Invention Grant
US08275466B2 Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices
有权
带阻滤波器采用电容器和电感器电路来增强主动医疗器械的MRI兼容性
- Patent Title: Band stop filter employing a capacitor and an inductor tank circuit to enhance MRI compatibility of active medical devices
- Patent Title (中): 带阻滤波器采用电容器和电感器电路来增强主动医疗器械的MRI兼容性
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Application No.: US12776617Application Date: 2010-05-10
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Publication No.: US08275466B2Publication Date: 2012-09-25
- Inventor: Henry R. Halperin , Robert A. Stevenson
- Applicant: Henry R. Halperin , Robert A. Stevenson
- Applicant Address: US NY Clarence
- Assignee: Greatbatch Ltd.
- Current Assignee: Greatbatch Ltd.
- Current Assignee Address: US NY Clarence
- Agent Michael F. Scalise
- Main IPC: A61B5/055
- IPC: A61B5/055
Abstract:
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.
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