An implantable medical device for optically sensing action potential signals in excitable body tissue. The device includes an elongated tubular lead body carrying an optical fiber extending from a proximal lead end to a distal lead end to position the optical fiber at a target site. The lead body additionally...http://www.google.es/patents/US7190993?utm_source=gb-gplus-sharePatente US7190993 - Implantable medical device having optical fiber for sensing electrical activity
Implantable medical device having optical fiber for sensing electrical activity