Distraction device for oral and maxillofacial surgery

The invention belongs to the technical field of medical instruments, and particularly discloses a dilator for oral and maxillofacial surgery, which comprises two support frames, the support frames are symmetrically arranged up and down, two adjusting slide blocks are slidably arranged on the support frames, dentures are rotatably arranged on the adjusting slide blocks, a pressure balancing mechanism is arranged in the support frames, and the pressure balancing mechanism is connected with the pressure balancing mechanism. Transmission self-locking mechanisms are symmetrically and fixedly arranged on the two sides of the supporting frame, and overload protection mechanisms are arranged on one sides of the transmission self-locking mechanisms. The invention provides a solution which is stable and reliable, can be attached to teeth, uniformly distributes supporting force and can control the distraction force at the same time, so that the operation effect and the comfort level of a patient are improved. 本发明属于医疗器械技