Hybrid spring contact system for EMI filtered hermetic seals for active implantable medical devices
First Claim
Patent Images
1. A feedthrough terminal assembly for an active implantable medical device, comprising:
- a feedthrough capacitor having an aperture therethrough and first and second sets of electrode plates;
a terminal pin extending at least partially through the aperture;
a conductive insert disposed within the aperture for conductively coupling the terminal pin and the first set of electrode plates; and
means for conductively coupling the second set of electrode plates to a ground plane for the active implantable medical device.
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Accused Products
Abstract
A feedthrough terminal assembly for an active implantable medical device utilizes an insert to establish a reliable electrical connection between capacitor electrode plates, via inner surface metallization of a capacitor aperture, and an associated terminal pin 10, which passes at least partially therethrough. The inserts are preferably resiliently flexible, such as a spring, to establish this connection. The insert also serves to establish a mechanical connection between the capacitor and the terminal pin.
89 Citations
42 Claims
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1. A feedthrough terminal assembly for an active implantable medical device, comprising:
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a feedthrough capacitor having an aperture therethrough and first and second sets of electrode plates; a terminal pin extending at least partially through the aperture; a conductive insert disposed within the aperture for conductively coupling the terminal pin and the first set of electrode plates; and means for conductively coupling the second set of electrode plates to a ground plane for the active implantable medical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A feedthrough terminal assembly for an active implantable medical device, comprising:
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a feedthrough capacitor having an aperture therethrough and first and second sets of electrode plates; a terminal pin extending at least partially through the aperture; a conductive insert comprised of resiliently flexible material disposed with the aperture so as to physically contact the terminal pin and the interior surface metallization for conductively coupling the terminal pin and the first set of electrode plates; a metallization applied to an exterior surface of the capacitor and conductively coupled to the second set of electrode plates; and means for conductively coupling the exterior surface metallization to a ground plane of the active implantable medical device. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A feedthrough terminal assembly for an active implantable medical device, comprising:
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a feedthrough capacitor having an aperture therethrough and first and second sets of electrode plates, the second set of electrode plates being conductively coupled to metallization applied to an exterior surface of the capacitor, and the first set of electrode plates being conductively coupled to metallization applied to an interior surface of the aperture; an insulating washer disposed between the capacitor and the ferrule; means for conductively coupling the outer metallization to a ferrule; a terminal pin extending at least partially through the aperture; and a conductive insert comprised of resiliently flexible material disposed with the aperture so as to physically contact the terminal pin and the interior surface metallization for conductively coupling the terminal pin and the first set of electrode plates, and for mechanically coupling the terminal pin to the feedthrough capacitor. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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Specification