Upper limb brace and preparation method thereof

Abstract

The invention belongs to the technical field of medical auxiliary equipment, and particularly relates to an upper limb brace and a preparation method thereof. The upper limb brace comprises a fixing band and a V-shaped supporting frame, the supporting frame is made of transparent materials, the opening angle of the supporting frame can be adjusted at will, the supporting frame is worn on the body of a patient through the fixing band and is supported between the arms and the trunk of the patient, and then the opening angle of the supporting part and the fixing part is adjusted by adjusting the length of the adjusting part. The three-dimensional scanner can better scan the hands and fingers of a patient, the situation that in the scanning process, the arms of the patient slightly move, and consequently the scanning precision and effect are affected can be avoided, meanwhile, the transparent supporting part and the transparent fixing part cannot shield the arms and the trunk of the patient, and therefore the scanning precision and effect are improved. Therefore, the three-dimensional scanner can carry out detailed and comprehensive scanning reconstruction on the neck, the shoulders and the arms of the patient so as to obtain finer and more accurate image data.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical auxiliary equipment, and in particular relates to an upper limb brace and a preparation method thereof. Background Art

[0002] Cervical spondylosis is very common in the clinical field. Cervical spondylosis refers to the degenerative changes in the cervical intervertebral disc tissue and secondary pathological changes involving the surrounding tissue structures (spinal cord, nerve roots, sympathetic nerves, vertebral arteries, etc.), resulting in corresponding clinical symptoms and signs.

[0003] Among various types of cervical spondylosis, radiculopathy has the highest incidence rate, reaching 60% to 70%. Some patients should undergo surgical treatment as soon as possible. As a common cervical spondylosis, radiculopathy is mainly caused by cervical disc herniation or bone spurs compressing the cervical nerve roots, causing patients to experience symptoms such as neck pain, upper limb numbness, and muscle weakness. This disease not only seriously affects the patient's quality of life, but also causes great trouble to their work ability and daily activities.

[0004] At present, the clinical evaluation of cervical spondylotic radiculopathy mainly relies on the patient's subjective description, physical examination and imaging examination; however, these evaluation methods have certain limitations in accuracy and objectivity, and a more precise and objective evaluation method is urgently needed.

[0005] 3D scanning technology is an emerging medical imaging technology that can accurately capture and reconstruct the three-dimensional structure of human tissue. In recent years, the application of 3D scanning technology in orthopedics, plastic surgery and other fields has made significant progress, showing high application potential.

[0006] 3D scanning technology uses invisible light and other methods to obtain the external structure data of the scanned object and generate high-resolution 3D images. These images can show subtle changes in the structure of the entire affected part, and can also provide more comprehensive and three-dimensional data than traditional evaluation methods through observations from different angles and sections. 3D scanning technology is used to perform detailed scans and reconstructions of the patient's neck, shoulders and arms, and to calibrate and measure the area of ​​the affected part, so as to obtain more detailed and accurate data; In the diagnosis and treatment of cervical spondylotic radiculopathy, doctors can develop more accurate treatment plans based on 3D scanning data, such as surgical planning, precise positioning, and postoperative evaluation, thereby improving treatment efficacy and safety.

[0007] However, when using 3D scanning technology to scan the patient's hands and fingers, the patient's arms need to be slightly raised to both sides and kept moving. Without any support, the patient's arms often move slightly, making the scanned image blurry or greatly deformed, and its accuracy and effect are difficult to guarantee. Therefore, during the scanning process, the patient's hands and fingers need to be fixed by a bracket; Many upper limb brace patents in the prior art are intended to stabilize fractures and other conditions, and have a large wrapping range, which will cover most of the patient's hand when worn, and are not suitable for the use of three-dimensional scanning technology. Therefore, inventing a brace suitable for three-dimensional scanning technology to facilitate clinical symptom assessment is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0008] On one hand, the present invention provides an upper limb brace to solve the technical problem that the upper limb brace in the prior art will cover most of the area of ​​the patient's hand when worn, resulting in the inability of a three-dimensional scanner to fully scan the patient's arm and obtain the required image data.

[0009] The present invention is achieved through the following technical solutions: An upper limb brace, comprising a support frame and a fixing belt; The support frame comprises a supporting part, a fixing part and an adjusting part; the fixing end of the supporting part and the fixing end of the fixing part are hinged to form a "V"-shaped structure, the supporting part and the fixing part are both made of transparent materials, the surfaces of the supporting part and the surfaces of the fixing part are sprayed with anti-reflection coatings, the two ends of the adjusting part are respectively hinged to the supporting part and the fixing part, and the length of the adjusting part can be adjusted according to usage requirements; The fixing belt is arranged on the fixing part, and the supporting frame is fixed on the patient through the fixing belt.

[0010] In order to better implement the present invention, further optimization is made in the above structure, wherein the support portion includes a support member and a first extension portion; The fixed end of the support member is hinged to the fixed end of the fixing portion, and one end of the adjusting portion away from the fixing portion is hinged to the movable end of the support member; The first extension portion is slidably disposed on the support member along a length direction of the support member.

[0011] In order to better realize the present invention, the above structure is further optimized, the fixed end of the first extension portion is provided with a first sleeve, the first sleeve is provided with a first sliding hole, the axis of the first sliding hole is parallel to the length direction of the support member, and the outer side wall of the first sleeve is provided with a first limiting member, and the limiting end of the first limiting member can be inserted into the first sliding hole; A first sliding block is provided at the movable end of the support member, and a plurality of first sockets matching the first limiting member are provided on the first sliding block, and the plurality of first sockets are arranged along the length direction of the support member; the first sleeve is sleeved on the first sliding block through the first sliding hole, and is locked and fixed by the cooperation of the first limiting member and the first socket.

[0012] In order to better implement the present invention, further optimization is made in the above structure, wherein the fixing portion includes a fixing piece and a second extension portion; The fixed end of the fixing member is hinged to the fixed end of the supporting portion; The second extension portion is slidably disposed on the fixing member along the length direction of the fixing member, and one end of the adjusting portion away from the supporting portion is hinged to the movable end of the second extension portion.

[0013] In order to better realize the present invention, the above structure is further optimized, the fixed end of the fixing member is provided with a second sleeve, the second sleeve is provided with a second sliding hole, the axis of the second sliding hole is parallel to the length direction of the fixing member, and the outer side wall of the second sleeve is provided with a second limiting member, and the limiting end of the second limiting member can be inserted into the second sliding hole; A second slider is provided at the movable end of the second extension portion, and a plurality of second sockets matching the second limiting member are provided on the second slider, and the plurality of second sockets are arranged along the length direction of the fixing member; the second sleeve is sleeved on the second slider through the second sliding hole, and is locked and fixed by the cooperation of the second limiting member and the second socket.

[0014] In order to better realize the present invention, further optimization is made in the above structure, and the anti-reflection coating is a silicon dioxide nano coating or a silicone resin coating.

[0015] In order to better implement the present invention, further optimization is made in the above structure, wherein the fixing belt includes a strap A, a strap B and a strap C; The strap A and the strap B are both arranged on the fixing part, the strap A is arranged close to the fixing end of the fixing part, and the strap B is arranged close to the movable end of the fixing part, and the fixing end of the strap A is detachably connected to the movable end of the strap A through a locking buckle, and the fixing end of the strap B is detachably connected to the movable end of the strap B through a locking buckle; The fixed end of the strap C is connected to the strap B, and the movable end of the strap C bypasses the strap A and is connected to the strap B.

[0016] On the other hand, the present invention also provides a method for preparing an upper limb brace, the method comprising the following steps: Material preparation: using a cutting device to cut the transparent material into plates for preparing the supporting part and the fixing part; Thermoforming: The cut plate is heated, and then cooled and formed in a mold according to the designed shape to complete the preparation of the support part and the fixing part; Grinding and polishing: Grinding the edges of the cooled and shaped support part and the fixed part to remove burrs and sharp edges; Spraying: spraying the anti-reflection coating material evenly on the surface of the support part and the fixing part to form an anti-reflection coating; during the spraying process, the distance between the nozzle of the spray gun and the support part or the fixing part is kept at 15-30 cm, and the spray gun is moved evenly; Assembly and adjustment: Assemble the support part and the fixing part, and install a fixing belt on the fixing part.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The support frame in the upper limb brace provided by the present invention is worn on the patient through a fixing belt, and the "V"-shaped support frame can be supported between the patient's arm and torso, and the angle between the support part and the fixing part can be adjusted by adjusting the length of the adjusting part, so that the three-dimensional scanner can better scan the patient's hands and fingers, and can avoid the patient's arm from slightly moving during the scanning process, which affects the scanning accuracy and effect. At the same time, the anti-reflection coating on the surface of the supporting part and the fixing part can significantly reduce the surface reflection of the supporting part and the fixing part, and reduce the interference with the scanning result, so that the supporting part and the fixing part will not block the patient's arm and torso, and will not interfere with the shaping of the patient's arm and torso, so that the three-dimensional scanner can perform detailed and comprehensive scanning and reconstruction of the patient's neck, shoulders and arms to obtain more detailed and accurate image data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an upper limb brace of the present invention; Figure 2 It is a structural schematic diagram of a support frame in an upper limb brace of the present invention.

[0020] In the figure: 1. Support frame; 11. Support part; 111. Support member; 112. First extension part; 113. First sleeve; 114. First slider; 115. Position limiting part; 12. Fixing part; 121. Fixing member; 122. Second extension part; 123. Second sleeve; 124. Second slider; 13. Adjusting part; 2. Fixing strap. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In this embodiment, if Figure 1 and Figure 2 As shown, the upper limb brace includes a support frame 1 and a fixing belt 2; wherein, The support frame 1 includes a support portion 11, a fixing portion 12 and an adjusting portion 13; the fixing end of the support portion 11 and the fixing end of the fixing portion 12 are hinged to form a "V"-shaped structure, the support portion 11 and the fixing portion 12 are both made of transparent materials, and the two ends of the adjusting portion 13 are respectively hinged to the support portion 11 and the fixing portion, and the length of the adjusting portion 13 can be adjusted according to the use requirements to change the angle between the support portion 11 and the fixing portion 12, so as to facilitate the adjustment of the lifting height of the patient's arm, so as to facilitate the scanning and reconstruction of the arm; Furthermore, the support portion 11 and the fixing portion 12 are both made of transparent materials, which will not block the patient's arms and torso, so as to improve the accuracy of the three-dimensional scanner during scanning; The fixing belt 2 is arranged on the fixing part 12, and the support frame 1 is fixed to the patient through the fixing belt 2, so that the wearing and fixing of the upper limb brace are more convenient.

[0025] The support frame 1 in the upper limb brace is worn on the patient through the fixing belt 2, and the "V"-shaped support frame 1 can be supported between the patient's arm and torso, and the angle between the support part 11 and the fixing part 12 can be adjusted by adjusting the length of the adjusting part 13, so that the three-dimensional scanner can better scan the patient's hands and fingers, and can avoid the patient's arm from moving slightly during the scanning process, which affects the scanning accuracy and effect. At the same time, the transparent support part 11 and fixing part 12 will not block the patient's arms and torso, so that the three-dimensional scanner can perform detailed and comprehensive scanning and reconstruction of the patient's neck, shoulders and arms to obtain more detailed and accurate image data.

[0026] The upper limb brace needs to be cleaned before use, especially around the scanning area, to ensure that there is no residual grease or other contaminants that may affect the optical performance on the support frame 1.

[0027] After using the upper limb brace, the upper limb brace can be cleaned regularly by using a dust-free cloth and an optical cleaner to clean the support frame 1 to avoid any stains or dust residues, so that the high transparency of the support part 11 in the upper limb brace can be maintained during use.

[0028] In addition, the triangular structure composed of the supporting part 11, the fixing part 12 and the adjusting part 13 has a good supporting effect, so as to better support the patient's arm, so that the three-dimensional scanner can better perform detailed and comprehensive scanning and reconstruction of the patient's neck, shoulders and arms.

[0029] It should be noted that the above-mentioned supporting part 11 and fixing part 12 are both made of acrylic plate. Acrylic plate has the characteristics of high transparency and good mechanical properties. At the same time, the material is inexpensive and easy to shape. The production of the supporting part 11 and the fixing part 12 can effectively reduce the production cost of the upper limb brace.

[0030] In some embodiments, the surface of the support part 11 and the surface of the fixing part 12 are sprayed with an anti-reflection coating, which can significantly reduce the surface reflection of the support part 11 and the surface reflection of the fixing part 12, and reduce the interference with the scanning results; compared with traditional transparent materials, the support part 11 and the fixing part 12 sprayed with the anti-reflection coating can avoid interference with the shaping of the patient's arm and torso, which may cause the patient's arm and torso to be severely deformed or have a large difference from the actual shape when the three-dimensional model is reconstructed. Preferably, the anti-reflection coating is a silicon dioxide nano-coating or a silicone resin coating.

[0031] In some embodiments, the supporting portion 11 includes a supporting member 111 and a first extending portion 112; The fixed end of the support member 111 is hinged to the fixed end of the fixing portion 12, and one end of the adjusting portion 13 away from the fixing portion 12 is hinged to the movable end of the support member 111; The first extension portion 112 is slidably disposed on the support member 111 along the length direction of the support member 111, so that the length of the support portion 11 can be adjusted to fit patients of different body shapes (mainly referring to arm lengths), thereby making the application range of the upper limb brace wider.

[0032] Preferably, a first sleeve 113 is provided at the fixed end of the first extension portion 112, a first sliding hole is provided in the first sleeve 113, the axis of the first sliding hole is parallel to the length direction of the support member 111, and a first stopper is provided on the outer side wall of the first sleeve 113, and a stopper end of the first stopper can be inserted into the first sliding hole; The movable end of the support member 111 is provided with a first slider 114, and the first slider 114 is provided with a plurality of first plug holes matching with the first stopper, and the plurality of first plug holes are arranged along the length direction of the support member 111; the first sleeve 113 is sleeved on the first slider 114 through the first sliding hole, and is locked and fixed by the cooperation of the first stopper and the first plug hole; When it is necessary to adjust the length of the support portion 11, it is only necessary to take out the first limit member and pull the first extension portion 112 in a direction away from the support member 111 (extend), or push it in a direction close to the support member 111 (shorten). Then, the first limit member is inserted on the first sleeve 113 and inserted into the corresponding first socket, so that the positions of the support member 111 and the first extension portion 112 are relatively fixed, thereby completing the adjustment of the length of the support portion 11.

[0033] In some embodiments, the fixing portion 12 includes a fixing member 121 and a second extending portion 122; The fixed end of the fixing member 121 is hinged to the fixed end of the supporting member 111; The second extension portion 122 is slidably disposed on the fixing member 121 along the length direction of the fixing member 121, so that the length of the fixing portion 122 can be adjusted to fit patients of different body types (mainly heights), so that the upper limb brace has a wider application range; One end of the adjusting portion 13 away from the supporting portion 11 is hinged to the movable end of the second extending portion 122, providing a suitable fulcrum for the supporting portion 11, thereby improving the stability of the upper limb brace when in use.

[0034] Preferably, the fixing end of the fixing member 121 is provided with a second sleeve 123, a second sliding hole is provided in the second sleeve 123, the axis of the second sliding hole is parallel to the length direction of the fixing member 121, and a second stopper is provided on the outer side wall of the second sleeve 123, and the stopper end of the second stopper can be inserted into the second sliding hole; The movable end of the second extension portion 122 is provided with a second slider 124, and the second slider 124 is provided with a plurality of second plug holes matching with the second stopper, and the plurality of second plug holes are arranged along the length direction of the fixing member 121; the second sleeve 123 is sleeved on the second slider through the second sliding hole, and is locked and fixed by the cooperation of the second stopper and the second plug holes; When it is necessary to adjust the length of the fixing portion 12, it is only necessary to take out the second limiting member and pull the second extension portion 122 in a direction away from the fixing member 121 (extend), or drag it in a direction close to the fixing member 121 (shorten), and then insert the second limiting member on the second sleeve 123 and insert it into the corresponding second socket, so that the positions of the fixing member 121 and the second extension portion 122 are relatively fixed, thereby completing the adjustment of the length of the fixing portion 12.

[0035] In some embodiments, the adjusting portion 13 includes a supporting plate and two adjusting plates; wherein, Both ends of the support plate are provided with fixing bolts; The adjustment plate is provided with a plurality of through holes, which are arranged along the length direction of the adjustment plate. The two adjustment plates are respectively arranged at the two ends of the support plate by the cooperation of fixing bolts and the through holes, and the other two adjustment plates are respectively hinged to the support part 11 and the fixing part 12 at one end away from the support plate; when it is necessary to adjust the length of the adjustment part 13, it is only necessary to cooperate the fixing bolts with different through holes on the adjustment plate to make the adjustment of the angle between the support part 11 and the fixing part 12 more convenient; in addition, the adjustment part 13 can also provide sufficient supporting force to avoid the situation in which the relative position of the support part 11 and the fixing part 12 changes during the scanning process, thereby affecting the scanning accuracy and the scanning results.

[0036] In some embodiments, a limiting portion 115 is provided on the support portion 11; wherein, The limiting portion 115 is a "U"-shaped structure, the axis of the supporting portion 11 is perpendicular to the plane where the limiting portion 115 is located, and the opening of the limiting portion 115 is arranged in the north direction of the adjusting portion 13; When the patient places his arm on the support part 11, the patient's wrist will be stuck in the limiting part 115 through the opening of the limiting part 115, so as to prevent the patient's arm from slipping off the support part 11 during the scanning process, so as to make the use of the upper limb brace more convenient.

[0037] In some embodiments, the fixing strap 2 includes a strap A, a strap B and a strap C; wherein, The strap A and the strap B are both arranged on the fixing portion 12, the strap A is arranged near the fixed end of the fixing portion 12, and the strap B is arranged near the movable end of the fixing portion 12, and the fixed end of the strap A is detachably connected to the movable end of the strap A through a locking buckle, and the fixed end of the strap B is detachably connected to the movable end of the strap B through a locking buckle, so that the tightness of the strap A and the strap B can be adjusted; The fixed end of strap C is connected to strap B, and the movable end of strap C is passed around strap A and connected to strap B. When wearing the upper limb brace, the movable end of strap C in the fixing belt 2 can be passed around the patient's shoulder and connected to strap B to avoid the support frame slipping off the patient during wearing.

[0038] The present invention also provides a method for preparing an upper limb brace, the method comprising the following steps: Material preparation: Select an acrylic sheet (PMMA) with high transparency and good mechanical properties to ensure that it is easy to cut and shape during processing. At the same time, the acrylic sheet has sufficient strength and flexibility to fix the patient's arms and fingers, and has higher transparency and less light scattering, thereby reducing interference with the scanning results. After the material selection is completed, use a cutting device (laser cutting machine or CNC cutting equipment) to cut the transparent material into plates for preparing the support part 11 and the fixing part 12; Thermoforming: The cut plate is heated to a softening temperature (usually 160-180°C), and then cooled and formed in a mold according to the designed shape to complete the preparation of the support part 11 and the fixing part 12; this step ensures that the brace can fit the patient; Grinding and polishing: Grind the edges of the cooled and shaped support part 11 and the fixing part 12 to remove burrs and sharp edges to improve wearing comfort; then, based on traditional polishing, use nano-level polishing technology to make the surface of the brace achieve a mirror effect, further reduce light scattering, and ensure higher light penetration during scanning.

[0039] Spraying: spray the anti-reflection coating material evenly on the surface of the support part 11 and the fixing part 12; during the spraying process, the distance between the nozzle of the spray gun and the support part 11 or the fixing part 12 is maintained at 15-30 cm, and the spray gun is moved evenly to ensure uniform coating; Assembly and adjustment: Assemble the supporting portion 11 and the fixing portion 12 , and install the fixing belt 2 on the fixing portion 12 .

[0040] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An upper limb brace, characterized in that: It comprises a support frame (1) and a fixing belt (2); The support frame (1) comprises a supporting portion (11), a fixing portion (12) and an adjusting portion (13); the fixing end of the supporting portion (11) and the fixing end of the fixing portion (12) are hinged to form a "V"-shaped structure, the supporting portion (11) and the fixing portion (12) are both made of transparent material, and the surface of the supporting portion (11) and the surface of the fixing portion (12) are sprayed with an anti-reflection coating, the two ends of the adjusting portion (13) are respectively hinged to the supporting portion (11) and the fixing portion (12), and the length of the adjusting portion (13) can be adjusted according to usage requirements; The fixing belt (2) is arranged on the fixing portion (12), and the support frame (1) is fixed to the patient via the fixing belt (2).

2. The upper limb brace according to claim 1, characterized in that: The support portion (11) comprises a support member (111) and a first extension portion (112); The fixed end of the support member (111) is hinged to the fixed end of the fixed portion (12), and one end of the adjustment portion (13) away from the fixed portion (12) is hinged to the movable end of the support member (111); The first extension portion (112) is slidably arranged on the support member (111) along the length direction of the support member (111).

3. The upper limb brace according to claim 2, characterized in that: A first sleeve (113) is provided at the fixed end of the first extension portion (112), a first sliding hole is provided in the first sleeve (113), an axis of the first sliding hole is parallel to the length direction of the support member (111), and a first limiting member is provided on the outer side wall of the first sleeve (113), and a limiting end of the first limiting member can be inserted into the first sliding hole; The movable end of the support member (111) is provided with a first sliding block (114), and the first sliding block (114) is provided with a plurality of first plug holes matching the first limiting member, and the plurality of first plug holes are arranged in an array along the length direction of the support member (111); the first sleeve (113) is sleeved on the first sliding block (114) through the first sliding hole, and is locked and fixed by the cooperation between the first limiting member and the first plug holes.

4. The upper limb brace according to claim 1, characterized in that: The fixing portion (12) comprises a fixing piece (121) and a second extending portion (122); The fixed end of the fixing member (121) is hinged to the fixed end of the supporting portion (11); The second extension portion (122) is slidably arranged on the fixing member (121) along the length direction of the fixing member (121), and one end of the adjustment portion (13) away from the support portion (11) is hinged to the movable end of the second extension portion (122).

5. The upper limb brace according to claim 4, characterized in that: A second sleeve (123) is provided at the fixed end of the fixing member (121), a second sliding hole is provided in the second sleeve (123), an axis of the second sliding hole is parallel to the length direction of the fixing member (121), and a second limiting member is provided on the outer side wall of the second sleeve (123), and a limiting end of the second limiting member can be inserted into the second sliding hole; The movable end of the second extension portion (122) is provided with a second sliding block (124), and the second sliding block (124) is provided with a plurality of second plug holes matching the second limiting member, and the plurality of second plug holes are arranged along the length direction of the fixing member (121); the second sleeve (123) is sleeved on the second sliding block through the second sliding hole, and is locked and fixed by the cooperation between the second limiting member and the second plug holes.

6. The upper limb brace according to claim 1, characterized in that: The anti-reflection coating is a silicon dioxide nano coating or an organic silicon resin coating.

7. The upper limb brace according to claim 1, characterized in that: The fixing belt (2) comprises a strap A, a strap B and a strap C; The strap A and the strap B are both arranged on the fixing portion (12), the strap A is arranged close to the fixed end of the fixing portion (12), and the strap B is arranged close to the movable end of the fixing portion (12), and the fixed end of the strap A is detachably connected to the movable end of the strap A via a locking buckle, and the fixed end of the strap B is detachably connected to the movable end of the strap B via a locking buckle; The fixed end of the strap C is connected to the strap B, and the movable end of the strap C bypasses the strap A and is connected to the strap B.

8. The upper limb brace according to claim 1, characterized in that: A "U"-shaped limiting portion (115) is provided on the support portion (11), the limiting portion (115) is arranged close to the movable end of the support portion (11), and the opening of the support portion (11) is arranged in a direction away from the adjustment portion (13).

9. A method for preparing an upper limb brace, characterized in that: The method is used to prepare the upper limb brace according to any one of claims 1 to 8, and the method comprises the following steps: Material preparation: using a cutting device to cut the transparent material into plates for preparing the support portion (11) and the fixing portion (12); Thermoforming: heating the cut plate, and then cooling and shaping it in a mold according to the designed shape, thereby completing the preparation of the support part (11) and the fixing part (12); Grinding and polishing: Grinding the edges of the cooled and shaped support portion (11) and the fixing portion (12) to remove burrs and sharp edges; Spraying: evenly spraying the anti-reflection material on the surface of the support part (11) and the fixing part (12) to form an anti-reflection coating; during the spraying process, the distance between the nozzle of the spray gun and the support part (11) or the fixing part (12) is maintained at 15-30 cm, and the spray gun is evenly moved; Assembly and adjustment: Assembling the support portion (11) and the fixing portion (12), and installing a fixing belt (2) on the fixing portion (12).

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