A surgical instrument (2000) for the placement of staples, comprising: a handle assembly (2010)； a first endoscopic part (2020a) that can be selectively connected to a distal part of the handle assembly (2010) and that defines a longitudinal geometric axis, whose first endoscopic part (2020a) includes a drive member； a second endoscopic part (2020b) that can be selectively connected to the distal part (2012) of the handle assembly (2010), including the second endoscopic part (2020b) a drive element； a first end effector (2030a) that can be selectively connected to a distal part of the first endoscopic part (2020a), whose first end effector (2030a) is configured to perform a first staple placement function； and a second end effector (2030b) that can be selectively connected to a distal part of at least one of the first endoscopic part (2020a) and the second endoscopic part (2020b), whose second end effector (2030b) is configured to perform a second staple positioning function, characterized in that the first endoscopic part (2020a) includes an elongated part and a housing (2046) adjacent to the proximal part thereof, wherein the housing (2046) has a larger diameter that the elongated part and a motor (2044) disposed in the housing (2046) of the first endoscopic part (2020a), the motor (2044) being operatively connected to the drive member to move the drive member substantially along the axis longitudinal geometricUn instrumento quirúrgico (2000) para la colocación de grapas, que comprende: un conjunto de empuñadura (2010)； una primera parte endoscópica (2020a) que se puede conectar selectivamente a una parte distal del conjunto de empuñadura (2010) y que define un eje geométrico longitudinal, cuya primera parte endoscópica (2020a) incluye un miembro de accionamiento； una segunda parte endoscópica (2020b) que se puede conectar selectivamente a la parte distal (2012) del conjunto de empuñadura (2010), incluyendo la segunda parte endoscópica (2020b) un elemento de accio
