Patent ID: 7927738
Filing Date: 2011-04-19
Classification: H01M,Y02P,Y10T

Abstract:
1. A headspace insulator for a battery in an implantable medical device, comprising: a body of electrically and thermally insulating material disposed between a battery electrode assembly and a battery cover, the body having a top surface and a bottom surface; a receiving area disposed on the bottom surface configured to receive and isolate a battery feedthrough pin; and an engagement mechanism disposed within the receiving area and embedded on the bottom surface configured to receive and engage the battery feedthrough pin, wherein the engagement mechanism comprises indentations that form detents configured to receive a distal end segment of the feedthrough pin and to hold the distal end of the feedthrough pin in place with an interference fit when the distal end of the feedthrough in is received into the receiving area; and wherein the headspace insulator further comprises a raised portion that couples to the battery cover and provides an air gap between the cover and the headspace insulator at locations proximate weld areas of the cover to a case of the battery.