SYNCHRONIZATION OF ANTI-TACHYCARDIA PACING IN AN EXTRA-CARDIOVASCULAR IMPLANTABLE SYSTEM

    公开(公告)号:US20170266442A1

    公开(公告)日:2017-09-21

    申请号:US15071231

    申请日:2016-03-16

    Inventor: Troy E. JACKSON

    Abstract: An extra-cardiovascular implantable cardioverter defibrillator (ICD) system receives a cardiac electrical signal by an electrical sensing circuit via an extra-cardiovascular sensing electrode vector and senses cardiac events from the cardiac electrical signal. The ICD system detects tachycardia from the cardiac electrical signal and determines a tachycardia cycle length from the cardiac electrical signal. The ICD system determines an ATP interval based on the tachycardia cycle length and sets an extended ATP interval that is longer than the ATP interval. The ICD delivers ATP pulses to a patient's heart via an extra-cardiovascular pacing electrode vector different than the sensing electrode vector. The ATP pulses include a leading ATP pulse delivered at the extended ATP interval after a cardiac event is sensed from the cardiac electrical signal and a second ATP pulse delivered at the ATP interval following the leading ATP pulse.

    SYSTEMS AND METHODS FOR LEADLESS PACING AND SHOCK THERAPY
    3.
    发明申请
    SYSTEMS AND METHODS FOR LEADLESS PACING AND SHOCK THERAPY 有权
    无铅和防震治疗的系统和方法

    公开(公告)号:US20150297905A1

    公开(公告)日:2015-10-22

    申请号:US14789008

    申请日:2015-07-01

    Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.

    Abstract translation: 描述了使用皮下植入式心律转复除颤器(SICD)和无引线起搏装置(LPD)监测心律不齐和递送电刺激治疗的技术和系统。 例如,SICD可以检测来自心脏的第一电信号内的快速性心律失常,并且基于快速性心律失常确定将抗心律失常休克疗法递送给患者以治疗所检测到的心律失常。 LPD可以接收来自SICD的通信,请求LPD向心脏提供抗心动过速起搏,并且基于由LPD感测到的心脏的第二电信号确定是否将心动过速(ATP)提供给心脏。 以这种方式,SICD和LPD可以通信以协调ATP和/或心脏复律/除颤疗法。 在另一个示例中,LPD可以被配置为在检测到抗快速性心律失常性休克疗法的递送之后递送后冲击起搏。

    MEDICAL DEVICE AND METHOD FOR DETECTING ARRHYTHMIA

    公开(公告)号:US20250072810A1

    公开(公告)日:2025-03-06

    申请号:US18730301

    申请日:2023-02-14

    Abstract: A medical device comprises a sensing circuit configured to sense at least one cardiac electrical signal, sense first ventricular event signals from the at least one cardiac electrical signal according to a sensitivity setting set to a first amplitude; and a control circuit in communication with the sensing circuit, the control circuit configured to determine that the at least one cardiac electrical signal meets suspected undersensing criteria, in response to determining that the suspected undersensing criteria are met, perform a morphology analysis of a first cardiac signal segment acquired from a first cardiac electrical signal of the at least one cardiac electrical signal sensed by the sensing circuit over a first predetermined time interval, determine that the first cardiac signal segment is a first tachyarrhythmia segment based on the morphology analysis, and adjust the sensitivity setting from the first amplitude to a second amplitude less than the first amplitude in response to determining that the first cardiac signal segment is a first tachyarrhythmia segment.

    SYSTEMS AND METHODS FOR LEADLESS PACING AND SHOCK THERAPY
    9.
    发明申请
    SYSTEMS AND METHODS FOR LEADLESS PACING AND SHOCK THERAPY 审中-公开
    无铅和防震治疗的系统和方法

    公开(公告)号:US20170043174A1

    公开(公告)日:2017-02-16

    申请号:US15334410

    申请日:2016-10-26

    Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.

    Abstract translation: 描述了使用皮下植入式心律转复除颤器(SICD)和无引线起搏装置(LPD)监测心律不齐和递送电刺激治疗的技术和系统。 例如,SICD可以检测来自心脏的第一电信号内的快速性心律失常,并且基于快速性心律失常确定将抗心律失常休克疗法递送给患者以治疗所检测到的心律失常。 LPD可以接收来自SICD的通信,请求LPD向心脏提供抗心动过速起搏,并且基于由LPD感测到的心脏的第二电信号确定是否将心动过速(ATP)提供给心脏。 以这种方式,SICD和LPD可以通信以协调ATP和/或心脏复律/除颤疗法。 在另一个示例中,LPD可以被配置为在检测到抗快速性心律失常性休克疗法的递送之后递送后冲击起搏。

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