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Method and apparatus for disconnecting the tip electrode during MRI
专利权人:
Masoud Ameri
发明人:
Masoud Ameri,Greg P. Carpenter,David C. Olson
申请号:
US13186194
公开号:
US08554335B2
申请日:
2011.07.19
申请国别(地区):
US
年份:
2013
代理人:
摘要:
A medical device includes a pulse generator, a lead, and an electrode. The lead includes an electrode and a lead conductor connecting the pulse generator with the electrode via first and second conductive paths. The medical device includes first and second switches. The first switch is disposed along the first conductive path and includes an open state in the presence of a magnetic field and a closed state in the absence of the magnetic field. The second switch is disposed along the second conductive path and includes an open state when a voltage applied across the second switch is at or below a threshold voltage and a closed state when the voltage applied across the second switch exceeds a threshold voltage.
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