Patent application number | Description | Published |
20080234792 | SYSTEMS AND METHODS FOR TRANSVENOUS LEAD IMPLANTATION - Some embodiments relate to a method of implanting a cardiac lead. An expansion module is implanted in a target region within vasculature, the target region being defined by a portion of a brachiocephalic vein and a portion of a corresponding subclavian vein. The expansion module is transitioned from a collapsed state to an expanded state within the target region to contact the vasculature. A cardiac lead is implanted through the expansion module, the cardiac lead defining an intermediate section corresponding to the target region. The intermediate section of the cardiac lead includes a surface treatment adapted to reduce at least one of cell proliferation, thrombosis, fibrosis, and inflammation at the target region. | 09-25-2008 |
20080288039 | SYSTEMS AND METHODS FOR FIXATING TRANSVENOUSLY IMPLANTED MEDICAL DEVICES - A transvenously implantable medical device (TIMD) includes an electrical lead and a control module. The electrical lead includes one or more electrodes and is adapted for transvenous implantation. The electrical lead is also pre-biased to expand from a collapsed state to an expanded state to mechanically engage an internal wall of a blood vessel. The control module is secured to and in electrical communication with the electrical lead. The control module includes a signal management component and a power component disposed in a housing adapted for implantation into the blood vessel. The control module is adapted for at least one of stimulating and sensing a physiologic response using the one or more electrodes of the electrical lead. | 11-20-2008 |
20090125059 | COMPRESSION MEMBER SUTURE SLEEVE - An implantable medical system includes a medical lead including an insulating sheath and a conductor and an anchoring device. The anchoring device defines an inner lumen adapted to coaxially receive the medical lead, where the inner lumen has an effective diameter. The anchoring device includes a sleeve including a substantially elongate body defining an outer surface and an inner bore. The anchoring device also has a compression member including a first end, a second end, and an intermediate portion between the first and second ends. The compression member is at least partially embedded in the sleeve such that compression of the first and second ends of the compression member toward one another causes the effective diameter of at least a portion of the inner lumen of the anchoring device to reversibly increase. | 05-14-2009 |
20090210043 | MEDICAL ELECTRICAL LEAD WITH PROXIMAL ARMORING - A medical electrical lead includes a flexible, insulative body defining a proximal region, an intermediate region, and a distal region. The proximal region is configured to be implanted at a subcutaneous implantation site, and is dimensioned to extend from an implantation location of the pulse generator to a location distal to a cardiovascular system entry site. The intermediate region is configured to extend distally from the proximal region to a location distal to a superior vena cava of a patient's heart, and the distal region is configured to extend distally from the intermediate region within the patient's heart. The lead further includes an armoring layer disposed on the lead body covering at least the proximal region. | 08-20-2009 |
20090210044 | MODULAR, ZONE-SPECIFIC MEDICAL ELECTRICAL LEAD DESIGN - A medical electrical lead configured to be coupled to a pulse generator in a cardiac rhythm management system. The lead comprises a proximal terminal connector configured for coupling the lead to the pulse generator, and a plurality of longitudinally arranged lead segments each configured to exhibit one or more predetermined physical characteristics based on the implantation location for the respective segment. The lead segments may be pre-fabricated as separate modules optimized for the operating environment and/or delivery requirements of the respective segments. The pre-fabricated modules are longitudinally arranged and joined to form the lead. | 08-20-2009 |
20090259272 | BUNDLE OF HIS STIMULATION SYSTEM - A system for therapeutically stimulating a His bundle includes an implantable pulse generator and a multi-polar medical electrical lead. The generator is configured for subcutaneous implantation and to generate a pacing stimulus. The lead includes a connector assembly, a flexible tubular body, a distal tip assembly and coil conductors. The body extends intravascularly from the generator to a location proximate the His bundle and includes a proximal end, a distal end, and a longitudinal lumen. The tip assembly includes an electrode, a fixation helix, and a shank portion. The helix extends to a location proximate the His bundle and is operable as an electrically isolated electrode. The shank portion extends within the lumen and includes a receptacle for receiving a stylet tip. The conductors extend longitudinally through the lumen and are coupled to the electrode and the helix. One or both of the conductors defines a stylet lumen. | 10-15-2009 |
20100076538 | STYRENE-ISOBUTYLENE COPOLYMERS AND MEDICAL DEVICES CONTAINING THE SAME - In accordance with various aspects of the invention, copolymers comprising styrene and isobutylene monomers are used in the construction of implantable and insertable medical devices for electrical stimulation, including, for example, electronic signal generating components and electrical leads for such devices. | 03-25-2010 |
20110054581 | MEDICAL DEVICES INCLUDING POLYISOBUTYLENE BASED POLYMERS AND DERIVATIVES THEREOF - The present invention is directed to a medical electrical lead including an insulative lead body formed, at least in part, from a polyisobutylene urethane, urea or urethane/urea copolymer. In some applications, the lead body can include at least one outer tubular insulator and/or an inner elongated member formed from a polyisobutylene urethane, urea or urethane/urea copolymer. Portions of the lead body formed form the polyisobutylene urethane, urea or urethane/urea copolymer can be either extruded or molded. | 03-03-2011 |
20110077661 | MEANS TO SECURELY FIXATE PACING LEADS AND/OR SENSORS IN VESSELS - According to embodiments of the present invention, a cardiac lead system adapted for fixation to a vessel including an expandable fixation mechanism adapted to engage an inner surface of the vessel and a lead member comprising an anchor structure at distal end, the anchor structure configured to removably engage with fixation mechanism. Such anchor structure may be helical, and may removably engage fixation mechanism upon rotation or an application of torque, and may be extendable and/or retractable. Fixation mechanism may be polymer coated weave and/or mesh to trap anchor structure. Lead member and/or fixation mechanism may include electrodes and/or sensors, and lead member may include L-shape, S-shape, spiral, and/or sinusoidal shape for positioning of electrodes and/or sensors or for facilitated engagement of anchor structure. A guide wire attached to fixation mechanism during deployment may, prior to detachment, serve to guide lead member to a target site at fixation mechanism. | 03-31-2011 |
20110160824 | MULTI-FUNCTION LEAD IMPLANT TOOL - Devices, systems, and methods for implanting and testing multi-conductor electrical leads are disclosed. An illustrative implant tool for use with an implantable lead includes a main body, a plurality of spring contact members, and a knob mechanism. The main body of the implant tool includes a distal clamping mechanism with an opening adapted to frictionally receive a terminal boot of the implantable lead. The spring contact members are configured to provide an interface for connecting electrical connectors from a Pacing System Analyzer (PSA) or other testing device to the terminal contacts on the implantable lead. A knob mechanism coupled to the main body can be actuated to engage a terminal pin of the implantable lead, allowing an implanting physician to engage a fixation helix into body tissue by rotating the mechanism. | 06-30-2011 |
20110197440 | MODULAR, ZONE-SPECIFIC MEDICAL ELECTRICAL LEAD DESIGN - A medical electrical lead configured to be coupled to a pulse generator in a cardiac rhythm management system. The lead comprises a proximal terminal connector configured for coupling the lead to the pulse generator, and a plurality of longitudinally arranged lead segments each configured to exhibit one or more predetermined physical characteristics based on the implantation location for the respective segment. The lead segments may be pre-fabricated as separate modules optimized for the operating environment and/or delivery requirements of the respective segments. The pre-fabricated modules are longitudinally arranged and joined to form the lead. | 08-18-2011 |
20110208280 | LEAD INCLUDING CONDUCTORS CONFIGURED FOR REDUCED MRI-INDUCED CURRENTS - Systems and methods for improving response of implantable leads to magnetic fields during medical procedures such as magnetic resonance imaging (MRI) are described. In various embodiments, the lead includes an inner conductor that is helically shaped and radially surrounded, at least in part, by one or more high-voltage conductors. The high-voltage conductor can be mechanically and/or electrically coupled, via a coupler, to the shocking coil. The pitch of the inner and/or outer conductor can be varied (e.g., continuously or at certain points) along the length of the lead. In some embodiments, the filar thickness, the pitch, and the mean coil diameter of the inner coil, the high voltage conductor coil, and the shock coil can be configured such that these coils have a desired inductance value when subjected to externally applied electromagnetic energy at radio frequencies commonly generated by MRI scanners (e.g., 40 MHz to 300 MHz). | 08-25-2011 |
20120004667 | HELIX RETRACTION ASSIST MECHANISM - An active fixation implantable medical lead may include an electrode base that is configured to accommodate an extraction stylet that may be used if the fixation helix is not otherwise easily retracted. An extraction tool may be used in combination with the extraction stylet in extraction techniques designed for retraction of a fixation helix. | 01-05-2012 |
20120004714 | LEAD HAVING COIL ELECTRODE WITH PREFERENTIAL BENDING REGION - An implantable lead may have a distal shocking coil that is configured to include a predetermined buckle region in order to limit potential cardiac damage that might otherwise occur if the implantable lead is too stiff. An implantable lead may have a proximal shocking coil that is configured to have a flexibility that more closely matches the flexibility of the lead body on either side of the proximal shocking coil. | 01-05-2012 |
20120019260 | MULTIPOLAR LEAD EVALUATION DEVICE - A multipolar lead evaluation device may be configured to easily permit electrical contact to be made between a pacing system analyzer and the terminal pin and each of the terminal contacts of an implantable lead without damaging the implantable lead. Alligator clips may be used to secure electrical conductors from the pacing system analyzer to spring contact clips disposed within the lead evaluation device. | 01-26-2012 |
20120101553 | SYSTEMS AND METHODS FOR FIXATING TRANSVENOUSLY IMPLANTED MEDICAL DEVICES - A transvenously implantable medical device (TIMD) includes an electrical lead and a control module. The electrical lead includes one or more electrodes and is adapted for transvenous implantation. The electrical lead is also pre-biased to expand from a collapsed state to an expanded state to mechanically engage an internal wall of a blood vessel. The control module is secured to and in electrical communication with the electrical lead. The control module includes a signal management component and a power component disposed in a housing adapted for implantation into the blood vessel. The control module is adapted for at least one of stimulating and sensing a physiologic response using the one or more electrodes of the electrical lead. | 04-26-2012 |
20120130397 | MULTI-FUNCTION LEAD IMPLANT TOOL - Devices, systems, and methods for implanting and testing multi-conductor electrical leads are disclosed. An illustrative implant tool for use with an implantable lead includes a main body, a plurality of spring contact members, and a knob mechanism. The main body of the implant tool includes a distal clamping mechanism with an opening adapted to frictionally receive a terminal boot of the implantable lead. The spring contact members are configured to provide an interface for connecting electrical connectors from a Pacing System Analyzer (PSA) or other testing device to the terminal contacts on the implantable lead. A knob mechanism coupled to the main body can be actuated to engage a terminal pin of the implantable lead, allowing an implanting physician to engage a fixation helix into body tissue by rotating the mechanism. | 05-24-2012 |
20120165914 | EXTENDABLE/RETRACTABLE FIXATION LEAD WITH DISTAL TRAVELLING SEAL AND RELATED DEVICES - An implantable lead having a distal assembly including a coupler, a fixation helix secured to the coupler, a housing in which the fixation helix and the coupler are disposed, and a resilient seal that is fixedly secured to the coupler between proximal and distal ends thereof and able to translate with the coupler relative to the housing. The seal is positioned to sealingly engage an internal surface of the housing. When the coupler is translated such that the fixation helix is in a fully extended position, the seal is positioned to substantially seal off the housing to prevent tissue ingrowth. | 06-28-2012 |
20120179221 | BUNDLE OF HIS STIMULATION SYSTEM - A system for therapeutically stimulating a His bundle includes an implantable pulse generator and a multi-polar medical electrical lead. The generator is configured for subcutaneous implantation and to generate a pacing stimulus. The lead includes a connector assembly, a flexible tubular body, a distal tip assembly and coil conductors. The body extends intravascularly from the generator to a location proximate the His bundle and includes a proximal end, a distal end, and a longitudinal lumen. The tip assembly includes an electrode, a fixation helix, and a shank portion. The helix extends to a location proximate the His bundle and is operable as an electrically isolated electrode. The shank portion extends within the lumen and includes a receptacle for receiving a stylet tip. The conductors extend longitudinally through the lumen and are coupled to the electrode and the helix. One or both of the conductors defines a stylet lumen. | 07-12-2012 |
20130060314 | LEAD INCLUDING CONDUCTORS CONFIGURED FOR REDUCED MRI-INDUCED CURRENTS - An implantable medical device lead includes an inner conductor coil comprising one or more generally cylindrically wound filars. The inner conductor coil is configured to have a first inductance value greater than or equal to 0.2 μH/inch when the inner conductor coil is subjected to a range of radio frequencies. The implantable medical device lead also includes a multi-filar outer coil comprising two or more generally cylindrically wound filars. The multi-filar outer coil is configured to have a second inductance value greater than or equal to 0.1 μH/inch when the multi-filar outer coil is subjected to the range of radio frequencies. | 03-07-2013 |
20130131767 | POLYISOBUTYLENE URETHANE, UREA AND URETHANE/UREA COPOLYMERS AND MEDICAL LEADS CONTAINING THE SAME - The present invention provides medical devices that contain polyisobutylene urethane copolymers, polyisobutylene urea copolymers and polyisobutylene urethane/urea copolymers. More particularly, the present invention provides medical leads that contain such copolymer. | 05-23-2013 |
20130282093 | IMPLANTABLE MEDICAL DEVICE LEAD INCLUDING A UNIFILAR COILED CABLE - A medical device lead includes a flexible body having a proximal region with a proximal end, and a distal region with a distal end. A connector is coupled to the proximal end of the flexible body of the lead to electrically and mechanically connect the lead to an implantable pulse generator. The medical device lead also includes an electrode in the distal region of the flexible body, and a cable conductor having a proximal end electrically coupled to the connector and a distal end electrically coupled to the electrode. The cable conductor consists of a single helically coiled filar including a plurality of co-radial turns and having an outer diameter of less than about 0.020 inch (0.508 mm). | 10-24-2013 |
20130310910 | LEAD INCLUDING CONDUCTORS CONFIGURED FOR REDUCED MRI-INDUCED CURRENTS - An implantable medical device lead includes an inner conductor coil comprising one or more generally cylindrically wound filars. The inner conductor coil is configured to have a first inductance value greater than or equal to 0.2 μH/inch when the inner conductor coil is subjected to a range of radio frequencies. The implantable medical device lead also includes a multi-filar outer coil comprising two or more generally cylindrically wound filars. The multi-filar outer coil is configured to have a second inductance value greater than or equal to 0.1 μH/inch when the multi-filar outer coil is subjected to the range of radio frequencies. | 11-21-2013 |
20140067030 | MRI COMPATIBLE LEAD COIL - Various embodiments concern leads having low peak MRI heating for improved MRI compatibility. Various leads include a lead body having at least one lumen, a proximal end configured to interface with an implantable medical device, and a distal end. Such leads can further include a conductor extending along at least a portion of the lead body within the at least one lumen and a defibrillation coil extending along an exterior portion of the lead body and in electrical connection with the conductor, wherein at least a section of the defibrillation coil is under longitudinal compression. The longitudinal compression can lower peak MRI heating along the defibrillation coil. The longitudinal compression may maintain circumferential contact between adjacent turns of the section of the defibrillation coil. | 03-06-2014 |
20140067036 | HIS BUNDLE LEAD DELIVERY SYSTEM - Various embodiments concern implanting a lead to directly stimulate the bundle of His. Various embodiments can include introducing a curve of an outer guide catheter into the right ventricle, extending a curve of an inner guide catheter from a lumen of the outer guide catheter, extending a fixation element on a distal tip of an anchor wire from a lumen the inner guide catheter, and anchoring the anchor wire to target tissue within the right ventricle, the target tissue along the septal wall and proximate the tricuspid valve and the bundle of His. A distal tip of an implantable lead with a lumen can then be advanced over the anchor wire to the target tissue as the anchor wire guides the distal tip of the lead to the target tissue. | 03-06-2014 |
20140144580 | MEDICAL DEVICES INCLUDING POLYISOBUTYLENE BASED POLYMERS AND DERIVATIVES THEREOF - The present invention is directed to a medical electrical lead including an insulative lead body formed, at least in part, from a polyisobutylene urethane, urea or urethane/urea copolymer. In some applications, the lead body can include at least one outer tubular insulator and/or an inner elongated member formed from a polyisobutylene urethane, urea or urethane/urea copolymer. Portions of the lead body formed form the polyisobutylene urethane, urea or urethane/urea copolymer can be either extruded or molded. | 05-29-2014 |
20140194963 | POLYISOBUTYLENE URETHANE, UREA AND URETHANE/UREA COPOLYMERS AND MEDICAL LEADS CONTAINING THE SAME - The present invention provides medical devices that contain polyisobutylene urethane copolymers, polyisobutylene urea copolymers and polyisobutylene urethane/urea copolymers. More particularly, the present invention provides medical leads that contain such copolymer. | 07-10-2014 |
20140336668 | SYSTEMS AND METHODS FOR FIXATING TRANSVENOUSLY IMPLANTED MEDICAL DEVICES - A transvenously implantable medical device (TIMD) includes an electrical lead and a control module. The electrical lead includes one or more electrodes and is adapted for transvenous implantation. The electrical lead is also pre-biased to expand from a collapsed state to an expanded state to mechanically engage an internal wall of a blood vessel. The control module is secured to and in electrical communication with the electrical lead. The control module includes a signal management component and a power component disposed in a housing adapted for implantation into the blood vessel. The control module is adapted for at least one of stimulating and sensing a physiologic response using the one or more electrodes of the electrical lead. | 11-13-2014 |