中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

187 records (took 0.036 seconds)

    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
    82.
    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).

    Filtered feedthrough assembly having an MLCC filter capacitor on an AIMD circuit board attached to the ferrule of a hermetic feedthrough
    83.
    发明授权
    Filtered feedthrough assembly having an MLCC filter capacitor on an AIMD circuit board attached to the ferrule of a hermetic feedthrough 有权

    公开(公告)号：US10722706B2

    公开(公告)日：2020-07-28

    申请号：US16106937

    申请日：2018-08-21

    Applicant: Greatbatch Ltd.

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

    IPC: A61N1/08 ,  H05K9/00 ,  A61N1/37 ,  A61N1/375 ,  H05K5/00 ,  H05K1/18 ,  H03H7/01 ,  H03H1/00 ,  H01R13/7195 ,  H01G4/40 ,  H01G4/35 ,  H01G4/06

    Abstract: An EMI/energy dissipating filter for an active implantable medical device (AIMD) is described. The filter comprises a first gold braze hermetically sealing the insulator to a ferrule that is configured to be mounted in an opening in a housing for the AIMD. A lead wire is hermetically sealed in a passageway through the insulator by a second gold braze. A circuit board substrate is disposed adjacent the insulator. A two-terminal chip capacitor disposed adjacent to the circuit board has an active end metallization that is electrically connected to the active electrode plates and a ground end metallization that is electrically connected to the at least one ground electrode plates of the chip capacitor. There is a ground path electrically extending between the ground end metallization of the chip capacitor and the ferrule. The ground path comprises at least a first electrical connection material connected directly to the first gold braze, and at least an internal ground plate disposed within the circuit board substrate with the internal ground plate being electrically connected to both the first electrical connection material and the ground end metallization of the chip capacitor. An active path electrically extends between the active end metallization of the chip capacitor and the lead wire.

Patent Agency Ranking