A medical manipulator system (1) is provided with: a guide device having a treatment instrument channel an insertion body (31) passed through the treatment instrument channel a power source section (56) capable of being mounted to and removed from the insertion body (31) a guide rail (53) having a first region corresponding to a state in which the joint section of the insertion body (31) is located within the treatment instrument channel, the guide rail (53) also having a second region corresponding to a state in which the joint section is exposed from the distal end of the treatment instrument channel, the guide rail (53) guiding the power source section (56) so that the power source section (56) can move forward and backward in a predetermined rectilinear direction comprising the first region and the second region and a restriction section (70) disposed at the boundary between the first region and the second region, the boundary being located in a path for forward and backward movement of the power source section (56) on the guide rail (53), the restriction section (70) restricting the movement of the insertion body (31) so that the insertion body (31) does not move from the second region to the first region while the insertion body (30) is mounted to the power source section (56).Linvention concerne un système de manipulateur médical (1) qui comprend : un dispositif de guidage ayant un canal dinstrument de traitement un corps dinsertion (31) passant à travers le canal dinstrument de traitement une section de source dalimentation (56) pouvant être montée sur le corps dinsertion (31) et retirée de ce dernier un rail de guidage (53) ayant une première région correspondant à un état dans lequel la section darticulation du corps dinsertion (31) est située dans le canal dinstrument de traitement, le rail de guidage (53) ayant également une seconde région correspondant à un état dans lequel la section darticulation est exposée à partir de lextrémité distale du canal
