Band Stop Filter Employing a Capacitor and an Inductor Tank Circuit to Enhance MRI Compatibility of Active Medical Devices
    163.
    发明申请
    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池电路来增强主动医疗器械的MRI兼容性

    公开(公告)号:US20120188027A1

    公开(公告)日:2012-07-26

    申请号:US13440382

    申请日:2012-04-05

    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 is resonant at a selected frequency. 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.

    Abstract translation: 为有源医疗装置(AMD)的引线提供带阻滤波器。 带阻滤波器包括与电感并联的电容器。 并联电容器和电感器与AMD的引线串联放置,其中选择电容和电感值,使得带阻滤波器以选定的频率谐振。 电感器的Q可以相对最大化,并且电容器的Q可以相对最小化,以减小带阻滤波器的总体Q,以衰减沿着选定频率的范围通过引线的电流。 在优选形式中,带阻滤波器被集成到用于有源可植入医疗装置的TIP和/或RING电极中。

    MULTILAYER HELICAL WAVE FILTER FOR MEDICAL THERAPEUTIC OR DIAGNOSTIC APPLICATIONS
    168.
    发明申请
    MULTILAYER HELICAL WAVE FILTER FOR MEDICAL THERAPEUTIC OR DIAGNOSTIC APPLICATIONS 有权
    用于医疗治疗或诊断应用的多层螺旋形滤波器

    公开(公告)号:US20120029342A1

    公开(公告)日:2012-02-02

    申请号:US13193501

    申请日:2011-07-28

    CPC classification number: A61N1/05 A61N1/086 A61N1/3718 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.

    Abstract translation: 在选定的RF诊断或治疗频率或频率范围内具有初级共振的多层螺旋波滤波器包括形成可植入医疗引线的至少一部分的细长导体。 细长导体包括具有至少一个平坦表面的第一螺旋缠绕段,形成第一感应组件的第一端和第二端,以及具有至少一个平坦表面的第二螺旋缠绕段,第一端和第二端 端部,其形成第二电感元件。 第一和第二螺旋缠绕段在相同的纵向缠绕并共享共同的纵向轴线。 螺旋缠绕段的平面表面彼此面对,并且电介质材料设置在螺旋缠绕段的相对的平坦表面之间和螺旋缠绕段的相邻线圈之间,从而形成电容。

    INTEGRATED TANK FILTER FOR A MEDICAL THERAPEUTIC DEVICE
    170.
    发明申请
    INTEGRATED TANK FILTER FOR A MEDICAL THERAPEUTIC DEVICE 有权
    用于医疗治疗设备的集成过滤器

    公开(公告)号:US20110245644A1

    公开(公告)日:2011-10-06

    申请号:US13114555

    申请日:2011-05-24

    Abstract: A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK 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 TANK filter is resonant at a selected frequency. 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 TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device.

    Abstract translation: 为主动医疗装置(AMD)的引线提供TANK滤波器。 TANK滤波器包括与电感并联的电容器。 并联电容器和电感器与AMD的引线串联放置,其中选择电容和电感值,使得TANK滤波器以选定的频率谐振。 电感器的Q可以相对最大化,并且电容器的Q可以相对最小化,以减小TANK滤波器的总体Q,以衰减沿着选定频率的范围通过引线的电流。 在优选形式中,TANK滤波器被集成到用于有源可植入医疗装置的TIP和/或RING电极中。

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