Class / Patent application number | Description | Number of patent applications / Date published |
606007000 | Angioplasty | 31 |
20080249515 | Interventional Devices and Methods For Laser Ablation - Laser catheter systems include catheters, mandrels, guidewires, and fiber optics configured to reduce or remove occlusions in a lumen or vessel of a patient. Rotation or translation of a mandrel, a guidewire, or a catheter can induce relative rotational or translational movement between the mandrel or guidewire and the catheter body, and can cause the distal end of the catheter body to rotate or traverse off of a central axis, such as a central longitudinal axis of a proximal or unbent portion of the catheter body, so as to cause ablation energy from the optical fibers to move in an arc or path. | 10-09-2008 |
20090198221 | APPARATUS AND METHODS FOR DIRECTIONAL DELIVERY OF LASER ENERGY - In some embodiments, without limitation, the invention comprises a catheter having an elongated housing with a channel disposed therein. A laser delivery member is movable and at least partially disposed within the channel. A ramp is disposed within the housing at an angle to its central axis and proximate to its distal end. The ramp is adapted to move the distal end of the laser delivery member outwardly from the central axis of the housing. A guidewire biases the distal end of the laser delivery member generally inwardly toward the central axis of the housing. In some embodiments, without limitation, the offset of the central axis of the tip of the laser delivery member from the central axis of the housing is determined by adjusting the extent to which the laser delivery member travels on the ramp, and disposition of the laser delivery member on the guidewire maintains the offset tip substantially parallel to the central axis of the housing. Thus, in accordance with the invention, the distal end of the laser delivery member may be biased in a desired direction or offset, permitting ablation of an area larger than the area of the distal end of the catheter. | 08-06-2009 |
20090221994 | Device and Method for Improved Vascular Laser Treatment - An improved treatment set and an improved method for endovascular laser treatments are described. The treatment en set comprises an introducer sheath or tip and an optical waveguide for allowing the treatment set to be guided within a blood vessel. The introducer sheath itself acts as the guide wire in one embodiment of the procedure. The introducer includes a means for protecting the tip of the optical fiber while the set is being positioned within the vessel and protecting the introducer tip from damaging the vessel. The method includes the steps of inserting the introducer/optical waveguide combination into a blood vessel to be treated, positioning the distal end of the introducer at a proper position in the blood vessel; advancing the optical fiber through a protective cap and/or means, and irradiating the blood vessel, preferably while withdrawing the treatment set toward the point of insertion. In another embodiment, the introducer/optical fiber combination includes a monorail groove within which a guidewire resides, wherein the optical fiber resides within the introducer and is advanced along the guidewire prior to treatment. The invention is advantageous in that it is quicker, as it requires fewer parts and fewer steps for effective treatment than do prior art devices and methods. | 09-03-2009 |
20090221995 | LASER-ASSISTED GUIDEWIRE HAVING A VARIABLE STIFFNESS SHAFT - Embodiments of the present invention comprise a fiber optic guidewire having a hypotube with a plurality of openings that provide variable stiffness and tracking characteristics between at least one proximal segment and one distal segment of the guidewire. In some embodiments, the guidewire further comprises a mandrel disposed within the hypotube, the mandrel cooperating with the optical fibers to permit the distal end of the hypotube to be shaped as desired by a user. Methods of manufacturing and using the guidewire are also disclosed. | 09-03-2009 |
20090240242 | Endoluminal Laser Ablation Device and Method for Treating Veins - An improved method and device is provided for safe and efficient low power density endoluminal treatment of venous insufficiency. One such device emits pulsed or continuous energy radially through an optical fiber end with a conical shaped tip for 360° radial emission. In some embodiments, a conical reflective surface is distally spaced opposite to and faces the emitting tip for enhancing radial emission efficiency by reflecting out any designed or remnant forwardly transmitted energy in radial directions. Other devices include flat emitting faces sealed within protective, radiation transparent covers. Laser radiation is transmitted at a wavelength and power such that is it substantially entirely absorbed within the blood vessel wall to sufficiently damage the intravascular endothelium and, in turn, achieve blood vessel closure. Because the energy is substantially entirely absorbed within the blood vessel wall, the need for a local anesthetic along the treatment area of the blood vessel may be substantially avoided. | 09-24-2009 |
20090254072 | Laser Catheter with an Adjustable Distal Tip for Increasing the Laser Target Zone - A laser catheter having a compliant balloon and a plurality of optical fibers extending from a base to a tip of the catheter for plaque removal is disclosed. The laser catheter may include a distal flush lumen extending to the tip. The compliant balloon may extend along a longitudinal axis of the laser catheter and may be positioned radially outward from an inner lumen. A plurality of optical fibers may be positioned between the inner lumen and an outer compliant material jacket. In another embodiment, the compliant balloon may be positioned eccentrically with respect to the inner lumen. The eccentrically positioned compliant balloon may further facilitate removal of plaque within arteries. | 10-08-2009 |
20090270846 | CATHETER, EXAMINATION SYSTEM AND THROMBUS REMOVING DEVICE - The position of a metal marker | 10-29-2009 |
20090292276 | SYSTEM AND METHOD OF USE FOR AGENT DELIVERY AND REVASCULARIZING OF GRAFTS AND VESSELS - A system and method for opening a lumen in an occluded blood vessel, e.g., a coronary bypass graft, of a living being. The system comprises an atherectomy catheter having a working head, e.g., a rotary impacting impeller, and a debris extraction sub-system. The atherectomy catheter is located within a guide catheter. The working head is arranged to operate on, e.g., impact, the occlusive material in the occluded vessel to open a lumen therein, whereupon some debris may be produced. The debris extraction sub-system introduces an infusate liquid at a first flow rate adjacent the working head and withdraws that liquid and some blood at a second and higher flow rate, through the guide catheter to create a differential flow adjacent the working head, whereupon the debris is withdrawn in the infusate liquid and blood for collection outside the being's body. The introduction of the infusate liquid may also be used to establish an unbalanced flow adjacent the working head to enable the atherectomy catheter to be steered hydrodynamically. A guide wire having an inflatable balloon on its distal end may be used with the atherectomy catheter to block the flow of debris distally, while enabling distal tissues to be perfused with an oxygenating liquid. At least one flow control port may be provided in the guide catheter to prevent collapse of the vessel being revascularized. A cradle is provided to fix the guide catheter and guide wire in position within the body of the being while enabling the atherectomy catheter to be advanced along the guide wire and through the guide catheter. | 11-26-2009 |
20100063488 | WIRE GUIDED THROMBECTOMY DEVICE - A medical device for removing a thrombus from a blood vessel and a process thereof is presented. The device comprises an outer sheath with a plurality of lumens. A wire guide inserted through one of the lumens is used to place the device proximate to a thrombus. An optical fiber placed through a second lumen uses laser input to ablate the thrombus in the proximal portion of the second lumen near its proximal end. A vacuum coupled to the distal end of the second lumen is used to remove any ablated residual material. The second lumen may be pivoted around the first lumen to reposition the second lumen proximate to an area of the thrombus that has not yet been ablated. | 03-11-2010 |
20100152717 | ECCENTRIC BALLOON LASER CATHETER - Various embodiments of an eccentric balloon catheter are disclosed. In some embodiments, an eccentric balloon catheter includes an eccentrically positioned guidewire tube, with an interior lumen, that extends at least a portion of the length of the catheter body. Optical fibers may extend the length of the catheter body and may also be eccentrically positioned within the catheter body. An inflatable balloon may be positioned within a window within the catheter body near the distal end of the catheter. When inflated, the balloon and catheter may slide relative to one another. When used within a vessel, an inflated balloon may press against a vessel wall and bias the catheter toward an opposite vessel wall. | 06-17-2010 |
20100160903 | PROCESS AND SYSTEM FOR TREATING A VASCULAR OCCLUSION OR OTHER ENDOLUMINAL STRUCTURE - A process and instruments for diminishing an undesired endoluminal structure present at a treatment site in a mammalian treatment subject. The endoluminal can be or include a vascular occlusion, a biofilm or another undesired biological structure. The process can include applying mechanical shockwaves to the endoluminal structure and the endoluminal structure absorbing the applied mechanical shockwaves and becoming diminished, dispersed or weakened. The shockwaves can be generated by pulsed laser energy delivered to an ionizable target via an optical fiber. | 06-24-2010 |
20110022038 | Device for Treating Occlusions, and Method for Treating Occluded Vessels - The present invention relates to devices and procedures for medical care and pertains in particular to medical devices and techniques for treatment of occlusions, particularly chronic total occlusions in vessels, particularly blood vessels of human or animal subjects. | 01-27-2011 |
20130023865 | Imaging and Eccentric Atherosclerotic Material Laser Remodeling and/or Ablation Catheter - Devices, systems, and methods for treating atherosclerotic lesions and other disease states, particularly for treatment of vulnerable plaques, can incorporate optical coherence tomography or other imaging techniques which allow a structure and location of an eccentric plaque to be characterized. Remodeling and/or ablative laser energy can then be selectively and automatically directed to the appropriate plaque structures, often without imposing mechanical trauma to the entire circumference of the lumen wall. | 01-24-2013 |
20130096545 | SMALL FLEXIBLE LIQUID CORE CATHETER FOR LASER ABLATION IN BODY LUMENS AND METHODS FOR USE - Embodiments relate to the design and use of a low profile ablation catheter with a liquid core for use in laser ablation removal of arterial plaque blockages to restore blood flow. | 04-18-2013 |
20130253486 | EXPANDABLE LASER CATHETER - Expandable laser catheters for utilizing laser energy to remove obstructions from body passages are described. In one embodiment, the laser catheter includes a shaftway having a distal end including a flexible portion configured in a series of radial folds. Multiple optical fibers, configured to transmit laser energy, extend along the shaftway and are attached to the flexible portion. An inflatable, ring-shaped balloon is attached to the catheter within the flexible portion. In use, the catheter is inserted into a body passage such as an artery, and advanced until the distal end is adjacent to an obstruction. The balloon is inflated to expand the flexible portion and to bring the optical fibers nearer the inner wall of the body passage. Laser energy is directed by the optical fibers toward targeted regions of the obstruction. As the catheter is advanced and the process repeated, a core is formed from the obstruction and contained within the flexible portion. The flexible portion is then contracted to hold the core, and the core is removed from the body passage by withdrawing the catheter. | 09-26-2013 |
20140031800 | HYBRID CATHETER FOR VASCULAR INTERVENTION - A catheter for debulking of an undesired deposit from an inner surface of at least one of a blood vessel wall and a stent located in a blood vessel, the catheter having a tip section comprising: circumferentially-directed laser optics; and a circular-action cutter, wherein said circumferentially-directed laser optics is configured to transmit laser radiation for modifying an area of the undesired deposit thereby preparing said area for penetration of said cutter, wherein said cutter is configured to cut through said modified area and thereby debulk at least a part of the undesired deposit. In addition, a catheter for pacemaker and ICD (Implantable Cardioverter Defibrillator) lead extraction is disclosed. | 01-30-2014 |
20140088575 | DEVICES FOR EFFECTIVE AND UNIFORM DENERVATION OF NERVES AND UNIQUE METHODS OF USE THEREOF - Apparatus for delivering laser energy suitable for denervation, such as renal denervation and the like, comprises an optical fiber inside a cannula and defining a channel therebetween for delivery of a liquid to cool and clean the tip of the optical fiber and to cool tissue subjected to laser irradiation, while the apparatus is Stationed, Moved, Rotated and or Swept during the emission of laser energy. | 03-27-2014 |
20140114298 | RAPID EXCHANGE BIAS LASER CATHETER DESIGN - Embodiments of a balloon biasing laser catheter are provided. In some embodiments, the laser catheter may include a distal tip that extends from the distal end of the catheter from a point near the light guide aperture. The distal tip may be disposed at the periphery of the catheter. In some embodiments, a balloon may be disposed between the light guide aperture and the distal tip, such that the a light guide extending from the aperture may be disposed proximate with the distal tip having the balloon in between. A retaining wire may be coupled with the distal tip and slidably coupled with the light guide. The retaining wire may keep the light guide biased relatively parallel with the distal tip and/or the catheter body when the balloon is inflated. The light guide may include a guidewire lumen the extends to the distal end of the distal tip. | 04-24-2014 |
20140188094 | FOCUSED NEAR-INFRARED LASERS FOR NON-INVASIVE VARICOSE VEINS AND OTHER THERMAL COAGULATION OR OCCLUSION PROCEDURES - Focused infrared light may be used in a non-invasive varicose vein treatment procedure with infrared light from a plurality of laser diodes that are combined in a multiplexer and coupled to a multi-mode fiber coupled to another fiber or fiber bundle that delivers the light to a lens/mirror assembly for application in the non-invasive procedures. The wavelength of light may be selected near 980 nm, 1210 nm, or 1720 nm to achieve a desired penetration depth and/or for absorption in a particular tissue type or water. Wavelengths near approximately 1100 nm, 1310 nm or 1650 nm may be advantageous for non-invasive procedures through the skin. The light may be focused with lower intensity on the skin or outer tissue to reduce collateral damage and higher intensity at a desired depth to induce thermal coagulation or occlusion at depths of about 1-2 mm or more. Surface cooling techniques, such as cryogenic sprays or contact cooling may be provided. | 07-03-2014 |
20140194861 | BIASING LASER CATHETER: MONORAIL DESIGN - In some embodiments, without limitation, the invention comprises a catheter having an elongated housing with a channel disposed therein. A laser delivery member is movable and at least partially disposed within the channel. A ramp is disposed within the housing at an angle to its central axis and proximate to its distal end. The ramp is adapted to move the distal end of the laser delivery member outwardly from the central axis of the housing. A guidewire biases the distal end of the laser delivery member generally inwardly toward the central axis of the housing. In some embodiments, without limitation, the offset of the central axis of the tip of the laser delivery member from the central axis of the housing is determined by adjusting the extent to which the laser delivery member travels on the ramp, and disposition of the laser delivery member on the guidewire maintains the offset tip substantially parallel to the central axis of the housing. Thus, in accordance with the invention, the distal end of the laser delivery member may be biased in a desired direction or offset, permitting ablation of an area larger than the area of the distal end of the catheter. | 07-10-2014 |
20140249517 | METHOD AND APPARATUS FOR ELIMINATING ATHEROSCLEROSIS FROM A REGION OF THE ARTERIAL TREE - The present invetion provides a method and apparatus for elimination of atherosclerosis from an artery. According to the present invetion the diseased artery is approached from external side and ablate is approached in such a way that incision/cut pass through tunica adventitia and tunica media of the diseased artery and a fibrous capsule of the atherselerosis. On ablation/incision, the contents plaques are exposed to the natural defense of the body and are destroyed by the natural defense system. The plaque escaping out of the artery on the external surface of the artery may be wiped or washed away with saline during or after the ablation procedure. Then, natural healing of artery is allowed which eliminates atherosclerosis thoroughly. | 09-04-2014 |
20140276682 | Laser Catheter with Helical Internal Lumen - Catheters for ablation and removal of occlusions from blood vessels are provided. Laser cutting systems and mechanical cutting systems are provided in catheter devices, the cutting systems operable to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. A helical or partially-helical inner surface structure is provided in the catheter, the structure operable to remove or translate dislodged material(s). | 09-18-2014 |
20140276683 | Laser Ablation Catheter - A system and devices for ablation and removal of occlusions from blood vessels is provided. Laser cutting systems and mechanical cutting systems are provided in catheter devices, the cutting systems operable to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Catheter systems comprise distal end features adapted to cut and remove at least portions of an occlusion that generally correspond to dimensions of an inner lumen of a catheter. | 09-18-2014 |
20140276684 | ATHERECTOMY METHODS USING COREGISTERED SETS OF DATA - The present invention generally relates to methods for removing plaque from a vessel. The method can involve obtaining a first image of a blood vessel using a first imaging modality, obtaining a second image of the blood vessel using a second imaging modality, and coregistering the first and second images, thereby generating a coregistered data set. The method can further involve inserting an atherectomy catheter into the blood vessel and removing plaque from the vessel with the atherectomy catheter based on plaque identified in the coregistered set of data. | 09-18-2014 |
20140288541 | LESION TREATMENT DEVICE AND METHODS FOR TREATING LESIONS - Tissue and vessel treatment devices and respective methods are provided. Devices comprise a flexible treatment layer that comprises a plurality of operable elements configured to be activated to apply the treatment to the obstruction upon bending of the flexible treatment layer beyond a specified curvature threshold and to be de-activated upon a specified decrease of the bending. The treatment layer may comprise optical fiber(s) with the operable elements as emission regions that emit electromagnetic radiation from the core upon bending the optical fiber beyond a specified bending threshold. Devices may be configured as vessel sealing tips for surgical forceps, in which the treatment layer is configured to yield vessel welding and vessel cutting effects. | 09-25-2014 |
20150289936 | ARCH SHAPED LASER CATHETER - Devices, methods and systems for removing unwanted tissue from within a patient's vasculature system are provided. Specifically, a laser ablation catheter having a tip with an open, arched-shaped cross section is described. The cross section of the tip enhances the catheter's ability to ablate, separate, and/or dilate the various layers within a patient's vasculature, thereby facilitating the removal undesirable lesions and fibrous tissue within a patient's vasculature. | 10-15-2015 |
20150342629 | MATERIAL REMOVAL CATHETER HAVING AN EXPANDABLE DISTAL END - Catheters for ablation and removal of occlusions from blood vessels are provided. Laser cutting systems and mechanical cutting systems are provided in catheter devices, the cutting systems operable to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Catheters include expandable distal ends to facilitate, in some cases, relatively high bodily material removal rates compared to other devices. | 12-03-2015 |
20150342681 | SEGMENTED BALLOON LASER ABLATION CATHETER - The present disclosure relates generally to medical devices, and, in particular, to a system for improved intraluminal positioning of a laser ablation catheter during the removal of material resulting from therapeutic treatment of occlusions within blood vessels. Given the challenges associated with delivering effective therapy for vascular blockages, there remains a need to provide a catheter that can maintain a consistent intraluminal position during the treatment, despite irregularities and inconsistencies within the vessel. | 12-03-2015 |
20160120605 | DEVICE AND METHOD OF ABLATIVE CUTTING WITH HELICAL TIP - Catheter devices for ablation and removal of occlusions from blood vessels and methods of using the same are provided. Catheter devices are useful to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Distal features of the catheter devices comprise arrangements of laser ablative or mechanical cutting features that generally provide enhanced surface areas and cutting functions. Spiral or helical arrangements are provided to aid in cutting operations. | 05-05-2016 |
20160149370 | LASER SYSTEM AND METHOD FOR CONTROLLING THE LASER PULSE SHAPE - A laser system for medical treatment is disclosed which comprises a pump, wherein the laser system is adapted to be operated in pulsed operation so that at least one laser pulse of a temporally limited pulse duration (T | 05-26-2016 |
20190142453 | DEVICES AND METHODS FOR INTRABODY SURGERY | 05-16-2019 |