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Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices
专利权人:
Henry R. Halperin;Robert A. Stevenson
发明人:
Henry R. Halperin,Robert A. Stevenson
申请号:
US12776617
公开号:
US08275466B2
申请日:
2010.05.10
申请国别(地区):
US
年份:
2012
代理人:
摘要:
A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter has a Q with the resultant 3 dB bandwidth being in the megahertz range. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device.
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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