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    Implantable lead having multi-planar spiral inductor filter
    13.
    发明授权
    Implantable lead having multi-planar spiral inductor filter 有权

    公开(公告)号：US09827415B2

    公开(公告)日：2017-11-28

    申请号：US14316896

    申请日：2014-06-27

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Warren S. Dabney ,  Christine A. Frysz ,  Richard L. Brendel

    IPC: A61N1/00 ,  A61N1/08 ,  A61N1/05 ,  H01F17/02 ,  H03H1/00

    CPC classification number: A61N1/08 ,  A61N1/05 ,  A61N1/086 ,  H01F17/02 ,  H03H1/0007

    Abstract: A multilayer helical wave filter having a primary resonance at a selected RF diagnostic or therapeutic frequency or frequency range, includes an elongated conductor forming at least a portion of an implantable medical lead. The elongated conductor includes a first helically wound segment having at least one planar surface, a first end and a second end, which forms a first inductive component, and a second helically wound segment having at least one planar surface, a first end and a second end, which forms a second inductive element. The first and second helically wound segments are wound in the same longitudinal direction and share a common longitudinal axis. Planar surfaces of the helically wound segments face one another, and a dielectric material is disposed between the facing planar surfaces of the helically wound segments and between adjacent coils of the helically wound segments, thereby forming a capacitance.

    RF FILTER FOR AN ACTIVE MEDICAL DEVICE (AMD) FOR HANDLING HIGH RF POWER INDUCED IN AN ASSOCIATED IMPLANTED LEAD FROM AN EXTERNAL RF FIELD
    15.
    发明申请
    RF FILTER FOR AN ACTIVE MEDICAL DEVICE (AMD) FOR HANDLING HIGH RF POWER INDUCED IN AN ASSOCIATED IMPLANTED LEAD FROM AN EXTERNAL RF FIELD 有权
    用于处理来自外部RF场的相关外延引线中感应的高RF功率的有源医疗设备（AMD）的射频滤波器

    公开(公告)号：US20150217111A1

    公开(公告)日：2015-08-06

    申请号：US14688302

    申请日：2015-04-16

    Applicant: Greatbatch Ltd.

    Inventor： 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

    IPC: A61N1/08 ,  A61N1/375

    CPC classification number: A61N1/08 ,  A61N1/086 ,  A61N1/3718 ,  A61N1/3754 ,  A61N1/3758 ,  H01G4/005 ,  H01G4/12 ,  H01G4/30 ,  H01G4/35 ,  H03H1/0007

    Abstract: 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 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.

    Abstract translation: AIMD包括导电壳体，具有绝缘体的导电套圈密封密封套圈开口。 导电通路密封并通过绝缘体设置。 滤波电容器设置在壳体内并且具有支撑交替插入的至少两个有源和两个接地电极板的电介质体，其中所述至少两个有源电极板电连接到装置侧的导电路径，并且所述至少两个 接地电极板电耦合到套圈和/或导电壳体。 电介质体的介电常数小于1000，电容为10至20,000皮​​法。 滤波电容器被配置为通过低ESR对MRI高RF脉冲功率进行EMI滤波，其中以RF射频脉冲频率或频率范围的滤波电容器的ESR小于2.0欧姆。

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