Anatomical dilator for thoracolumbar posterior surgery

The utility model relates to the technical field of medical instruments, and discloses a thoracolumbar posterior surgery anatomical dilator which comprises a base plate and a guide plate, first mounting grooves are formed in the two ends of the base plate respectively, supporting arms are rotationally mounted on the inner sides of the two first mounting grooves respectively, distraction arms are fixedly connected to the end portions of the two supporting arms respectively, and the guide plate is fixedly connected with the base plate. Second mounting grooves are formed in the two sides of the guide plate correspondingly, opening push rods are rotationally mounted on the inner sides of the two second mounting grooves correspondingly, movable grooves are formed in the opposite sides of the two supporting arms correspondingly, and one ends of the two opening push rods are rotationally connected to the inner sides of the two movable grooves correspondingly. According to the skin distraction device, the two distrac