The medical manipulator is supported by the first input member so that the surgical tool portion can move forward and backward in opposition to the first input member at a first end portion in the attaching / detaching direction with the surgical tool drive unit. The input member is moved in the same direction as the advancement direction of the input member, and the first transmission member connected to the operating body at the second end and the surgical instrument drive unit in the attachment / detachment direction In the first end portion, the second input member is supported so as to be capable of moving forward and backward, and receives the driving force from the second input member, and is in the same direction as the advance direction of the second input member. A second transmission member that moves to the first transmission member, and is engaged with the first transmission member and the second transmission member, and the amount of movement of one of the first transmission member and the second transmission member is set to the first transmission member. The other of the first transmission member and the second transmission member And a surgical instrument unit side reversing interlocking member transmitting by reversing the direction of movement of the first transmission member or said second transmission member.医療用マニピュレータは、前記術具部は、前記術具駆動部との着脱方向における第一端部において、前記第１の入力部材に対向して進退移動可能に支持され、前記第１の入力部材による前記駆動力を受けて前記入力部材の前記進出方向と同方向に移動し、第二端部において前記作動体に接続された第１の伝達部材と、 前記術具駆動部との着脱方向における前記第一端部において、前記第２の入力部材に対向して進退移動可能に支持され、前記第２の入力部材による前記駆動力を受けて前記第２の入力部材の前記進出方向と同方向に移動する第２の伝達部材と、前記第１の伝達部材および前記第２の伝達部材に係合され、前記第１の伝達部材および前記第２の伝達部材の一方の移動量を、前記第１の伝達部材および前記第２の伝達部材の他方に、前記第１の伝達部材あるいは前記第２の伝達部材の移動方向を反転させて伝達する術具部側反転連動部材と、を備える。
