Mouth opening device for impacted tooth extraction

The invention relates to a mouth distraction device for impacted tooth extraction, and the device comprises a breathable pad, u-shaped rods, a movable plate, a rubber support plate, a first spring, a driving mechanism and a clamping mechanism; one side of the breathable pad is symmetrically and fixedly connected with the u-shaped rods, the movable plate is symmetrically and slidably sleeved between the two u-shaped rods, and the first spring is symmetrically wound between one side of the movable plate and one side of each u-shaped rod in the circumferential direction. The breathable pad is moved to make contact with the face of a patient, the rubber supporting plate corresponds to the lips, the driving mechanism is pulled to operate, the driving mechanism operates to drive the rubber supporting plate to move outwards and open to support the lips, in this way, the patient does not need to open the mouth all the time, mouth ache is avoided, and it can be avoided that the mouth is slowly closed to affect extract