Patent ID: 7962211

Claim:
An antenna for a completely external power source for an implantable medical device situated completely under a continuous cutaneous boundary of a patient, said implantable medical device having therapeutic componentry and a secondary coil operatively coupled to said therapeutic componentry, comprising: a housing having a first surface adapted to be placed closest to said secondary coil of said implantable medical device; and a primary coil operatively coupled to said external power source and inductively energizing said secondary coil transcutaneously across said continuous cutaneous boundary, said primary coil being wound forming generally concentric loops having an axis; said housing having a central protrusion centrally located with respect to said axis of said primary coil extending from said first surface, a peripheral protrusion extending from said first surface at least partially surrounding an outer periphery of said primary coil, and an area between said central protrusion and said peripheral protrusion co-planar with said first surface.