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    • 6. 发明授权
    • Pacemaker for detection of evoked response
    • 起搏器检测诱发反应
    • US5941903A
    • 1999-08-24
    • US70158
    • 1998-04-30
    • Qingsheng ZhuMichael LydenScot BoonMark Gryzwa
    • Qingsheng ZhuMichael LydenScot BoonMark Gryzwa
    • A61N1/37
    • A61N1/371A61N1/3716
    • A method and apparatus for attenuating polarization voltages or "afterpotentials" which develop at the heart tissue/electrode interface following the delivery of a pacing stimulus to the heart tissue such that the evoked response of the heart may be accurately detected to determine whether each pacing stimulus resulted in heart capture or contraction, thereby facilitating improved tracking of the capture threshold for minimizing power consumption while assuring therapeutic efficacy. The conventional large capacitance coupling capacitor used to suppress DC components of the pacing pulse is reduced to effectively lower the equivalent capacitance of the pacing and coupling capacitors following delivery of the pacing pulse, allowing shorter recharge and blanking intervals. As a result, the evoked response is more easily detected.
    • 一种在将起搏刺激递送到心脏组织之后,衰减极化电压或“后电位”的方法和装置,其在心脏组织/电极界面处发展,从而可以精确地检测心脏的诱发反应以确定每个起搏刺激 导致心脏捕获或收缩,从而有助于改善捕获阈值的跟踪以最小化功率消耗,同时确保治疗功效。 用于抑制起搏脉冲的DC分量的常规大电容耦合电容器被减少以有效地降低起搏脉冲递送后的起搏和耦合电容器的等效电容,从而允许较短的再充电和消隐间隔。 结果,更容易检测到诱发反应。