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    • 3. 发明授权
    • Cardiac sense amplifier for capture verification
    • 心脏放大器用于捕获验证
    • US06427085B1
    • 2002-07-30
    • US09309951
    • 1999-05-11
    • Scot C. BoonMark GryzwaMichael LydenQingsheng ZhuPaul Haefner
    • Scot C. BoonMark GryzwaMichael LydenQingsheng ZhuPaul Haefner
    • A61N137
    • A61N1/3712
    • A cardiac rhythm management device having a capture verification sensing circuit for use in either a normal beat to beat pacing mode or an autothreshold mode. The cardiac rhythm management device is coupled to one or more pacing leads having pacing/sensing electrodes coupled thereto, and includes a sensing circuit for sensing electrical activity of the patient's heart, wherein the sensing circuit includes a dedicated evoked response sense amplifier and at least one high pass coupling capacitor electrically connected as a portion of a high pass network and between a pacing/sensing electrode and a blanking switch. A plurality of high pass coupling capacitors are coupled in parallel each having a separate blanking switch, thereby creating a differential network to offset imbalance sensed from the electrode due to extraneous factors.
    • 一种具有捕获验证感测电路的心律管理装置,其用于正常搏动以节拍起搏模式或自阈值模式。 心律管理装置耦合到具有与之相连的起搏/感测电极的一个或多个起搏引线,并且包括用于感测患者心脏的电活动的感测电路,其中感测电路包括专用的诱发响应读出放大器和至少一个 高通耦合电容器作为高通网络的一部分并且在起搏/感测电极和消隐开关之间电连接。 多个高通耦合电容器并联耦合,每个具有单独的消隐开关,由此产生差分网络以抵消由于外部因素而从电极感测的不平衡。
    • 6. 发明授权
    • Rate management during automatic capture verification
    • 自动捕获验证期间的费率管理
    • US06473649B1
    • 2002-10-29
    • US09470269
    • 1999-12-22
    • Mark GryzwaQingsheng Zhu
    • Mark GryzwaQingsheng Zhu
    • A61N137
    • A61N1/3712Y10S128/901
    • An implantable cardiac rhythm management device capable of automatically detecting intrinsic and evoked response of a patient's heart and suitable for use during capture verification. The device of the present invention may operate in an automatic capture verification mode, wherein an electrocardiogram signal of a patient's heart is received and used by the device to determine whether a stimulation pulse evokes a response by the patient's heart. The device suspends the automatic capture verification mode and/or adjust the detection threshold dependent upon detected and/or measured noise, a determined amplitude of evoked response, a determined modulation in the evoked response, or detected and/or measured artifact. Further, the sensing circuit of the rhythm management device of the present invention reduces afterpotentials that result due to delivery of the stimulation pulses.
    • 一种植入式心律管理装置,其能够自动检测患者心脏的内在和诱发反应并适于在捕获验证期间使用。 本发明的装置可以在自动捕获验证模式下操作,其中由装置接收并使用患者心脏的心电图信号,以确定刺激脉冲是否引起患者心脏的反应。 取决于检测到的和/或测量的噪声,所确定的诱发响应幅度,诱发响应中的确定调制,或检测到的和/或测量的伪影,该装置暂停自动捕获验证模式和/或调整检测阈值。 此外,本发明的节律管理装置的感测电路减少了由于刺激脉冲的传送而导致的后电位。
    • 9. 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。