Mouth gag for temporomandibular joint examination

Abstract

The utility model discloses a mouth gag for temporomandibular joint examination, which belongs to the technical field of medical instruments and comprises an upper tooth occlusion mechanism, a lower tooth occlusion mechanism, a sliding part, a pressing plate mechanism, a connecting screw and a locking nut. The upper tooth occlusion mechanism comprises an upper tooth occlusion piece, an upper tooth occlusion groove is formed in the upper portion of the upper tooth occlusion piece, and a sliding supporting piece is arranged at one end of the upper tooth occlusion piece. A first sliding groove is formed in the side portion of the sliding supporting piece, a second sliding groove is formed in the front portion of the sliding supporting piece, and the first sliding groove and the second sliding groove both penetrate through the sliding supporting piece. A pressing plate mechanism is arranged at one end of the sliding supporting piece. The lower tooth occlusion mechanism comprises a lower tooth occlusion piece, a lower tooth occlusion groove is formed in the lower part of the lower tooth occlusion piece, and a mounting block is arranged at one end of the lower tooth occlusion piece; and the mounting block is inserted into the mounting groove of the sliding piece. The opening angle of the mandibular joint can be adjusted according to needs, and the applicability is high; and a better supporting effect can be achieved, and the discomfort of the patient under the long-term use condition is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to an oral opener for temporomandibular joint examination. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] Oral medicine requires specific medical equipment to carry out work well. During the oral treatment process by medical staff, there are many problems that are not conducive to internal oral operations. For example, during the treatment of oral diseases, the temporomandibular joint of the patient will be very tired after opening the mouth for a long time; during the treatment by medical staff, the patient may suddenly close the mouth due to fatigue or discomfort and bite the medical worker. The patient has difficulty opening the mouth, and the amplitude of repeated mouth opening is not fixed, and the maximum mouth opening angle cannot be accurately understood. At this time, an oral opener is needed to open and support the patient's mouth.

[0004] At present, oral openers are widely used in oral treatment. After retrieval, an oral opener for temporomandibular joint examination is disclosed in the patent publication number CN117503033A, which includes a rectangular shell. The inside of the rectangular shell is a cavity structure. A rectangular through hole is opened on the side wall surface of the rectangular shell. A shutter matching the rectangular through hole is connected to the rectangular shell by a hinge. An extension and expansion structure is provided on the rectangular shell, and a lip expansion structure is provided on the extension and expansion structure.

[0005] Although the oral cavity of the patient can be opened and supported in this patent, it opens the oral cavity in the vertical direction. However, the opening direction of the human mandibular joint has a certain arc. Therefore, using the oral opener of this patent will cause discomfort to the patient and damage the joint after long-term opening; due to the certain arc of the opening of the human mandibular joint, a certain angle will be presented. The opening angle of the patient's mandible cannot be accurately judged in this patent. For the judgment of some diseases, such as temporomandibular joint disorder syndrome, it needs to be judged according to the opening angle of the patient's mandibular joint. And when performing different oral treatments or for patients of different ages, an appropriate opening angle is required to facilitate better treatment. Summary of the Utility Model

[0006] Aiming at the above problems, the utility model provides an oral opener for temporomandibular joint examination, which can adjust the opening angle of the mandibular joint according to needs, has strong applicability; can also play a better supporting role and reduce the discomfort of the patient under long-term use.

[0007] To achieve the above object, the utility model adopts the following technical solutions:

[0008] An opener for temporomandibular joint examination, comprising an upper tooth occlusion mechanism, a lower tooth occlusion mechanism, a sliding member, a pressing plate mechanism, a connecting screw and a locking nut;

[0009] The upper tooth occlusion mechanism includes an upper tooth occlusion member, an upper tooth occlusion groove is arranged on the upper part of the upper tooth occlusion member, and a sliding support member is arranged at one end of the upper tooth occlusion member; a first sliding groove is arranged on the side part of the sliding support member, and a second sliding groove is arranged on the front part, and both the first sliding groove and the second sliding groove penetrate through the sliding support member; a pressing plate mechanism is arranged at one end of the sliding support member;

[0010] The lower tooth occlusion mechanism includes a lower tooth occlusion member, a lower tooth occlusion groove is arranged on the lower part of the lower tooth occlusion member, and a mounting block is arranged at one end of the lower tooth occlusion member; the mounting block is inserted into the mounting groove of the sliding member, the sliding member is located in the first sliding groove, the pressing plate mechanism and the sliding member are connected by a connecting screw, and the end of the connecting screw is screwed into the locking nut.

[0011] Furthermore, the inner side surface of the upper tooth occlusion groove is an arc surface, and the bottom surface is a plane; a square groove is arranged on the lower part of the upper tooth occlusion member, and the position of the square groove is vertically aligned with the position of the upper tooth occlusion groove.

[0012] Furthermore, the front part of the lower tooth occlusion member is located in the square groove, and the position of the lower tooth occlusion groove is vertically aligned with the position of the upper tooth occlusion groove.

[0013] Furthermore, the width of the lower tooth occlusion groove is smaller than that of the upper tooth occlusion groove; the inner side surface of the lower tooth occlusion groove is an inclined surface, and the bottom surface is a plane.

[0014] Furthermore, the lower tooth occlusion member and the mounting block are of an integral structure, a first threaded hole is arranged at one end of the mounting block, and the first threaded hole penetrates through the mounting block to the middle part of the lower tooth occlusion member.

[0015] Furthermore, the pressing plate mechanism includes an engaging block, a square block, a second engaging rack and a second threaded hole, the second threaded hole penetrates through the engaging block, and the connecting screw is sequentially screwed into the second threaded hole and the first threaded hole to connect the pressing plate mechanism and the sliding member.

[0016] Furthermore, square blocks are arranged at the upper and lower ends on one side of the engaging block, and the square blocks are located in the second sliding groove; a second engaging rack is arranged on the side part of the engaging block, and the second engaging rack is located on the side part of the square block.

[0017] Furthermore, a first engaging rack is arranged on the side part of the upper tooth occlusion member, the first engaging rack is located at both ends of the second groove, and the first engaging rack meshes with the second engaging rack.

[0018] Further, an installation groove is provided on the sliding member, the installation groove penetrates the sliding member, the lower tooth biting mechanism is inserted into the sliding member, and the installation block of the lower tooth biting mechanism is located in the installation groove.

[0019] Further, the surface of the sliding support member is an arc surface, the inner surfaces of the first sliding groove and the second sliding groove are both arc-shaped, and the first sliding groove and the second sliding groove communicate with each other; one end of the first sliding groove is provided with an opening angle scale, and the other end is provided with an opening distance scale, and both the opening angle scale and the opening distance scale are provided on the surface of the sliding support member

[0020] Compared with the prior art, the advantages and positive effects of the present utility model are:

[0021] The present utility model is provided with an upper tooth biting mechanism, a lower tooth biting mechanism, a sliding member, a pressing plate mechanism, a connecting screw and a locking nut. The lower biting mechanism is installed in the upper biting mechanism. Through the sliding member, the pressing plate mechanism and the connecting bolt, the lower biting groove of the lower biting mechanism is aligned with the upper biting groove of the upper biting mechanism, so that the lower biting mechanism slides along the sliding groove of the upper biting mechanism, thereby opening the patient's oral cavity. The upper biting mechanism is integrally arc-shaped, which makes the lower biting mechanism present a certain angle during the sliding process, and then can be precisely adjusted according to the opening angle scale and the opening distance scale, that is, the opening angle of the mandibular joint can be adjusted according to needs, and the applicability is strong; when the mandible is opened, it is opened at a certain angle, which is more in line with the trajectory of the mandible opening. After the opening angle adjustment is completed, the position of the pressing plate mechanism is locked by the connecting screw and the locking nut, so as to achieve support, which can play a better supporting role and reduce the discomfort of the patient during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specification drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0023] Figure 1 is a structural diagram of the mouth opener of the present utility model;

[0024] Figure 2 is a cross-sectional view of a partial structure of the mouth opener of the present utility model;

[0025] Figure 3 is a structural diagram of the upper tooth biting mechanism of the present utility model;

[0026] Figure 4 is a structural diagram of the sliding member of the present utility model;

[0027] Figure 5 is a structural diagram of the lower tooth biting mechanism of the present utility model;

[0028] Figure 6It is the structural diagram of the pressing plate mechanism of the present utility model;

[0029] Figure 7 It is the usage state diagram of the mouth opener of the present utility model;

[0030] Figure 8 It is the structural diagram of the connecting screw of the present utility model;

[0031] Figure 9 It is the structural diagram of the locking nut of the present utility model;

[0032] In the figure: 1. Upper tooth occlusion mechanism; 11. Upper tooth occlusion part; 12. Upper tooth occlusion groove; 13. Square groove; 14. Sliding support part; 15. First meshing rack; 16. First chute; 17. Second chute;

[0033] 2. Lower tooth occlusion mechanism; 21. Lower tooth occlusion part; 22. Lower tooth occlusion groove; 23. Installation block; 24. First threaded hole;

[0034] 3. Sliding part; 31. Installation groove; 4. Pressing plate mechanism; 41. Meshing block; 42. Square block; 43. Second meshing rack; 44. Second threaded hole; 5. Connecting screw; 6. Locking nut;

[0035] 7. Initial position of the mouth opener; 8. Opened position of the mouth opener; 9. Initial position of the oral cavity; 10. Opened position of the oral cavity. Detailed implementation manners

[0036] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0037] Next, in combination with the attached drawings, the present utility model will be described in detail. An oral opener for temporomandibular joint examination disclosed in this embodiment is as Figure 1As shown in the figure, it includes an upper tooth occlusion mechanism 1, a lower tooth occlusion mechanism 2, a sliding member 3, a pressing plate mechanism 4, a connecting screw 5 and a locking nut 6; the lower occlusion mechanism is installed inside the upper occlusion mechanism. The lower occlusion groove of the lower occlusion mechanism is aligned with the upper occlusion groove of the upper occlusion mechanism through the sliding member 3, the pressing plate mechanism 4 and the connecting bolt, and then the lower occlusion mechanism slides along the sliding groove of the upper occlusion mechanism, thereby opening the patient's oral cavity. The overall shape of the upper occlusion mechanism is arc-shaped, which makes the lower occlusion mechanism present a certain angle during the sliding process. Then, precise adjustment can be carried out according to the opening angle scale and the opening distance scale, and the opening angle of the mandibular joint can be adjusted as needed, with strong applicability; when opening the mandible, it is opened at a certain angle, which is more in line with the trajectory of the mandible opening. After the opening angle adjustment is completed, the position of the pressing plate mechanism 4 is locked by the connecting screw 5 and the locking nut 6, so as to achieve support, which can play a better supporting role and reduce the discomfort of the patient in the case of long-term use at the same time.

[0038] The total volume of all components is 105 cubic centimeters. It is made of polypropylene (pp) as the raw material, with a density of 0.9 grams per cubic centimeter, and is made by the principle of 3D printing, with a total weight of about 100g. Polypropylene is odorless, non-toxic, colorless, and has properties such as easy processing, impact resistance, and flexural resistance. It is commonly used in syringe barrels, infusion bags, etc. in daily life.

[0039] As Figure 3 shown in the figure, the upper tooth occlusion mechanism 1 includes an upper tooth occlusion part 11. An upper tooth occlusion groove 12 is arranged on the upper part of the upper tooth occlusion part 11, and a sliding support part 14 is arranged at one end of the upper tooth occlusion part 11; a first sliding groove 16 is arranged on the side part of the sliding support part 14, and a second sliding groove 17 is arranged on the front part. Both the first sliding groove 16 and the second sliding groove 17 penetrate through the sliding support part 14; a pressing plate mechanism 4 is arranged at one end of the sliding support part 14; the surface of the sliding support part 14 is an arc surface, and the inner surfaces of both the first sliding groove 16 and the second sliding groove 17 are arc-shaped, and the first sliding groove 16 and the second sliding groove 17 communicate with each other; one end of the first sliding groove 16 is provided with an opening angle scale, and the other end is provided with an opening distance scale. Both the opening angle scale and the opening distance scale are arranged on the surface of the sliding support part 14.

[0040] As Figure 5 shown in the figure, the lower tooth occlusion mechanism 2 includes a lower tooth occlusion part 21. A lower tooth occlusion groove 22 is arranged on the lower part of the lower tooth occlusion part 21, and a mounting block 23 is arranged at one end of the lower tooth occlusion part 21; the mounting block 23 is inserted into the mounting groove 31 of the sliding member 3, and the sliding member 3 is located in the first sliding groove 16. As Figure 4 shown in the figure, a mounting groove 31 is arranged on the sliding member 3. The mounting groove 31 penetrates through the sliding member 3. The lower tooth occlusion mechanism 2 is inserted into the sliding member 3, and the mounting block 23 of the lower tooth occlusion mechanism 2 is located in the mounting groove 31. The pressing plate mechanism 4 and the sliding member 3 are connected by a connecting screw 5, and the end of the connecting screw 5 is screwed into the locking nut 6.

[0041] The sliding member 3 slides in the first sliding groove 16, and the sliding path of the sliding member 3 is arc-shaped, thereby presenting a certain angle, which enables the patient's mandible to be opened along a certain angle. Since the opening of the human mandibular joint has a certain arc, the opening method presenting a certain angle is more in line with the opening method of the human mandibular joint, which can improve the patient's comfort when the mandibular joint is opened. According to the patient's age or symptoms, the position of the lower bite mechanism is accurately adjusted in combination with the opening angle scale and the opening distance scale. For example, when detecting whether the patient suffers from temporomandibular joint disorder syndrome, according to the judgment standard of the mandibular opening angle of mandibular joint disorder syndrome, if it is greater than the angle, the patient is excluded from suffering from mandibular joint disorder syndrome, and if it is less than the angle, the patient suffers from mandibular joint disorder syndrome, the angle is 5.5 to 35 degrees, and the length is 9.2 to 55.7 mm; if the mandibular opening angle is different according to the patient's age or gender, the patient's mouth can be opened at an appropriate angle through the oral opener of the utility model, and the opening angle can be accurately adjusted, so as to facilitate better treatment.

[0042] The inner side surface of the upper occlusal groove 12 is an arc surface, and the bottom surface is a plane; a square groove 13 is set at the lower part of the upper occlusal piece 11, and the position of the square groove 13 is aligned with the position of the upper occlusal groove 12. The front part of the lower occlusal piece 21 is in the square groove 13, and the lower occlusal groove 22 is aligned with the upper occlusal groove 12. The width of the lower occlusal groove 22 is smaller than that of the upper occlusal groove 12; the inner side surface of the lower occlusal groove 22 is an inclined surface, and the bottom surface is a plane. The lower occlusal piece 21 and the mounting block 23 are an integrated structure, and a first threaded hole 24 is set at one end of the mounting block 23, and the first threaded hole 24 passes through the mounting block 23 to the middle of the lower occlusal piece 21.

[0043] The surfaces of the upper occlusal groove 12 and the lower occlusal groove 22 are set as arc surfaces, inclined surfaces or planes, which can facilitate the patient's tooth occlusion. The upper teeth are occluded in the upper occlusal groove 12, and the lower teeth are occluded in the lower occlusal groove 22. The lower occlusal mechanism 2 moves to open the patient's upper and lower teeth, thereby driving the mandibular joint to open, thereby achieving the opening of the oral cavity.

[0044] like Figure 6As shown in the figure, the pressing plate mechanism 4 includes an engaging block 41, a square block 42, a second engaging rack 43 and a second threaded hole 44. The second threaded hole 44 penetrates through the engaging block 41. The connecting screw 5 is sequentially screwed into the second threaded hole 44 and the first threaded hole 24 to connect the pressing plate mechanism 4 and the sliding member 3. Square blocks 42 are arranged at the upper and lower ends on one side of the engaging block 41, and the square blocks 42 are located in the second sliding groove 17. A second engaging rack 43 is arranged on the side of the engaging block 41, and the second engaging rack 43 is located on the side of the square block 42. The square block 42 slides in the second sliding groove 17 to limit the pressing plate mechanism 4. A first engaging rack 15 is arranged on the side of the upper tooth engaging member 11, and the first engaging rack 15 is located at both ends of the second groove. The first engaging rack 15 meshes with the second engaging rack 43.

[0045] Usage method: When in use, the upper teeth of the patient bite into the upper tooth biting groove 12 of the upper tooth biting mechanism 1. As Figure 7 shown in the figure, the lower teeth bite into the lower tooth biting groove 22 of the lower tooth biting mechanism 2. At this time, the mandible of the patient is in the initial oral position 9. The pressing plate mechanism 4, the sliding member 3, the connecting screw 5, the locking nut 6 and the lower tooth biting mechanism 2 are in the initial position 7 of the mouth opener. After the patient finishes biting, unscrew the locking nut 6. The second engaging rack 43 of the pressing plate mechanism 4 meshes with the first engaging rack 15 of the upper tooth biting mechanism 1 and moves along the first engaging rack 15; thereby driving the connecting screw 5, the sliding member 3 and the lower biting mechanism to move. At this time, the connecting screw 5 moves in the second sliding groove 17, the sliding member 3 slides in the first sliding groove 16, and the sliding member 3 drives the lower biting mechanism to slide in the first sliding groove 16, thereby gradually moving the lower biting mechanism away from the upper biting mechanism, and further rotating the mandibular joint of the patient; stop moving when the lower biting mechanism reaches the open position 8 of the mouth opener, and screw the locking nut 6 into the connecting screw 5 to press the pressing plate mechanism 4 tightly. At this time, the mandible of the patient is in the open oral position 10, that is, the oral cavity is opened, and the opening degree of the oral cavity can be precisely adjusted according to actual needs. When using this tool, it can be used under magnetic resonance, maintaining a fixed opening angle. The ergonomic design prevents the patient from moving during magnetic resonance scanning, improving the scanning quality.

[0046] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that based on the technical solution of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. An opener for examining the temporomandibular joint, characterized in that: It includes an upper tooth occlusal mechanism, a lower tooth occlusal mechanism, a sliding member, a pressing plate mechanism, a connecting screw and a locking nut; The upper teeth bite mechanism comprises an upper teeth bite piece, an upper teeth bite groove is arranged on the upper part of the upper teeth bite piece, and a sliding support piece is arranged at one end of the upper teeth bite piece; a first slide groove is arranged at the side of the sliding support piece, and a second slide groove is arranged at the front part, and the first slide groove and the second slide groove both penetrate the sliding support piece; a pressure plate mechanism is arranged at one end of the sliding support piece; The lower tooth occlusal mechanism includes a lower tooth occlusal piece, a lower tooth occlusal groove is arranged at the lower part of the lower tooth occlusal piece, and a mounting block is arranged at one end of the lower tooth occlusal piece; the mounting block is inserted into the mounting groove of the sliding piece, the sliding piece is in the first sliding groove, the pressure plate mechanism and the sliding piece are connected by a connecting screw, and the end of the connecting screw is screwed into a locking nut.

2. The mouth opener for examining the temporomandibular joint according to claim 1, characterized in that: The inner side surface of the upper tooth occlusal groove is an arc surface, and the bottom surface is a plane; a square groove is arranged at the lower part of the upper tooth occlusal piece, and the position of the square groove is aligned with the position of the upper tooth occlusal groove.

3. The mouth opening device for examining the temporomandibular joint as claimed in claim 2, characterized in that: The front part of the lower teeth occlusal piece is located in a square groove, and the lower teeth occlusal groove is aligned with the upper teeth occlusal groove in the upper and lower directions.

4. The mouth opening device for examining the temporomandibular joint as claimed in claim 3, characterized in that: The width of the lower teeth occlusal groove is smaller than that of the upper teeth occlusal groove; the inner side surface of the lower teeth occlusal groove is an inclined surface, and the bottom surface is a plane.

5. The mouth opener for examining the temporomandibular joint according to claim 1, characterized in that: The lower tooth occlusal piece and the mounting block are an integrated structure. A first threaded hole is arranged at one end of the mounting block, and the first threaded hole penetrates the mounting block to the middle of the lower tooth occlusal piece.

6. The mouth opener for examining the temporomandibular joint according to claim 5, characterized in that: The pressure plate mechanism comprises an engagement block, a square block, a second engagement rack and a second threaded hole, wherein the second threaded hole penetrates the engagement block, and the connecting screw is screwed into the second threaded hole and the first threaded hole in sequence to connect the pressure plate mechanism and the sliding member.

7. The mouth opener for examining the temporomandibular joint according to claim 6, characterized in that: A square block is arranged at the upper and lower ends of one side of the engagement block, and the square block is located in the second slide groove; a second engagement rack is arranged on the side of the engagement block, and the second engagement rack is located on the side of the square block.

8. The mouth opener for examining the temporomandibular joint as claimed in claim 7, characterized in that: A first meshing rack is disposed on the side of the upper occlusal member. The first meshing rack is located at both ends of the second groove. The first meshing rack is meshed with the second meshing rack.

9. The mouth opener for examining the temporomandibular joint according to claim 1, characterized in that: The sliding member is provided with a mounting groove, the mounting groove penetrates the sliding member, the lower tooth occlusal mechanism is plugged into the sliding member, and the mounting block of the lower tooth occlusal mechanism is located in the mounting groove.

10. The mouth opener for examining the temporomandibular joint according to claim 1, characterized in that: The surface of the sliding support is an arc-shaped surface, the inner surfaces of the first slide groove and the second slide groove are both arc-shaped, and the first slide groove and the second slide groove are interconnected; one end of the first slide groove is provided with an opening angle scale, and the other end is provided with an opening distance scale, and the opening angle scale and the opening distance scale are both arranged on the surface of the sliding support.

Images