Oral cavity opening and closing trainer used in radiotherapy rehabilitation

Abstract

The utility model discloses an oral cavity opening and closing trainer used in radiotherapy rehabilitation, belongs to the technical field of radiotherapy rehabilitation instruments, and aims to solve the problems that the teeth of a patient are easy to loosen and even fall off due to the fact that an opening and closing force is acted on the teeth of the patient by the conventional common oral cavity opening and closing trainer, and the later chewing ability of the patient is influenced. The oral cavity opening and closing trainer comprises an upper tooth cavity supporting assembly, a tongue supporting assembly, a flexible corrugated pipe, a communicating air pipe and a pneumatic source. The upper tooth cavity supporting assembly and the tongue supporting assembly are oppositely arranged up and down, the flexible corrugated pipe is arranged between the upper tooth cavity supporting assembly and the tongue supporting assembly, one end of the communicating air pipe is installed on the outer circle face of the flexible corrugated pipe, the communicating air pipe is communicated with the flexible corrugated pipe, and the other end of the communicating air pipe is communicated with the pneumatic source. The oral cavity opening and closing training device is mainly used as an auxiliary device for oral cavity opening and closing training of oral cancer patients in radiotherapy rehabilitation.

Description

Technical Field

[0001] The utility model belongs to the technical field of radiotherapy rehabilitation equipment, and in particular relates to an oral opening and closing training device used in radiotherapy rehabilitation. Background Art

[0002] Oral cancer patients need to open their mouths and be irradiated with lasers during radiotherapy. The energy generated by a large amount of radiation can damage the chromosomes of cells, stop the cells from growing, and eliminate cancer cells that can divide and grow rapidly. In this process, as cancer cells are eliminated, the muscle cells around the patient's mouth will also be damaged by radiotherapy. As the radiotherapy course continues, the patient will gradually lose the ability to open and close the mouth, especially for elderly patients. Due to their age, their muscle activity is relatively weak, and they are more likely to completely lose the ability to open and close the mouth after radiotherapy. This will have a great impact on the patient's eating and drinking in the future. Oral cancer patients need to perform oral opening and closing training after each radiotherapy process to ensure the motor activity of the muscles around the mouth to avoid losing the ability to open the mouth. This training method is best with active training. If some patients cannot actively train to open and close, they can also use oral opening and closing training The device is used to increase the amount of exercise of the muscles around the oral cavity. In the existing patent, the application number is: CN201410280641.7, and the name is: A postoperative oral function rehabilitation trainer. The patent scheme discloses a device for oral opening and closing training. However, the existing device applies force points to the patient's teeth, and the support plate is used to prop up the patient's teeth to achieve the action of opening and closing the patient's mouth. However, in actual treatment, the irradiation area of ​​the radiation will also have a certain impact on the patient's teeth, affecting the hardness of the teeth themselves and the connection strength between the teeth and the gums. Therefore, the long-term opening and closing force acts on the teeth, which will cause the teeth to loosen, especially for the elderly, and the teeth may fall out, which greatly affects the patient's later chewing ability. In addition, some elderly patients' teeth fall out with age, and it is difficult to find a suitable force point when using the existing oral opening and closing trainer, which also greatly affects the effect of opening and closing training. Utility Model Content

[0003] The utility model aims to solve the problem that the existing common oral opening and closing training device exerts opening and closing force on the patient's teeth, which easily causes the patient's teeth to become loose or even fall off, thereby affecting the patient's later chewing ability, and thus provides an oral opening and closing training device used in radiotherapy rehabilitation;

[0004] An oral opening and closing trainer used in radiotherapy rehabilitation, the oral opening and closing trainer comprising an upper tooth chamber support assembly, a tongue support assembly, a flexible bellows, a connecting air pipe and a pneumatic source; the upper tooth chamber support assembly and the tongue support assembly are arranged opposite to each other up and down, the flexible bellows is arranged between the upper tooth chamber support assembly and the tongue support assembly, and the top end of the flexible bellows is fixedly connected to the bottom of the upper tooth chamber support assembly, the bottom end of the flexible bellows is fixedly connected to the top of the tongue support assembly, one end of the connecting air pipe is installed on the outer circumferential surface of the flexible bellows, and the connecting air pipe is connected to the flexible bellows, and the other end of the connecting air pipe is connected to the pneumatic source;

[0005] Further, the upper tooth chamber support assembly includes an upper support plate, a silicone protective layer and a silicone support unit, the upper support plate is a crescent-shaped plate, and the outer contour surface of the upper support plate is matched with the contour surface of the upper tooth chamber of the oral cavity, the silicone protective layer is fixedly connected to the upper surface of the upper support plate, and the shape of the silicone protective layer is the same as that of the upper support plate, the silicone support unit is arranged on the upper surface of the silicone protective layer, and the silicone support unit and the silicone protective layer are integrally formed, and the top end of the flexible bellows is fixedly connected to the bottom of the upper support plate;

[0006] Furthermore, the height of the No. 1 support column is less than the height of the No. 2 support column, and the height of the No. 2 support column is less than the height of the central support column;

[0007] Further, the tongue support assembly includes a lower support plate and a tongue protection layer, the lower support plate is a crescent-shaped plate, and the outer contour surface of the lower support plate is matched with the contour surface of the tongue end, the tongue protection layer is fixedly connected to the lower surface of the tongue protection layer, and the shape of the tongue protection layer is the same as that of the lower support plate, and the bottom end of the flexible bellows is fixedly connected to the top of the lower support plate;

[0008] Furthermore, a sealing rubber sleeve is provided at the connection between the top end of the flexible bellows and the bottom of the upper support plate, and a sealing rubber sleeve is provided at the connection between the bottom end of the flexible bellows and the top of the upper support plate;

[0009] Furthermore, the oral opening and closing trainer further comprises two return spring groups, which are arranged on both sides of the flexible bellows, each return spring group comprises at least one return spring unit, the top of each return spring unit is fixedly connected to the bottom of the upper support plate, and the bottom of each return spring unit is fixedly connected to the top of the lower support plate;

[0010] Further, the return spring unit comprises a top connecting plate, a return spring and a bottom connecting plate, the top connecting plate and the bottom connecting plate are arranged parallel to each other in an upper and lower direction, the return spring is arranged between the top connecting plate and the bottom connecting plate, and the top end of the return spring is fixedly connected to the top connecting plate, and the bottom end of the return spring is fixedly connected to the bottom connecting plate, a plurality of No. 1 embedded holes are processed on the lower surface of the upper support plate, each No. 1 embedded hole is correspondingly arranged with a return spring unit, and each No. 1 embedded hole is matched with the top connecting plate in the corresponding return spring unit, a plurality of No. 2 embedded holes are processed on the upper surface of the lower support plate, each No. 2 embedded hole is correspondingly arranged with a return spring unit, and each No. 2 embedded hole is matched with the bottom connecting plate in the corresponding return spring unit, the top connecting plate in each return spring unit is correspondingly arranged in a No. 1 embedded hole, and the top connecting plate is fixedly connected to the inner wall of the No. 1 embedded hole, the bottom connecting plate in each return spring unit is correspondingly arranged in a No. 2 embedded hole, and the inner wall of the No. 2 embedded hole where the bottom connecting plate is located is fixedly connected;

[0011] The beneficial effects of this application compared to the prior art are as follows:

[0012] The present application provides an oral opening and closing trainer for use in radiotherapy rehabilitation, in which the force application point is not on the patient's teeth, but on the patient's upper dental cavity and tongue. After such a configuration, the auxiliary opening and closing force will directly act on the patient's upper dental cavity bone, and will not cause further damage to the patient's teeth. In addition, compared with the existing opener and closer that uses teeth as the force point, the oral opening and closing trainer of the present application has higher stability when in use. First, the contact area between the existing opening and closing plates and the teeth is limited, and the opening and closing plates are mostly rigidly connected, and the oral cavity presents a fan-shaped movement when opening and closing, so as the oral cavity opens and closes, the opening and closing of the oral cavity is more stable. The greater the degree, the smaller the opening and closing plate is inside the oral cavity. After multiple opening and closing trainings, the opening and closing plate may come off the teeth, and the trainer needs to be reinstalled. The force points in the present application are on the upper dental cavity and the tongue, and the contact area with the support plate is larger. The teeth also limit the support plate, so it will not fall off during use. A silicone protective layer is provided on the support plate, which can flexibly contact the skin on the upper dental cavity and the tongue, effectively protecting the skin. The trainer described in the present application can also be used for patients with excessive tooth loss, and can achieve a good opening and closing training purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main view of the oral opening and closing training device described in this application (under normal conditions);

[0014] Figure 2 This is a schematic diagram of the front view of the oral opening and closing trainer described in the present application (in the inflated state);

[0015] Figure 3A side view of the oral opening and closing training device of the present application placed in the oral cavity;

[0016] Figure 4 This is a schematic diagram of a silicone support unit in the oral opening and closing trainer described in the present application;

[0017] Figure 5 This is a schematic top view of the lower support plate of the oral opening and closing trainer described in this application;

[0018] Figure 6 This is a bottom view schematic diagram of the upper support plate in the oral opening and closing trainer described in the present application;

[0019] Figure 7 This is a bottom view schematic diagram of the tongue protection layer in the oral opening and closing trainer described in the present application;

[0020] Figure 8 This is a side view of the oral opening and closing trainer described in the present application placed in the oral cavity (with a return spring assembly);

[0021] Fig. 9 It is a front view schematic diagram of the return spring unit in the oral opening and closing trainer described in the present application;

[0022] Fig.10 This is a schematic diagram of the working state of the upper tooth chamber support component and the tongue support component of the oral opening and closing trainer described in the present application when the upper tooth chamber support component and the tongue support component are working in the oral cavity;

[0023] In the figure, 1 is an upper support plate, 11 is a No. 1 embedding hole, 2 is a lower support plate, 21 is a No. 2 embedding hole, 3 is a silicone protective layer, 4 is a tongue protective layer, 5 is a silicone support unit, 51 is a No. 1 support column, 52 is a No. 2 support column, 53 is a center support column, 6 is a flexible bellows, 7 is a connecting air pipe, 8 is a pneumatic source, 9 is a return spring unit, 91 is a top connecting plate, 92 is a return spring and 93 is a bottom connecting plate. DETAILED DESCRIPTION

[0024] Specific implementation method 1: Combination Figures 1 to 10 The present embodiment is described. The present embodiment provides an oral opening and closing trainer for use in radiotherapy rehabilitation, wherein the oral opening and closing trainer comprises an upper tooth chamber support assembly, a tongue support assembly, a flexible bellows 6, a connecting air tube 7 and a pneumatic source 8; the upper tooth chamber support assembly and the tongue support assembly are arranged relatively to each other up and down, the flexible bellows 6 is arranged between the upper tooth chamber support assembly and the tongue support assembly, and the top end of the flexible bellows 6 is fixedly connected to the bottom of the upper tooth chamber support assembly, the bottom end of the flexible bellows 6 is fixedly connected to the top of the tongue support assembly, one end of the connecting air tube 7 is installed on the outer circumferential surface of the flexible bellows 6, and the connecting air tube 7 is connected to the flexible bellows 6, and the other end of the connecting air tube 7 is connected to the pneumatic source 8.

[0025] The oral opening and closing trainer described in this embodiment adopts pneumatic method as the power source. The pneumatic source 8 can be a manually compressed air bag or an external small air pump. The manually compressed air bag is more commonly used. The patient can hold and press the air bag to inject air into the flexible bellows 6 to make the flexible bellows 6 expand and contract, thereby driving the distance between the upper tooth chamber support component and the tongue support component to increase or decrease, thereby realizing the auxiliary oral opening and closing action;

[0026] The flexible bellows 6 and the connecting air pipe 7 can be connected in an integrated fixed manner or in a detachable manner. A connecting pipe can be arranged on the outer circumferential surface of the flexible bellows 6, one end of the connecting pipe is fixedly connected to and connected with the flexible bellows 6, an external thread is processed on the outer circumferential surface of the other end of the connecting pipe, and an internal thread is processed on the connecting end of the connecting air pipe 7 and the flexible bellows 6. The flexible bellows 6 and the connecting air pipe 7 can be detachably connected by means of a threaded connection. In this way, when a part of the trainer is damaged, it can be repaired or replaced in different areas, which can save maintenance costs.

[0027] Specific implementation method 2: Combination Figures 1 to 10 This embodiment is described. The difference between this embodiment and the first embodiment is that the upper tooth cavity support assembly includes an upper support plate 1, a silicone protective layer 3 and a silicone support unit 5. The upper support plate 1 is a crescent-shaped plate, and the outer contour surface of the upper support plate 1 is matched with the contour surface of the upper tooth cavity of the oral cavity. The silicone protective layer 3 is fixedly connected to the upper surface of the upper support plate 1, and the shape of the silicone protective layer 3 is the same as that of the upper support plate 1. The silicone support unit 5 is arranged on the upper surface of the silicone protective layer 3, and the silicone support unit 5 is integrally formed with the silicone protective layer 3. The top end of the flexible bellows 6 is fixedly connected to the bottom of the upper support plate 1. Other components and connection methods are the same as those in the first embodiment.

[0028] Such a setting can ensure that the shape of the upper support plate 1 is consistent with the shape of the upper tooth chamber, which can provide better support and is not easy to move during support. At the same time, it can also be limited by the inner side of the upper teeth, making it difficult for the upper tooth chamber support component to slip out of the mouth during operation.

[0029] Specific implementation method three: Combination Figures 1 to 10This embodiment is described. The difference between this embodiment and the second embodiment is that the silicone support unit 5 includes a central support column 53, two No. 1 support columns 51 and two No. 2 support columns 52. The central support column 53 is arranged at the center of the upper surface of the silicone protective layer 3, and the bottom of the central support column 53 is formed integrally with the silicone protective layer 3, and the top of the central support column 53 is a hemispherical setting. The two No. 1 support columns 51 are respectively arranged at one end of the upper surface of the silicone protective layer 3, and the bottom of each No. 1 support column 51 is formed integrally with the silicone protective layer 3, and the top of each No. 1 support column 51 is a hemispherical setting. Each No. 2 support column 52 is arranged between a No. 1 support column 51 and the central support column 53, and the bottom of each No. 2 support column 52 is formed integrally with the silicone protective layer 3, and the top of each No. 2 support column 52 is a hemispherical setting. Other components and connection methods are the same as those of the second embodiment.

[0030] In the present embodiment, the silicone support unit 5 is used to ensure the patient's upper dental cavity. First of all, the human upper dental cavity is not an absolutely flat structure, but an arch-like structure, and it has a downward trend as it extends from the center to both ends. Therefore, three supporting silicone columns of different heights are arranged in the silicone support unit 5 to support different areas of the upper dental cavity. Silicone has a high deformability and can fit the contour surface of the upper dental cavity, thereby improving the patient's comfort and stability.

[0031] Specific implementation method four: Combination Figures 1 to 10 This embodiment is described, and the difference between this embodiment and the third embodiment is that the height of the first support column 51 is less than the height of the second support column 52, and the height of the second support column 52 is less than the height of the central support column 53. Other components and connection methods are the same as those of the third embodiment.

[0032] Specific implementation method five: Combination Figures 1 to 10 This embodiment is described. The difference between this embodiment and the fourth embodiment is that the tongue support assembly includes a lower support plate 2 and a tongue protection layer 4. The lower support plate 2 is a crescent-shaped plate, and the outer contour surface of the lower support plate 2 is matched with the contour surface of the tongue end. The tongue protection layer 4 is fixedly connected to the lower surface of the tongue protection layer 4, and the shape of the tongue protection layer 4 is the same as that of the lower support plate 2. The bottom end of the flexible bellows 6 is fixedly connected to the top of the lower support plate 2. Other components and connection methods are the same as those of the fourth embodiment.

[0033] In this way, the tongue protection layer 4 is made of silicone material, and in order to increase the tightness of the connection between the tongue support assembly and the tongue, a shallow grid texture can be added to the bottom of the tongue protection layer 4 to avoid slipping of the tongue protection layer 4 caused by excessive saliva during use.

[0034] Specific implementation method six: Combination Figures 1 to 10 This embodiment is described. The difference between this embodiment and the fifth embodiment is that a sealing rubber sleeve is provided at the connection between the top end of the flexible bellows 6 and the bottom of the upper support plate 1, and a sealing rubber sleeve is provided at the connection between the bottom end of the flexible bellows 6 and the top of the upper support plate 1. The other components and connection methods are the same as those of the fifth embodiment.

[0035] This setting is to avoid air leakage at the connection point, which would affect the use effect.

[0036] Specific implementation method seven: Combination Figures 1 to 10 This embodiment is described. The difference between this embodiment and the sixth embodiment is that the oral opening and closing trainer further includes two return spring groups, which are arranged on both sides of the flexible bellows 6. Each return spring group includes at least one return spring unit 9. The top of each return spring unit 9 is fixedly connected to the bottom of the upper support plate 1, and the bottom of each return spring unit 9 is fixedly connected to the top of the lower support plate 2. Other components and connection methods are the same as those of the sixth embodiment.

[0037] This arrangement is made taking into account that some older patients have limited force exerted by their upper and lower jaw muscles when the device area is open and closed, which is insufficient to compress the gas in the flexible bellows 6 into the hand-pressed airbag by closing their mouths. Therefore, a reset spring group is configured. After the patient relaxes the airbag, the gas in the flexible bellows 6 will partially flow back, but with the auxiliary stretching of the reset spring group, the distance between the upper tooth chamber support assembly and the tongue support assembly is shortened to provide auxiliary squeezing force. Under the auxiliary squeezing force, the gas in the flexible bellows 6 can be discharged and returned to the hand-pressed airbag along the guide tube for subsequent use.

[0038] Specific implementation method eight: Combination Figures 1 to 10The present embodiment is described. The present embodiment is different from the specific embodiment 7 in that the return spring unit 9 includes a top connecting plate 91, a return spring 92 and a bottom connecting plate 93. The top connecting plate 91 and the bottom connecting plate 93 are arranged parallel to each other, and the return spring 92 is arranged between the top connecting plate 91 and the bottom connecting plate 93. The top end of the return spring 92 is fixedly connected to the top connecting plate 91, and the bottom end of the return spring 92 is fixedly connected to the bottom connecting plate 93. A plurality of No. 1 embedded holes 11 are processed on the lower surface of the upper support plate 1, and each No. 1 embedded hole 11 is arranged corresponding to a return spring unit 9, and each No. 1 embedded hole 11 is arranged corresponding to a return spring unit 9. The top connecting plate 91 in the corresponding reset spring unit 9 is matched and arranged, and a plurality of No. 2 embedded holes 21 are processed on the upper surface of the lower support plate 2, each No. 2 embedded hole 21 is set correspondingly to a reset spring unit 9, and each No. 2 embedded hole 21 is matched and arranged with the bottom connecting plate 93 in the corresponding reset spring unit 9, the top connecting plate 91 in each reset spring unit 9 is set correspondingly to a No. 1 embedded hole 11, and the top connecting plate 91 is fixedly connected to the inner wall of the No. 1 embedded hole 11, and the bottom connecting plate 93 in each reset spring unit 9 is set correspondingly to a No. 2 embedded hole 21, and the inner wall of the No. 2 embedded hole 21 where the bottom connecting plate 93 is located is fixedly connected. Other components and connection methods are the same as those in the specific embodiment 7.

[0039] In this arrangement, the first embedding hole 11 and the second embedding hole 21 mainly play the role of limiting the return spring unit 9, thereby ensuring the accuracy and stability of its installation.

[0040] The present invention has been disclosed as above with preferred implementation cases, but it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent implementation cases with equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0041] How it works

[0042] When the utility model is used, the various components are first assembled together according to the connection relationship described in specific embodiments one to eight. When in use, the patient's mouth is first opened using the duckbill plate and other components, and the entrance part composed of the upper tooth cavity support component, the tongue support component and the flexible bellows is inserted into the patient's oral cavity, and the position is adjusted until the patient feels comfortable or acceptable. Secondly, the pneumatic source 8 (hand-pressed air bag) is pressed to inject air into the flexible bellows to extend the flexible bellows 6. Under the action of the flexible bellows 6, the distance between the upper tooth cavity support component and the tongue support component becomes larger, and the upper and lower jaws of the patient are separated, so that the patient's oral cavity is opened. Action, relax the pneumatic source 8 (hand-pressed air bag), and then cooperate with the force of the patient's oral closure to compress the gas in the flexible bellows 6 into the hand-pressed air bag. If the patient cannot provide sufficient closing force, a reset spring group can be configured on the basic structure, and when the patient relaxes the pneumatic source 8 (hand-pressed air bag), the gas in the flexible bellows 6 will partially flow back, but under the auxiliary stretching of the reset spring group, the distance between the upper tooth cavity support assembly and the tongue support assembly is shortened to provide auxiliary squeezing force. Under the state of auxiliary squeezing force, the gas in the flexible bellows 6 can be discharged and returned to the pneumatic source 8 (hand-pressed air bag) along the guide tube. The operation is repeated to achieve the purpose of training the opening and closing of the oral cavity.

Claims

1. An oral opening and closing training device used in radiotherapy rehabilitation, characterized in that: The oral opening and closing trainer comprises an upper tooth chamber support assembly, a tongue support assembly, a flexible bellows (6), a connecting air pipe (7) and a pneumatic source (8); the upper tooth chamber support assembly and the tongue support assembly are arranged opposite to each other in the upper and lower parts, the flexible bellows (6) is arranged between the upper tooth chamber support assembly and the tongue support assembly, and the top end of the flexible bellows (6) is fixedly connected to the bottom of the upper tooth chamber support assembly, the bottom end of the flexible bellows (6) is fixedly connected to the top of the tongue support assembly, one end of the connecting air pipe (7) is installed on the outer circumferential surface of the flexible bellows (6), and the connecting air pipe (7) is connected to the flexible bellows (6), and the other end of the connecting air pipe (7) is connected to the pneumatic source (8).

2. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 1, characterized in that: The upper tooth cavity support assembly comprises an upper support plate (1), a silicone protective layer (3) and a silicone support unit (5); the upper support plate (1) is a crescent-shaped plate, and the outer contour surface of the upper support plate (1) is arranged in coordination with the contour surface of the upper tooth cavity of the oral cavity; the silicone protective layer (3) is fixedly connected to the upper surface of the upper support plate (1), and the shape of the silicone protective layer (3) is the same as that of the upper support plate (1); the silicone support unit (5) is arranged on the upper surface of the silicone protective layer (3), and the silicone support unit (5) and the silicone protective layer (3) are integrally formed; the top end of the flexible bellows (6) is fixedly connected to the bottom end of the upper support plate (1).

3. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 2, characterized in that: The silicone support unit (5) comprises a central support column (53), two No. 1 support columns (51) and two No. 2 support columns (52); the central support column (53) is arranged at the center of the upper surface of the silicone protective layer (3), and the bottom of the central support column (53) is integrally formed with the silicone protective layer (3), and the top of the central support column (53) is a hemispherical surface; the two No. 1 support columns (51) are respectively arranged at one end of the upper surface of the silicone protective layer (3), and the bottom of each No. 1 support column (51) is integrally formed with the silicone protective layer (3), and the top of each No. 1 support column (51) is a hemispherical surface; each No. 2 support column (52) is arranged between a No. 1 support column (51) and the central support column (53), and the bottom of each No. 2 support column (52) is integrally formed with the silicone protective layer (3), and the top of each No. 2 support column (52) is a hemispherical surface.

4. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 3, characterized in that: The height of the No. 1 support column (51) is smaller than the height of the No. 2 support column (52), and the height of the No. 2 support column (52) is smaller than the height of the central support column (53).

5. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 4, characterized in that: The tongue support assembly comprises a lower support plate (2) and a tongue protection layer (4); the lower support plate (2) is a crescent-shaped plate, and the outer contour surface of the lower support plate (2) is arranged in coordination with the contour surface of the end of the tongue; the tongue protection layer (4) is fixedly connected to the lower surface of the tongue protection layer (4), and the shape of the tongue protection layer (4) is the same as that of the lower support plate (2); the bottom end of the flexible bellows (6) is fixedly connected to the top of the lower support plate (2).

6. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 5, characterized in that: A sealing rubber sleeve is provided at the connection between the top end of the flexible bellows (6) and the bottom of the upper support plate (1), and a sealing rubber sleeve is provided at the connection between the bottom end of the flexible bellows (6) and the top of the upper support plate (1).

7. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 6, characterized in that: The oral opening and closing trainer further comprises two return spring groups, which are arranged on both sides of the flexible bellows (6), each return spring group comprising at least one return spring unit (9), the top of each return spring unit (9) being fixedly connected to the bottom of the upper support plate (1), and the bottom of each return spring unit (9) being fixedly connected to the top of the lower support plate (2).

8. The oral opening and closing training device used in radiotherapy rehabilitation according to claim 7, characterized in that: The return spring unit (9) comprises a top connecting plate (91), a return spring (92) and a bottom connecting plate (93), wherein the top connecting plate (91) and the bottom connecting plate (93) are arranged parallel to each other in an upper and lower direction, the return spring (92) is arranged between the top connecting plate (91) and the bottom connecting plate (93), and the top end of the return spring (92) is fixedly connected to the top connecting plate (91), and the bottom end of the return spring (92) is fixedly connected to the bottom connecting plate (93), and a plurality of number one embedded holes (11) are processed on the lower surface of the upper support plate (1), and each number one embedded hole (11) is arranged corresponding to a return spring unit (9), and each number one embedded hole (11) is connected to the top of the corresponding return spring unit (9). The top connecting plate (91) is arranged in cooperation with the top connecting plate (91), and a plurality of No. 2 embedded holes (21) are processed on the upper surface of the lower support plate (2), each No. 2 embedded hole (21) is arranged correspondingly to a reset spring unit (9), and each No. 2 embedded hole (21) is arranged in cooperation with the bottom connecting plate (93) in the corresponding reset spring unit (9), the top connecting plate (91) in each reset spring unit (9) is arranged correspondingly in a No. 1 embedded hole (11), and the top connecting plate (91) is fixedly connected to the inner wall of the No. 1 embedded hole (11), and the bottom connecting plate (93) in each reset spring unit (9) is arranged correspondingly in a No. 2 embedded hole (21), and the bottom connecting plate (93) is fixedly connected to the inner wall of the No. 2 embedded hole (21) where the bottom connecting plate (93) is located.

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