A surgical instrument comprising an elongate channel assembly that has a distal end and a proximal end and is constructed to operably support a staple cartridge assembly therein. The instrument may further include a knife assembly that is oriented for travel within the elongate channel assembly. At least...http://www.google.de/patents/US7588175?utm_source=gb-gplus-sharePatent US7588175 - Surgical stapling and cutting instrument with improved firing system
