Miniature compression feedthrough assembly for electrochemical devices
First Claim
1. A miniature insulative feedthrough for receiving an electrical lead therethrough, said feedthrough comprising;
- a ferrule having first and second open ends and an interior surface;
at least a first insulating ring positioned within said ferrule and having an aperture therethrough for receiving said electrical lead;
at least one compression ring positioned within said ferrule for sealingly engaging said interior surface, said at least one compression ring having an aperture therethrough for receiving said electrical lead; and
first and second retaining portions for maintaining said at least one insulating ring and said at least one compression ring in position within said ferrule.
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Accused Products
Abstract
A miniature insulative feedthrough receives an electrical lead therethrough and includes a ferrule having first and second open ends and an interior surface. At least a first insulating ring is positioned within the ferrule and has an aperture therethrough for receiving the electrical lead. At least one compression ring is positioned within the ferrule for sealingly engaging the interior surface, the compression ring also having an aperture therethrough for receiving the electrical lead. First and second retaining portions are provided for maintaining the insulating ring and the compression ring in position within the ferrule.
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Citations
51 Claims
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1. A miniature insulative feedthrough for receiving an electrical lead therethrough, said feedthrough comprising;
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a ferrule having first and second open ends and an interior surface;
at least a first insulating ring positioned within said ferrule and having an aperture therethrough for receiving said electrical lead;
at least one compression ring positioned within said ferrule for sealingly engaging said interior surface, said at least one compression ring having an aperture therethrough for receiving said electrical lead; and
first and second retaining portions for maintaining said at least one insulating ring and said at least one compression ring in position within said ferrule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for feeding a terminal lead through an encasement wall of an electrochemical device of the type utilized in implantable medical devices, of the method comprising:
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positioning a ferrule having first and second ends through said encasement wall, said ferrule having an interior surface and having a crimping region at said first end;
passing said terminal lead through said ferrule;
threading said terminal lead through an assembly comprised of at least first and second insulating rings and at least one intermediate compression ring;
positioning said assembly within said ferrule; and
compressing said crimping portion and said assembly to maintain said assembly within said ferrule and to deform said compression ring to sealingly engage said interior surface. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An electrochemical cell for use in an implantable medical device, said electrochemical cell comprising:
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an encasement;
at least one electrode body disposed within said encasement;
an electrical lead coupled to said electrode body; and
an insulative feedthrough coupled through said encasement for receiving said electrical lead therethrough, said insulative feedthrough comprising;
a ferrule having first and second open ends and an interior surface;
at least first and second insulating rings positioned within said ferrule and each having an aperture therethrough for receiving said electrical lead;
at least one compression ring positioned within said ferrule and compressed between said at least first and second insulating rings so as to sealingly engage said interior surface, said at least one compression ring having an aperture therethrough for receiving said electrical lead; and
first and second retaining portions for maintaining said at least first and second insulating rings in position within said ferrule. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A compression apparatus for producing a seal between a compression ring and an inner surface of a ferrule having a crimping portion at a first end thereof and having a second end, an insulating member being positioned between said first end and said compression ring, and an electrical lead passing through said ferrule, said compression apparatus comprising:
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a first jaw member for compressingly engaging said second end; and
a second jaw member for compressingly engaging said insulating member and said crimping portion to compress said compression ring and deform said crimping portion. - View Dependent Claims (48, 49, 50, 51)
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Specification