Auxiliary brace for wrist joint rehabilitation training
By designing a forearm fixation brace and a palm fixation brace, using low-temperature thermoplastic material, the patient's forearm is fixed in a 45-degree pronation position. This solves the problem that existing wrist joint rehabilitation training braces cannot stabilize the DTM plane, thus improving the effectiveness of rehabilitation training and the reliability of research.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-03-10
AI Technical Summary
Existing wrist rehabilitation training braces cannot effectively stabilize the proximal row of wrist bones in the DTM plane, resulting in poor rehabilitation training effects and difficulty in simulating DTM movements, which affects patient rehabilitation outcomes and research evaluation.
A rehabilitation training assistive brace was designed, which includes a forearm fixation brace and a palm fixation brace. It is made of low-temperature thermoplastic material. Through the fixation components and connecting plates of the forearm and palm, it ensures that the patient's wrist can perform DTM movements in the sagittal plane. The fixed posture is forearm pronation at 45 degrees.
It enables patients to move stably in the DTM motion plane, improves the effectiveness of rehabilitation training and the reliability of research, reduces the difficulty of use for patients and individual differences, and enhances the stability and safety of rehabilitation exercises.
Smart Images
Figure CN223979889U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, specifically, wrist joint rehabilitation training auxiliary brace is provided. BACKGROUND
[0002] Scapholunate interosseous ligament (SLIL) injury is the most common wrist ligament injury, according to the injury condition, can adopt percutaneous kirschner wire fixed scapholunate joint, open reduction fixation and repair ligament or ligament reconstruction treatment. In order to reduce the tension of SLIL after operation, wrist joint usually needs to be fixed for 8 weeks to 10 weeks. After operation, the traditional short arm brace needs to be worn to protect the damaged or healing tissue, and the brace completely restricts the activity of wrist joint, and the brace needs to be removed when exercising.
[0003] Kinematic research proves that the rotation of scaphoid is minimum when wrist joint carries out dart-throwing motion (or dart thrower's motion, DTM) in 45° plane (i.e. radial side dorsiflexion-palmar flexion direction at 45° angle with sagittal plane), compared with wrist joint flexion and extension and radial-ulnar deviation motion, DTM is more suitable for rehabilitation exercise of wrist joint. DTM motion axis passes through the radial side-palmar side of scaphoid tubercle and the ulnar side-dorsal side of hamate.
[0004] Using the existing brace design cannot achieve the most ideal DTM plane of stabilizing proximal row carpal bones (scaphoid, lunate, triquetrum, pisiform), and because DTM motion occurs in an inclined plane rather than an orthogonal plane, patients have difficulty in completing DTM during rehabilitation exercise and individual differences exist, so that the clinical effect has uncertainty, and it is not conducive to further research and effect evaluation on wrist joint motion during exercise. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a kind of wrist joint rehabilitation training auxiliary brace to alleviate the technical problem of poor rehabilitation exercise effect of existing brace in prior art.
[0006] Firstly, the utility model embodiment provides a kind of wrist joint rehabilitation training auxiliary brace, including forearm fixed wrapping brace and palm fixed brace;
[0007] The forearm fixed wrapping brace uses low-temperature thermoplastic plate;
[0008] The forearm fixed wrapping brace includes forearm distal end fixing piece for fixing the wrist of patient, forearm proximal end fixing piece for fixing the lower arm of patient and the lower arm connecting plate for connecting the palm fixed brace, and the lower arm connecting plate is pivotally connected with the palm fixed brace;
[0009] The small arm connecting plate is located on the inner side of the patient's wrist.
[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned distal forearm fixing member adopts a wrist fixing plate, and the ratio of the length of the wrist fixing plate to the circumference of the patient's forearm at the proximal level of the ulnar head is between 0.7 and 0.8.
[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the ratio of the length of the wrist fixing plate to the circumference of the patient's forearm at the proximal level of the ulnar head is 0.75.
[0012] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned proximal forearm fixing member adopts a small arm fixing plate, and the ratio of the length of the proximal forearm fixing member to the outer circumference of the patient's ulnar head at a distance of 3 / 4 of the forearm length from the proximal ulnar head is between 0.7 and 0.8.
[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the ratio of the length of the proximal forearm fixing member to the outer circumference of the patient's ulnar head at a distance of 3 / 4 of the forearm length from the proximal ulnar head is 0.75.
[0014] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned forearm fixing and wrapping brace is in a "tu" shape when not in use.
[0015] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned palm fixing brace includes a palm fixing plate and a palm connecting plate;
[0016] The palm fixing plate and the palm connecting plate are connected to each other, and the extending directions of the palm fixing plate and the palm connecting plate intersect;
[0017] The palm connecting plate is located on the inner side of the palm, and the palm connecting plate is pivotally connected to the small arm connecting plate.
[0018] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned palm fixing brace is in a "T" shape when not in use.
[0019] In combination with the first aspect, an embodiment of the present invention provides a possible implementation manner of the first aspect. Among them, the above-mentioned palm fixing plate includes a palm board and a backhand board that are connected to each other, and both the palm board and the backhand board are connected to the palm connecting plate.
[0020] In conjunction with the first aspect, this utility model embodiment provides one possible implementation of the first aspect, wherein the aforementioned hand fixing support is made of low-temperature thermoplastic plate.
[0021] Beneficial effects:
[0022] This utility model provides a wrist joint rehabilitation training auxiliary brace, including a forearm fixation and wrapping brace and a palm fixation brace; the forearm fixation and wrapping brace is made of low-temperature thermoplastic plate; the forearm fixation and wrapping brace includes a distal forearm fixation member for fixing the patient's wrist, a proximal forearm fixation member for fixing the patient's forearm, and a forearm connecting plate for connecting to the palm fixation brace, the forearm connecting plate being pivotally connected to the palm fixation brace; the forearm connecting plate is located on the inner side of the patient's wrist.
[0023] Specifically, during the brace application process, medical staff manufacture appropriately sized forearm and hand fixation braces based on the patient's forearm and hand dimensions. The patient maintains a 90-degree elbow flexion and 45-degree forearm pronation. The medical staff heats the distal and proximal forearm fixation components of the forearm fixation brace, then wraps the heated, malleable distal forearm fixation component around the patient's wrist and the heated, malleable proximal forearm fixation component around the patient's forearm. Simultaneously, the forearm connecting plate is positioned on the inner side of the patient's wrist. The forearm fixation brace secures the patient's forearm to a 45-degree pronation position. Next, the hand fixation brace is applied, connecting to the forearm connecting plate of the forearm fixation brace. This allows the patient's wrist to perform radial dorsiflexion-ulnar flexion movements (DTM) in the sagittal plane while maintaining a 45-degree pronation position, which aids in patient rehabilitation. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 A schematic diagram of the forearm fixation and wrapping brace in the wrist joint rehabilitation training auxiliary brace provided in this embodiment of the utility model before use;
[0026] Figure 2 A schematic diagram of the hand fixation brace in the wrist joint rehabilitation training auxiliary brace provided in this embodiment of the utility model before use;
[0027] Figure 3A schematic diagram showing the measurement data of the patient's arm by medical staff before wearing the wrist joint rehabilitation training assistive brace provided in this embodiment of the utility model;
[0028] Figure 4 A diagram illustrating the patient's elbow flexion;
[0029] Figure 5 A diagram illustrating the patient's pronation.
[0030] Figure 6 A diagram illustrating how medical staff can palpate a patient to determine the scaphoid tubercle and the fourth metacarpal bone.
[0031] icon:
[0032] 100 - Forearm fixation and wrapping brace; 110 - Distal forearm fixation component; 120 - Proximal forearm fixation component; 130 - Forearm connecting plate;
[0033] 200 - Hand fixation brace; 210 - Hand fixation plate; 211 - Hand plate; 212 - Back of hand plate; 220 - Hand connecting plate. Detailed Implementation
[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.
[0039] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment provides a wrist joint rehabilitation training auxiliary brace, including a forearm fixation and wrapping brace 100 and a palm fixation brace 200; the forearm fixation and wrapping brace 100 is made of low-temperature thermoplastic plate; the forearm fixation and wrapping brace 100 includes a distal forearm fixation member 110 for fixing the patient's wrist, a proximal forearm fixation member 120 for fixing the patient's forearm, and a forearm connecting plate 130 for connecting the palm fixation brace 200, the forearm connecting plate 130 being pivotally connected to the palm fixation brace 200; the forearm connecting plate 130 is located on the inner side of the patient's wrist.
[0040] Specifically, before fabricating the brace, medical personnel use palpation to draw the extension line of the long axis of the fourth metacarpal bone proximally on the dorsal side of the patient's wrist where the brace will be worn, and mark it at the level of the scaphoid tubercle. These marks are used to adjust the position of the brace connection. During brace application, medical personnel fabricate a forearm fixation brace 100 and a hand fixation brace 200 of appropriate size according to the patient's forearm and hand dimensions. The patient maintains a 90-degree elbow flexion and 45-degree forearm pronation. Medical personnel heat the distal forearm fixation component 110 and the proximal forearm fixation component 120 of the forearm fixation brace 100. The heated, malleable distal forearm fixation component 110 is then wrapped around the patient's wrist, and the heated, malleable proximal forearm fixation component 120 is placed around the wrist. The fixation piece 120 is wrapped around the patient's forearm, while the forearm connecting plate 130 is located on the inner side of the patient's wrist. The forearm fixation brace 100 stabilizes the patient's forearm in a 45-degree pronation position. Then, the patient wears a hand fixation brace 200, which is connected to the forearm connecting plate 130 of the forearm fixation brace 100. Medical personnel can adjust the position of the connection point by moderately heating the connecting plate, ensuring it is near the marked location. With the patient's arm maintained in a 45-degree pronation position, the patient's wrist can perform radial dorsiflexion-ulnar flexion movements in the sagittal plane, i.e., DTM movements, which aid in patient rehabilitation.
[0041] See Figure 6 As shown, Figure 6 The middle left image shows medical staff determining the location of the scaphoid tubercle (point A) through palpation (the bony tubercle distal to the flexor carpi radialis tendon). Figure 6 The middle right image shows: Palpation is used to determine the long axis of the fourth metacarpal bone. The extension line of the long axis of the fourth metacarpal bone to its proximal end is drawn, and a mark is made at the level of the scaphoid tubercle on the extension line (point B). When connecting the two parts of the brace, the connection point (rivet) is shaped to be located near point B.
[0042] Both the forearm fixation brace 100 and the hand fixation brace 200 are made of low-temperature thermoplastic sheet. The low-temperature thermoplastic sheet can be shaped after being heated at a low temperature. After being shaped, the forearm fixation brace 100 and the hand fixation brace 200 can maintain their strength during daily use, making them easy for medical staff to operate and meeting the rehabilitation needs of patients in daily use.
[0043] Furthermore, when the braces are in place, medical staff will gently pull the low-temperature thermoplastic plate wrapped around the patient's arm, wrist, and hand to conform it to the patient's arm, as both the forearm fixation brace 100 and the hand fixation brace 200 are soft and malleable. Then, they will wait for the low-temperature thermoplastic plate to cool down and solidify, ensuring that the forearm fixation brace 100 and the hand fixation brace 200 conform to the patient's body shape. Combined with the stabilizing effect of Velcro, this ensures that the patient's bones are in a posture conducive to rehabilitation.
[0044] It should be noted that when wearing the brace, the patient is always in a position with the elbow flexed at 90 degrees and the forearm pronated at 45 degrees. Then, the medical staff wraps the malleable distal forearm fixation piece 110 and proximal forearm fixation piece 120 around the patient's forearm. After the distal forearm fixation piece 110 and proximal forearm fixation piece 120 cool down, the patient's forearm is restricted by the brace, which is equivalent to being held and fixed in the pronated 45-degree position, so that the patient's wrist can perform radial dorsiflexion-ulnar flexion movement in the sagittal plane (i.e., DTM movement).
[0045] It should be noted that because the ulna and radius in the human forearm can rotate relative to each other, the forearm distal fixation piece 110 and forearm proximal fixation piece 120 can fix the patient in a 45-degree pronation position. That is, the human wrist is not cylindrical, but flat, so it can be fixed by pressure.
[0046] It should also be noted that the "inner side" mentioned throughout the text refers to the ulnar side of the wrist, which is the side of the forearm closer to the ulna and the side closer to the radius.
[0047] In addition, the "inner side" mentioned throughout the text refers to the side of the palm closest to the body when the palm is flat and facing upwards.
[0048] In addition, before putting a brace on the patient, first put a plaster cast on the patient to protect the patient's skin, and then keep the patient in a position with the elbow flexed at 90 degrees and the forearm pronated at 45 degrees.
[0049] like Figure 4 and Figure 5 As shown, elbow flexion refers to: starting in a supine position, with arms at the sides of the torso and palms facing upwards (0 degrees flexion), forearms close to the upper arms (90 degrees flexion), and forearms forming a 90-degree angle with the upper arms (90 degrees flexion). Pronation refers to: starting in a sitting or standing position, with arms at the sides of the torso and elbows close to the torso, elbows bent at 90 degrees, hands gripping a horizontal bar (or pencil), and the bar forming a 90-degree angle with the horizontal plane (neutral position, i.e., 0 degrees pronation), rotating the forearm so that the back of the hand faces upwards (45 degrees pronation), and then rotating the bar so that the bar forms a 45-degree angle with the horizontal plane (45 degrees pronation).
[0050] See Figure 1 ,Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 5 , Figure 6 , in an alternative embodiment of the present embodiment, the distal forearm fixing member 110 adopts a wrist fixing plate, and the ratio of the length of the wrist fixing plate to the circumference of the patient's forearm at the proximal level of the ulnar head is between 0.7 and 0.8.
[0051] Among them, the ratio of the length of the wrist fixing plate to the circumference of the patient's forearm at the proximal level of the ulnar head is 0.75.
[0052] Among them, the proximal forearm fixing member 120 adopts a forearm fixing plate, and the ratio of the length of the proximal forearm fixing member 120 to the outer circumference of the patient's ulnar head at a distance of 3 / 4 of the forearm length from the proximal end of the ulnar head is between 0.7 and 0.8.
[0053] Among them, the ratio of the length of the proximal forearm fixing member 120 to the outer circumference of the patient's ulnar head at a distance of 3 / 4 of the forearm length from the proximal end of the ulnar head is 0.75.
[0054] Among them, when the forearm fixing wrap brace 100 is not in use, it is in a "soil" shape. Among them, when the palm fixing brace 200 is not in use, it is in a "T" shape.
[0055] Among them, the palm fixing brace 200 includes a palm fixing plate 210 and a palm connecting plate 220; the palm fixing plate 210 and the palm connecting plate 220 are connected to each other, and the extending directions of the palm fixing plate 210 and the palm connecting plate 220 intersect; the palm connecting plate 220 is located on the inner side of the palm, and the palm connecting plate 220 is pivotally connected to the forearm connecting plate 130.
[0056] Among them, the palm fixing plate 210 includes a palm plate 211 and a dorsal hand plate 212 that are connected to each other, and both the palm plate 211 and the dorsal hand plate 212 are connected to the palm connecting plate 220.
[0057] Specifically, because different patients have different body types, before fitting the brace, medical staff measured each patient's hand circumference at the level of the distal palmar crease (a), forearm circumference at the level of the proximal ulna (b), forearm circumference at the point 3 / 4 of the forearm length from the proximal ulnar head (c), distance from the distal palmar crease to the proximal ulnar head (d), and forearm length (defined as the distance from the ulnar styloid process to the olecranon) (e). The length of the distal forearm fixation piece 110 was 0.75b. The length of the proximal forearm fixation piece 120 is 0.75c. The length of the forearm connecting plate 130, the distal forearm fixation piece 110, and the proximal forearm fixation piece 120 along the direction of the patient's forearm is 0.75e. The length of the palm fixation plate 210 is 0.75a. The length of the palm plate 211 is 0.3a. The length of the back of the hand plate 212 is 0.45a. The length of the palm connecting plate 220 and the palm fixation plate 210 along the direction of the patient's forearm is d.
[0058] The palm connecting plate 220 and the forearm connecting plate 130 are pivotally connected by pins or rivets.
[0059] In addition, Velcro fasteners are provided at both ends of the distal forearm fixation member 110, the forearm connecting plate 130, and the palm fixation plate 210 to further improve stability.
[0060] Furthermore, the wrist joint rehabilitation training assistive brace provided in this embodiment, by restricting forearm pronation and rivet direction, allows the patient's wrist joint to perform DTM (Direct Targeting) in the vertical plane. Compared to movements in an inclined plane, this makes it easier for patients to understand and complete rehabilitation exercises. Moreover, the brace's strip-type design results in a lighter weight compared to traditional short-arm braces, improving comfort and patient compliance. Additionally, restricting the wrist joint DTM plane to 45° pronation, compared to the plane simulated in dart throwing, is more conducive to stabilizing the proximal carpal bones and better protecting damaged tissues post-operatively.
[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A wrist rehabilitation training assistive brace, characterized in that, The application relates to a forearm fixation wrapping brace (100) and a palm fixation brace (200). The forearm fixation wrapping brace (100) is made of low-temperature thermoplastic plate. The forearm fixation wrapping brace (100) comprises a forearm distal end fixation piece (110) for fixing the wrist of a patient, a forearm proximal end fixation piece (120) for fixing the lower arm of the patient and a lower arm connecting plate (130) for connecting the palm fixation brace (200), wherein the lower arm connecting plate (130) is pivotally connected with the palm fixation brace (200). The lower arm connecting plate (130) is located at the inner side of the wrist of the patient. The wrist fixation plate has a length-to-circumference ratio of 0.7-0.
8.
2. The wrist rehabilitation training assistive brace according to claim 1, characterized in that, The wrist fixation plate has a length-to-circumference ratio of 0.
75.
3. The wrist rehabilitation training assistive brace according to claim 2, characterized in that, The lower arm fixation plate has a length-to-circumference ratio of 0.7-0.
8.
4. The wrist rehabilitation training assistive brace according to claim 1, characterized in that, The lower arm fixation plate has a length-to-circumference ratio of 0.
75.
5. The wrist rehabilitation training assistive brace according to claim 4, characterized in that, The forearm fixation wrapping brace (100) has a "earth" shape when not in use.
6. The wrist rehabilitation training assistive brace according to claim 1, wherein, The palm fixation brace (200) comprises a palm fixation plate (210) and a palm connecting plate (220).
7. The wrist rehabilitation training assistive brace according to claim 1, wherein, The palm fixation plate (210) and the palm connecting plate (220) are connected with each other, and the extension directions of the palm fixation plate (210) and the palm connecting plate (220) are intersected. The palm connecting plate (220) is located at the inner side of the palm, and the palm connecting plate (220) is pivotally connected with the lower arm connecting plate (130). The palm fixation brace (200) has a "T" shape when not in use.
8. The wrist rehabilitation training assistive brace according to claim 7, characterized in that, The palm fixation plate (210) comprises a palm plate (211) and a back-of-hand plate (212) which are connected with each other, and the palm plate (211) and the back-of-hand plate (212) are both connected with the palm connecting plate (220).
9. The wrist rehabilitation training assistive brace according to claim 8, characterized in that, The palm fixation brace (200) is made of low-temperature thermoplastic plate.
10. The wrist rehabilitation training assistive brace according to any one of claims 1-9, characterized in that,