An enclosure for use in pacemaker as well as other implantable medical devices has a substantially planar lid which is welded to a circumferential flange formed on a deep drawn shield. The shield and lid form a "container" which is encased in a compliant shroud which isolates the welded flange from direct...http://www.google.co.uk/patents/US5456698?utm_source=gb-gplus-sharePatent US5456698 - Pacemaker
