Battery isolator for implantable medical device
An implantable medical device having a case with therapeutic componentry contained with the case. A module has a rail around at least a portion of a perimeter of the module and is adapted to be mechanically secured to the case. The case has a rigid fastening channel adapted to receive the rail of the module. The rigid fastening channel has an opening allowing the rail of the module to drop into the rigid fastening channel through the opening and then slide along the rigid fastening channel to be mechanically secured to the case.
1. An implantable medical device, comprising:
a case having a battery cavity and an electronics cavity;
electronic componentry contained within said electronics cavity;
a battery contained within said battery cavity, said battery being operatively coupled to said electronic componentry;
a spacer situated in said case, said spacer configured to support said battery around at least a portion of a periphery of said battery away from an inside surface of said case, said spacer allowing a central portion of said battery to expand and contract during charge and discharge cycles;
a sealer filling in a portion of said battery cavity, said spacer ensuring said sealer does not fill an area proximate said central portion of said battery; and
foam positioned between said spacer and said battery.
2. A method of assembling an implantable medical device having a case, electronic componentry contained within an electronics cavity of said case, a battery operatively coupled to said electronic componentry, and a sealer filling in a portion of a battery cavity of said case, comprising the steps of:
positioning a spacer in said case, said spacer being configured to support said battery around at least a portion of a periphery of said battery away from an inside surface of said case;
positioning said battery into said battery cavity of said case supported away from said inside surface of said case around at least a portion of said periphery of said battery;
said spacer allowing a central portion of said battery to expand and contract during charge and discharge cycles, and said spacer ensuring said sealer does not fill an area proximate said central portion of said battery; and
positioning foam between said spacer and said battery.