Patent ID: 8666491

Claim:
A system, comprising: an external device for sending a wireless signal to an implantable medical device, comprising: a hand-held housing; a printed circuit board (PCB) within the housing, the PCB having a plurality of layers of traces; a first coil for broadcasting via magnetic coupling the wireless signal to the implantable medical device, wherein the first coil comprises a plurality of turns in the traces in the plurality of layers of the PCB, wherein a via between adjacent layers directly connects the plurality of turns in the adjacent layers; external device circuitry mounted to the PCB and for activating the first coil to transmit the wireless signal, wherein the external device circuitry is within the first coil; and a battery within the housing, wherein the battery is outside of and does not overhang the coil; and an implantable medical device, wherein the implantable medical device comprises a second coil for receipt of the wireless signal broadcast from the first coil.