Adhesively-bonded capacitive filter feedthrough for implantable medical device
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United States of America Patent
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Feb 2, 1999
Issued Date -
N/A
app pub date -
Dec 18, 1997
filing date -
May 6, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A capacitive filter feedthrough assembly and method of making the same are disclosed for shielding an implantable medical device such as pacemaker or defibrillator from electromagnetic interference or noise. A ferrule is adapted for mounting onto a conductive device housing by welding, soldering, brazing or gluing, and supports a terminal pin for feedthrough passage to a housing interior. A capacitive filter is mounted at the inboard side of a device housing, with capacitive filter electrode plate sets coupled respectively to the housing and the terminal pin by electrically conductive adhesive or brazing, or a combination of adhesive and brazing. In one embodiment of the invention, multiple capacitive filters are provided in an array within a common base structure, where each capacitive filter is associated with a respective terminal pin.
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