- 专利标题: RF filter on a circuit board for an active medical device (AMD) for handling high RF power induced in an associated implanted lead from an external RF field
-
申请号: US15163241申请日: 2016-05-24
-
公开(公告)号: US09764129B2公开(公告)日: 2017-09-19
- 发明人: Robert A. Stevenson , Robert Shawn Johnson , Warren S. Dabney , Thomas Marzano , Richard L. Brendel , Christopher Michael Williams , Holly Noelle Moschiano , Keith W. Seitz , John E. Roberts
- 申请人: Greatbatch Ltd.
- 申请人地址: US NY Clarence
- 专利权人: Greatbatch Ltd.
- 当前专利权人: Greatbatch Ltd.
- 当前专利权人地址: US NY Clarence
- 代理商 Michael F. Scalise
- 主分类号: A61N1/08
- IPC分类号: A61N1/08 ; A61N1/375 ; A61N1/37 ; H01G4/005 ; H01G4/12 ; H01G4/30 ; H01G4/35 ; H03H1/00
摘要:
An AIMD includes a conductive housing, an electrically conductive ferrule with an insulator hermetically sealing the ferrule opening. A conductive pathway is hermetically sealed and disposed through the insulator. A filter capacitor is disposed on a circuit board within the housing and has a dielectric body supporting at least two active and two ground electrode plates interleaved, wherein the at least two active electrode plates are electrically connected to the conductive pathway on the device side, and the at least two ground electrode plates are electrically coupled to either the ferrule and/or the conductive housing. The dielectric body has a dielectric constant less than 1000 and a capacitance of between 10 and 20,000 picofarads. The filter capacitor is configured for EMI filtering of MRI high RF pulsed power by a low ESR, wherein the ESR of the filter capacitor at an MRI RF pulsed frequency or range of frequencies is less than 2.0 ohms.
公开/授权文献
信息查询