An implantable medical device, such as an implantable pulse generator (IPG) used with a spinal cord stimulation (SCS) system, includes a rechargeable lithium-ion battery having an anode electrode with a substrate made substantially from titanium. Such battery construction allows the rechargeable battery...http://www.google.de/patents/US6553263?utm_source=gb-gplus-sharePatent US6553263 - Implantable pulse generators using rechargeable zero-volt technology lithium-ion batteries
