Patent ID: 9220902
Filing Date: 2015-12-29
Classification: A61N,B23K,H01M,Y02E,Y10T

Abstract:
1. An implantable medical device comprising electronics, a power source, connector contacts, a first conductive enclosure containing the electronics, a second conductive enclosure containing the power source, an insulative housing containing the connector contacts, the first conductive enclosure including a feedthrough assembly for coupling the electronics to the connector contacts, all or a portion of the second conductive enclosure being located outside the first conductive enclosure and being attached thereto, and the insulative housing including a receptacle formed therein, the connector contacts being mounted in the receptacle for connecting to a medical electrical lead connector; and wherein the second conductive enclosure comprises: an inner layer comprising a first metal sheet that approximately conforms to a profile of the power source, the first sheet including an edge defining an opening into the second enclosure; an outer layer comprising a second metal sheet that conforms to a profile of the first sheet, the second sheet including an edge adjacent to the edge of the first sheet, the edge of the first sheet being recessed from the edge of the second sheet; a header plate having a hermetically sealed feedthrough extending therethrough, the header plate extending over the opening into the second enclosure, and the feedthrough electrically coupling the power source contained in the second conductive enclosure to the electronics contained in the first conductive enclosure; a first weld extending around an entire perimeter of the header plate, the first weld joining the header plate to the edge of the first sheet and providing a seal for the contained power source; and a second weld extending around an entire perimeter of the header plate, the second weld joining the header plate to the second sheet, in proximity to the edge thereof, and providing a redundant seal for the contained power source, wherein the first and second metal sheets of the second enclosure are in direct mechanical and electrical contact with one another.