A surgical device (1) comprising: -a handle assembly (30) comprising a casing (10) forming a housing, a stationary handle element (11), and a movable handle element (13) that can be moved by means of an actuating movement -at least one disposable loading unit (40) suitable for being mounted at least partially in a reversibe manner inside said casing (10) forming a housing said device (1) being characterised in that said casing (10) forming a housing supports: -a first actuation shaft (16a) mounted to make a longitudinal movement inside the housing in response to the movement of the movable handle element (13) -a transmission element (17) mounted to actuate a longitudinal movement of a second actuation shaft (16b) mounted inside said casing forming a housing (10) in response to the longitudinal movement of the first actuation shaft (16a) -a main actuation sled (20a) and a secondary actuation sled (20b) mounted to at least partially receive said at least one disposable loading unit (40), said actuation sleds (20a, 20b) being secured respectively to the actuation shafts (16b,16a) in order to activate the actuation mechanism of the disposable loading unit (40) in response to the longitudinal movements thereof.Dispositif chirurgical (1) comprenant: -un ensemble de poignées (30) comprenant un boîtier (10) formant logement,un élément de poignée stationnaire (11), et un élément de poignée mobile (13) pouvant être déplacé au moyen dun mouvement dactionnement -au moins une unité de chargement jetable (40) apte à être montée au moins partiellement de manière réversible à lintérieur dudit boîtier (10) formant logement ledit dispositif (1) étant caractérisé en ce que ledit boitier (10) formant logement supporte: -un premier arbre dactionnement (16a) monté pour un mouvement longitudinal à lintérieur du logement en réaction à un mouvement de lélément de poignée mobile (13) -un élément de transmission (17) monté pour actionner un mouvement longitudinal dun second arbre dactionnemen
