Wrist stabilizer for rehabilitation

Abstract

The wrist stabilizer for rehabilitation comprises a wearing sleeve, and the wearing sleeve is sleeved backwards from the front portion of a palm to the rear portion of a wrist; the front end of the wearing sleeve is provided with finger holes corresponding to five fingers; the front end of the wearing sleeve is sleeved to the root of a finger, so that most of the finger is exposed; a plurality of guide blocks are respectively arranged on one side, corresponding to the hand back, of the wearing sleeve along the palm back, the wrist and the back of the wrist; a posture fixing chain sequentially penetrates through the guide blocks; the posture fixing chain is sleeved with an elastic outer sleeve. The posture fixing chain comprises a plurality of chain block single bodies which are sequentially opposite end to end and a pull wire which slides and penetrates through the centers of the chain block single bodies in the axial direction at the same time. Through the simple and light structural design, flexible adjustment and stable fixation of the wrist posture are successfully achieved, and it is ensured that a user can obtain the best supporting and protecting effect in the rehabilitation and daily use process.

Description

Technical Field

[0001] The invention belongs to the field of medical equipment, in particular to a wrist stabilizer for rehabilitation. Background Art

[0002] In the field of rehabilitation medicine, wrist injuries are common and usually require the use of stabilizers to assist rehabilitation treatment. Most existing wrist stabilizers support and protect the wrist through fixed brackets and elastic bands to limit excessive wrist movement and posture deviation. However, these traditional designs have the following problems: Complex structure and heavy weight: Traditional wrist stabilizers mostly use metal brackets or heavy materials to ensure their support, which not only increases the overall weight of the device, but also makes the wearing and adjustment process cumbersome, causing inconvenience to users in daily use.

[0003] The overly complicated structure requires users to spend more time and energy when wearing and adjusting the posture, which makes the operation process difficult, especially for users who lack flexibility or suffer from wrist pain.

[0004] The adjustment is not flexible and cannot meet individual needs: Some existing stabilizers are adjusted through fixed angles or elastic bands, but they often only provide a limited adjustment range and cannot flexibly meet the needs of different users for wrist posture during the rehabilitation process.

[0005] Furthermore, these devices usually require repeated disassembly or re-fixation when adjusted and lack a quick and easy adjustment mechanism, which is extremely inconvenient in daily use or rehabilitation training.

[0006] Uncomfortable wearing affects daily life: Many stabilizers are not designed with user comfort in mind. Rigid structures or tight wrapping can create a sense of oppression on the wrists and arms, making users feel uncomfortable when wearing them for long periods of time.

[0007] Due to the lack of adaptive structure of existing products, users may be restricted in their movements when wearing these devices, making it difficult for them to perform basic operations in daily life, such as typing and picking up objects, which limits their actual usage scenarios. Summary of the invention

[0008] The purpose of the present invention is to provide a wrist stabilizer for rehabilitation. The present invention not only ensures the comfort of wearing and the stability of wrist posture through a lightweight and flexible design, but also provides a convenient adjustment mechanism, so that users can easily adjust the posture and support force according to rehabilitation needs and daily life needs. This design aims to make up for the shortcomings of the existing technology and provide users with a more efficient and comfortable rehabilitation experience.

[0009] The technical solution adopted by the present invention is as follows: A wrist stabilizer for rehabilitation comprises a wearing sleeve, which is put on from the front of the palm to the back of the wrist; the front end of the wearing sleeve is provided with finger holes corresponding to five fingers; the front end of the wearing sleeve is put on the base of the fingers so that most of the fingers are exposed; a plurality of guide blocks are respectively arranged along the back of the palm and the wrist to the back of the wrist on one side of the wearing sleeve corresponding to the back of the hand; a posture fixing chain passes through each guide block in sequence; an elastic jacket is arranged on the outer surface of the posture fixing chain; the posture fixing chain comprises a plurality of chain block monomers which are opposite to each other in sequence and a pull wire which slides through the center of each chain block monomer in the axial direction at the same time; one end of the pull wire is fixed to a chain block located at the outermost end On the block monomer, the other end passes through each chain block monomer in turn and is fixed to an adjusting block. The adjusting block is threadedly matched with the guide block located at the other outermost end. The adjusting block is rotated to adjust the tightness of the contact of each chain block monomer by pulling the wire to fix or loosen the relative posture between each chain block monomer; a curved convex part is arranged at one end of the chain block monomer, and a curved concave part is arranged at the other end, and the curved convex part and the curved concave part are in contact and matched between adjacent chain block monomers; polygonal pyramidal protrusions are evenly arranged on the curved convex part and the curved concave part respectively; when the curved convex part and the curved concave part are in contact and pre-tightened, the polygonal pyramidal protrusions of the two are engaged with each other to fix the relative posture of the two.

[0010] Among them, the arc surface convex part is located in the middle of one end of the chain block monomer, and the diameter of the arc surface convex part is smaller than the width and height of the chain block monomer; the arc surface concave part is located in the middle of the other end of the chain block monomer, and the diameter of the arc surface concave part is larger than the diameter of the arc surface convex part.

[0011] Among them, an air cushion layer is arranged on the inner surface of the wearing sleeve; the air cushion layer is connected to a pressing air bag through an air inlet pipe, and air is inflated into the air cushion layer by pressing the pressing air bag; the air inlet pipe is provided with a first one-way air valve for one-way air intake toward the air cushion layer; the pressing air bag is provided with a second one-way air valve for one-way air intake toward the pressing air bag; and the air cushion layer is provided with an openable and closable exhaust port.

[0012] Wherein, the wearing cover is integrally formed of elastic material.

[0013] Among them, the wearing set includes a palm part, a wrist part and an arm part; the palm part and the arm part are made of rigid plastic; the wrist part includes a plurality of rigid ring monomers; the two ends of the rigid ring monomers are spirally bent into mutually hooking parts; two adjacent rigid ring monomers are hooked with each other through the mutually hooking parts and can rotate relatively.

[0014] Wherein, at least one guide block is arranged on the wrist.

[0015] Wherein, the front end of the arc surface convex part is an elastic layer; the polygonal pyramid protrusion of the arc surface convex part is fixed on the elastic layer.

[0016] Wherein, permanent magnets are respectively embedded in the arc surface convex part and the arc surface concave part, and the opposite surfaces of the arc surface convex part and the arc surface concave part are of the same polarity and repel each other.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Simple and lightweight structure design: The wearing cover 1 made of high-elasticity TPU material and the chain block monomer 42 made of lightweight engineering plastic ensure that the weight of the entire device is extremely light, so that the user can wear it for a long time without feeling burdened.

[0018] The design structure of the posture fixing chain is simple, and the smooth guidance of the guide block ensures that the chain will not get stuck during adjustment. The entire adjustment process is simple and easy, and users can quickly complete the posture adjustment.

[0019] 2. Flexible adjustment function: By rotating the adjustment block to tighten or loosen the cable, the user can easily adjust the tightness between the chain block monomers to achieve flexible adjustment of the wrist posture. This adjustment design is simple and efficient, and the user can adjust the wrist posture at any time in different situations.

[0020] The multi-faceted pyramidal protrusions between the convex and concave parts of the arc surface provide a stable locking effect when the cable is tightened; and when the cable is loosened, the repulsive force of the permanent magnet ensures that the chain block monomers are free to separate, so that users do not need complicated operations when adjusting, which is flexible and convenient.

[0021] 3. The stabilizing effect of wrist posture: Through the precise design and snap-fit ​​structure of the chain block monomer, the present invention can firmly fix the user's wrist in a set position to ensure a stable posture. This stabilization effect is crucial to the rehabilitation process, helping the user maintain a correct posture and preventing excessive wrist bending.

[0022] The fitting support provided by the air cushion layer further enhances stability, allowing users to obtain sufficient support and enjoy comfort during use.

[0023] In summary, the present invention successfully achieves flexible adjustment and stable fixation of the wrist posture through its simple and lightweight structural design, ensuring that users can obtain optimal support and protection effects during rehabilitation and daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a wrist bent forward in the first embodiment of the present invention; Figure 2 It is a schematic diagram of the wrist being bent backward in the first embodiment of the present invention; Figure 3It is a partial cross-sectional schematic diagram of the posture fixing chain of the present invention; Figure 4 It is a schematic diagram of the cooperation between the adjustment block and the guide block of the present invention; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 6 It is a cross-sectional schematic diagram of the wrist in the second embodiment of the present invention.

[0025] Markings in the figure: 1. wearing set; 11. palm; 12. wrist; 121. rigid ring monomer; 122. hooking part; 13. arm; 2. air cushion layer; 21. air inlet pipe; 22. pressing airbag; 23. first one-way air valve; 24. second one-way air valve; 3. guide block; 4. posture fixing chain; 41. elastic jacket; 42. chain block monomer; 421. arc surface convex part; 422. arc surface concave part; 423. polygonal pyramid convex part; 424. elastic layer; 43. pull line; 44. adjustment block. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Example 1: See Figures 1 to 4 The present invention relates to a wrist stabilizer for rehabilitation, including a wearing sleeve 1, which is put from the front of the palm to the back of the wrist; finger holes are opened at the front end of the wearing sleeve 1 corresponding to the five fingers; the front end of the wearing sleeve 1 is put to the base of the fingers so that most of the fingers are exposed; the specific wearing sleeve 1 is integrally formed of a high-elastic TPU (thermoplastic polyurethane) material, which has high strength, wear resistance and good elasticity to ensure that the user can obtain sufficient support when using it without causing pressure on the skin.

[0028] A plurality of guide blocks 3 are respectively arranged on the side of the wearable sleeve 1 corresponding to the back of the hand, along the back of the palm, and from the wrist to the back of the wrist; the guide blocks 3 are made of light metal (such as aluminum alloy) and have high strength and corrosion resistance. Each guide block is fixed to the wearable sleeve 1 by screws and arranged according to the shape of the wrist and palm to ensure that the posture fixing chain 4 will not get stuck when sliding at different angles.

[0029] A posture fixing chain 4 passes through each guide block 3 in sequence; an elastic jacket 41 is provided on the outer cover of the posture fixing chain 4; the posture fixing chain 4 includes a plurality of chain block monomers 42 which are opposite to each other in sequence and a pull wire 43 which slides axially through the center of each chain block monomer 42 at the same time; these chain block monomers are injection molded by engineering plastics, which are light and wear-resistant. The size of each chain block monomer is precisely calculated to ensure that the chain block monomer 42 can form a stable posture fixing effect when in contact. The jacket is made of silicone material, which has good softness, ensuring that the chain will not directly contact the skin during use and cause discomfort, while limiting the relative position of each chain block monomer 42 in the posture fixing chain 4 to avoid excessive misalignment and inability to engage in a fixed posture.

[0030] One end of the pull wire 43 is fixed on a chain block monomer 42 located at the outermost end, and the other end passes through each chain block monomer 42 in turn and is fixed to an adjustment block 44. The pull wire is made of high-strength steel wire rope and can withstand high tension. The adjustment block 44 is threadedly matched with the guide block 3 located at the other outermost end. The adjustment block 44 is rotated to adjust the tightness of the contact of each chain block monomer 42 through the pull wire 43 to fix or loosen the relative posture between each chain block monomer 42; a curved convex portion 421 is set at one end of the chain block monomer 42, and a curved concave portion 422 is set at the other end. The curved convex portion 421 and the curved concave portion 422 are in contact and matched between adjacent chain block monomers 42; the curved convex portion 421 and the curved concave portion 422 are evenly provided with polygonal pyramidal protrusions 423 respectively; when the curved convex portion 421 and the curved concave portion 422 are in contact and pre-tightened, the polygonal pyramidal protrusions 423 of the two are engaged with each other to fix the relative posture of the two.

[0031] The arc surface convex part 421 is located in the middle of one end of the chain block monomer 42, and the diameter of the arc surface convex part 421 is smaller than the width and height of the chain block monomer 42; the arc surface concave part 422 is located in the middle of the other end of the chain block monomer 42, and the diameter of the arc surface concave part 422 is larger than the diameter of the arc surface convex part 421, so that the adjacent two chain block monomers 42 can have a good effect of engaging and fixing the posture when they rotate relative to each other, and at the same time, it can avoid interference and obstruction at the periphery of the ends of the adjacent chain block monomers 42. The front end of the arc surface convex part 421 is an elastic layer 424; the polygonal pyramid protrusion 423 of the arc surface convex part 421 is fixed on the elastic layer 424. The elastic layer 424 is a flexible rubber material, and its ability to self-adaptively deform under extrusion is used to make the arc surface convex part 421 and the polygonal pyramid protrusion 423 of the arc surface concave part 422 more self-adaptively engage, thereby improving the posture fixing effect and stability.

[0032] NdFeB permanent magnets are embedded in the curved convex part 421 and the curved concave part 422, respectively, and the opposite surfaces of the curved convex part 421 and the curved concave part 422 are of the same polarity and repel each other. The magnetism of the permanent magnet does not need to be very strong, and it is only necessary to ensure that the adjacent curved convex parts 421 and the curved concave parts 422 are separated from each other and do not contact each other in a static state; in this way, when the pull wire 43 is loosened, the adjacent curved convex parts 421 and the curved concave parts 422 are separated from each other and do not engage, so that the wrist wearing angle can be freely adjusted, and after the wrist angle is adjusted to the right position, the pull wire 43 is tightened again, so that the adjacent curved convex parts 421 and the curved concave parts 422 overcome the repulsive force of the permanent magnet and engage, thereby fixing the wrist bending angle and posture.

[0033] An air cushion layer 2 is provided on the inner surface of the wearing sleeve 1; the air cushion layer is made of flexible silicone material and can be precisely fitted according to the curve of the wrist. The first one-way air valve 23 provided on the air inlet pipe 21 is a low-pressure check valve, which can ensure that the gas enters the air cushion layer 2 in one direction to avoid backflow. The second one-way air valve 24 of the pressing airbag 22 ensures that the gas can smoothly enter the air inlet pipe 21 when pressed. A manual exhaust port is also provided on the air cushion layer 2, and the exhaust port adopts a rotating opening and closing design to facilitate the adjustment of the air pressure.

[0034] The method for a user to use the rehabilitation wrist stabilizer of the present invention is as follows: 1. Wearing the wearable cover 1: The user puts on the wearable sleeve 1 from the front of the palm, and then puts it on the back of the wrist, ensuring that the palm and wrist are covered.

[0035] Five fingers are passed through the finger holes at the front end of the wearing sleeve 1 in sequence, and the finger holes of the wearing sleeve are adjusted to be fixed at the base of the fingers so that most of the fingers are exposed to maintain the freedom of movement of the fingers.

[0036] 2. Adjust the pressure of air cushion layer 2: The user presses the airbag 22 to inflate the air cushion layer 2 according to the comfort of the wrist. When pressed, the gas enters the air cushion layer 2 through the air inlet pipe 21. The first one-way air valve 23 on the air inlet pipe 21 ensures that the gas can only enter in one direction to avoid backflow.

[0037] When the air pressure in the air cushion layer 2 reaches a comfortable and stable state, the user stops pressing. Through the cushioning effect of the air cushion layer 2, the user's palms, wrists and arms can feel appropriate support and comfort.

[0038] If it is necessary to release the gas or adjust the air pressure, the exhaust port on the air cushion layer 2 can be opened manually, and the air pressure in the air cushion layer can be adjusted by rotating the opening and closing design to achieve a suitable supporting state.

[0039] 3. Adjust the tightness of the posture fixing chain 4: The user first bends the wrist to a desired posture, and then rotates the adjustment block 44 to adjust the tension of the pull wire 43, thereby adjusting the relative posture between the chain block monomers 42. When the adjustment block 44 is rotated, the pull wire 43 tightens or loosens the chain block monomers 42 through the guide block 3.

[0040] When the pull wire 43 is tightened, the arc-surface convex parts 421 and the concave parts 422 between the chain block monomers 42 approach each other and are engaged with each other through the multi-faceted pyramid protrusions 423, thereby fixing the angle and posture of the wrist.

[0041] If the wrist angle needs to be adjusted, the user can rotate the adjustment block 44 counterclockwise, loosen the pull wire 43, and use the repulsive force of the permanent magnets in the curved convex portion 421 and the concave portion 422 to separate the adjacent chain block monomers 42, thereby allowing the wrist angle to be freely adjusted.

[0042] After the user adjusts the wrist to a suitable angle according to rehabilitation needs, the user rotates the adjustment block 44 clockwise again and tightens the pull wire 43, so that the arc convex portion 421 and the concave portion 422 between the chain block monomers 42 overcome the repulsive force of the permanent magnet and fit tightly together to fix the bending angle and posture of the wrist.

[0043] In the present invention, the supporting and cushioning principles of the wearing set 1 are as follows: The wearable cover 1 is made of high-elastic TPU material, which has high strength, wear resistance and good elasticity, and can provide sufficient support without causing pressure on the skin. After the air cushion layer 2 is filled with gas, it will fit precisely according to the curve of the wrist to form a stable buffer zone. This buffer zone not only disperses the external pressure, but also provides a certain support force, enhancing the comfort and support of the wearable cover.

[0044] The structure and engagement principle of the guide block 3 and the posture fixing chain 4: The guide block 3 is made of lightweight aluminum alloy and is arranged along the back of the palm and the wrist to guide and fix the posture fixing chain 4 to ensure that the chain slides smoothly without jamming during use.

[0045] The posture fixing chain 4 is composed of a plurality of chain block monomers 42, which are connected to each other through arc-surface protrusions 421 and recesses 422. The polygonal pyramid protrusions 423 between the chain blocks are engaged to fix the posture when the pull wire 43 is tightened. When the pull wire 43 is loosened, the chain block monomers are separated due to the same-sex repulsion of the permanent magnets, so that the chain blocks can move freely.

[0046] Principle of magnetic assisted separation and fixation of attitude fixing chain: The curved convex part 421 and the concave part 422 are embedded with NdFeB permanent magnets. The repulsive force generated by the permanent magnets automatically separates the adjacent chain block monomers 42 when the pull wire 43 is loosened, thereby preventing unnecessary engagement. This design ensures that the user can freely rotate the chain block monomers when adjusting the wrist angle without manual disassembly.

[0047] When the user adjusts the wrist angle and tightens the pull wire 43, the tension of the pull wire overcomes the repulsive force of the permanent magnet, so that the arc-surface convex part 421 and the polygonal pyramid protrusion 423 of the concave part 422 are tightly engaged, thereby stabilizing the wrist posture.

[0048] The protective and limiting effects of the elastic jacket 41 are: The outside of the posture fixing chain 4 is wrapped with an elastic jacket 41 made of silicone, which not only protects the chain from direct contact with the skin to avoid wear and discomfort, but also limits the relative position of the chain block monomers 42 through the soft material to prevent them from being misplaced or disengaged during the adjustment process.

[0049] Principle of regulating the pressure control of air cushion layer 2: The pressure in the air cushion layer 2 is controlled by pressing the air bag 22, and when pressed, the gas is delivered to the air cushion layer 2 through the air inlet pipe 21. The first one-way air valve 23 ensures that the gas can only enter the air cushion layer in one direction to prevent gas backflow. The air pressure in the air cushion layer 2 is adjusted by rotating the exhaust port to ensure that the user can freely control the strength of the wrist support at different stages of rehabilitation. Example

[0050] See also Figure 5 and 6 The difference between this embodiment and the first embodiment is that the wearing set 1 includes a palm portion 11, a wrist portion 12 and an arm portion 13; the palm portion 11 and the arm portion 13 are made of rigid plastic to ensure sufficient support and stability while maintaining lightness. The rigid structure of these parts helps to stabilize the wrist and arm, prevent excessive bending or incorrect posture, and provide free space for the movement of the fingers. The palm portion 11 is provided with finger holes, and sufficient space is left for the fingers to be exposed, so as to facilitate the user's activities.

[0051] The wrist portion 12 includes a plurality of rigid ring monomers 121; these monomers are made of aluminum alloy and are bent to form spiral interlocking portions 122. Adjacent ring monomers are connected to each other through the interlocking portions 122 and can rotate relatively freely to a certain extent to adapt to different wrist postures. This design allows the wrist portion 12 to be fine-tuned according to the user's wrist posture, ensuring that the wrist can move within a certain range during wearing. However, when the range is exceeded, the support force provided by the rigid ring monomers 121 limits excessive rotation or bending of the wrist, thereby protecting the wrist from injury.

[0052] At least one guide block 3 is provided on the wrist 12. At least one guide block 3 is provided on the wrist 12 to guide the posture fixing chain 4. The function of this guide block is to ensure that the chain can slide stably along the wrist area, so as to keep the chain running smoothly without jamming when adjusting the chain block monomer 42.

[0053] Through this guiding design, the posture fixing chain 4 can accurately adjust the bending and support angle of the wrist, so that the user can achieve wrist posture fixing and support adjustment by adjusting the tightness of the chain.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wrist stabilizer for rehabilitation, characterized in that: The invention comprises a wearing sleeve (1), wherein the wearing sleeve (1) is worn from the front of the palm to the back of the wrist; the front end of the wearing sleeve (1) is provided with finger holes corresponding to five fingers; the front end of the wearing sleeve (1) is worn to the base of the fingers so that most of the fingers are exposed; a plurality of guide blocks (3) are respectively arranged on one side of the wearing sleeve (1) corresponding to the back of the hand along the back of the palm, the wrist and the back of the wrist; a posture fixing chain (4) passes through each guide block (3) in sequence; the outer cover of the posture fixing chain (4) is provided with an elastic outer cover (41); the posture fixing chain (4) comprises a plurality of chain block monomers (42) which are opposite to each other in sequence and a pull wire (43) which slides through the center of each chain block monomer (42) in the axial direction at the same time; one end of the pull wire (43) is fixed to a chain block monomer (42) located at the outermost end, and the other end passes through each chain block monomer (42) in sequence. The chain block (42) is fixed to an adjustment block (44), the adjustment block (44) being threadedly matched with the guide block (3) located at the other outermost end, and the adjustment block (44) is rotated to adjust the tightness of the contact between the chain block monomers (42) through the pull wire (43) to fix or loosen the relative posture between the chain block monomers (42); a curved surface convex portion (421) is provided at one end of the chain block monomer (42), and a curved surface concave portion (422) is provided at the other end, and the curved surface convex portion (421) and the curved surface concave portion (422) are in contact and matched between adjacent chain block monomers (42); the curved surface convex portion (421) and the curved surface concave portion (422) are respectively and evenly provided with multi-faceted pyramidal protrusions (423); when the curved surface convex portion (421) and the curved surface concave portion (422) are in contact and pre-tightened, the multi-faceted pyramidal protrusions (423) of the two are mutually engaged to fix the relative posture of the two.

2. The wrist stabilizer for rehabilitation according to claim 1, characterized in that: The arc surface convex part (421) is located in the middle of one end of the chain block monomer (42), and the diameter of the arc surface convex part (421) is smaller than the width and height of the chain block monomer (42); the arc surface concave part (422) is located in the middle of the other end of the chain block monomer (42), and the diameter of the arc surface concave part (422) is larger than the diameter of the arc surface convex part (421).

3. The wrist stabilizer for rehabilitation according to claim 1, characterized in that: An air cushion layer (2) is provided on the inner surface of the wearable cover (1); the air cushion layer (2) is connected to a pressing air bag (22) via an air inlet pipe (21), and air is inflated into the air cushion layer (2) by pressing the pressing air bag (22); a first one-way air valve (23) for one-way air intake into the air cushion layer (2) is provided on the air inlet pipe (21); a second one-way air valve (24) for one-way air intake into the pressing air bag (22) is provided on the pressing air bag (22); and an openable and closable exhaust port is provided on the air cushion layer (2).

4. The wrist stabilizer for rehabilitation according to claim 3, characterized in that: The wearing cover (1) is integrally formed of elastic material.

5. The wrist stabilizer for rehabilitation according to claim 3, characterized in that: The wearable cover (1) comprises a palm portion (11), a wrist portion (12) and an arm portion (13); the palm portion (11) and the arm portion (13) are made of rigid plastic; the wrist portion (12) comprises a plurality of rigid ring monomers (121); both ends of the rigid ring monomers (121) are spirally bent to form interlocking portions (122); and two adjacent rigid ring monomers (121) are interlocked through the interlocking portions (122) and can rotate relative to each other.

6. The wrist stabilizer for rehabilitation according to claim 5, characterized in that: At least one guide block (3) is arranged on the wrist (12).

7. The wrist stabilizer for rehabilitation according to claim 1, characterized in that: The front end of the arc-surface convex portion (421) is an elastic layer (424); the polygonal pyramid protrusion (423) of the arc-surface convex portion (421) is fixed on the elastic layer (424).

8. The wrist stabilizer for rehabilitation according to claim 7, characterized in that: Permanent magnets are respectively embedded in the arc surface convex portion (421) and the arc surface concave portion (422), and the opposite surfaces of the arc surface convex portion (421) and the arc surface concave portion (422) are of the same polarity and repel each other.

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