Class / Patent application number | Description | Number of patent applications / Date published |
600381000 | Electrode in artery or blood vessel | 32 |
20090024016 | Continuous Measurement and Mapping of Physiological Data - A catheter has a plurality of sensors and electrodes, wherein the sensors are arranged alternately and spaced apart from each other. A system for continuous measurement and mapping of physiological data may use such a catheter with a coupling unit for insulated coupling of the plurality of sensors with a measurement unit and a mapping unit for mapping values received from the sensors to a predefined matrix. | 01-22-2009 |
20100125189 | SYSTEMS AND METHODS FOR CATHETER STABILITY - The present invention provides systems and methods for stabilizing catheters, such as decapolar coronary sinus catheters in veins. In particular, the present invention provides fixation elements for improved tissue contact and stability. | 05-20-2010 |
20110105877 | APPARATUS AND METHOD FOR DETECTING DISCONNECTION OF AN INTRAVASCULAR ACCESS DEVICE - An apparatus and method are disclosed for detecting the disconnection of a vascular access device such as a needle, cannula or catheter from a blood vessel or vascular graft segment. A pair of electrodes is placed in direct contact with fluid or blood in fluid communication with the vascular segment. In one embodiment, the electrodes are incorporated into a pair of connectors connecting arterial and venous catheters to arterial and venous tubes leading to and from an extracorporeal blood flow apparatus. Wires leading from the electrodes to a detecting circuit can be incorporated into a pair of double lumen arterial and venous tubes connecting the blood flow apparatus to the blood vessel or vascular graft. The detecting circuit is configured to provide a low-voltage alternating current signal to the electrodes to measure the electrical resistance between the electrodes, minimizing both the duration and amount of current being delivered. Detection of an increase in electrical resistance between the electrodes exceeding a pre-determined threshold value may be used to indicate a possible disconnection of the vascular access device. | 05-05-2011 |
20110178383 | DEVICES AND SYSTEMS FOR DETERMINING FRACTIONAL FLOW RESERVE - Devices and systems for determining fractional flow reserve. In at least one embodiment of a device for determining fractional flow reserve of a fluid within a luminal organ, the device comprises an elongated body sized and shaped to fit within a luminal organ, and at least two sensors positioned along the elongated body a predetermined distance from one another, wherein the device is operable to detect a first fluid with a first parameter having a first value using at least one of the at least two sensors when the device is positioned within the luminal organ, and wherein the device is further operable to detect a second fluid having a second parameter, wherein the second parameter of the second fluid has a second value different from the first value, upon introduction of the second fluid within the luminal organ at or near the at least two sensors, and wherein the device is further operable to determine fractional flow reserve when the device is positioned within the luminal organ at or near a stenosis, wherein the fractional flow reserve is based upon a flow velocity obtained by the device, a mean aortic pressure within the luminal organ, and at least one cross-sectional area at or near the stenosis. | 07-21-2011 |
20120041295 | CATHETER WITH THIN FILM PRESSURE SENSING DISTAL TIP - A mapping and ablation catheter has contact force sensing capabilities at a distal end. In one embodiment, the catheter includes a catheter body, a deflectable section, and a tip distal tip section which has a tip electrode with a thin-film pressure sensor that is adapted to detect a force vector applied to the tip electrode. The thin-film pressure sensor includes two opposing flexible and thin support members containing a pressure-sensitive material therebetween whose resistivity changes as a result of pressure and is detected by trace electrode intersections supported on interfacing surfaces of the flexible and thin support members. Used with a stop member having a conforming shape against which the thin-film pressure sensor abuts when a force vector is applied to the tip electrode, the pressure sensor can have a 2-D, radially-symmetrical shape, e.g., a disc or ring configuration, or a 3-D, radially-symmetrical shape, e.g., a conical configuration. | 02-16-2012 |
20120078078 | MEANS FOR SECURING A CATHETER INTO A VESSEL - An electrophysiology catheter, e.g., a coronary sinus catheter, for insertion into a cardiac vessel, such as the coronary sinus, includes a handle and a catheter shaft coupled at one end to the handle. The catheter shaft has a distal end and an anchor is associated with the catheter shaft and is movable between a deployed position and a collapsed position. In the deployed position, the anchor extends radially outward from an outer surface of the catheter shaft for contacting a wall and temporarily anchoring the catheter shaft within the coronary sinus. The catheter also includes an actuator for causing deployment and collapsing of the anchor upon manipulation of the actuator. | 03-29-2012 |
20120289808 | SENSOR GUIDE WIRE DEVICE AND SYSTEM INCLUDING A SENSOR GUIDE WIRE DEVICE - A sensor guide wire device ( | 11-15-2012 |
20120316419 | MULTIMODAL CATHETER - Catheter based system for providing functional and morphological characterization of arteries, comprising a catheter ( | 12-13-2012 |
20130018247 | INTRAVASCULAR ELECTRODES AND ANCHORING DEVICES FOR TRANSVASCULAR STIMULATION - An intravascular electrode device for use in neuromodulation includes an anchor expandable from a radially compressed position to a radially expanded position. A lead extends from the anchor and has at least one conductor extending through it. A flex circuit is coupled to the anchor and comprises a flexible insulative substrate, a plurality of electrodes carried by the substrate, and a plurality of conductive traces carried by the substrate, each trace electrically coupled to an electrode and a conductor. Expansion of the anchor within a blood vessel biases the electrodes into contact with the surrounding blood vessel wall. An exemplary anchor includes a first portion having expansion forces sufficient to bias the electrodes against the vessel wall for mapping and chronic stimulation, and a second portion having greater radial expansion forces sufficient to chronically engage the vessel wall once an optimal electrode location has been selected. | 01-17-2013 |
20130018248 | Devices and methods for ECG guided vascular access - A new device and a method are provided which allow for making an electrical connection between an electrolyte and an electric wire. A new connector is provided which allows to be used by a single sterile operator. A new valved device is provided which allows for maintaining the integrity and the pressure of a saline column in the central venous line. A new device is provided which allows for automatically maintaining a continuous flush of a saline syringe in order to allow for keeping the valves of central venous lines open and capable of electric conduction. A new syringe is provided which allows for simultaneous electrical connection between the fluid in the syringe and an electrical wire. Several new methods are provided for making an electrical connection to a central venous line during and after the catheter placement procedure. | 01-17-2013 |
20130041244 | IMPLANTABLE DEVICE FOR DETECTING A VESSEL WALL EXPANSION - An implantable device is described for detecting an expansion which is an elastic deformation of an intracorporeal vessel wall. The device comprises a support structure which contains dielectric polymer, has surface elasticity and can be applied directly or indirectly to the vessel wall, which provides at least one capacitive electrode arrangement, of which the assignable electrical capacitance can be influenced by an elastic deformation of the support structure. The electrode arrangement includes at least two electrodes each consisting of an electrically conductive polymer. The electrodes each define at least one side an intermediate space that influences the electrical capacitance of the electrode arrangement. The space is filled with the dielectric polymer of the support structure. | 02-14-2013 |
20130079617 | MEASUREMENT OF PATIENT PHYSIOLOGICAL PARAMETERS - A method of determining one or more physiological parameter of a patient by providing a plurality of implantable electrodes proximate a blood vessel of the patient, applying a measurement signal through the plurality of electrodes, the measurement signal having a known parameter, obtaining a resultant signal through the plurality of electrodes, the resultant signal having a resultant parameter, calculating vascular impedance based on the measurement signal and the resultant signal, and calculating a physiological parameter based on the vascular impedance. In some embodiments, the physiological parameter is utilized to modify a therapy signal controlling therapy delivered to the patient. | 03-28-2013 |
20130096409 | DEVICE AND METHODS FOR MEASURING AND TREATING AN ANATOMICAL STRUCTURE - A sensor delivery device and methods of using the device are provided, wherein the sensor delivery device includes a sensor that is adapted to obtain a measurement that can be used to calculate cross-sectional area of a surrounding anatomical structure. In certain cases, the sensor is an electrode arrangement, wherein the electrode arrangement generates a current and measures voltage resulting from the current. The voltage measurement is then used to calculate conductivity of fluid in the surrounding anatomical structure and thus cross-sectional area. | 04-18-2013 |
20130165759 | SYSTEMS AND METHODS FOR MAKING AND USING MEDICAL ABLATION SYSTEMS HAVING MAPPING CATHETERS WITH IMPROVED ANCHORING ABILITY - A mapping catheter includes an elongated body for inserting into patient vasculature. A distal end of the elongated body includes a distal portion that includes a plurality of electrodes, a proximal portion disposed proximal to the distal portion, and a reduced-dimension portion disposed between the proximal and distal portions. The distal end is formed, at least in part, from a memory shape material that bends into a preformed shape upon release from a confined space. The preformed shape includes a first loop formed, at least in part, by the distal portion. The first loop is transverse to a longitudinal axis of the proximal portion. The reduced-dimension portion is configured and arranged to bend such that the reduced-dimension section advances distally through the first loop when the first loop is held in a fixed position and a force is applied distally along the longitudinal axis of the proximal portion. | 06-27-2013 |
20130184553 | SINGLE INJECTION METHODS FOR OBTAINING CONDUCTANCE MEASUREMENTS WITHIN LUMINAL ORGANS USING IMPEDANCE DEVICES - Single injection methods for obtaining conductance measurements within luminal organs using impedance devices. In at least one method embodiment, the method is performed by introducing at least part of an impedance device into a mammalian luminal organ, the impedance device comprising an elongated body and a detector positioned along the elongated body, obtaining conductance measurements indicative of a fluid native to the mammalian luminal organ and indicative of a fluid injection while the detector is present within and outside of the lumen of the outer sheath, and calculating a size parameter of the mammalian luminal organ based in part upon some of the obtained conductance measurements. | 07-18-2013 |
20130225965 | CATHETER BALLOON HAVING STRETCHABLE INTEGRATED CIRCUITRY AND SENSOR ARRAY - A system, device and method are presented for utilizing stretchable active integrated circuits with inflatable bodies. The invention allows for such operative features to come into direct contact with body structures, such as the inner wall of a lumen. Such direct contact increases accuracy of measurement and delivery of therapy. | 08-29-2013 |
20140058240 | IMPLANTABLE MEDICAL DEVICE ELECTRODE ASSEMBLY - An implantable medical device (IMD) includes an electrode that forms a first snap-fit attachment area and an insulator that forms a through-hole, a second snap-fit attachment area and a third snap-fit attachment area. The second snap-fit attachment area mates with the first snap-fit attachment area of the electrode. The IMD further includes a body including an elongated conductive housing and a feedthrough wire extending therefrom. The body forms a fourth snap-fit attachment area on one end that mates with the third snap-fit attachment area of the insulator such that the feedthrough wire extends through the through-hole of the insulator. The housing encloses at least one of a battery, a sensor, and an electronic circuit. The insulator functions to electrically isolate the electrode from the housing of the body. | 02-27-2014 |
20140107455 | IMPLANTABLE DETECTION/STIMULATION MULTIPOLOR MICROLEAD - Leads for use with implantable medical devices are provided. One microlead is intended to be implanted in the venous, arterial, or lymphatic networks. Its diameter may be at most equal to 1.5 French (0.5 mm), and it may include a plurality of micro-cables each including: an electrically conductive core cable for connection to one pole of a multipolar generator of an active implantable medical device, and a polymer insulation layer surrounding the core cable. At least one exposed area may be formed in the insulation layer to form a detection/stimulation electrode. | 04-17-2014 |
20140107456 | ATRAUMATIC DETECTION/STIMULATION MICROLEAD - An atraumatic detection/stimulation lead is disclosed. The lead includes at least one microcable having a core cable comprising a plurality of elementary metal strands. One of the microcables has provided at its distal end an atraumatic protection device. The atraumatic protection device includes a protective coating on the distal ends of the elementary strands of the microcable, and the protective coating is covered by a protective cap of deformable material. The protective cap may be a conical distal end adapted to deform and axially flatten out. The microcable may have an overall diameter less than or equal to 1.5 French (0.50 mm). | 04-17-2014 |
20140142408 | Basket catheter having multiple electrodes - Embodiments of the present invention provide a catheter that comprises an elongated catheter body ( | 05-22-2014 |
20140180053 | MEANS FOR SECURING A CATHETER INTO A VESSEL - An electrophysiology catheter, e.g., a coronary sinus catheter, for insertion into a cardiac vessel, such as the coronary sinus, includes a handle and a catheter shaft coupled at one end to the handle. The catheter shaft has a distal end and an anchor is associated with the catheter shaft and is movable between a deployed position and a collapsed position. In the deployed position, the anchor extends radially outward from an outer surface of the catheter shaft for contacting a wall and temporarily anchoring the catheter shaft within the coronary sinus. The catheter also includes an actuator for causing deployment and collapsing of the anchor upon manipulation of the actuator. | 06-26-2014 |
20140187895 | DELIVERY SYSTEM FOR DELIVERING A MEDICAL DEVICE TO A LOCATION WITHIN A PATIENT'S BODY - Devices, systems and methods are provided for deployment of one or more functional devices, such as therapeutic and/or diagnostic medical devices and/or positioning devices, at various locations relative to a defined operative path. The devices, systems, and methods can include a guide system and a positioning element. The guide system defines the operative path when deployed within a patient's body. The positioning element cooperates with the guide system to define one or more positions relative the defined operative path from which the one or more functional devices are deployed. The present inventions allow for the accurate and reliable placement of the one or more functional devices at the one or more positions relative the operative path. In one embodiment, the functional device is an ablation device adapted to ablate cardiac tissue for the treatment of cardiac arrhythmias, such as atrial fibrillation. | 07-03-2014 |
20140221805 | MAPPING SYMPATHETIC NERVE DISTRIBUTION FOR RENAL ABLATION AND CATHETERS FOR SAME - This invention provides methods for mapping and ablating renal nerves to treat disease caused by systemic renal nerve hyperactivity, e.g. hypertension, heart failure, renal failure and diabetes. Also provided are catheters for performing the mapping and ablating functions. | 08-07-2014 |
20150051467 | IMPLANTABLE DEVICE AND METHOD FOR MONITORING VENOUS DIAMETER - An implantable medical device system and associated method receive a signal from an implantable sensor operatively positioned relative to a vein, the signal being responsive to changes in a diameter of the vein. A diameter of the vein is determined in response to the sensor signal and used in estimating central venous pressure (CVP). | 02-19-2015 |
20150119674 | INTRAVASCULAR CATHETER WITH PERI-VASCULAR NERVE ACTIVITY SENSORS - An intravascular catheter for peri-vascular nerve activity sensing or measurement includes multiple needles advanced through supported guide tubes (needle guiding elements) which expand with open ends around a central axis to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the perivascular space. The system also may include means to limit and/or adjust the depth of penetration of the needles. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. The addition of an injection lumen at the proximal end of the catheter and openings in the needles adds the functionality of ablative fluid injection into the perivascular space for an integrated nerve sending and ablation capability. | 04-30-2015 |
20150148645 | DETECTION/STIMULATION MICROLEAD IMPLANTABLE IN A VESSEL OF THE VENOUS, ARTERIAL OR LYMPHATIC NETWORK - A microlead has a distal active portion formed by a microcable including an electrically conductive core coated with an insulation layer, with a plurality of exposed areas forming the stimulation electrodes. The microcable has a three-dimensional preshape inscribed in a cylindrical envelope volume so as to match the target vessel wall. The microcable includes a plurality of exposed areas regularly distributed over the circumference of the cylindrical envelope volume considered in axial projection, the exposed zones extending only over an angular sector of the microcable considered in cross section, said angular sector facing the outside of the envelope volume of the preshape. | 05-28-2015 |
20150297139 | SYSTEMS AND METHODS FOR REGULATING ORGAN AND/OR TUMOR GROWTH RATES, FUNCTION, AND/OR DEVELOPMENT - A system for controlled neuromodulation procedures is disclosed. A system for controlled micro ablation procedures is disclosed. Systems and methods for imaging, monitoring, stimulating, and/or ablating neurological structures coupled to one or more organs of the lower urinary tract (LUT) are disclosed. Such processes may be used to alter the hormonal secretions from one or more organs, to modulate the growth of an organ, alter the growth rate or rate of perineural invasion of a tumor, or the like. In particular such processes may be used to slow, halt and/or reverse the growth of a prostate gland or a prostate tumor. | 10-22-2015 |
20150374261 | Apparatus and Method for Catheter Navigation and Tip Location - Devices and methods obtain and use endovascular electrograms in a number of clinical applications and settings. In one embodiment, methods for triggering analysis of an endovascular ECG waveform are based on the detection of a peak in a skin-based ECG waveform in order to determine a location of an indwelling medical device, such as a catheter. In another embodiment, the position of a catheter or other medical device within the vasculature can be determined by analysis of the energy profile of a detected P-wave. In yet other embodiments, magnetic connecting devices are used for establishing an operable connection through a sterile field. | 12-31-2015 |
20160000345 | MONITORING DEVICE AND MONITORING DEVICE KIT - A monitoring device includes an expansion body that is delivered into a vessel, and that expands at a predetermined position, and an electrode that is attached to the expansion body, and that detects neural activities of a nerve located outside the vessel by coming into contact with an inner wall of the vessel when the expansion body expands. | 01-07-2016 |
20160095535 | Systems and Methods for Evaluating Neuromodulation Therapy Via Hemodynamic Responses - Systems and methods for evaluating neuromodulation via hemodynamic responses are disclosed herein. A system configured in accordance with embodiments of the present technology can include, for example, a neuromodulation catheter comprising an elongated shaft having a distal portion, and a plurality of electrodes spaced along a distal portion. The system can further include a controller communicatively coupled to the electrodes. The controller can be configured to apply first and second stimuli at and/or proximate to a target site within a blood vessel before and after delivering neuromodulation energy to the target site, and detect, via at least one of the electrodes, vessel impedance resulting from the first and second stimuli to determine a baseline impedance and a post-neuromodulation impedance. The controller can further be configured to assess the efficacy of the neuromodulation based, at least in part, on a comparison of the baseline impedance and the post-neuromodulation impedance. | 04-07-2016 |
20160143560 | APPARATUS AND METHOD FOR ENDOVASCULAR DEVICE GUIDING AND POSITIONING USING PHYSIOLOGICAL PARAMETERS - An endovascular navigation system and method are disclosed. The endovascular navigation system includes an elongate flexible member configured to access the venous vasculature of a patient, a endovascular electrogram lead disposed at a distal end of the elongate flexible member and configured to sense an endovascular electrogram signal of the venous vasculature of the patient, a processor and an output device. The processor is configured to receive the endovascular electrogram signal, to determine a peak amplitude of a P-wave in the endovascular electrogram signal, and to determine that the position of the distal end of the elongate flexible member is within a predetermined structure within the venous vasculature of the patient. The output device is configured to display a visual indication that the distal end of the elongate flexible member is within the predetermined structure within the venous vasculature of the patient, where the visual indication is different from the endovascular electrogram signal of the venous vasculature of the patient. | 05-26-2016 |
20160143689 | CATHETER WITH SOFT DISTAL TIP FOR MAPPING AND ABLATING TUBULAR REGION - A catheter includes an elongated body having a longitudinal axis, a distal assembly distal the elongated body, the distal assembly having a tapered helical form comprising a larger, electrode-carrying proximal loop and a smaller, softer distal loop, and a shape-memory support member extending through at least the proximal loop. For example, the helical loop subtends at least about 720 radial degrees, with the proximal loop subtending about 360 radial degrees, and the distal loop subtending about 360 radial degrees. The softer distal loop with a straight distal end atraumatically guides the distal assembly into a tubular region so that the larger proximal loop can sit on the ostium of the tubular region with improved electrode and tissue contact. | 05-26-2016 |