BATTERY FEEDTHROUGH FOR AN IMPLANTABLE MEDICAL DEVICE
First Claim
1. A battery feedthrough comprising:
- a ferrule having a first side, a second side, and a passage extending from the first side to the second side;
a pin for conducting electricity between the first side of the ferrule and the second side of the ferrule, the pin extending through the passage;
an insulation sleeve disposed between the pin and the ferrule within the passage, wherein the insulation sleeve electrically isolates the pin from the ferrule, there being a first junction between the pin and the insulation sleeve and a second junction between the insulation sleeve and the ferrule; and
a coating comprising a polymer disposed over the pin on the first side of the ferrule, wherein the coating is formed by forming a preform comprising the polymer, placing the preform around at least a first portion of the pin on the first side of the ferrule, and melting the preform so that the polymer substantially covers a second portion of the pin, the first junction, a portion of the insulation sleeve, the second junction, and a portion of the ferrule on the first side of the ferrule.
1 Assignment
0 Petitions
Accused Products
Abstract
A battery feedthrough comprises a ferrule having a passage extending from a first side to a second side, a pin extending through the passage, an insulation sleeve disposed between the pin and the ferrule within the passage, there being a first junction between the pin and the insulation sleeve and a second junction between the insulation sleeve and the ferrule, and a coating comprising a polymer disposed over the pin on the first side of the ferrule, wherein the coating is formed by forming a preform comprising the polymer, placing the preform around at least a first portion of the pin on the first side of the ferrule, and melting the preform so that the polymer substantially covers a second portion of the pin, the first junction, a portion of the insulation sleeve, the second junction, and a portion of the ferrule on the first side of the ferrule.
56 Citations
42 Claims
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1. A battery feedthrough comprising:
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a ferrule having a first side, a second side, and a passage extending from the first side to the second side; a pin for conducting electricity between the first side of the ferrule and the second side of the ferrule, the pin extending through the passage; an insulation sleeve disposed between the pin and the ferrule within the passage, wherein the insulation sleeve electrically isolates the pin from the ferrule, there being a first junction between the pin and the insulation sleeve and a second junction between the insulation sleeve and the ferrule; and a coating comprising a polymer disposed over the pin on the first side of the ferrule, wherein the coating is formed by forming a preform comprising the polymer, placing the preform around at least a first portion of the pin on the first side of the ferrule, and melting the preform so that the polymer substantially covers a second portion of the pin, the first junction, a portion of the insulation sleeve, the second junction, and a portion of the ferrule on the first side of the ferrule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable medical device comprising:
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a device housing; electronics located within the device housing, the electronics being configured to provide for a medical therapy; a battery located within the device housing, the battery comprising a battery housing enclosing an electrochemical battery cell; and a feedthrough comprising; a ferrule mounted in an opening in the battery housing, the ferrule having an interior side disposed within the battery housing, an exterior side disposed outside the battery housing, and a passage extending between the interior side and the exterior side; a pin for conducting electrical current between the electrochemical battery cell and the electronics, the pin extending through the passage; an insulation sleeve disposed between the pin and the ferrule within the passage, wherein the insulation sleeve electrically isolates the pin from the ferrule, there being a first junction between the pin and the insulation sleeve and a second junction between the insulation sleeve and the ferrule; and a coating comprising a polymer disposed over the pin on the interior side of the ferrule, wherein the coating is formed by forming a preform from the polymer, placing the preform around at least a first portion of the pin on the first side of the ferrule, and melting the preform so that the polymer flows to cover a second portion of the pin, the first junction, a portion of the insulation sleeve, the second junction, and a portion of the ferrule on the interior side of the ferrule. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method comprising:
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forming a preform comprising a polymer; placing the preform around at least a first portion of a pin extending through a passage of a ferrule, wherein an insulation sleeve is disposed in the passage between the pin and the ferrule, there being a first junction between the pin and the insulation sleeve and a second junction between the insulation sleeve and the ferrule; and melting the preform so that the polymer flows to substantially cover a second portion of the pin, the first junction, a portion of the insulation sleeve, the second junction, and a portion of the ferrule. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification