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1.发明授权Time domain reflectometer impedance sensor method of use and implantable cardiac stimulator using same 失效时域反射计阻抗传感器的使用方法和可植入式心脏刺激器的使用方法
公开(公告)号：US5361776A
公开(公告)日：1994-11-08
申请号：US104382
申请日：1993-08-06
CPC分类号： A61B5/0538 , A61B5/0535 , A61N1/372 , A61N1/375 , A61N1/3931 , A61N2001/083
摘要： A time domain reflectometry (TDR) impedance sensor is provided for measuring body impedance along a lead or catheter implanted in a patient's cardiovascular system. The TDR sensor applies an electrical stimulus to the lead and measures reflections echoed from impedance variations along and distal to the lead, which are superimposed on the applied stimulus. The measured signals may be analyzed with respect to time-of-flight and distance along the lead to detect a plurality of physiologically meaningful signals.
摘要翻译： 提供了时域反射（TDR）阻抗传感器，用于沿植入患者心血管系统的导联或导管测量身体阻抗。 TDR传感器对引线施加电刺激，并测量从引线的沿着和远端的阻抗变化回波的反射，其叠加在施加的刺激上。 可以相对于飞行时间和沿着引线的距离来分析测量的信号，以检测多个生理上有意义的信号。
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公开(公告)号：US08428744B2
公开(公告)日：2013-04-23
申请号：US12507976
申请日：2009-07-23
申请人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
发明人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
IPC分类号： A61N1/00
CPC分类号： A61N1/37223 , A61N1/3718 , H03H1/0007 , H03H7/06 , H03H7/175
摘要： This disclosure describes techniques for reducing, and possibly eliminating, adverse effects caused by signals induced on an inductive antenna of an implanted medical device by varying magnetic fields from a source of interference, such as the gradient magnetic fields applied during an MRI procedure. For example, the implantable medical device includes an inductive antenna that receives signals via inductive coupling, a filter circuit that attenuates signals induced on the inductive antenna by varying magnetic fields generated from a source of interference and substantially passes signals induced on the inductive antenna by varying magnetic fields generated by an expected source and a telemetry module that processes the signals from the filter circuit.
摘要翻译： 本公开描述了通过改变来自干扰源的磁场（例如在MRI过程中施加的梯度磁场）来减少并且可能消除由植入的医疗装置的感应天线上感应的信号引起的不利影响的技术。 例如，可植入医疗装置包括通过电感耦合接收信号的感应天线，通过改变从干扰源产生的磁场来衰减在感应天线上感应的信号的滤波器电路，并通过改变 由预期源产生的磁场和处理来自滤波器电路的信号的遥测模块。
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公开(公告)号：US06925331B2
公开(公告)日：2005-08-02
申请号：US10261314
申请日：2002-09-30
申请人： Kent E. Samuelson , Michael T. Hemming , Michael W. Heinks , Ross O. Starkson , Lori Durose-Schrimpf , John D. Wahlstrand
发明人： Kent E. Samuelson , Michael T. Hemming , Michael W. Heinks , Ross O. Starkson , Lori Durose-Schrimpf , John D. Wahlstrand
IPC分类号： A61B5/00 , A61B5/0402 , A61N1/372 , A61N1/365
CPC分类号： A61B5/0402 , A61B5/0006 , A61B5/7264 , A61N1/37247
摘要： A system and method for acquiring and processing an EGM signal during a pacing event, wherein a unique converter code is generated upon digitizing of the EGM signal and encrypted in the EGM signal to demarcate a transient event. The system further provides dynamic filtering of the EGM signal and subsequent detection of an intrinsic event signal during the pacing event, from which rhythm events may be diagnosed and classified.
摘要翻译： 一种用于在起搏事件期间获取和处理EGM信号的系统和方法，其中在EGM信号数字化并在EGM信号中加密以产生瞬时事件时产生唯一转换器代码。 该系统进一步提供EGM信号的动态滤波以及随后在起搏事件期间检测固有事件信号，从中可以诊断和分类节律事件。
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公开(公告)号：US20110022123A1
公开(公告)日：2011-01-27
申请号：US12507976
申请日：2009-07-23
申请人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
发明人： Christopher C. Stancer , Steven J. Fraasch , Anthony C. French , Kent E. Samuelson , Farren L. Forcier
CPC分类号： A61N1/37223 , A61N1/3718 , H03H1/0007 , H03H7/06 , H03H7/175
摘要： This disclosure describes techniques for reducing, and possibly eliminating, adverse effects caused by signals induced on an inductive antenna of an implanted medical device by varying magnetic fields from a source of interference, such as the gradient magnetic fields applied during an MRI procedure. For example, the implantable medical device includes an inductive antenna that receives signals via inductive coupling, a filter circuit that attenuates signals induced on the inductive antenna by varying magnetic fields generated from a source of interference and substantially passes signals induced on the inductive antenna by varying magnetic fields generated by an expected source and a telemetry module that processes the signals from the filter circuit.
摘要翻译： 本公开描述了通过改变来自干扰源的磁场（例如在MRI过程中施加的梯度磁场）来减少并且可能消除由植入的医疗装置的感应天线上感应的信号引起的不利影响的技术。 例如，可植入医疗装置包括通过电感耦合接收信号的感应天线，通过改变从干扰源产生的磁场来衰减在感应天线上感应的信号的滤波器电路，并通过改变 由预期源产生的磁场和处理来自滤波器电路的信号的遥测模块。
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公开(公告)号：US5350407A
公开(公告)日：1994-09-27
申请号：US998962
申请日：1992-12-30
CPC分类号： A61N1/37252 , A61N1/375 , A61N2001/37294
摘要： A method and apparatus for selectively controlling an oscillator-driven implantable stimulator to operate either in a quiescent state, in response to a command from an external communicating device, or in an active state in response either to removal of an activation pin or to an activating command from an external communicating device. Upon completion of manufacture of the stimulator, and before being placed on a shelf to await implantation in a patient, the activation pin is inserted into the stimulator and the external communicating device is triggered to send a deactivating command to the stimulator. The stimulator responds by generally disabling current sources to stimulator circuits, while maintaining current sources to a wake up circuit of the stimulator that is associated with communication operations. The stimulator is activated by subsequently transmitting an activating command from an external communicating device to the implantable stimulator, or by removing the activation pin.
摘要翻译： 一种用于响应于来自外部通信设备的命令或响应于移除激活引脚或激活的激活状态而选择性地控制振荡器驱动的可植入刺激器在静止状态下操作的方法和装置 命令从外部通信设备。 在完成刺激器的制造之后，并且在被放置在架子上以等待患者植入之前，激活销被插入到刺激器中，并且外部通信装置被触发以向激励器发送去激活命令。 刺激器通常将电流源禁用于刺激器电路，同时将电流源保持到与通信操作相关联的刺激器的唤醒电路。 刺激器通过随后从外部通信装置传送到可植入刺激器的激活命令或通过移除激活销来激活。
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