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    High-voltage electrical insulation for use in active implantable medical devices circuit board connectors
    82.
    发明授权
    High-voltage electrical insulation for use in active implantable medical devices circuit board connectors 有权

    公开(公告)号：US12218458B2

    公开(公告)日：2025-02-04

    申请号：US18376687

    申请日：2023-10-04

    Applicant: Greatbatch Ltd.

    Inventor： Thomas Marzano ,  Keith W. Seitz ,  Christine A. Frysz ,  Robert A. Stevenson

    IPC: H01R13/52 ,  A61N1/375 ,  H01G4/35 ,  H01R13/426 ,  H01R13/719

    Abstract: A circuit board for an active implantable medical device (AIMD) has a circuit board land connected to at least one electrical circuit. A hermetic feedthrough terminal pin connector for the AIMD includes an electrical insulator hermetically sealed to an opening of an electrically conductive ferrule. A terminal pin of the feedthrough extends outwardly beyond the insulator. A terminal pin connector has an electrically conductive connector housing that is connected to the circuit board land by an electrical connection material. At least one electrically conductive prong supported by the connector housing contacts and compresses against the feedthrough terminal pin to thereby make a removable electrical connection between the circuit board and the terminal pin. An insulative material loaded with electrically insulative nanoparticles coats at least a portion of the sidewall of the connector housing and the electrical connection material connecting the connector housing to the circuit board land.

    RF switch and an EMI filter capacitor for an AIMD connected in series between a feedthrough active conductor and system ground
    84.
    发明授权
    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：US11185705B2

    公开(公告)日：2021-11-30

    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 ,  A61N1/362 ,  A61N1/36

    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).

    Electrical connection for an AIMD EMI filter utilizing an anisotropic conductive layer
    87.
    发明授权
    Electrical connection for an AIMD EMI filter utilizing an anisotropic conductive layer 有权

    公开(公告)号：US10905888B2

    公开(公告)日：2021-02-02

    申请号：US16362043

    申请日：2019-03-22

    Applicant: Greatbatch Ltd.

    Inventor： Robert A. Stevenson ,  Christine A. Frysz ,  Keith W. Seitz ,  Brian P. Hohl ,  Marc Gregory Martino

    IPC: A61N1/375 ,  H01G4/35 ,  H01G4/236 ,  H01G4/008 ,  H01G4/12

    Abstract: A filter feedthrough for an AIMD includes ferrule with an insulator hermetically sealing a ferrule opening, both cooperatively separating a body fluid side from a device side. A first conductive pathway is hermetically sealed to and disposed through the insulator. A feedthrough capacitor is disposed on the device side and includes at least one active electrode plate disposed parallel and spaced from at least one ground electrode plate within a capacitor dielectric. A capacitor active metallization is electrically connected to the active electrode plate and is in non-electrically conductive relation with the ground electrode plate. A capacitor ground metallization is electrically connected to the ground electrode plate and is in non-electrically conductive relation with the active electrode plate. An anisotropic conductive layer is disposed on the device side. The anisotropic conductive layer electrically connects the capacitor active metallization to the first conductive pathway.

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