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公开(公告)号：US09014807B2
公开(公告)日：2015-04-21
申请号：US13297785
申请日：2011-11-16
CPC分类号： A61N1/37 , A61B2560/0276 , A61N1/00 , A61N1/36521 , A61N2001/083
摘要： An implantable medical device can include a therapy circuit coupled to a therapy delivery terminal, the therapy circuit configured to generate a specified electrostimulation therapy for delivery to a tissue site via the therapy delivery terminal, and a measurement circuit for measuring at least two impedances of a first terminal combination including the therapy delivery terminal, the two impedances corresponding to at least two instances of excitation separated enough in time to capture an impedance artifact due at least in part to a motion of the heart, such as to determine an electrostimulation therapy lead status at least in part using the at least two impedances.
摘要翻译： 可植入医疗装置可以包括耦合到治疗递送终端的治疗电路，所述治疗电路被配置为产生用于经由治疗递送终端递送到组织部位的特定的电刺激疗法，以及用于测量至少两个阻抗的测量电路 包括治疗递送终端的第一终端组合，对应于至少两个激励实例的两个阻抗在时间上足够分离以捕获至少部分地由于心脏的运动引起的阻抗伪影，例如确定电刺激治疗引导状态 至少部分地使用所述至少两个阻抗。
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公开(公告)号：US20110160808A1
公开(公告)日：2011-06-30
申请号：US12977158
申请日：2010-12-23
IPC分类号： A61N1/36
CPC分类号： A61N1/37 , A61N1/086 , A61N1/3706 , A61N1/3718 , A61N1/37258 , A61N1/3752 , A61N2001/083
摘要： An implantable medical device can include a hermetically-sealed implantable housing, an exposed first conductor located on or near the housing, and at least one insulated second conductor located near the exposed first conductor. In an example, the implantable medical device can include an isolation test circuit to provide a test stimulus to the exposed first conductor and configured to measure a portion of the test stimulus coupled to the second conductor.
摘要翻译： 可植入医疗装置可以包括密封的可植入壳体，位于壳体上或附近的暴露的第一导体，以及位于暴露的第一导体附近的至少一个绝缘的第二导体。 在一个示例中，可植入医疗设备可以包括隔离测试电路，以向暴露的第一导体提供测试刺激，并且被配置为测量耦合到第二导体的测试刺激的一部分。
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83.发明授权Selective cardiac activity analysis atrial fibrillation detection system and method and atrial defibrillator utilizing same 失效选择性心脏活动分析心房颤动检测系统和方法和心房除颤器利用它
公开(公告)号：US5522852A
公开(公告)日：1996-06-04
申请号：US233251
申请日：1994-04-26
申请人： Harley White , Joseph M. Bocek
发明人： Harley White , Joseph M. Bocek
IPC分类号： A61N1/39
CPC分类号： A61N1/3956 , A61N1/395
摘要： An atrial defibrillator applies cardioverting electrical energy to the atria of a human heart in need of cardioversion. The defibrillator includes an electrode pair and a sense amplifier associated with the atria of the heart for sensing electrical activity of the heart during a plurality of cardiac cycles to provide a cardiac signal. A detector is responsive to the cardiac signal for detecting cardiac events. During each cardiac cycle of the plurality of cardiac cycles, a time for counting is established wherein each time for counting has a total duration less than the duration of its corresponding cardiac cycle. A counter counts the cardiac events detected by the detector during the time for counting of the plurality of cardiac cycles to provide a cardiac event count. A comparator compares the cardiac event count to a predetermined cardiac event count. If the cardiac event count is greater than the predetermined cardiac event count, the atria are deemed to be in fibrillation and a cardiovertor applies cardioverting electrical energy to the atria to cardiovert the detected atrial fibrillation.
摘要翻译： 心房除颤器将心脏电复律应用于需要心脏复律的人心脏心房。 除颤器包括电极对和与心脏心房相关联的感测放大器，用于在多个心动周期期间感测心脏的电活动以提供心脏信号。 检测器响应于心脏信号以检测心脏事件。 在多个心动周期的每个心动周期期间，建立用于计数的时间，其中每次计数的总持续时间小于其对应的心动周期的持续时间。 计数器对在计数多个心动周期的时间期间由检测器检测到的心脏事件进行计数以提供心脏事件计数。 比较器将心脏事件计数与预定的心脏事件计数进行比较。 如果心脏事件计数大于预定心脏事件计数，则心房被认为是颤动，心脏转移器将心脏转移电能施加到心房以对所检测到的心房颤动进行心跳转移。
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84.发明授权Implantable atrial defibrillator having an intermittently activated fibrillation detector 失效具有间歇激活的原纤颤检测器的可植入心房除颤器
公开(公告)号：US5464432A
公开(公告)日：1995-11-07
申请号：US232767
申请日：1994-04-25
IPC分类号： A61N1/39
CPC分类号： A61N1/3956 , A61N1/395
摘要： An implantable automatic atrial defibrillator powered by a depletable battery power source conserves battery power for extending the predicted life of the defibrillator by intermittently detecting for atrial fibrillation. The atrial defibrillator includes a real time clock which, at spaced apart predetermined times, causes heart activity data to be stored in a memory. Thereafter, a normally deactivated atrial fibrillation detector is activated for processing the stored data to detect for atrial fibrillation.
摘要翻译： 由可消耗电池电源供电的植入式自动心房除颤器通过间歇检测心房颤动而节省电池电力，延长除颤器的预期寿命。 心房除颤器包括实时时钟，其以间隔开的预定时间将心脏活动数据存储在存储器中。 此后，激活正常失活的心房颤动检测器用于处理存储的数据以检测心房颤动。
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公开(公告)号：US5251624A
公开(公告)日：1993-10-12
申请号：US902998
申请日：1992-06-22
CPC分类号： A61N1/3956 , A61N1/3906 , A61N1/3912 , A61N1/395
摘要： A pulse generator for use in implantable atrial defibrillator provides cardiovertinq electrical energy to the atria of a heart through at least one lead having a pair of electrodes associated with the atria of the heart. The pulse generator includes a depletable, low voltage, power source such as a battery. A charging circuit coupled to the battery includes a flyback transformer for converting the battery voltage to low duty cycle pulsating high voltage electrical energy to store the high voltage electrical energy in a storage capacitor coupled to the charging circuit. A crosspoint switch selectively couples the storage capacitor to the electrodes for applying a portion of the stored electrical energy to the atria of the heart for cardioverting the atria of the heart.
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