A disposable loading unit for operable attachment to a surgical stapling apparatus. The disposable loading unit may have a carrier that supports a staple cartridge therein, an anvil assembly that is movably coupled to the carrier, and an axial drive assembly that is constructed to move in a distal direction...http://www.google.es/patents/US7810692?utm_source=gb-gplus-sharePatente US7810692 - Disposable loading unit with firing indicator