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Implantable medical leads, systems, and related methods for creating a high impedance within a conduction path in the presence of a magnetic field of a given strength
专利权人:
Inc.;Medtronic
发明人:
Richard T. Stone,Spencer M. Bondhus,Walter Doell,John D. Welter,Guillaume Schmit,Niklaus Schneeberger
申请号:
US14684628
公开号:
US09579502B2
申请日:
2015.04.13
申请国别(地区):
US
年份:
2017
代理人:
摘要:
Implantable medical systems include implantable medical leads that have magnetic orientation-independent magnetically actuated switches that are placed in the conduction path to the electrode of the lead. Thus, regardless of the orientation of a substantial magnetic field like that from an MRI machine to the lead and switch within the lead, the switch opens when in the presence of that substantial magnetic field. The switch may be placed in close proximity to the electrode such that the opening of the switch disconnects the electrode from the majority of the conduction path which thereby produces a high impedance for RF current and reduces the amount of heating that may occur at the electrode when in the presence of substantial levels of RF electromagnetic energy as may occur within an MRI machine.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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