A surgical instrument comprises a first portion encapsulated by a membrane and a second portion comprising a surgical instrument body and a cavity in the surgical instrument body. The cavity is configured to receive the first portion. The second portion comprises a first region comprising an opening...http://www.google.de/patents/US20100198220?utm_source=gb-gplus-sharePatent US20100198220 - SURGICAL INSTRUMENTS AND COMPONENTS FOR USE IN STERILE ENVIRONMENTS