Patent application number | Description | Published |
20090018599 | Cardiac Stimulation Using Leadless Electrode Assemblies - An implantable cardiac tissue excitation system includes an implantable pacing controller unit with a pulse generation circuit. The system also includes a lead with a lead body extending between a proximal lead end attachable to the pacing controller unit and a distal lead end configured to be implanted within a heart. A lead conductor extends within the lead body. The system also includes a transmitter assembly located near the distal lead end that is electrically connected to the pulse generation circuit through the lead conductor to wirelessly transmit pacing control information and pacing energy. The system also includes a leadless electrode assembly configured to be implanted within the heart that includes a receiver to receive the wireless transmission, a charge storage unit to store the charge energy, and an electrical stimulation circuit to deliver an electrical stimulus to cardiac tissue using the pacing control information and the charge energy. | 01-15-2009 |
20090216267 | CLOSURE DEVICE WITH RAPIDLY DISSOLVING ANCHOR - Closure devices with a rapidly dissolving anchor, systems delivering closure devices, and methods for making and using the same. An example closure device for closing an opening in a body lumen may include a plug, a rapidly dissolving anchor, and a suture coupling the plug to the anchor. The rapidly dissolving anchor may be configured to dissolve within the body lumen within about 30 days or less. At least a portion of the plug may be disposed adjacent an exterior surface of the body lumen. At least a portion of the rapidly dissolving anchor may be disposed within the body lumen. | 08-27-2009 |
20100217374 | Torqueable Balloon Catheter - An illustrative balloon catheter is disclosed. The balloon catheter may include an elongate shaft including a proximal section, a midshaft section, and a distal section. In some embodiments, the midshaft section may include a braid encapsulated in a polymer material. Additionally or alternatively, the midshaft section may include a thermoset polymer material. Additionally, in some cases, the distal section may include a distal outer tubular member and a distal inner tubular member, one or more of which may include a polymer material and, in some cases, a braid. Additionally, some example proximal section may include a metal polymer composite material. | 08-26-2010 |
20120029512 | BALLOON WITH SURFACE ELECTRODES AND INTEGRAL COOLING FOR RENAL NERVE ABLATION - A catheter arrangement includes a flexible shaft and a balloon disposed at a distal end of the shaft and configurable for deployment within a target vessel of the body, such as a renal artery. Ablation electrodes, supported by a balloon wall, are arranged in a predefined pattern. The electrodes deliver electrical energy sufficient to ablate target tissue, such as perivascular renal nerves, proximate the target vessel wall when the balloon is in a deployed configuration. A cooling arrangement is encompassed at least in part by the balloon and provides cooling to at least the electrodes during ablation such that a location at which steady-state ablative heating begins is translated from an electrode-tissue interface at the target vessel wall to a location a predetermined distance away from the electrode-tissue interface. | 02-02-2012 |
20120123258 | RENAL DENERVATION CATHETER WITH RF ELECTRODE AND INTEGRAL CONTRAST DYE INJECTION ARRANGEMENT - A catheter includes a flexible braided shaft having a length sufficient to access a target vessel of the body, such as a renal artery. An electrode at the catheter's distal tip is configured to ablate extravascular target tissue, such as perivascular renal nerve tissue. An electrical conductor coupled to the electrode extends along a first lumen of the shaft. A second lumen of the shaft terminates at a port arrangement on an outer surface of the shaft near the electrode. The second lumen transports a contrast media from the catheter's proximal end and through the port arrangement. The catheter may include a steering arrangement and a lubricious coating on an outer surface of the shaft, allowing a clinician to navigate the catheter through vasculature and into the target vessel without use of a separate delivery sheath or guiding catheter. | 05-17-2012 |
20130116687 | OSTIAL RENAL NERVE ABLATION - A catheter including an elongated shaft having a distal end and a proximal end, where the catheter includes a thermal element at the distal end thereof. The thermal element may be used in an ablation procedure or other procedure to heat a tissue adjacent a vessel. In some instances, the thermal element may be positioned in a first vessel and may operate to heat tissue adjacent a second vessel or adjacent an ostium between the first vessel and the second vessel. Further, the catheter may include an expandable portion on which the thermal element may be connected or positioned. The expandable portion(s) may comprise a basket or cage, a balloon, a memory shape and formable portion, and/or other mechanical expanders. | 05-09-2013 |
20130172880 | RENAL NERVE MODULATION DEVICES AND METHODS FOR RENAL NERVE MODULATION - Medical devices and methods for making and using medical devices are disclosed. An example method may include a method for renal nerve modulation. The method may include providing a steerable medical device, advancing the steerable medical device through a vein to a position adjacent to the kidney, advancing the steerable medical device through a vessel wall of the vein and into body tissue positioned adjacent to a renal artery, and steering the steerable medical device around at least a portion of the renal artery. | 07-04-2013 |
20130231659 | OFF-WALL AND CONTACT ELECTRODE DEVICES AND METHODS FOR NERVE MODULATION - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a system for nerve modulation. The system may include an elongate shaft and a nerve modulation assembly disposed at the distal end of the shaft. The nerve modulation assembly may have a collapsed configuration and an expanded configuration. The nerve modulation assembly may include an inner basket and an outer basket. The inner basket may include a plurality of electrode struts. Each electrode strut may include an electrode. The outer basket may include a plurality of spacer struts. | 09-05-2013 |
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 |
20140025069 | RENAL NERVE MODULATION CATHETER DESIGN - Systems for nerve and tissue modulation are disclosed. An example system may an elongate shaft including an expandable frame coupled to the shaft adjacent to a distal end of the shaft. The frame may include a plurality of electrically conductive regions for emitting an electrical current comprising at least a first electrically conductive region and a second electrically conductive region. The system may further include a ground pad and a control unit electrically coupled to the plurality of electrically conductive regions and the ground pad. The control and power unit is configured to operate in unipolar mode and bipolar mode during the same procedure. | 01-23-2014 |
20140039591 | CARDIAC STIMULATION SYSTEM - Some embodiments of pacing systems employ wireless electrode assemblies to provide pacing therapy. The wireless electrode assemblies may wirelessly receive energy via an inductive coupling so as to provide electrical stimulation to the surrounding heart tissue. In certain embodiments, the wireless electrode assembly may include one or more biased tines that shift from a first position to a second position to secure the wireless electrode assembly into the inner wall of the heart chamber. | 02-06-2014 |
20140135865 | Cardiac Stimulation Using Intravascularly-Deliverable Electrode Assemblies - A seed assembly for delivery to an interior of a heart includes an electrical stimulation circuit for delivering an electrical stimulus to cardiac tissue. A first electrode assembly is mechanically and electrically coupled to the seed assembly via a micro lead the first electrode assembly configured to deliver the electrical stimulus generated by the electrical stimulation circuit to the cardiac tissue. The seed assembly and the first electrode assembly are sized and shaped to fit entirely within the heart. | 05-15-2014 |
20140200578 | RENAL NERVE ABLATION CATHETER - Medical devices for ablating nerves perivascularly and methods for making and using the same are disclosed. An example medical device may include an expandable frame slidably disposed within a catheter shaft. The expandable frame may be configured to shift between a collapsed configuration and an expanded configuration. One or more electrodes may be disposed on a surface of the expandable frame. The one or more electrodes may be disposed radially inward relative to the greatest radial extent of the expandable frame when the expandable frame is in the expanded configuration. | 07-17-2014 |
20140222128 | STENT DELIVERY SYSTEM HAVING STENT SECUREMENT APPARATUS - A system/assembly for delivery and deployment of an inflation expandable stent within a vessel, comprising a catheter having proximal and distal ends; a stent, inflation expandable from a delivery diameter to a deployment diameter, such that the delivery diameter is reduced from the deployment diameter for conforming the stent to the catheter, such that the stent, in its delivery diameter, is coaxially mounted on the catheter near the catheter distal end; an expandable inflation means coaxially mounted on the catheter axially within the stent, for expansion of the stent from the delivery diameter to the deployment diameter upon application of fluid deployment pressure to the inflation means; and a securement component coaxially mounted on the catheter, axially within the expandable inflation means, the securement component designed and adapted to provide a securement pressure to the stent in the delivery diameter to maintain the stent in position on the catheter during delivery to the deployment site. | 08-07-2014 |
20140378966 | RENAL DENERVATION BALLOON CATHETER WITH RIDE ALONG ELECTRODE SUPPORT - A renal nerve ablation device may include an elongate tubular member having a distal region. An expandable member may be coupled to the distal region. An electrode support may be coupled to the distal region of the elongate tubular member and extend over a body of the expandable member. The electrode support may be free of connection to the body of the expandable member. One or more electrodes may be coupled to the electrode support. | 12-25-2014 |
20140378967 | MEDICAL DEVICES FOR RENAL NERVE ABLATION HAVING ROTATABLE SHAFTS - A medical device for renal denervation may include a catheter shaft including an outer shaft having a lumen formed therein and an inner shaft extending within the lumen of the outer shaft. The catheter may further include an expandable member having a proximal region coupled to a distal region of the outer shaft, and a distal region of the expandable member may be coupled to a distal region of the inner shaft. In some embodiments, one or more active electrodes may be disposed on an exterior surface of the expandable member and capable of providing the renal denervation treatment. In some embodiments, the inner shaft may be rotatable in relation to the outer shaft and/or the outer shaft may be rotatable in relation to the inner shaft. | 12-25-2014 |
20140378968 | MEDICAL DEVICES FOR RENAL NERVE ABLATION - Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for ablation procedures. The medical device may include an elongate shaft having a distal region. An expandable member may be coupled to the distal region. One or more active electrode assemblies may be coupled to the expandable member. The one or more of the active electrode assemblies may include a resistive element adjacent the expandable member. The electrode assembly may include or may be used with microheaters. | 12-25-2014 |
20150018817 | MULTIPLE ELECTRODE CONDUCTIVE BALLOON - 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. A balloon may be coupled to the distal region. An electrode may be disposed within the balloon. A virtual electrode may be defined along the balloon. The virtual electrode may include a region having a first non-conductive layer and a second conductive layer. | 01-15-2015 |
20150018818 | DEVICES AND METHODS FOR NERVE MODULATION - Systems for nerve and tissue modulation are disclosed. An illustrative system may include an intravascular nerve modulation system including a catheter shaft, an expandable basket and one or more electrode assemblies affixed to the expandable basket. The one or more electrode assemblies may be affixed to the expandable basket using one or more covers or coatings. | 01-15-2015 |
20150025525 | SPIRAL BIPOLAR ELECTRODE RENAL DENERVATION BALLOON - A renal nerve ablation device may include an elongate tubular member having a distal region. An expandable member may be coupled to the distal region. One or more active electrodes may be coupled to the expandable member. One or more ground electrodes may be coupled to the expandable member. The one or more active electrodes and/or the one or more ground electrodes may be oriented helically about the length of the expandable member. | 01-22-2015 |
20150025532 | MEDICAL DEVICES FOR RENAL NERVE ABLATION - Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for tissue ablation. The medical device may include an elongated shaft having a distal region. An inflatable balloon may be mounted to the distal region. The inflatable balloon may include a body region, a proximal waist, a distal waist, a proximal cone region, and a distal cone region. A skirt may be attached to the inflatable balloon and may extend proximally from the body region. An electrode assembly may be applied directly to an outer surface of the body region of the inflatable balloon. The electrode assembly may include a first conductive member applied directly to the outer surface of the body region of the inflatable balloon and extending proximally therefrom along an outer surface of the skirt. | 01-22-2015 |
20150025533 | RENAL NERVE ABLATION CATHETER HAVING TWIST BALLOON - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable balloon may be coupled to the catheter shaft. The balloon may be capable of shifting between a folded configuration and an expanded configuration. A support structure may be coupled to the balloon. The support structure may be capable of shifting the balloon toward the folded configuration. A plurality of elongate flexible electrode assemblies may be disposed on the balloon. The elongate flexible electrode assemblies may be oriented at an angle relative to a longitudinal axis of the balloon. | 01-22-2015 |
20150057657 | MEDICAL BALLOON HAVING PATTERNED RECESSED WALL PROFILE - A medical balloon comprising a balloon wall formed from a polymeric material, the balloon wall having an inner surface and an outer surface, the balloon wall comprising patterned recesses in the outer surface thereof and flexible circuits disposed within the patterned recesses, the flexible circuits are defined by an outer perimeter, and devices and methods for making the same. | 02-26-2015 |
20150080883 | ABLATION BALLOON WITH VAPOR DEPOSITED COVER LAYER - Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable balloon may be coupled to the catheter shaft. The balloon may be capable of shifting between a folded configuration and an expanded configuration. A plurality of elongate electrode assemblies may be disposed on the balloon. A cover layer may be deposited on the electrode assemblies. Portions of the electrode assemblies may be free of the cover layer. | 03-19-2015 |