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    LOW IMPEDANCE OXIDE RESISTANT GROUNDED CAPACITOR FOR AN AIMD
    22.
    发明申请
    LOW IMPEDANCE OXIDE RESISTANT GROUNDED CAPACITOR FOR AN AIMD 有权
    用于AIMD的低阻抗氧化物接地电容器

    公开(公告)号：US20140194964A1

    公开(公告)日：2014-07-10

    申请号：US14202653

    申请日：2014-03-10

    Applicant: GREATBATCH LTD.

    Inventor： Jason Woods ,  Richard L. Brendel ,  Robert A. Stevenson ,  Christopher M. Williams ,  Robert Naugler ,  Christine A. Frysz

    IPC: A61N1/08

    CPC classification number: A61N1/3754 ,  H01G2/02 ,  H01G4/228 ,  H01G4/35 ,  H01G4/40 ,  H01R13/7195 ,  H03H1/0007 ,  H03H7/1766 ,  H03H2001/0042 ,  H03H2001/0085

    Abstract: A hermetically sealed filtered feedthrough assembly for an AIMD includes an insulator hermetically sealed to a conductive ferrule or housing. A conductor is hermetically sealed and disposed through the insulator in non-conductive relation to the conductive ferrule or housing between a body fluid side and a device side. A feedthrough capacitor is disposed on the device side. A first low impedance electrical connection is between a first end metallization of the capacitor and the conductor. A second low impedance electrical connection is between a second end metallization of the capacitor and the ferrule or housing. The second low impedance electrical connection includes an oxide-resistant metal addition attached directly to the ferrule or housing and an electrical connection coupling the second end metallization electrically and physically directly to the oxide-resistant metal addition.

    Abstract translation: 用于AIMD的气密密封的过滤馈通组件包括密封到导电套圈或壳体的绝缘体。 导体被气密地密封并且通过绝缘体以非导电关系设置在导体套管或壳体之间，在体液侧和器件侧之间。 馈通电容器设置在器件侧。 第一低阻抗电连接在电容器的第一端金属化和导体之间。 第二低阻抗电连接在电容器的第二端金属化和套圈或壳体之间。 第二低阻抗电连接包括直接连接到套圈或壳体的耐氧化金属添加剂和将第二端金属化物电和物理直接耦合到耐氧化金属添加物的电连接。

    RF Switch And An EMI Filter Capacitor For An AIMD Connected In Series Between A Feedthrough Active Conductor And System Ground
    25.
    发明申请
    RF Switch And An EMI Filter Capacitor For An AIMD Connected In Series Between A Feedthrough Active Conductor And System Ground 有权

    公开(公告)号：US20210038902A1

    公开(公告)日：2021-02-11

    申请号：US17077337

    申请日：2020-10-22

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Keith W. Seitz ,  Jason Woods ,  Christine A. Frysz

    IPC: A61N1/375 ,  A61N1/39

    Abstract: An enhanced RF switchable filtered feedthrough for real-time identification of the electrical and physical integrity of an implanted AIMD lead includes a DOUBLE POLE RF switch disposed on the device side. Additionally, the RF switchable filtered feedthrough can optionally include transient voltage suppressors (TVS) and an MRI mode. In an embodiment, a DOUBLE POLE RF switch selectively disconnects EMI filter capacitors so that an RF test/interrogation signal is sent from the AIMD down into an implanted lead(s). The reflected RF signal is then analyzed to assess implanted lead integrity including lead body anomalies, lead insulation defects, and/or lead conductor defects. The Double Pole switch is configured to be controlled by an AIMD control signal to switch between FIRST and SECOND THROW positions. In the FIRST THROW position a conductive leadwire hermetically sealed to and disposed through an insulator is electrically connected to a filter capacitor, which is then electrically connected to the ferrule of a hermetic feedthrough of an AIMD. In the FIRST THROW position, EMI energy imparted to a body fluid side implanted lead can be diverted to the housing of the AIMD. In the SECOND THROW position the conductive leadwire is electrically connected to an RF source disposed on the device side of the housing of the AIMD. While in the SECOND THROW position, a reflective return signal from the RF source is measured and analyzed to determine if the implanted AIMD lead exhibits any life-threatening performance issues, such as lead body anomalies, lead insulation defects or changes, or even defective, fractured or dislodged lead conductors. In another embodiment, a SINGLE POLE RF switch is configured to disconnect filter capacitors during the delivery of a high-voltage cardioversion shock from an implantable cardioverter defibrillator. Dis-connection of the filter capacitor either reduces or eliminates filter capacitor pulse inrush currents, which allows for the use of standard low-voltage filter capacitors instead of larger and more expensive high-voltage pulse rated filter capacitors. Dis-connection of the filter capacitor also allows for an RF interrogation pulse to be applied to the implanted lead in real-time (for example, pre-set intervals throughout the day).

    AIMD RF SWITCH TO CONNECT AN ICD DEFIBRILLATION ELECTRODE CONDUCTOR EITHER TO A FILTER CAPACITOR OR TO AN RF SOURCE CONFIGURED TO DETECT A DEFECTIVE IMPLANTED LEAD
    26.
    发明申请
    AIMD RF SWITCH TO CONNECT AN ICD DEFIBRILLATION ELECTRODE CONDUCTOR EITHER TO A FILTER CAPACITOR OR TO AN RF SOURCE CONFIGURED TO DETECT A DEFECTIVE IMPLANTED LEAD 审中-公开

    公开(公告)号：US20200246625A1

    公开(公告)日：2020-08-06

    申请号：US16854138

    申请日：2020-04-21

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Keith W. Seitz ,  Jason Woods ,  Christine A. Frysz

    IPC: A61N1/375 ,  A61N1/39

    Abstract: An enhanced RF switchable filtered feedthrough for real-time identification of the electrical and physical integrity of an implanted AIMD lead includes a DOUBLE POLE RF switch disposed on the device side. Additionally, the RF switchable filtered feedthrough can optionally include transient voltage suppressors (TVS) and an MRI mode. In an embodiment, a DOUBLE POLE RF switch selectively disconnects EMI filter capacitors so that an RF test/interrogation signal is sent from the AIMD down into an implanted lead(s). The reflected RF signal is then analyzed to assess implanted lead integrity including lead body anomalies, lead insulation defects, and/or lead conductor defects. The Double Pole switch is configured to be controlled by an AIMD control signal to switch between FIRST and SECOND THROW positions. In the FIRST THROW position a conductive leadwire hermetically sealed to and disposed through an insulator is electrically connected to a filter capacitor, which is then electrically connected to the ferrule of a hermetic feedthrough of an AIMD. In the FIRST THROW position, EMI energy imparted to a body fluid side implanted lead can be diverted to the housing of the AIMD. In the SECOND THROW position the conductive leadwire is electrically connected to an RF source disposed on the device side of the housing of the AIMD. While in the SECOND THROW position, a reflective return signal from the RF source is measured and analyzed to determine if the implanted AIMD lead exhibits any life-threatening performance issues, such as lead body anomalies, lead insulation defects or changes, or even defective, fractured or dislodged lead conductors. In another embodiment, a SINGLE POLE RF switch is configured to disconnect filter capacitors during the delivery of a high-voltage cardioversion shock from an implantable cardioverter defibrillator. Dis-connection of the filter capacitor either reduces or eliminates filter capacitor pulse inrush currents, which allows for the use of standard low-voltage filter capacitors instead of larger and more expensive high-voltage pulse rated filter capacitors. Dis-connection of the filter capacitor also allows for an RF interrogation pulse to be applied to the implanted lead in real-time (for example, pre-set intervals throughout the day).

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