Multifunctional detachable oral retractor for orthodontic treatment

A multifunctional detachable oral retractor for orthodontic treatment, comprising a base body (1), wherein middle parts of top and bottom ends of the base body (1) are hinged with rotating arms (2), end portions of the rotating arms (2) are hinged with a suspension frame (3), the end portions of the rotating arms (2) are hinged with a forceps arm (4) located on an outer side of the suspension frame (3), and a synchronous expansion mechanism (200) is mounted on an end face of the suspension frame (3);

• the synchronous expansion mechanism (200) comprises a shaft tube (201);
• the shaft tube (201) is slidably mounted on an end face of one side of the base body (1), a piston (202) is slidably mounted inside the base body (1), a pilot valve (203) is mounted at a middle part of an end face of the other side of the base body (1), a pressure gauge (210) is mounted on one side of the top end of the base body (1), a conduit (204) is mounted at an end portion of the shaft tube (201), a plug block (205) is slidably mounted at one end of the forceps arm (4), an air cavity (206) is disposed inside the forceps arm (4) corresponding to the plug block (205), a finger pressure head (207) is mounted at a middle part of a side end face of the plug block (205), a plug (208) is slidably mounted on a side end face of the air cavity (206) close to the plug block (205), and a spring (209) is mounted at an end portion of the plug (208);
• a sliding cylinder (211) is mounted at the top end of the base body (1), straight tubes (214) are slidably mounted at two ends of the sliding cylinder (211), plug rings (212) are mounted at end portions of the straight tubes (214) located inside the sliding cylinder (211), guide holes (213) are disposed at middle parts of side end faces of the sliding cylinder (211) and the piston (202), strip boxes (215) are mounted at the other ends of the straight tubes (214), insertion tubes (216) are threadedly mounted on the other sides of bottom ends of the strip boxes (215), and flaring seats (217) are rotatably mounted at end portions of the insertion tubes (216);
• the pilot valve (203) is a one-way valve, the air cavity (206) is communicated with the shaft tube (201) through the conduit (204), and the shaft tube (201) and the sliding cylinder (211) are communicated with an inner cavity of the base body (1) through the guide holes (213);
• top boxes (218) are mounted on two sides of one of the flaring seats (217), bottom boxes (219) are mounted on two sides of the other flaring seat (217), ring plugs (220) are slidably mounted inside the top boxes (218) and the bottom boxes (219), cross tubes (221) are mounted at end portions of the ring plugs (220), a vertical tube (222) is mounted on one side of a bottom end of each top box (218), a cylinder body (223) is mounted on one side of a top end of each bottom box (219), and a sealing ring (224) is mounted at an end portion of the vertical tube (222) located inside the cylinder body (223);
• the top boxes (218) and the bottom boxes (219) are sealed and slidably connected to the cross tubes (221);
• and
• through the communication of the guide holes (213), the shaft tube (201), and the conduit (204), air drawn into the base body (1) is simultaneously delivered into the air cavity (206), forcing the plug block (205) to push the finger pressure head (207) against a physician's finger under air pressure;
• under identical pressure conditions, the plug block (205) drives the finger pressure head (207) to press against the physician's finger, assisting the physician in more intuitively perceiving a support force exerted on a patient's oral cavity;
• and coupled with readings from the pressure gauge (210), the support force applied to the patient's oral cavity is precisely controlled and adjusted steplessly according to actual requirements.