A surgical stapling apparatus, comprising: a housing (102, 202)； an elongated member (104, 204) extending from the housing (102, 202)； a refill (106) supported on a distal end of the elongate member (104, 204), the refill (106) includes a first jaw member (108) that releasably supports a cartridge (112) and a second jaw member ( 110) which supports an anvil, the cartridge (112) includes a sliding baffle (130) movable from a first position to a second position； at least one blocking step (120a, 120b) provided in one of the first and second jaw members (108, 110)； a pulse member (D) that includes a working end (101) configured to move through the recharge (106) when the first and second jaw members (108, 110) are in a closed configuration, the working end it is forced to move towards it at least one blocking step (120a, 120b)； and where, in the first position, the sliding deflector (130) is placed to prevent the coupling of the working end (101) of the impulse member (D) with the at least one blocking step (120a, 120b), and in the second position the sliding deflector (130) is positioned to allow the working end (101) of the impulse member (D) to be coupled with the at least one blocking step (120a, 120b) to prevent further advance of the working end (101), characterized in that the sliding deflector (130) is detachably coupled to a drive slide of the cartridge (112), and a proximal end 131a of the sliding deflector (130) defines an angled surface which is in the first position, placed to deflect the working end (101) of the impulse member (D) away from the at least one blocking step (120a, 120b), where with the operation of the surgical apparatus, the distal translation from the end of tr down (101) causes the sliding baffle (130) to move from the first position to the second position.Un aparato de grapado quirúrgico, que comprende: un alojamiento (102, 202)； un miembro alargado (104, 204) que se extiende desde el alojamiento (102, 202)； una recarga (106) soportada e
