A surgical cutting and fastening instrument is disclosed. According to various embodiments, the instrument includes an end effector comprising a moveable cutting instrument for cutting an object positioned in the end effector, a main drive shaft assembly connected to the end effector, and a handle connected...http://www.google.co.uk/patents/US7766210?utm_source=gb-gplus-sharePatent US7766210 - Motor-driven surgical cutting and fastening instrument with user feedback system
