Christopher C. Stancer,Steven J. Fraasch,Anthony C. French,Kent E. Samuelson,Farren L. Forcier
申请号：
US12507976
公开号：
US08428744B2
申请日:
2009.07.23
申请国别(地区):
US
年份:
2013
代理人:
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.
