Jin Zhang,J. Christopher Moulder,George I. Isaac,Gabriel A. Mouchawar,Peter Boileau,Ingmar Viohl
申请号：
US12617532
公开号：
US08886319B2
申请日:
2009.11.12
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A filtering scheme for an implantable medical device mitigates potentially adverse effects that may be caused by MRI-induced signals. In some aspects filtering is provided to attenuate MRI-induced signals on an implanted cardiac lead that is coupled to an implanted device. In some aspects the filter may be configured to complement a capacitor circuit (e.g., a feedthrough capacitor) that reduces the amount of EMI that enters the implanted device via the cardiac lead. In some implementations the filter consists of a LC tank circuit and a series LC circuit, where the LC tank circuit is in series with the cardiac lead and a cardiac stimulation circuit and the series LC circuit is in a shunt configuration across the cardiac stimulation circuit.
