VFA delivery systems and methods
    1.
    发明授权

    公开(公告)号:US11951313B2

    公开(公告)日:2024-04-09

    申请号:US16683413

    申请日:2019-11-14

    Abstract: Devices, systems, and methods deliver implantable medical devices for ventricular-from-atrial (VfA) cardiac therapy. A VfA device may be implanted in the right atrium (RA) with an electrode extending from the right atrium into the left ventricular myocardium. A flexible leed, or another probe, may be advanced to the potential implantation site and used to identify a precise location for implantation of a medical device, such as an electrode, leadlet, lead, or intracardiac device. Some methods may include locating a potential implantation site in the triangle of Koch region in the right atrium of a patient's heart; attaching a fixation sheath to the right-atrial endocardium in the potential implantation site; and implanting the medical device over a guide wire at the potential implantation site. An implantable medical device may include an intracardiac housing and a leadlet, which may be delivered by these methods.

    Implantable Medical Device
    2.
    发明申请

    公开(公告)号:US20220395683A1

    公开(公告)日:2022-12-15

    申请号:US17745083

    申请日:2022-05-16

    Applicant: Medtronic Inc.

    Abstract: An implantable medical device configured to deliver pacing therapy, the implantable medical device including a device body configured to position within a heart, where the device body comprises a proximal body portion and a distal body portion and defines a longitudinal axis extending through the proximal body portion and the distal body portion, the proximal body portion is configured to rotate around the longitudinal axis relative to distal body portion, and a leadlet mechanically coupled to the device body, where the leadlet mechanically supports an electrode configured to deliver pacing therapy, and where in response to the proximal body portion rotating relative to the distal body portion, the device body is configured to alter an extension length of the leadlet.

    Shuttle apparatus and associated systems and methods

    公开(公告)号:US11207504B2

    公开(公告)日:2021-12-28

    申请号:US15873153

    申请日:2018-01-17

    Abstract: The present disclosure is directed to a shuttle apparatus for detachably joining a catheter to a guidewire so that the joined catheter, extending alongside the guidewire, is in sliding engagement with the guidewire without extending around the guidewire. The apparatus comprises a collar member sized for mounting in sliding engagement around a length of the guidewire, the collar member having a longitudinal axis that approximately aligns along the length, when mounted thereabout, the length being defined between a proximal-most point of the guidewire and a distal point of the guidewire, the distal point being offset proximally from a distal-most point of the guidewire. The apparatus further comprises a plug member coupled to the collar member, the plug member having a longitudinal axis, and the plug member being sized to fit within an opening of the catheter for detachable engagement therewith.

    Implantable medical device fixation

    公开(公告)号:US10118026B2

    公开(公告)日:2018-11-06

    申请号:US15809579

    申请日:2017-11-10

    Abstract: Various fixation techniques for implantable medical device (IMDs) are described. In one example, an assembly comprises an IMD; and a set of active fixation tines attached to the IMD. The active fixation tines in the set are deployable from a spring-loaded position in which distal ends of the active fixation tines point away from the IMD to a hooked position in which the active fixation tines bend back towards the IMD. The active fixation tines are configured to secure the IMD to a patient tissue when deployed while the distal ends of the active fixation tines are positioned adjacent to the patient tissue.

    APPARATUS FOR FORMING A PASSAGEWAY IN TISSUE AND ASSOCIATED INTERVENTIONAL MEDICAL SYSTEMS

    公开(公告)号:US20180168687A1

    公开(公告)日:2018-06-21

    申请号:US15387224

    申请日:2016-12-21

    Abstract: An apparatus for forming a passageway through tissue includes a dilator mounted to a shaft, wherein the dilator includes a first portion, which has an increasing taper from a first outer diameter to a larger second outer diameter, and a second portion, which has a decreasing taper from the first portion to a distal end of the dilator, and which includes an external non-cutting thread formed along the decreasing taper. Lumens of the dilator and shaft provide a conduit for means to pierce through the tissue, for example, an elongate wire that includes a piercing tip. In some cases, the dilator first portion is expandable to, and contractible from, the larger second outer diameter, wherein the apparatus may include a spreading member configured to slide between the shaft and the first portion. The apparatus may be included in a system with an introducer sheath.

    LEADLESS PACEMAKER SYSTEM
    8.
    发明申请
    LEADLESS PACEMAKER SYSTEM 有权
    无铅飞行员系统

    公开(公告)号:US20140121719A1

    公开(公告)日:2014-05-01

    申请号:US13665492

    申请日:2012-10-31

    Abstract: A device includes a signal generator module, a processing module, and a housing. The signal generator module is configured to deliver pacing pulses to an atrium. The processing module is configured to detect a ventricular activation event and determine a length of an interval between the ventricular activation event and a previous atrial event that preceded the ventricular activation event. The processing module is further configured to schedule a time at which to deliver a pacing pulse to the atrium based on the length of the interval and control the signal generator module to deliver the pacing pulse at the scheduled time. The housing is configured for implantation within the atrium. The housing encloses the stimulation generator and the processing module.

    Abstract translation: 一种装置包括信号发生器模块,处理模块和壳体。 信号发生器模块被配置为向心房输送起搏脉冲。 处理模块被配置为检测心室激活事件并且确定心室激活事件与心室激活事件之前的先前心房事件之间的间隔的长度。 处理模块还被配置为基于间隔的长度来安排将起搏脉冲传送到心房的时间,并且控制信号发生器模块以在预定的时间传送起搏脉冲。 外壳被配置为在心房内植入。 外壳包围刺激发生器和处理模块。

    Dual chamber pacing
    9.
    发明授权

    公开(公告)号:US12246181B2

    公开(公告)日:2025-03-11

    申请号:US17653959

    申请日:2022-03-08

    Abstract: A medical system includes an implantable medical device that carries a first electrode on a distal end of the implantable medical device and a return electrode. The implantable medical device is configured to be positioned within a heart. The implantable medical device further includes a leadlet including a proximal end and a distal end. The proximal end is attached to the implantable medical device, and the distal end is configured to penetrate tissue of the heart. The leadlet carries a second electrode, and a body of the leadlet between the proximal end and the distal end is configured to flex when the distal end is implanted in the tissue of the heart. The implantable medical device further includes a fixation device attached to the implantable medical device. The fixation device is configured to affix the distal end of the implantable medical device to the heart.

    COMPACT IMPLANTABLE MEDICAL DEVICE AND DELIVERY DEVICE

    公开(公告)号:US20250073457A1

    公开(公告)日:2025-03-06

    申请号:US18952366

    申请日:2024-11-19

    Abstract: Methods and systems for positioning a leadless pacing device (LPD) in cardiac tissue are disclosed. A delivery device is employed that comprises a proximal end, a distal end and a lumen therebetween sized to receive the LPD. The LPD has a leadlet extending therefrom that includes a means to fixate the leadlet to tissue. The delivery device comprises an introducer to introduce the LPD into the lumen of the delivery device. The LPD is loaded in the distal end of the lumen of the delivery device. The leadlet extends proximally from the LPD while the fixation means extends distally toward the LPD. A LPD mover is configured to advance the LPD out of the delivery device. A leadlet mover is configured to advance the leadlet out of the lumen delivery device and cause the leadlet to engage with cardiac tissue.

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