Forearm stabilizer for upper limb movement dysfunction rehabilitation patient

Abstract

The invention relates to the technical field of medical instruments, in particular to a forearm stabilizer for upper limb movement dysfunction rehabilitation patients, which comprises two forearm arc-shaped protective plates, the two forearm arc-shaped protective plates are rotationally connected with each other, and elastic limiting mechanisms are arranged on the opposite surfaces of the two forearm arc-shaped protective plates. The elastic limiting mechanisms make contact with the forearms of the rehabilitation patient, the forearm arc-shaped protection plates are limited, massage mechanisms are arranged on the opposite faces of the two forearm arc-shaped protection plates, and the forearms of the rehabilitation patient are massaged through the massage mechanisms; an upper limb movement dysfunction rehabilitation patient drives a forearm arc-shaped protection plate to move during forearm rehabilitation training, a T-shaped bent rod moves along an arc-shaped air storage pipe through movement of the forearm arc-shaped protection plate, a massage mechanism moves up and down to massage the forearm of the rehabilitation patient, and the situation that the forearm is damaged due to the fact that the forearm bears pressure for a long time is prevented. As a result, local muscular tissue is pressed, blood circulation is not smooth, and muscle fatigue, soreness and swelling and the like are caused.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a forearm stabilizer for patients undergoing rehabilitation of upper limb motor dysfunction. Background Technology

[0002] With the development of rehabilitation medicine, forearm stabilizers have become a core device for assisting rehabilitation training and preventing joint contractures in patients with upper limb movement disorders caused by stroke, spinal cord injury, and orthopedic surgery. For example, Chinese patent CN27245033U discloses a forearm stabilizer for rehabilitation patients with upper limb movement disorders, including a flexible substrate, one or more locking members arranged along the length of the flexible substrate for fixing the patient's forearm to the flexible substrate, and a limiting member provided at the bottom or side of the flexible substrate for preventing the flexible substrate from slipping off the table. The top of the flexible substrate is open and bent to form a groove for accommodating the patient's forearm.

[0003] The aforementioned patent uses a flexible substrate and locking components mounted thereon to constrain the patient's forearm within a groove on the substrate. An elastic pad and through holes are added to the inner surface of the flexible substrate to improve cushioning and breathability. However, the above solution has the following shortcomings: Rehabilitation patients often need to wear stabilizers for extended periods of time for rehabilitation training or daily activities. During this time, the forearm is subjected to pressure at the contact points between the locking components and the inner surface of the substrate for a long time, which can easily lead to local muscle tissue compression, poor blood circulation, muscle fatigue, soreness, and other conditions. This can easily aggravate muscle spasms or induce pressure sores, resulting in low comfort. Therefore, we have introduced a forearm stabilizer for rehabilitation patients with upper limb mobility impairment. Summary of the Invention

[0004] The purpose of this invention is to provide a forearm stabilizer for patients undergoing rehabilitation of upper limb motor dysfunction, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction includes two forearm arc-shaped plates, which are rotatably connected to each other. Each of the two forearm arc-shaped plates has an elastic limiting mechanism on its opposite surface. The elastic limiting mechanism contacts the forearm of the rehabilitation patient, limiting the forearm arc-shaped plates. Each of the two forearm arc-shaped plates has a massage mechanism on its opposite surface, which massages the forearm of the rehabilitation patient. One end of the massage mechanism is fixedly connected to a connecting tube, which is fixedly connected to the outside of the forearm arc-shaped plate. A T-shaped bending rod is fixedly connected to the outer side of the forearm arc-shaped guard plate. The end of the T-shaped bending rod away from the forearm arc-shaped guard plate is movably connected to the arc-shaped air storage tube. The arc-shaped air storage tube is fixedly connected to the outer side of the upper arm arc-shaped guard plate. The lower end of the arc-shaped air storage tube is fixedly connected to a hose. The end of the hose away from the arc-shaped air storage tube is fixedly connected to a connecting pipe. An adjustment mechanism is provided inside the arc-shaped air storage tube.

[0006] Preferably, the elastic limiting mechanism includes a plurality of arc-shaped airbags, which are connected by a first air guide tube. The arc-shaped airbags and the first air guide tube are fixedly connected to the inner side of the arc-shaped forearm guard plate.

[0007] Preferably, a clearance box is fixedly connected to the outer side of the forearm arc-shaped guard plate. One end of the first air duct passes through the forearm arc-shaped guard plate and is fixedly connected to the clearance box. A baffle is slidably connected inside the clearance box. A first T-shaped rod is fixedly connected to one side of the baffle. The end of the first T-shaped rod away from the baffle extends into the external environment. A first spring is sleeved on the outer side of the first T-shaped rod. One end of the first spring is fixedly connected to the baffle, and the other end is fixedly connected to the inner side of the clearance box.

[0008] Preferably, the massage mechanism includes several arc-shaped tubes, which are fixedly connected to the inner side of the arc-shaped forearm guard plate. A second air guide tube is fixedly connected to the outer side of the arc-shaped tube. The end of the second air guide tube away from the arc-shaped tube passes through the arc-shaped forearm guard plate and is fixedly connected to a connecting tube. Several T-shaped sliding cavities are opened inside the arc-shaped tubes. T-shaped massage rods are slidably connected in the T-shaped sliding cavities. The upper end of the T-shaped massage rods extends into the external environment and is fixedly connected to an elastic massage head.

[0009] Preferably, the adjusting mechanism includes a pulley, with sealing rings fixedly connected to both ends of the pulley. The pulley and the sealing rings are movably connected to a connecting cavity, which is located inside an arc-shaped gas storage tube. The connecting cavity is connected to the inner side of the arc-shaped gas storage tube through a gas guide hole, which is located inside the arc-shaped gas storage tube. The pulley has several mating holes of different diameters, and the pulley has several trapezoidal grooves on its outer side.

[0010] Preferably, a U-shaped plate is fixedly connected to the outside of the arc-shaped gas storage pipe, and a second T-shaped rod is movably connected inside the U-shaped plate. One end of the second T-shaped rod extends into the connecting cavity and is fixedly connected to a trapezoidal block. The trapezoidal block is engaged in the trapezoidal groove. A second spring is sleeved on the outside of the second T-shaped rod. One end of the second spring is fixedly connected to the trapezoidal block, and the other end is fixedly connected to the U-shaped plate.

[0011] Preferably, the outer sides of the forearm arc-shaped guard plate and the upper arm arc-shaped guard plate are respectively fixedly connected with Velcro blocks and Velcro straps, and the inner side of the upper arm arc-shaped guard plate is fixedly connected with several elastic blocks.

[0012] Compared with the prior art, the beneficial effects of the present invention are: when patients with upper limb motor dysfunction undergo forearm rehabilitation training, the forearm arc-shaped guard plate is moved. The movement of the forearm arc-shaped guard plate causes the T-shaped bending rod to move along the arc-shaped air storage tube, which in turn causes the massage mechanism to move up and down to massage the patient's forearm. This prevents the forearm from being subjected to pressure for a long time, which can lead to local muscle tissue compression, poor blood circulation, and muscle fatigue, soreness, etc. Meanwhile, by adjusting the regulating mechanism, the airflow rate entering the hose or the arc-shaped air storage tube can be controlled. By controlling the gas flow rate, the movement speed of the two forearm arc-shaped guard plates can be controlled, preventing the patient's forearm from falling rapidly due to muscle weakness during the initial training, thus preventing forearm injury. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram illustrating the connection relationship between the arc-shaped guard plate and the elastic block of the upper arm according to the present invention; Figure 3 This is a three-dimensional structural diagram of the forearm arc-shaped guard plate of the present invention in its open state; Figure 4 This is a three-dimensional structural diagram of the present invention in its installed state; Figure 5 This is a three-dimensional structural diagram of the forearm arc-shaped guard plate and the arc-shaped airbag in the separated state of the present invention; Figure 6 This is a three-dimensional structural diagram illustrating the connection relationship between the T-shaped pressing rod and the T-shaped sliding cavity of the present invention; Figure 7 This is a three-dimensional structural diagram of the pulley and connecting cavity in the separated state of the present invention; Figure 8 This is a three-dimensional structural diagram illustrating the connection relationship between the arc-shaped guard plate of the boom and the arc-shaped gas storage pipe of the present invention; Figure 9 This is a three-dimensional structural diagram illustrating the connection relationship between the forearm arc-shaped guard plate and the clearance box of the present invention.

[0014] In the diagram: 1. Forearm arc-shaped guard plate; 2. Clearance box; 3. Connecting pipe; 4. Hose; 5. Sealing ring; 6. Arc-shaped air storage pipe; 7. Upper arm arc-shaped guard plate; 8. Velcro strap; 9. Elastic block; 10. T-shaped bending rod; 11. Arc-shaped airbag; 12. T-shaped massage rod; 13. Arc-shaped tube; 14. Elastic massage head; 15. Velcro block; 16. First air guide tube; 17. Baffle; 18. First spring; 19. First T-shaped rod; 20. Second air guide tube; 21. Second T-shaped rod; 22. Pulley; 23. Connecting hole; 24. Trapezoidal groove; 25. Connecting cavity; 26. Air guide hole; 27. U-shaped plate; 28. Second spring; 29. ​​Trapezoidal block; 30. T-shaped sliding cavity. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Please see Figure 1-9 The present invention provides a technical solution: Example 1:

[0017] A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction includes two forearm arc-shaped guard plates 1. Several air passages are provided on the outer side of each forearm arc-shaped guard plate 1. The two forearm arc-shaped guard plates 1 are rotatably connected to each other. Each forearm arc-shaped guard plate 1 has an elastic limiting mechanism on its opposite surface. The elastic limiting mechanism contacts the patient's forearm, limiting the forearm arc-shaped guard plate 1. Each forearm arc-shaped guard plate 1 has a massage mechanism on its opposite surface to massage the patient's forearm. One end of the massage mechanism is fixedly connected to a connecting pipe 3, which is fixedly connected to the outer side of the forearm arc-shaped guard plate 1. A T-shaped bending rod 10 is fixedly connected to the outer side of the forearm arc-shaped guard plate 1. The end of the T-shaped bending rod 10 away from the forearm arc-shaped guard plate 1 is movably connected to an arc-shaped air storage tube 6. The outer side of the T-shaped bending rod 10 is tightly fitted to the inner side of the arc-shaped air storage tube 6. The arc-shaped air storage tube 6 is fixedly connected to the outer side of the upper arm arc-shaped guard plate 7. The lower end of the arc-shaped air storage tube 6 is fixedly connected to the hose 4. When the patient's forearm moves, causing the arc-shaped forearm guard plate 1 to move, the T-shaped bending rod 10 will move along the arc-shaped air storage tube 6. The gas in the arc-shaped air storage tube 6 will enter the hose 4. The end of the hose 4 away from the arc-shaped air storage tube 6 is fixedly connected to the connecting pipe 3. An adjustment mechanism is provided in the arc-shaped air storage tube 6. By adjusting the adjustment mechanism, the gas in the arc-shaped air storage tube 6 can be prevented from entering the hose 4. Alternatively, by adjusting the adjustment mechanism, the airflow rate entering the hose 4 or the arc-shaped air storage tube 6 can be controlled. By controlling the gas flow rate, the moving speed of the two forearm arc-shaped guard plates 1 can be controlled, preventing the patient's forearm from falling rapidly due to muscle weakness during the initial training, thus preventing injury to the patient's forearm. Example 2:

[0018] Based on Example 1, in order to ensure that all of the several arc-shaped airbags 11 can contact the forearm of the rehabilitation patient, such as Figure 6 As shown, the elastic limiting mechanism includes several arc-shaped airbags 11, which are connected by a first air guide tube 16. The arc-shaped airbags 11 and the first air guide tube 16 are fixedly connected to the inner side of the forearm arc-shaped guard plate 1. During installation, the gas in the arc-shaped airbags 11 will flow back and forth. Through the expansion and contraction of the arc-shaped airbags 11, the arc-shaped airbags 11 are always in contact with the forearm of the rehabilitation patient. like Figure 5 As shown, a relief box 2 is fixedly connected to the outer side of the forearm arc-shaped guard plate 1. One end of the first air duct 16 passes through the forearm arc-shaped guard plate 1 and is fixedly connected to the relief box 2. A baffle 17 is slidably connected inside the relief box 2. The outer side of the baffle 17 is tightly fitted to the inner side of the relief box 2. A first T-shaped rod 19 is fixedly connected to one side of the baffle 17. The end of the first T-shaped rod 19 away from the baffle 17 extends into the external environment. A first spring 18 is sleeved on the outer side of the first T-shaped rod 19. One end of the first spring 18 is fixedly connected to the baffle 17, and the other end is fixedly connected to the inner side of the relief box 2. When the diameter of the forearm of the rehabilitation patient is large, causing several arc-shaped airbags 11 to be squeezed by the forearm at the same time, the excess gas cannot enter one or more arc-shaped airbags 11 for buffering. At this time, the excess gas will enter the relief box 2 through the first air guide tube 16. The baffle 17 located in the relief box 2 will be pushed by the gas to move. At this time, the first spring 18 is compressed. When the two forearm arc-shaped protective plates 1 reopen, under the elastic force of the first spring 18, the baffle 17 pushes the gas back into several arc-shaped airbags 11. like Figure 6As shown, the massage mechanism includes several arc-shaped tubes 13. The arc-shaped tubes 13 are fixedly connected to the inner side of the arc-shaped forearm guard plate 1. A second air guide tube 20 is fixedly connected to the outer side of the arc-shaped tubes 13. The end of the second air guide tube 20 away from the arc-shaped tubes 13 passes through the arc-shaped forearm guard plate 1 and is fixedly connected to the connecting tube 3. Several T-shaped sliding cavities 30 are opened inside the arc-shaped tubes 13. T-shaped massage rods 12 are slidably connected inside the T-shaped sliding cavities 30. The outer side of the T-shaped massage rods 12 is tightly fitted with the T-shaped sliding cavities 30. The upper end of the T-shaped massage rods 12 extends into the external environment and is fixedly connected to an elastic massage head 14. The elastic massage head 14 is an elastic airbag. Through the reciprocating swing of the rehabilitation patient, the T-shaped massage rods 12 drive the elastic massage head 14 to move up and down repeatedly, thereby achieving massage of the rehabilitation patient's forearm. like Figure 7 As shown, the adjusting mechanism includes a pulley 22, with sealing rings 5 ​​fixedly connected to both ends of the pulley 22. Both the pulley 22 and the sealing rings 5 ​​are movably connected within the connecting cavity 25, which is tightly fitted. The connecting cavity 25 is located within the arc-shaped gas storage tube 6 and communicates with the inner side of the arc-shaped gas storage tube 6 through a gas guide hole 26. The gas guide hole 26 is located within the arc-shaped gas storage tube 6. The pulley 22 has several mating holes 23 of different diameters, and several trapezoidal grooves 24 are formed on its outer side. Due to the different sizes of the mating holes 23, the gas in the arc-shaped gas storage tube 6 travels faster through the larger diameter mating holes 23 and slower through the smaller diameter mating holes 24. When the speed is slower, the setting of several docking holes 23 of different diameters allows patients with upper limb motor dysfunction to rotate the corresponding diameter docking hole 23 to the position of the air guide hole 26 during forearm swing training. This controls the moving speed of the two forearm arc guard plates 1. When the smallest diameter docking hole 23 is aligned with the air guide hole 26, the gas passes through the small diameter docking hole 23 at a slower speed, and the two forearm arc guard plates 1 move more slowly. Conversely, the movement is faster. This structure restrains the forearm of the rehabilitation patient and prevents the patient's forearm from falling rapidly due to muscle weakness during the first training session, thus preventing forearm injury. like Figure 7As shown, a U-shaped plate 27 is fixedly connected to the outside of the arc-shaped gas storage pipe 6. A second T-shaped rod 21 is movably connected inside the U-shaped plate 27. One end of the second T-shaped rod 21 extends into the connecting cavity 25 and is fixedly connected to a trapezoidal block 29. The trapezoidal block 29 is engaged in the trapezoidal groove 24. A second spring 28 is sleeved on the outside of the second T-shaped rod 21. One end of the second spring 28 is fixedly connected to the trapezoidal block 29, and the other end is fixedly connected to the U-shaped plate 27. When the pulley 22 rotates, the trapezoidal block 29 engaged in the trapezoidal groove 24 will be squeezed outward. At this time, the second spring 28 is compressed. When the other docking hole 23 rotates to the position of the air guide hole 26, the corresponding trapezoidal groove 24 will rotate to the position of the trapezoidal block 29. Under the elastic force of the second spring 28, the trapezoidal block 29 will be re-engaged in the trapezoidal groove 24, so that the pulley 22 cannot rotate. The outer sides of the forearm arc-shaped guard plate 1 and the upper arm arc-shaped guard plate 7 are respectively fixedly connected with Velcro blocks 15 and Velcro straps 8, and the inner side of the upper arm arc-shaped guard plate 7 is fixedly connected with several elastic blocks 9.

[0019] Working principle: During use, the two forearm arc-shaped guards 1 and the two upper arm arc-shaped guards 7 are installed with the forearm and upper arm of the rehabilitation patient respectively through the Velcro straps 8 and Velcro blocks 15. During the installation process, the gas in the several arc-shaped airbags 11 will flow back and forth, so that the several arc-shaped airbags 11 are always in contact with the forearm of the rehabilitation patient. When the diameter of the rehabilitation patient's forearm is large, the several arc-shaped airbags 11 are squeezed by the forearm at the same time. When the excess gas cannot enter one or more arc-shaped airbags 11 for buffering, the excess gas will enter the relief box 2 through the first air guide tube 16. The baffle 17 located in the relief box 2 will be pushed by the gas to move. At this time, the first spring 18 is compressed. When the two forearm arc-shaped guards 1 reopen, under the elastic force of the first spring 18, the baffle 17 pushes the gas back into the several arc-shaped airbags 11. When the patient's forearm needs to be fixed after the device is put on, so that the forearm cannot swing, the pulley 22 is rotated so that the position of the pulley 22 without the docking hole 23 is rotated into the position of the air guide hole 26. At this time, the pulley 22 can block the air guide hole 26, so that the gas in the arc-shaped air storage tube 6 cannot enter the hose 4. Since the gas cannot enter the hose 4, the T-shaped bending rod 10 cannot move along the arc-shaped air storage tube 6. At this time, the two immobile forearm arc-shaped guard plates 1 and the two upper arm arc-shaped guard plates 7 limit the patient's forearm and upper arm because they cannot move. When a rehabilitation patient needs to swing their forearm back and forth during rehabilitation training, the pulley 22 is rotated to align the corresponding sized docking hole 23 with the air guide hole 26. As the patient's forearm moves, causing the forearm arc-shaped guard plate 1 to move, the T-shaped bending rod 10 moves along the arc-shaped air storage tube 6. The gas inside the arc-shaped air storage tube 6 passes through the air guide hole 26 and the docking hole 23 sequentially into the hose 4. The gas then enters the connecting tube 3 through the hose 4, and finally passes through the second air guide tube 20. The gas enters the arc-shaped tube 13. At this time, the T-shaped massage rod 12 located in the T-shaped sliding cavity 30 will be pushed outward by the gas. The movement of the T-shaped massage rod 12 will drive the elastic massage head 14 to press the forearm of the rehabilitation patient. When the forearm swings downward, the T-shaped bending rod 10 will draw the gas back into the arc-shaped gas storage tube 6. The T-shaped massage rod 12 will drive the elastic massage head 14 to move downward. Through the reciprocating swing of the rehabilitation patient, the T-shaped massage rod 12 will drive the elastic massage head 14 to move up and down repeatedly, so as to massage the forearm of the rehabilitation patient. Because the sizes of the several docking holes 23 are different, the gas in the arc-shaped gas storage tube 6 moves faster when passing through the large-diameter docking hole 23 and slower when passing through the small-diameter docking hole 23. With this arrangement of several docking holes 23 of different diameters, when rehabilitation patients with upper limb motor dysfunction are performing forearm swinging training, the docking hole 23 of the corresponding diameter can be rotated to the position of the air guide hole 26 to control the moving speed of the two forearm arc-shaped guard plates 1. When the smallest diameter docking hole 23 is aligned with the air guide hole 26, the gas passes through the small-diameter docking hole 23 at a slower speed, and the two forearm arc-shaped guard plates 1 move slower. Conversely, they move faster. Through this structure, the forearm of the rehabilitation patient is restrained, preventing the patient's forearm from falling rapidly due to muscle weakness during the first training session, thus preventing forearm injury. When the pulley 22 rotates, the trapezoidal block 29, which is engaged in the trapezoidal groove 24, will be squeezed outward. At this time, the second spring 28 is compressed. When the other docking hole 23 rotates to the position of the air guide hole 26, the corresponding trapezoidal groove 24 will rotate to the position of the trapezoidal block 29. Under the elastic force of the second spring 28, the trapezoidal block 29 will re-engage in the trapezoidal groove 24, making the pulley 22 unable to rotate.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction, characterized in that: The device includes two forearm arc-shaped guards, which are rotatably connected to each other. Each of the two forearm arc-shaped guards has an elastic limiting mechanism on its opposite surface. The elastic limiting mechanism contacts the forearm of the patient undergoing rehabilitation, thereby limiting the position of the forearm arc-shaped guard. Each of the two forearm arc-shaped guards has a massage mechanism on its opposite surface, which massages the forearm of the patient undergoing rehabilitation. One end of the massage mechanism is fixedly connected to a connecting tube, which is fixedly connected to the outside of the forearm arc-shaped guard. A T-shaped bending rod is fixedly connected to the outer side of the forearm arc-shaped guard plate. The end of the T-shaped bending rod away from the forearm arc-shaped guard plate is movably connected to the arc-shaped air storage tube. The arc-shaped air storage tube is fixedly connected to the outer side of the upper arm arc-shaped guard plate. The lower end of the arc-shaped air storage tube is fixedly connected to a hose. The end of the hose away from the arc-shaped air storage tube is fixedly connected to a connecting pipe. An adjustment mechanism is provided inside the arc-shaped air storage tube.

2. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction according to claim 1, characterized in that: The elastic limiting mechanism includes several arc-shaped airbags, which are connected by a first air guide tube. The arc-shaped airbags and the first air guide tube are fixedly connected to the inner side of the arc-shaped forearm guard plate.

3. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction according to claim 2, characterized in that: A clearance box is fixedly connected to the outer side of the forearm arc-shaped guard plate. One end of the first air duct passes through the forearm arc-shaped guard plate and is fixedly connected to the clearance box. A baffle is slidably connected inside the clearance box. A first T-shaped rod is fixedly connected to one side of the baffle. The end of the first T-shaped rod away from the baffle extends into the external environment. A first spring is sleeved on the outer side of the first T-shaped rod. One end of the first spring is fixedly connected to the baffle, and the other end is fixedly connected to the inner side of the clearance box.

4. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction according to claim 1, characterized in that: The massage mechanism includes several arc-shaped tubes, which are fixedly connected to the inner side of the arc-shaped forearm guard plate. A second air guide tube is fixedly connected to the outer side of the arc-shaped tube. The end of the second air guide tube away from the arc-shaped tube passes through the arc-shaped forearm guard plate and is fixedly connected to the connecting tube. Several T-shaped sliding cavities are opened inside the arc-shaped tubes. T-shaped massage rods are slidably connected in the T-shaped sliding cavities. The upper end of the T-shaped massage rods extends into the external environment and is fixedly connected to an elastic massage head.

5. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction according to claim 1, characterized in that: The adjusting mechanism includes a pulley, with sealing rings fixedly connected to both ends of the pulley. The pulley and sealing rings are movably connected to a connecting cavity, which is located inside an arc-shaped gas storage tube. The connecting cavity is connected to the inner side of the arc-shaped gas storage tube through a gas guide hole, which is located inside the arc-shaped gas storage tube. The pulley has several mating holes of different diameters, and the pulley has several trapezoidal grooves on its outer side.

6. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction according to claim 5, characterized in that: A U-shaped plate is fixedly connected to the outside of the arc-shaped gas storage pipe. A second T-shaped rod is movably connected inside the U-shaped plate. One end of the second T-shaped rod extends into the connecting cavity and is fixedly connected to a trapezoidal block. The trapezoidal block is snapped into the trapezoidal groove. A second spring is sleeved on the outside of the second T-shaped rod. One end of the second spring is fixedly connected to the trapezoidal block, and the other end is fixedly connected to the U-shaped plate.

7. A forearm stabilizer for rehabilitation patients with upper limb motor dysfunction according to claim 1, characterized in that: The outer sides of the forearm arc-shaped guard plate and the upper arm arc-shaped guard plate are respectively fixedly connected with Velcro blocks and Velcro straps, and the inner side of the upper arm arc-shaped guard plate is fixedly connected with several elastic blocks.

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