#$%^&*AU2014250706A120141106.pdf#####CIRCULAR ANASTOMOSIS STAPLING APPARATUS UTILIZING A TWO STROKE FIRING SEQUENCE ABSTRACT A surgical instrument, comprising a replaceable head (12) having a cartridge assembly (25) and anvil assembly (22), the anvil assembly (22) having an anvil member and a rod, the cartridge assembly (25) having annular arrays of slots (37) with staples (23) disposed therein, the cartridge assembly (25) having an inner guide portion (26) for receiving the rod and a manually actuated handle assembly (6).