Passive type nasal endoscopic surgery assisting robot

The invention provides a passive type nasal endoscopic surgery assisting robot. The passive type nasal endoscopic surgery assisting robot comprises a guide rail adapter which can be appropriately matched to different guide rails, a lifting mechanism which is connected to the guider rail adapter and a flexible joint structure, a tail end feeding fine adjusting mechanism and a clamping mechanism which are sequentially connected to the lifting mechanism; the lifting mechanism supports the flexible joint mechanism, the tail end feeding fine adjusting mechanism and the clamping mechanism to simultaneously move in the lifting direction. The passive type nasal endoscopic surgery assisting robot also comprises air circuits which are in in serial connection to the flexible joint mechanism; when the air circuits exhaust air, positions of all joints are kept fixed and the joints are in braking states; when at least a part of air circuits are inflated, the corresponding joints can move and in loosening states. According to the passive type nasal endoscopic surgery assisting robot, an anti-phase braking control mode is adopted, all joints of a robot can well keep an original position and posture when various incidents occur during an operation, and accordingly patients and doctors are protected from being damaged and potential risks through a driving control mode due to the fact that the joints are out of control because of power failure, motor invalidation and the like.