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    SELF-CENTERING CERAMIC WASHER
    1.
    发明申请
    SELF-CENTERING CERAMIC WASHER 有权

    公开(公告)号：US20250114622A1

    公开(公告)日：2025-04-10

    申请号：US18975719

    申请日：2024-12-10

    Applicant: Greatbatch Ltd.

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

    IPC: A61N1/375 ,  F16B43/00 ,  H01G4/35 ,  H01R13/52 ,  H01R13/533 ,  H05K1/02

    Abstract: A self-centering ceramic washer is positioned between a feedthrough and a filter circuit board. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.

    Shaped insulating washer that prevents misalignment when positioned between a filter capacitor and a feedthrough
    4.
    发明授权
    Shaped insulating washer that prevents misalignment when positioned between a filter capacitor and a feedthrough 有权

    公开(公告)号：US11980766B2

    公开(公告)日：2024-05-14

    申请号：US18377609

    申请日：2023-10-06

    Applicant: Greatbatch Ltd.

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

    IPC: A61N1/05 ,  A61N1/375

    CPC classification number: A61N1/3754 ,  A61N1/05

    Abstract: A self-centering washer is positioned between the feedthrough and filter capacitor of a filtered feedthrough. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.

    Shaped Insulating Washer That Prevents Misalignment When Positioned Between A Filter Capacitor And A Feedthrough
    5.
    发明公开
    Shaped Insulating Washer That Prevents Misalignment When Positioned Between A Filter Capacitor And A Feedthrough 审中-公开

    公开(公告)号：US20240115868A1

    公开(公告)日：2024-04-11

    申请号：US18377609

    申请日：2023-10-06

    Applicant: Greatbatch Ltd.

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

    IPC: A61N1/375 ,  A61N1/05

    CPC classification number: A61N1/3754 ,  A61N1/05

    Abstract: A self-centering washer is positioned between the feedthrough and filter capacitor of a filtered feedthrough. The washer has openings through which first and second terminal pins extend. A first opening has an inner arcuate portion contacting the first terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. A second opening has an inner arcuate portion contacting the second terminal pin and an outer perimeter portion exposing the braze sealing the terminal pin to the insulator. In an imaginary configuration with the first and second washer openings superimposed one on top of the other, the cumulative arcuate distance of the inner arcuate portions about one of the terminal pins, subtracting overlap, results in a gap between the superimposed washer openings that is less than a diameter of the first and second terminal pins so that the washer is prevented from lateral movement.

    ECA oxide-resistant connection to a hermetic seal ferrule for an active implantable medical device
    6.
    发明授权
    ECA oxide-resistant connection to a hermetic seal ferrule for an active implantable medical device 有权

    公开(公告)号：US11633612B2

    公开(公告)日：2023-04-25

    申请号：US17181542

    申请日：2021-02-22

    Applicant: Greatbatch Ltd.

    Inventor： Christine A. Frysz ,  Robert A. Stevenson ,  Jason Woods

    IPC: A61N1/375 ,  H01G4/224 ,  H01G4/35 ,  H01B17/62 ,  H01G2/12 ,  H01G4/228 ,  H01G13/00 ,  H01B19/04 ,  H01G2/10

    Abstract: A hermetically sealed feedthrough assembly for an active implantable medical device having an oxide-resistant electrical attachment for connection to an EMI filter, an EMI filter circuit board, an AIMD circuit board, or AIMD electronics. The oxide-resistant electrical attachment, including an oxide-resistant sputter layer 165 is disposed on the device side surface of the hermetic seal ferrule over which an ECA stripe is provided. The ECA stripe may comprise one of a thermal-setting electrically conductive adhesive, an electrically conductive polymer, an electrically conductive epoxy, an electrically conductive silicone, an electrically conductive polyimides, or an electrically conductive polyimide, such as those manufactured by Ablestick Corporation. The oxide-free electrical attachment between the ECA stripe and the filter or AIMD circuits may comprise one of gold, platinum, palladium, silver, iridium, rhenium, rhodium, tantalum, tungsten, niobium, zirconium, vanadium, and combinations or alloys thereof.

    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
    7.
    发明授权
    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 有权

    公开(公告)号：US10828498B2

    公开(公告)日：2020-11-10

    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 ,  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).

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