Summation anodal pacing to complement multisite stimulation

    公开(公告)号:USRE50170E1

    公开(公告)日:2024-10-15

    申请号:US17366327

    申请日:2021-07-02

    发明人: Imran K. Niazi

    IPC分类号: A61N1/362 A61N1/05

    CPC分类号: A61N1/3622 A61N1/0587

    摘要: A device and method for cardiac pacing is disclosed in which anodal pacing of the left ventricle is provided. Anodal pacing occurs when an anodal surface area is sufficiently small to create an area of hyper-polarization of the myocardial cell membrane. This creates a virtual cathode at a location remote from the anode. The virtual cathode results in depolarization of the heart in a manner similar to the virtual cathode at the true fixed cathode. In addition a device and method for summation anodal pacing is provided in which one anode is common between two or more cathodes. This results in hyperpolarization of a larger segment of the myocardium as compared to non-summation anodal pacing and thereby forms a larger virtual electrode to enable capture of localized, discrete cardiac structures such as the bundle of His or the very proximal portions of the right and left bundles.

    GUIDING IMPLANTATION OF AN ENERGY DELIVERY COMPONENT IN A BODY

    公开(公告)号:US20240226544A1

    公开(公告)日:2024-07-11

    申请号:US18559049

    申请日:2022-05-05

    摘要: A system for guiding implantation of an energy delivery component of a cardiac pacing device at a fixation location within a heart of a patient is provided. During a procedure to implant an energy pulse delivery component, the system receives a patient cardiogram collected during pacing of the energy pulse delivery component while the energy pulse delivery component is positioned at a current location within the heart. The system then determines based on the patient cardiogram the current location of the energy pulse delivery component. The system then outputs an indication of the current location to guide affixing of the energy pulse delivery component at the intended fixation location. This process is repeated until the energy pulse delivery component is at the fixation location. The system also evaluates the effectiveness of pacing at intermediate location to optimize the final location based upon simulated electro-mechanics of the system in near-real time.

    Expanding tube coupling for reversible lead locking

    公开(公告)号:US11826563B2

    公开(公告)日:2023-11-28

    申请号:US17838239

    申请日:2022-06-12

    申请人: SPECTRANETICS LLC

    发明人: Kenneth P. Grace

    IPC分类号: A61N1/00 A61N1/05

    摘要: A device for extending a lead according to some embodiments includes a body, a tubular member coupled to the body, the tubular member comprising an outer surface, wherein the outer surface is sized to insert into an inner lumen of a lead, the tubular member is movable between a first configuration in which the tubular member slides into the lead, and a second configuration in which at least a portion of the tubular member expands to engage an inner surface of the lead; and, an actuation mechanism operatively coupled to the tubular member, the actuation mechanism configured to move the tubular member between the first configuration and second configuration.

    DELIVERY DEVICES AND METHODS FOR LEADLESS CARDIAC DEVICES

    公开(公告)号:US20180214688A1

    公开(公告)日:2018-08-02

    申请号:US15935611

    申请日:2018-03-26

    IPC分类号: A61N1/05 A61N1/375 A61N1/372

    摘要: Delivery devices, systems, and methods for delivering implantable leadless pacing devices are disclosed. An example delivery device may an outer tubular member and an inner tubular member slidably disposed within the lumen of the outer tubular member. A distal holding section may extend distally of a distal end of the inner tubular member and define a cavity therein for receiving an implantable leadless pacing device. The device may further include a hub portion including at least a first hub portion affixed adjacent to the proximal end of the outer tubular member and a second hub portion affixed adjacent to the proximal end of the inner tubular member. A first locking mechanism configured to releasably couple the outer tubular member and the inner tubular member may be disposed within the hub portion.