Implantable cardiac stimulating apparatus and method employing detection
of P-waves from signals sensed in the ventricle
    3.
    发明授权
    Implantable cardiac stimulating apparatus and method employing detection of P-waves from signals sensed in the ventricle 失效
    可植入的心脏刺激装置和采用从心室感测的信号中检测P波的方法

    公开(公告)号:US5312445A

    公开(公告)日:1994-05-17

    申请号:US830395

    申请日:1992-02-03

    IPC分类号: A61N1/365 A61N1/362

    CPC分类号: A61N1/365

    摘要: A P-wave detector in a single chamber ventricular cardiac pacemaker, which is adapted to perform VDD pacing, senses natural atrial activity in the form of P-waves from a standard lead implanted in the ventricle of the heart. The P-wave detector is electrically coupled to a ventricular sensing lead and, although the electrode of the lead is implanted in the ventricle, circuitry within the pacemaker perceives intrinsic cardiac electrical activity arising from all parts of the heart. The P-wave detector is adapted to differentiate P-wave signals arising within the atrium from other cardiac and non-cardiac signals using template matching techniques in which an acquired signal is compared with a previously stored P-wave template.

    摘要翻译: 单室心室心脏起搏器中的P波检测器适用于执行VDD起搏,以植入心脏心室的标准导线以P波的形式感知自然心房活动。 P波检测器电耦合到心室感测引线,并且尽管引线的电极植入心室,起搏器内的电路感知心脏所有部位产生的内在心脏电活动。 P波检测器适于使用其中将获取的信号与先前存储的P波模板进行比较的模板匹配技术来区分在心房内产生的P波信号与其他心脏和非心脏信号。

    Pacemaker and method having optimized A-V delay by using the evoked
depolarization potential as an indicia of cardiac output
    4.
    发明授权
    Pacemaker and method having optimized A-V delay by using the evoked depolarization potential as an indicia of cardiac output 失效
    起搏器和方法通过使用诱发去极化电位作为心输出量的标记优化了A-V延迟

    公开(公告)号:US5643327A

    公开(公告)日:1997-07-01

    申请号:US492479

    申请日:1995-06-20

    IPC分类号: A61N1/362 A61N1/365 A61N1/368

    摘要: The cardiac output of a paced heart is optimized by measuring a parameter indicative of the volume of blood in a heart chamber as a function of a pacing parameter. The pacing parameter is adjusted so that the heart pumps the maximum volume at different rates for hearts with debilitating pathologies. This pacing parameter is then used for controlling the pacing pulses for pacing the heart. Preferably the volume parameter is the paced depolarization integral and the pacing parameter is the A-V delay.

    摘要翻译: 作为起搏参数的函数,通过测量指示心室中的血液体积的参数来优化起搏心脏的心输出量。 调整起搏参数,使心脏以令人衰弱的病态泵入不同速率的最大体积。 然后,该起搏参数用于控制用于起搏心脏的起搏脉冲。 体积参数最好是起搏去极化积分,起搏参数是A-V延迟。