公开(公告)号：US5117824A

公开(公告)日：1992-06-02

申请号：US612760

申请日：1990-11-14

申请人： John G. Keimel ,  Joseph A. Ballis ,  Glenn M. Roline

发明人： John G. Keimel ,  Joseph A. Ballis ,  Glenn M. Roline

IPC分类号： A61N1/362 ,  A61N1/37

CPC分类号： A61N1/3704 ,  A61N1/3621

摘要： An implantable cardiac pacemaker and/or cardioverter/defibrillator employing an R-wave detector which atuomatically adjusts its sensing threshold in response to R-wave amplitude. The R-wave detector produces an output which is used to indicate the occurrence of ventricular contractions, and is used to reset the timing of the pacemaker and to indicate the occurrence of ventricular contractions for purposes of activating the associated cardioverter/defibrillator. Adjustment of the threshold is disable for a predetermined period following the delivery of each pacing pulse such that in the presence of continuous pacing for a predetermined period of time, the sensing threshold is returned to a desired, lower threshold level, allowing for detection of lower level R-waves, which may be indicative of tachyarrhythmia or fibrillation. The R-wave detector disclosed also eliminates the necessity for blanking of the input of the sense amplifier following sensing of naturally occurring R-waves, without increasing susceptibility to sensing of spontaneous T-waves which occur thereafter.

摘要翻译： 一种可植入式心脏起搏器和/或心律转复/除颤器，其采用R波检测器，其响应于R波振幅而自动调整其感测阈值。 R波检测器产生用于指示心室收缩发生的输出，并且用于重置起搏器的时间并指示心室收缩的发生以用于激活相关的心律转复器/除颤器。 在每个起搏脉冲传送之后的预定时间段内禁止阈值的调节，使得在存在连续起搏预定时间段的情况下，感测阈值返回到期望的较低阈值电平，允许检测较低的 水平R波，其可以指示快速性心律失常或颤动。 所公开的R波检测器还消除了在感测天然存在的R波之后消隐读出放大器的输入的必要性，而不增加对其后发生的自发T波的敏感性。

公开(公告)号：US20080223381A1

公开(公告)日：2008-09-18

申请号：US11687457

申请日：2007-03-16

申请人： Craig L. Schmidt ,  Lonny V. Cabelka ,  Joseph A. Ballis

发明人： Craig L. Schmidt ,  Lonny V. Cabelka ,  Joseph A. Ballis

IPC分类号： A61B19/00

CPC分类号： A61N1/378 ,  A61N1/3956

摘要： A power control circuit for an implantable medical device is presented. The power control circuit includes a first high rate cell, a second high rate cell, at least one resistive load, and at least one control circuit. The at least one resistive load is connected between the first and the second high rate cells. The at least one control circuit is coupled to the first and the second high rate cells.

摘要翻译： 提出了一种用于植入式医疗设备的功率控制电路。 功率控制电路包括第一高速率单元，第二高速单元，至少一个电阻负载和至少一个控制电路。 至少一个电阻性负载连接在第一和第二高速率单元之间。 至少一个控制电路耦合到第一和第二高速率单元。

公开(公告)号：US5265588A

公开(公告)日：1993-11-30

申请号：US823107

申请日：1992-01-15

申请人： Gary E. Nelson ,  Eric Persson ,  Joseph A. Ballis

发明人： Gary E. Nelson ,  Eric Persson ,  Joseph A. Ballis

IPC分类号： A61N1/39

CPC分类号： A61N1/3925 ,  A61N1/3981 ,  Y10S977/948

摘要： A battery powered cardioverter or defibrillator employing output capacitors for delivery of cardioversion or defibrillation pulses. The capacitors are charged by means of a step-up transformer, coupled and uncoupled from the battery by means of a voltage controlled oscillator which varies its off and on times as a function of the voltage on the battery and the voltage stored on the output capacitor to allow for rapid charging of the capacitor even under conditions of battery depletion. The voltage controlled oscillator is constructed to provide a highly accurate timing signal with a low current drain.

摘要翻译： 一个电池供电的心律转复器或除颤器，采用输出电容器传送心脏复律或除颤脉冲。 电容器通过升压变压器充电，通过压控振荡器与电池耦合和分离，电压控制振荡器根据电池电压和存储在输出电容器上的电压来改变其关闭和接通时间 即使在电池耗尽的情况下也允许电容器的快速充电。 压控振荡器被构造成提供具有低电流消耗的高精度定时信号。

公开(公告)号：US08027728B2

公开(公告)日：2011-09-27

申请号：US11687457

申请日：2007-03-16

申请人： Craig L. Schmidt ,  Lonny V. Cabelka ,  Joseph A. Ballis

发明人： Craig L. Schmidt ,  Lonny V. Cabelka ,  Joseph A. Ballis

IPC分类号： A61N1/08

CPC分类号： A61N1/378 ,  A61N1/3956

摘要： A power control circuit for an implantable medical device is presented. The power control circuit includes a first high rate cell, a second high rate cell, at least one resistive load, and at least one control circuit. The at least one resistive load is connected between the first and the second high rate cells. The at least one control circuit is coupled to the first and the second high rate cells.

摘要翻译： 提出了一种用于植入式医疗设备的功率控制电路。 功率控制电路包括第一高速率单元，第二高速单元，至少一个电阻负载和至少一个控制电路。 至少一个电阻性负载连接在第一和第二高速率单元之间。 至少一个控制电路耦合到第一和第二高速率单元。

公开(公告)号：US3968802A

公开(公告)日：1976-07-13

申请号：US543978

申请日：1975-01-24

申请人： Joseph A. Ballis

发明人： Joseph A. Ballis

IPC分类号： A61N1/37 ,  A61N1/39 ,  A61N1/36

CPC分类号： A61N1/3931 ,  A61N1/37 ,  A61N1/3718 ,  Y10S128/908

摘要： A cautery protection circuit is disclosed for use with a heart pacemaker and comprises circuit elements for preventing those signals induced within the output portion of the heart pacemaker circuit by an electric field established by cautery procedures, from being rendered unsymmetrical in wave form, thereby minimizing the possible adverse effects of such induced signals, e.g. fibrillation of the patient's heart. In one embodiment, a diode is disposed from the emitter to the collector of a pacemaker output transistor to offset the unsymmetrical conduction of the output transistor. In another embodiment, a capacitor of a value presenting an effective short circuit to the frequencies of interest, is inserted across the output transistor to shunt thereabout signals induced by cautery procedures. In addition, the cautery protection circuit includes a suitable inductive element to reduce the high frequency current flow to the pacemaker electrodes to a level below that at which the patient's heart may be excited and further, a capacitor to detune the resonant circuit established by the capacitances of the diodes and the transistor junction, and the inductive element, from the frequencies of interest.

摘要翻译： 公开了一种与心脏起搏器一起使用的烧灼保护电路，并且包括电路元件，用于通过由烧灼过程建立的电场来防止心脏起搏器电路的输出部分内感应的信号，使波形不对称，从而最小化 这种诱发信号的可能不利影响，例如 病人心脏颤动。 在一个实施例中，二极管从起搏器输出晶体管的发射极到集电极设置以偏移输出晶体管的不对称导通。 在另一个实施例中，将一个具有与感兴趣的频率有效短路的值的电容器插入输出晶体管中，以分流由烧灼过程引起的信号。 此外，烧灼保护电路包括适当的感应元件，以减少起搏器电极的高频电流流到低于患者心脏可能被激发的电平，并且进一步地，使由电容建立的谐振电路失谐的电容器 的二极管和晶体管结，以及感应元件。