Aluminum electrolytic capacitor for implantable medical device
First Claim
1. An aluminum electrolytic capacitor comprising:
- an aluminum housing defining a chamber, and defining a feed-through aperture providing communication with the chamber from outside of the housing;
a plurality of aluminum anode layers positioned within the chamber,a feed-through member formed a first conductive material and received within the feed-through aperture;
the feed-through member having an inner end extending into the chamber, an outer end extending externally from the housing, and an insulative sleeve encompassing an elongated intermediate portion of the feed-through member and directly contacting the housing at the feed-through aperture to prevent electrical contact between the feed-through member and the housing; and
a connection element formed of a second different conductive material attached to the inner end of the feed-through member and spaced apart from the housing and including a head having a diameter larger than the diameter of the aperture.
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Accused Products
Abstract
An aluminum electrolytic capacitor with an aluminum housing defining a chamber, and having a feed-through aperture providing communication with the chamber from outside of the housing. A number of aluminum anode layers are positioned within the chamber, and a feed-through member formed of a first conductive material occupies the feed-through aperture. The feed-through member has an inner end extending into the chamber, an outer end extending externally from the housing, and an insulative sleeve encompassing an intermediate portion of the feed-through member and directly contacting the housing at the feed-through aperture to prevent electrical contact between the feed-through member and the housing. A connection element formed of a second different conductive material is attached to the inner end of feed-through member and spaced apart from the housing. A compressible insulative gasket may be positioned between the housing and the connection element to provide insulation and a fluid seal.
141 Citations
16 Claims
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1. An aluminum electrolytic capacitor comprising:
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an aluminum housing defining a chamber, and defining a feed-through aperture providing communication with the chamber from outside of the housing; a plurality of aluminum anode layers positioned within the chamber, a feed-through member formed a first conductive material and received within the feed-through aperture; the feed-through member having an inner end extending into the chamber, an outer end extending externally from the housing, and an insulative sleeve encompassing an elongated intermediate portion of the feed-through member and directly contacting the housing at the feed-through aperture to prevent electrical contact between the feed-through member and the housing; and a connection element formed of a second different conductive material attached to the inner end of the feed-through member and spaced apart from the housing and including a head having a diameter larger than the diameter of the aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implantable cardiac therapy device comprising:
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a device housing defining a chamber; a plurality of interconnected electronic components positioned within the chamber; a first component including a component housing defining an interior space, and defining a passage through which a conductive post extends from the interior space to outside the component housing, the conductive post formed of a first material; a conductive cap formed of a second, different material attached to the post and positioned with the component housing; an elastomeric washer defining a hole through which the post passes, the washer being positioned within the component housing; and the washer being compressed between the cap and a portion of the component housing to provide a fluid seal encompassing the passage. - View Dependent Claims (14, 15, 16)
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Specification