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CN-121265303-B - Mouth gag for orthodontic treatment

CN121265303BCN 121265303 BCN121265303 BCN 121265303BCN-121265303-B

Abstract

The invention belongs to the technical field of medical instruments, and discloses an orthodontic mouth gag, which comprises a mouth gag body and a saliva suction tube, wherein the mouth gag body is provided with an upper lip supporting part, the upper lip supporting part is provided with a groove, the inner side of the groove is provided with a flexible regulating bag, the upper lip supporting part is connected with a regulating assembly, the regulating assembly comprises an outer cylinder and a piston assembly, the outer cylinder is communicated with the flexible regulating bag through a conduit, the conduits arranged at two ends of the outer cylinder are all provided with one-way valves, the mouth gag body is connected with a cheek supporting part through a regulating part, the cheek supporting part is connected with a clamping part, and the mouth gag body is also connected with a lantern ring matched with the saliva suction tube. The invention utilizes the adjusting component to adjust the filling state of the flexible adjusting bag at the inner side of the upper lip supporting part so as to adjust different stretching degrees and improve the comfort when stretching the upper lip, and adjusts the stretching position by adjusting the connecting position and the angle of the cheek stretching piece and the mouth gag body so as to expose the visual field of the corresponding position.

Inventors

  • MA NING
  • DU QING
  • BAI YANJIE
  • ZHANG LINGYUN
  • JIANG YIRAN

Assignees

  • 北京大学第三医院（北京大学第三临床医学院）

Dates

Publication Date
20260508
Application Date
20251201

Claims (6)

  1. 1. An mouth gag for orthodontics comprises an mouth gag body made of elastic materials and in an omega shape, wherein the mouth gag body is connected with a handle for controlling deformation of the mouth gag body; the novel mouth gag is characterized in that an upper lip supporting part is arranged on the upper side of the mouth gag body, a groove is formed in the upper lip supporting part, a flexible adjusting bag is arranged on the inner side of the groove, the upper lip supporting part is connected with an adjusting component for controlling the filling state of the flexible adjusting bag, and the flexible adjusting bag is connected with a control valve for controlling the flexible adjusting bag to be communicated and/or isolated with the outside; The adjusting assembly comprises an outer cylinder and a piston assembly, wherein the outer cylinder is fixedly connected with the upper lip supporting part, a piston of the piston assembly is in sliding sealing connection with the inner side wall of the outer cylinder, an operating rod of the piston assembly is connected with the mouth gag body, the outer cylinder is communicated with the flexible adjusting bag through a guide pipe, when the mouth gag body deforms, the operating rod of the piston assembly drives the piston to move at the inner side of the outer cylinder to control fluid to flow between the inner side of a cylinder body of the outer cylinder and the inner side of the flexible adjusting bag so as to control the filling state of the flexible adjusting bag, the middle part of the guide pipe is communicated with the conducting end of the outer cylinder, the guide pipes arranged at the two ends of the outer cylinder are respectively provided with a one-way valve, the one-way valves between the outer cylinder and the flexible adjusting bag control fluid to flow from the outer cylinder to the side of the flexible adjusting bag, and the other one-way valve controls fluid to flow from the outside to the side of the outer cylinder; The cheek support piece is connected with the mouth gag body through an adjusting piece, the adjusting piece is connected with the mouth gag body through threads, the cheek support piece is detachably connected with the adjusting piece, adjusting holes are formed in the side wall of the mouth gag body, a plurality of clamping holes are uniformly formed in the adjusting piece, the cheek support piece is connected with a clamping piece matched with the clamping holes, and the clamping piece is in interference clamping connection with the clamping holes after passing through the adjusting holes.
  2. 2. The mouth gag for orthodontic treatment according to claim 1, wherein the flexible regulating bag is an air bag or a liquid bag, the check valve is a gas check valve when the flexible regulating bag is an air bag, and the check valve is a liquid check valve when the flexible regulating bag is a liquid bag.
  3. 3. The orthodontic mouth gag according to claim 1, further comprising a saliva suction tube, wherein the mouth gag body is detachably connected with a collar which is arranged in cooperation with the saliva suction tube, the saliva suction tube penetrates through the collar and is used for sucking effusion, and a suction end of the saliva suction tube is connected with a suction ball.
  4. 4. The orthodontic mouth gag according to claim 3, wherein one side of the collar is open, interference fit is achieved between the collar and the mouth gag body and between the saliva suction tube and the collar, and the interference is 0.5-1 mm.
  5. 5. The orthodontic mouth gag of claim 1, wherein the mouth gag body is made of low density polyethylene, medical grade silicone or thermoplastic polyurethane material.
  6. 6. The orthodontic mouth gag of claim 1, wherein the mouth gag body has a shore a hardness of between 30 and 50.

Description

Mouth gag for orthodontic treatment Technical Field The invention relates to the technical field of medical appliances, in particular to an mouth gag for orthodontics. Background In clinical orthodontics, fine operations such as bracket bonding, archwire adjustment, chain ring traction and the like are highly dependent on stable, wide surgical field and dry operating environment. As a core instrument for achieving the object, a mouth gag (also called a mouth opener) has the basic task of maintaining the mouth of a patient in a constant open state, and effectively pulling and isolating soft tissues such as lips, cheeks and the like, so as to construct a clear and unobstructed operation channel for doctors. The existing mouth gag mostly adopts a single size or a fixed structure, and maintains an opening state only by relying on elastic or rigid tension of materials. However, there are significant differences in arch width, soft tissue fullness for different patients, and the practitioner may need to dynamically adjust the opening of the struts throughout the treatment process according to the different operating sites. However, the existing mouth gag cannot respond to the requirements of individuation and dynamic, so that the problems of concentrated compression points and overlarge local stress are generated in application, discomfort and even pain of patients are easily caused, and the tolerance and experience of long-time treatment are seriously affected. In addition, prior mouth openers provide a fixed angle lip with very limited traction on the posterior tooth area, particularly the molar area, exposing a "ubiquitous" structural short plate in terms of surgical field exposure. In order to obtain a sufficient view of the posterior teeth area, a doctor needs to manually assist with the help of a cheek retractor or an assistant, so that not only is continuity of orthodontic operation influenced, but also uncertain factors are brought, and treatment precision and efficiency are influenced. Disclosure of Invention The invention aims to provide an orthodontic mouth gag, which is characterized in that an adjusting component is used for adjusting the filling state of a flexible adjusting bag at the inner side of an upper lip supporting part so as to adjust different stretching degrees and improve the comfort when stretching an upper lip, and the connecting position and the angle of a cheek stretching piece and a mouth gag body are adjusted so as to realize the adjustment of the stretching position and expose the vision field at the corresponding position. Solves the problems in the background technology. In order to achieve the above object, the present invention provides the following technical solutions: The mouth gag for orthodontic treatment comprises a mouth gag body which is made of elastic materials and is omega-shaped, wherein the mouth gag body is connected with a handle for controlling deformation of the mouth gag body, an upper lip supporting part is arranged on the upper side of the mouth gag body, a groove is formed in the upper lip supporting part, a flexible adjusting bag is arranged on the inner side of the groove, the upper lip supporting part is connected with an adjusting assembly for controlling the filling state of the flexible adjusting bag, the flexible adjusting bag is connected with a control valve for controlling the flexible adjusting bag to be communicated and/or isolated with the outside, and cheek supporting pieces are connected on the left side and the right side of the mouth gag body in an adjustable mode. Further, the adjusting assembly comprises an outer cylinder and a piston assembly, the outer cylinder is fixedly connected with the upper lip supporting part, a piston of the piston assembly is in sliding sealing connection with the inner side wall of the outer cylinder, an operating rod of the piston assembly is connected with the opening device body, the outer cylinder is communicated with the flexible adjusting bag through a guide pipe, when the opening device body deforms, the operating rod of the piston assembly drives the piston to move on the inner side of the outer cylinder, and fluid is controlled to flow between the inner side of a cylinder body of the outer cylinder and the inner side of the flexible adjusting bag so as to control the filling state of the flexible adjusting bag. Further, the middle part of the guide pipe is communicated with the conducting end of the outer cylinder, the guide pipes arranged at the two ends of the outer cylinder are all provided with one-way valves, the one-way valves between the outer cylinder and the flexible regulating bag control fluid to flow from the outer cylinder to one side of the flexible regulating bag, and the other one-way valve controls fluid to flow from the outside to one side of the outer cylinder. Further, the flexible regulating bag is an air bag or a liquid bag, the one-way valve is a gas one-way valve when the air