Atrial tracking in an intracardiac ventricular pacemaker

    公开(公告)号:US11357987B2

    公开(公告)日:2022-06-14

    申请号:US16654052

    申请日:2019-10-16

    Abstract: An intracardiac ventricular pacemaker having a motion sensor is configured to produce a motion signal including an atrial systolic event and a ventricular diastolic event indicating a passive ventricular filling phase, set a detection threshold to a first amplitude during an expected time interval of the ventricular diastolic event and to a second amplitude lower than the first amplitude after an expected time interval of the ventricular diastolic event. The pacemaker is configured to detect the atrial systolic event in response to the motion signal crossing the detection threshold and set an atrioventricular pacing interval in response to detecting the atrial systolic event.

    POWER MANAGEMENT FOR IMPLANTABLE MEDICAL DEVICE SYSTEMS

    公开(公告)号:US20200368540A1

    公开(公告)日:2020-11-26

    申请号:US16990188

    申请日:2020-08-11

    Abstract: Techniques for minimizing rate of depletion of a non-rechargeable power source, to extend the operational lifetime of an implantable medical device that includes the non-rechargeable power source, by enforcing operational-mode-specific communication protocols whereby inter-device communication between the implantable medical device and another implantable medical device is such that level of power draw from the non-rechargeable power source by the implantable medical device is less than level of power draw from the rechargeable power source by the another implantable medical device for the implantable medical devices to engage in communication with each other.

    Atrial contraction detection by a ventricular leadless pacing device for atrio-synchronous ventricular pacing
    16.
    发明授权
    Atrial contraction detection by a ventricular leadless pacing device for atrio-synchronous ventricular pacing 有权
    心房无引力起搏装置用于房室同步心室起搏的心房收缩检测

    公开(公告)号:US09399140B2

    公开(公告)日:2016-07-26

    申请号:US14579105

    申请日:2014-12-22

    Abstract: A leadless pacing device (LPD) includes a motion sensor configured to generate a motion signal as a function of heart movement. The LPD is configured to analyze the motion signal within an atrial contraction detection window that begins an atrial contraction detection delay period after activation of the ventricle, and detect a contraction of an atrium of the heart based on the analysis of the motion signal within the atrial contraction detection window. If the LPD does not detect a ventricular depolarization subsequent to the atrial contraction, e.g., with an atrio-ventricular (AV) interval beginning when the atrial contraction was detected, the LPD delivers a ventricular pacing pulse.

    Abstract translation: 无引脚起搏装置(LPD)包括被配置为产生作为心脏运动的函数的运动信号的运动传感器。 LPD被配置为分析在激活心室之后开始心房收缩检测延迟期的心房收缩检测窗口内的运动信号,并且基于心房内的运动信号的分析来检测心脏的心房的收缩 收缩检测窗口。 如果LPD在心房收缩之后没有检测到心室去极化,例如当检测到心房收缩时开始心房(AV)间隔,则LPD递送心室起搏脉冲。

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