An apparatus for transcutaneously transferring an amount of energy to an implantable orthopaedic device includes a primary coil. The primary coil has a resonant frequency matched to a resonant frequency of a secondary coil, which may form part of the implantable orthopaedic device. The primary coil may...http://www.google.com.au/patents/US20100234923?utm_source=gb-gplus-sharePatent US20100234923 - APPARATUS, SYSTEM, AND METHOD FOR TRANSCUTANEOUSLY TRANSFERRING ENERGY
