into a patient's uterine cavity, providing a flow of a fluid (e.g., CO | 09-13-2012 |
20120232546 | Radiofrequency Perforation Apparatus - A radiofrequency perforation apparatus for creating a channel at a target location in a body of a patient, the radiofrequency perforation apparatus comprising: a substantially tubular member defining a tubular member lumen; an end member partially positioned within the tubular member lumen at a distal end of the tubular member, the end member including an electrode; and an electrical insulator extending along the substantially tubular member. | 09-13-2012 |
20120239019 | INDEPENDENT PASSIVE COOLING DESIGN FOR ABLATION CATHETERS - A medical system, including a catheter having a fluid flow path and a distal portion separated from the fluid flow path; a plurality of electrodes coupled to the distal portion; at least one temperature sensor coupled to the distal portion; a heat sink in thermal communication with each electrode and in fluid communication with the fluid flow path; a radiofrequency signal generator in communication with the plurality of electrodes; and a fluid source in fluid communication with the fluid flow path. | 09-20-2012 |
20120239020 | Geo-Location Addition to Electrosurgical Generator - A system and method for determining the location of an electrosurgical generator using a geo-location device within the generator. The geo-location device determines the location of the generator and the controller sets a default language of the generator based on the determined location. The default language may be overridden by a user when necessary. The geo-location device is coupled to a communication port. The communication port allows for a wireless signal to be sent upon the generator being reported stolen or for tracking location of the generators. The communication port is coupled to the controller to allow for remote disablement, for example in response to the generator being stolen. Alternatively, the controller may disable the generator when the geo-location device determines that the generator has moved outside a predetermined location. | 09-20-2012 |
20120239021 | MAGNETICALLY COUPLING DEVICES FOR MAPPING AND/OR ABLATING - Systems for ablating tissue can include a pair of electrode assemblies. The electrode assemblies can automatically align on opposing sides of operative tissue due to magnetic interaction. One assembly can move automatically in response to the other assembly due to the magnetic interaction. Some systems are capable of cooling the electrode assemblies during ablation procedures. | 09-20-2012 |
20120239022 | ELECTROMAGNETIC PATHOLOGIC LESION TREATMENT SYSTEM AND METHOD - A method of treating a pathologic legion, such as an intravascular thrombus, is disclosed. The method comprises providing a guide wire and catheter with at least one inductive element within a blood vessel to a distal location associated with the pathologic lesion; and providing electromagnetic energy via at least one inductive element to the pathologic lesion to cause thrombolysis. Medicated magnetic particles can be endovascularly localized and concentrated to the vascular territory affected by the pathologic lesion. | 09-20-2012 |
20120239023 | Method of Using Vasoconstrictive Agents During Energy-Based Tissue Therapy - A mammal undergoing an energy-based therapy is treated by administering at least one vasoconstrictive agent to the mammal prior to or during the procedure. The at least one vasoconstrictive agent is added in amounts sufficient to reduce or prevent vasodilation. This treatment method increases or promotes the size of the coagulation zone created after energy-based therapy. | 09-20-2012 |
20120245575 | USER INTERFACE AND NAVIGATIONAL TOOL FOR REMOTE CONTROL OF AN ANCHORED RF ABLATION DEVICE FOR DESTRUCTION OF TISSUE MASSES - The invention provides a system and method for a practitioner to interact remotely with a radiofrequency ablation device via a graphical user interface (GUI) which displays a hierarchical system of menu and submenu choices prior to and during a surgical procedure to ablate and coagulate a tissue mass such as a fibroid tumor without breaking the sterile field of the surgical procedure. The inventive system comprises an ablation device, a computer software program, a GUI, a navigational tool for scrolling and selecting through a series of menu and submenu choices by the practitioner displayed on the GUI, and a foot pedal used by the practitioner for operating the ablation device to ablate and coagulate a tissue mass of a patient. The menus and submenus allow for entry of patient data as well as for the control of certain parameters and operation of the ablation device. | 09-27-2012 |
20120245576 | MERGED IMAGE USER INTERFACE AND NAVIGATIONAL TOOL FOR REMOTE CONTROL OF SURGICAL DEVICES - The invention provides a system for remote control of a surgical device, comprising a first imaging device of a first type having a first image output. The first imaging device is positioned to image an area being subject to surgery. A second imaging device of a second type has a second image output. The second imaging device is positioned to image the area being subjected to surgery. A computer is coupled to receive the first and second image outputs and merge the first and second image outputs into a unitary image output representing a unitary image. Software, resident in the computer generates a graphic user interface including a menu and submenu items. A surgical device is coupled to the computer. Software, resident in said computer, receives and displays information received from the surgical device and/or controls the operation of the surgical device. A display as coupled to the computer for displaying the graphic user interface and the unitary image. | 09-27-2012 |
20120245577 | COOLING SYSTEMS FOR ELECTRODE ARRAYS - A medical device is disclosed, including a catheter body; an electrode array coupled to the catheter body, the electrode array being transitionable from a substantially linear configuration to a substantially helical configuration; and a fluid conduit coupled to the catheter body spaced apart from the electrode array, wherein the fluid conduit is transitionable from a substantially linear configuration to a substantially helical configuration. The device may include a fluid source in communication with the fluid conduit and a radiofrequency signal generator coupled to the electrode array. | 09-27-2012 |
20120245578 | ELECTROSURGICAL DEVICE HAVING FLOATING-POTENTIAL ELECTRODE FOR OBSTRUCTION REMOVAL - Disclosed herein are embodiments of an electrosurgical device that include one or more floating electrodes and are specifically adapted to remove, cut, resect, ablate, vaporize, denaturize, drill, coagulate and form lesions in soft tissues, with or without externally supplied liquids, preferably in combination with a resectoscope, particularly in the context of urological, gynecological, laparoscopic, arthroscopic, and ENT procedures. Specific adaptations for urological and gynecological applications, for example kidney stone removal and BPH treatment, are also described. | 09-27-2012 |
20120245579 | HIGH FREQUENCY SURGERY GENERATOR - A high frequency surgery generator having an output circuit and a power oscillator for generating an HF output voltage. The power oscillator is designed to excite the output circuit at a first excitation frequency, which corresponds to a resonant frequency of the output circuit, in a first operating mode and to excite the output circuit at a second excitation frequency which differs from the first excitation frequency, which does not correspond to the resonant frequency of the output circuit, in a second operating mode. | 09-27-2012 |
20120253339 | RADIO FREQUENCY-BASED SURGICAL IMPLANT FIXATION APPARATUS - A radio frequency-based surgical implant fixation apparatus is provided and includes a housing and a shaft that is operably coupled to housing. A longitudinal axis is defined through the shaft. The housing is adapted to connect to a source of electrosurgical energy. An approximator assembly has an elongated rod that is coaxially coupled to the shaft and is configured to reciprocate therethrough from an extended position to a retracted position. A plurality of delivery arms is operably coupled to a distal end of the elongated rod. The delivery arms are configured to releasably receive a portion of a surgical implant and selectively connect to the energy source to transmit electrosurgical energy to the surgical implant to fuse the surgical implant to tissue upon actuation thereof. | 10-04-2012 |
20120253340 | COMPOSITE RF CURRENT ATTENUATOR FOR A MEDICAL LEAD - A composite RF current attenuator for a medical lead includes a conductor having a distal electrode contactable to biological cells, a bandstop filter in series with the lead conductor for attenuating RF currents flow through the lead conductor at a selected center frequency or across a range of frequencies about the center frequency, and a lowpass filter in series with the bandstop filter and forming a portion of the lead conductor. The bandstop filter has a capacitance in parallel with a first inductance. In a preferred form, the lowpass filter includes a second inductance in series with the bandstop filter, wherein the values of capacitance and inductances for the composite RF current attenuator are selected such that it attenuates MRI-induced RF current flow in an MRI environment. | 10-04-2012 |
20120253341 | Combined Frequency Microwave Ablation System, Devices and Methods of Use - A system for delivering electrosurgical energy, the system including a housing having an antenna attached to the distal end thereof configured to receive a microwave signal and radiate energy at two or more wavelengths and a microwave generator operably connecting to the antenna that provides the microwave signal to the antenna. The microwave generator generates a combined microwave signal containing microwave energy having at least a first and a second wavelength wherein the first and second wavelengths resonant the antenna. | 10-04-2012 |
20120259324 | Microwave Tissue Dissection and Coagulation - An surgical instrument configured to concurrently dissect and coagulate tissue. In an embodiment, the surgical instrument comprises a handle and a shaft extending distally from the handle. The shaft includes an outer hypotube, a lumen coaxially-disposed within the hypotube and extending beyond a distal end thereof, a coaxial feedline coaxially-disposed within the lumen, and having an inner conductor and an outer conductor disposed coaxially about the inner conductor, and a coolant tube coaxially-disposed between the lumen and the coaxial feedline to form an inflow conduit and an outflow conduit. The instrument further includes a dissecting head assembly coupled to a distal end of the shaft. The dissecting head assembly includes a dielectric core having a substantially planar radiating surface and at least one non-radiating surface, a reflective coating disposed on the at least one non-radiating surface of the dielectric core, and a blade extending from the radiating surface. | 10-11-2012 |
20120259325 | Laparoscopic Instrument with Attachable Energy End Effector - A surgical device comprises an elongate shaft defining a longitudinal axis. The shaft comprises a distal end and a proximal end. An arm medially deflectable and comprises a mating feature. An elongate pin is positioned medially relative the arm. The elongate pin is axially slideable relative the arm between a locked position preventing medial deflection of the arm and an unlocked position allowing medial deflection of the arm. An energy based surgical end effector is selectively attachable and detachable to the mating feature of the arm. The end effector may include a torque arm to engage the elongate shaft. | 10-11-2012 |
20120259326 | FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS - A method for forming a resonating structure within a body lumen, the method including advancing a flexible microwave catheter into a body lumen of a patient, the flexible microwave catheter including a radiating portion at the distal end of the flexible microwave catheter, the radiating portion configured to receive microwave energy, and at least one centering device proximate the radiating portion configured to deploy radially outward from the flexible microwave catheter; positioning the radiating portion near tissue of interest; deploying the at least one centering device radially outward from the flexible microwave catheter within the body lumen such that a longitudinal axis of the radiating portion is substantially parallel with and at a fixed distance from a longitudinal axis of the body lumen near the targeted tissue; and delivering microwave energy to the radiating portion such that a circumferentially balanced resonating structure is formed with the body lumen. | 10-11-2012 |
20120259327 | Method and System for Using Common Subchannel to Assess the Operating Characteristics of Transducers - A system and method for using a common subchannel to assess operating characteristics of one of a plurality of transducers coupled to said subchannel is disclosed. The of transducers are divided into subsets, with each subset is coupled to a subchannel. The system is configured to activate a selected transducer on the subchannel and the subchannel delivers operational information on the activated transducer. The present invention reduces the number of subchannels required to collect information on the plurality of transducers. The present invention permits a more compact ablation device to be constructed based on the invention's ability to reduce the total number of subchannels required to collect transducer information. | 10-11-2012 |
20120259328 | Leaky-Wave Antennas for Medical Applications - A device for directing energy to a target volume of tissue includes a proximal portion including a first antenna assembly extending therethrough, and a distal portion including a second antenna assembly. The first antenna assembly includes a leaky-wave antenna assembly having an outer conductor and an inner conductor disposed within the outer conductor. The distal portion of the device is attached to the inner conductor. The outer conductor includes a plurality of radiating apertures defined in a distal portion thereof and is configured for radiating energy substantially uniformly along a longitudinal axis of the proximal portion. | 10-11-2012 |
20120265192 | ARRANGEMENT AND INTERFACE FOR RF ABLATION SYSTEM WITH ACOUSTIC FEEDBACK - A system for ablation with acoustic feedback comprises: a catheter which includes an elongated catheter body; at least one ablation element to ablate a targeted tissue region; and a pulse-echo ultrasonic transducer arranged to emit and receive an acoustic beam along a centroid in a beam direction, at a transducer beam angle of between about 30 degrees and about 60 degrees relative to a distal direction of the longitudinal axis at a location of intersection between the longitudinal axis and the beam direction of the centroid of the acoustic beam of the ultrasonic transducer, wherein the transducer transmits and receives acoustic pulses to provide lesion information in the targeted tissue region; an ablation power subsystem; an ultrasonic transmit and receive subsystem to operate the ultrasonic transducer; a control subsystem to control operation of the ablation power subsystem and the ultrasonic transmit and receive subsystem; and a display. | 10-18-2012 |
20120265193 | Electrosurgical Methods and Devices Employing Phase-Controlled Radiofrequency Energy - This disclosure relates generally to electrosurgical methods and devices. In one embodiment, an electrosurgical device is provided suitable for applying phase controlled RF energy to a treatment site. The electrosurgical device comprises a multi-electrode electrosurgical probe electrically coupled to a plurality of RF generators. Also provided are methods of use of such an electrosurgical device, as well as other electrosurgical devices. The methods and devices disclosed herein find utility, for example, in the field of medicine. | 10-18-2012 |
20120271295 | Method of Using Vasoconstrictive Agents During Energy-Based Tissue Therapy - A mammal undergoing an energy-based therapy is treated by administering at least one vasoconstrictive agent to the mammal prior to or during the procedure. The at least one vasoconstrictive agent is added in amounts sufficient to reduce or prevent vasodilation. This treatment method increases or promotes the size of the coagulation zone created after energy-based therapy. | 10-25-2012 |
20120271296 | RADIOFREQUENCY ABLATION DEVICE - A RF ablation device includes a probe assembly that has an elongate cannula having a lumen disposed interiorly of an external wall of the cannula. The elongate cannula includes a plurality of slots formed within the external wall that provide access to the lumen. The probe assembly includes an electrode member that is slidably disposed within the elongate cannula, the electrode member including a plurality of tines configured for passage through the plurality of slots. The slots are disposed in a staggered arrangement or pattern about the external wall of the cannula. The staggered arrangement of slots may be used in a monopolar or bipolar arrangement of the electrodes on the cannula. A bipolar arrangement of electrodes using the staggered configuration produces larger ablation areas in a shorter period of time as compared to prior designs. | 10-25-2012 |
20120271297 | MICROWAVE ANTENNA ASSEMBLY HAVING A DIELECTRIC BODY PORTION WITH RADIAL PARTITIONS OF DIELECTRIC MATERIAL - A microwave antenna assembly includes first and second elongated conductors, and a dielectric body portion. The first elongated conductor is associated with a first radiating portion at least partially along the length thereof. A second elongated conductor is disposed within the first elongated conductor and is associated with a second radiating portion at least partially along the length thereof. The dielectric body portion is disposed along the length of at least one of the first and second elongated conductors and the dielectric body portion includes two or more radial partition of dielectric material having difference dielectric constants. | 10-25-2012 |
20120271298 | Method of Improved Vein Closure - There are disclosed methods of vein closure. In an embodiment, a method includes elevating a leg of a patient during a vein closure procedure so as to effect substantial emptying of the vein. The method also includes applying radio-frequency energy to a vein within the leg of the patient to cause the vein closure. In another embodiment, a method includes elevating a leg of a patient during a vein closure procedure within a range of about 30 degrees to about 45 degrees from a horizontal position. The method also includes applying radio-frequency energy to a vein within the leg of the patient. In one embodiment, a method includes elevating a leg, and emptying of a segment of the vein prior to applying radio-frequency energy. In another embodiment, the method includes elevating a leg of a patient, and applying energy to a vein. Other embodiments are also disclosed. | 10-25-2012 |
20120271299 | METHOD AND DEVICES FOR COAGULATION OF TISSUE - Methods and devices described herein facilitate improved treatment of body organs. | 10-25-2012 |
20120277737 | DEVICES AND METHODS FOR REMOTE TEMPERATURE MONITORING IN FLUID ENHANCED ABLATION THERAPY - Devices and methods for monitoring the temperature of tissue at various locations in a treatment volume during fluid enhanced ablation therapy are provided. In one embodiment, an ablation device is provided having an elongate body, at least one ablation element, and at least one temperature sensor. The elongate body includes a proximal and distal end, an inner lumen, and at least one outlet port to allow fluid to be delivered to tissue surrounding the elongate body. The at least one ablation element is configured to heat tissue surrounding the at least one ablation element. The at least one temperature sensor can be positioned a distance away from the at least one ablation element and can be effective to output a measured temperature of tissue spaced a distance apart from the at least one ablation element such that the measured temperature indicates whether tissue is being heating to a therapeutic level. | 11-01-2012 |
20120277738 | LEAKY-WAVE ANTENNAS FOR MEDICAL APPLICATIONS - A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform. | 11-01-2012 |
20120277739 | ELECTROSURGICAL MEDICAL SYSTEM AND METHOD - A method for mitigating leakage in an RF electrosurgical generator includes delivering an RF signal from an RF electrosurgical generator to an electrosurgical electrode by way of a patient box; providing a balanced and symmetrical shielded transmission line coupling said electrosurgical generator disposed in a first housing to said patient box disposed in a second, different housing; providing a common mode choke in said patient box, said common mode choke including an output winding and a return winding, said output winding and said return winding spaced apart and in parallel to maintain a desired impedance, said output winding comprising a wire carrying said RF signal as an output signal and said return winding carrying a return signal from a return electrode; and directing a common mode signal from said RF signal to said common mode choke thereby blocking said common mode signal. | 11-01-2012 |
20120283718 | LIGHT ATTACHMENT DEVICE FOR ELECTROSURGICAL PENCIL AND ELECTROSURGICAL PENCIL ATTACHMENTS - A light attachment device for removable attachment to an electrosurgical pencil and/or an electrosurgical pencil attachment such as a shroud for an electrosurgical pencil. The light attachment device may be automatically turned on and off in conjunction with the activation and deactivation of the electrosurgical pencil and/or electrosurgical pencil attachment. | 11-08-2012 |
20120283719 | CATHETER WITH TISSUE PROTECTING ASSEMBLY - A medical probe includes an elongate member having a proximal end and a distal end, an ablative element mounted to the distal end of the elongate member, and a cage assembly mounted to the distal end of the elongate member, the cage assembly at least partially covers the ablative element. A method of treating tissue in a body includes inserting an ablative element in the body, placing the ablative element adjacent the tissue, and maintaining a distance between the ablative element and the tissue using a protective catheter element that circumscribes at least a portion of the ablative element. | 11-08-2012 |
20120289954 | MICRO PLASMA HEAD FOR MEDICAL APPLICATIONS - According to the current invention a medical catheter for plasma ablation within a body cavity is provided, comprising: an elongated catheter having: an input gas lumen; an output gas lumen; and electrical energy supply cable; a gas supply system, supplying gas to the input gas lumen; a gas pump, pumping spent gas from the output gas lumen; a plasma head at distal end of said elongated catheter and situated in proximity to body part to be ablated, the plasma head comprising: an outer tube defining plasma space between the outer tube and the body part to be ablated, wherein input gas enters the plasma space through the input gas lumen, and spent gas is pumped out of the plasma space through the output gas lumen; and a plasma electrode, receiving electrical power from the electrical energy supply cable and generating plasma in the plasma space. | 11-15-2012 |
20120296327 | Method of and Apparatus for Positioning and Maintaining the Position of Endoscopic Instruments - The present invention provides an apparatus for, and a method of, accurate positioning of endoscopic instruments. Accurate positioning of the instruments is accomplished through the inclusion of a steering ability within the device. After the endoscopic instrument is properly positioned, the present invention may use rapid exchange technology, soft locks, and mechanical locks to maintain the position of the endoscopic instrument. Rapid exchange technology is used to minimize displacement forces present on the guidewire or catheters. Soft locks and mechanical locks resist movements caused by displacement forces. | 11-22-2012 |
20120303012 | TREATMENT APPARATUS WITH FREQUENCY CONTROLLED TREATMENT DEPTH - An electro-surgical system actively maintains an optimal heating profile at the electrode-patient contact surface under varying load resistivity, thereby reducing the risk of burns and maximizing patient comfort. A set of temperature sensors is integrated within the electrode assembly of the electrosurgical system. The sensors are located both at the center and the edges of the electrode. The sensors are thermally coupled to the electrode-patient contact surface. As RF power is applied, a control loop monitors the temperature at the center and edges of the electrode. If the edge temperature of the electrode is high compared to its center temperature, then the control loop increases the operating frequency, effectively driving heat towards the center of the electrode. Conversely, if the edge temperature of the electrode is low compared to its center temperature, then the control loop decreases the operating frequency, effectively driving heat towards the edges of the electrode. | 11-29-2012 |
20120303013 | RADIO FREQUENCY ABLATION SERVO CATHETER AND METHOD - A system that interfaces with a workstation endocardial mapping system allows for the rapid and successful ablation of cardiac tissue. The system allows a physician to see a representation of the physical location of a catheter in a representation of an anatomic model of the patient's heart. The workstation is the primary interface with the physician. A servo catheter having pull wires and pull rings for guidance and a servo catheter control system are interfaced with the workstation. Servo catheter control software may run on the workstation. The servo catheter is coupled to an RF generator. The physician locates a site for ablation therapy and confirms the location of the catheter. Once the catheter is located at the desired ablation site, the physician activates the RF generator to deliver the therapy. | 11-29-2012 |
20120303014 | ELECTROSURGICAL DEVICES WITH DIRECTIONAL RADIATION PATTERN - A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding | 11-29-2012 |
20120303015 | ELECTRODE NEEDLE AND HEMOSTATIC DEVICE INCLUDING THE SAME - An electrode needle includes an electrode needle body, a metal tube, and an outer insulating tube. The electrode needle body is connected to a positive electrode of an RF generator. The metal tube is fixed around the electrode needle body and insulated from the electrode needle body. The metal tube is connected to a negative electrode of the RF generator. The outer insulating tube surrounds an upper part of the metal tube to expose a lower part of the metal tube. The outer insulating tube is movable longitudinally along the electrode needle body to vary an exposed area of the metal tube. At least one of a position, an area, and a cauterization speed of a site to be cauterized is controlled by varying the exposed area of the metal tube. | 11-29-2012 |
20120303016 | ELECTROSURGICAL ASSEMBLY AND ELECTROSURGICAL INSTRUMENT - An electrosurgical assembly is disclosed having an electrosurgical instrument, a detection device for detecting a predetermined constituent of the atmosphere in the region of a treatment site and a treatment unit, which can be connected to the instrument and a current generator for providing RF energy. The treatment unit includes a mechanism for influencing the treatment process depending on an output signal of the detection device. | 11-29-2012 |
20120303017 | MICROWAVE ABLATION GENERATOR CONTROL SYSTEM - A microwave energy delivery and measurement system, including a microwave energy source configured to delivery microwave energy to a microwave energy delivery device, a measurement system configured to measure at least one parameter of the microwave energy delivery device and a switching network configured to electrically isolate the microwave energy source and the measurement system. The measurement system is configured to actively measure in real time at least one parameter related to the microwave energy delivery device. | 11-29-2012 |
20120310228 | Modified Wet Tip Antenna Design - A microwave antenna including a feedline, a radiating section, an inflow hypotube, a puck, a transition collar and a sleeve. The feedline includes a coaxial cable including an inner and outer conductor, and a dielectric disposed therebetween. The radiating section includes a dipole antenna coupled to the feedline and a trocar coupled to the distal end of the dipole antenna. The inflow hypotube is disposed around the outer conductor and configured to supply fluid to the radiating portion. The puck includes at least two ribs with inflow slots defined between two adjacent ribs. The transition collar is coupled to the distal end of the inflow hypotube and the first end of the puck. The transition collar includes at least two outflow slots configured to receive fluid from a distal end of the inflow hypotube and to transition the fluid from the outflow slots to a distal end of the radiating section. The sleeve overlays the two outflow slots of the transition collar, the puck and at least the distal portion of the radiating section. The sleeve forms a fluid-tight seal with the transition collar proximal the outflow slots and defines a first gap for transitioning the fluid to exit the outflow slots of the transition collar to the distal end of the radiating section. | 12-06-2012 |
20120310229 | Surgical Device with DC Power Connection - A system and method for providing additional power to a hand-held surgical device from a supplemental DC power supply. The hand-held surgical device includes a generator and an internal power supply. The internal power supply is a battery or a capacitor either which can withstand a high-temperature and/or a low-temperature sterilization procedure while within the hand-held surgical device. The supplemental DC power supply can provide alone or in combination with the internal power supply sufficient power to the generator to perform an electrosurgical procedure. The supplemental DC power supply is connected through a detachable cord to the hand-held surgical device. The DC power supply may be outside a sterile surgical environment. | 12-06-2012 |
20120310230 | COAXIAL DUAL FUNCTION PROBE AND METHOD OF USE - An energy delivery probe for use in tissue ablation and method of use is presented. The energy delivery device has at least a first energy delivery member and a second energy delivery member that have handle members positioned along a longitudinal axis, each handle member having a proximal and distal end. The distal end of the first handle member is releasably coupled to the proximal end of the second handle member and a portion of each member is defined in a coaxially surrounding relationship to each other along the longitudinal axis. The method of using the probe involves identifying a tissue to be ablated, providing the energy delivery probe, inserting at least a portion of the energy delivery probe into the identified tissue, delivering electrical energy through the energy delivery probe to the identified tissue, and ablating the identified tissue such that at least a first ablation zone is formed. | 12-06-2012 |
20120310231 | TREATING AND PREVENTING NAIL DISORDERS - A method of treating or preventing a nail disorder comprises administering to a subject having/suffering from or susceptible/predisposed to, said nail disorder, a therapeutically effective amount or dose of microwave energy. | 12-06-2012 |
20120310232 | SYSTEM AND METHOD FOR TREATING A TISSUE USING MULTIPLE ENERGY TYPES - System and method for treating a tissue using multiple energy types are provided. A system may include at least two flat transducers configured to produce sound waves at surface and inner layer of a skin A plurality of radio frequency (RF) electrodes may be configured to emit a plurality of RF signals. A control unit is to control the transducers such that an interference of the sound waves sustains a predefined level of energy at a specific tissue below the surface of the skin Other embodiments are described and claimed. | 12-06-2012 |
20120310233 | SYSTEMS, APPARATUSES, AND METHODS FOR TREATING TISSUE AND CONTROLLING STENOSIS - Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. The system, delivery devices, and methods can damage tissue and manage scarring and stenosis. | 12-06-2012 |
20120310234 | TISSUE IMPEDANCE MEASUREMENT USING A SECONDARY FREQUENCY - A microwave ablation system includes a generator including a first energy source, a second energy source and a diplexer, the diplexer multiplexes a first energy from the first energy source and a second energy from the second energy source. The system also includes a cable including a center conductor and an outer sheath where the multiplexed energy is transmitted through the center conductor. In addition an antenna is provided that is operable to receive the multiplexed energy from the center conductor and to deliver the multiplexed energy to a region of tissue. The outer sheath acts as a return path of the second energy to the second energy source. A sensor is also provided that measures at least one parameter of the second energy generated by the second energy source and the second energy returned from the region of tissue. | 12-06-2012 |
20120310235 | TREATMENT OF SKIN BY SPATIAL MODULATION OF THERMAL HEATING - Treating skin can include delivering a beam of radiation to a target region of the skin to cause a zone of thermal injury including a lateral pattern of varying depths of thermal injury distributed along the target region. The lateral pattern includes at least one first sub-zone of a first depth of thermal injury laterally adjacent to at least one second sub-zone of a second depth of thermal injury. The first depth is greater than the second depth. The at least one first sub-zone of the first depth and the at least one second sub-zone of the second depth extend from a surface of the target region of the skin to form a substantially continuous surface thermal injury. The at least one first sub-zone of the first depth and the at least one second sub-zone of the second depth are substantially heated to at least a critical temperature. | 12-06-2012 |
20120310236 | NEEDLE AND TINE DEPLOYMENT MECHANISM - A needle electrode deployment shaft includes a central member and a plurality of needle electrodes. The central member has a plurality of needle advancement channels formed therein. The needle electrodes are disposed within the advancement channels and each advancement channel terminates in a ramp portion which deflects the needles radially outwardly as they are axially advanced. The ramps may be spirally or acutely configured in order to increase the distance through which the needles may be bent as they are axially advanced. Additionally, the central member may have a radially reduced distal tip in order to decrease tissue insertion forces. | 12-06-2012 |
20120316551 | Triaxial Antenna for Microwave Tissue Ablation - An improved antenna for microwave ablation uses a triaxial design which reduces reflected energy allowing higher power ablation and/or a smaller diameter feeder line to the antenna. | 12-13-2012 |
20120316552 | SYSTEMS, ASSEMBLIES, AND METHODS FOR TREATING A BRONCHIAL TREE - Systems, assemblies, and methods to treat pulmonary diseases are used to decrease nervous system input to distal regions of the bronchial tree within the lungs. Treatment systems damage nerve tissue to temporarily or permanently decrease nervous system input. The treatment systems are capable of heating nerve tissue, cooling the nerve tissue, delivering a flowable substance that cause trauma to the nerve tissue, puncturing the nerve tissue, tearing the nerve tissue, cutting the nerve tissue, applying pressure to the nerve tissue, applying ultrasound to the nerve tissue, applying ionizing radiation to the nerve tissue, disrupting cell membranes of nerve tissue with electrical energy, or delivering long acting nerve blocking chemicals to the nerve tissue. | 12-13-2012 |
20120316553 | LIGHT EMITTING ELECTROSURGICAL SCALPEL - An improved electrosurgical scalpel, with light emission, for generating electrical signals intended for applications to the body of a patient via an electrosurgical electrode is provided. An electrosurgical scalpel includes a handle with a receptacle portion of a conductive member for mounting and retaining an electrode blade, a light source with a power source encapsulated within the handle and a means to direct the light emitted outwardly towards the electrode tip. Operation of a switch on the handle to an on position serves to complete a circuit, activating the light source and, thereby directing light through an opening or upper portion and out from the first end of the handle towards the distal end of the electrode blade. | 12-13-2012 |
20120323231 | ELECTROSURGICAL INSTRUMENT - An electrosurgical instrument includes an instrument shaft having a longitudinal axis, and an electrode assembly at one end of the shaft, the electrode assembly including first, second and third electrodes which are electrically insulated one from another by means of one or more insulation members. The instrument further includes first and second connections by which RF energy can be supplied to the instrument from an electrosurgical generator. The first electrode is movable longitudinally between an advanced position in which it extends from the instrument shaft and a retracted position in which it is less advanced with respect to the instrument shaft. When the first electrode is in its advanced position, the first and second connections are in electrical communication with the first and second electrodes. When moved to its retracted position, the first and second connections are caused to be in electrical communication with the second and third electrodes. | 12-20-2012 |
20120323232 | METHODS AND DEVICES TO TREAT NASAL AIRWAYS - Methods and devices for treating nasal airways are provided. Such devices and methods may improve airflow through an internal and/or external nasal valve, and comprise the use of mechanical re-shaping, energy application and other treatments to modify the shape, structure, and/or air flow characteristics of an internal nasal valve, an external nasal valve or other nasal airways. | 12-20-2012 |
20120323233 | Renovascular treatment device, system, and method for radiosurgically alleviating hypertension - A radiosurgical method for treating cardiorenal disease of a patient, the method including directing radiosurgery radiation from outside the patient towards one or more target treatment regions encompassing sympathetic ganglia of the patient so as to inhibit the cardiorenal disease. In an exemplary embodiment, the method further includes acquiring three dimensional planning image data encompassing the first and second renal arteries, planning an ionizing radiation treatment of first and second target regions using the three dimensional planning image data so as to mitigate the hypertension, the first and second target regions encompassing neural tissue of or proximate to the first and second renal arteries, respectively, and remodeling the target regions by directing the planned radiation from outside the body toward the target regions. | 12-20-2012 |
20120323234 | SURGICAL SYSTEM AND CONTROL PROCESS FOR A SURGICAL INSTRUMENT AND PROCESS FOR CONNECTING BODILY TISSUES - The invention relates to improving a surgical system for connecting bodily tissues, comprising a surgical instrument having two tool elements displaceable relative to each other, each comprising an HF electrode defining a minimum distance from each other, opposite each other, and facing one another in an approach setting of the tool elements, wherein in order for simple and secure connecting of the tissue parts to be connected to each other, the invention proposes that at least one of the HF electrodes is divided into at least two electrode segments and that the at least two electrode segments are electrically insulated from each other. | 12-20-2012 |
20120323235 | METHOD FOR TREATING AN ASTHMA ATTACK - Methods of increasing gas exchange performed by the lung by damaging lung cells, damaging tissue, causing trauma, and/or destroying airway smooth muscle tone with an apparatus inserted into an airway of the lung are disclosed. The damaging of lung cells, damaging tissue, causing trauma, and/or destroying smooth muscle tone with the apparatus may be accomplished via any one of or combinations of the following: heating the airway; cooling the airway; delivering a liquid to the airway; delivering a gas to the airway; puncturing the airway; tearing the airway; cutting the airway; applying ultrasound to the airway; and applying ionizing radiation to the airway. | 12-20-2012 |
20120330296 | SURGICAL INSTRUMENTATION FOR PERFORMING ENDOLUMINAL AND/OR TRANSLUMINAL ANASTOMOSIS - An Instrumentation for performing an endoluminal or transluminal anastomosis, comprises an anastomotic ring device including a proximal ring ( | 12-27-2012 |
20120330297 | Expandable Probe - An expandable probe and a method of delivering energy to a tissue using the expandable probe are provided. The expandable probe includes an elongate shaft having a proximal portion, a distal portion, a lumen extending at least partially therethrough and a longitudinal axis. The expandable probe also includes an arm operably connected to the distal portion. The arm has a first surface including an electrode extending over at least a portion of the first surface and the electrode is operably connectable to an energy source. The arm has a closed configuration and an expanded configuration where the arm in the closed configuration extends substantially parallel to the longitudinal axis and in the expanded configuration the arm extends away from the longitudinal axis. | 12-27-2012 |
20120330298 | SYSTEM AND METHOD OF TREATING ABNORMAL TISSUE IN THE HUMAN ESOPHAGUS - An ablation catheter system and method of use is provided to endoscopically access portions of the human esophagus experiencing undesired growth of columnar epithelium. The ablation catheter system and method includes controlled depth of ablation features and use of either radio frequency spectrum, non-ionizing ultraviolet radiation, warm fluid or microwave radiation, which may also be accompanied by improved sensitizer agents. | 12-27-2012 |
20120330299 | SYSTEMS AND METHODS FOR DELIVERING ENERGY TO PASSAGEWAYS IN A PATIENT - Systems and methods for delivering energy to passageways in a patient, such as airways in the lung of a patient for treating asthma. One embodiment of a method for delivering energy to a passageway comprises positioning an access device in a lung airway of a patient and advancing an elongated body of a treatment device along the access device until an energy delivery unit at a distal portion of the elongated body projects from the access device. The method can further include expanding the energy delivery unit such that energy delivery elements contact a sidewall of the airway and activating an energy supply coupled to the treatment device such that energy is delivered to the sidewall of the airway. A single person physically operates both the access device and the treatment device while expanding the energy delivery unit and activating the energy supply. | 12-27-2012 |
20120330300 | INTRAOSSEOUS NERVE DENERVATION METHODS - System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a radial opening at or near the distal end of the trocar. The system includes a curveable cannula sized to be received in the central channel, the curveable cannula comprising a curveable distal end configured to be extended laterally outward from the radial opening in a curved path extending away from the trocar. The curveable cannula has a central passageway having a diameter configured allow a probe to be delivered through the central passageway to a location beyond the curved path. | 12-27-2012 |
20120330301 | VERTEBRAL BONE NAVIGATION SYSTEMS - System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a radial opening at or near the distal end of the trocar. The system includes a curveable cannula sized to be received in the central channel, the curveable cannula comprising a curveable distal end configured to be extended laterally outward from the radial opening in a curved path extending away from the trocar. The curveable cannula has a central passageway having a diameter configured allow a probe to be delivered through the central passageway to a location beyond the curved path. | 12-27-2012 |
20120330302 | Microwave Antenna - According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port. | 12-27-2012 |
20120330303 | Hemostasis Device - A method and system for achieving hemostasis (the stoppage of bleeding) is described. RF (radio frequency) energy is used to ablate the surface of tissue to stop bleeding. The depth of destruction of the tissue can be controlled so as to desiccate and coagulate the tissue. In one implementation, an electrode carrier including bipolar electrodes is applied to the tissue, and RF energy transmitted through the bipolar electrodes to ablate the tissue. A layer of desiccated tissue can be created as well as coagulation of the tissue to achieve hemostasis. | 12-27-2012 |
20130006232 | METHODS OF THERAPEUTICALLY HEATING A VERTEBRAL BODY TO TREAT BACK PAIN - Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. | 01-03-2013 |
20130006233 | BASIVERTEBRAL NERVE DENERVATION - System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a radial opening at or near the distal end of the trocar. The system includes a curveable cannula sized to be received in the central channel, the curveable cannula comprising a curveable distal end configured to be extended laterally outward from the radial opening in a curved path extending away from the trocar. The curveable cannula has a central passageway having a diameter configured allow a probe to be delivered through the central passageway to a location beyond the curved path. | 01-03-2013 |
20130006234 | ENDOSCOPIC APPARATUS WITH INTEGRATED HEMOSTASIS DEVICE - An endoscope or other medical device includes an elongated shaft having a flexible proximal section, an articulatable distal region, and distal tip. The endoscope or other device includes an associated hemostasis device for treating internal bleeding during a contemporaneous medial procedure. Embodiments of the present invention may incorporate mechanical, chemical, and/or electrical techniques for performing hemostasis. | 01-03-2013 |
20130012935 | METHODS OF TREATING BACK PAIN - Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. | 01-10-2013 |
20130012936 | SYSTEM FOR HEATING A VERTEBRAL BODY TO TREAT BACK PAIN - Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. | 01-10-2013 |
20130012937 | DEVICE AND METHOD FOR RADIO FREQUENCY ABLATION (RFA) - A device for radio frequency ablation (RFA) of diseased tissue has
| 01-10-2013 |
20130018370 | VACUUM COAGULATION PROBES - Methods for using a surgical device integrating a suction mechanism with a coagulation mechanism for improving lesion creation capabilities. The device comprises an elongate member having an insulative covering attached about means for coagulating soft tissue. Openings through the covering expose regions of the coagulation-causing elements and are coupled to lumens in the elongate member which are routed to a vacuum source and a fluid source to passively transport fluid along the contacted soft tissue surface in order to push the maximum temperature deeper into tissue. | 01-17-2013 |
20130023867 | SYSTEM AND METHOD OF MATCHING IMPEDANCES OF AN ELECTROSURGICAL GENERATOR AND/OR A MICROWAVE GENERATOR - A system for performing a surgical procedure includes a source of energy, a surgical instrument, and an impedance matching network. The source of energy is an electrosurgical generator or a microwave generator. The surgical instrument is coupled to the source of energy and receives the energy therefrom. The surgical instrument is adapted to treat tissue with the energy. The impedance matching network is interposed along a path of the energy and matches an input impedance of the source of energy to an output impedance (or thereabouts). | 01-24-2013 |
20130023868 | SURGICAL INSTRUMENT WITH CONTAINED DUAL HELIX ACTUATOR ASSEMBLY - An apparatus comprises an end effector, an elongate shaft, and a handle assembly. The shaft includes an articulation section that is operable to deflect the end effector away from the longitudinal axis of the shaft. The handle assembly includes a rotary member positioned within an intermediate section of the handle assembly. The rotary member is rotatable about an axis that is parallel to the longitudinal axis of the shaft. The rotary member is operable to control the articulation section of the shaft. The rotary member may include opposing thread sections that simultaneously drive lead screws in opposite longitudinal directions, to thereby control the articulation section. The shaft may be rotatable relative to the handle assembly, and the apparatus may selectively lock or resist such rotation based on the articulation state of the articulation section. | 01-24-2013 |
20130023869 | Electrosurgical Apparatus With High Speed Energy Recovery - A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal generated by the power supply and a feedback signal generated in response to the application of energy to tissue. A discharge circuit is configured to control the discharge of the output of the power supply to an inductive load disposed in parallel with the output of the power supply based on the comparison between the output signal and the feedback signal. The discharge circuit provides a rapid response and time rate control of the delivered electrosurgical energy by controlling the power supply and delivered RF energy in real time, based on a feedback signal generated in response to the application of energy to tissue. | 01-24-2013 |
20130030426 | INTEGRATED ABLATION SYSTEM USING CATHETER WITH MULTIPLE IRRIGATION LUMENS - A catheter adapted for ablation has multiple dedicated irrigation tubings to supply fluid to their respective electrode or set of electrodes. The tubings provide parallel flow pathways through the catheter where irrigation fluid is delivered to irrigated tip and/or ring electrodes which can accomplish uni-polar or bi-polar ablation. Such separate and dedicated fluid pathways allow fluid to be delivered to the corresponding electrode or set of electrodes at different flow rates. An integrated ablation system using such catheter has an ablation energy source and an irrigation pump with multiple pump heads that can operate independently of each other. An integrated irrigation tubing set is included to extend between the fluid source and the catheter, with each pump head being able to act on a different tubing that delivers fluid to a different electrode or set of electrodes. | 01-31-2013 |
20130030427 | Radiofrequency Catheter - An integrated catheter shaft with a guidewire and a radio frequency wire is used in a catheter to deliver radio frequency energy to a treatment site. The small entry wound and the long integrated catheter shaft allows a user to thread the shaft along a tortuous route along a spinal canal to reach a treatment site while causing a minimal amount of trauma to the patient. | 01-31-2013 |
20130030428 | SURGICAL INSTRUMENT WITH MULTI-PHASE TRIGGER BIAS - An apparatus comprises an end effector, an elongate shaft, and a handle assembly. The end effector is operable to grasp tissue. The elongate shaft extends between the end effector and the handle assembly. The handle assembly comprises a body portion, a trigger, and a trigger return lever. The trigger is movable relative to the body portion from a home position to an actuated position, and is thereby operable to control the end effector to selectively grasp tissue. The trigger includes a cam feature. The trigger return lever is positioned to engage the cam feature of the trigger. The trigger return lever is configured to bias the trigger toward the home position during at least part of a range of motion of the trigger from the home position to the actuated position. | 01-31-2013 |
20130035679 | Electrosurgical Apparatus with Real-Time RF Tissue Energy Control - A radio-frequency (RF) amplifier having a direct response to an arbitrary signal source to output one or more electrosurgical waveforms within an energy activation request, is disclosed. The RF amplifier includes a phase compensator coupled to an RF arbitrary source, the phase compensator configured to generate a reference signal as a function of an arbitrary RF signal from the RF arbitrary source and a phase control signal; at least one error correction amplifier coupled to the phase compensator, the at least one error correction amplifier configured to output a control signal at least as a function of the reference signal; and at least one power component coupled to the at least one error correction amplifier and to a high voltage power source configured to supply high voltage direct current thereto, the at least one power component configured to operate in response to the control signal to generate at least one component of the at least one electrosurgical waveform. | 02-07-2013 |
20130035680 | Applicator and Tissue Interface Module for Dermatological Device - An tissue interface module has an applicator chamber on a proximal side of the tissue interface module and a tissue acquisition chamber on a distal side of the tissue interface module. The applicator chamber may include: an opening adapted to receive the applicator; an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator; a sealing member positioned at a proximal side of the applicator chamber; and a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator. The invention also includes corresponding methods. | 02-07-2013 |
20130035681 | NOVEL CATHETER FOR CONTIGUOUS RF ABLATION - A tissue ablation device comprising an elongate member having a proximal end, a distal end and a side wall defining a lumen, and an elongate ablation member having an ablation element proximate a distal end thereof, the elongate ablation member rotatable about an longitudinal axis of the elongate member, and wherein one of the elongate ablation member and the elongate member is at least partially contained within the other and methods of use therefor. | 02-07-2013 |
20130035682 | Noninvasive Nerve Ablation - The present invention relates to the field of medical imaging and therapy of nerve lesions that are detrimental to the body. The method incorporates both identifying imaging for localization and treatment with a radiation source. Clear images of individual nerve structures are fused to conventional images for accurate treatment planning with noninvasive ablating beams. This results in increased radiation dose in the lesion. Furthermore, neither endovascular intervention nor additional internally introduced reference points are needed. More specifically this invention relates to a method for optimizing delivery of ablating beams to a lesion compared to the surrounding normal tissues without invasive techniques. | 02-07-2013 |
20130041361 | Microwave Sensing for Tissue Sealing - A system for monitoring the target tissue during a tissue sealing procedure is disclosed. The system includes a forceps having opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp the tissue therebetween. Each of the jaw members to includes a sealing member. The system also includes a generator coupled to the sealing members so that therapeutic energy is delivered to the target tissue. The generator includes an output stage configured to generate therapeutic energy and a microwave detector configured to measure reflected and/or absorbed microwave signals. The monitored microwave signals may be either the therapeutic energy signal or a separate non-therapeutic microwave monitoring signal. The generator also includes a controller operatively coupled to the microwave detector. The controller is configured to determine the state of the tissue based on the reflected and/or absorbed microwave signals and to control the delivery of therapeutic energy from the generator to tissue based on the microwave measurements. | 02-14-2013 |
20130041362 | Microwave Antenna Having a Coaxial Cable with an Adjustable Outer Conductor Configuration - A microwave ablation system is provided. The microwave ablation system includes a power source. A microwave antenna is adapted to connect to the power source via a coaxial cable that includes inner and outer conductors having a compressible dielectric operably disposed therebetween. The inner conductor in operative communication with a radiating section associated with the microwave antenna. The outer conductor includes a distal end transitionable with respect to each of the inner conductor, compressible dielectric and radiating section from an initial condition wherein the distal end has a first diameter to a subsequent condition wherein the distal end has second diameter. Transition of the distal end from the initial condition to the subsequent condition enhances the delivery of microwave energy from the power source to the inner conductor and radiating section such that a desired effect to tissue is achieved. | 02-14-2013 |
20130041363 | Dual-Mode Electrosurgical Devices And Electrosurgical Methods Using Same - Herein disclosed are dual-mode electrosurgical devices designed to function in a first mode in which high-density RF energy is used to cut or vaporize tissue, and then a second mode in which lower-density RF energy desiccates tissue to produce hemostasis, as well as methods of performing electrosurgery using same. Devices formed in accordance with the principles of this invention may be used for any surgical procedure in which highly vascular tissue is cut electrosurgically in a dry or semi-dry field, examples of which include tonsillectomy, liver resection, and cosmetic procedures such as breast augmentation, breast reduction, breast mastopexy, and abdominoplasty. | 02-14-2013 |
20130041364 | Electrosurgical Apparatus With Predictive RF Source Control - An electrosurgical generator is disclosed, which includes a closed loop control system having a sensor system configured to sense tissue and/or energy properties at a tissue site and to generate a sensor signal representative of the tissue and/or energy properties. The control system includes a controller configured to select an electrosurgical operational mode from a plurality of electrosurgical operational modes in response to the sensor signal. A radio frequency arbitrary source is also included which generates a radio frequency input signal corresponding to the selected electrosurgical operational mode and a radio frequency output stage configured to generate a treatment signal corresponding to the electrosurgical operational mode. The system includes a predictive signal processor configured to adjust the radio frequency output stage in response to the radio frequency input signal, such that the radio frequency output stage alters the treatment signal in real time based on the selected electrosurgical operational mode. | 02-14-2013 |
20130041365 | DYNAMICALLY MATCHED MICROWAVE ANTENNA FOR TISSUE ABLATION - A microwave ablation probe for providing microwave energy to tissue is disclosed. The probe includes a feedline having an inner conductor, a secondary inner conductor, an insulating spacer, and an outer conductor. The inner conductor is slidably disposed within the secondary inner conductor. The feedline also includes a radiating portion having an extruded portion of the inner conductor centrally disposed therein, wherein longitudinal movement of the inner conductor relative to the feedline tunes the radiating portion. | 02-14-2013 |
20130041366 | Vacuum Device for Sealing an Anatomical Opening - A device for accessing a hollow organ comprises an elongated body sized for insertion into an entrance passage to the hollow organ, the elongated body including an outer sealing surface engaging an inner surface of the entrance passage and a working channel extending therethrough from a proximal port which, when the elongated body is in the operative position is proximal to a proximal opening of the entrance passage, to a distal port which, when the elongated body is in the operative position, extends distally past a distal opening of the entrance passage into the hollow organ and a plurality of suction holes formed through an outer wall of the elongated body, disposed around a circumference of a portion of the elongated body which, when the elongated body is in the operative position, is located within the entrance passage in combination with a vacuum channel formed in the elongated body for transferring a negative pressure to the suction holes to increase a sealing force applied by tissue of the entrance passage to the outer surface of the elongated body. | 02-14-2013 |
20130041367 | VESSEL SEALING SYSTEM - An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. | 02-14-2013 |
20130046294 | INTRODUCER FOR RADIOFREQUENCY NEEDLE - An introducer for a radiofrequency needle includes a hollow tube. An introducer for a radiofrequency needle may also include a radiofrequency needle that extends through the hollow tube. The hollow tube includes a first portion that includes a longitudinal axis and a second portion that includes a longitudinal axis, that extends at an angle relative to the longitudinal axis of the first portion and has a distal tissue piercing tip segment and a bevel. The bevel has a heel segment in which the inner edge is rounded. The inner edge is rounded substantially continuously along the heel segment in an amount sufficient to prevent snagging of a radiofrequency needle on the inner edge as the radiofrequency needle is moved during placement. | 02-21-2013 |
20130053840 | System and Method for DC Tissue Impedance Sensing - A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminals which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion such that the electrical field along the cable is mitigated along the length thereof. | 02-28-2013 |
20130066311 | Surgical Generator And Related Method For Mitigating Overcurrent Conditions - A surgical generator and related method for mitigating overcurrent conditions are provided. The surgical generator includes a power supply, a radio frequency output stage, an overcurrent detection circuit in operative communication with an interrupt circuit, and a processor. The power supply generates a power signal and supplies the power signal to the radio frequency output stage. The radio frequency output stage generates a radio frequency signal from the power signal. The overcurrent detection circuit detects an overcurrent of the power signal and/or an overcurrent of the radio frequency signal. The interrupt circuit provides an interrupt signal in response to a detected overcurrent. The processor receives the interrupt signal and supplies a pulse-width modulation signal to the power supply and incrementally decreases the duty cycle of the pulse-width modulation signal in response to the interrupt signal. The radio frequency output stage may be disabled in response to the detected overcurrent. | 03-14-2013 |
20130066312 | ABLATION DEVICE WITH MULTIPLE ABLATION MODES - Devices, systems, and methods for performing ablation therapy on body tissue are disclosed. An example ablation device for treating body tissue includes an ionically conductive balloon and a radio-frequency electrode that delivers RF energy into a distal section of the balloon. The balloon is configured to transmit the RF energy in a direction distally towards a leading end of the ablation device. Multiple ablation electrodes on the device can be used for providing lesions of different size or shape. | 03-14-2013 |
20130066313 | Catheter With Remotely Extendible Instruments - A method for performing a surgical procedure within lungs of a patient. The method comprising the steps of providing a plurality of surgical instruments and providing a housing. Attaching a flexible, elongated shaft with distal and proximal ends to the housing. Engaging at least one working end to the distal end of the housing, the working end including a plurality of tubes disposed therein that define a corresponding plurality of working channels for housing a corresponding plurality of surgical instruments. Controlling an actuator to engage at least one of the corresponding plurality of surgical instruments, wherein rotation of the working end with respect to a longitudinal axis of the elongated shaft engages at least one of the plurality of surgical instrument with the actuator to deploy the at least one surgical instrument to the lung as needed during a surgical procedure. | 03-14-2013 |
20130066314 | Catheter With Remotely Extendible Instruments - A method for performing a surgical procedure within lungs of a patient. The method comprising the steps of providing a plurality of surgical instruments and providing a housing. Attaching a flexible, elongated shaft with distal and proximal ends to the housing. Engaging at least one working end to the distal end of the housing, the working end including a plurality of tubes disposed therein that define a corresponding plurality of working channels for housing a corresponding plurality of surgical instruments. Controlling an actuator to engage at least one of the corresponding plurality of surgical instruments, wherein rotation of the working end with respect to a longitudinal axis of the elongated shaft engages at least one of the plurality of surgical instrument with the actuator to deploy the at least one surgical instrument to the lung as needed during a surgical procedure. | 03-14-2013 |
20130072919 | Seal Plate With Insulation Displacement Connection - An end effector assembly having first and second jaw members is provided where one or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes an inwardly-facing surface having a slot defined therein and a wire having an insulative coating. A seal plate has at least one protrusion that is configured to be disposed in the slot. The at least one protrusion of the seal plate is configured to displace the insulative coating from the wire thereby forming an electrical connection therewith when the at least one protrusion is disposed in the slot. | 03-21-2013 |
20130072920 | Handheld Medical Devices Including Microwave Amplifier Unit At Device Handle - A medical device includes a handle assembly including a distal end, a probe extending distally from the distal end of the handle assembly, and a microwave amplifier unit disposed within the handle assembly. The microwave amplifier unit is adapted to amplify a high-frequency input signal to generate a high-frequency output signal to be transmitted to the probe. | 03-21-2013 |
20130072921 | Handheld Medical Devices Including Microwave Amplifier Unit At Device Handle - A medical device includes a handle assembly and a probe-and-amplifier assembly. The handle assembly includes a handle body defining a chamber therein. The probe-and-amplifier assembly includes a probe and a microwave amplifier unit. The probe extends distally from the distal end of the handle assembly. The microwave amplifier unit is disposed within the chamber. The microwave amplifier unit and the probe are mechanically coupled to one another to form a unitary body. The probe-and-amplifier assembly is selectively removable from the handle assembly. | 03-21-2013 |
20130072922 | Handheld Medical Devices Including Microwave Amplifier Unit At Device Handle - A system includes a microwave signal generator and a medical device. The medical device includes a handle assembly, a microwave-signal-amplifying module, and a probe. The microwave-signal-amplifying module includes a microwave amplifier unit. The microwave amplifier unit is adapted to amplify a high-frequency input signal to generate a high-frequency output signal. The microwave amplifier unit is disposed within the handle assembly. The probe extends distally from the distal end of the handle assembly and is operably coupled to an output of the microwave-signal-amplifying module. | 03-21-2013 |
20130072923 | Handheld Medical Devices Including Microwave Amplifier Unit At Device Handle - A method of directing energy to tissue includes the steps of providing a handheld device including an energy applicator and a handle assembly configured to support the energy applicator at a distal end thereof, and transmitting energy from an output of a microwave amplifier unit disposed within the handle assembly through the energy applicator to tissue. | 03-21-2013 |
20130072924 | ABLATION ANTENNA - A radio frequency ablation antenna is disclosed. The micro-strip ablation antenna has a dielectric member having a substantially tubular shape. A first conductor is disposed within the dielectric member, and a second conductor is disposed on an outer surface of the dielectric member. The first conductor is configured to be electrically connected to a radio frequency source or ground, and the second conductor is configured to be electrically connected to the other of the radio frequency source or the ground. | 03-21-2013 |
20130072925 | Applicator and Tissue Interface Module for Dermatological Device - An tissue interface module has an applicator chamber on a proximal side of the tissue interface module and a tissue acquisition chamber on a distal side of the tissue interface module. The applicator chamber may include: an opening adapted to receive the applicator; an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator; a sealing member positioned at a proximal side of the applicator chamber; and a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator. The invention also includes corresponding methods. | 03-21-2013 |
20130079763 | Logarithmic Amplifier, Electrosurgical Generator Including Same, and Method of Controlling Electrosurgical Generator Using Same - An electrosurgical generator includes an RF output stage, a current sensor, a voltage sensor, first and second log amplifiers, and a controller. The RF output stage is configured to supply electrosurgical energy to tissue. The current sensor is configured to sense a current of the electrosurgical energy and generate a current signal corresponding to the current of the electrosurgical energy. The first log amplifier is configured to amplify and compress the current signal. The voltage sensor is configured to sense a voltage of the electrosurgical energy and generate a voltage signal in response thereto. The second log amplifier is configured to amplify and compress the voltage signal. The controller is configured to receive the amplified voltage signal and the amplified current signal and operatively control the generation of the electrosurgical energy as a function of the amplified voltage signal and the amplified current signal. | 03-28-2013 |
20130079764 | ELECTROSURGICAL FORCEPS - Electrosurgical forceps for efficiently severing of hollow organs, in particular vessels. The electrosurgical forceps have a first branch and a second branch for gripping the hollow organ. The forceps have at least one neutral electrode on the second branch, at least one first coagulation electrode and a second coagulation electrode that is disposed on the first branch for applying a first HF current by means of the coagulation electrode, and at least one cutting device, which is arranged between the coagulation electrodes in order to sever the hollow organ in a cutting region. The cutting device has a cutting electrode for applying a second HF current between the cutting and neutral electrodes. The coagulation electrodes are arranged spaced apart from one another in such a way that the first HF current does not flow through or only a minor amount of the same flows through the cutting region. | 03-28-2013 |
20130079765 | System and Method for Performing an Electrosurgical Procedure Using an Ablation Device with an Integrated Imaging Device - An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue. The radiating portion has an outer conductor and an inner conductor. The inner conductor is disposed within the outer conductor. The device also includes an imaging device operably coupled to the radiating portion. The imaging device is configured to generate imaging data corresponding to tissue proximate the radiating portion of the antenna assembly. | 03-28-2013 |
20130079766 | METHOD AND APPARATUS FOR FRACTIONAL SKIN TREATMENT - An apparatus for cosmetic RF skin treatment where the RF energy supply is isolated from the patient treated, such that in course of treatment no undesired current flows through the subject body. | 03-28-2013 |
20130079767 | EMBOLIZATION - A particle includes a ferromagnetic material, a radiopaque material, and/or an MRI-visible material. | 03-28-2013 |
20130079768 | CATHETER WITH REVERSIBLE ADHESIVENESS, FOR STABILIZATION DURING TRANSCATHETER ABLATION BY MEANS OF RADIO FREQUENCY - A catheter that combines the delivery of radiofrequency, normally used in transcatheter ablation of cardiac arrhythmias, with a system providing temporary and reversible adhesion to heart tissue, so as to allow the stabilization of the catheter during breathing and pulsations of the heart, leading to more effective and more easily standardized radiofrequency lesions. | 03-28-2013 |
20130085487 | Electrosurgical Device with Offset Conductive Element - A device for forming a lesion includes a hub defining a passageway and a shaft attached to the hub and defining a lumen. The shaft has a proximal end and a distal end extending away from the hub. The shaft includes an electrically conductive material on at least a portion of an inner surface and on at least a portion on an outer surface. A conductive member has a longitudinal axis and is attached to a mounting structure mateable with mounting structure of the hub so that the conductive member extends through the passageway into the lumen so that at least near the hub the conductive member longitudinal axis is spaced from the lumen longitudinal axis to create electrical contact between the conductive member outer surface and the shaft inner surface. | 04-04-2013 |
20130085488 | NARROW GAUGE HIGH STRENGTH CHOKED WET TIP MICROWAVE ABLATION ANTENNA - An electromagnetic surgical ablation probe having a coaxial feedline and cooling chamber is disclosed. The disclosed probe includes a dipole antenna arrangement having a radiating section, a distal tip coupled to a distal end of the radiating section, and a ring-like balun short, or choke, which may control a radiation pattern of the probe. A conductive tube disposed coaxially around the balun short includes at least one fluid conduit which provides coolant, such as dionized water, to a cooling chamber defined within the probe. A radiofrequency transparent catheter forms an outer surface of the probe and may include a lubricious coating. | 04-04-2013 |
20130090641 | INTERFACE MODULE ALLOWING DELIVERY OF TISSUE STIMULATION AND ELECTROSURGERY THROUGH A COMMON SURGICAL INSTRUMENT - Concepts presented herein relate to an interface module that can be electrically coupled to an electrical stimulation generator, a radio frequency generator and an instrument. A selection module is coupled to the interface module and operates in a first mode to deliver electrical stimulation signals from the electrical stimulation generator to the instrument and in a second mode to deliver radio frequency signals from the radio frequency generator to the instrument. | 04-11-2013 |
20130090642 | LAPARSCOPIC TISSUE MORCELLATOR SYSTEMS AND METHODS - A surgical tissue cutting and extraction device includes a sleeve having a tissue extraction lumen. One or more jaw members are coupled to the sleeve and configured to pivot or flex relative to the sleeve to capture tissue. The captured tissue may then be resected using radio frequency or other cutting tools on the sleeve. | 04-11-2013 |
20130096548 | METHOD FOR DERMATOLOGICAL TREATMENT USING CHROMOPHORES - The present invention encompasses methods that use heat and/or electromagnetic radiation for dermatological treatment and more particularly to a method that uses heat and/or electromagnetic radiation in combination with chromophores for fractional wounding and, in particular, discontinuous fractional damage of skin tissue. | 04-18-2013 |
20130096549 | METHOD AND APPARATUS FOR PRECISELY CONTROLLING THE SIZE AND SHAPE OF RADIOFREQUENCY ABLATIONS - Various embodiments of multielectrode radiofrequency (RF) ablation probes are described herein that disclose methods and apparatus for improved control and predictability of the size and shape of RF thermal electrocoagulations. The features of the invention include the ability to make irregularly shaped ablations in order to conform to irregularly shaped target tissue volumes, and to make very large ablations without the requirement for electrode cooling. | 04-18-2013 |
20130096550 | ABLATIVE CATHETER WITH ELECTRODE COOLING AND RELATED METHODS OF USE - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include an ablative catheter system including an elongate member having a proximal end, a distal end, and a lumen extending there between. An end-effector may be disposed at the distal end of the elongate member. The end-effector may include an expandable frame. A membrane may be supported on the frame. The membrane may be configured to partially occlude fluid flow upon frame expansion. One or more electrodes may be placed on the end-effector. The system may also include a control member that is configured to shift the end-effector between a collapsed state and the frame expansion state. | 04-18-2013 |
20130096551 | CATHETER WITH PRESSURE SENSING - A medical probe includes a flexible insertion tube, having a distal end for insertion into a body cavity of a patient, and a distal tip, which is disposed at the distal end of the insertion tube and is configured to be brought into contact with tissue in the body cavity. A resilient member couples the distal tip to the distal end of the insertion tube and is configured to deform in response to pressure exerted on the distal tip when the distal tip engages the tissue. A position sensor within the probe senses a position of the distal tip relative to the distal end of the insertion tube, which changes in response to deformation of the resilient member. | 04-18-2013 |
20130103021 | TISSUE EXTRACTION DEVICES AND METHODS - A tissue cutting device has an outer sleeve with a distal window and an inner cutting sleeve which moves past the window to cut tissue. The inner cutting sleeve has a lumen which may have a larger proximal diameter than distal diameter. A perimeter of the window may comprise a dielectric material. A distal edge of the inner sleeve may be displaced inwardly. | 04-25-2013 |
20130103022 | THERMAL DENERVATION DEVICES AND METHODS - A method and apparatus for treating an intraosseous nerve. The method includes positioning a hollow shaft through the cortical shell of a vertebral body and into a cancellous bone region of the vertebral body. The hollow shaft includes an annular wall having a longitudinal bore therein, a proximal portion and a distal portion, and a first window extending transversely through the annular wall. An electrosurgical probe is advanced within the longitudinal bore from the proximal portion toward the distal portion. The electrosurgical probe includes a first treatment element at a distal end of the probe, wherein the first treatment element being in electrical connection with a power supply. The first treatment element is slidably disposed within the longitudinal bore so that the first treatment element is advanced radially outward from the window and shaft to affect treatment of the intraosseous nerve within the cancellous bone region. | 04-25-2013 |
20130103023 | LITZ WIRE BATTERY POWERED DEVICE - A medical instrument is disclosed. The medical instrument includes a housing and a handle for gripping by a user, an end effector coupled to the handle and having at least one electrical contact, a battery, and a radio frequency (RF) generation circuit coupled to and operated by the battery. The RF generation circuit is operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact, wherein the RF generation circuit is supported by the housing. The RF generation circuit includes a resonant circuit that includes at least one inductive element constructed of litz wire. | 04-25-2013 |
20130103024 | USER INTERFACE IN A BATTERY POWERED DEVICE - A medical instrument is disclosed. The medical instrument includes a housing, at least one electrical contact, a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact, and a user interface supported by the housing. The user interface includes visual and audible feedback elements, wherein the state of the instrument can be determined by the state of the visual and audible feedback elements. | 04-25-2013 |
20130103025 | DIRECTIVE WINDOW ABLATION ANTENNA WITH DIELECTRIC LOADING - An electrosurgical device for directing energy to a target volume of tissue includes a coaxial feedline having an inner conductor, an outer conductor coaxially disposed around the inner conductor, and a dielectric material disposed therebetween. An elongated electrically-conductive member is longitudinally disposed at a distal end of the inner conductor. A balun structure is disposed on the outer conductor. The device also includes an electrically-conductive cylinder coaxially disposed around a distal portion of the balun structure, and a dielectric structure disposed substantially adjacent to a distal end of the electrically-conductive cylinder, wherein the dielectric structure longitudinally extends from the distal end of the electrically-conductive cylinder to a distal end of the electrically-conductive member. | 04-25-2013 |
20130110101 | METHODS FOR TREATING EYE CONDITIONS | 05-02-2013 |
20130110102 | Targeted Cooling of Deployable Microwave Antenna | 05-02-2013 |
20130116678 | IMPEDANCE MEDIATED CONTROL OF POWER DELIVERY FOR ELECTROSURGERY - A method of controlling electrosurgical power delivery is based on a comparison of sensed tissue impedance to various impedance threshold values. Energy is delivered to tissue in a sealing cycle as a series of pulses. A pulse has a profile with a preset energy starting value that increases at a ramping rate to a preset end value. Sensed impedance data are monitored throughout each pulse and compared to each of an impedance threshold value for RF setpoint, an impedance threshold value for cumulative time, and an impedance threshold value for energy cutback. Based on sensed impedance during a pulse, the profile of a subsequent pulse can be modified. In the event of a high impedance event that reflects low tissue presence, energy may be cutback. A sealing cycle is stopped when a cumulative amount of time with an impedance value over the impedance cumulative time threshold value reaches a limit. | 05-09-2013 |
20130116679 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for delivering energy to difficult to access tissue regions (e.g. peripheral lung tissues), and/or reducing the amount of undesired heat given off during energy delivery. | 05-09-2013 |
20130116680 | ELECTROSURGERY IRRIGATION PRIMER SYSTEMS AND METHODS - Systems and methods are provided for priming or purging an electrosurgical fluid irrigation system. The electrosurgical system can include a high frequency power supply, a fluid delivery system, a handheld device having one or more electrodes, and one or more connectors for connecting the handheld device to the fluid delivery system and the RF generator. The electrosurgical system may be configured to deliver RF current and irrigation fluid until a threshold current level is detected, which is indicative of a continuous flow of fluid at the electrode and purging completion. The systems and methods of purging an electrosurgical system may further include dynamically controlling an RF output and fluid delivery system in accordance with varied parameters of detected threshold current levels. | 05-09-2013 |
20130123771 | DISSECTION HANDPIECE AND METHOD FOR REDUCING THE APPEARANCE OF CELLULITE - A dermatological skin treatment device is provided. The device comprises a handpiece and a cutting tool, wherein the tool is inserted through the conduit and percutaneously inserted into a tissue disposed within a recessed area of the handpiece. The device and method cut the fibrous structures under the skin that cause cellulite at an angle substantially parallel to the surface of the skin and replace these structures with a non-cellulite forming structure by deploying a highly fibrous mesh through a single needle hole to create a highly fibrous layer directly or through wound healing processes. | 05-16-2013 |
20130123772 | Perfused Core Dielectrically Loaded Dipole Microwave Antenna Probe - A microwave surgical ablation probe having an arrangement of coolant channels in fluid communication with a cooling chamber disposed within the distal end of the probe is disclosed. A hypotube having one or more longitudinal ribs extending radially inward from an inner surface thereof is coaxially disposed around a coaxial feedline. The longitudinal ribs of the hypotube engage an outer sheath of the feedline to define a fluid inflow channel to deliver coolant to the cooling chamber, and a fluid outflow channel to receive fluid from the cooling chamber. The cooling chamber may be formed from porous ceramic or porous metallic material that provides structural support to the probe while permitting coolant to circulate therethrough. The probe includes dielectric and choke members that are adapted to control the microwave radiation pattern (e.g., ablation shape), and which may provide improved coupling of the probe to tissue. | 05-16-2013 |
20130131660 | BATTERY INITIALIZATION CLIP - A medical instrument is disclosed. The medical instrument includes a housing, a control lever rotatably coupled to the housing, at least one electrical contact, a radio frequency (RF) generation circuit coupled to and operated by the battery and operable to generate an RF drive signal and to provide the RF drive signal to the at least one electrical contact and an initialization clip coupled to housing and the control lever to prevent operation of the RF generation circuit and movement of the control lever. | 05-23-2013 |
20130131661 | METHODS AND SYSTEMS FOR DETERMINING PHYSIOLOGIC CHARACTERISTICS FOR TREATMENT OF THE ESOPHAGUS - A method and apparatus for treating abnormal mucosa in the esophagus is disclosed, such that the depth of the treated tissue is controlled. The depth of ablation is controlled by monitoring the tissue impedance and/or the tissue temperature. A desired ablation depth is also achieved by controlling the energy density or power density, and the amount of time required for energy delivery. A method and apparatus is disclosed for measuring an inner diameter of a body lumen, where a balloon is inflated inside the body lumen at a fixed pressure. | 05-23-2013 |
20130138095 | METHODS AND DEVICES TO MODULATE THE AUTONOMIC NERVOUS SYSTEM VIA THE CAROTID BODY OR CAROTID SINUS - In some embodiments, sympathetic nerves surrounding arteries or leading to organs are targeted with energy sources to correct or modulate physiologic processes. In some embodiments, different types of energy sources are utilized singly or combined with one another. In some embodiments, bioactive agents or devices activated by the energy sources are delivered to the region of interest and the energy is enhanced by such agents. | 05-30-2013 |
20130138096 | SURGICAL INSTRUMENT AND SYSTEM - A surgical instrument comprises a housing, an end effector carried by the housing, and one or more connections adapted to connect the surgical instrument to a controller such as an electrosurgical generator. The housing includes a plurality of handswitches located at different rotational positions around the housing. The handswitches comprise two handswitch sets the handswitches of each set being connected in to common so as to send the same signal to the controller whichever one of the handswitches is activated. In this way a user of the surgical instrument can send signals to the controller using any of the handswitches within a particular set, depending on the orientation of the surgical instrument. | 05-30-2013 |
20130138097 | SYSTEM AND METHOD TO DETECT PATIENT RETURN ELECTRODE CONNECTION IN AN RF ABLATION SYSTEM - A medical device is provided, including an ablation system with a generator, at least one ablation element, a patient return electrode, and a feedback system to verify and monitor the electrical connection between the generator and the patient return electrode, as well as contact of the patient return electrode with the patient. The medical system sends a test signal to the patient return electrode prior to the delivery of ablation energy. If the response to the test signal indicates that the connection of the patient return electrode is absent, intermittent, or of low quality, the medical device may also provide notice, a warning or alarm. | 05-30-2013 |
20130144284 | Vessel Sealing Using Microwave Energy - The present disclosure provides for an end effector assembly for microwave forceps. The end effector assembly includes a pair of opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a microwave antenna assembly and a shielding member including a metallic plate coupled to ground and a dielectric material. The end effector assembly also includes a splitter configured to receive an active signal from a source of microwave energy and split the active signal into a first signal transmitted to the microwave antenna assembly in one of the jaw members and a second signal transmitted in the microwave antenna assembly in the other jaw member. | 06-06-2013 |
20130144285 | Portable Surgical Instruments - A portable surgical instrument (PSI) includes a shaft extending therefrom. An end effector operably supported at the distal end of the shaft includes a pair of jaw members. One or both of the jaw members is activatable to treat tissue. A selectively removable generator pivotally couples to the housing to energize the activatable jaw member. The generator defining one or more apertures at a distal end thereof and a pivot member disposed at a proximal end thereof. A locking mechanism configured to operably couple to the elongated shaft of the housing includes one or more locking fingers configured to releasably couple to the one or more apertures disposed at the distal end of the generator such that generator is selectively and removably engageable with the housing of the portable surgical instrument. | 06-06-2013 |
20130144286 | MICROWAVE SURGICAL DEVICE - A microwave surgical device with high energy efficiency produces, at an antenna, an asymmetric heating pattern directed towards the side and it comprises: a plain curved portion extending from the distal end of said external conductor; and an inflection point at said distal end of the external conductor, so that said curved portion has a single cavity directed towards the axis of the coaxial end part. | 06-06-2013 |
20130150844 | Systems and Methods for Creating an Effect Using Microwave Energy to Specified Tissue - Systems, methods and devices for creating an effect using microwave energy to specified tissue are disclosed. A system for the application of microwave energy to a tissue includes a signal generator adapted to generate a microwave signal having predetermined characteristics, an applicator connected to the generator and adapted to apply microwave energy to tissue. The applicator includes one or more microwave antennas and a tissue interface, a vacuum source connected to the tissue interface, a cooling source connected to the tissue interface, and a controller adapted to control the signal generator, the vacuum source, and the coolant source. The tissue includes a first layer and a second layer, the second layer below the first layer. The controller is configured so that the system delivers energy such that a peak power loss density profile is created in the second layer. | 06-13-2013 |
20130150845 | System and Method for Monitoring Ablation Size - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with a memory associated with the power source. The memory includes one or more data look-up tables including data pertaining to a control curve varying over time and being representative of one or more electrical parameters associated with the microwave antenna. Points along the control curve correspond to a value of the electrical parameters and the ablation zone control module triggers a signal when a predetermined threshold value of the electrical parameter(s) is measured corresponding to the radius of the ablation zone. | 06-13-2013 |
20130158536 | Electrosurgical Devices - An electrosurgical device includes a tubular shaft defining a shaft lumen, and a tubular electrode defining an electrode lumen, the electrode being coupled to the shaft. In a straight configuration, the electrode is configured to retain fluid within the electrode lumen, and, in a bent configuration, the electrode is configured to release fluid from within the electrode lumen to an exterior of the electrode. | 06-20-2013 |
20130158537 | ENERGY APPLICATION APPARATUS FOR APPLYING ENERGY TO AN OBJECT - The invention relates to an energy application apparatus for applying energy to an object. A plurality of energy application elements ( | 06-20-2013 |
20130158538 | PRE-FORMED CURVED ABLATION CATHETER - A medical device includes an insertion tube, having a longitudinal axis and having a distal end adapted for insertion through a body passage into a cavity within a body of a patient. An electrode is located on the distal end of the insertion tube and is configured to contact tissue in the cavity. A resilient member is contained within the distal end of the insertion tube and is configured, when unconstrained, to cause the distal end to bend away from the longitudinal axis in a curved shape and to straighten toward the longitudinal axis when subjected to a force. | 06-20-2013 |
20130158539 | PRE-FORMED CURVED ABLATION CATHETER - A medical device includes an insertion tube, having a longitudinal axis and having a distal end adapted for insertion through a body passage into a cavity within a body of a patient. An electrode is located on the distal end of the insertion tube and is configured to contact tissue in the cavity. A resilient member is contained within the distal end of the insertion tube and is configured, when unconstrained, to cause the distal end to bend away from the longitudinal axis in a curved shape and to straighten toward the longitudinal axis when subjected to a force. | 06-20-2013 |
20130158540 | METHOD OF TREATING TISSUE WITH RADIO FREQUENCY VASCULAR ELECTRODE ARRAY - A method of treating a patient is provided. The method comprises delivering an electrically conductive material within a vascular network, wherein the electrically conductive material embolizes in a region of the vascular network to form a vascular electrode array that assumes a geometry of the embolized region of the vascular network. The method may optionally comprise delivering a containment agent within the vascular network proximal to the delivered electrically conductive material to stabilize the vascular electrode array. The method further comprises applying electrical energy (e.g., radio frequency (RF) energy) to the vascular electrode array to therapeutically conduct electrical energy into a region of the targeted tissue adjacent the embolized region of the vascular network. | 06-20-2013 |
20130165913 | MOISTURE TRANSPORT SYSTEM FOR CONTACT ELECTROCOAGULATION - An apparatus and method for use in performing ablation or coagulation of organs and other tissue includes a metallized fabric electrode array which is substantially absorbent and/or permeable to moisture and gases such as steam and conformable to the body cavity. The array includes conductive regions separated by insulated regions arranged to produce ablation to a predetermined depth. Following placement of the ablation device into contact with the tissue to be ablated, an RF generator is used to deliver RF energy to the conductive regions and to thereby induce current flow from the electrodes to tissue to be ablated. As the current heats the tissue, moisture (such as steam or liquid) leaves the tissue causing the tissue to dehydrate. Suction may be applied to facilitate moisture removal. The moisture permeability and/or absorbency of the electrode carrying member allows the moisture to leave the ablation site so as to prevent the moisture from providing a path of conductivity for the current. | 06-27-2013 |
20130165914 | BALLOON CATHETER - Thermal conduction to a non-target tissue is unfailingly blocked off to select and effectively ablate only a target tissue. A catheter shaft | 06-27-2013 |
20130165915 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. | 06-27-2013 |
20130165916 | METHODS AND APPARATUSES FOR REMODELING TISSUE OF OR ADJACENT TO A BODY PASSAGE - Medical devices and methods for making and using the same are disclosed. An example method may include a method for treating tissue near a body passageway using an apparatus including a catheter having a plurality of electrodes, a radio-frequency energy generator, and a controller coupling the energy generator to the plurality of electrodes and configured to selectively energize the electrodes. The method may include using the apparatus to subject the tissue near the body passageway to a plurality of energy treatment cycles. The treatment cycle may include determining desired voltages for at least a subset of the electrodes for maintaining a predetermined target temperature profile proximate the subset of electrodes, setting an output voltage of the energy generator to correspond to the desired voltage determined for one of the electrodes, and energizing at least some of the electrodes at the output voltage to deliver energy to the body passageway. | 06-27-2013 |
20130165917 | METHODS AND APPARATUSES FOR REMODELING TISSUE OF OR ADJACENT TO A BODY PASSAGE - Medical devices and methods for making and using the same are disclosed. An example method may include renal-denervation treatment method. The method may include delivering an RF energy treatment to a tissue proximate a renal artery using a catheter assembly of a renal denervation catheter system. The denervation system may include an RF energy generator coupled with the catheter assembly by a controller. The method may also include applying neural activity stimulation to the tissue proximate the renal artery using the catheter assembly, assessing stimulated neural activity response of the tissue using the catheter assembly, and determining a parameter of the RF energy treatment based on the assessed neural activity. | 06-27-2013 |
20130172868 | Systems and methods using sensors that resonate at a frequency equal to a resonance frequency of an ablated tissue - A method is provided of tissue ablation during a tissue ablation procedure. Ablation energy is applied by using a tissue ablation device to create an ablation at a tissue site. An ablation endpoint at the tissue site is detected by using an ablation endpoint device with one or more sensors that are positioned to monitor the ablation. The one or more sensors are selected from at least one of, a piezoelectric and a silicon MEMS sensor. Upon detecting the ablation endpoint, delivery of ablation energy to the tissue site ceases. | 07-04-2013 |
20130172869 | Systems and methods using sensors that resonate at a frequency equal to a resonance frequency of an ablated tissue - A method is provided of tissue ablation during a tissue ablation procedure. Ablation energy is applied by using a tissue ablation device to create an ablation at a tissue site. An ablation endpoint at the tissue site is detected by using an ablation endpoint device with one or more sensors that are positioned to monitor the ablation. The one or more sensors are selected from at least one of, a piezoelectric and a silicon MEMS sensor. Upon detecting the ablation endpoint, delivery of ablation energy to the tissue site ceases. | 07-04-2013 |
20130172870 | TISSUE CUTTING SYSTEMS AND METHODS - A probe for resecting and coagulating tissue comprises an outer sleeve having a tissue cutting window and an inner sleeve having a tissue cutting distal end. And RF cutting region is formed at the distal end of the inner member and an RF coagulation region is formed on an exterior surface of the inner member immediately proximal to the cutting surface. A single power supply providing a single RF energy mode can be connected to both RF applicator regions to simultaneously cut and coagulate tissue. | 07-04-2013 |
20130172871 | SKIN TREATMENT DEVICE - A device for treating skin includes two mechanical fingers for placement in contact with the skin. At least one of the fingers is moveable so as to change a separation distance between the fingers. The fingers are configured to concurrently conduct a generated radiofrequency electromagnetic signal to the skin so as to cause an electrical current to flow through the skin at a depth that corresponds to the separation distance. | 07-04-2013 |
20130172872 | DEVICE AND METHODS FOR NERVE MODULATION USING A NOVEL ABLATION CATHETER WITH POLYMERIC ABLATIVE ELEMENTS - The disclosure pertains to an intravascular catheter for nerve modulation, comprising an elongate member having a proximal end and a distal end, a balloon having a lumen and a balloon wall, the balloon wall comprising RF permeable sections and non-electrically conductive sections, an electrode disposed within the balloon and extending distally to the furthest distal RF permeable section. The RF permeable sections may comprise a plurality of RF permeable windows, each window having a greater circumferential dimension than an axial dimension. The intravascular system is suited for modulation of renal nerves. | 07-04-2013 |
20130178841 | Ablation Systems, Probes, and Methods for Reducing Radiation from an Ablation Probe into the Environment - The ablation systems, ablation probes, and corresponding methods according to the present disclosure reduce or eliminate energy radiating from an ablation probe into the environment. Some ablation probes include a retractable sheath that shields at least the radiating portion of the ablation probe. The retractable sheath and/or the ablation probe may include conduits through which a fluid may flow to shield the radiating portion and to drive the retractable sheath to an extended state. Other ablation probes include apertures defined in the probe walls through which the fluid can flow to expand a balloon surrounding the radiating portion. Yet other ablation probes include a thermal indicator to indicate the temperature of the ablation probe to a user. The ablation systems include fluid circuits and associated mechanical controls for varying the contents and/or flow rate of the fluid provided to the radiating portion of the ablation probe. | 07-11-2013 |
20130178842 | Ablation Systems, Probes, and Methods for Reducing Radiation from an Ablation Probe into the Environment - The ablation systems, ablation probes, and corresponding methods according to the present disclosure reduce or eliminate energy radiating from an ablation probe into the environment. Some ablation probes include a retractable sheath that shields at least the radiating portion of the ablation probe. The retractable sheath and/or the ablation probe may include conduits through which a fluid may flow to shield the radiating portion and to drive the retractable sheath to an extended state. Other ablation probes include apertures defined in the probe walls through which the fluid can flow to expand a balloon surrounding the radiating portion. Yet other ablation probes include a thermal indicator to indicate the temperature of the ablation probe to a user. The ablation systems include fluid circuits and associated mechanical controls for varying the contents and/or flow rate of the fluid provided to the radiating portion of the ablation probe. | 07-11-2013 |
20130178843 | System and Method For Treating Tissue Using An Expandable Antenna - A method of repairing an inner vessel wall includes the step of inserting at least a portion of a microwave ablation device into a vessel. The microwave ablation device includes an inner conductor disposed within an outer conductor and defines a longitudinal axis. The method also includes the steps of inserting a repairing sealant into the vessel such that the repairing sealant is disposed between an inner vessel wall and the outer conductor and expanding at least a portion of the outer conductor relative to the longitudinal axis to force at least a portion of the repairing sealant into the inner vessel wall. The method also includes the step of delivering energy to at least one of the inner conductor and the outer conductor to activate the repairing sealant to repair the inner vessel wall. | 07-11-2013 |
20130178844 | System and Method For Treating Tissue Using An Expandable Antenna - An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue of a patient. The radiating portion has an outer conductor and an inner conductor extending therethrough. The inner conductor is disposed within the outer conductor and defines a longitudinal axis. One of the inner conductor and the outer conductor is movable relative to the other to cause at least a portion of the outer conductor to expand radially relative to the longitudinal axis. | 07-11-2013 |
20130178845 | DEVICES AND METHODS FOR BIPOLAR AND MONOPOLAR PROCEDURES - An integrated catheter assembly comprises a bipolar electrode tool and a monopolar electrode tool. The catheter assembly enables an operator to perform both bipolar and monopolar procedures on tissue without having to withdraw the catheter assembly, without having to remove or replace any part of the catheter assembly, and/or without having to insert any additional tools or parts. The catheter assembly may comprise a switching mechanism such that when one of the bipolar electrode tool and monopolar electrode tool is electrically activated, the other of the bipolar electrode tool and monopolar electrode tool cannot be electrically activated. In one embodiment of a method, the operator uses a single catheter assembly for applying bipolar current for tissue electro-therapy and monopolar current for tissue cutting. | 07-11-2013 |
20130178846 | MICROWAVE ANTENNA HAVING A CURVED CONFIGURATION - A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue. | 07-11-2013 |
20130178847 | Target-Close Electromagnetic Energy Emitting Device - An apparatus having an excitation source that includes at least one laser diode and also having a handpiece with a disposable, bendable tip cannula is disclosed. | 07-11-2013 |
20130184697 | SYSTEM AND METHOD FOR NON-INVASIVE TREATMENT OF CARDIAC ARRHYTHMIAS - A method for non-invasive treatment of cardiac arrhythmias is provided. The method includes acquiring body surface electrical signals at locations on a body surface of a living being from electrodes placed on locations of the body surface, reconstructing three-dimensional heart and torso anatomical models of the living being from an imaging scan, and calculating an electrical activity a throughout three-dimensional volume of the heart by electrocardiogram inverse problem solving based at least in part on the acquired body surface electrical signals and the reconstructed three-dimensional heart and torso anatomical models. The method also includes identifying at least one location of at least one site of origin of a cardiac arrhythmia according to the calculated electrical activity within the heart, and delivering focused energy to the identified at least one location of the at least one site of origin of the cardiac arrhythmia. | 07-18-2013 |
20130184698 | CREST FACTOR ENHANCEMENT IN ELECTROSURGICAL GENERATORS - The present disclosure relates to an electrosurgical generator which includes a controller configured to generate a first pulse train having at least one first control pulse and at least one first reset pulse. The controller also includes a second pulse train having at least one second control pulse and at least one second reset pulse. The first control pulse(s) and the second control pulse(s) are asynchronous and the reset pulse(s) are synchronous. The electrosurgical generator also includes an RF output stage which includes a first switching element and a second switching element. The control pulses are configured to activate the first switching element and second switching elements, respectively, in an asynchronous fashion to generate a non-continuous RF waveform. | 07-18-2013 |
20130184699 | CREST FACTOR ENHANCEMENT IN ELECTROSURGICAL GENERATORS - The present disclosure relates to an electrosurgical generator which includes a controller configured to generate a first pulse train having at least one first control pulse and at least one first reset pulse. The controller also includes a second pulse train having at least one second control pulse and at least one second reset pulse. The first control pulse(s) and the second control pulse(s) are asynchronous and the reset pulse(s) are synchronous. The electrosurgical generator also includes an RF output stage which includes a first switching element and a second switching element. The control pulses are configured to activate the first switching element and second switching elements, respectively, in an asynchronous fashion to generate a non-continuous RF waveform. | 07-18-2013 |
20130184700 | SYSTEM AND METHOD FOR TEMPERATURE FEEDBACK FOR ADAPTIVE RADIO FREQUENCY ABLATION - A system and method for ablation include ablating ( | 07-18-2013 |
20130190747 | ELECTROPHYSIOLOGY SYSTEM AND METHODS - An electrophysiology system comprises an ablation catheter, a radiofrequency generator, and a mapping processor. The ablation catheter has a tissue ablation electrode and a plurality of microelectrodes distributed about the circumference of the tissue ablation electrode and electrically isolated therefrom. The plurality of microelectrodes define a plurality of bipolar microelectrode pairs. The mapping processor is configured to acquire output signals from the bipolar microelectrode pairs, compare the output signals, and generate an output to a display providing a visual indication of a characteristic of the microelectrodes and the tissue ablation electrode relative to myocardial tissue to be mapped and/or ablated. | 07-25-2013 |
20130190748 | DEVICES FOR THERMALLY-INDUCED HEPATIC NEUROMODULATION - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 07-25-2013 |
20130190749 | OPTICAL DETECTION OF INTERRUPTED FLUID FLOW TO ABLATION PROBE - An electrosurgical system includes an electrosurgical device adapted to direct energy to tissue and a fluid path leading to the electrosurgical device. The system also includes an optical sensor unit operably associated with the fluid path. The optical sensor unit includes a light-emitting element to generate light output and a light-receiving element to collect light outputted from the light-emitting element. The light-emitting element and the light-receiving element are disposed such that light output from the light-emitting element passes through the fluid path to the light-receiving element. The optical sensor unit is capable of detecting an air bubble in the fluid path passing through the optical sensor unit using a sensed characteristic of light collected at the light-receiving element. | 07-25-2013 |
20130190750 | SHIELDING FOR AN ISOLATION APPARATUS USED IN A MICROWAVE GENERATOR - A system for reducing radiated emissions the system including a microwave generator that supplies microwave energy at a fundamental frequency, a coaxial transmission cable that transmits microwave energy between the microwave generator and a microwave energy delivery device and an isolation apparatus connected between the microwave generator and the coaxial transmission cable. The isolation apparatus is configured to electrically isolate the coaxial transmission cable from the microwave generator and capacitively couple the microwave generator ground to the coaxial transmission cable. | 07-25-2013 |
20130197503 | Electrosurgical Apparatus with Integrated Energy Sensing at Tissue Site - An electrosurgical system is disclosed. The system includes an electrosurgical instrument having at least one electrode configured as a first sensor for measuring a voltage drop therethrough and a temperature sensor for a thermal sensor configured to measure a temperature difference across the at least one electrode; and a generator including an output stage coupled to the at least one electrode, the output stage configured to generate radio frequency energy; and a controller configured to determine actual radio frequency current based on the voltage drop and electrical resistivity of the at least one electrode and radio frequency power based on the measured temperature difference and the thermal conductivity of the at least one electrode. | 08-01-2013 |
20130197504 | MEDICAL DEVICES AND PUMPS THEREFOR - A microwave applicator device comprising a probe ( | 08-01-2013 |
20130197505 | TREATMENT OF TISSUE IN SPHINCTERS, SINUSES, AND ORIFICES - The invention comprises a method and apparatus for treatment of a body part. More particularly, a method and apparatus for heat treatment of tissue using a catheter inserted into a body part is described along with means for positioning the catheter and means for positioning a set of electrodes relative to a tissue sample for treatment. Still more particularly, radio frequency energy at about 400 to 500 kilohertz is used to provide heat for the tissue treatment. | 08-01-2013 |
20130197506 | FINE DISSECTION ELECTROSURGICAL DEVICE - An electrosurgical wand. At least some of the illustrative embodiments are electrosurgical wands including an elongate shaft that defines a handle end and a distal end, a first discharge aperture on the distal end of the elongate shaft, a first active electrode of conductive material disposed on the distal end of the elongate shaft, the first active electrode has an edge feature, a first return electrode of conductive material disposed a substantially constant distance from the first active electrode, and an aspiration aperture on the distal end of the elongate shaft fluidly coupled to a second fluid conduit. | 08-01-2013 |
20130197507 | MAP AND ABLATE OPEN IRRIGATED HYBRID CATHETER - An embodiment of an open-irrigated catheter system comprises a tip section, a distal insert, and mapping electrodes. The tip section has an exterior wall that defines an open interior region within the tip section. The exterior wall includes mapping electrode openings and irrigation ports. The exterior wall is conductive for delivering radio frequency (RF) energy for an RF ablation procedure. The irrigation ports are in fluid communication with the open interior region to allow fluid to flow from the open interior region through the irrigation ports. The distal insert is positioned within the tip section to separate the open region into a distal fluid reservoir and a proximal fluid reservoir. The mapping electrodes are positioned in the mapping electrode openings in the tip section. | 08-01-2013 |
20130211397 | ROBOTICALLY CONTROLLED SURGICAL INSTRUMENT - A surgical tool is disclosed. The surgical tool has a tool mounting portion having a tool mounting housing, a tool mounting plate, and a coupler to couple a shaft assembly with an articulation section to the tool mounting portion. An articulation mechanism is located within the tool mounting portion and is configured to receive a proximal end of the shaft assembly to articulate the articulation section of the shaft assembly. An interface mechanically and electrically couples the tool mounting portion to a manipulator. | 08-15-2013 |
20130211398 | ELECTROSURGICAL MEDICAL SYSTEM AND METHOD - A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system. | 08-15-2013 |
20130218154 | SYSTEMS AND METHODS FOR MAKING AND USING IMPLANTABLE ELECTRICAL SYSTEMS WITH LEADS THAT COUPLE TO MULTIPLE CONNECTOR PORTS - An electrical stimulation system includes a lead and a connector assembly. The lead includes electrodes, a first terminal array, a second terminal array, and conductors electrically coupling the electrodes to the terminal arrays. The connector assembly includes a first connector port that is open at opposing ends and that electrically couples to the first terminal array. The connector assembly also includes a second connector port that is open at a first end and electrically couples to the second terminal array. The lead and connector assembly simultaneously receive a first portion of the lead, containing the first terminal array, within the first connector port; extend a second portion of the lead out of one end of the first connector port and into the second connector port; and receive a third portion of the lead, containing the second terminal array, within the second connector port of the connector assembly. | 08-22-2013 |
20130218155 | METHOD OF USING ELECTROSURGICAL DEVICE FOR RESTRICTING LOSS OF BLOOD DURING SURGERY - A device for generating localized heating in a selected body tissue includes an applicator having a source of microwave radiation and an array of retractable needles arranged so as to extend from one face of the applicator and, in operation, to confine the irradiated microwave energy field emanating from the applicator. The device has application for controlling excessive bleeding from severed tissue during surgical procedures. | 08-22-2013 |
20130226166 | Renal Nerve Neuromodulation Device - A neuromodulation device includes an ablation valve with electrodes provided about its circumference. The valve dynamically reacts to fluid pressure within the vessel. When a pressure within and distal said ablation valve is greater than the body fluid pressure within the vessel, said ablation valve closes and the electrodes move out of contact with the endothelium of the vessel. When a pressure within and distal the ablation valve is less than the body fluid pressure upstream of the valve, the valve opens such that the electrodes are in circumferential contact with the endothelium. Fluid can be injected into the valve to alter the local pressure about the valve and force the electrodes into contact with the endothelium. | 08-29-2013 |
20130226167 | ENERGY DELIVERY DEVICES AND METHODS - This relates to methods and devices for achieving contact between the wall of a cavity or passageway and a medical device when used in tortuous anatomy. | 08-29-2013 |
20130231652 | TISSUE EXTRACTION DEVICES AND METHODS - A tissue resection device comprises inner and outer coaxial sleeves. The outer sleeve has a cutting window formed therein, and the inner sleeve has a distal cutting end that can be reciprocated past the cutting window. The sleeves comprise electrodes to provide electrosurgical cutting, and an edge portion of the window includes a dielectric material. | 09-05-2013 |
20130231653 | ABLATION DEVICES WITH ADJUSTABLE RADIATING SECTION LENGTHS, ELECTROSURGICAL SYSTEMS INCLUDING SAME, AND METHODS OF ADJUSTING ABLATION FIELDS USING SAME - An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. | 09-05-2013 |
20130231654 | SYSTEM FOR USE IN TREATMENT OF VERTEBRAL FRACTURES - Methods and devices that displace bone or other hard tissue to create a cavity in the tissue. Where such methods and devices rely on a driving mechanism for providing moving of the device to form a profile that improves displacement of the tissue. These methods and devices also allow for creating a path or cavity in bone for insertion of bone cement or other filler to treat a fracture or other condition in the bone. The features relating to the methods and devices described herein can be applied in any region of bone or hard tissue where the tissue or bone is displaced to define a bore or cavity instead of being extracted from the body such as during a drilling or ablation procedure. | 09-05-2013 |
20130231655 | INTERFERENCE REDUCTION AND SIGNAL TO NOISE RATIO IMPROVEMENT FOR ULTRASOUND CARDIAC ABLATION MONITORING - In cardiac ablation for treatment of atrial fibrillation where lesions have to be made to the heart wall, an ultrasound monitoring mechanism is adapted to assess the progress of the lesion, so that a surgeon can provide lesions with adequate depth, wherein interference caused by an ablation device is reduced and signal to noise ratio of echo signals is improved. | 09-05-2013 |
20130237979 | SYSTEMS AND METHODS FOR TREATING TISSUE WITH RADIOFREQUENCY ENERGY - A system for controlling operation of a radiofrequency treatment device to apply radiofrequency energy to tissue to heat tissue to create lesions without ablating the tissue. The system includes a first treatment device having at least one electrode for applying radiofrequency energy to tissue, a controller including a connector to which a first treatment device is coupled for use, and a generator for applying radiofrequency energy to the electrodes. The controller controls application of energy so that the tissue is thermally treated to create lesions but preventing thermal treatment beyond a threshold which would ablate the tissue. | 09-12-2013 |
20130237980 | SYSTEM AND METHOD FOR MONITORING ABLATION SIZE - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A radiation detection device is operably disposed on the microwave antenna. The radiation detection device is configured to generate a voltage corresponding to a radius of the ablation zone, wherein the radiation detection device is in operative communication with at least one module associated with the power source. The at least one module triggers a signal when a predetermined threshold voltage is measured corresponding to the radius of the ablation zone. | 09-12-2013 |
20130237981 | Tissue-Treatment Methods - Polymer insulators and methods of using polymer insulators are disclosed. In some embodiments, a method includes separating a first portion of a subject's tissue from a second portion of the subject's tissue so that there is a space between the first and second portions of tissue. Deionized water, a buffered saline solution, liquid polymers, gels, particles, foams, and/or gases are disposed between the first and second portions of tissue, and the first portion of tissue is exposed to energy to treat the first portion of tissue. | 09-12-2013 |
20130245620 | REDUCED ADVANCEMENT FORCE NEEDLE AND METHODS OF MANUFACTURE - A needle apparatus and method of manufacturing the same arc disclosed. The needle apparatus includes a tubular needle component having a handling end including a needle hub and an insertion end including a pointed portion configured for piercing tissue of a patient. The needle apparatus also includes a cover forming a sleeve surrounding the tubular needle component. The cover extends along an outer surface of the tubular needle component such that the insertion tip of the needle remains uncovered. The cover includes a tapered end coupled to the tubular needle component adjacent to the insertion tip of the needle. The tapered end of the cover has a taper angle of 5-20 degrees with respect to the outer surface of the tubular needle component. | 09-19-2013 |
20130253499 | METHOD AND APPARATUS FOR PROGRAMMING MODULAR SURGICAL INSTRUMENT - A surgical instrument operable to sever tissue includes a body assembly and a selectively coupleable end effector assembly. The end effector assembly may include a transmission assembly and an end effector. The body assembly includes a trigger and a casing having a distal aperture configured to receive a portion of the end effector assembly. First and second coupling mechanism portions cooperatively couple the end effector assembly to the body assembly for use. A cartridge positionable between the instrument and a generator includes information regarding operating parameters unique to the selectively coupleable end effector assembly and/or the desired surgical procedure, such as information regarding setting a maximum current set point within an ultrasonic transducer. The instrument is programmable with operating parameter information while within a sealed and sterilized packaging unit. | 09-26-2013 |
20130253500 | TISSUE ABLATION SYSTEM WITH INTERNAL AND EXTERNAL RADIATION SOURCES - According to one embodiment of the present disclosure a microwave ablation system is disclosed. The microwave ablation system includes an energy source adapted to generate microwave energy and a plurality of energy delivery devices having a first energy delivery device configured to be inserted into tissue and to generate a non-directional ablation volume and a second energy delivery device configured to be positioned relative to the tissue and to generate a directional ablation volume. The system also includes a power dividing device having an input adapted to connect to the energy source and a plurality of outputs configured to be coupled to the plurality of energy delivery devices. The power dividing device is configured to selectively divide energy provided from the energy source between the plurality of energy delivery devices. | 09-26-2013 |
20130261616 | PATIENT ISOLATION IN A MICROWAVE-RADIO FREQUENCY GENERATOR - The present disclosure provides an ablation system. The ablation system includes a generator having a first energy source that supplies a first type of energy to tissue. The generator also has a second energy source that supplies a second type of energy to tissue different from the first type of energy. A diplexer is also provided that is operable to multiplex the first type of energy from the first energy source and the second type of energy from the second energy source and provide an output to an ablation device. Additionally, the generator includes a first isolation device coupled to the first energy source and the diplexer, and a second isolation device coupled to the second energy source and the diplexer. | 10-03-2013 |
20130261617 | POWER-STAGE ANTENNA INTEGRATED SYSTEM WITH HIGH-STRENGTH SHAFT - Disclosed is a microwave antenna assembly that includes proximal and distal radiating sections and a junction member. The proximal radiating section includes inner and outer conductors and DC power and neutral conductors. The inner conductor is disposed within the outer conductor and the DC power and neutral conductors are disposed radially outward therefrom. The junction member mates the distal and proximal radiating sections such that the distal and proximal radiating sections are positioned relative to one another. The junction member further includes a microwave signal amplifier (MSA) that receives a signal at a first energy level from the inner and outer conductors and a DC power signal from the DC power and neutral conductors. The MSA amplifies the signal from the first energy level to an additional, greater energy level. The junction member provides the microwave signal at the additional energy level to the proximal and distal radiating sections. | 10-03-2013 |
20130261618 | VACUUM COAGULATION PROBES - Methods for using a surgical device integrating a suction mechanism with a coagulation mechanism for improving lesion creation capabilities. The device comprises an elongate member having an insulative covering attached about means for coagulating soft tissue. Openings through the covering expose regions of the coagulation-causing elements and are coupled to lumens in the elongate member which are routed to a vacuum source and a fluid source to passively transport fluid along the contacted soft tissue surface in order to push the maximum temperature deeper into tissue. | 10-03-2013 |
20130267940 | Feeding Structure for Dual Slot Microwave Ablation Probe - A dual slot microwave probe for tissue ablation provides axially spaced slots producing an improved heating pattern with reduced axial extent. Degradation in this heating pattern caused by the addition of ceramic support elements and/or fluid cooling is realized through a feeding structure delivering separate sources of microwave energy to the different slots of the probe aligned with the slots of the probe. | 10-10-2013 |
20130267941 | Radiation Applicator for Microwave Medical Treatment - A radiation applicator with a dielectric body ( | 10-10-2013 |
20130267942 | Surgical Needle with Enhanced Ultrasound Reflectivity - Notches in a surgical needle with means to retain small amounts of air or other reflective material while being passed through tissue will significantly enhance the ultrasound reflectivity to enhance the response to ultrasonic probing to provide an enhanced image. | 10-10-2013 |
20130267943 | ELECTROSURGICAL APPARATUS FOR RF AND MICROWAVE DELIVERY - A control system for electrosurgical apparatus in which the energy delivery profile of both RF EM radiation and microwave EM radiation delivered to a probe is set based on sampled voltage and current information of RF energy conveyed to the probe and/or sampled forward and reflected power information for the microwave energy conveyed to and from the probe. The energy delivery profile for the RF EM radiation is for tissue cutting (without requiring a sharp blade) and the energy delivery profile for the microwave EM radiation is for haemostasis or sealing or coagulation or ablation of tissue. The RF EM radiation and microwave EM radiation may be applied separately or simultaneously. | 10-10-2013 |
20130274728 | Apparatus and Method for Removing Occlusive Tissue - A tissue treatment apparatus for restoring patency in a body vessel is provided. The tissue treatment apparatus includes an elongated catheter dimensioned for insertion within a body vessel having an at least partial occlusion. Proximal and distal expandable segments are mounted to the elongated catheter and are positionable adjacent the occlusion and are configured to transition from a first condition to a second expanded condition. A mesh in operative engagement with the proximal and distal expandable segments is expandable radially outwardly from the catheter upon corresponding transition of the proximal and distal expandable segments to the second condition. The mesh includes a conductive material adapted to transmit electrosurgical energy to treat and facilitate removal of the occlusion, to thereby assist in restoring patency within the body vessel. | 10-17-2013 |
20130274729 | Electrosurgical Systems - An electrosurgical generator is provided and includes an RF energy output module and an energy request detection module both in communication with one or more processors of the electrosurgical generator. The RF energy module outputting RF energy through a first transformer, and the energy request detection module in electrical communication with primary windings of a second transformer. An electrosurgical instrument is provided and includes a housing, at least one treatment member and one or more switches. The switch is in electrical communication with the first transformer and is coupled to secondary windings of the second transformer such that when the at least one switch is moved to a closed configuration the energy detection module detects an occurrence at the second transformer and provides a signal to the at least one processor to transmit electrosurgical energy to the electrosurgical instrument. | 10-17-2013 |
20130274730 | ABLATION CATHETER AND METHODS FOR NERVE MODULATION - Ablative catheters and methods for making and using the same are disclosed. The catheter may have a proximal end, a distal end, and a first lumen extending at least partially between the proximal and distal ends. The catheter may include at least one ablative port located adjacent to the distal end of the catheter. The catheter may include an ablative mechanism capable of ablation using an conductive fluid circulated to the ablative port through the first lumen. An expandable member may be disposed at an outer surface of a distal portion of the catheter. The expandable member may be capable of switching between a collapsed position and an expanded position using an expansion fluid circulated to the expandable member through a second lumen. In the expanded position, the expandable member may be sized and shaped to position the ablative port at a suitable distance from a wall of the vessel. | 10-17-2013 |
20130274731 | HELICAL TUBING DEVICES AND METHODS FOR FLUID RENAL NERVE MODULATION - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft having a proximal end, a distal portion, and a lumen formed therein. The distal portion may be capable of shifting between a first configuration and a second helical configuration. The distal portion may have a plurality of fluid ports formed therein. An electrode may be disposed within the lumen. The electrode may be capable of transmitting energy through the plurality of fluid ports. | 10-17-2013 |
20130274732 | ROTATING TRANSDUCER MOUNT FOR ULTRASONIC SURGICAL INSTRUMENTS - In one general aspect, various embodiments are directed to an ultrasonic surgical instrument that comprises a handpiece housing that operably supports an electrical contact assembly therein that is in electrical communication with a signal source. An acoustic assembly is supported within the handpiece housing in rotatable contact with the electrical contact assembly. In various embodiments, the signal source produces at least one of an ultrasonic signal and a radio frequency signal. | 10-17-2013 |
20130274733 | ELECTROSURGICAL INSTRUMENT - A vessel sealing instrument having an instrument tip that comprises a pair of opposing clamping members movable to clamp a vessel to be sealed. The clamping members include an energy delivery structure capable of delivering localised radiofrequency (RF) electromagnetic (EM) energy and microwave EM energy separately or simultaneously into the vessel. The RF EM energy and the microwave EM energy are received in the energy delivery structure from a coaxial cable. Each energy delivery structure comprises first and second conductive elements separated by a planar dielectric layer. The first and second conductive elements are arranged at the opposed surface of the respective clamping member to act as active and return electrodes to transfer RF EM energy into biological tissue by conduction, and as an antenna to radiate microwave EM energy into biological tissue from the opposed surface. | 10-17-2013 |
20130281999 | METHOD OF PERFORMING MICROBEAM RADIOSURGERY - A method of performing microbeam radiosurgery on a patient whereby target tissue within a patient is irradiated with high energy electromagnetic radiation from an inverse Compton scattering radiation source via microbeam envelopes. | 10-24-2013 |
20130282000 | NON-ELECTRIC FIELD RENAL DENERVATION ELECTRODE - A renal denervation device can include an elongated catheter body extending along a longitudinal axis, and an assembly connected to the catheter body. The assembly includes a plurality of heating elements connected to the catheter body. Each heating element has a conductor and a layer of an RF dissipating material such as a polymer overlying the conductor. During operation of the device, the layer of RF dissipating material is disposed between the conductor and body tissues of a subject. The layer of RF dissipating material is substantially thicker than the Debye length within the material in order to reduce the electric field reaching the tissue and to eliminate direct contact of the electrode with the body tissue. | 10-24-2013 |
20130282001 | Monitoring of Neuromodulation Using Biomarkers - Provided herein are methods, devices, compositions, and kits for monitoring neuromodulation efficacy based on changes in the level or activity of one or more target biomarkers. | 10-24-2013 |
20130282002 | MICROWAVE SURGICAL TOOL - An object of the present invention is to provide a small-sized microwave surgical instrument that improves the convenience of surgical work. The microwave surgical instrument | 10-24-2013 |
20130289551 | INTERMITTENT SHORT CIRCUIT DETECTION ON A MULTI-ELECTRODE CATHETER - A method and system for detecting a short circuit during a radiofrequency ablation procedure. The method includes measuring an impedance of a pair of electrodes coupled to a treatment assembly of a medical device. Radiofrequency ablation energy is transmitted between the pair of electrodes. The transmission of radiofrequency ablation energy between the pair of electrodes is terminated when after a predetermined period of time the measured impedance in either of the electrodes in the pair of electrodes is below a predetermined threshold impedance value. An alert is generated indicating a short circuit between the pair of electrodes. | 10-31-2013 |
20130289552 | ABLATION PROBE HAVING A PLURALITY OF ARRAYS OF ELECTRODES - An ablation device includes a cannula having a lumen, a first array of electrodes deployable from within the lumen, and a second array of electrodes deployable from within the lumen, wherein the first array of electrodes has a configuration that is different from a configuration of the second array of electrodes. | 10-31-2013 |
20130289553 | RF ABLATION PROBES WITH TINE VALVES - A tissue ablation probe is provided. The tissue ablation probe comprises an elongated shaft, at least one electrode tine carried by the elongated shaft, at least one tine exit from which the electrode tine(s) can be deployed from the elongated shaft and retracted within the elongated shaft, and a sheath covering the electrode tine exit(s). | 10-31-2013 |
20130289554 | METHOD AND SYSTEM FOR INVASIVE SKIN TREATMENT - A system and method for simultaneously heating a plurality of discrete skin volumes to a coagulation temperature. The system comprises an applicator containing an electrode having a plurality of spaced apart protruding conducting elements configured to contact the skin surface at a plurality of discrete locations. A controller applies a voltage to the electrode so as to simultaneously heat a plurality of skin volumes to a coagulation temperature when the applicator is applied to the skin surface. | 10-31-2013 |
20130289555 | DELIVERY DEVICES WITH COOLABLE ENERGY EMITTING ASSEMBLIES - Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. | 10-31-2013 |
20130289556 | DELIVERY DEVICES WITH COOLABLE ENERGY EMITTING ASSEMBLIES - Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. | 10-31-2013 |
20130289557 | ELECTROSURGICAL INSTRUMENT WITH DUAL RADIOFREQUENCY AND MICROWAVE ELECTROMAGNETIC ENERGY - An electrosurgical instrument for delivering radiofrequency (RF) electromagnetic (EM) energy and microwave frequency EM energy from a coaxial feed cable through an instrument tip into tissue. The instrument tip comprises a dielectric body separating first and second conductive elements, which act as active and return electrodes to convey the RF EM radiation by conduction, and as an antenna to radiate the microwave EM radiation. The instrument also has a fluid feed incorporated into its tip, e.g. in an additional dielectric element mounted on the underside of the tip, for delivering fluid. The delivered fluid may be a gas plasma to assist treatment or a liquid to plump up a tissue region before treatment. The instrument may fit in an endoscope. | 10-31-2013 |
20130296839 | DETECTION OF MICROBUBBLE FORMATION DURING CATHETER ABLATION - A method and system for detecting microbubble formation during a radiofrequency ablation procedure. The method includes measuring an impedance of a pair of electrodes, at least one electrode in the pair of electrodes being coupled to a treatment assembly of a medical device. Radiofrequency ablation energy is transmitted between the pair of electrodes. The transmission of radiofrequency ablation energy between the pair of electrodes is terminated when after a predetermined period of time the measured impedance in either of the electrodes in the pair of electrodes is a predetermined percentage above a measured minimum impedance and a measured power is above a predetermined power threshold. An alert is generated indicating at least one of the formation and release of microbubbles proximate the pair of electrodes. | 11-07-2013 |
20130296840 | SYSTEMS AND METHODS FOR DETECTING TISSUE CONTACT DURING ABLATION - Systems and methods for assessing tissue contact, including positioning an electrode adjacent a tissue region; delivering radiofrequency energy to the electrode, wherein the delivered radiofrequency energy is sufficient to ablate at least a portion of the tissue region; obtaining a plurality of impedance measurements from the electrode during the delivery of the radiofrequency energy; calculating a change in the impedance measurements over a pre-determined time period; and generating an alert if the calculated change is less than a pre-defined value. | 11-07-2013 |
20130296841 | Peripheral Switching Device for Microwave Energy Platforms - An electrosurgical system is provided and includes a power source, a microwave applicator, a switching mechanism and a controller. The power source is configured to generate microwave energy. The microwave applicator is configured to deliver microwave energy from the power source to tissue. The switching mechanism includes a housing having input and output ports. The input port is connectable to the power source and the output port is connectable to the microwave applicator. The housing is configured to house one or more switches therein. The controller is in operative communication with the switching mechanism to toggle the switch from a first state, wherein microwave energy generated by the power source is directed to the microwave applicator to a second state, wherein microwave energy is directed to a resistive load operably coupled to the switching mechanism. | 11-07-2013 |
20130296842 | ENDOSCOPIC SURGICAL INSTRUMENT - What is disclosed is an endoscopic surgical instrument with a hose-shaped outside jacket, in which a likewise hose-shaped inside jacket is supported relatively displaceable, on whose distal end section a sleeve or shaft-shaped instrument head is formed or mounted. In the instrument head is fixed a needle-shaped RF electrode electrically-insulated, whose electrical supply line is routed through the inside jacket, and which projects freely beyond the distal end of the instrument head in the axial direction. In the instrument head is formed a flush channel, extending at least axially, opening at both instrument head ends. | 11-07-2013 |
20130296843 | ELECTROSURGICAL DEVICE FOR CUTTING AND COAGULATING - An apparatus for operating on tissue comprises a first arm, a second arm, a firing beam, a lockout feature, and a scissor grip portion. The first and second arms include first and second jaws, respectively. The jaws each include a respective electrode operable to deliver bipolar RF energy to tissue. The firing beam is operable to translate distally through the first and second jaws to sever tissue captured between the first and second jaws. The lockout feature is operable to selectively prevent translation of the firing beam. The scissor grip portion is operable to pivot the first arm toward the second arm. The apparatus may include a disposable cartridge assembly removably coupled with a reusable grip assembly. The cartridge assembly may include the first and second jaws. A sliding actuator may be used to translate a firing beam. A lockout feature may selectively restrict translation of the sliding actuator. | 11-07-2013 |
20130296844 | RF ENERGY DELIVERY SYSTEM AND METHOD - Devices, systems and methods are disclosed for the ablation of tissue. A steerable ablation catheter can include one or more ablation elements at its distal end and one or more ablation elements fixedly attached to its shaft. The distal end of the ablation catheter can be deflected to assume a number of different deflection geometries in at least one direction along the shaft. One feature of the ablation catheter is that its shaft can comprise materials of differing durometers or stiffnesses attached together at a joint. Methods associated with use of the ablation catheter are also covered. | 11-07-2013 |
20130304049 | System and Method for Directing Energy to Tissue - An electrosurgical system includes an electrosurgical power generating source, an energy applicator operably associated with the electrosurgical power generating source, a processor unit, and a data acquisition module configured to receive a reflected signal. The processor unit is disposed in operative communication with the data acquisition module and adapted to determine a tissue desiccation rate around at least a portion of the energy applicator based on one or more signals received from the data acquisition module. | 11-14-2013 |
20130304050 | METHODS OF TREATING CANCEROUS TISSUE - In one aspect, methods of treating cancerous tissue are described herein. In some embodiments, a method of treating cancerous tissue comprises inducing necrotic cell death in cancer stem cells in vivo during hyperthermic treatment of the tissue, wherein inducing necrotic cell death comprises positioning nanoparticles adjacent to the cancer stem cells and irradiating the nanoparticles with electromagnetic radiation resulting in membrane damage to the cancer stem cells. | 11-14-2013 |
20130304051 | TRANSSEPTAL NEEDLE APPARATUS - In various examples, an apparatus includes a needle cannula including a proximal end and a distal end The needle cannula includes a lumen extending from the proximal end to the distal end. A handle is disposed at the proximal end of the needle cannula. An electrocautery receiver is associated with the handle and electrically coupled to the needle cannula, wherein, with an electrocautery device activated and placed within the electrocautery receiver, electrical energy is conducted from the electrocautery device to the distal end of the needle cannula to selectively electrocauterize tissue in contact with the distal end of the needle cannula. | 11-14-2013 |
20130304052 | RENAL NERVE MODULATION DEVICES - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a renal nerve modulation device. The renal nerve modulation device may include an elongate shaft. A balloon may be coupled to the shaft. The balloon may have a hydrophilic electrode region. A sensor may be coupled to the balloon and may be disposed adjacent to the hydrophilic electrode region. An electrode may be coupled to the catheter shaft and may be disposed within the balloon. | 11-14-2013 |
20130304053 | TISSUE TREATMENT APPARATUS WITH FUNCTIONAL MECHANICAL STIMULATION AND METHODS FOR REDUCING PAIN DURING TISSUE TREATMENTS - Apparatus and methods for delivering electromagnetic energy to a patient's tissue with a reduction in the pain experienced by the patient. The tissue treatment apparatus includes a delivery device configured to transfer electromagnetic energy through the skin surface to a region of tissue and a vibration device mechanically coupled with the delivery device. The vibration device is configured to transfer mechanical vibrations through the skin surface to the region of tissue. | 11-14-2013 |
20130304054 | METHODS AND APPARATUS FOR PERFORMING RENAL NEUROMODULATION VIA CATHETER APPARATUSES HAVING INFLATABLE BALLOONS - Methods and apparatus are provided for non-continuous circumferential treatment of a body lumen. Apparatus may be positioned within a body lumen of a patient and may deliver energy at a first lengthwise and angular position to create a less-than-full circumferential treatment zone at the first position. The apparatus also may deliver energy at one or more additional lengthwise and angular positions within the body lumen to create less-than-full circumferential treatment zone(s) at the one or more additional positions that are offset lengthwise and angularly from the first treatment zone. Superimposition of the first treatment zone and the one or more additional treatment zones defines a non-continuous circumferential treatment zone without formation of a continuous circumferential lesion. Various embodiments of methods and apparatus for achieving such non-continuous circumferential treatment are provided. | 11-14-2013 |
20130304055 | APPARATUS FOR EVALUATING THE INTEGRITY OF A UTERINE CAVITY - Methods, systems and devices for evaluating the integrity of a uterine cavity. A method comprises introducing transcervically a probe into a patient's uterine cavity, providing a flow of a fluid (e.g., CO2) through the probe into the uterine cavity and monitoring the rate of the flow to characterize the uterine cavity as perforated or non-perforated based on a change in the flow rate. If the flow rate drops to zero or close to zero, this indicates that the uterine cavity is intact and not perforated. If the flow rate does not drop to zero or close to zero, this indicates that a fluid flow is leaking through a perforation in the uterine cavity into the uterine cavity or escaping around an occlusion balloon that occludes the cervical canal. | 11-14-2013 |
20130304056 | TARGETED COOLING OF DEPLOYABLE MICROWAVE ANTENNA - The present disclosure relates to devices and methods for the treatment of tissue with microwave energy, The devices and methods disclosed herein utilize an antenna assembly which includes an elongate member, an outer conductor, an inner conductor, at least a portion of which is deployable, and a cooling system. The cooling system disclosed herein may significantly curtail any theoretical, or potential negative effects upon the target tissue experienced during the transmission of microwave energy to the antenna assembly due to ohmic heating. | 11-14-2013 |
20130304057 | ELECTROSURGICAL DEVICES WITH CHOKE SHORTED TO BIOLOGICAL TISSUE - A device for directing energy to tissue includes a feedline and a radiating portion electrically coupled to the feedline. The radiating portion includes a distal radiating section and a proximal radiating section. The feedline includes an inner conductor, an outer conductor and a first dielectric material disposed therebetween. The device also includes a choke disposed around at least a portion of the feedline. The choke includes a second dielectric material disposed around at least a portion of the outer conductor, wherein the second dielectric material includes at least one opening defined therein, and an electrically-conductive member disposed in the at least one opening electrically coupled to the outer conductor, wherein the electrically-conductive member is configured to contact tissue. | 11-14-2013 |
20130310823 | Endovascular Catheters and Methods for Carotid Body Ablation - Systems, devices, and methods for treating a patient having a sympathetically mediated disease associated at least in part with augmented peripheral chemoreflex or heightened sympathetic activation. The treatments include ablating one or more peripheral chemoreceptors or associated afferent nerves to reduce or remove afferent neural signals from the peripheral chemoreceptor. | 11-21-2013 |
20130310824 | SYSTEM FOR DETECTING, ACTIVELY TARGETING AND SELECTIVELY TREATING MALIGNANT CELLS IN HUMAN BODY BY NON-INVASIVE PROCEDURE - The embodiments herein provide a system and method for detecting, actively targeting and selectively treating the biological targets in a human body by a non-invasive procedure. The system comprises an electromagnetic inductor supported at a predetermined height and rotated to generate a high frequency magnetic field. A head rest is provided at one end of a non-metallic bed provided at the center of the inductor for supporting a patient. A track is arranged below the bed to move the bed and the patient to a desired position indicated by a laser beam to efficiently aim at the targets. The electromagnetic inductor produces electric, magnetic and thermal effects on the nano-conductors attached to the biological targets to activate a nano drug infused into the blood stream of a patient and attached to the surface of the targets to dysfunction or destroy the targets. | 11-21-2013 |
20130310825 | IRRIGATED CATHETER WITH IMPROVED FLUID FLOW - An irrigated catheter with uniform cooling and/or uniform fluid distribution in longitudinally spaced apart elution holes by varying the diameter of a fluid delivery lumen. A number of elution holes are provided in a tip region of a catheter body, and these elution holes are in fluid communication with the lumen through ducts. The fluid delivery lumen may be provided with a flow constrictor to restrict flow of fluid towards the distal region. | 11-21-2013 |
20130317493 | VOLTAGE THRESHOLD ABLATION APPARATUS - The present invention relates to the field of electrosurgery, and more particularly to systems and methods for ablating, cauterizing and/or coagulating body tissue using radio frequency energy. More in particular, the systems utilize voltage threshold means for controlling the voltage applied to tissue in a cycle-to-cycle manner. | 11-28-2013 |
20130317494 | ELECTROSURGICAL MEDICAL SYSTEM AND METHOD - A method for mitigating leakage in an RF electrosurgical generator includes delivering an RF signal from an RF electrosurgical generator to an electrosurgical electrode by way of a patient box; providing a balanced and symmetrical shielded transmission line coupling said electrosurgical generator disposed in a first housing to said patient box disposed in a second, different housing; providing a common mode choke in said patient box, said common mode choke including an output winding and a return winding, said output winding and said return winding spaced apart and in parallel to maintain a desired impedance, said output winding comprising a wire carrying said RF signal as an output signal and said return winding carrying a return signal from a return electrode; and directing a common mode signal from said RF signal to said common mode choke thereby blocking said common mode signal. | 11-28-2013 |
20130317495 | BROADBAND MICROWAVE APPLICATOR - A microwave ablation probe for providing microwave energy to tissue is disclosed. The probe includes a feedline having an inner conductor, an insulating spacer and an outer conductor. The probe also includes a radiation portion having an extruded portion of the inner conductor that is centrally disposed therein. The radiation portion also includes one or more conductive disks disposed on the extruded portion of the inner conductor that defines one or more spaces and a dielectric material disposed within the spaces. | 11-28-2013 |
20130324991 | SURGICAL INSTRUMENT WITH STRESS SENSOR - An apparatus includes an end effector, an energy component, a control module, and a directional force sensor assembly associated with the energy component and control module. The directional force assembly can include a piezoelectric disc, a piezoresistive element, an accelerometer, and/or a Hall Effect sensor. The end effector of the apparatus can include ultrasonic blade, an RF electrode, or a staple driving assembly. In some versions, the energy component includes an ultrasonic transducer. The control module may be configured to operate the energy component at a first energy setting in response to a first detected force and at a second energy setting in response to a second detected force. The apparatus may also include an activation feature to be operated by a user. In some versions the piezoelectric disc may include a plurality of segments and may be configured to induce movement in at least part of the energy component. | 12-05-2013 |
20130324992 | RADIO SCLEROTHERAPY SYSTEM - A radio frequency sclerotherapy system includes a needle assembly with a thin (26 to 32 gauge) solid conductive needle, about 1.25 inches long. A multilayer coating is applied over a proximal portion of the needle leaving an uncoated distal tip, about 0.10 inches long, exposed. The multilayer coating is an electric and thermal insulator. An electrical plug electrically coupled to the proximal end of the wire. The multilayer coating provides a palpable transition. A generator supplies voltages in the range of 300V to −100V, at frequencies of 1 MHz to 50 MHz, with voltage spikes having a time from rise to fall of up to 100 nS and a low voltage between voltage spikes for about twice the duration of the time from rise to fall of the voltage spikes. | 12-05-2013 |
20130324993 | SYSTEMS AND METHODS FOR RADIOMETRICALLY MEASURING TEMPERATURE AND DETECTING TISSUE CONTACT PRIOR TO AND DURING TISSUE ABLATION - The present invention provides systems and methods for radiometrically measuring temperature and detecting tissue contact during ablation. An interface module includes a first input/output (I/O) port for receiving radiometer and thermocouple signals from an integrated catheter tip (ICT) that includes a radiometer; a second I/O port for receiving ablative energy from an electrosurgical generator; a temperature display; a patient relay; a computer-readable medium storing radiometer and thermocouple parameters and instructions for causing the processor to: calculate a temperature adjacent to the ICT based on the radiometer and thermocouple signals and the parameters; causing the temperature display to display the calculated temperature; closing the patient relay to pass ablative energy from the second to the first I/O port; determining whether the ICT is in contact with tissue based on the radiometer signal. An output device indicates whether the ICT is determined to be in contact with the tissue. | 12-05-2013 |
20130324994 | BACK PAIN TREATMENT METHODS - Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. The modulation may be performed by a neuromodulation device (e.g., an energy delivery device). | 12-05-2013 |
20130324995 | SYSTEMS AND METHODS FOR TREATING TISSUE OF A PASSAGEWAY WITHIN A BODY - The present disclosure is directed to a method for treating tissue in a passageway within a body. The method may include positioning a medical device adjacent a treatment site in the passageway. The medical device may include an elongate member having a proximal end and a distal end, and an energy emitting portion positioned adjacent the distal end. The method may further include supplying an amount of energy from an energy source to the energy emitting portion. A first portion of the amount of the energy may be transmitted through the energy emitting portion to the tissue and a second portion of the amount of energy may be reflected from the energy emitting portion. The method may further include monitoring a signal corresponding to one of the first portion of the amount of energy and the second portion of the amount of energy. | 12-05-2013 |
20130324996 | VERTEBRAL TREATMENT - Methods and systems for modulating intraosseous nerves (e.g., nerves within bone) are provided. For example, the methods and systems described herein may be used to modulate (e.g., denervate, ablate) basivertebral nerves within vertebrae. The modulation of the basivertebral nerves may facilitate treatment of chronic back pain. The modulation may be performed by a neuromodulation device (e.g., an energy delivery device). | 12-05-2013 |
20130324997 | CHANNELING PATHS INTO BONE - System and methods are shown having a tube-within-tube assembly with a deployable curved deflectable tube or cannula that deploys from a straight cannula or trocar. The curved cannula has a pre-curved distal end to create an angular range of 0° to 180° when fully deployed from the straight trocar. The curve is configured such that the flexible element carrying a treatment device can navigate through the angular range of deployment of the curved cannula. The curved cannula allows the flexible element to navigate through a curve within bone without veering off towards an unintended direction. | 12-05-2013 |
20130331831 | ABLATION CATHETER - Devices, systems and methods are disclosed for the ablation of tissue. Embodiments include an ablation catheter which has an array of ablation elements attached to a deployable carrier assembly. The carrier assembly can be constrained within the lumen of a catheter, and deployed to take on an expanded condition. | 12-12-2013 |
20130331832 | ELECTRODE CATHETER DEVICE - An implantable electrode catheter device comprising an inner electrode catheter and an outer electrode catheter. The outer electrode catheter including a catheter shaft having at least one electrode at a distal end and a lumen to receive the inner electrode catheter therein. The outer electrode is adjustable or movable relative to the inner electrode catheter in an axial direction. The inner electrode catheter has a fixation element disposed at a distal end. The inner electrode catheter together with the fixation element forms an indifferent electrode whereby radio frequency catheter ablation occurs between the electrode and the indifferent electrode. | 12-12-2013 |
20130331833 | DEBRIDEMENT DEVICE AND METHOD - Devices, systems and methods for cutting and sealing of tissue such as bone and soft tissue. Devices, systems and methods include delivery of energy including bipolar radiofrequency energy for sealing tissue which may be concurrent with delivery of fluid to a targeted tissue site. Devices include debridement devices which may include a fluid source. Devices include inner and outer shafts coaxially maintained and having cutters for debridement of tissue. An inner shaft may include electrodes apart from the cutter to minimize trauma to tissue during sealing or hemostasis. Devices may include a single, thin liner or sheath for electrically isolating the inner and outer shafts. | 12-12-2013 |
20130331834 | ELECTROSURGICAL DEVICE WITH CONTROLLABLE ELECTRIC FIELD PROFILE - An electrosurgical device includes a plurality of electrodes arranged to form a tissue treatment surface and a power supply. The power supply is configured to deliver a first drive signal with a first phase to at least a first one of the plurality of electrodes and a second drive signal with a second phase to at least a second one of the plurality of electrodes such that an electric field extends from the tissue treatment surface, where the first phase and the second phase are different. The power supply is further configured to receive an input from an operator of the electrosurgical device, and adjust the first phase or the second phase such that an aspect of the electric field extending from the tissue treatment surface changes in response to the input from the operator. | 12-12-2013 |
20130331835 | Electrosurgical Tissue Treatment Method and Device - A device for treating spinal tissue of a patient's body may include an energy source and first and second probe assemblies. Each of the probe assemblies may have an electrically conductive energy delivery device electrically coupled to the energy source, and may also have an electrothermal device for cooling the probe assembly. The device is configured so that the energy source delivers energy to the spinal tissue through the energy delivery devices in a bipolar mode that concentrates delivered energy between the energy delivery devices to create a lesion within the spinal tissue while the electrothermal devices cool the probe assemblies. Related methods of use include cooling, at times via an electrothermal device. | 12-12-2013 |
20130338660 | RF SEALING INSTRUMENT - A bipolar RF sealing instrument includes two instrument branches which are movable relative to one another at least to an open and a closed position, and an instrument handle with two handle units, each associated with a respective instrument branch and coupled for manually operating the instrument branches and for applying to the instrument branches a predetermined closing force at the closed position, a first of the two instrument branches having a terminal for an external RF generator and the second instrument branch adapted to be electrically coupled via an instrument-internal power contact with the first instrument branch. The power contact may be a spring contact for contact closure at a closure position. In addition or alternatively, an instrument-internal control switch is present and only activated when the predetermined closing force is reached, to enable the supply of electric current from an external RF generator to the instrument branch(es). | 12-19-2013 |
20130338661 | Tissue Impedance Measurement Using a Secondary Frequency - An microwave ablation system includes a generator including a first energy source, a second energy source and a diplexer, the diplexer multiplexes a first energy from the first energy source and a second energy from the second energy source. The system also includes a cable including a center conductor and an outer sheath where the multiplexed energy is transmitted through the center conductor. In addition an antenna is provided that is operable to receive the multiplexed energy from the center conductor and to deliver the multiplexed energy to a region of tissue. The outer sheath acts as a return path of the second energy to the second energy source. A sensor is also provided that measures at least one parameter of the second energy generated by the second energy source and the second energy returned from the region of tissue. | 12-19-2013 |
20130345689 | MEDICAL DEVICE - A medical device is described having a handle and an end effector coupled to the handle. The end effector has at least one electrode for providing electrical signals to a tissue or vessel to be treated. An RF drive circuit is provided for generating an RF drive signal that is applied to the end effector electrode. The RF drive circuit includes a resonant circuit and a frequency controller is used to vary the frequency of a signal passed through the resonant circuit in order to control the power supplied to the end effector electrode. | 12-26-2013 |
20130345690 | HIGH-FREQUENCY TREATMENT DEVICE - A high-frequency treatment device includes a tubular body having a front end portion and a rear end portion; an operating handle having a high-frequency port and a main push rod extending through the body, the operating handle slidably fitted to the body; a front tube having a rear end portion connected to the front end portion of the body; an auxiliary push rod rotatably connected to the main push rod, the auxiliary push rod extending into the front tube; a wire fixed to the auxiliary push rod, the wire extending through the front tube; a rotary knob rotatably attached to the body, the rotary knob configured to rotate together with the auxiliary push rod and the wire; and an arc-shaped knife fixed to the wire and connected to the high-frequency port of the operating handle via the wire, the auxiliary push rod and the main push rod. | 12-26-2013 |
20130345691 | MICROWAVE THERMOMETRY FOR MICROWAVE ABLATION SYSTEMS - A microwave ablation system incorporates a microwave thermometer that couples to a microwave transmission network connecting a microwave generator to a microwave applicator to measure noise temperature. The noise temperature is processed to separate out components the noise temperature including the noise temperature of the tissue being treated and the noise temperature of the microwave transmission network. The noise temperature may be measured by a radiometer while the microwave generator is generating the microwave signal or during a period when the microwave signal is turned off. The microwave ablation system may be configured as a modular system having one or more thermometry network modules that are connectable between a microwave applicator and a microwave generator. Alternatively, the modular system includes a microwave generator, a microwave applicator, and a microwave cable that incorporate a microwave thermometry network module. | 12-26-2013 |
20130345692 | MICROWAVE THERMOMETRY FOR MICROWAVE ABLATION SYSTEMS - A microwave ablation system incorporates a microwave thermometer that couples to a microwave transmission network connecting a microwave generator to a microwave applicator to measure noise temperature. The noise temperature is processed to separate out components the noise temperature including the noise temperature of the tissue being treated and the noise temperature of the microwave transmission network. The noise temperature may be measured by a radiometer while the microwave generator is generating the microwave signal or during a period when the microwave signal is turned off. The microwave ablation system may be configured as a modular system having one or more thermometry network modules that are connectable between a microwave applicator and a microwave generator. Alternatively, the modular system includes a microwave generator, a microwave applicator, and a microwave cable that incorporate a microwave thermometry network module. | 12-26-2013 |
20130345693 | MICROWAVE THERMOMETRY FOR MICROWAVE ABLATION SYSTEMS - A microwave ablation system incorporates a microwave thermometer that couples to a microwave transmission network connecting a microwave generator to a microwave applicator to measure noise temperature. The noise temperature is processed to separate out components the noise temperature including the noise temperature of the tissue being treated and the noise temperature of the microwave transmission network. The noise temperature may be measured by a radiometer while the microwave generator is generating the microwave signal or during a period when the microwave signal is turned off. The microwave ablation system may be configured as a modular system having one or more thermometry network modules that are connectable between a microwave applicator and a microwave generator. Alternatively, the modular system includes a microwave generator, a microwave applicator, and a microwave cable that incorporate a microwave thermometry network module. | 12-26-2013 |
20130345694 | ELECTROPHYSIOLOGY ELECTRODE HAVING MULTIPLE POWER CONNECTIONS AND ELECTROPHYSIOLOGY DEVICES INCLUDING THE SAME - An electrophysiology electrode having multiple power connections and electrophysiology devices including the same. | 12-26-2013 |
20140005652 | MOTORIZED SURGICAL CUTTING AND FASTENING INSTRUMENT | 01-02-2014 |
20140005653 | SURGICAL END EFFECTORS HAVING ANGLED TISSUE-CONTACTING SURFACES | 01-02-2014 |
20140005654 | LOCKOUT MECHANISM FOR USE WITH ROBOTIC ELECTROSURGICAL DEVICE | 01-02-2014 |
20140005655 | ELECTROSURGICAL DEVICES HAVING DIELECTRIC LOADED COAXIAL APERTURE WITH DISTALLY POSITIONED RESONANT STRUCTURE AND METHOD OF MANUFACTURING SAME | 01-02-2014 |
20140005656 | HELICAL CONNECTOR ASSEMBLY | 01-02-2014 |
20140005657 | MICROWAVE ANTENNA PROBES | 01-02-2014 |
20140005658 | METHOD AND APPARATUS FOR COSMETIC SKIN TREATMENT | 01-02-2014 |
20140005659 | Method of Treating Tissue with Radio Frequency Vascular Electrode Array | 01-02-2014 |
20140005660 | SPHINCTER TREATMENT APPARATUS | 01-02-2014 |
20140012247 | ENDOSCOPIC CAP ELECTRODE AND METHOD FOR USING THE SAME - An apparatus for treating tissue in a tissue treatment region. The apparatus can comprise an electrode ring having an interior perimeter and an electrode probe having a proximal end and a distal end. The distal end of the electrode probe can be structured to axially translate relative to the interior perimeter of the electrode ring. The electrode ring and the electrode probe can be operably structured to conduct current therebetween when at least one of the electrode ring and the electrode probe is energized by an energy source. Further, the energy source can be a Radio Frequency (RF) energy source, a pulsed energy source, an irreversible electroporation energy source, or a pulsed irreversible electroporation energy source. A current from the energy source can be selected to non-thermally ablate tissue in the tissue treatment region. | 01-09-2014 |
20140012248 | APPARATUS AND METHOD FOR GASTRIC BYPASS SURGERY - A medical treatment device includes an elongate member having an internal volume, a proximal end, and a distal end, the internal volume extending from the proximal end to the distal end. The medical treatment device further includes a first coupler and a second coupler, the first coupler and the second coupler coupled to the internal volume of the elongate member; a first joining member and a second joining member, the first joining member coupled to the first coupler and the second joining member coupled to the second coupler. The first joining member is configured to attach to a first biological matter location, and the second joining member is configured to attach to a second biological matter location, the second location being distal to the first location. The second coupler is configured for manipulation to align relative the first coupler such that the second biological matter location relocates adjacent the first biological matter location. The first joining member and the second joining member are configured to join the first biological matter location to the second biological matter location. | 01-09-2014 |
20140012249 | ENDOMETRIAL ABLATION DEVICES AND SYSTEMS - Systems and methods for endometrial ablation. The systems include a handle and elongated introducer sleeve extending to an expandable working end having a fluid-tight interior chamber. A thin dielectric wall surrounds at least a portion of the interior chamber and has an external surface for contacting endometrial tissue. The thin dielectric wall surrounds a collapsible-expandable frame and receives an electrically non-conductive gas. First and second polarity electrodes are exposed to the interior and exterior of the chamber, respectively. A radiofrequency power source operatively connects to the electrode arrangement to apply a radiofrequency voltage across the first and second electrodes, wherein the voltage is sufficient to initiate ionization of the neutral gas into a conductive plasma within the interior chamber, and to capacitively couple the current in the plasma across the thin dielectric wall to ablate endometrial tissue engaged by the external surface of the dielectric structure. | 01-09-2014 |
20140012250 | MICROWAVE ANTENNA - According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port. | 01-09-2014 |
20140012251 | ABLATION DEVICES AND METHODS - An ablation device for denervation including a catheter delivery mechanism including an elongated tube with a distal end and a proximal end, the distal end being emplaceable within a body lumen at a target nerve region. A guide wire, at least one radiofrequency electrode, a plurality of positioning elements, and a plurality of pressing elements initially located within the tube. The electrode being deployable from the tube at the target nerve region and forming a ring-shaped structure adjacent the distal tube end. The positioning elements being deployable from the tube at the target nerve region from a position of the tube further distal than the electrode. The pressing elements being deployable from the tube more proximal than the electrode for use in pressing the deployed electrode against tissue to be ablated. | 01-09-2014 |
20140012252 | AORTIC DISSECTION SEPTAL CUTTING TOOL - The present invention relates to methods of using medical cutting tools for treating aortic septal dissections. | 01-09-2014 |
20140012253 | Variable-Output Radiofrequency Ablation Power Supply - A medical system is provided, including an ablation system having at least one ablation element and a sensor, a generator operable to deliver radiofrequency ablation energy to the ablation element. A power supply defines a duty cycle and provides a voltage to the generator, and the power supply has a duty cycle modulator and an amplitude modulator. A processor is connected to the power supply, the generator, and the sensor. The processor obtains a feedback signal from the sensor, and adjusts the duty cycle modulator and the amplitude modulator according to the feedback signal. | 01-09-2014 |
20140012254 | CARDIAC TREATMENT DEVICES AND METHODS - Devices and methods provide for ablation of cardiac tissue for treating cardiac arrhythmias such as atrial fibrillation. Although the devices and methods are often be used to ablate epicardial tissue in the vicinity of at least one pulmonary vein, various embodiments may be used to ablate other cardiac tissues in other locations on a heart. Devices generally include at least one tissue contacting member for contacting epicardial tissue and securing the ablation device to the epicardial tissue, and at least one ablation member for ablating the tissue. Various embodiments include features, such as suction apertures, which enable the device to attach to the epicardial surface with sufficient strength to allow the tissue to be stabilized via the device. For example, some embodiments may be used to stabilize a beating heart to enable a beating heart ablation procedure. Many of the devices may be introduced into a patient via minimally invasive introducer devices and the like. Although devices and methods of the invention may be used to ablate epicardial tissue to treat atrial fibrillation, they may also be used in veterinary or research contexts, to treat various heart conditions other than atrial fibrillation and/or to ablate cardiac tissue other than the epicardium. | 01-09-2014 |
20140018787 | CARTILAGE TREATMENT PROBE - An electrosurgical instrument for ablating cartilage while limiting collateral damage includes a non-conducting head with a small electrically conductive surface. The head of the instrument is coupled to a shaft by a flexible portion. The flexible portion biases the electrically conductive surface towards a tissue surface. The head is pivotably coupled to the shaft such that the electrically conductive surface is oriented substantially parallel to the tissue surface as the head slides across the tissue surface. A method of performing electrosurgery includes positioning the electrically conductive surface adjacent to the tissue surface, and sliding the shaft across the tissue surface with the head pivoting such that the electrically conductive surface is oriented substantially parallel to the tissue surface. | 01-16-2014 |
20140018788 | Devices and Systems for Carotid Body Ablation - Methods and endovascular catheters for assessing, and treating patients having sympathetically mediated disease, involving augmented peripheral chemoreflex and heightened sympathetic tone by reducing chemosensor input to the nervous system via transmural carotid body ablation. | 01-16-2014 |
20140018789 | ENERGY DELIVERY DEVICES AND METHODS - A method for treating a subject includes positioning an intraluminal device at a treatment location in an airway of the subject, and delivering energy from an electrode of the intraluminal device to nerve tissue extending along the airway so as to permanently damage the nerve tissue while cooling airway tissue disposed radially between the electrode and the nerve tissue. | 01-16-2014 |
20140018790 | ENERGY DELIVERY DEVICES AND METHODS - A method of treating an airway includes inserting a treatment device into the airway, wherein the treatment device includes an energy delivery element configured to deliver energy to tissue of the airway, advancing the treatment device to a treatment location in the airway, activating the energy delivery element to deliver energy to tissue at the treatment location, and cooling tissue near the treatment location simultaneously with the activating step. | 01-16-2014 |
20140025058 | ABLATION DEVICE WITH INTERNALLY COOLED ELECTRODES - An electrosurgical end effector for ablating tissue is provided that comprises at least one electrically-conductive ablation member adapted to be connected to a source of RF energy, with the ablation member having a tissue engaging surface and defining an internal fluid passageway. Preferably, the end effector includes two electrically conductive ablation members that are electrically isolated from one another and have their fluid passageways in fluid communication. Alternatively, the end effector may comprise four electrically conductive ablation members arranged as two pairs of ablation members, all of the ablation members having internal fluid passageways that are electrically isolated from each other, with the fluid passageways of each of the four ablation members being in fluid communication with each other. | 01-23-2014 |
20140025059 | FINGER-MOUNTABLE ABLATION DEVICE - A surgical device is disclosed, and includes a pair of finger-mountable annular members, each having an electrode disposed thereon. An optical member is disposed on at least one of the pair of finger-mountable annular members and has a first set of light transmitting properties corresponding to a first set of physical parameters of at least one of the finger-mountable annular members. At least one finger-mountable annular member is configured to transition to a second set of physical parameters being different from the first set of physical parameters. The optical member is configured to transition from a first set of light transmitting properties to a second set of light transmitting properties, the second set of light transmitting properties corresponding to the second set of physical parameters, the second set of light transmitting properties being different from the first set of light transmitting properties. | 01-23-2014 |
20140025060 | ELECTROSURGICAL DEVICE INCLUDING AN OPTICAL SENSOR - An electrosurgical device and system including a blade operatively coupled to an energy source is disclosed herein. The electrosurgical device includes an optical sensor to monitor physical characteristics of the blade such that the device may automatically regulate the energy supplied to the blade and/or the operator may adjust several parameters including how the blade is removed and how much energy is supplied to the blade. A method of using the device and system is also disclosed. | 01-23-2014 |
20140025061 | RF ENERGY CONSOLE INCLUDING METHOD FOR VESSEL SEALING - A RF energy console controls RF energy output from a RF generator for sealing blood vessels. The energy console includes a processor that executes routines and a controller feedback circuit that, in combination, control the RF generator. Operation includes a heating stage outputting a RF ramping voltage and determining a decrease in measured current to less than a predetermined o of a maximum measured and stored current value to advance to a sealing stage. Then, the voltage is controlled to maintain an increasing change in impedance until a change in current value approaches a flat curve indicating seal completion, which stops the RF generator output. To reseal or enhance a blood vessel seal, the energy console executes the same routines as in the initial sealing operation. | 01-23-2014 |
20140025062 | TREATMENT PROCESS INDICATOR - Described is an apparatus for fractional RF skin treatment that includes an RF generator and an applicator. The apparatus also includes a display facilitating display of RF skin treatment process results. | 01-23-2014 |
20140025063 | ENERGY DELIVERY DEVICES AND METHODS - This relates to methods and devices for achieving contact between the wall of a cavity or passageway and a medical device when used in tortuous anatomy. | 01-23-2014 |
20140025064 | REAL-TIME ARC CONTROL IN ELECTROSURGICAL GENERATORS - An electrosurgical generator is disclosed. The generator includes a radio frequency output stage configured to generate a radio frequency waveform and a sensor circuit configured to measure a property of the radio frequency waveform during a predetermined sampling period to determine whether an arc event has occurred. The generator also includes a controller configured to determine a total charge and/or total energy deposited by the radio frequency waveform during the predetermined sampling period associated with the arc event. The controller is further configured to adjust the output of the electrosurgical generator based on at least one parameter to limit arcing. | 01-23-2014 |
20140025065 | SYSTEM AND METHOD OF AN ELECTROSURGICAL CONTROLLER WITH OUTPUT RF ENERGY CONTROL - An electrosurgical controller with output RF energy control. At least some of the illustrative embodiments are electrosurgical controllers configured to change a first output voltage on the first active terminal relative to the first return terminal by selective control of a number of turns of the primary winding of a transformer used to create the output voltage. | 01-23-2014 |
20140031808 | MEDICAL DEVICE TRACKING AND ENERGY FEEDBACK - Devices and methods of treating tissue defining a passageway in a body are disclosed. The devices may include an energy delivery system including an energy delivery device having an elongate member that includes an energy emitting portion at the distal portion of the elongate member. The energy emitting portion may be configured to transition between a first collapsed configuration and a second, expanded configuration. In addition, the methods may include positioning the energy delivery device in the passageway, moving the energy delivery device along the passageway in a substantially continuous manner. | 01-30-2014 |
20140031809 | GRASPING TREATMENT DEVICE - A jaw of the grasping treatment device includes an abutting portion being abutable on a probe treatment portion when the jaw is closed relative to the probe treatment portion, and a separated portion being disposed with a clearance between the separated portion and the probe treatment portion when the abutting portion is in abutment with the probe treatment portion. The jaw includes a distal-side wall portion provided to a distal direction side of the separated portion and protruding toward the probe treatment portion as compared with the separated portion, and a proximal-side wall portion provided to a proximal direction side of the separated portion and which protruding toward the probe treatment portion as compared with the separated portion. | 01-30-2014 |
20140031810 | Radiofrequency Probe for Circumferential Ablation of a Hollow Cavity - A probe for ablating tissue of a body cavity includes a shaft, an inflatable balloon connected to the shaft, and an electrode structure on or surrounding the balloon. The balloon expands within the body cavity to place the electrode structure in contact with the tissues in the body cavity. Additional electrodes, which are housed within the balloon during insertion into the cavity, can be extended outwardly from the balloon to penetrate the tissues in the body cavity. The electrode structure and the additional electrodes are adapted to transmit electrical energy to tissue of the body cavity in order to ablate the tissues up to a predetermined depth. | 01-30-2014 |
20140031811 | FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS - A microwave delivery device, including a coaxial feedline having an inner conductor, an inner dielectric insulator coaxially disposed about, the inner conductor, and an outer conductor coaxially disposed about, the inner dielectric, and a radiating portion operably coupled to a distal end. The radiating portion includes a radiating portion inner conductor operable coupled to and extending from a distal end of the coaxial feedline inner conductor, a shielding outer conductor helically wrapped about the radiating portion inner conductor and operably coupled to the coaxial feedline outer conductor; and a shielding dielectric positioned between the radiating portion inner conductor and the shielding outer conductor wherein the width of the shielding outer conductor varies according to the longitudinal position thereof along the coaxial feedline inner conductor, and a cap operably coupled to a distal end of the radiating portion inner conductor and the shielding outer conductor to provide an electrical connection therebetween. | 01-30-2014 |
20140031812 | FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS - A coupler for coupling a flexible coaxial cable, a fluid cooling system and the outer sheath of a catheter, the coupler including a fluid coupler body having a fluid inlet, a fluid outlet, a bypass bulb, an outer sheath, and a fluid sealing system housed in the fluid coupler body. The fluid sealing system includes a distal sealing diaphragm and a proximal sealing diaphragm configured to form a fluid-tight seal with the fluid coupler body. | 01-30-2014 |
20140039480 | BIPOLAR ENDOSCOPIC TISSUE ABLATOR WITH SIMPLE CONSTRUCTION - The present invention relates generally to the field of electrosurgery, more particularly to electrosurgical devices and methods that employ high frequency voltage to cut, ablate and/or coagulate tissue in conductive fluid and semi-dry environments, even more particularly to ablation electrodes designed for the bulk removal of tissue by vaporization as opposed to the simple cutting of tissue or coagulation of bleeding vessels. Further to a need in the art, the present invention provides bipolar ablators of simple construction. | 02-06-2014 |
20140039481 | ADJUSTABLE LENGTH AND/OR EXPOSURE ELECTRODES - An ablation system is provided. The ablation system includes an ablation device having a handle assembly and an electrode assembly. The handle assembly includes a housing configured for operable engagement by a user. The electrode assembly includes a tubular electrode having an open proximal end and a closed distal end. The tubular electrode is movable relative to the housing to adjust an insertable length of the electrode assembly. | 02-06-2014 |
20140039482 | Radio-Frequency Generator for Powering an Ablation Device - An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated. | 02-06-2014 |
20140039483 | Microwave Coagulation Applicator and System - A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A fluid circulation system provides a plurality of fluid supply connectors and fluid return connectors which can be connected and used with any number of applicators between one and the number of the fluid supply connectors provided by the system. A portion of the applicator inserted into the tissue can stick to the tissue to stabilize the applicator during treatment. A warning marking on the applicator can be used during track ablation to prevent ablation of the patient skin tissue. | 02-06-2014 |
20140039484 | Methods for creating a channel through an occlusion within a body vessel - A method is disclosed for creating a channel through an occlusion located in a vein that drains the central nervous system of a patient. The method utilizes a channel creating apparatus, including an energy delivery component operatively coupled to a distal end portion of the channel creating apparatus, to create a channel through the occlusion by delivering energy using the energy delivery component, in order to substantially increase blood flow through said vein to treat chronic cerebrospinal venous insufficiency (CCSVI). | 02-06-2014 |
20140039485 | FLOW RATE MONITOR FOR FLUID COOLED MICROWAVE ABLATION PROBE - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow. | 02-06-2014 |
20140039486 | ELECTROSURGICAL SYSTEM - An electrosurgical instrument includes an active electrode and an instrument return electrode, while the resectoscope also includes a resectoscope return electrode. The generator includes a source of radio frequency energy capable of producing either a coagulating RF waveform or a cutting RF waveform, and first, second and third output connections connected to the active electrode, the instrument return electrode, and the resectoscope return electrode respectively. The generator also includes a switching device, and a controller, the controller being such that when a cutting RF waveform is selected, the switching device directs the cutting RF waveform between the first and second output connections and hence the active electrode and the instrument return electrode. When a coagulating RF waveform is selected, the switching device directs the coagulating RF waveform between the first and third output connections and hence the active electrode and the resectoscope return electrode. | 02-06-2014 |
20140039487 | FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS - A flexible microwave catheter, including a flexible coaxial cable having an inner conductor, an inner dielectric coaxially disposed about the inner conductor, and an outer conductor coaxially disposed about the inner dielectric, at least one feedpoint defining a microwave radiating portion of the flexible coaxial cable, a mesh structure having a collapsed configuration and an expanded configuration and disposed about the microwave radiating portion of the flexible coaxial cable, wherein the mesh structure expands radially outward from the flexible microwave catheter thereby positioning the at least one feedpoint at the radial center of the mesh structure. | 02-06-2014 |
20140046314 | ELECTROMAGNETIC THERMOTHERAPY NEEDLE - An electromagnetic thermotherapy needle includes a needle body, a covering element, and a holding portion. The material of the needle body includes a magnetically susceptible material. The needle body is formed integrally as one piece and includes a front portion and a rear portion. The front portion has a tip end, and a radial width of the front portion is larger than that of the rear portion. The covering element covers the rear portion, and includes a magnetically non-susceptible material. The holding portion is connected with the covering element or the needle body. | 02-13-2014 |
20140046315 | MICROWAVE ABLATION CATHETER AND METHOD OF UTILIZING THE SAME - A microwave ablation catheter is provided. The microwave ablation catheter includes a coaxial cable connected at its proximal end to a microwave energy source and at its distal end to a distal radiating section. The coaxial cable includes inner and outer conductors and a dielectric positioned therebetween. The inner conductor extends distally past the outer conductor and is in sealed engagement with the distal radiating section. A balun is formed in part from a conductive material electrically connected to the outer conductor of the coaxial cable and extends along at least a portion of the coaxial cable. The conductive material has a braided configuration and is covered by at least one insulative material. | 02-13-2014 |
20140046316 | MICROWAVE ABLATION CATHETER AND METHOD OF UTILIZING THE SAME - A microwave ablation system configured for use in luminal network is provided. The microwave ablation system includes a microwave energy source and a tool for treating tissue. An extended working channel is configured to provide passage for the tool. A locatable guide, translatable through the extended working channel, is configured to navigate the extended working channel adjacent a target. | 02-13-2014 |
20140046317 | Moisture Transport System for Contact Electrocoagulation - An apparatus and method for use in performing ablation or coagulation of organs and other tissue includes a metallized fabric electrode array which is substantially absorbent and/or permeable to moisture and gases such as steam and conformable to the body cavity. Following placement of the ablation device into contact with the tissue to be ablated, an RF generator is used to deliver RF energy to the conductive regions and to thereby induce current flow from the electrodes to tissue to be ablated. As the current heats the tissue, moisture (such as steam or liquid) leaves the tissue causing the tissue to dehydrate. Suction may be applied to facilitate moisture removal. The moisture permeability and/or absorbency of the electrode carrying member allows the moisture to leave the ablation site so as to prevent the moisture from providing a path of conductivity for the current. | 02-13-2014 |
20140046318 | MICROWAVE ABLATION ANTENNA RADIATION DETECTOR - A radiation detector disposed on a microwave antenna assembly is disclosed. The radiation detector includes a receiving antenna adapted to receive errant microwave energy and a rectifier coupled to the receiving antenna that is adapted to rectify at least a portion of the errant microwave energy. A filter is coupled to the rectifier and is adapted to convert the rectified microwave energy into a detection signal. | 02-13-2014 |
20140046319 | METHODS OF TREATING A LUNG - A method for treating the lung during an acute episode of reversible chronic obstructive pulmonary disease such as an asthma attack. The method comprises transferring energy to an airway wall of an airway such that a diameter of the airway is increased. The energy may be transferred to the airway wall prior to, during or after an asthma attack. The energy may be transferred in an amount sufficient to temporarily or permanently increase the diameter of the airway. The method may be performed while the airway is open, closed or partially closed. | 02-13-2014 |
20140052119 | ELECTROPHYSIOLOGY CATHETER DESIGN - The present invention relates to a method, device, and system for improved mapping and/or ablation of a tissue. The device may generally include an elongate body and a distal assembly affixed to the elongate body that includes a treatment electrode having a conductive mapping region and a selectively conductive ablation region that is conductive of high-frequency current and substantially non-conductive of low-frequency current. Alternatively, the device may generally include a treatment electrode having a conductive mapping or ablation region and a region that is coated with an electrically insulated but thermally conductive layer. | 02-20-2014 |
20140052120 | ELECTROPHYSIOLOGY CATHETER DESIGN - A device and system for mapping and/or ablation wherein conductive portions of the electrodes and insulated portions of the electrode are composed of the same material. The system may generally include a medical device coupled to a console, the device including a distal assembly positionable at or near a target tissue region. The distal assembly may include one or more electrodes that include an integrated electrode head and electrode wire. The wire may be insulated by an oxidized layer. Alternatively, the distal assembly may include a plurality of protruding circumferential electrodes that are spaced apart by substantially insulated portions. The electrodes and insulated portions may be composed of the same material, with the insulated portions including an oxidized layer on an external surface. | 02-20-2014 |
20140052121 | MODULATION OF NERVES THAT INNERVATE THE LIVER - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 02-20-2014 |
20140052122 | HEPATIC NEUROMODULATION METHODS - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 02-20-2014 |
20140052123 | METHOD AND SYSTEM FOR VARYING OUTPUT INTENSITY OF ENERGY APPLIED TO AN ELECTROSURGICAL PROBE - An electrosurgical system is capable of selectively varying the power applied to an electrosurgical probe, without interruption or discontinuity, in a variable mode or providing a constant coagulation power value to the probe. In a fixed mode, power to the electrosurgical probe must be discontinued to change the power level output by the probe. A single controller is capable of operating the probe in the variable mode and the fixed mode. The controller includes an actuator for stopping the cutting operation and then switching to a constant coagulation output during either of the variable mode or the fixed mode. The controller of the system may selectively control a separate surgical tool. | 02-20-2014 |
20140052124 | SYSTEM AND METHOD FOR MONITORING ABLATION SIZE - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with memory associated with the power source. The memory includes one or more data look-up tables including one or more electrical parameter associated with the microwave antenna. The one or more electrical parameters corresponding to an ablation zone having a radius. The one or more electrical parameters include a threshold value, wherein when the threshold value is met the power source is adjusted to form an ablation zone of suitable proportion. | 02-20-2014 |
20140052125 | FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS - A method for implementing a microwave ablation waveguide, that includes selecting a lumen adapted to convey a fluid and formed from living biological tissue, introducing an elongate inner conductor into the lumen, positioning at least a portion of the elongate inner conductor within the lumen such that a longitudinal axis of the elongate inner conductor is positioned substantially parallel to and at a desired distance from a longitudinal axis of the lumen and proximate an anatomical feature of interest, and transferring microwave energy along the elongate inner conductor such that the lumen shields the inner conductor and allows a pre-determined amount of microwave energy to propagate through the anatomical feature of interest. | 02-20-2014 |
20140058373 | SYSTEM AND METHOD OF TREATING ABNORMAL TISSUE IN THE HUMAN ESOPHAGUS - An ablation catheter system and method of use is provided to endoscopically access portions of the human esophagus experiencing undesired growth of columnar epithelium. The ablation catheter system and method includes controlled depth of ablation features and use of either radio frequency spectrum, non-ionizing ultraviolet radiation, warm fluid or microwave radiation, which may also be accompanied by improved sensitizer agents. | 02-27-2014 |
20140058374 | MULTIPLE ELECTRODE RF ABLATION CATHETER AND METHOD - Disclosed herein, among other things, are methods and apparatus related to radio frequency (RF) ablation catheters. The present subject matter provides an ablation catheter system including an ablation catheter, multiple RF electrodes positioned along a distal end of a catheter, an electrical stimulation generator, and a control circuit electrically connected to the stimulation generator. According to various embodiments, the RF electrodes are each connected to the stimulation generator using a switch, and the control circuit is configured to distribute RF power from the stimulation generator to the RF electrodes using the switches to provide ablation therapy. | 02-27-2014 |
20140058375 | HIGH RESOLUTION MAP AND ABLATE CATHETER - A medical system includes a medical probe including an elongated member having a distal end, a metallic electrode mounted to the distal end of the elongated member, and a plurality of microelectrodes embedded within, and electrically insulated from, the metallic electrode. A radio frequency (RF) ablation source is configured to deliver RF ablation energy to the metallic electrode. A filter circuit is electrically connected to the microelectrodes such that the filter circuit receives electrical signals from the microelectrodes. The filter circuit is configured to filter signal components induced by the RF ablation energy from the electrical signals. A mapping processor electrically is coupled to the filter circuit and configured to receive and process the filtered electrical signals. | 02-27-2014 |
20140058376 | RENAL NERVE MODULATION DEVICES WITH WEEPING RF ABLATION BALLOONS - The disclosure pertains to an intravascular catheter, comprising an elongate member having a proximal end and a distal end, a balloon having an interior surface, an exterior surface, a lumen defined by the interior surface and a cylindrical wall extending between the interior surface and the exterior surface, the cylindrical wall having a proximal end and a distal end, the balloon having a plurality of weeping windows disposed in the wall and able to pass an electric current between the interior surface and the exterior surface and wherein the balloon wall is otherwise electrically insulative, and an electrode disposed in the balloon. The intravascular system is suited for modulation of renal nerves, for example. | 02-27-2014 |
20140058377 | METHODS AND APPARATUS FOR RENAL NEUROMODULATION - Methods and apparatus are provided for renal neuromodulation using a pulsed electric field to effectuate electroporation or electrofusion. It is expected that renal neuromodulation (e.g., denervation) may, among other things, reduce expansion of an acute myocardial infarction, reduce or prevent the onset of morphological changes that are affiliated with congestive heart failure, and/or be efficacious in the treatment of end stage renal disease. Embodiments of the present invention are configured for percutaneous intravascular delivery of pulsed electric fields to achieve such neuromodulation. | 02-27-2014 |
20140058378 | BIPOLAR ELECTRODE PROBE FOR ABLATION MONITORING - An electromagnetic surgical ablation system having a generator adapted to selectively provide surgical ablative energy to an ablation probe, and methods of operating same, are disclosed. The system includes a controller operatively coupled to the generator, and at least one tissue sensor probe operatively coupled to the controller. The at least one tissue sensor provides a tissue impedance measurement to the controller. A sensor probe may be designated a threshold probe adapted to sense when tissue is sufficiently ablated, or, a critical structure probe adapted to protect an adjacent anatomical structure from undesired ablation. During an electromagnetic tissue ablation procedure, the controller monitors tissue impedance to determine tissue status, to activate an indicator associated therewith, and, additionally or alternatively, to activate and deactivate the generator accordingly. | 02-27-2014 |
20140058379 | FLOW RATE MONITOR FOR FLUID COOLED MICROWAVE ABLATION PROBE - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow. | 02-27-2014 |
20140058380 | CATHETER WITH REMOTELY EXTENDIBLE INSTRUMENTS - A method for performing a surgical procedure within lungs of a patient. The method comprising the steps of providing a plurality of surgical instruments and providing a housing. Attaching a flexible, elongated shaft with distal and proximal ends to the housing. Engaging at least one working end to the distal end of the housing, the working end including a plurality of tubes disposed therein that define a corresponding plurality of working channels for housing a corresponding plurality of surgical instruments. Controlling an actuator to engage at least one of the corresponding plurality of surgical instruments, wherein rotation of the working end with respect to a longitudinal axis of the elongated shaft engages at least one of the plurality of surgical instrument with the actuator to deploy the at least one surgical instrument to the lung as needed during a surgical procedure. | 02-27-2014 |
20140058381 | VESSEL SEALING SYSTEM - An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. | 02-27-2014 |
20140058382 | ELECTROSURGICAL GENERATOR - An electrosurgical generator for generating radio frequency power, includes a radio frequency output stage having three or more output connections, and one or more sources of radio frequency output power coupled to the output stage. A controller causes the system to supply a first coagulating RF waveform to the output connections or a second cutting RF waveform to the output connections. The first RF waveform is delivered between a first pair of the output connections, and the second RF waveform is delivered between a second pair of the output connections. In a first mode of operation the controller supplies the first coagulating RF waveform, and in a second subsequent mode of operation the controller supplies the second cutting RF waveform for a first predetermined period of time followed by the first coagulating RF waveform for a second predetermined period of time, both periods being in excess of 1 second. | 02-27-2014 |
20140066915 | RENAL RF ABLATION SYSTEM WITH A MOVABLE VIRTUAL ELECTRODE AND RELATED METHODS OF USE - Tissue ablation devices and methods for using tissue ablation devices are disclosed. A tissue ablation device may include an elongate guide member having a distal section defined by a sidewall defining a lumen and having a plurality of openings. The distal section may have a helical shape in a released configuration. The tissue ablation device also may include an electrode having a distal end slideable within the distal section of the guide member. The electrode catheter may have an ablation element disposed thereon. | 03-06-2014 |
20140066916 | HEPATIC NEUROMODULATION DEVICES - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140066917 | COOL RF ELECTRODE - Systems and methods for ablating tissue in the living body can include a cool electrode. | 03-06-2014 |
20140066918 | APPARATUS FOR TRANSCUTANEOUSLY TREATING TISSUE - An apparatus for transcutaneously treating tissue beneath a skin surface using radiofrequency energy. The apparatus includes an electrode assembly supported by a handpiece. The electrode assembly includes an electrode configured to transfer the radiofrequency energy through the skin surface to the tissue. A force sensor, which is located in the handpiece, is configured to detect an amount of force applied by the electrode against the skin surface. | 03-06-2014 |
20140066919 | TREATMENT OF NON-ALCOHOLIC FATTY LIVER DISEASE - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140066920 | NERVE MODULATION TO TREAT DIABETES - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140066921 | BALLOON CATHETER NEUROMODULATION SYSTEMS - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140066922 | HEPATIC DENERVATION SYSTEMS - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140066923 | GASTRODUODENAL ARTERY NEUROMODULATION - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140066924 | NEUROMODULATION METHODS USING BALLOON CATHETER - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 03-06-2014 |
20140074083 | RENAL NERVE MODULATION BALLOON AND METHODS OF MAKING AND USING THE SAME - An expandable medical balloon for transmitting radiofrequency energy, the medical balloon comprising at least one polymeric electrically-insulating layer and at least one polymeric electrically-conductive layer, wherein at least portions of the polymeric electrically-insulating layer are moveable relative to the polymeric electrically-conductive in said at least one pressurizable expanded state. | 03-13-2014 |
20140074084 | VARIABLE-FREQUENCY STIMULATOR FOR ELECTROSURGERY - A variable-frequency stimulator for electrosurgery includes an impedance analyzer to identify the electrical impedance of biological tissue being treated by an electrosurgical instrument, such as a laparoscope. Based on the identified tissue impedance, a controller adjusts the frequency of electrical current delivered to the electrosurgical instrument to reduce, minimize or normalize the impedance of the tissue, thereby preventing collateral damage to the tissue in and about the surgical site. Additionally, the laparoscope may be configured with multiple electrically conductive grasping arms that are used to deliver the electrical current to the surgical site. The conductive grasping arms provide multiple current paths for the electrical current to flow, thus concentrating the electrical current at the surgical site during an electrosurgical procedure. Thus, the unwanted spread of electrical current in the tissue is prevented, resulting in the reduction or prevention of collateral damage to tissue in and about the surgical site. | 03-13-2014 |
20140081255 | Method and Apparatuses for Tissue Treatment - Disclosed in the present application are devices for localized delivery of energy and methods of using such devices, particularly for therapeutic treatment of biological tissues. The disclosed devices may contain one or more energy delivery members. The disclosed methods may involve positioning and deploying the energy delivery members in a target site, and delivering energy through the energy delivery members. | 03-20-2014 |
20140081256 | PORTABLE ELECTROSURGICAL INSTRUMENTS AND METHOD OF USING SAME - In contrast to instruments of the prior art that require bulky, cumbersome and/or costly electrical connections and energy sources, instruments designed in accordance with the instant disclosure are both portable and self-powered. The electrosurgical instruments of the present invention are not limited to a particular use or construction and can be adapted for operation with or without a patient return electrode (sometimes referred to as return pad or plate), in dry or wet fields, in the presence of bodily fluids (such as blood saliva and more), electrically conductive or non-conductive fluids. They may further be optionally equipped or configured for irrigation and or aspiration of liquids, gases or cryogenics, either external, remote or on-board. The electrode component of the electrosurgical instrument of the present invention may be monopolar, bipolar, or multipolar and may optionally include one or more floating electrodes. The electrosurgical instruments of the present invention may be single use (disposable) or multi-use (reusable) and can be compatible with various image-guiding systems, like fluoroscopic, ultrasound and others. | 03-20-2014 |
20140081257 | BLADDER DENERVATION FOR TREATING OVERACTIVE BLADDER - A device and method for transvaginal or transrectal treatment of a bladder pathology. The device includes an elongate body that includes a longitudinal axis, a handle at one end of the body, a head at the other end of the body, and a shaft between the handle and the head. The head includes a substantially flat surface and one or more retractable needle electrodes extending through the flat surface. The method includes inserting a probe into a vagina or rectum of a patient, where the probe includes a head portion comprising one or more retractable needle electrodes; heating one or more pelvic nerves supplying the patient's bladder by emitting radiofrequency energy from the one or more needle electrodes; and as a result of the heating, damaging the one or more pelvic nerves. | 03-20-2014 |
20140081258 | Template system and methods - Template systems and methods for various procedures (e.g., tissue ablation procedures) are disclosed. An exemplary template system comprises a track having at least one suction port. The at least one suction port anchors the track to a tissue after the track is positioned adjacent a target area. The template system may further comprise a transducer operatively associated with the track. Exemplary transducers include imaging transducers and ablating transducers. The transducer is guided by the track adjacent the target area while the transducer is moved along the track for a procedure. One or more umbilical may provide a conduit to the track and/or transducer so that the template system may be positioned in a patient's body (e.g., for a procedure on the patient's heart) and operated remotely by a physician or other user from outside of the patient's body. | 03-20-2014 |
20140081259 | METHODS AND APPARATUS FOR RENAL NEUROMODULATION - Methods and apparatus are provided for renal neuromodulation using a pulsed electric field to effectuate electroporation or electrofusion. It is expected that renal neuromodulation (e.g., denervation) may, among other things, reduce expansion of an acute myocardial infarction, reduce or prevent the onset of morphological changes that are affiliated with congestive heart failure, and/or be efficacious in the treatment of end stage renal disease. Embodiments of the present invention are configured for percutaneous intravascular delivery of pulsed electric fields to achieve such neuromodulation. | 03-20-2014 |
20140088582 | COAPTIVE SURGICAL SEALING TOOL - A coaptive surgical sealing tool may be similar to an ordinary hemostat with long (50, 60, 70 or 80 mm) thin jaws for sliding into the liver parenchyma, without tearing the larger blood vessels. The jaws are spring loaded and are designed for uniform compression, and to avoid closing too quickly. The jaws are capable of sealing a 50, 60, 70 or 80 mm sealing length, in a single bite, although it can also seal shorter lengths as well. The tool can be used with existing RF/bi-polar cautery generators. | 03-27-2014 |
20140088583 | COAPTIVE SURGICAL SEALING TOOL - A coaptive surgical sealing tool may be similar to an ordinary hemostat with long (50, 60, 70 or 80 mm) thin jaws for sliding into the liver parenchyma, without tearing the larger blood vessels. The jaws are spring loaded and are designed for uniform compression, and to avoid closing too quickly. The jaws are capable of sealing a 50, 60, 70 or 80 mm sealing length, in a single bite, although it can also seal shorter lengths as well. The tool can be used with existing RF/bi-polar cautery generators. The tool may be provided with irrigation and/or suction. | 03-27-2014 |
20140088584 | MEDICAL DEVICE BALLOON CATHETER - An intravascular catheter for tissue modulation, comprising an elongate member having a proximal end and a distal end, a balloon disposed on the elongate member and having an interior surface, an exterior surface, a lumen defined by the interior surface and at least a first region for transmitting therapeutic energy from the exterior surface of the balloon, wherein the elongate member has a fluid supply lumen having a plurality of ports fluidly connected to the balloon lumen and a fluid evacuation lumen having a port fluidly connected to the balloon lumen. | 03-27-2014 |
20140088585 | CATHETER HAVING RIB AND SPINE STRUCTURE SUPPORTING MULTIPLE ELECTRODES FOR RENAL NERVE ABLATION - A catheter for ablating target tissue from a location within a body vessel includes an ablation region that is configured to transition from a first substantially straight configuration to a second configuration having a two-dimensional or three-dimensional shape. The ablation region may include a plurality of ablation elements that may be distributed along a length of the ablation region such that when the ablation region is in the second configuration, the ablation elements may be placed in closer proximity to the target tissue. Additionally, when the ablation region is in the second configuration, the ablation elements may achieve circumferential coverage of the body lumen or blood vessel, and as such, may be capable of ablating the target tissue at multiple locations along the length and around a circumference of the body lumen or vessel in a single step. | 03-27-2014 |
20140088586 | RENAL NERVE MODULATION DEVICES - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a renal nerve modulation device. The renal nerve modulation device may include an elongate shaft. A balloon may be coupled to the shaft. The balloon may have a hydrophilic electrode region. A flexible electrode may be coupled to the shaft and may be disposed within the balloon. The flexible electrode may have a plurality of openings formed therein. | 03-27-2014 |
20140088587 | MEDIAN LOBE DESTRUCTION APPARATUS AND METHOD - A system and associated method for altering or destroying tissues and anatomical or other structures in medical applications for the purpose of treating diseases or disorders. In one aspect, the system includes a device configured to deploy devices for altering the lobes of a prostate. | 03-27-2014 |
20140094787 | FLEXIBLE RENAL NERVE MODULATION DEVICE - Renal nerve modulation devices and methods for making and using renal nerve ablation devices are disclosed. An example renal nerve modulation device may include elongate catheter shaft having a distal portion. One or more tubular shafts may be disposed within the catheter shaft. Each of the tubular shafts may include a proximal portion, a distal portion, and a lumen extending therebetween. Each of the tubular shafts may also include a slotted portion having a plurality of slots formed therein. The slots may define a preferential zone of bending in a predetermined direction. Each of the tubular shafts may also an actuation member that is configured to shift the tubular shaft between a first configuration and a bent configuration. An ablation member may be coupled to the distal portion. | 04-03-2014 |
20140094788 | THERMAL ABLATION PROBE FOR A MEDICAL DEVICE - A thermal ablation probe is described having one or more sensors for sensing at least one tissue parameter, such as temperature, fluctuation in temperature change, and/or rate of temperature change. The thermal ablation probe includes an elongated shaft and a head portion at a distal end of the elongated shaft. The head portion includes a sensing system having the one or more sensors for sensing the at least one tissue parameter. The head portion further includes one or more antennas configured to apply energy to tissue. The proximal end of the thermal ablation probe is configured for removable engagement with a thermal ablation system. The one or more sensors of the sensing system form at least one thermal ablation probe array or sensing platform. The thermal ablation probe array(s) can be in operative communication with a control system of the thermal ablation system for controlling the operation of the thermal ablation system in accordance with the at least one tissue parameter. | 04-03-2014 |
20140094789 | DEVICES AND METHODS FOR OPTICAL DETECTION OF TISSUE CONTACT - An electrosurgical system includes an energy applicator adapted to direct energy to tissue, an electrosurgical power generating source, and a surface-contact detection device. The surface-contact detection device is operably associated with the energy applicator. The surface-contact detection device is communicatively-coupled to the electrosurgical power generating source. The surface-contact detection device includes at least one optical transmitter to generate optical signals, a lens member configured to reflect optical signals generated by the optical transmitter when the lens member is disposed in contact with tissue, and at least one optical receiver to receive optical signals reflected by the lens member. The electrosurgical power generating source is adapted to transmit energy to the energy applicator when it is determined that the lens member is disposed in contact with tissue. | 04-03-2014 |
20140094790 | ELECTROSURGICAL INSTRUMENT - A surgical instrument includes an elongated shaft, with components arranged in the shaft. The elongated shaft is slightly curved. Arranged on a proximal end of the surgical instrument is an actuation device in the form of a lever mechanism and rotary knob. A force transmission element in the form of a plastic hollow section is arranged in the shaft. The force transmission element is a plastic section designed for transmitting compressive and tensile forces. The plastic section is provided with a plurality of longitudinally extending channels. Therefore, the plastic section does not only serve as a force transmission element, but electric lines and a pull-push shaft may additionally extend in the channels. The longitudinal channels may be used for supplying cooling media for the electrodes or the thermo-fusion device or for feeding agents promoting wound repair. The plastic section is electrically insulating, so that the risk of short-circuits is reduced. | 04-03-2014 |
20140094791 | SYSTEMS AND METHODS FOR CREATING ARTERIOVENOUS (AV) FISTULAS - A system for creating an arteriovenous (AV) fistula comprises a vessel access sheath having a hollow interior and an exit port, a side access needle catheter configured to fit within the hollow interior of the sheath, a needle configured to be inserted into a blood vessel through the side access needle catheter, a toggle delivery catheter configured to fit within the hollow interior of the sheath, and a toggle apparatus configured to be delivered into a vessel through the toggle delivery catheter. The toggle apparatus comprises a shaft and a toggle member pivotably attached to a distal end of the shaft. A source of RF energy or resistive heat energy may be provided for application to the toggle member and/or to a heater insert in the toggle delivery catheter, for the purpose of creating the fistula. | 04-03-2014 |
20140100557 | ELECTROSURGICAL DEVICE FOR CUTTING AND REMOVING TISSUE - Electrosurgical devices including a shaft, a handle and a distal end portion. The distal end portion is formed of an electrically conductive material and includes an electrically insulating material covering a substantial portion of the distal end portion and leaving an exposed portion which acts as an active electrode for delivery of electrical energy to tissue. A conduit in the shaft extending to an opening in the distal end portion facilitates aspiration of tissue and may provide suction simultaneous with delivery of electrical energy. Systems include an electrosurgical device, a source of electrical energy and may optionally include a source of suction and/or a source of fluid delivery or irrigation. | 04-10-2014 |
20140100558 | MICRO-ARTICULATED SURGICAL INSTRUMENTS USING MICRO GEAR ACTUATION - A medical device for removing or manipulating tissue of a subject is provided with a distal housing having an end effector, and an elongate member configured to introduce the distal housing to a target tissue site of the subject. The elongate member may have proximal and distal portions interconnected by a joint mechanism that is configured to allow the two portions to articulate relative to one another. In some embodiments, the joint mechanism includes one or more nested crown gear(s) configured to drive associated spur gear(s) to accomplish the articulation. In some embodiments, the end effector is a powered scissors device. | 04-10-2014 |
20140100559 | VESSEL SEALING SYSTEM - An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. | 04-10-2014 |
20140100560 | Fenestration through foreign material - Described herein is a method for creating a channel through a foreign material located in a body of a patient. The foreign material defines a material first surface and a substantially opposed material second surface and the channel extends through the foreign material between the material first and second surfaces. The method uses an apparatus including an electrode, and includes the steps of: positioning the electrode substantially adjacent to the material first surface; energizing the electrode with a radiofrequency current; and using the electrode energized with the radiofrequency current to deliver energy into the foreign material to create the channel. In some embodiments, the patient's body includes a heart defining a septum, the septum defines an aperture extending there-through and the foreign material extends across the aperture to cover the aperture. | 04-10-2014 |
20140100561 | Fenestration through foreign material - Described herein is a method for creating a channel through a foreign material located in a septum of a heart at the site of a septal defect. The foreign material defines a material first surface and a substantially opposed material second surface, and the channel extends through the foreign material at least partially between the material first and second surfaces. The method uses an apparatus including an electrode and includes the steps of: positioning the electrode substantially adjacent to the material first surface; energizing the electrode with a radiofrequency current; and using the electrode energized with the radiofrequency current to deliver energy into the foreign material to create the channel. | 04-10-2014 |
20140107638 | APPARATUS FOR TREATING TISSUE WITH MICROWAVE RADIATION AND ANTENNA CALIBRATION SYSTEM AND METHOD - A calibration method and apparatus for surgical antennas arranged to deliver microwave radiation into biological tissue. An emitting region of the antenna is exposed to a plurality of calibration standards having different complex impedances at the treatment frequency. Calibration standards are created in a short-circuit-terminated waveguide cavity of variable length. In another variation, each calibration standard is a different mixture of liquids. Measurement of the magnitude and phase of signals reflected from the emitting region when exposed to the calibration standard permits calibration of the antenna; Also disclosed is a tissue treatment apparatus having an ablation channel for conveying microwave radiation to a surgical antenna at a high power level, with a separate measurement channel for conveying radiation at a low power level. A surgical antenna having an impedance transformer for matching a coaxial feed structure that terminates in radiating elements with tissue to be treated is also disclosed. | 04-17-2014 |
20140107639 | RENAL DENERVATION SYSTEM AND METHOD - A method for denervation comprises introducing a distal portion of a catheter through an interior of a vessel of a patient to a location at or proximate one of a renal pelvis or a calyx. The catheter includes an elongated catheter body extending longitudinally between a proximal end and a distal end. The catheter body includes the distal portion at the distal end and a catheter lumen from the proximal end to the distal end. Energy is delivered from the distal portion to cause renal denervation, for example, by denervating at least some tissue proximate at least one of the renal pelvis or a renal vessel from a location at or proximate the renal pelvis or the calyx from a location at or proximate the calyx. | 04-17-2014 |
20140107640 | MOTORIZED SURGICAL CUTTING AND FASTENING INSTRUMENT - A surgical cutting and fastening instrument comprises an end effector, a shaft connected to the end effector, and a handle connected to the shaft. The handle comprises an electric, DC motor connected to a drive train for powering the drive train and a plurality of series-connected DC power source connected to the motor for supplying electrical power to the motor. The handle also comprises a power source selection switch for connecting, when in a first state, all of the DC power sources to the motor, and, when in a second state, a subset of the DC power sources to the motor. Also disclosed are means for actuating a RF electrode in the end effector and means for indicating actuation of the RF electrode. | 04-17-2014 |
20140114300 | MEDICAL SYSTEMS AND METHODS - Tissue is resected and extracted from an interior location in a patient's body using a probe or tool which both effects resection and causes vaporization of a liquid or other fluid to propel the resected tissue through an extraction lumen of the resecting device. Resection is achieved using an electrosurgical electrode assembly including a first electrode on a resecting member and a second electrode within a resection probe or tool. Over a first resecting portion, radio frequency current helps resect the tissue and over a second or over transition region, the RF current initiates vaporization of the fluid or other liquid to propel the tissue from the resection device. In one embodiment, an extending element extends from a housing and into a channel in a resecting member as the resecting member moves toward a distal position. | 04-24-2014 |
20140114301 | Hair Removal and Re-Growth Suppression Apparatus - A hair removal and re-growth suppression apparatus ( | 04-24-2014 |
20140114302 | TUNABLE MICROWAVE ABLATION PROBE - An electromagnetic surgical ablation probe having a tunable helical antenna element is disclosed. The probe includes a coaxial feedline having an inner conductor coaxially disposed within a dielectric, and an outer conductor coaxially disposed around the dielectric. The inner conductor and dielectric extend distally beyond a distal end of the outer conductor. A helical antenna element is operably coupled to a distal end of the inner conductor. During use, the antenna may be tuned by changing at least one dimension of the helical antenna element. Embodiments are presented wherein a dimensions of the helical antenna element is changed by state change of a shape memory alloy, by a change in temperature, by activation of a piston by fluidic pressure, by linear motion of a conical tip, and by a manual screw-type adjustment. | 04-24-2014 |
20140114303 | CURRENT-FED PUSH-PULL CONVERTER WITH PASSIVE VOLTAGE CLAMP - An electrosurgical generator configured to output radio frequency (RF) energy having a current-source type behavior is provided. The generator has a buck converter having a voltage source, at least one switch and an inductor. The generator also has an RF stage configured to output the RF energy. A sensor circuit configured to measure at least one parameter of the RF energy and a controller configured to receive the measured parameter from the sensor circuit and control the output of the electrosurgical generator based on the measured parameter may also be provided in the electrosurgical generator. | 04-24-2014 |
20140121656 | NERVE AND SOFT TISSUE CUTTING DEVICE - Cutting devices including a probe or needle useful for resecting nerve and soft tissue via a minimally invasive procedure to alleviate pain are provided. The cutting devices include an internal passage and a distal end that can have a tip and a groove positioned near the tip or at the tip at the distal end of the probe. The probe or needle can have an electrically insulated layer or coating adjacent to and exposing the groove which is configured to receive pulsed plasma mediated radio frequency discharges adapted for cutting nerve and/or soft tissue. The internal passage of the probe or needle can be configured to engage a vacuum for suction of the cut nerve and/or tissue, or separate passage for injection of fluids, sealants or cements. Methods for cutting nerve and/or soft tissue utilizing the cutting devices are also provided. | 05-01-2014 |
20140121657 | IRRRIGATED ABLATION CATHETER WITH DEFORMABLE HEAD - A medical probe, including a flexible insertion tube having a deformable distal end for insertion into a body cavity of a patient, the deformable distal end including a flexible and porous material configured to be brought into contact with tissue in the body cavity. The medical probe also includes a means for inflating the deformable distal end, and a channel contained within the insertion tube and configured to convey a fluid generating a mechanical force sufficient to inflate the deformable distal end and that irrigates the tissue through pores of the deformable distal end. The medical probe further includes an electrical conductor passing through the flexible insertion tube and terminating in the deformable distal end and configured to convey radio frequency (RF) energy to the tissue via the deformable distal end. | 05-01-2014 |
20140121658 | Cool RF Electrode - Systems and methods for ablating tissue in the living body can include a cool electrode. | 05-01-2014 |
20140128859 | FLEX CIRCUIT/BALLOON ASSEMBLIES UTILIZING TEXTURED SURFACES FOR ENHANCED BONDING - Systems, methods and devices for remodeling a tissue of or adjacent to a body passageway may include or utilize a catheter having an expandable balloon with a plurality of flexible circuits. In some instances, laser texturing may be utilized to facilitate enhanced bonding of the flexible circuits to the expandable balloon. | 05-08-2014 |
20140128860 | BIPOLAR NEEDLE TYPE MICROWAVE OPERATION DEVICE - The present invention provides a bipolar needle type microwave operation device, wherein at least one pair of rod-like electrodes are parallel to a center axis of the electrodes in their entirety, an insulator being filled between the paired electrodes. Preferably, at least two pairs of electrodes are alternate so that the electrodes having the same polarity are not adjacent to each other, and the ends of the paired electrodes having the same polarity are bridged with the same material as the electrodes. Preferably, a perpendicular distance between each of the electrodes and the center axis is within 2 mm. | 05-08-2014 |
20140128861 | ELECTROSURGICAL TISSUE TREATMENT DEVICE - A device for treating spinal tissue of a patient's body may include an energy source and first and second probe assemblies. Each of the probe assemblies may have an electrically conductive energy delivery device electrically coupled to the energy source, and may also have an electrothermal device for cooling the probe assembly. The device is configured so that the energy source delivers energy to the spinal tissue through the energy delivery devices in a bipolar mode that concentrates delivered energy between the energy delivery devices to create a lesion within the spinal tissue while the electrothermal devices cool the probe assemblies. Related methods of use include cooling, at times via an electrothermal device. | 05-08-2014 |
20140128862 | ENERGY DELIVERY CONDUITS FOR USE WITH ELECTROSURGICAL DEVICES - A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly. | 05-08-2014 |
20140135755 | RENAL CATHETER SHAFT DESIGN - A medical device for ablation of a target tissue is disclosed. The medical device includes a catheter assembly attached to a balloon for the ablation of the target tissue. The catheter assembly includes a proximal end and a distal end. The catheter assembly includes a plurality of individual shafts placed concentrically or adjacent to each other. Further, the plurality of individual shafts includes a respective lumen, wherein the lumens of the plurality of individual shafts can be configured to supply radio frequency (RF) energy to an RF transmitter placed inside the balloon and also to serve as the passageway for a fluid to travel within the balloon. The fluid flowing within the lumens of the catheter assembly can further help in expanding the balloon and transferring energy from the RF transmitter within the balloon to the ablation site via a plurality of windows attached. | 05-15-2014 |
20140135756 | ENDOSCOPIC FORCEPS - An endoscopic forceps is provided. A movable blade electrode and a fixed blade electrode form a pair of electrodes. The fixed blade electrode is electrically contacted onto an external electric conductor of a coaxial cable in the sheath conduit. A force application point of the movable blade electrode is connected to a center electric conductor of the coaxial cable. A pivot point of the movable blade electrode is provided on the movable blade electrode. The coaxial cable is slid with respect to the sheath conduit so that parallel moving added to the coaxial cable is transmitted to the movable blade electrode as turnable moving about the pivot point via the force application point of the movable blade electrode. A high frequency wave can be applied between the movable blade electrode and the fixed blade electrode via the external electric conductor and the center electric conductor of the coaxial cable. | 05-15-2014 |
20140135757 | ELECTROSURGICAL INSTRUMENT AND ELECTROSURGICAL CONDUCTIVE ELECTRODE FOR USE WITH THE INSTRUMENT - An elongated electrosurgical instrument ( | 05-15-2014 |
20140142563 | ENERGY APPLICATION PLANNING APPARATUS - The invention relates to an energy application planning apparatus for planning an application of energy to an object ( | 05-22-2014 |
20140142564 | ABLATION THERAPY SYSTEM AND METHOD FOR TREATING CONTINUOUS ATRIAL FIBRILLATION - An ablation therapy system and systematic method is provided for treating continuous atrial fibrillation. The therapy system includes a Multi-Channel RF Ablation Generator, an ECG interface, an assembly of at least three ablation catheters, and an ECG interface operably coupling and interfacing the catheters to both an ECG unit and the RF Ablation Generator. The systematic method includes transseptally accessing the Left Atrium (LA) through the septum of the patient's heart, and performing an endocardial pulmonary vein ablation procedure on the pulmonary vein ostial tissue surrounding one or more pulmonary veins in a manner treating aberrant conductive pathways therethrough. After performing the pulmonary vein ablation, the method further includes performing an endocardial atrial septum ablation procedure on the septal tissue in a manner treating aberrant conductive pathways therethrough. | 05-22-2014 |
20140142565 | MAGNETICALLY COUPLING DEVICES FOR MAPPING AND/OR ABLATING - Systems for ablating tissue can include a pair of electrode assemblies. The electrode assemblies can automatically align on opposing sides of operative tissue due to magnetic interaction. One assembly can move automatically in response to the other assembly due to the magnetic interaction. Some systems are capable of cooling the electrode assemblies during ablation procedures. | 05-22-2014 |
20140148798 | APPARATUS AND METHODS TO MODULATE BLADDER FUNCTION - Apparatus and methods to modulate bladder function are provided. An energy delivery apparatus can include an elongated shaft, a distal region coupled to the elongated shaft, and an energy delivery element configured to deliver energy to non-superficial target tissue within a trigone region of a bladder wall of a human bladder to modulate bladder function. | 05-29-2014 |
20140148799 | SURGICAL INSTRUMENTS - A surgical instrument includes a housing having a shaft extending therefrom. An end effector is operably supported at the distal end of the shaft includes a pair of jaw members. A generator operably coupled to the housing is in operable communication with a battery assembly of the surgical instrument to convert electrical energy into at least one of RF and ultrasonic energy to energize the at least one activatable jaw member. A thermally-activatable device in operable communication with either the generator or the battery assembly is configured to promote air-flow around the generator and battery assembly. | 05-29-2014 |
20140148800 | Thermal Induced Necrosis of Lens Epithelial Cells - Lens epithelial cells are destroyed and further growth is inhibited coincidental with eye surgery such as cataract surgery by heating the cells to a temperature above normal to thereby destroy the cells and inhibit future growth. The cells are heated by placement of a thermally conductive ring within the lens capsule and heating the ring thereby raising the temperature of lens epithelial cells adjacent to the ring. | 05-29-2014 |
20140148801 | SURGICAL DEVICE - A surgical device includes a longitudinal first leg having a first distal tip portion pivotably coupled to a longitudinal second leg having a second distal tip portion. The first and second legs are transitionable between a first position such that the first and second tip portions are spaced apart from each other and a second position where the first and second tip portions are proximate each other. The first tip portion includes a concave face and the second tip portion includes a convex face configured such that the first and second faces oppose each other in the first and second positions and touch each other in the second position. The convex face fits within the concave face in the second position. | 05-29-2014 |
20140148802 | Radio Frequency Procedure Protection - A method and apparatus is provided for protecting a patient during a radio frequency medical procedure. A detector includes an input receiving electrical impulses representing at least one patient parameter to be monitored from at least one shielded sensor connected to the patient. The detector detects at least one of (a) a voltage associated with parasitic current generated during a radio frequency medical procedure and (b) a current generated during a radio frequency medical procedure. A control circuit is coupled to the detector and compares at least one of (a) the detected voltage with a threshold voltage value and (b) the detected current with a threshold current value. A switch is coupled between the detector and the control circuit. In response to a control signal generated by the control circuit, the switch selectively switches between a conductive state and a non conductive state. The conductive state maintains a low impedance at the at least one shielded sensor and maintains the shield of the at least one shielded sensor in an effective state when at least one of (a) the detected voltage is below the threshold voltage value and (b) the detected current is below the threshold current value. The non-conductive state provides a high impedance at the at least one shielded sensor and causes the shield of the at least one shielded sensor to become ineffective when at least one of (a) the detected voltage is equal to or greater than the threshold voltage value and (b) the detected current is equal to or greater than the threshold current. | 05-29-2014 |
20140155878 | SURGICAL INSTRUMENT WITH CURVED BLADE FIRING PATH - An apparatus includes an end effector having a first jaw and a second jaw. The first and second jaws are able to clamp tissue. The first jaw and the second jaw define a curved path. The apparatus further includes a blade that is operable to translate along a curved path in the end effector. At least a portion of the blade is precurved. The blade may further include a laminate of sheets that slide relative to each other to accommodate travel along the curved path. | 06-05-2014 |
20140155879 | METHODS AND APPARATUS FOR INTRODUCING TUMESCENT FLUID TO BODY TISSUE - A catheter is usable to treat a hollow anatomical structure (HAS). The catheter comprises one or more shafts which extend away from a proximal end of the catheter toward a distal end thereof. The catheter further comprises an HAS constriction energy source located at or near the distal end of the catheter. The catheter further comprises at least one radially expandable transmural fluid delivery channel located in the catheter near the HAS constriction energy source. | 06-05-2014 |
20140155880 | METHOD AND SYSTEM FOR ADJUSTING SOURCE IMPEDANCE AND MAXIMIZING OUTPUT BY RF GENERATOR - An electrosurgical system includes an electrosurgical probe connected to a control console, wherein the probe is capable of coagulating and ablating tissue depending on a selected operating mode. Before operating the system, probe-specific data stored in a memory device associated with the probe is read by a processing device in the console. The data includes source impedance values specific to a coagulation or cutting mode of operation. A constant duty cycle value for a modulated cutting mode also is provided. Depending on the operating mode selected, an RF generator adjusted to have a predetermined source impedance value provides a voltage value to the probe. During the duty-cycled mode, the RF generator generates an instantaneous voltage value output for a duty cycle portion that is less than 100% of a time period, which value is no less than a maximum continuous average voltage value for the electrosurgical probe. | 06-05-2014 |
20140155881 | HIGH-STRENGTH MICROWAVE ANTENNA ASSEMBLIES - Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna. | 06-05-2014 |
20140163541 | BIPOLAR ELECTROSURGICAL FEATURES FOR TARGETED HEMOSTASIS - An apparatus is configured to operate on tissue. The apparatus includes an end effector with an upper jaw and a lower jaw. The upper jaw is configured to pivot relative to the lower jaw. The apparatus also includes an electrode cap coupled to either the upper or lower jaw. The electrode cap includes a first electrode surface configured at a first polarity and a second electrode surface configured at a second polarity. The second polarity is opposite to the first polarity. The electrode cap is configured to be applied to tissue such that the electrode cap is operable to deliver bipolar RF energy to the tissue. The electrode cap may be used to selectively weld bleeding tissue in a localized fashion, without having to place the tissue between the jaws, and without having to use an instrument separate from the jaws. | 06-12-2014 |
20140163542 | SYSTEM AND PROCEDURE FOR ENHANCING OCULAR DRAINAGE - Various systems, apparatuses, and processes may be used for enhancing ocular drainage. In particular implementations, a system for ocular drainage may include an ocular interface that includes a base and a number of diathermy needles. The diathermy needles may extend from the base a distance sufficient to penetrate a sclera of an eye and provide radio frequency energy to a trabecular meshwork. | 06-12-2014 |
20140163543 | APPARATUS AND METHOD FOR DELIVERY AND MONITORING OF ABLATION THERAPY - Methods are provided for monitoring and controlling tissue ablation using RF energy delivered by an imaging ablation catheter under direct visualization, using the control and modulation of a set of ablation parameters based on direct optical imaging of the tissue surface via the imaging ablation catheter, where a set of optical image-derived parameters modulates the setting of a subset of Radio Frequency dosing parameters. The ablation dosing algorithms based on image-derived information can be implemented manually or in semi-automated or automated forms. | 06-12-2014 |
20140163544 | ANTI-SEEDING ARRANGEMENT - The present invention relates to an anti-seeding arrangement ( | 06-12-2014 |
20140163545 | SYSTEM AND METHOD FOR CHEMICALLY COOLING AN ABLATION ANTENNA - A method of performing an ablation procedure includes the steps of inserting an antenna assembly into tissue and supplying energy thereto for application to tissue. The method also includes the step of causing contact between a first material and at least one other material disposed within the antenna assembly to thermally regulate the antenna assembly. According to another embodiment, an ablation system includes an energy delivery assembly. A first chamber is defined within the energy delivery assembly and is configured to hold a first chemical. Another chamber is defined within the energy delivery assembly and is configured to hold at least one other chemical. The first chamber and the other chamber are configured to selectively and fluidly communicate with each other to cause contact between the first chemical and the at least one other chemical to cause an endothermic reaction and/or an exothermic reaction. | 06-12-2014 |
20140171931 | CONTROLLER FOR ELECTROSURGICAL MEDICAL DEVICES - A control unit controls delivery of RF energy generated by an RF generator to a medical device configured to perform a medical procedure. The control unit may be separate from the RF generator, and may have an input that may be attached to an output of the RF generator. The control unit includes switching circuitry that is closed while an amount of RF energy is transmitted through the control unit to the medical device. The switching circuitry opens when the amount of RF energy reaches a threshold level. | 06-19-2014 |
20140171932 | ABLATION PROBE WITH TISSUE SENSING CONFIGURATION - An ablation probe is provided. The ablation probe includes a housing that is configured to couple to a microwave energy source. A shaft extends distally from the housing and includes a radiating section at a distal end thereof. A sensor assembly is operably disposed on the housing and includes a pair of sensor contacts. One or more sensors are positioned adjacent the radiating section and extend along the shaft. The sensor(s) have a pair of sensor contact pads that are positioned on the shaft for contact with the pair of sensors such that during transmission of microwave from the radiating section into target tissue at least one electrical parameter is induced into the at least one sensor and detected by the pair of sensor contacts. | 06-19-2014 |
20140171933 | RESONATING RADIO FREQUENCY ABLATION DEVICE - The invention relates to methods, systems, and devices for ablating a tumor with heat delivered from a non-ferrous metallic rod having a length adapted to support resonating radio frequency waves along the longitudinal axis of the rod. The tumor ablation may be carried out in an MRI where the radio frequency transmitter of the MRI wirelessly delivers the energy to heat the metallic rod. | 06-19-2014 |
20140171934 | DISPOSABLE ELECTROMAGNETIC ENERGY APPLICATOR - A skin treatment apparatus that includes, a disposable electrode carrier with a plurality of voltage-applying dome-shaped elements protruding from the surface of the electrode carrier. Further, the protruding elements are spaced apart in a pattern. The apparatus operates to apply a voltage to at least some of the protruding elements. The apparatus applies a voltage to the protruding elements with a magnitude that is sufficient to result in an electrical break down of the skin and thereby cause electric current enabling the desired treatment. | 06-19-2014 |
20140180267 | AUTOMATED, SELECTABLE, SOFT TISSUE EXCISION BIOPSY DEVICES AND METHODS - An excisional biopsy and delivery device may comprise one or more rotating, penetrating and cutting rod elements. The rod elements may be configured to advance from a stored and confined first position and rotate about an axis, while being simultaneously revolved about a central axis. The rod elements may then assume a second released and expanded configuration that is operative to cut around and surround target tissue. In this manner, the rod elements are operative to move through the surrounding tissue to create a volume of revolution and to sever and capture the target tissue contained within the volume of revolution from the surrounding tissue. The severed and captured volume of revolution containing the target issue may then be removed. | 06-26-2014 |
20140180268 | SYSTEM AND METHOD FOR CATHETER STEERING AND OPERATION - The invention generally relates to intravascular intervention catheters and provides catheters for performing an intravascular procedure that use a computer to control an operation at the end of the catheter. The computer can process image data to determine where the important features are within a patient's vessels. The catheter can include imaging devices, steering devices, ablation mechanisms, or a combination thereof. By referencing the precisely-calculated location of the important features, the computer can provides signals that can be used by a control device (such as a set of servomotors for navigation) to operate the mechanisms at the catheter tip. Thus the catheter can be steered or an ablation mechanism can be operated or be prevented from operating depending on a detected location of the catheter. | 06-26-2014 |
20140180269 | MICROWAVE ANTENNA HAVING A REACTIVELY-LOADED LOOP CONFIGURATION - A microwave ablation system is provided. The microwave ablation system includes a power source. A microwave antenna is adapted to connect to the power source via a coaxial cable feed including an inner conductor defining a portion of a radiating section of the microwave antenna, an outer conductor and dielectric shielding. The inner conductor loops back around and toward the outer conductor of the coaxial cable feed such that a distal end of the inner conductor is operably disposed adjacent the dielectric shielding. The inner conductor includes one or more reactive components disposed thereon forming a reactively-loaded loop configuration configured to maximize delivery of microwave energy from the power source to tissue such that a desired effect to tissue is achieved. | 06-26-2014 |
20140180270 | LEAKY-WAVE ANTENNAS FOR MEDICAL APPLICATIONS - A device for directing energy to a target volume of tissue includes an inner conductor having a length and an outer conductor coaxially surrounding the inner conductor along the length. The outer conductor has a proximal portion and a distal portion. The distal portion of the outer conductor is provided with a number of apertures N defined therein for radiating energy, where N is an integer greater than 1, each aperture having a size and extending at an angle relative to a longitudinal axis of the outer conductor. At least one of the size and the angle of each aperture is varied in relation to the other apertures N−1 such that the energy radiated along the distal portion is substantially uniform. | 06-26-2014 |
20140180271 | SYSTEMS, APPARATUS, METHODS AND PROCEDURES FOR THE NON-INVASIVE TREATMENT OF TISSUE USING MICROWAVE ENERGY - The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using microwave energy. | 06-26-2014 |
20140188099 | PATTERNED ELECTRODES FOR TISSUE TREATMENT SYSTEMS - Methods, apparatus, and systems for treating tissue located beneath a tissue surface with electromagnetic energy delivered from a treatment electrode. The treatment electrode may include a conductive layer and a plurality of openings extending through the conductive layer. The openings may vary in size or area across the conductive layer, and may vary progressively in size or area with location relative to the electrode perimeter. | 07-03-2014 |
20140188100 | REINFORCED HIGH STRENGTH MICROWAVE ANTENNA - High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity. | 07-03-2014 |
20140188101 | Radio Frequency Generator and Method for a Cordless Medical Cauterization and Cutting Device - A circuit for generating a radio-frequency signal for a surgical device is disclosed. The circuit has a voltage regulator that supplies direct current (DC) voltage, a first MOSFET, a second MOSFET, and a MOSFET driver. The MOSFET driver receives the DC voltage supplied from the voltage regulator and has a local oscillator. The local oscillator switches the first MOSFET and the second MOSFET on and off at a frequency generated by the local oscillator. The circuit further includes a transformer connected to the first and second MOSFETs, having a center tap and a main voltage applied at the center tap, and providing an alternating current (AC) output. | 07-03-2014 |
20140188102 | Method for treating lower extremity varicose vein combined ultrasonic wave and microwave - The method for treating the lower extremity varicose vein combined ultrasonic wave and microwave of the present invention includes steps of firstly finding the diseased vein by the ultrasonic imaging equipment; and then directly effecting the microwave treatment catheter/needle on the diseased vein; by the concentric thermal coagulation release effect of the microwave to the tissue, instantly generating high temperature with the certain penetration range in a small range for tissue coagulation; and then gradually making the vascular fibrosis; finally making the completely atresia, thus achieving the therapeutic aim. The present invention uses the ultrasonic imaging microwave treatment technique to treat the lower extremity varicose vein disease, which accurately, firmly and thoroughly closes the varicose blood vessel, has the exact effect, small trauma and less pain to patients, less bleeding in surgery, quick recovery, simple operative procedure and no significant complication, is difficult to form the deep venous thrombosis. | 07-03-2014 |
20140194864 | Ablation Device with Sensor - An electrosurgical device having a distal tip for creating a lesion on tissue includes a first electrode and a second electrode that are parallel for the delivery of RF energy to tissue. A sensor electrode is provided parallel to and spaced away from the first electrode a different distance than the second electrode. When the sensor electrode and at least one of the first and second electrodes are in contact with tissue. The electrosurgical device can perform at least one of the following: ablating tissue, and sensing at least one selected from the group of voltage, tissue impedance, electrical conduction, conduction time, conduction velocity, and signal phase angle. | 07-10-2014 |
20140194865 | Microwave Surgical Instrument - It is an object to provide a surgical instrument capable of locally applying microwaves to a minute biological tissue. It has been found that microwaves can be transmitted to a tip of a tapered coaxial body ( | 07-10-2014 |
20140194866 | SYSTEM AND METHOD FOR LOCATING AND IDENTIFYING THE FUNCTIONAL NERVES INNERVATING THE WALL OF ARTERIES - System and method for locating and identifying nerves innervating the wall of arteries such as the renal artery are disclosed. The present invention identifies areas on vessel walls that are innervated with nerves; provides indication on whether a dose of energy is delivered accurately to a targeted nerve; and provides immediate post-procedural assessment of the effect of the energy delivered to the nerve. The method includes at least the steps to evaluate a change in physiological parameters after a dose of energy is delivered to an arterial wall; and to determine the type of nerve that the energy was directed to (none, sympathetic or parasympathetic) based on the results of the evaluation. The system includes at least a device for delivering a dose of energy to the wall of an artery; sensors for detecting physiological signals from a subject; and indicators to display the results obtained using the said method. | 07-10-2014 |
20140207133 | INTEGRATED PUMP AND GENERATOR DEVICE AND METHOD OF USE - The present disclosure relates to devices and methods for cooling of ablation technology used to treat tissue. The devices and methods disclosed herein utilize a generator assembly which includes an integrated cooling system, and a disposable subassembly which includes a disposable pump head and ablation device. | 07-24-2014 |
20140214019 | BIPOLAR ELECTROSURGICAL HAND SHEARS - An apparatus comprises a first jaw, a second jaw, a first handle, and a second handle. The second jaw is pivotally coupled with the first jaw. The first jaw and the second jaw are configured to grasp tissue. The jaws provide offset electrode surfaces that are operable to deliver bipolar RF energy to tissue grasped between the jaws. The apparatus is further operable to sever tissue. A lockout feature selectively prevents tissue severing, based on an energization state of the jaws. | 07-31-2014 |
20140214020 | SYSTEMS AND METHODS FOR ENDOMETRIAL ABLATION - Methods, systems and devices for endometrial ablation. In accordance with a method, a working end of an RF ablation device is positioned in a patient uterus to contact endometrial tissue, the working end comprising a dielectric wall capable of non-expanded and expanded shapes. An indicator mechanism is operatively coupled to the wall and configured to indicate non-expanded and expanded shapes of the wall. An expandable member, such as a balloon, is provided that expands to close the cervical canal during ablation. | 07-31-2014 |
20140214021 | ELECTROSURGICAL ELECTRODE - An electrode is for use in an electrosurgical probe, the electrode having two arms defining a longitudinal direction. The electrode also includes a loop depending from the two arms and defining a cutting area within the loop, and a vaporisation member attached to one side of the loop. The vaporisation member is such that it does not occlude the cutting area and yet presents a substantial profile when the electrode is moved in the longitudinal direction. The arrangement is such that when the electrode is moved in a first longitudinal direction, the loop is capable of resecting a sample of tissue. When the electrode is moved in the opposite longitudinal direction, the vaporisation member is capable of vaporising tissue adjacent thereto to form a groove therein. | 07-31-2014 |
20140214022 | METHOD AND APPARATUS FOR FRACTIONAL SKIN TREATMENT - An apparatus for cosmetic RF skin treatment where the RF energy supply is isolated from the patient treated, such that in course of treatment no undesired current flows through the subject body. | 07-31-2014 |
20140214023 | ELECTROSURGICAL DEVICES WITH DIRECTIONAL RADIATION PATTERN - A device for directing energy to a target volume of tissue includes an antenna assembly and an elongated body member. The elongated body member includes a proximal end portion and a distal end portion, wherein the proximal and distal end portions define a longitudinal axis. The elongated body member has a chamber defined therein that extends along the longitudinal axis, and a body wall surrounding the chamber. An antenna assembly is disposed in the chamber. The elongated body member also includes an opening in the body wall to allow energy radiated from the antenna assembly to transfer into the target volume of tissue. | 07-31-2014 |
20140236137 | ABLATION CATHETER SYSTEM WITH WIRELESS RADIO FREQUENCY TEMPERATURE SENSOR - Disclosed herein, among other things, are methods and apparatus related to ablation catheter systems with wireless temperature sensing. The present subject matter provides an ablation catheter system including an ablation catheter configured to ablate a target zone of tissue and at least one temperature sensitive resonator coupled to the ablation catheter. The resonator is configured to wirelessly emit a signal indicative of a sensed temperature in response to an interrogation signal. The ablation catheter system also includes an external device configured to provide the interrogation signal and to receive and decode the emitted signal from the resonator. The temperature sensitive resonator is configured to be placed proximate to and in thermal conduction with the target zone of tissue and to resonate at a frequency dependent upon a temperature of the resonator when excited by the interrogation signal, in various embodiments. | 08-21-2014 |
20140236138 | ABLATION CATHETER WITH WIRELESS TEMPERATURE SENSOR - Disclosed herein, among other things, are methods and apparatus related to ablation catheters with wireless temperature sensing. The present subject matter provides an ablation catheter system including an ablation transducer and a wireless temperature sensor. The wireless temperature sensor includes at least one temperature sensing element configured to sense a temperature-dependent parameter, circuitry configured to measure the sensed parameter and compute a temperature, a transmitter configured to wirelessly transmit a signal including at least one of the sensed parameter and the computed temperature, and a power supply. A controller is provided to coordinate timing of ablation therapy and sensing of the wireless temperature sensor, in various embodiments. | 08-21-2014 |
20140236139 | SYSTEM AND METHOD FOR GENERATING HEAT AT TARGET AREA OF PATIENT'S BODY - The embodiments herein provide a method and system for generating heat at a target area of a patient's body for treatment of lesions, tumors, cancer cells, body pain and nerve pain. The heat generated inside a target tissue is distributed throughout the target area. The system and method provides a real time monitoring of the generated heat and the temperature of the tissue. The system comprises a radio frequency (RF) antenna/transducer for receiving the generated RF waves from the RF generator. A controller/optimizer is provided for controlling a frequency of the RF waves and a transmission timing of the RF waves. A RF absorber/distributor comprising a plurality of closed loop circuits is provided. A miniaturized thermometer is arranged inside the RF absorber is arranged close to irradiation area for measuring the temperature which is transmitted to the controller. Several needles/probes are implanted at the target location of patient's body. | 08-21-2014 |
20140243810 | CATHETER ASSEMBLY FOR TREATMENT OF HYPERTROPHIC TISSUE - The present invention teaches a new apparatus and process of selective ablation of the hypertrophic tissue to treat hypertrophic cardiomyopathy. The apparatus and process involve percutaneously delivering radiofrequency energy through a manipulable catheter to irradiate the thickened septum to reduce tissue volume of the septum and enhance myocardial function. The invention also teaches use of a thermosensor feedback control to prevent coagulation at the RF producing electrodes and navigating the catheter with an ultrasound transducer operably attached to the catheter assembly. | 08-28-2014 |
20140257264 | SURGICAL TOOL FOR LSS DECOMPRESSION - A cutting device includes a lower jaw extending between a proximal end and a distal end. The distal end terminates with a cavity and a blunt tip. An upper jaw extends between and proximal end a distal end. The upper jaw is configured for translation along the lower jaw. The upper jaw includes a cutting tip configured to cut bone. | 09-11-2014 |
20140257265 | Systems and methods for track coagulation - Devices, and methods of use thereof, are disclosed for preventing tumor seeding when withdrawing the device along an entry-exit path. Some embodiments of the present invention comprise a method of withdrawing a probe through a tissue via a path that traverses at least some bone tissue, the method including withdrawing the probe through the path, and at least partially concurrently delivering energy in a bipolar manner from the probe to heat a layer of tissue surrounding the probe to a temperature sufficient for thermal coagulation necrosis of cells. The device may be withdrawn incrementally. | 09-11-2014 |
20140257266 | BALLOON CATHETER APPARATUS WITH MICROWAVE EMITTER - A method and balloon catheter apparatus for tissue ablation is disclosed. The apparatus comprises an elongated shaft having a proximal end, a distal end, one or more central lumens, adapted for positioning in an artery; an emitter capable of emitting microwave energy positioned at the distal end; an inflatable balloon associated with the emitter at the distal end configured to allow blood to pass through the artery while the balloon is inflated; and a control system at the proximal end. The method and balloon catheter apparatus is applicable at least to renal denervation procedures. | 09-11-2014 |
20140257267 | ADJUSTABLE TUNING OF A DIELECTRICALLY LOADED LOOP ANTENNA - A microwave antenna assembly is disclosed. The antenna assembly includes an elongated member defining a longitudinal axis and having proximal and distal ends. The antenna assembly also includes an outer conductor and an inner conductor each disposed within the elongated member and extending along the longitudinal axis. A portion of the inner conductor is deployable relative to the outer conductor such that the antenna assembly may transition from a first configuration to a second configuration. The antenna assembly also includes an expandable sheath at least partially disposed about a distal portion of the inner conductor and defining at one or more lumens configured to couple to a supply of dielectric material used to regulate the expansion of the expandable sheath. | 09-11-2014 |
20140257268 | Apparatus And Methods To Modulate Bladder Function - Apparatus and methods are provided to concentrate energy delivery in non-superficial target tissue within a trigone region of a human bladder wall to modulate bladder function. | 09-11-2014 |
20140276719 | ELECTROSURGICAL DEVICE WITH DRUM-DRIVEN ARTICULATION - A surgical device for operating on tissue comprises an end effector, a shaft, and an interface assembly. The shaft comprises an articulation section operable to provide deflection of the end effector relative to the longitudinal axis of the shaft. The interface assembly comprises a plurality of pulleys associated with drive shafts driven by an external system. The pulleys are operable to cause rotation of one or both of the shaft or end effector. The pulleys are further operable to cause articulation of the articulation section. The interface assembly further comprises drive components operable to cause movement of components of the end effector. | 09-18-2014 |
20140276720 | ROBOTIC ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT - An apparatus includes an interface assembly and a shaft assembly. The interface assembly is for use with a robotic system and includes a first drive assembly. The first drive assembly includes a first slot having a distal recess and a transverse recess. The shaft assembly is removably couplable with the interface assembly and includes an end effector and a first coupling feature. The first drive assembly of the interface assembly actuates the end effector of the shaft assembly. The first coupling feature is couplable with the first slot of the first drive assembly to longitudinally fix the shaft assembly relative to the interface assembly. | 09-18-2014 |
20140276721 | EXPANDABLE CANNULA AND METHOD OF USE - A cutting device includes an elongated shaft that extends between a proximal end and a distal end. A distal arm extends from the distal end of the elongated shaft. The distal arm includes an inner surface defining a cavity and an outer surface defining a blunt tip. At least one proximal arm extends from the distal end of the elongated shaft at a position proximal to the distal arm. The at least one proximal arm having an inner surface defines a cavity including a cutting portion configured to cut tissue. | 09-18-2014 |
20140276722 | ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT HAVING MODULAR SUBASSEMBLY - An apparatus comprises an end effector, a shaft assembly, and an interface assembly. The end effector is operable to manipulate tissue, the shaft assembly is in communication with the end effector and a portion of the shaft assembly extends proximally from the end effector. The interface assembly is in communication with the shaft assembly. The interface assembly comprises a housing portion, a shaft cartridge, and a base portion. The housing portion can engage the shaft cartridge. The shaft cartridge is able to rotate and articulate the end effector, and the shaft assembly extends from the shaft cartridge. The base portion and the housing portion are able to enclose the shaft cartridge. | 09-18-2014 |
20140276723 | ELECTROSURGICAL DEVICE WITH DISPOSABLE SHAFT HAVING RACK AND PINION DRIVE - An apparatus comprises an end effector, a shaft assembly, and an interface assembly. The end effector is coupled with the shaft assembly. The shaft assembly comprises a translating member extending through the shaft assembly. The interface assembly is operable to engage the shaft assembly and comprises a plurality of drive shafts and a rack. One of the drive shafts is operable to drive the rack along a path that is parallel to the longitudinal axis of the shaft assembly. A plurality of racks may be used to rotate the shaft assembly, articulate the shaft assembly, and/or drive the translating member through the shaft assembly to thereby actuate the end effector. | 09-18-2014 |
20140276724 | RADIOFREQUENCY INFLATABLE DEVICE - A device for performing a surgical procedure comprises an elongated shaft extending between a proximal end and a distal end and defines an outer surface and an inner surface. An expandable member is disposed at the distal end and is configured to receive inflation material. At least one electrode is disposed with the inflatable member. A cooling mechanism is configured to cool surrounding tissue that the device comes in contact. | 09-18-2014 |
20140276725 | METHOD AND SYSTEM OF CONTROLLING CONDUCTIVE FLUID FLOW DURING AN ELECTROSURGICAL PROCEDURE - Controlling conductive fluid flow during an electrosurgical procedure. At least some of the example embodiments are methods including: flowing conductive fluid from a source lumen to a suction lumen of an electrosurgical wand, the flowing with the electrosurgical wand in a first orientation; sensing a change in orientation of the electrosurgical wand to a second orientation different than the first orientation; and changing a control parameter associated with the conductive fluid flow, the changing responsive to the change in orientation of the electrosurgical wand. | 09-18-2014 |
20140276726 | INTRAUTERINE TREATMENT DEVICE WITH ARTICULATING ARRAY - An intrauterine device includes an articulating array. The intrauterine device can be operated by articulating the articulating array into an installed position or geometry within the uterus of a patient. Further, the articulating array can be constructed to include an insertion geometry have a smaller cross section than an installation geometry. The articulating array can also be constructed to be housed within a sheath in the intrauterine device. Once the sheath has been inserted into a patient, for example through the patient's cervix, the articulating array can be deployed in its insertion geometry and then articulated into an installed position. The articulating array can include a plurality of expansion chambers. The expansion chambers can be constructed and arranged to take on the installed geometry when expanded. In one embodiment, the purpose of the articulating array is to position a conductive array within the patient's uterus enabling ablation of the uterine lining. | 09-18-2014 |
20140276727 | Reliable Low Profile Junction for Electrode Array - A device and method for retrieving an electrode array. The medical device includes a catheter defining a proximal end, a distal end, and a lumen therethrough. A control wire slidably receivable within the lumen is included, the control wire defining a proximal end and a distal end, the distal end of the control wire defining an enlarged portion. A treatment portion receivable within the lumen is included, the treatment portion including a proximal portion adapted to receive the enlarged portion at the distal end of the control wire. | 09-18-2014 |
20140276728 | RADIO FREQUENCEY CATHETER TO TARGET LIGAMENTUM FLAVUM - A device for performing a surgical procedure an elongated shaft extending between a proximal end and a distal end and includes an outer surface and an inner surface, the inner surface defining a passageway. A stylet configured for moveable disposal within the passageway of the elongated shaft. The stylet includes a blunt distal tip configured for disposal outside the distal end of the elongated shaft and to prevent damage to adjacent tissue. An expandable member including a proximal end and a distal end. The proximal end of the expandable member is disposed with the distal end of the elongated shaft and the distal end of the expandable member is connected to the distal end of the stylet. At least one electrode disposed with the expandable member. | 09-18-2014 |
20140276729 | FORMED DEPLOYABLE SUPERELASTIC BLADE AND METHOD OF USE - A device includes an outer member extending along a longitudinal axis between a first end and a second end. The first end includes an opening. The outer member includes an inner surface defining a first passageway that is in communication with the opening. An inner member is movably disposed in the first passageway. The inner member includes an inner surface defining a second passageway. The inner member further includes a first end including a cutting tip. The inner member is movable between a first orientation in which the cutting tip is disposed within the first passageway and the inner member has a linear configuration and a second orientation in which the cutting tip extends through the opening and the inner member has an arcuate configuration. Methods of use are provided. | 09-18-2014 |
20140276730 | SURGICAL INSTRUMENT WITH REINFORCED ARTICULATION SECTION - An apparatus comprises a shaft, and end effector, and an articulation section. The articulation section is disposed between the shaft and the end effector. The articulation section includes a proximal portion and a distal portion. The distal portion is pivotable relative to the proximal portion about a first pivot axis. A reinforcement member extends between the proximal and distal portions. The reinforcement member is configured to pivot relative to the proximal portion about a second pivot axis. The reinforcement member is configured to pivot relative to the distal portion about a third pivot axis. An articulation section may include a combination of a pivoting section and a flexing section. Reinforcement members may prevent a firing beam from buckling as the firing beam is driven through an articulated articulation section. | 09-18-2014 |
20140276731 | ELECTROSURGICAL INSTRUMENT END EFFECTOR WITH COMPLIANT ELECTRODE - An end effector for operating on tissue comprises an upper jaw, a lower jaw, a flexible member, and a pair of conductive members. The upper jaw and the lower jaw are configured to receive tissue when in an open position and the upper jaw is movable toward the lower jaw. The flexible member is coupled to either the upper jaw or the lower jaw, and is configured to deform in response to compression of tissue between the jaws. One of the conductive members is associated with the flexible member and is configured to move with the flexible member in response to compression of tissue between the jaws. The end effector may be configured to manipulate the position of muscle within tissue in response to compression of tissue between the jaws. | 09-18-2014 |
20140276732 | ELECTROSURGICAL INSTRUMENT WITH RESTRICTED TRIGGER - An apparatus for operating on tissue includes an end effector, a first actuator, and a second actuator. The end effector includes a first jaw pivotable relative to a second jaw to a closed position. The first actuator is movable from a first position to a second position to pivot the first jaw to the closed position. The first actuator engages the second actuator in the second position to selectively provide RF energy to the end effector. | 09-18-2014 |
20140276733 | MEDIGUIDE-ENABLED RENAL DENERVATION SYSTEM FOR ENSURING WALL CONTACT AND MAPPING LESION LOCATIONS - An ablation catheter includes an elongated body having a proximal end and a distal end. At least one ablation element is disposed on the body between the proximal end and the distal end and configured to ablate renal tissue to control hypertension. At least one localization sensor is disposed on the body and configured to interact with a magnetic field. The at least one localization sensor aids in determining an appropriate target tissue for ablation. | 09-18-2014 |
20140276734 | BLUNT TIP SURGICAL CUTTING DEVICE AND METHOD - A cutting device includes an elongated shaft extending between a proximal end and a distal end. A lower portion extends from the distal end of the elongated shaft and includes an outer surface and an inner surface spaced apart from the outer surface which together form a blunt end configured as a stop so as to protect adjacent tissue. An upper portion extends from the distal end of the elongated shaft and including an inner surface. The upper portion is configured so as to be disposed opposite the lower portion. A cutting element is disposed between the lower portion and the upper portion and is configured for retractable extension beyond the distal end of the elongated shaft so as to contact tissue. | 09-18-2014 |
20140276735 | Tissue Clamping Features of Surgical Instrument End Effector - An apparatus comprises a body, a shaft assembly, and an end effector. The shaft assembly extends distally from the body. The end effector is in communication with the shaft assembly. The end effector comprises a first jaw and a second jaw. The second jaw comprises a proximal portion and a distal portion. The second jaw is moveable relative to the first jaw between a first position, a second position, and a third position. The second jaw in the first position is open relative to the first jaw. The second jaw in the second position is positioned such that the distal portion is closer to the first jaw than the proximal portion. The second jaw in the third position is parallel the first jaw. | 09-18-2014 |
20140276736 | Surgical Instrument with Partial Trigger Lockout - An end effector comprises a first jaw, a second jaw, a firing beam, and a lockout feature. The second jaw pivots relative to the first jaw from an open position to a closed position. The firing beam has a sharp distal end and translates between the first and second jaws. The firing beam translates from a proximal position to a first distal position to pivot the second jaw to the closed position. The end effector applies bipolar RF energy when the firing beam is in the first distal position. The firing beam then translates to a second distal position to sever tissue captured between the first and second jaws. The lockout feature prevents the firing beam from advancing from the first distal position to the second distal position until the lockout feature is actuated. | 09-18-2014 |
20140276737 | RF ENABLED INFLATABLE BONE TAMP - A device for performing a surgical procedure includes an elongated shaft extending between a proximal end and a distal end. The shaft includes an outer surface and an inner surface. An expandable member is disposed at the distal end of the shaft. The expandable member is configured to receive inflation material. At least one electrode is disposed with the inflatable member. Methods of use are disclosed. | 09-18-2014 |
20140276738 | SURGICAL INSTRUMENT WITH MULTIPLE CLAMPING MECHANISMS - A nested trigger assembly for a surgical instrument may generally comprise a first trigger and a second trigger, wherein the first trigger and the second trigger are movable together on a first stroke of the nested trigger assembly, wherein the second trigger is configured to be biased away from the first trigger after the first stroke and before a second stroke, and wherein the second trigger is configured to be moved toward to the first trigger during the second stroke. A surgical instrument may generally comprise a shaft comprising a proximal end and a distal end, a handle extending from the proximal end, wherein the handle comprises a gripping portion, and a nested trigger assembly extending from the handle. The nested trigger assemble may comprise one of a separable trigger assembly and a divisible trigger assembly. | 09-18-2014 |
20140276739 | MICROWAVE ENERGY-DELIVERY DEVICE AND SYSTEM - A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun. | 09-18-2014 |
20140276740 | Recirculating Cooling System For Energy Delivery Device - An energy delivery device cooling system includes a reservoir connector assembly and an elongate member. The elongate member has first and second lumens in fluid communication with the reservoir. The first lumen includes an outflow port and the second lumen includes a return port each in fluid communication with the reservoir. The device further includes a tubing system having a first end and a second end. The first end connected in fluid communication with the outflow port and the second end in fluid communication with the return port. The second end configured to return a fluid to the reservoir. The tubing system connects to an energy delivery device to cool the fluid. | 09-18-2014 |
20140276741 | PEAK PLASMA BLADE FOR SOFT TISSUE DECOMPRESSION - Cutting device for resecting nerve or soft tissue while reducing or preventing arcing or heating of surrounding tissues are provided. The cutting devices include a probe having a lumen, a distal end and a proximal end, the distal end having a tip and a cutting surface positioned near its tip. The cutting surface has cutting edges configured to receive and conduct pulsed plasma mediated RF discharges. The cutting devices also include a sleeve covering the probe, the sleeve containing at least one aperture configured to expose the cutting surface. Intermediate the probe and the sleeve, some cutting devices include a metal insert that can cover the probe exposing only the cutting edges of the cutting surface. Methods for cutting nerve and/or soft tissue utilizing the cutting devices are also provided. | 09-18-2014 |
20140276742 | FEEDBACK SYSTEMS AND METHODS FOR RENAL DENERVATION UTILIZING BALLOON CATHETER - A renal denervation system includes an ablation catheter and an inflation balloon. The renal denervation catheter is insertable into a renal artery to perform a renal denervation procedure. The inflation balloon is inflatable within the renal artery, wherein one of a blood pressure condition in the renal artery resulting from operation of the inflation balloon and a performance characteristic of the inflation balloon indicates efficacy of the renal denervation procedure. | 09-18-2014 |
20140276743 | METHODS AND DEVICES FOR FLUID ENHANCED MICROWAVE ABLATION THERAPY - Devices and methods for fluid enhanced ablation therapy using microwave antennas are described herein that provide improved heat transfer into a target volume of tissue and improved antenna cooling compared to prior art designs. In one embodiment, fluid can be introduced into a target volume of tissue along with the delivery of therapeutic energy from a microwave antenna positioned within the target volume of tissue. The fluid can become heated by cooling the microwave antenna and, if additional heating of the fluid is desired, a heating element disposed within the microwave antenna can supplementally heat the fluid prior to introduction into the target volume of tissue. | 09-18-2014 |
20140276744 | SURGICAL CUTTING DEVICE - A cutting device includes an elongated shaft that extends between a proximal end and a distal end. A distal arm extends from the distal end of the elongated shaft. The distal arm includes an inner surface defining a cavity and an outer surface defining a blunt tip. At least one proximal arm extends from the distal end of the elongated shaft at a position proximal to the distal arm. The at least one proximal arm has an inner surface defining a cavity including a cutting portion configured to cut tissue. | 09-18-2014 |
20140276745 | STEERABLE CATHETER SYSTEM AND METHOD OF USING SAME - A steerable catheter system is provided including an elongated shaft having a proximal end, a distal end and an outer surface. The outer surface includes at least one cavity configured to facilitate movement of the distal end relative to the proximal end so as to steer the elongated shaft. A catheter tip is attached to the distal end of the shaft. The catheter tip comprises a curved body having at least one RF cutting edge and at least one non-cutting area recessed from the at least one cutting edge. | 09-18-2014 |
20140276746 | FEEDBACK SYSTEMS AND METHODS UTILIZING TWO OR MORE SITES ALONG DENERVATION CATHETER - A renal denervation system includes a renal denervation catheter and a flow determining system. The renal denervation catheter includes a plurality of ablation members positioned at a distal end portion thereof. The renal denervation catheter is insertable into a renal artery. The flow determining system includes a processor and first and second flow determining members spaced apart on the renal denervation catheter. The processor is configured to determine a change in blood flow through the renal artery resulting from a renal denervation procedure using the renal denervation catheter in response to input from the first and second flow determining members. | 09-18-2014 |
20140276747 | SYSTEM AND METHOD FOR DENERVATION - A catheter apparatus for treatment of a human patient is described, the catheter apparatus having a central axis and comprising a shaping structure moveable between a delivery state having a first helical shape, and a deployed state having a second helical shape. The shaping structure is configured to have a reverse taper with a structural diameter that varies over the length of the shaping structure such that the structural diameter of the shaping structure at the proximal end is smaller than the structural diameter of the shaping structure at the distal end. | 09-18-2014 |
20140276748 | Helical Push Wire Electrode - Helical push wire electrodes are provided. The electrodes may create a continuous helical lesion. One or more electrodes may wind around a support section and create a set of helixes having fixed ends and hitches. Pushing or pulling an end of the electrode transforms the electrodes between a delivery configuration and a deployed configuration such that the set of helixes expand or contract axially. Different portions of the electrodes may be surrounded by sleeves. The sleeves may regulate how the wires transform and provide insulation. Various insulation configurations of the electrodes may provide creations of discrete lesions, efficient energy delivery and reduced power consumption. | 09-18-2014 |
20140276749 | CREST-FACTOR CONTROL OF PHASE-SHIFTED INVERTER - A method for controlling an electrosurgical generator includes generating at least one electrosurgical waveform at a selected energy setting through an RF output stage comprising an RF inverter coupled to a power source. The at least one electrosurgical waveform has a duty cycle and a crest factor. The method also includes adjusting a repetition rate of the at least one electrosurgical waveform based on the selected energy setting to regulate the duty cycle of the at least one electrosurgical waveform. The method also includes applying the at least one electrosurgical waveform to tissue through at least one electrode and measuring an output voltage of the at least one electrosurgical waveform. The method also includes supplying a control signal to the RF inverter based on the repetition rate when the output voltage is increasing to regulate the crest factor of the at least one electrosurgical waveform. | 09-18-2014 |
20140276750 | SYSTEMS AND METHODS FOR NARROWBAND REAL IMPEDANCE CONTROL IN ELECTROSURGERY - The electrosurgical systems and associated methods of the present disclosure perform narrowband real impedance control for precise treatment of tissue in electrosurgery. The electrosurgical systems include an electrosurgical generator that includes an output stage configured to generate electrosurgical energy to treat tissue, a plurality of sensors configured to sense voltage and current waveforms of the electrosurgical energy, and a controller coupled to the output stage to control the generated electrosurgical energy. The controller includes a signal processor that (1) determines a complex-valued voltage and a complex-valued current based on the voltage waveform and the current waveform sensed by the plurality of sensors using a plurality narrowband filters, and (2) calculates a real part of an impedance of the tissue using the complex-valued voltage and the complex-valued current. The controller also includes an output controller that controls the output stage based on the calculated real part of the impedance of the tissue. | 09-18-2014 |
20140276751 | SYSTEM CONFIGURED TO PROVIDE CONTROLLED DEPTH OF HEMOSTASIS - An electrosurgical device is provided and includes a handset having a shaft extending therefrom. The electrosurgical device includes a pair of electrodes disposed at a distal end of the shaft. One or more sensors are in operable communication with the pair of electrodes to detect a pressure applied thereto. The amount of electrosurgical energy that is transmitted to the pair of electrodes is proportional to the amount of pressure that is applied to the pair of electrodes and detected by the sensor. | 09-18-2014 |
20140276752 | NERVE ABLATION DEVICES AND RELATED METHODS OF USE - An ablation device is provided for forming one or more lesions on a wall of an artery, such as a renal artery. The device can include an elongate shaft having a proximal end and a distal end. The device may also include a handle disposed at the proximal end, a distal tip including an electrode disposed at the distal end, and one or a plurality of independently expandable splines proximate the distal end. | 09-18-2014 |
20140276753 | SYSTEMS AND METHODS FOR ARC DETECTION AND DRAG ADJUSTMENT - The systems and methods of the present disclosure detect arcing patterns or impedance changes and adjust the level of electrosurgical energy provided to tissue based on the detected arcing patterns or impedance changes. In embodiments, the drag force imposed on the electrode or blade of an electrosurgical instrument may be controlled by adjusting the level of electrosurgical energy based on the detected arcing patterns or impedance changes. The arcing patterns or impedance changes may be detected by sensing voltage and/or current waveforms of the electrosurgical energy and analyzing the sensed voltage and/or current waveforms. The current and/or voltage waveform analysis may involve calculating impedance based on the sensed voltage and current waveforms and calculating changes in impedance over time. The waveform analysis may involve detecting harmonic distortion using FFTs, DFTs, Goertzel filters, polyphase demodulation techniques, and/or bandpass filters. The waveform analysis may involve determining a normalized difference or the average phase difference between the voltage and current waveforms. | 09-18-2014 |
20140276754 | SYSTEM AND METHOD FOR POWER CONTROL OF ELECTROSURGICAL RESONANT INVERTERS - An electrosurgical generator is disclosed. The generator includes an RF output stage configured to generate at least one electrosurgical waveform including a plurality of cycles; at least one sensor coupled to the RF output stage, the at least one sensor configured to measure a voltage and a current of the at least one electrosurgical waveform; and a controller coupled to the at least one sensor and the RF output stage, the controller including a proportional-integral-derivative controller having at least one of voltage limiter or a current limiter, the proportional-integral-derivative controller configured to saturate the RF output stage based on voltage-current characteristics of the RF output stage. | 09-18-2014 |
20140276755 | MEDICAL SYSTEMS AND METHODS FOR MODULATING NERVES - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a medical device for modulating nerves. The medical device may include an elongate shaft having a distal region. Two or more electrodes may be positioned adjacent to the distal end region of the elongate shaft. A control unit may supply power and control algorithms to the electrodes. The control algorithm may allow the electrodes to be operated simultaneously and individually. | 09-18-2014 |
20140276756 | WALL-SPARING RENAL NERVE ABLATION CATHETER WITH SPACED ELECTRODE STRUCTURES - Systems and methods for performing tissue modulation are disclosed. A nerve modulation assembly may include a guide sheath having a proximal end, a distal end, and a lumen extending therebetween. An actuation member, also having a proximal end and a distal end, extends along a central elongate axis disposed within the lumen. Further, the ablation member disposed at the distal end of the actuation member is configured to be actuated from the proximal end of the guide sheath. In particular, the ablation member includes a radiofrequency based electrode member, and an insulation member disposed circumferentially around the radiofrequency based electrode member. | 09-18-2014 |
20140276757 | FIXED POSITION RF ELECTRODE - In one aspect, a fixed position RF electrode for conducting surgical procedures, includes a main device body detachably connectable to an RF generating system, a first polarized conductor and a second oppositely polarized conductor, a bipolar electrical conduit passing through the main device body that passes RF energy from the RF generating system to the first polarized conductor and the second oppositely polarized conductor, and a bipolar electrode for contacting a surgically operative material. | 09-18-2014 |
20140276758 | OPEN IRRIGATED ABLATION CATHETER - Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with irrigation ports at a distal end, and a coolant conduit. The distal end of the coolant conduit may extend into a proximal portion of the electrode tip body. Fluid flow from the coolant conduit may be diverted proximally and/or towards the wall of the electrode tip body by one or more openings proximal of a closed distal end of the conduit or by a structure blocking and diverting flow from an open distal end of the conduit. | 09-18-2014 |
20140276759 | OPEN IRRIGATED ABLATION CATHETER WITH PROXIMAL COOLING - Medical devices and methods for using medical devices are disclosed. An example medical device may include an open-irrigated ablation catheter. The open-irrigated ablation catheter may include a catheter body, an electrode tip body with one or more irrigation ports at a distal end, and a proximal insert for providing cooling fluid to a proximal end of the electrode tip body. | 09-18-2014 |
20140296839 | STEP-DOWN COAXIAL MICROWAVE ABLATION APPLICATORS AND METHODS FOR MANUFACTURING SAME - Microwave ablation applicators and methods for manufacturing the microwave ablation applicators are disclosed. A microwave ablation applicator includes a feed-line segment, a step-down segment, and a radiator base segment. The feed-line segment includes a first inner conductor, a first dielectric disposed on the first inner conductor, and a first outer conductor disposed on the first dielectric. The step-down segment includes a second inner conductor, a second dielectric disposed on the second inner conductor, and a second outer conductor disposed on the second dielectric. The radiator base segment includes a third inner conductor disposed on the third inner conductor, a third outer conductor disposed on the proximal end of the third dielectric so as to form a feed gap at a distal end of the radiator base segment, a balun dielectric disposed on the third outer conductor, and a balun outer conductor disposed on the balun dielectric. | 10-02-2014 |
20140296840 | IMPEDANCE MATCHING IN A MICROWAVE ELECTROSURGICAL SYSTEM - A method and apparatus is disclosed for the ablation of biological tissue to produce a therapeutic effect. An adjustment is made to the output frequency of an electrosurgical generator during the ablation cycle to accommodate changes in the electrical properties of the apparatus and the biological tissues that occur as energy is transferred to the tissue. The adjustment is made to better align the source impedance with that of the load. | 10-02-2014 |
20140296841 | SYSTEM AND METHOD FOR MONITORING ABLATION SIZE - A system for monitoring ablation size includes a power source including a microprocessor for executing one or more control algorithms. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A plurality of spaced-apart electrodes is operably disposed along a length of the microwave antenna. The plurality of spaced-apart electrodes is disposed in electrical communication with one another and each of the plurality of spaced-apart electrodes has a threshold impedance associated therewith corresponding to the radius of the ablation zone. | 10-02-2014 |
20140303611 | MEDICAL ABLATION SYSTEM AND METHOD OF MAKING - An electrosurgical device comprises an elongated shaft having an axis with an interior channel extending along the axis to an opening in a distal end of the shaft. The channel is configured to be coupled to a negative pressure source, and an electrode with a conductive, usually hook-shaped, distal portion is coupled to the shaft and moveable between a first position in which a distal tip of the electrode is disposed proximate to a periphery of the opening of and a second position in which the distal electrode tip is exposed and spaced apart from the opening. | 10-09-2014 |
20140303612 | ELECTROSURGICAL SYSTEM - An electrosurgical system includes at least a first unit and a second unit, the second unit being detachably connectible to the first unit and including an electrode assembly. The first unit includes a power supply, an RF oscillator circuit for generating a radio frequency output, and an output stage adapted to supply an RE output to the electrode assembly. The second unit includes an identification circuit presenting, in an alternating manner, a parameter with a first finite non-zero value for a first time period, and a parameter with a second finite value for a second time period. The first unit includes a sensing circuit and a controller adapted to detect a characteristic of the identification circuit and provide an output signal, the controller connected to the sensing circuit and receiving the output signal, adjusts the RF output so as to suit the particular electrode assembly. | 10-09-2014 |
20140330264 | PET-RFA COMPLEX MEDICAL DEVICE AND TREATMENT METHOD USING THE SAME - Provided are a positron emission tomography (PET)-radiofrequency ablation (RFA) complex medical device and a treatment method using the same. According to an aspect of the present invention, there is provided a positron emission tomography (PET)-radiofrequency ablation (RFA) complex medical device comprising: a PET module which obtains, in real time, a location of a target to be treated by scanning a patient; and an RFA module which remotely treats the target using heat by focusing the heat on the location of the target. | 11-06-2014 |
20140330265 | SURGICAL RESECTION APPARATUS - Surgical cutting apparatus having a treatment channel and a measurement channel for conveying microwave energy from a source to an antenna at a cutting edge. The measurement channel operates at lower power than the treatment channel for determining when higher energy can be safely applied. The apparatus may deliver microwave radiation at differing frequencies to one or more antennas at the cutting edge, e.g. to provide different treatment effects. The source may generate an output for an antenna whose frequency can be selected e.g. for most efficient operation. Selection may be automatic based on detected magnitude and phase of reflected signals during a frequency sweep of a forward signal. Power delivered to tissue via the cutting element may be manually boosted to deal with large blood vessels. The apparatus may include a reflected power monitor for recognising behaviour in reflected signals received from the antenna to trigger automatic pre-emptive action. | 11-06-2014 |
20140336628 | SURGICAL INSTRUMENT WITH JAW OPENING ASSIST FEATURE - An apparatus for operating on tissue includes an end effector, an actuator, and a spring assembly. The end effector includes a first jaw and a second jaw that pivots relative to the first jaw from an open position to a closed position. The actuator is coupled with the second jaw to pivot the second jaw relative to the first jaw. The spring assembly is coupled with the actuator and is adjustable from a first position to a second position. The spring assembly compresses to resiliently bias the actuator to pivot the second jaw to the open position when the spring assembly is in the first position. The spring assembly compresses a smaller amount when the spring assembly is in the second position. | 11-13-2014 |
20140336629 | SURGICAL INSTRUMENT WITH TRANSLATING COMPLIANT JAW CLOSURE FEATURE - An apparatus for operating on tissue comprises a body, an elongate shaft, an end effector, a compression member, and a firing beam. The end effector has a pair of jaws configured to open and close along a first plane. The end effector is capable of delivering RF energy to the tissue. The compression member is configured to drive the jaws to a closed position once the compression member has been distally driven into the end effector. The compression member is substantially inflexible along the first plane yet is flexible along a second plane that is transverse to the first plane. The firing beam is operable to sever tissue captured within the end effector. The compression member may be actuated distally to close the jaws upon tissue and provide uniform compression of the tissue along the length of the jaws before the firing beam is advanced through the tissue. | 11-13-2014 |
20140343545 | MICROWAVE ABLATION GENERATOR CONTROL SYSTEM - A microwave energy delivery and measurement system, including a microwave energy source configured to delivery microwave energy to a microwave energy delivery device, a measurement system configured to measure at least one parameter of the microwave energy delivery device and a switching network configured to electrically isolate the microwave energy source and the measurement system. The measurement system is configured to actively measure in real time at least one parameter related to the microwave energy delivery device. | 11-20-2014 |
20140358138 | GAIN COMPENSATION FOR A FULL BRIDGE INVERTER - An electrosurgical generator and related systems and methods using a gain-compensated full bridge topology. Gain nonlinearity is corrected by applying impedance and phase correction factors to a control loop to achieve a linear gain structure. In embodiments, gain compensation is performed by comparing an RF setpoint signal with a calculated output signal to generate a first error signal. An impedance correction factor is applied to the first error signal to generate a second error signal. The second error signal is processed by a proportional-integral-derivative controller to generate a phase control signal. A phase control correction factor is applied to the phase control signal to generate a corrected pulse width modulation driving signal, which is used to generate PWM driving signals for a full-bridge inverter. One or more sensors provide feedback for comparison with the RF setpoint. | 12-04-2014 |
20140358139 | ELECTROSURGICAL ENERGY CHANNEL SPLITTERS AND SYSTEMS FOR DELIVERING ELECTROSURGICAL ENERGY - An electrosurgical energy channel splitter apparatus includes a channel input a plurality of channel outputs, and a controller. The channel input is configured to receive electrosurgical energy from an electrosurgical energy source. Each channel output is configured to couple to a respective electrosurgical device. The controller is coupled to the channel input and the plurality of channel outputs. The controller is configured to selectively direct the electrosurgical energy from the channel input to one of the plurality of channel outputs. | 12-04-2014 |
20140358140 | MICROWAVE TREATMENT DEVICES AND METHODS - The present invention discloses embodiments of microwave antennas and other energy delivery systems. The present invention also discloses systems and methods for the delivery of various medical components within or on a body for performing one or more medical procedures. Several embodiments herein disclose medical systems comprising a combination of one or more medical components and one or more elongate steerable or non-steerable arms that are adapted to mechanically manipulate the one or more medical components. Several embodiments of microwave antennas are disclosed that comprise an additional diagnostic or therapeutic modality located on or in the vicinity of the microwave antennas. | 12-04-2014 |
20140371737 | SURGICAL INSTRUMENT WITH ARTICULATION INDICATOR - An apparatus for operating on tissue has a body, an elongate shaft, and an end effector. The elongate shaft extends distally from the body. The elongate shaft has an articulation section that is operable to selectively deflect the end effector laterally relative to the elongate shaft. The articulation section presents a first indication section and a second indication section. The first and second indication section may be configured to visually indicate the direction and degree of articulation of the articulation section. The first and second indication section may alternatively be configured to indicate the angular orientation of the end effector about the longitudinal axis. The body may further comprise a knob that is operable to rotate the shaft about the longitudinal axis. The knob may include a third indication section and a fourth indication section that align with the first and the second indication sections of the articulation section, respectively. | 12-18-2014 |
20140371738 | MICROWAVE COAPTIVE SURGICAL SEALING TOOL - A coaptive surgical sealing tool may be similar to an ordinary hemostat with long (50, 60, 70 or 80 mm) thin jaws for sliding into the liver parenchyma, without tearing the larger blood vessels. The jaws are spring loaded and are designed for uniform compression, and to avoid closing too quickly. The jaws are capable of sealing a 50, 60, 70 or 80 mm sealing length, in a single bite, although it can also seal shorter lengths as well. The tool can be used with existing ablative therapy microwave generators. The tool may be provided with irrigation and/or suction. | 12-18-2014 |
20140378958 | ELECTROSURGICAL ABLATION APPARATUS - An electrosurgical ablation apparatus for generating and emitting electromagnetic radiation energy for ablating biological tissue is disclosed. The apparatus comprises an operating unit ( | 12-25-2014 |
20140378959 | Method and Apparatus for Treating Subcutaneous Histological Features - A system and method for treating subcutaneous histological features without affecting adjacent tissues adversely employs microwave energy of selected power, frequency and duration to penetrate subcutaneous tissue and heat target areas with optimum doses to permanently affect the undesirable features. The frequency chosen preferentially interacts with the target as opposed to adjacent tissue, and the microwave energy is delivered as a short pulse causing minimal discomfort and side effects. By distributing microwave energy at the skin over an area and adjusting power and frequency, different conditions, such as hirsuitism and telangiectasia, can be effectively treated. | 12-25-2014 |
20150011989 | HEPATIC NEUROMODULATION USING MICROWAVE ENERGY - According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The method includes delivering a neuromodulation catheter within a vessel (e.g., hepatic artery) having surrounding nerves that innervate the liver (e.g., sympathetic nerves of the hepatic plexus). The method may also include modulating (e.g., disrupting, ablating, stimulating) the nerves by mechanical compression, energy delivery, or fluid delivery. | 01-08-2015 |
20150018813 | DETECTION OF ABLATION ELECTRODE CONTACT WITH TISSUE - A method includes delivering a Radio Frequency (RF) signal having a time-varying power from an intra-body probe to tissue in a vicinity of the probe in order to ablate the tissue. A temperature is measured in the vicinity of the probe. A decision is made as to whether the probe is in contact with the tissue, by comparing the measured temperature to a temperature threshold that varies in time depending on the time-varying power of the RF signal. | 01-15-2015 |
20150018814 | METHODS FOR RESHAPING CARTILAGE STRUCTURES - Described are methods and systems for reshaping a cartilage structure. Such methods comprise treating the cartilage structure with electromagnetic energy and fitting a device to the cartilage structure to retain it in the desired place, form, and/or orientation. Systems comprise an emitter of electromagnetic energy and a device to the cartilage structure to retain it in the desired place, form, and/or orientation. | 01-15-2015 |
20150025519 | MICROWAVE SENSING FOR TISSUE SEALING - A system for monitoring the target tissue during a tissue sealing procedure is disclosed. The system includes a forceps having opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp the tissue therebetween. Each of the jaw members includes a sealing member. The system also includes a generator coupled to the sealing members so that therapeutic energy is delivered to the target tissue. The generator includes an output stage configured to generate therapeutic energy and a microwave detector configured to measure reflected and/or absorbed microwave signals. The monitored microwave signals may be either the therapeutic energy signal or a separate non-therapeutic microwave monitoring signal. The generator also includes a controller operatively coupled to the microwave detector. The controller is configured to determine the state of the tissue based on the reflected and/or absorbed microwave signals and to control the delivery of therapeutic energy from the generator to tissue based on the microwave measurements. | 01-22-2015 |
20150025520 | SYSTEM AND METHOD FOR MONITORING ABLATION SIZE - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A radiation detection device is operably disposed on the microwave antenna. The radiation detection device is configured to generate a voltage corresponding to a radius of the ablation zone, wherein the radiation detection device is in operative communication with at least one module associated with the power source. The at least one module triggers a signal when a predetermined threshold voltage is measured corresponding to the radius of the ablation zone. | 01-22-2015 |
20150032094 | TRI-MODE ELECTRODES WITH INTEGRAL TEMPERATURE SENSING - The present system relates to an apparatus for desiccating tissue. The apparatus includes an electrode assembly having a heating element, a metal electrode, and a temperature sensor. The apparatus also includes a radio frequency (RF) generator, coupled to the metal electrode, having a signal generator for generating an electrical signal, and switch for selecting between a first mode, second mode and third mode of operation. In the first mode, the electrical signal is directed to the metal electrode and applied to the tissue. In the second mode, the electrical signal is directed to the heating element such that heat produced by the heating element is applied to the tissue. In the third mode, the electrical signal is directed to the metal electrode and the heating element, for applying the electrical signal and the heat to the tissue. | 01-29-2015 |
20150032095 | DEVICES AND METHODS FOR TREATING CHRONIC TOTAL OCCLUSION - Catheterization systems and methods for treatment of a condition within a blood vessel are provided that include the use of a catheter, a balloon immediately adjacent to the distal end of the catheter, an inflation device for expanding the balloon, and an occlusion-penetrating device for gaining access through an occlusion. The occlusion penetrating device may include an indeflator configured to injected fluid at a high pressure, an RF wire, a hollow needle wire, a dissection tool, a laser wire, or even a very small balloon to exploit existing microchannels in the occlusion. | 01-29-2015 |
20150038956 | Microwave Device For Tissue Ablation - A microwave device for the ablation of biological tissues including a coaxial antenna, including an internal conductor, surrounded by a layer of dielectric material, an external conductor coaxial to the dielectric metal tip electrically connected to the internal conductor, and a quarter wave impedance transformer including a sleeve made of dielectric material having a proximal end covered with a layer of metal, the metal extending over nearly a quarter wavelength of electromagnetic field in the dielectric at the operating frequency of the device or of odd multiples of the quarter wavelength, the layer of metal material being connected electrically to the external conductor. | 02-05-2015 |
20150038957 | MICROWAVE ANTENNA HAVING A COAXIAL CABLE WITH AN ADJUSTABLE OUTER CONDUCTOR CONFIGURATION - A microwave ablation system includes a power source. A microwave antenna is adapted to connect to the power source via a coaxial cable that includes inner and outer conductors having a compressible dielectric operably disposed therebetween. The inner conductor in operative communication with a radiating section associated with the microwave antenna. The outer conductor includes a distal end transitionable with respect to each of the inner conductor, compressible dielectric and radiating section from an initial condition wherein the distal end has a first diameter to a subsequent condition wherein the distal end has second diameter. Transition of the distal end from the initial condition to the subsequent condition enhances the delivery of microwave energy from the power source to the inner conductor and radiating section such that a desired effect to tissue is achieved. | 02-05-2015 |
20150045785 | MICROWAVE APPLICATOR AND METHOD OF FORMING A MICROWAVE APPLICATOR - A method of forming a microwave applicator comprising forming a body comprising dielectric material so that there is a void in the dielectric material, and depositing conductive material in the void to form a feed for coupling energy into the dielectric material. | 02-12-2015 |
20150057651 | FLUID COOLED CHOKE DIELECTRIC AND COAXIAL CABLE DIELECTRIC - The microwave antenna assembly includes a feedline electrically connected to an elongated shaft by a choke electrical connector. The feedline includes an inner conductor, an outer conductor, an elongated shaft and a choke electrical connector. The inner conductor is disposed in coaxial arrangement with the inner conductor and forms a dielectric supply lumen therebetween. The elongated shaft at least partially surrounding the feedline and form a dielectric return lumen therebetween. The choke electrical connector surrounds at least a portion of the feedline and electrically connects the feedline outer conductor to the elongated shaft. A low-loss dielectric fluid is supplied between the inner conductor and the outer conductor of the feedline and forms a dielectric barrier therebetween. The low-loss dielectric fluid also forms a dielectric barrier between the outer conductor of the feedline and the elongated shaft and the choke electrical connector forms a plurality of apertures extending therethrough, the apertures forming at least a portion of the dielectric return lumen. | 02-26-2015 |
20150073401 | SYSTEM AND METHOD FOR TISSUE TREATMENT USING NON-SYMMETRIC RADIO-FREQUENCY ENERGY WAVEFORM - A method for soft tissue destruction comprises applying high voltage pulses causing irreversible electroporation alternating with low amplitude pulses of opposite polarity balanced to provide negligible average current and minimize risk of electrical shock. The method may be accompanied by tissue heating to reduce the electroporation threshold and negative pressure for skin shaping and optimal voltage distribution. | 03-12-2015 |
20150073402 | METHOD AND APPARATUS FOR VOLUMETRIC SPECIFIC FRACTIONAL ENERGY IMPACT - A method and system for treating a surgical incision to prevent scarring is disclosed. The system comprising an applicator is configured to protrude a target tissue from one or both sides of a surgical incision into a treatment cavity located in the applicator. The system is further configured to deliver fractional treatment, from energy sources located along the inner walls of the treatment cavity, to an incision edge. | 03-12-2015 |
20150073403 | MICROWAVE ABLATION SYSTEM WITH DIELECTRIC TEMPERATURE PROBE - An electromagnetic surgical ablation system having a generator adapted to selectively provide surgical ablation energy to an ablation probe, and methods of operating same, are disclosed. The system includes a controller operatively coupled to the generator, and a tissue sensor probe operatively coupled to the controller. The tissue sensor provides a tissue temperature and at least one tissue dielectric property to the controller. During an electromagnetic tissue ablation procedure, the controller monitors tissue temperature and the at least one tissue dielectric property to determine tissue status, and to activate and deactivate the generator in accordance therewith. | 03-12-2015 |
20150080875 | BALLOON CATHETER APPARATUS WITH MICROWAVE EMITTER - A microwave ablation system and method is disclosed comprising a balloon catheter apparatus and a control system. The balloon catheter apparatus comprises a catheter configured to house a coaxial cable and one or more coolant channels, an inflatable balloon located at the distal end of the catheter, and an antenna positioned in the inflatable balloon and in communication with the coaxial cable. The control system comprises a fluid pump configured to introduce fluid into a proximal end of the catheter, a power amplifier capable of generating microwave energy for delivery to the target tissue zone for at least one energy application cycle ranging from 60 seconds to 600 seconds at a frequency ranging from 2.4 GHz to 2.5 GHz, and a computer system configured to monitor and/or regulate the delivery of microwave energy to the target tissue, the fluid pump, at least one sensor, and antenna reflected power. | 03-19-2015 |
20150094707 | CABLE MANAGEMENT SYSTEM FOR MEDICAL TREATMENT DEVICE - An enclosure of a power source for medical treatment devices includes a handle portion extending from a first surface of the enclosure. The handle portion includes a standoff extending away from the first surface, and a flange extending transversely from the standoff and defining a plane that is generally parallel to the first surface. Together, the first surface, the standoff, and the flange define an open annular space. A power cable may be wound about the standoff to at least partially occupy the open annular space. One or more notches in the flange are configured to seat the power cable to secure its loose end(s). In this manner, the power cable can be safely stored to reduce the risks that the power cable may become damaged, may interfere with other devices in the treatment area, or may be misplaced. | 04-02-2015 |
20150100051 | ELECTROSURGICAL DEVICES, DIRECTIONAL REFLECTOR ASSEMBLIES COUPLEABLE THERETO, AND ELECTROSURGICAL SYSTEMS INCLUDING SAME - A directional reflector assembly includes a tubular shaft having a proximal end and a distal end and adapted to operably engage an electrosurgical ablation probe, and a conical aperture having a proximal open apex joined to a distal end of the tubular shaft, and a distal open base, wherein an interior volume of the tubular shaft is open to the conical aperture. | 04-09-2015 |
20150112320 | PERIPHERAL SWITCHING DEVICE FOR MICROWAVE ENERGY PLATFORMS - An electrosurgical system includes a power source, a microwave applicator, a switching mechanism, and a controller. The power source is configured to generate microwave energy. The microwave applicator is configured to deliver microwave energy from the power source to tissue. The switching mechanism includes a housing having input and output ports. The input port is connectable to the power source and the output port is connectable to the microwave applicator. The housing is configured to house one or more switches therein. The controller is in operative communication with the switching mechanism to toggle the switch from a first state, wherein microwave energy generated by the power source is directed to the microwave applicator to a second state, wherein microwave energy is directed to a resistive load operably coupled to the switching mechanism. | 04-23-2015 |
20150119870 | COOLED MICROWAVE DENERVATION CATHETER WITH INSERTION FEATURE - A catheter is disclosed for creating a lesion in nerve-containing tissue spaced from a body lumen while protecting tissue forming and adjacent to a wall of the body lumen from injury. The catheter includes a catheter body having at least one fluid passage therein, a balloon in communication with the at least one fluid passage to receive cooling fluid for inflating the balloon, a microwave antenna carried by the catheter that emits microwave energy omnidirectionally, thereby heating the tissue spaced from the body lumen to a temperature sufficient to cause thermal damage while the tissue forming and adjacent to the wall of the body lumen are maintained at a temperature where thermal damage does not occur, and a tip structure located at an end of the catheter body, configured to receive a guide wire extending through the at least one fluid passage in the catheter body. | 04-30-2015 |
20150126991 | SYSTEM AND METHOD FOR MONITORING ABLATION SIZE - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with memory associated with the power source. The memory includes one or more data look-up tables including one or more electrical parameter associated with the microwave antenna. The one or more electrical parameters corresponding to an ablation zone having a radius. The one or more electrical parameters include a threshold value, wherein when the threshold value is met the power source is adjusted to form an ablation zone of suitable proportion. | 05-07-2015 |
20150133908 | CHOKED DIELECTRIC LOADED TIP DIPOLE MICROWAVE ANTENNA - A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween. A radiating portion is also included having an unbalanced dipole antenna including a proximal portion and a distal portion that are of different lengths. The proximal portion includes at least a portion of the inner conductor and the inner insulator and the distal portion includes a conductive member. | 05-14-2015 |
20150133909 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. | 05-14-2015 |
20150133910 | SYSTEM AND METHOD FOR ABLATION PROCEDURE MONITORING USING ELECTRODES - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue. One or more electrodes are disposed on the antenna assembly and are configured to be positioned relative to tissue upon insertion of the antenna assembly into tissue. The one or more electrodes are configured to generate a feedback signal in response to an electrical signal supplied thereto from the power source. The feedback signal corresponds to the proximity of tissue relative to the at least one electrode and is configured to be compared to a predetermined parameter to determine a depth of the insertion of the antenna assembly into tissue. The power source is configured to control the delivery of microwave energy to the antenna assembly based on the comparison. | 05-14-2015 |
20150141977 | Organ Resection Tool - It is an object to provide a surgical tool for excising a hard solid organ such as cirrhotic liver or cutting the organ into a groove without causing bleeding. The inventors of the present invention have found that an organ resection tool including a brush-like structure capable of performing microwave irradiation and/or a brush-like structure capable of receiving a microwave can achieve the above-mentioned object, to thereby arrive at the present invention (organ resection tool including a brush structure capable of performing microwave irradiation). For example, an organ can be crushed or scraped away by manually abrading the organ with a brush of a solid organ resection tool including a brush structure capable of performing microwave irradiation according to the present invention. Further, the organ can be concurrently coagulated through the microwave irradiation to stop bleeding. | 05-21-2015 |
20150148792 | SYSTEMS, APPARATUS, METHODS, AND PROCEDURES FOR THE NON-INVASIVE TREATMENT OF TISSUE USING MICROWAVE ENERGY - A system applies, in a non-invasive manner, energy to a targeted tissue region employing a controlled source of energy, a multiple use applicator, and a single use, applicator-tissue interface carried by the applicator. The system can generate and apply energy in a controlled fashion to form a predefined pattern of lesions that provide therapeutic benefit, e.g., to moderate or interrupt function of the sweat glands in the underarm (axilla). | 05-28-2015 |
20150289933 | SYSTEM AND METHOD FOR MONITORING ABLATION SIZE - A system for monitoring ablation size is provided and includes a power source including a microprocessor for executing at least one control algorithm. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. An ablation zone control module is in operative communication with a memory associated with the power source. The memory includes one or more data look-up tables including data pertaining to a control curve varying over time and being representative of one or more electrical parameters associated with the microwave antenna. Points along the control curve correspond to a value of the electrical parameters and the ablation zone control module triggers a signal when a predetermined threshold value of the electrical parameter(s) is measured corresponding to the radius of the ablation zone. | 10-15-2015 |
20150305809 | MICROWAVE ANTENNA PROBE HAVING A DEPLOYABLE GROUND PLANE - A surgical ablation system employing an ablation probe having a deployable ground plane is disclosed. The disclosed system includes a source of ablation energy and a source of electrosurgical energy, and a switching assembly configured to select between ablation and electrosurgical modes. The probe includes a cannula having a shaft slidably disposed therein. The shaft includes a deployable ground plane electrode assembly and a needle electrode disposed at distal end of the shaft. As the shaft is extended distally from the cannula, the ground plane electrode unfolds, and the needle electrode is exposed. Electrosurgical energy is applied to tissue via the needle electrode to facilitate the insertion thereof into tissue. Ablation energy is applied to tissue via the needle electrode to achieve the desired surgical outcome. The shaft, ground plane electrode and needle electrode are retracted into the cannula, and withdrawn from the surgical site. | 10-29-2015 |
20150305810 | MICROWAVE BASED ELECTROSURGICAL COAGULATING KNIFE - A microwave based electrosurgical coagulating knife capable of simultaneous or near simultaneous cauterization and dissection of tissue to prevent unwanted or dangerous blood loss during tissue removal. | 10-29-2015 |
20150313670 | METHODS AND DEVICES FOR APPLYING ENERGY TO BODILY TISSUES - Devices and methods for treating tissue with microwave energy used in applications such as destroying a soft tissue by microwave ablation and/or creating point, line, area or volumetric lesions. Various embodiments of flexible, low-profile devices are also disclosed where such device can be inserted non-invasively or minimally invasively near or into the target tissue such as cardiac tissue. The devices disclosed herein comprise antennas wherein the field profile generated by an antenna is tailored and optimized for a particular clinical application. The antennas use unique properties of microwaves such as interaction of a microwave field with one or more conductive or non-conductive shaping elements to shape or redistribute the microwave field. | 11-05-2015 |
20150320494 | APPARATUS AND METHOD OF USE FOR TREATING BLOOD VESSELS - An electrosurgical apparatus is provided. The electrosurgical apparatus includes a cannula insertable into a patient and positionable adjacent abnormal tissue. The electrosurgical apparatus includes a microwave antenna that includes a distal end having a radiating section receivable within the cannula and positionable within a patient adjacent abnormal tissue. The microwave antenna is adapted to connect to a source of electrosurgical energy for transmitting electrosurgical energy to the radiating section. A portion of the radiating section substantially encompasses a portion of the abnormal tissue and may be configured to apply pressure thereto. The microwave antenna is actuated to electrocautery treat tissue to reduce blood flow to the abnormal tissue. | 11-12-2015 |
20150320495 | MANAGEMENT OF VOLTAGE STANDING WAVE RATIO AT SKIN SURFACE DURING MICROWAVE ABLATION - A dielectric spacer for use during microwave ablation of tissue is disclosed. The dielectric spacer includes a housing having a predetermined thickness and a skin-contacting bottom surface. The housing is configured to be filled with a dielectric material having a predetermined dielectric permittivity. The housing is further configured to be placed on the tissue in proximity with at least one microwave antenna assembly, wherein the thickness and the dielectric permittivity are configured to shift a maximum voltage standing wave ratio of the at least one microwave antenna assembly. | 11-12-2015 |
20150320496 | SYSTEM AND METHOD FOR TREATING TISSUE USING AN EXPANDABLE ANTENNA - An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue of a patient. The radiating portion has an outer conductor and an inner conductor extending therethrough. The inner conductor is disposed within the outer conductor and defines a longitudinal axis. One of the inner conductor and the outer conductor is movable relative to the other to cause at least a portion of the outer conductor to expand radially relative to the longitudinal axis. | 11-12-2015 |
20150320497 | SYSTEM AND METHOD FOR TREATING TISSUE USING AN EXPANDABLE ANTENNA - A method of repairing an inner vessel wall includes the step of inserting at least a portion of a microwave ablation device into a vessel. The microwave ablation device includes an inner conductor disposed within an outer conductor and defines a longitudinal axis. The method also includes the steps of inserting a repairing sealant into the vessel such that the repairing sealant is disposed between an inner vessel wall and the outer conductor and expanding at least a portion of the outer conductor relative to the longitudinal axis to force at least a portion of the repairing sealant into the inner vessel wall. The method also includes the step of delivering energy to at least one of the inner conductor and the outer conductor to activate the repairing sealant to repair the inner vessel wall. | 11-12-2015 |
20150327928 | SYSTEM AND METHOD FOR PERFORMING AN ABLATION PROCEDURE - A method of performing an ablation procedure includes the initial step of supplying a fluid to a cooling chamber defined within an antenna assembly. The method also includes the steps of decreasing the temperature of the fluid to form a solid material and inserting the antenna assembly into tissue. The method also includes the step of supplying energy to the antenna assembly to treat tissue. Residual heat from the antenna assembly transitions the solid material back to the fluid. The method also includes the step of circulating the fluid within the antenna assembly to dissipate heat emanating from the antenna assembly. | 11-19-2015 |
20150327929 | ABLATION SYSTEMS, PROBES, AND METHODS FOR REDUCING RADIATION FROM AN ABLATION PROBE INTO THE ENVIRONMENT - The ablation systems, ablation probes, and corresponding methods according to the present disclosure reduce or eliminate energy radiating from an ablation probe into the environment. Some ablation probes include a retractable sheath that shields at least the radiating portion of the ablation probe. The retractable sheath and/or the ablation probe may include conduits through which a fluid may flow to shield the radiating portion and to drive the retractable sheath to an extended state. Other ablation probes include apertures defined in the probe walls through which the fluid can flow to expand a balloon surrounding the radiating portion. Yet other ablation probes include a thermal indicator to indicate the temperature of the ablation probe to a user. The ablation systems include fluid circuits and associated mechanical controls for varying the contents and/or flow rate of the fluid provided to the radiating portion of the ablation probe. | 11-19-2015 |
20150342676 | SYSTEMS AND METHODS OF MEASURING TEMPERATURE OF TISSUE DURING AN ABLATION PROCEDURE - The present invention provides systems and methods for radiometrically measuring temperature during ablation. An interface module includes a processor; a first input/output (I/O) port configured to receive digital radiometer and thermocouple signals from an integrated catheter tip (ICT) that includes a radiometer; a second I/O port configured to receive ablative energy from an electrosurgical generator; a temperature display; a patient relay in communication with the first and second I/O ports and the processor; and a computer-readable medium storing radiometer and thermocouple operation parameters and instructions for causing the processor to: calculate a temperature adjacent to the ICT based on the radiometer and thermocouple signals and the operation parameters, causing the temperature display to display the calculated temperature, and closing the patient relay so as to pass ablative energy received on the second I/O port to the first I/O port. | 12-03-2015 |
20150351838 | METHODS AND APPARATUS FOR REDUCING SWEAT PRODUCTION - Methods and apparatuses are provided for reducing sweat production via, for example, the removal, disablement, and incapacitation of sweat glands in the epidermis, dermis and subdermal tissue regions of a patient. In one embodiment, a method of treating a patient is provided which involves identifying a patient having a condition of excessive sweating, positioning an energy delivery device proximate to a skin tissue of the patient and delivering energy to sweat glands to halt secretion of sweat. The energy delivery device may include microwave delivery devices, RF delivery devices, and cryogenic therapy devices. Some embodiments may include using a cooling element for avoiding destruction of non-target tissue and/or a suction device to localize treatment at specific portions of the skin fold. | 12-10-2015 |
20150351839 | MICROWAVE THERMOMETRY FOR MICROWAVE ABLATION SYSTEMS - A microwave ablation system incorporates a microwave thermometer that couples to a microwave transmission network connecting a microwave generator to a microwave applicator to measure noise temperature. The noise temperature is processed to separate out components the noise temperature including the noise temperature of the tissue being treated and the noise temperature of the microwave transmission network. The noise temperature may be measured by a radiometer while the microwave generator is generating the microwave signal or during a period when the microwave signal is turned off. The microwave ablation system may be configured as a modular system having one or more thermometry network modules that are connectable between a microwave applicator and a microwave generator. Alternatively, the modular system includes a microwave generator, a microwave applicator, and a microwave cable that incorporate a microwave thermometry network module. | 12-10-2015 |
20150366612 | ABLATION EMITTER ASSEMBLY - An emitter assembly can include a proximal shaft, a distal shaft, a shunt that connects the proximal shaft to the distal shaft, and a tip that is connected to a distal end of the distal shaft. An inner conductor can extend through the proximal shaft, the shunt, and the distal shaft and into the tip to provide microwave energy to the tip. An outer conductor can extend into the shunt. The shunt can therefore form an electrical connection between the outer conductor and a proximal ring of electrically conductive material formed on an exterior surface of the distal shaft. Distal shaft can be made of a thermally conductive but electrically insulated material to facilitate transfer of heat from the distal shaft to the proximal shaft. | 12-24-2015 |
20150366613 | ABLATION PROBE WITH METALIZED CERAMIC COMPONENT - Ablation probes can include one or more metalized ceramic components. A metalized ceramic component can include one or more traces for conducting electrical energy and/or for functioning as an antenna for emitting radiation during an ablation procedure. A shaft of an ablation probe may be formed of metalized ceramic to give the shaft strength and to provide an electrical insulator between traces formed on the shaft and other components of the probe. A tip of an ablation probe may also be formed of metalized ceramic. | 12-24-2015 |
20150366614 | APPARATUS, SYSTEM AND METHOD FOR PERFORMING AN ELECTROSURGICAL PROCDURE - An apparatus for performing a microwave ablation procedure is provided. The apparatus includes a catheter including an open proximal end and a closed distal end configured to percutaneously access tissue. A directional microwave antenna probe adapted to connect to a source of microwave energy selectively couples to the catheter. The directional microwave antenna is rotatable within the catheter for directing the emission of microwave energy therefrom to tissue | 12-24-2015 |
20150366615 | MICROWAVE ENERGY-DELIVERY DEVICE AND SYSTEM - A microwave ablation device including a cable assembly configured to connect a microwave ablation device to an energy source and a feedline in electrical communication with the cable assembly. The microwave ablation device further includes a balun on an outer conductor of the feedline, and a temperature sensor on the balun sensing the temperature of the balun. | 12-24-2015 |
20150374438 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. | 12-31-2015 |
20160000498 | BALLOON CATHETER APPARATUSES FOR RENAL DENERVATION - Methods and apparatus are provided for non-continuous circumferential treatment of a body lumen. Apparatus may be positioned within a body lumen of a patient and may deliver energy at a first lengthwise and angular position to create a less-than-full circumferential treatment zone at the first position. The apparatus also may deliver energy at one or more additional lengthwise and angular positions within the body lumen to create less-than-full circumferential treatment zone(s) at the one or more additional positions that are offset lengthwise and angularly from the first treatment zone. Superimposition of the first treatment zone and the one or more additional treatment zones defines a non-continuous circumferential treatment zone without formation of a continuous circumferential lesion. Various embodiments of methods and apparatus for achieving such non-continuous circumferential treatment are provided. | 01-07-2016 |
20160000505 | Radiation Applicator for Microwave Medical Treatment - A radiation applicator with a dielectric body ( | 01-07-2016 |
20160008069 | MICROWAVE THERMOMETRY FOR MICROWAVE ABLATION SYSTEMS | 01-14-2016 |
20160015453 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for delivering energy to difficult to access tissue regions (e.g. peripheral lung tissues), and/or reducing the amount of undesired heat given off during energy delivery. | 01-21-2016 |
20160030111 | SYSTEMS AND METHODS FOR IN SITU QUANTIFICATION OF A THERMAL ENVIRONMENT - A microwave ablation system is presented including a microwave applicator having an antenna configured to deliver microwave energy and a microwave generator coupled to the microwave applicator and configured to generate a microwave signal and transmit the microwave signal to the antenna. The microwave ablation system further includes a radiometer configured to measure emissions from a thermal field created when the microwave applicator delivers microwave energy, the thermal field providing in-situ quantitative information of a material in the thermal field. The quantitative information is used to automatically adjust power transmission and time settings of the microwave generator to compensate for different thermal environments. | 02-04-2016 |
20160030112 | CHOKED DIELECTRIC LOADED TIP DIPOLE MICROWAVE ANTENNA - A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating section coupled to the feedline, the radiating section including a dipole antenna and a tubular dielectric loading disposed about the dipole antenna. | 02-04-2016 |
20160038233 | DEVICES AND METHODS FOR COOLING MICROWAVE ANTENNAS - Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough. | 02-11-2016 |
20160038234 | MICROWAVE ABLATION CATHETER AND METHOD OF UTILIZING THE SAME - A microwave ablation catheter is provided. The microwave ablation catheter includes a coaxial cable connected at its proximal end to a microwave energy source and at its distal end to a distal radiating section. The coaxial cable includes inner and outer conductors and a dielectric positioned therebetween. The inner conductor extends distally past the outer conductor and is in sealed engagement with the distal radiating section. A balun is formed in part from a conductive material electrically connected to the outer conductor of the coaxial cable and extends along at least a portion of the coaxial cable. The conductive material has a braided configuration and is covered by at least one insulative material. | 02-11-2016 |
20160045249 | SYSTEM AND METHOD FOR TESTING ELECTROSURGICAL GENERATORS - A system is provided. The system includes an electrosurgical generator configured to measure, collect and record data pertaining to a characteristic of tissue as the tissue is being electrosurgically treated. A tuner configured to couple to the electrosurgical generator includes a tuning circuit providing a load having a variable complex impedance for the electrosurgical generator when the electrosurgical generator is connected thereto. A controller including stored data pertaining to impedance values is in operable communication with the electrosurgical generator for retrieving the recorded data pertaining to the characteristic of tissue. The controller is in operable communication with the tuner for varying a complex impedance of the load. The controller configured to compare the recorded data pertaining to the at least one characteristic of tissue with the stored data pertaining to the plurality of impedance values and to adjust the tuner to one of the plurality of impedance values. | 02-18-2016 |
20160045257 | METHOD FOR SELECTION AND TREATMENT OF HYPERTENSIVE PATIENTS WITH RENAL DENERVATION - Systems and methods are disclosed to identify and treat hypertensive patients most likely to benefit from a renal denervation procedure. The method can include identifying one or more signals that patient's hypertension is sympathetically driven; and performing a renal denervation procedure to denervate the sympathetic nerves located near at least one of the patient's renal arteries. | 02-18-2016 |
20160045258 | FLOW RATE VERIFICATION MONITOR FOR FLUID-COOLED MICROWAVE ABLATION PROBE - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from an energy source to tissue and a coolant source operably coupled to the energy source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the energy source and a piezoelectric transducer operably coupled to the fluid path to detect a force of fluid flow through the fluid path. The piezoelectric transducer is configured to generate a signal based on the detected force of fluid through the fluid path. The controller is configured to control the energy source output based on the generated signal. | 02-18-2016 |
20160045259 | MICROWAVE-SHIELDED TISSUE SENSOR PROBE - A tissue sensor probe and corresponding electromagnetic surgical ablation system are disclosed. The system includes an ablation probe coupled to a generator, a controller coupled to the generator, and a tissue sensor probe coupled to the controller. The tissue sensor probe includes an electrically-conductive enclosure configured to shield a temperature sensor from electromagnetic radiation produced by the ablation probe. At least a portion of the electrically-conductive enclosure is made of a high thermal-conductivity material. A material of high thermal-conductivity is disposed in the electrically-conductive enclosure in thermal association with the thermally-conductive material of the electrically-conductive enclosure. The temperature sensor is disposed in the material of high thermal conductivity so as to electrically isolate the temperature sensor from the enclosure. The temperature sensor provides tissue temperature to the controller, which monitors tissue temperature to determine tissue status and activates and deactivates the generator based on the tissue status. | 02-18-2016 |
20160045260 | DUAL-BAND DIPOLE MICROWAVE ABLATION ANTENNA - A triaxial microwave antenna assembly is disclosed. The triaxial microwave antenna includes a feedline having an inner conductor, a central conductor disposed about the inner conductor and an outer conductor disposed about the central conductor and a radiating portion including a high frequency radiating section and a low frequency radiating section. | 02-18-2016 |
20160045261 | MICROWAVE ANTENNA HAVING A CURVED CONFIGURATION - A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue. | 02-18-2016 |
20160045262 | REINFORCED HIGH STRENGTH MICROWAVE ANTENNA - A microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity. | 02-18-2016 |
20160045263 | MICROWAVE ANTENNA - According to one aspect of the present disclosure, a microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna having a proximal portion and a distal portion. The antenna assembly also comprises a sheath disposed over the feedline and the radiating portion defining a chamber around the feedline and the radiating portion. The chamber is adapted to circulate coolant fluid therethrough. The antenna assembly further includes a connection hub having cable connector coupled to the feedline, an inlet fluid port and an outlet fluid port. The connection hub includes a bypass tube configured to provide for flow of the coolant fluid from the cable connector directly to the outlet fluid port. | 02-18-2016 |
20160045264 | MICROWAVE ANTENNA PROBES AND METHODS OF MANUFACTURING MICROWAVE ANTENNA PROBES - A method of manufacturing a surgical instrument includes charging a first component to a first voltage, charging a second component to a second voltage such that a pre-determined voltage differential is established between the first and second components, axially moving at least one of the first and second components relative to the other, monitoring an electrical characteristic to determine whether an axial distance between the first and second components is equal to a target axial distance, and retaining the first and second components in fixed position relative to one another once the axial distance between the first and second components is equal to the target axial distance. | 02-18-2016 |
20160051326 | SYSTEMS AND METHODS FOR USING A DIGITAL CONTROLLER TO ADJUST ONE OR MORE OPERATIONS OF A MICROWAVE GENERATOR - A surgical system is presented including a microwave generator having a resistive identification connector with a plurality of resistive channels, each resistive channel having a plurality of resistive values. The surgical system further includes a microwave applicator having a device identifier, the microwave applicator configured to be connected to the microwave generator via a reusable cable. The surgical system also includes a digital controller configured to be connected to the resistive identification connector of the microwave generator. The device identifier of the microwave applicator is relayed to the digital controller via a resistive channel of the plurality of resistive channels of the resistive identification connector to enable the digital controller to control the microwave applicator by adjusting at least one operation of the microwave generator. The microwave generator further includes at least one digital pass-through line to allow direct communication between the microwave applicator and the digital controller. | 02-25-2016 |
20160051327 | SYSTEMS AND METHODS FOR SPHERICAL ABLATIONS - A system including a catheter navigable to a location within a patient, a lumen extending through the catheter and ending at the distal end in an orifice, a fluid controller in fluid communication with the lumen of the catheter and capable of supplying a fluid to or removing a fluid from an area proximate the desired location. The control of the fluid in the area proximate the desired location affecting a dielectric constant of the area proximate the desired location. The system includes a microwave energy source, and a microwave ablation probe connected to the microwave energy source, the microwave ablation probe being navigable to a desired location within the patient. Application of energy from the microwave energy source to the microwave ablation probe in an area proximate the desired location having the affected dielectric constant results in a substantially spherical tissue effect in the area proximate the desired location. | 02-25-2016 |
20160051328 | MICROWAVE TISSUE DISSECTION AND COAGULATION - A surgical instrument is configured to concurrently dissect and coagulate tissue. The surgical instrument includes a handle and a shaft extending distally from the handle. The shaft includes an outer hypotube, a lumen coaxially-disposed within the hypotube and extending beyond a distal end thereof, a coaxial feedline coaxially-disposed within the lumen, and having an inner conductor and an outer conductor disposed coaxially about the inner conductor, and a coolant tube coaxially-disposed between the lumen and the coaxial feedline to form an inflow conduit and an outflow conduit. The instrument further includes a dissecting head assembly coupled to a distal end of the shaft. The dissecting head assembly includes a dielectric core having a substantially planar radiating surface and at least one non-radiating surface, a reflective coating disposed on the at least one non-radiating surface of the dielectric core, and a blade extending from the radiating surface. | 02-25-2016 |
20160058507 | MICROWAVE ABLATION SYSTEM - A microwave ablation catheter assembly is provided. A coaxial cable configured to connect to a microwave energy source at its proximal end and at its distal end to a distal radiating section. The coaxial cable includes inner and outer conductors and a dielectric positioned therebetween. An extended working channel is configured to receive the coaxial cable for positioning the coaxial cable adjacent target tissue. At least a portion of an inner surface of the extended working channel is electrically conductive. The electrically conductive inner surface of the extended working channel may function as a balun to maintain a balanced signal between the inner and outer conductors of the coaxial cable when the distal radiating section of the coaxial cable is energized. | 03-03-2016 |
20160058508 | NARROW GAUGE HIGH STRENGTH CHOKED WET TIP MICROWAVE ABLATION ANTENNA - An electromagnetic surgical ablation probe having a coaxial feedline and cooling chamber is disclosed. The disclosed probe includes a dipole antenna arrangement having a radiating section, a distal tip coupled to a distal end of the radiating section, and a ring-like balun short, or choke, which may control a radiation pattern of the probe. A conductive tube disposed coaxially around the balun short includes at least one fluid conduit which provides coolant, such as dionized water, to a cooling chamber defined within the probe. A radiofrequency transparent catheter forms an outer surface of the probe and may include a lubricious coating. | 03-03-2016 |
20160066985 | HEAT-DISTRIBUTION INDICATORS, THERMAL ZONE INDICATORS, ELECTROSURGICAL SYSTEMS INCLUDING SAME, AND METHODS OF DIRECTING ENERGY TO TISSUE USING SAME - An electrosurgical system includes an electrosurgical power generating source, an energy applicator operably associated with the electrosurgical power generating source, a heat-distribution indicator adapted to change echogenic properties in response to heat generated by energy delivered by the energy applicator, and a processor unit configured to generate at least one electrical signal for controlling at least one operating parameter associated with the electrosurgical power generating source. The system also includes an imaging system capable of acquiring image data. The imaging system is communicatively-coupled to the processor unit. The processor unit is adapted to determine an ablation rate at least in part based on analysis of one or more images acquired by the imaging system. | 03-10-2016 |
20160074115 | MICROWAVE PROVIDING DEVICE AND MICROWAVE SURGICAL DEVICE PROVIDED WITH SAME - A microwave providing device is provided, which is capable of effectively extending the coagulation range of a treatment target tissue by setting the conditions for intermittently providing microwaves. An output controller controls a microwave generator based on a first efficiency of dielectric heating by microwaves with respect to a cumulative radiation period of microwaves radiated intermittently to a treatment target tissue S and a second efficiency of dielectric heating by microwaves with respect to a cumulative radiation period of microwaves radiated continuously to the treatment target tissue so that microwaves are intermittently radiated at least after a reference cumulative radiation period that is set in advance as a cumulative radiation period at which the first efficiency becomes larger than the second efficiency. | 03-17-2016 |
20160081747 | ENERGY DELIVERY SYSTEMS AND USES THEREOF - The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy. | 03-24-2016 |
20160081748 | RE-HYDRATION ANTENNA FOR ABLATION - A system for use with a microwave antenna includes a microwave antenna configured to deliver microwave energy from a power source to tissue and a sensor module in operative communication with the power source and configured to detect a reflectance parameter. The system further includes a jacket adapted to at least partially surround the microwave antenna to define a fluid channel between the jacket and the microwave antenna. A plurality of fluid distribution ports are defined through the jacket and are in fluid communication with the fluid channel to permit the flow of fluid through the jacket. The system further includes a fluid pumping system operably coupled to the power source and configured to selectively provide cooling fluid to the fluid channel for distribution through the fluid distribution ports based on the reflectance parameter. | 03-24-2016 |
20160095657 | MINIATURIZED MICROWAVE ABLATION ASSEMBLY - Microwave applicators are disclosed which include a first transmission line segment, a second transmission line segment, and a third transmission line segment. The first transmission line segment includes a first inner conductor, a first dielectric disposed on the first inner conductor, and a first outer conductor disposed on the first dielectric. The second transmission line segment includes a second inner conductor, a second dielectric disposed on the second inner conductor, and a second outer conductor disposed on the second dielectric. The third transmission line segment includes a third inner conductor disposed on the third inner conductor, a third outer conductor disposed on the proximal end of the third dielectric. The impedance looking into the second transmission line segment from the first transmission line segment can be adjusted by adjusting the length of the third transmission line segment. | 04-07-2016 |
20160095658 | ENERGY-BASED SURGICAL INSTRUMENT INCLUDING INTEGRATED NERVE DETECTION SYSTEM - An energy-based surgical system includes a light beam source and a probe defining a channel about a longitudinal axis thereof and a side opening near a distal end thereof. Methods of nerve detection using the system include positioning the probe adjacent targeted tissue, transmitting a beam of light from the light beam source through the channel of the probe and the side opening of the probe to the targeted tissue, measuring a response to determine the presence of a nerve within the targeted tissue, and delivering energy to the targeted tissue with the probe to treat tissue. | 04-07-2016 |
20160100880 | Microwave Coaptive Surgical Sealing Tool - A coaptive surgical sealing tool may be similar to an ordinary hemostat with long (50, 60, 70 or 80 mm) thin jaws for sliding into the liver parenchyma, without tearing the larger blood vessels. The jaws are spring loaded and are designed for uniform compression, and to avoid closing too quickly. The jaws are capable of sealing a 50, 60, 70 or 80 mm sealing length, in a single bite, although it can also seal shorter lengths as well. The tool can.be used with existing ablative therapy microwave generators. The tool may be provided with irrigation and/or suction. | 04-14-2016 |
20160106502 | SURGICAL ANTENNA STRUCTURE - A surgical spatula has a planar transmission line for carrying microwave energy formed from a sheet of a first dielectric material which has first and second conductive layers on opposite sides thereof. The surgical spatula also has a coaxial cable for delivering microwave energy to the planar transmission line. The coaxial cable has an inner conductor, an outer conductor coaxial with the inner conductor and a second dielectric material separating the inner and outer conductors. The inner and outer conductors extend beyond the second dielectric to overlap opposite surfaces of the transmission line and electrically contact the first conductive layer and second conductive layer respectively. The width of the first and second conductive layers is selected to create an impedance match between the transmission line and the coaxial cable. | 04-21-2016 |
20160106503 | Microwave Applicator - A microwave applicator having a probe which comprises an elongate shaft ( | 04-21-2016 |
20160120588 | ELECTROSURGICAL APPARATUS HAVING RF PULSE PROFILE CONTROLLER - A pulsed RF cut waveform profile for electrosurgery, in which each pulse is formed of a composite of different pulse portions. The pulse includes a controllable treatment portion whose duration can be truncated as necessary to ensure that the average power delivered by the pulse as a whole does not exceed a predetermined value. A limit for the average power delivered by the composite pulse (i.e. total energy delivered over the duration of the ON and OFF portions divided by the pulse duration) may be selectable by the operator. The ON portion may have multiple sub-portions, which have different purposes. Each pulse may be automatically controlled for pulse width in this manner, so that the RF signal effectively responds intelligently to conditions at the probe tip during treatment. | 05-05-2016 |
20160120601 | ELECTROSURGICAL INSTRUMENT WITH SENSOR - An apparatus comprises a body, a shaft, an end effector and a sensor. The shaft extends distally from the body. The end effector is configured to receive energy from an energy source. The end effector comprises a first jaw and a second jaw. The second jaw is pivotable relative to the first jaw to transition the end effector from an open configuration to a closed configuration. In the closed configuration, the first jaw and second jaw define a closure gap. The sensor is operable to detect when the end effector is in the closed configuration. The sensor is also in communication with the energy source, such that the sensor is operable to communicate a signal to the energy source when the sensor detects the end effector in the closed configuration. | 05-05-2016 |
20160128774 | FLOW RATE MONITOR FOR FLUID COOLED MICROWAVE ABLATION PROBE - A microwave ablation system includes an antenna assembly configured to deliver microwave energy from a power source to tissue and a coolant source operably coupled to the power source and configured to selectively provide fluid to the antenna assembly via a fluid path. The system also includes a controller operably coupled to the power source and a sensor operably coupled to the fluid path and the controller. The sensor is configured to detect fluid flow through the fluid path and the controller is configured to control the energy source based on the detected fluid flow. | 05-12-2016 |
20160135885 | FLEXIBLE MICROWAVE CATHETERS FOR NATURAL OR ARTIFICIAL LUMENS - A coupler for coupling a flexible coaxial cable, a fluid cooling system and the outer sheath of a catheter, the coupler including a fluid coupler body having a fluid inlet, a fluid outlet, a bypass bulb, an outer sheath, and a fluid sealing system housed in the fluid coupler body. The fluid sealing system includes a distal sealing diaphragm and a proximal sealing diaphragm configured to form a fluid-tight seal with the fluid coupler body. | 05-19-2016 |
20160135886 | TISSUE ABLATION SYSTEM WITH ENERGY DISTRIBUTION - A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices. | 05-19-2016 |
20160135887 | HIGH-STRENGTH MICROWAVE ANTENNA ASSEMBLIES - Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna. | 05-19-2016 |
20160135888 | SYSTEMS, APPARATUS, METHODS AND PROCEDURES FOR THE NONINVASIVE TREATMENT OF TISSUE USING MICROWAVE ENERGY - The present invention is directed to systems, apparatus, methods and procedures for the noninvasive treatment of tissue, including treatment using microwave energy. In one embodiment of the invention a medical device and associated apparatus and procedures are used to treat dermatological conditions using, for example, microwave energy. | 05-19-2016 |
20160143691 | ABLATION SYSTEMS, PROBES, AND METHODS FOR REDUCING RADIATION FROM AN ABLATION PROBE INTO THE ENVIRONMENT - The ablation systems, ablation probes, and corresponding methods according to the present disclosure reduce or eliminate energy radiating from an ablation probe into the environment. Some ablation probes include a retractable sheath that shields at least the radiating portion of the ablation probe. The retractable sheath and/or the ablation probe may include conduits through which a fluid may flow to shield the radiating portion and to drive the retractable sheath to an extended state. Other ablation probes include apertures defined in the probe walls through which the fluid can flow to expand a balloon surrounding the radiating portion. Yet other ablation probes include a thermal indicator to indicate the temperature of the ablation probe to a user. The ablation systems include fluid circuits and associated mechanical controls for varying the contents and/or flow rate of the fluid provided to the radiating portion of the ablation probe. | 05-26-2016 |
20160151113 | ABLATION DEVICES WITH ADJUSTABLE RADIATING SECTION LENGTHS, ELECTROSURGICAL SYSTEMS INCLUDING SAME, AND METHODS OF ADJUSTING ABLATION FIELDS USING SAME | 06-02-2016 |
20160157934 | APPARATUS AND METHODS FOR THE TREATMENT OF TISSUE USING MICROWAVE ENERGY - Systems and methods for delivering microwave energy to skin are provided, such that a focal zone of destructive heat is generated in the upper sub-dermis, mid-dermis, and/or lower dermis. This microwave therapy may be used for hair removal, treatment of acne, skin tightening, treatment of toe nail fungus, or sweat reduction. According to one embodiment, a system can include a microwave applicator having a distal treatment portion that includes at least one microwave antenna, a cooling system, and vacuum features. In some embodiments, the interaction between incident waves transmitted from the microwave applicator and reflected waves may be used to generate a standing wave with a peak energy density in selected regions of the dermis. | 06-09-2016 |
20160166314 | ELECTROSURGICAL SNARE | 06-16-2016 |
20160175046 | MICROWAVE ABLATION SYSTEM WITH USER-CONTROLLED ABLATION SIZE AND METHOD OF USE | 06-23-2016 |
20160175047 | PERIPHERAL SWITCHING DEVICE FOR MICROWAVE ENERGY PLATFORMS | 06-23-2016 |
20160184014 | SYSTEM AND METHOD FOR CHEMICALLY COOLING AN ABLATION ANTENNA - A method of performing an ablation procedure includes inserting an antenna assembly into tissue and supplying energy thereto for application to tissue. The method also includes causing contact between a first material and at least one other material disposed within the antenna assembly to thermally regulate the antenna assembly. According to another embodiment, an ablation system includes an energy delivery assembly. A first chamber is defined within the energy delivery assembly and is configured to hold a first chemical. Another chamber is defined within the energy delivery assembly and is configured to hold at least one other chemical. The first chamber and the other chamber are configured to selectively and fluidly communicate with each other to cause contact between the first chemical and the at least one other chemical to cause an endothermic reaction and/or an exothermic reaction. | 06-30-2016 |
20160192986 | DUAL ANTENNA MICROWAVE RESECTION AND ABLATION DEVICE, SYSTEM AND METHOD OF USE | 07-07-2016 |
20160192987 | MICROWAVE ENERGY-DELIVERY DEVICE AND SYSTEM | 07-07-2016 |
20160199130 | Microwave Device For Tissue Ablation | 07-14-2016 |
20160249981 | MICROWAVE ANTENNA ASSEMBLY AND METHOD OF USING THE SAME | 09-01-2016 |
20160374747 | Ablation Device with Sensor - An electrosurgical device having a distal tip for creating a lesion on tissue includes a first electrode and a second electrode that are parallel for the delivery of RF energy to tissue. A sensor electrode is provided parallel to and spaced away from the first electrode a different distance than the second electrode. When the sensor electrode and at least one of the first and second electrodes are in contact with tissue. The electrosurgical device can perform at least one of the following: ablating tissue, and sensing at least one selected from the group of voltage, tissue impedance, electrical conduction, conduction time, conduction velocity, and signal phase angle. | 12-29-2016 |
20160374752 | ELECTROSURGICAL APPARATUS FOR GENERATING RADIOFREQUENCY ENERGY AND MICROWAVE ENERGY FOR DELIVERY INTO BIOLOGICAL TISSUE - An isolating circuit for electrosurgical generator arranged to produce radiofrequency (RF) energy and microwave energy for treating biological tissue. The generator has an RF channel and a microwave channel which are combined at signal combiner to enable the RF energy and microwave energy to be delivered into tissue along a common feed path. The isolating circuit comprises a tunable waveguide isolator at a junction between the microwave channel and signal combiner, and can include a capacitive structure between a ground conductor of the signal combiner and a conductive input section of the waveguide isolator to inhibit coupling of the RF energy and leakage of the microwave energy. The isolating circuit can combine into a single tunable unit all the necessary components to isolate the microwave and RF channels from one another whilst providing a high withstanding voltage. | 12-29-2016 |
20170231695 | SYSTEMS AND METHODS FOR DETERMINING THE STATUS OF A FLUID-COOLED MICROWAVE ABLATION SYSTEM | 08-17-2017 |
20170231696 | MICROWAVE ABLATION ANTENNA ASSEMBLIES | 08-17-2017 |