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, the second set of electrode plates being conductively coupled to a housing for the active implantable medical device;
a terminal pin extending at least partially through the aperture; and
a conductive insert disposed within the aperture for conductively coupling the terminal pin and the first set of electrode plates, and for mechanically coupling the terminal pin to the feedthrough capacitor.
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Abstract
A feedthrough terminal assembly for an active implantable medical device utilizes 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.
105 Citations
43 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, the second set of electrode plates being conductively coupled to a housing for the active implantable medical device; a terminal pin extending at least partially through the aperture; and a conductive insert disposed within the aperture 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 (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. 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 a housing for the active implantable medical device, and the interior surface of the aperture including metallization for conductively coupling the first set of electrode plates; a terminal pin extending at least partially through the aperture; and a conductive insert comprised of resiliently flexible material disposed within 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 (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A feedth rough terminal assembly for an active implantable medical device, comprising:
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a feedthrough capacitor having a first and second apertures therethrough and first and second sets of electrode plates, the second set of electrode plates being conductively coupled to a housing for the active implantable medical device, the interior surface of the first aperture including metallization for conductively coupling the first set of electrode plates, and the interior surface of the second aperture including metallization for conductively coupling the second set of electrode plates; a first terminal pin extending at least partially through the first aperture; a second terminal pin extending at least partially through the second aperture; a first conductive insert disposed within the first aperture so as to physically contact the first terminal pin and the interior surface metallization of the first aperture for conductively coupling the first terminal pin and the first set of electrode plates, and for mechanically coupling the first terminal pin to the feedthrough capacitor; and a second conductive insert disposed within the second aperture so as to physically contact the second terminal pin and the interior surface metallization of the second aperture for conductively coupling the second terminal pin and the second set of electrode plates, and for mechanically coupling the second terminal pin to the feedthrough capacitor. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification