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    INSULATIVE FEEDTHROUGH FOR AN ACTIVE IMPLANTABLE MEDICAL DEVICE (AIMD)
    3.
    发明公开
    INSULATIVE FEEDTHROUGH FOR AN ACTIVE IMPLANTABLE MEDICAL DEVICE (AIMD) 审中-公开

    公开(公告)号：EP3838337A1

    公开(公告)日：2021-06-23

    申请号：EP21154869.8

    申请日：2017-10-18

    申请人： Greatbatch Ltd.

    发明人： SEITZ, Keith W. ,  MARZANO, Thomas ,  STEVENSON, Robert A. ,  FRYSZ, Christine A. ,  WOODS, Jason ,  BRENDEL, Richard L. ,  MARTINO, Marc Gregory

    IPC分类号： A61N1/375 ,  H01G4/35

    摘要： An insulative feedthrough attachable to an active implantable medical device includes a feedthrough body having a material which is both electrically insulative, biocompatible and separates a body fluid side from a device side. A passageway is disposed through the feedthrough body. A composite conductor is disposed within the passageway and has a body fluid side metallic wire electrically conductive to a device side metallic wire. The body fluid side metallic wire extends from a first end disposed inside the passageway to a second end on the body fluid side. The device side metallic wire extends from a first end disposed inside the passageway to a second end on the device side. The body fluid side metallic wire is hermetically sealed to the feedthrough body. The body fluid side metallic wire is biocompatible and is not the same material as the device side metallic wire.

    CIRCUIT BOARD MOUNTED FILTERED FEEDTHROUGH ASSEMBLY HAVING A COMPOSITE CONDUCTIVE LEAD FOR AN AIMD
    4.
    发明公开
    CIRCUIT BOARD MOUNTED FILTERED FEEDTHROUGH ASSEMBLY HAVING A COMPOSITE CONDUCTIVE LEAD FOR AN AIMD 审中-公开

    公开(公告)号：EP3520857A1

    公开(公告)日：2019-08-07

    申请号：EP19164185.1

    申请日：2017-10-18

    申请人： Greatbatch Ltd.

    发明人： SEITZ, Keith W. ,  MARZANO, Thomas ,  STEVENSON, Robert A. ,  FRYSZ, Christine A. ,  WOODS, Jason ,  BRENDEL, Richard L. ,  MARTINO, Marc Gregory

    IPC分类号： A61N1/375 ,  H01G4/35

    摘要： An insulative feedthrough attachable to an active implantable medical device includes a feedthrough body having a material which is both electrically insulative, biocompatible and separates a body fluid side from a device side. A passageway is disposed through the feedthrough body. A composite conductor is disposed within the passageway and has a body fluid side metallic wire electrically conductive to a device side metallic wire. The body fluid side metallic wire extends from a first end disposed inside the passageway to a second end on the body fluid side. The device side metallic wire extends from a first end disposed inside the passageway to a second end on the device side. The body fluid side metallic wire is hermetically sealed to the feedthrough body. The body fluid side metallic wire is biocompatible and is not the same material as the device side metallic wire.

    AN 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
    5.
    发明公开
    AN 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：EP3900780A1

    公开(公告)日：2021-10-27

    申请号：EP20180915.9

    申请日：2020-06-18

    申请人： Greatbatch Ltd.

    发明人： STEVENSON, Robert A. ,  SEITZ, Keith W. ,  WOODS, Jason ,  FRYSZ, Christine A.

    IPC分类号： A61N1/37 ,  A61N1/375 ,  A61N1/39 ,  A61N1/08

    摘要： 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).

    AN 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 LEAD CONDUCTOR
    7.
    发明公开
    AN 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 LEAD CONDUCTOR 审中-公开

    公开(公告)号：EP3569284A1

    公开(公告)日：2019-11-20

    申请号：EP19175474.6

    申请日：2019-05-20

    申请人： Greatbatch Ltd.

    发明人： STEVENSON, Robert A. ,  SEITZ, Keith W.

    IPC分类号： A61N1/375

    摘要： An RF switchable filter feedthrough housed inside an AIMD is described. The RF switchable filter feedthrough includes an RF switch having a switching pole that is configured to be controlled by an AIMD control signal to switch between first and second throw position. In the first throw position, a conductive leadwire hermetically sealed to and disposed through an insulator is electrically connected to a two-terminal MLCC chip capacitor which in turn is electrically connected to the ferrule. In the first throw position, EMI energy imparted to a body fluid side implanted lead is diverted to the housing of the AIMD by the chip capacitor. In the second throw position, the conductive leadwire is electrically connected to an RF source disposed inside the AIMD housing. In the second throw position, by measuring a reflective return signal from the RF source it can be determined whether the implanted lead has a defective lead conductor.

    HERMETICALLY SEALED FILTERED FEEDTHROUGH ASSEMBLY
    9.
    发明公开
    HERMETICALLY SEALED FILTERED FEEDTHROUGH ASSEMBLY 审中-公开

    公开(公告)号：EP3449973A1

    公开(公告)日：2019-03-06

    申请号：EP18177098.3

    申请日：2018-06-11

    申请人： Greatbatch Ltd.

    发明人： STEVENSON, Robert A. ,  FRYSZ, Christine A. ,  SEITZ, Keith W. ,  MARZANO, Thomas ,  MARTINO, Marc Gregory

    IPC分类号： A61N1/375

    摘要： A hermetically sealed filtered feedthrough assembly attachable to an AIMD includes an insulator hermetically sealing a ferrule opening of an electrically conductive ferrule with a gold braze. A co-fired and electrically conductive sintered paste is disposed within and hermetically seals at least one via hole extending in the insulator. At least one capacitor is disposed on the device side. An active electrical connection electrically connects a capacitor active metallization and the sintered paste. A ground electrical connection electrically connects the gold braze to a capacitor ground metallization, wherein at least a portion of the ground electrical connection physically contacts the gold braze. The dielectric of the capacitor may be less than 1000 k. The ferrule may include an integrally formed peninsula portion extending into the ferrule opening spatially aligned with a ground passageway and metallization of an internally grounded feedthrough capacitor. The sintered paste may be of substantially pure platinum.