Orthosis for treating instable distal radioulnar joint

Abstract

The invention belongs to the technical field of orthotics, and particularly relates to an orthotics for treating instable distal radioulnar joints, which comprises an upper arm support, a front arm support, a palm back support and a palm center support, the upper arm support and the front arm support are connected through a rotatable support, the front arm support and the palm center support are connected through an adjusting mechanism, and binding bands are arranged on the palm center support and the palm back support. When a patient feels that the hand is hot and sweats, the motor is adopted to drive the output shaft to rotate periodically, when the driving plate passes through the sliding plate, the sliding plate is pushed to move, then the sliding plate pushes air in the hollow block to the air outlet hole and blows the air to the hand of the patient, the hand cooling effect is achieved, and once the driving plate completely passes through the sliding plate, the hand is cooled. The first spring drives the sliding plate to reset upwards, the sliding plate can repeatedly move up and down through continuous rotation of the driving plate, it is ensured that air in the cavity can be continuously blown to the hands of the patient through the air outlet holes, and therefore cooling is continuously conducted.

Description

Technical Field

[0001] This invention belongs to the field of orthotics technology, specifically an orthotics for treating instability of the distal radioulnar joint. Background Technology

[0002] An orthosis for treating distal radioulnar joint instability is a medical device used to correct and stabilize the distal radioulnar joint, a part of the wrist joint composed of the ulna and radius. When this joint is unstable, it can cause pain, swelling, and dysfunction. An orthosis can help alleviate symptoms and promote healing by providing support and restricting joint movement. These orthoses are typically made of metal, plastic, or other durable materials and are custom-made to fit the patient's condition and needs. They can be fixed to the wrist or forearm to keep the joint in the correct position. The shape and design of the orthosis can prevent excessive joint movement, thereby reducing wear and inflammation.

[0003] However, the above-mentioned technologies often have the following drawbacks: since the wearing of orthotics needs to ensure that the hand is covered, in the hot season, the hand is prone to sweating due to the increased temperature. This phenomenon is attributed to the limited ventilation of the hand after wearing the orthotics, which in turn causes discomfort to the wearer. Therefore, the present invention provides an orthotics for treating instability of the distal radioulnar joint. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides an orthosis for treating instability of the distal radioulnar joint, comprising an upper arm support, a forearm support, a back of the hand support, and a palm support; the upper arm support and the forearm support are provided with a rotatable bracket connection, the forearm support and the palm support are connected by an adjustment mechanism, and the palm support and the back of the hand support are provided with straps.

[0006] A hollow block is fixedly connected to the side wall of the palm rest. Multiple sets of air vents are opened between the bottom surface of the hollow block and the palm rest. A sliding plate is slidably connected to the inner wall of the hollow block. A set of first springs is fixedly connected between the bottom surface of the sliding plate and the inner wall of the hollow block.

[0007] A motor located above the slide plate is fixedly connected to the inner wall of the hollow block. An output shaft is rotatably connected to one side of the motor, and a drive plate for pushing the slide plate is fixedly connected to the output shaft.

[0008] An elastic sleeve is fixedly connected to the top surface of the skateboard. A connecting tube is connected inside the elastic sleeve. The other end of the connecting tube is connected to a hollow fixing block. The fixing block is fixedly installed on the upper arm support. An air vent groove is provided between the fixing block and the upper arm support.

[0009] A magnetic plate is fixedly connected to the top surface of the inner wall of the elastic sleeve, and the driving plate is made of a magnetic material that repels the magnetic plate.

[0010] The hollow block has a cavity, and a rotating shaft is rotatably connected inside the cavity. A connecting shaft is fixedly connected to the side of the rotating shaft near the motor, and a connecting plate is fixedly connected to the side of the connecting shaft near the motor. A push plate that pushes the connecting plate is fixedly connected to the output shaft. One end of the strap is fixedly connected to the connecting shaft, and the surface of the strap is slidably connected to the top surface of the hollow block. A locking mechanism for locking the rotating shaft is provided inside the cavity.

[0011] The locking mechanism includes a gear fixed on a rotating shaft, a movable block slidably connected to the inner wall of the cavity, a pawl that meshes with the gear on the movable block, a rectangular plate fixedly connected to the side of the cavity near the movable block, a second spring fixedly connected between the rectangular plate and the movable block, a connecting line fixedly connected to the side wall of the movable block, and the other end of the connecting line extending to the outside of the hollow block.

[0012] A massage ball is installed inside the air outlet and fits against its inner wall. An elastic line is fixedly connected between the side wall of the massage ball and the inner wall of the air outlet.

[0013] The adjustment mechanism includes a connecting frame and an adjusting frame. The connecting frame is fixedly connected to the forearm support, and the adjusting frame is fixedly connected to the palm support. The adjusting frame is slidably and sealed to the inner wall of the connecting frame. An air inlet is provided on the connecting frame, and a sealing post is engaged in the air inlet.

[0014] A round rod is fixedly connected to the top surface of the inner wall of the connecting frame, and a clamping plate is fixedly connected to the bottom surface of the round rod. A hollow groove is opened inside the sealing column, and a through groove communicating with the hollow groove is opened on the top surface of the sealing column. The shape of the through groove is the same as that of the clamping plate. A third spring is provided between the top surface of the sealing column and the inner wall of the adjusting frame. A set of connecting grooves is opened on the side wall of the sealing column.

[0015] The bottom surface of the connecting frame is fitted with a protective shell that is sleeved on the sealing column by a torsion spring.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. When a patient feels their hands are hot and sweaty, the present invention uses a motor to drive the output shaft to rotate periodically. When the drive plate passes the slide plate, it pushes the slide plate to move, and the slide plate pushes the gas in the hollow block to the air outlet and blows it towards the patient's hands to achieve a cooling effect. Once the drive plate has completely passed the slide plate, the first spring will cause the slide plate to return to its original position. Through the continuous rotation of the drive plate, the slide plate can move up and down repeatedly to ensure that the gas in the cavity can be continuously blown towards the patient's hands through the air outlet, thereby continuously cooling the hands.

[0018] 2. During the rotation of the drive plate, the present invention first generates power to act on the elastic sleeve, causing it to be compressed. Subsequently, this compression process causes the gas inside the elastic sleeve to be driven and transmitted to the fixed block through the connecting pipe. Finally, this gas will be released through the air outlet groove to form an airflow, which performs targeted air blowing and cooling operation on the upper arm. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the upper arm support, forearm support, back of hand support, and palm support in this invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the hollow block in this invention;

[0023] Figure 4 yes Figure 3 Enlarged view of point A;

[0024] Figure 5 This is a partial structural cross-sectional view of the hollow block in this invention;

[0025] Figure 6 yes Figure 5 Enlarged view of point B;

[0026] Figure 7 This is a schematic diagram of the adjustment mechanism in this invention;

[0027] Figure 8 yes Figure 7 Enlarged view of point C in the image.

[0028] In the diagram: 1. Upper arm support; 2. Forearm support; 3. Back of hand support; 4. Palm support; 5. Hollow block; 6. Slide board; 7. Motor; 8. Drive board; 9. Output shaft; 10. Vent; 11. Magnetic plate; 12. Elastic sleeve; 13. Connecting pipe; 14. Fixing block; 15. Connecting shaft; 16. Strap; 17. Rotating shaft; 18. Gear; 19. Cavity; 20. Push plate; 21. Connecting plate; 22. Connecting line; 23. Moving block; 24. Pawl; 25. Rectangular plate; 26. Massage ball; 27. Connecting frame; 28. Adjusting frame; 29. ​​Round rod; 30. Sealing column; 31. Through groove; 32. Clamping plate; 33. Protective shell. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0030] Example 1: As Figures 1 to 6 As shown in the embodiment of the present invention, an orthosis for treating distal radioulnar joint instability includes an upper arm support 1, a forearm support 2, a back of the hand support 3, and a palm support 4; the upper arm support 1 and the forearm support 2 are provided with a rotatable bracket connection, the forearm support 2 and the palm support 4 are connected by an adjustment mechanism, and the palm support 4 and the back of the hand support 3 are provided with straps 16.

[0031] A hollow block 5 is fixedly connected to the side wall of the palm back support 3. Multiple sets of air vents 10 are opened between the bottom surface of the hollow block 5 and the palm back support 3. A sliding plate 6 is slidably connected to the inner wall of the hollow block 5. A set of first springs is fixedly connected between the bottom surface of the sliding plate 6 and the inner wall of the hollow block 5.

[0032] The inner wall of the hollow block 5 is fixedly connected to a motor 7 located above the slide plate 6. An output shaft 9 is rotatably connected to one side of the motor 7, and a drive plate 8 for pushing the slide plate 6 is fixedly connected to the output shaft 9.

[0033] When a patient feels their hands are hot and sweaty, the present invention uses a motor 7 to drive the output shaft 9 to rotate periodically. When the drive plate 8 passes the slide plate 6, it pushes the slide plate 6 to move, and the slide plate 6 pushes the gas in the hollow block 5 to the air outlet 10 and blows it onto the patient's hands to achieve a cooling effect. Once the drive plate 8 has completely passed the slide plate 6, the first spring will cause the slide plate 6 to return to its original position. Through the continuous rotation of the drive plate 8, the slide plate 6 can move up and down repeatedly to ensure that the gas in the cavity 19 can be continuously blown onto the patient's hands through the air outlet 10, thereby continuously cooling the hands.

[0034] An elastic sleeve 12 is fixedly connected to the top surface of the slide plate 6. A connecting pipe 13 is connected inside the elastic sleeve 12. The other end of the connecting pipe 13 is connected to a hollow fixing block 14. The fixing block 14 is fixedly installed on the upper arm support 1. An air outlet groove is opened between the fixing block 14 and the upper arm support 1. During the rotation of the drive plate 8, the present invention first generates power to act on the elastic sleeve 12, causing it to be compressed. Subsequently, this compression process causes the gas inside the elastic sleeve 12 to be driven and transmitted to the inside of the fixing block 14 through the connecting pipe 13. Finally, this gas will be released through the air outlet groove to form an airflow, which performs targeted air blowing and cooling operation on the upper arm.

[0035] A magnetic plate 11 is fixedly connected to the top surface of the inner wall of the elastic sleeve 12. The driving plate 8 is made of a magnetic material that repels the magnetic plate 11. When the driving plate 8 moves to a position close to the elastic sleeve 12, the driving plate 8 will push the magnetic plate 11, which in turn will cause the top surface of the elastic sleeve 12 to deform downward. This deformation process causes the gas in the elastic sleeve 12 to be pushed to the connecting pipe 13 and finally flow into the fixed block 14. Subsequently, the magnetic plate 11 comes into contact with the sliding plate 6 and pushes it to move downward. In this process, by utilizing the repulsive properties of magnetism, it is ensured that there is no direct contact between the driving plate 8 and the sliding plate 6, thereby effectively avoiding noise caused by the collision between the two.

[0036] The hollow block 5 has a cavity 19, and a rotating shaft 17 is rotatably connected inside the cavity 19. A connecting shaft 15 is fixedly connected to the side of the rotating shaft 17 near the motor 7. A connecting plate 21 is fixedly connected to the side of the connecting shaft 15 near the motor 7. A push plate 20 that pushes the connecting plate 21 is fixedly connected to the output shaft 9. One end of the strap 16 is fixedly connected to the connecting shaft 15. The surface of the strap 16 is slidably connected to the top surface of the hollow block 5. A locking mechanism for locking the rotating shaft 17 is provided inside the cavity 19.

[0037] When using this invention, the back of the hand support 3 and the palm support 4 are first securely fixed to the patient's hand by the strap 16. Then, the motor 7 is started, driving the output shaft 9 to move the push plate 20, which in turn pushes the connecting plate 21. The movement of the connecting plate 21 will cause the connecting shaft 15 to rotate. At this time, the strap 16 will wrap around the connecting shaft 15, thereby tightening the strap 16. When the strap 16 is tightened to a suitable degree, the locking mechanism is used to lock the rotating shaft 17 to ensure its stability. This design allows the strap 16 to adapt to different users' arm sizes, achieve personalized adjustment, and ensure comfort and stability during use.

[0038] The locking mechanism includes a gear 18 fixed on the rotating shaft 17. A movable block 23 is slidably connected to the inner wall of the cavity 19. A pawl 24 that meshes with the gear 18 is provided on the movable block 23. A rectangular plate 25 is fixedly connected to the side of the cavity 19 near the movable block 23. A second spring is fixedly connected between the rectangular plate 25 and the movable block 23. A connecting line 22 is fixedly connected to the side wall of the movable block 23, and the other end of the connecting line 22 extends to the outside of the hollow block 5. Through careful design, this invention achieves precise engagement between the pawl 24 and the gear 18, thereby ensuring that the rotating shaft 17 moves unidirectionally in a specific direction. The design ensures that the rotating shaft 17 will automatically lock after the strap 16 is tightened to prevent accidental loosening. When the strap 16 needs to be released, the user only needs to pull the connecting line 22. This operation will drive the moving block 23 to move the pawl 24 away from the locked position of the gear 18, thereby releasing the locking state of the gear 18. Subsequently, the operable motor can make the output shaft 9 rotate in the opposite direction. Through the synergistic action of the push plate 20 pushing the connecting plate 21, the connecting shaft 15 will rotate accordingly, finally realizing the smooth release of the strap 16 from the connecting shaft 15. The entire operation process is rigorous and stable, ensuring the safety and reliability of the device.

[0039] The air outlet 10 is equipped with a massage ball 26 that fits against its inner wall. An elastic line is fixedly connected between the side wall of the massage ball 26 and the inner wall of the air outlet 10. Inside the hollow block 5, when the gas is pushed by the slide plate 6, the gas will naturally flow into the air outlet 10. As the slide plate 6 moves, the gas pressure inside the hollow block 5 gradually increases, eventually causing all the massage balls 26 to detach from the air outlet 10 simultaneously. At this time, the gas will be blown out evenly through the air outlet 10, significantly improving the air cooling effect on the hand. At the same time, the massage balls 26 impact the hand under the push of air pressure, realizing the massage function of the hand, thereby enhancing the user's comfort.

[0040] Example 2: Figures 7 to 8As shown in the comparative embodiment one, another embodiment of the present invention is as follows: The adjustment mechanism includes a connecting frame 27 and an adjusting frame 28. The connecting frame 27 is fixedly connected to the forearm support 2, and the adjusting frame 28 is fixedly connected to the palm support 4. The adjusting frame 28 is slidably connected to the inner wall of the connecting frame 27. An air inlet is provided on the connecting frame 27, and a sealing post 30 is engaged in the air inlet. Given that the forearm lengths of different patients vary, in order to ensure the comfort and safety of the patient, the distance between the forearm support 2 and the palm support 4 needs to be precisely adjusted. In this process, the patient can first remove the sealing post 30 from the air inlet, and then move the adjusting frame 28 to adjust the distance between the two to a suitable position. After the position is properly adjusted, the sealing post 30 is re-engaged into the air inlet. At this time, the gas flow in the connecting frame 27 will be blocked, thereby locking the adjusting frame 28 and preventing it from moving further. This mechanism is designed to provide users with a convenient and stable solution for adjusting the distance between the forearm support and the palm support.

[0041] A round rod 29 is fixedly connected to the top surface of the inner wall of the connecting frame 27, and a clamping plate 32 is fixedly connected to the bottom surface of the round rod 29. A hollow groove is opened inside the sealing column 30, and a through groove 31 communicating with the hollow groove is opened on the top surface of the sealing column 30. The shape of the through groove 31 is the same as that of the clamping plate 32. A third spring is provided between the top surface of the sealing column 30 and the inner wall of the adjusting frame 28. A set of connecting grooves is opened on the side wall of the sealing column 30.

[0042] When the sealing column 30 is inserted into the air inlet, its retaining plate 32 will enter the hollow groove through the through groove 31. Subsequently, by rotating the sealing column 30, the retaining plate 32 and the through groove 31 can be misaligned. At this time, the retaining plate 32 will be firmly locked by the hollow groove, ensuring that the sealing column 30 is stably fixed in the air inlet and effectively preventing it from falling off. When it is necessary to move the adjusting frame 28, the sealing column 30 should be rotated first to align the retaining plate 32 with the through groove 31. At this time, the third spring will play a role in pushing the sealing column 30 so that the connecting groove on its side wall contacts the outside. However, the sealing column 30 is not completely detached from the air inlet, thus preventing the sealing column 30 from being lost. At this time, the adjusting frame 28 can be moved normally.

[0043] The bottom surface of the connecting frame 27 is torn to a protective shell 33 that is sleeved on the sealing column 30 by a torsion spring; the present invention uses the protective shell 33 to implement a protection mechanism for the sealing column 30, which aims to effectively prevent accidental contact with the sealing column 30, thereby ensuring that the normal operation of the connecting frame 27 and the adjusting frame 28 is not disturbed.

[0044] Working principle: When the patient feels heat and sweat in their hands, the present invention uses motor 7 to drive output shaft 9 to rotate periodically. When drive plate 8 passes slide plate 6, it pushes slide plate 6 to move. In turn, slide plate 6 pushes the gas in hollow block 5 to air outlet 10 and blows it onto the patient's hands to achieve a cooling effect. Once drive plate 8 has completely passed slide plate 6, the first spring will cause slide plate 6 to return to its original position. Through the continuous rotation of drive plate 8, slide plate 6 can move up and down repeatedly to ensure that the gas in cavity 19 can be continuously blown onto the patient's hands through air outlet 10, thereby continuously cooling the hands. During the rotation of drive plate 8, the present invention first generates power to act on elastic sleeve 12, causing it to be compressed. Subsequently, this compression process causes the gas inside elastic sleeve 12 to be driven and transmitted to fixed block 14 through connecting pipe 13. Finally, this gas will be released through air outlet groove to form airflow, which performs targeted blowing cooling operation on the upper arm.

[0045] When the drive plate 8 moves close to the elastic sleeve 12, it pushes the magnetic plate 11, which in turn causes the top surface of the elastic sleeve 12 to deform downwards. This deformation process pushes the gas inside the elastic sleeve 12 to the connecting pipe 13 and eventually into the fixing block 14. Subsequently, the magnetic plate 11 contacts the sliding plate 6 and pushes it downwards. During this process, by utilizing the repulsive properties of magnetism, direct contact between the drive plate 8 and the sliding plate 6 is ensured, thereby effectively avoiding noise caused by their impact. When using this invention, firstly by binding... The strap 16 securely fixes the back of the hand support 3 and the palm support 4 to the patient's hand. Then, the motor 7 is started, driving the output shaft 9 to move the push plate 20, which in turn pushes the connecting plate 21. The movement of the connecting plate 21 will cause the connecting shaft 15 to rotate. At this time, the strap 16 will wrap around the connecting shaft 15, thereby tightening the strap 16. When the strap 16 is tightened to a suitable degree, the locking mechanism locks the rotating shaft 17 to ensure its stability. This design allows the strap 16 to adapt to different users' arm sizes, achieve personalized adjustment, and ensure comfort and stability during use.

[0046] This invention, through meticulous design, achieves precise engagement between the pawl 24 and the gear 18, thereby ensuring unidirectional rotation of the shaft 17 in a specific direction. This design ensures that the shaft 17 automatically locks after the strap 16 is tightened, preventing accidental loosening. When it is necessary to release the strap 16, the user only needs to pull the connecting line 22. This operation will drive the moving block 23 to move the pawl 24 away from the locked position of the gear 18, thereby releasing the locking state of the gear 18. Subsequently, the operable motor can rotate the output shaft 9 in the opposite direction. Through the synergistic action of the push plate 20 pushing the connecting plate 21, the connecting shaft 15 will rotate accordingly. The movement ultimately allows the strap 16 to be smoothly released from the connecting shaft 15. The entire operation process is rigorous and stable, ensuring the safety and reliability of the device. Inside the hollow block 5, when the gas is pushed by the slide plate 6, the gas will naturally flow into the air outlet 10. As the slide plate 6 moves, the gas pressure inside the hollow block 5 gradually increases, eventually causing all the massage balls 26 to detach from the air outlet 10 simultaneously. At this time, the gas will be blown out evenly through the air outlet 10, significantly improving the air cooling effect on the hand. At the same time, the massage balls 26 impact the hand under the pressure, realizing the massage function of the hand, thereby enhancing the user's comfort.

[0047] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0048] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthosis for treating distal radioulnar joint instability, comprising an upper arm support (1), a forearm support (2), a back of the hand support (3), and a palm support (4); characterized in that: The upper arm support (1) and the forearm support (2) are provided with a rotatable bracket connection. The forearm support (2) is connected to the palm support (4) through an adjustment mechanism. The palm support (4) and the back of the hand support (3) are provided with straps (16). A hollow block (5) is fixedly connected to the side wall of the backrest (3). Multiple sets of air vents (10) are opened between the bottom surface of the hollow block (5) and the backrest (3). A sliding plate (6) is sealed and slidably connected to the inner wall of the hollow block (5). A set of first springs is fixedly connected between the bottom surface of the sliding plate (6) and the inner wall of the hollow block (5). The inner wall of the hollow block (5) is fixedly connected to a motor (7) located above the slide plate (6). An output shaft (9) is rotatably connected to one side of the motor (7), and a drive plate (8) for pushing the slide plate (6) is fixedly connected to the output shaft (9).

2. The orthotic device for treating distal radioulnar joint instability according to claim 1, characterized in that: An elastic sleeve (12) is fixedly connected to the top surface of the skateboard (6). A connecting pipe (13) is connected inside the elastic sleeve (12). The other end of the connecting pipe (13) is connected to a hollow fixing block (14). The fixing block (14) is fixedly installed on the upper arm support (1). An air vent groove is provided between the fixing block (14) and the upper arm support (1).

3. The orthotic device for treating distal radioulnar joint instability according to claim 2, characterized in that: The inner wall top surface of the elastic sleeve (12) is fixedly connected to a magnetic plate (11), and the driving plate (8) is made of a magnetic material that repels the magnetic plate (11).

4. The orthotic device for treating distal radioulnar joint instability according to claim 1, characterized in that: The hollow block (5) has a cavity (19) inside, and a rotating shaft (17) is rotatably connected inside the cavity (19). A connecting shaft (15) is fixedly connected to the side of the rotating shaft (17) near the motor (7). A connecting plate (21) is fixedly connected to the side of the connecting shaft (15) near the motor (7). A push plate (20) for pushing the connecting plate (21) is fixedly connected to the output shaft (9). One end of the strap (16) is fixedly connected to the connecting shaft (15). The surface of the strap (16) is slidably connected to the top surface of the hollow block (5). A locking mechanism for locking the rotating shaft (17) is provided inside the cavity (19).

5. The orthotic device for treating distal radioulnar joint instability according to claim 4, characterized in that: The locking mechanism includes a gear (18) fixed on a rotating shaft (17), a movable block (23) slidably connected to the inner wall of the cavity (19), a pawl (24) meshing with the gear (18) on the movable block (23), a rectangular plate (25) fixedly connected to the side of the cavity (19) near the movable block (23), a second spring fixedly connected between the rectangular plate (25) and the movable block (23), a connecting line (22) fixedly connected to the side wall of the movable block (23), and the other end of the connecting line (22) extending to the outside of the hollow block (5).

6. The orthotic device for treating distal radioulnar joint instability according to claim 1, characterized in that: A massage ball (26) is provided inside the air outlet (10) and fits against its inner wall. An elastic line is fixedly connected between the side wall of the massage ball (26) and the inner wall of the air outlet (10).

7. The orthotic device for treating distal radioulnar joint instability according to claim 1, characterized in that: The adjustment mechanism includes a connecting frame (27) and an adjusting frame (28). The connecting frame (27) is fixedly connected to the forearm support (2), and the adjusting frame (28) is fixedly connected to the palm support (4). The adjusting frame (28) is slidably connected to the inner wall of the connecting frame (27). An air inlet is provided on the connecting frame (27), and a sealing post (30) is snapped into the air inlet.

8. An orthosis for treating distal radioulnar joint instability according to claim 7, characterized in that: A round rod (29) is fixedly connected to the top surface of the inner wall of the connecting frame (27), and a clamping plate (32) is fixedly connected to the bottom surface of the round rod (29). A hollow groove is provided inside the sealing column (30), and a through groove (31) communicating with the hollow groove is provided on the top surface of the sealing column (30). The shape of the through groove (31) is the same as that of the clamping plate (32). A third spring is provided between the top surface of the sealing column (30) and the inner wall of the adjusting frame (28). A set of connecting grooves is provided on the side wall of the sealing column (30).

9. An orthosis for treating distal radioulnar joint instability according to claim 8, characterized in that: The bottom surface of the connecting frame (27) is connected by a torsion spring to a protective shell (33) that is sleeved on the sealing column (30).

Images