INSTRUMENT CHIRURGICAL ET PROCÉDÉ DE RETRAIT D'INSTRUMENT CHIRURGICAL FIXÉ SUR UN BRAS DE ROBOT DE SYSTÈME CHIRURGICAL ROBOTISÉ À L'AIDE D'UN ADAPTATEUR
A surgical instrument according to an embodiment may include: a base body including an attachment surface for the adaptor; a surgical tool; driven members rotatably provided on the base body; a housing covering the driven members; and first and second movable members movable with respect to the housing and the base body. The attachment surface of the base body includes a first guide groove and a second guide groove that slidably receive a first guide rail and a second guide rail provided on the adaptor respectively. The first and second guide grooves are defined by the base body and the first and second movable members such that groove widths of the first and second guide grooves are variable by moving the first and second movable members with respect to the base body.