A surgical stapling device comprising an elongated portion, a handle portion and a loading unit (20), the loading unit (20) comprising: a cartridge unit (508) and an anvil unit (506), including the cartridge unit a channel (516) and a cartridge (518) having a plurality of surgical clips (530) inside； and an axial drive unit (560) with a grip member (606), the grip member having an upper flange (606b) for coupling the anvil unit, and a lower flange (606c) for channel engagement the mobile axial drive unit (560) being through the staple cartridge (518) to drive the staples (530) out of the staple cartridge and against the anvil unit (506)； the handle portion having a motor unit (5)； and a controller； characterized in that mechanical characteristics (1020) are defined in the channel (516) to indicate a limit switch (1040) for the axial drive unit, the mechanical characteristics having a first pattern (1020a) and a second pattern (1020b), each pattern being different so that the lower flange (606c) is coupled to the first pattern (1020a) and then to the second pattern (1020b) by changing the change in the pattern of the mechanical characteristics the force or torque in the motor unit, said change being detectable by the controller to indicate that the grip member (606) is reaching the limit switch (1040).Un dispositivo de grapado quirúrgico que comprende una porción alargada, una porción de mango y una unidad (20) de carga, comprendiendo la unidad (20) de carga: una unidad (508) de cartucho y una unidad (506) de yunque, incluyendo la unidad de cartucho un canal (516) y un cartucho (518) que tiene una pluralidad de grapas (530) quirúrgicas en su interior； y una unidad (560) de accionamiento axial con un miembro (606) de agarre, teniendo el miembro de agarre un reborde (606b) superior para el acoplamiento de la unidad de yunque, y un reborde (606c) inferior para el acoplamiento del canal, siendo la unidad (560) de accionamiento axial móvil a través del cartucho (518) de g
