The surgical apparatus includes a clamp body that is movable between a proximity position that is close to the vibration transmission member and a remote position that is separated from the vibration transmission member, and the vibration transmission that is interlocked with the proximity of the clamp body to the proximity position. A pressing member that presses the member to reduce a contact pressure between the pressing pad and the vibration transmission member and releases the pressure on the vibration transmission member in conjunction with the clamp body approaching the separation position. Have.外科装置は、振動伝達部材に対して近接する近接位置と、離隔する離隔位置との間を移動可能なクランプ部本体と、前記クランプ部本体が前記近接位置に近づくことに連動して前記振動伝達部材を押圧して押圧パッドと前記振動伝達部材との間の接触圧力を低下させ、前記クランプ部本体が前記離隔位置に近づくことに連動して前記振動伝達部材に対する押圧を解除する押圧部材とを有する。
