Gas vent for implantable battery pack

A - Human Necessities – 61 – N

Patent

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326/15

A61N 1/36 (2006.01) A61N 1/375 (2006.01)

Patent

CA 1041174

A B S T R A C T An implantable electrically actuated medical device having one or more electrochemical cells and operative electric circuitry mounted in a metallic container, all of which are positioned in a spacer member made of a material which is highly permeable with respect to hydrogen gas, relatively impervious to liquids, and bonds well with epoxy resin. The device is encapsu- lated with an epoxy resin which is relatively impermeable to hydrogen gas and is impermeable to body fluids. The device incorporates an additional path or means which is highly permeable to hydrogen gas and impervious to fluids which may be formed integral with the spacer and be in the form of pins positioned around the same to position the spacer with the components therein during en- capsulation and which extend through the encapsulation. The path may also be in the form of a ridge around a recess in the spacer mounting the electronic components to strengthen the same and provide the path for hydrogen gas.

229589

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