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。

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

IPC分类号： A61N1/08 ,  H03H7/00

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。