A method and apparatus for automatically identifying surgical implants by use of a radio-frequency tag (RFID) is disclosed. The method, apparatus, and system enable a radio-frequency tagged implant to receive an interrogation signal from a reader and to respond to the interrogation signal with identifying...http://www.google.se/patents/US7474223?utm_source=gb-gplus-sharePatent US7474223 - Method and apparatus for implant identification
