A surgical stapling apparatus, comprising: an actuation device (12) that includes an elongated rod (16)； a tool assembly (10, 110) disposed at a distal end (114) of the rod, the tool assembly including a first jaw member (113) supporting a cartridge assembly (115) having a plurality of fasteners or clips (111) and a slide located to eject the fasteners from the cartridge assembly, and a second jaw member (117) supporting an anvil (119), the first jaw member being movable with respect to the first jaw member between positions separate and approximate； a slide pusher assembly (174) that includes a slide pusher (178) having a distal end configured to be applied to the slide of the cartridge assembly； and a drive beam assembly (134)； characterized in that the drive beam assembly includes a latch assembly (140) having a latch (150) releasably coupled to the slide pusher assembly, in which the distal translation of the drive beam assembly from a retracted position towards an advanced position it makes the movement of the first and second jaw members towards the approximate position and unlatches the latch, of the latch assembly, of the sliding pusher assembly to facilitate the distal movement of the sliding pusher regardless of the beam assembly of actuation and in which the distal movement of the slide pusher independently of the drive beam assembly advances the slide pusher and the slide of the cartridge assembly to eject the plurality of fasteners from the cartridge assembly.Un aparato de grapar quirúrgico, que comprende: un dispositivo de actuación (12) que incluye un vástago alargado (16)； un conjunto de herramienta (10, 110) dispuesto en un extremo distal (114) del vástago, incluyendo el conjunto de herramienta un primer miembro de mordaza (113) que soporta un conjunto de cartucho (115) que tiene una pluralidad de sujetadores o grapas (111) y una corredera situada para expulsar los sujetadores desde el conjunto de cartucho, y un segundo miembro de mordaza (117) que
