Adjustable elbow joint movement rehabilitation brace

Abstract

The invention relates to an adjustable elbow joint movement rehabilitation brace which comprises a flexion and extension movement unit and a rotary movement unit connected with the flexion and extension movement unit, and the flexion and extension movement unit is divided into a large arm fixing assembly and a small arm fixing assembly. And one end of a rotary fixing bracket of the rotary motion unit is connected to a sliding block on a forearm bracket of the flexion and extension motion unit. The elbow joint movement rehabilitation brace has three modes of resistance-free rehabilitation training, resistance rehabilitation training and fixed rotation training, and rehabilitation requirements of different patients can be better met; meanwhile, the relative positions of the sliding blocks on the forearm support and the big arm support, the rotary fixing support and the outer side end cover can be adjusted, a user can wear the device more comfortably, users with different arm sizes can use the device better, and the application range is wide.

Description

Technical Field

[0001] The invention belongs to the technical field of elbow joint rehabilitation training, relates to an elbow joint rehabilitation training brace, and particularly relates to an adjustable elbow joint activity rehabilitation brace. Background Art

[0002] The elbow joint is the pivotal joint that connects and controls the hand. As the positioning joint between the forearm and hand, its mobility has become increasingly important with the significant changes in modern lifestyles and work styles. Driving, exercising, eating, dressing, and using computers and mobile phones all rely on a flexible elbow joint, and its functional integrity impacts the function of the entire upper limb.

[0003] Elbow replacement surgery can effectively relieve pain and quickly restore function for patients with elbow fractures, moderate to severe osteoarthritis, bone tumors and congenital joint dysplasia, elbow pain, deformity and ankylosis caused by severe trauma, and elbow deformity caused by rheumatoid arthritis.

[0004] Prosthesis loosening is a common complication after elbow replacement surgery. Although elbow surgery has developed relatively comprehensive treatment methods, the incidence of aseptic loosening of the prosthesis after replacement is still as high as 17%. The revision rate after replacement is also high, reaching 18%. Good prosthesis osseointegration is the key to successful implantation.

[0005] Postoperative patients can accelerate bone reconstruction, promote bone growth, and reduce the incidence of prosthesis loosening by performing certain rehabilitation training with rehabilitation braces under appropriate mechanical stimulation by regulating the activity of osteoblasts and osteoclasts.

[0006] Currently, common rehabilitation braces include dynamic stretching splints, static stretching braces, continuous passive trainers, static progressive stretching braces, etc. These rehabilitation braces have a good effect on the patient's rehabilitation, but they all have only one rehabilitation training mode with or without resistance. At the same time, the arm fixing devices of these braces cannot be adjusted and cannot meet the rehabilitation needs of different patients. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an adjustable elbow joint activity rehabilitation brace.

[0008] The present invention solves the technical problem by the following technical solutions:

[0009] An adjustable elbow joint activity rehabilitation brace, comprising a flexion and extension motion unit and a rotation motion unit connected to the flexion and extension motion unit;

[0010] The flexion and extension movement unit includes an arm shaft and an arm shaft that are connected to each other, and the front and rear ends of the arm shaft are fixedly connected to the shell and the rear shell respectively by a first connecting bolt and a second connecting bolt, the front end of the shell is provided with an adjusting knob, the adjusting knob is connected to one end of the spiral shaft through a self-lubricating bushing provided with a bearing hole in the shell and a third connecting bolt, the other end of the spiral shaft is connected to the spiral shaft nut through a protrusion on the slide shaft and the slide shaft, and the slide shaft connects the spiral shaft nut to the spline shaft fixing member and the spline shaft through a key, and the spline shaft fixing member is connected to the spline shaft, and the arm shaft is connected to the damper through a fourth connecting bolt, the arm shaft is connected to the arm bracket, and a slider is installed on the arm bracket; a thin-walled bearing is provided between the arm shaft and the arm shaft, the arm bracket is connected to the arm bracket, and a slider is installed on the arm bracket, and fixing belts are arranged at intervals on the slider;

[0011] The rotational motion unit includes a rotational fixed bracket, a hand-side end cover and an outer end cover, one end of the rotational fixed bracket is connected to the slider on the forearm bracket, the other end of the rotational fixed bracket is connected to the outer end cover through a rotation shaft, the other end of the rotation shaft is connected to the hand-side end cover, a first bearing and a second bearing are respectively arranged between the hand-side end cover and the outer end cover and the rotation shaft, and the outer side of the outer end cover is connected to the rotating cap through a long pin.

[0012] Moreover, the upper arm shaft and the lower arm shaft, the rotating cap and the outer end cover, and the spiral shaft nut and the slide shaft are all connected by a mortise and tenon structure.

[0013] Moreover, four circular stepped holes are arranged at intervals on the shell, and the first connecting bolts are passed through the stepped holes to connect with the boom shaft. Four circular stepped holes are arranged at intervals on the circular protrusion of the shell, and the fifth connecting bolts are passed through the stepped holes to connect with the slide shaft.

[0014] Moreover, four rectangular keyways and four rectangular protrusions are provided on the slide shaft, and the spiral shaft nut, the spline shaft fixing member and the spline shaft are connected through keys.

[0015] Moreover, three circular stepped holes are provided on the front side of the boom shaft, and the sixth connecting bolt is passed through the stepped holes to connect with the boom bracket; two circular through holes are provided on the rear side of the boom shaft, and the fourth connecting bolt is passed through the circular through holes to connect with the damper; three circular through holes are provided on the rear side of the boom shaft, and the second connecting bolt is passed through the circular through holes to connect with the rear shell.

[0016] Moreover, a rectangular through hole is opened at the front end of the slider, which is used to connect with the upper arm bracket / lower arm bracket and slide on the upper arm bracket / lower arm bracket. A threaded hole is provided in the middle of the rectangular through hole of the slider, which is connected to the upper arm bracket / lower arm bracket through the seventh connecting bolt. Two rectangular grooves are provided at the end of the slider, and fixing belts are installed in the rectangular grooves.

[0017] Moreover, a threaded hole is provided on the rotating fixed bracket, which is connected to the slider through an eighth connecting bolt; a rectangular hole is provided on the end face of the rotating fixed bracket for connecting to the outer end cover and allowing the outer end cover to slide therein; six threaded holes are provided on the upper part of the rotating fixed bracket, which is connected to the outer end cover through a ninth connecting bolt.

[0018] Moreover, a circular through hole is provided on the rotating cap, two circular through holes are provided on the rotating shaft, and a circular through hole is provided on the circular protrusion of the hand side end cover, which are connected with a long pin and a short pin respectively.

[0019] Moreover, the rehabilitation brace has three modes: elbow joint non-resistance training, elbow joint resistance training and elbow joint fixed rotation:

[0020] (a) Elbow joint unresistance training: After adjusting the slider to a comfortable position for the patient, secure the patient's forearm to the forearm support with a fixation strap, and secure the patient's upper arm to the upper arm support with a fixation strap. Rotate the adjustment knob to move the screw shaft and the screw shaft nut, so that the spline shaft moves to a position where it is not engaged with the forearm shaft rotating gear and the upper arm shaft rotating gear. Adjust the rehabilitation brace to active rehabilitation training mode, and the user can complete unresistance elbow flexion and extension exercises with their own arm strength.

[0021] (b) Elbow joint resistance training: After the slider is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support with a fixing belt, and the patient's upper arm is fixed to the upper arm support with a fixing belt. The adjustment knob is rotated to move the spiral shaft and the spiral shaft nut, so that the spline shaft moves to a position that meshes with the rotating gear of the forearm shaft. The rehabilitation brace is adjusted to the resistance rehabilitation training mode. The user uses his or her own arm strength to overcome the resistance of the damper to complete the elbow flexion and extension movement;

[0022] (c) Elbow joint fixed rotation: After the slider is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support with a fixed strap, and the patient's upper arm is fixed to the upper arm support with a fixed strap. When the elbow joint moves to the appropriate position, the adjustment knob is rotated to cause the spiral shaft to drive the spiral shaft nut to move, so that the spline shaft moves to a position where it simultaneously engages with the forearm shaft rotation gear and the upper arm shaft rotation gear. The rehabilitation brace is adjusted to fixed mode to fix the position of the elbow joint support, thereby fixing the elbow joint position. At this time, the patient holds the hand-side end cap and rotates the rotating cap so that the rotating shaft drives the hand-side end cap to rotate, thereby driving the elbow joint to complete passive rotation movement.

[0023] The advantages and beneficial effects of the present invention are:

[0024] 1. The elbow joint activity rehabilitation brace of the present invention has three modes: no-resistance rehabilitation training, resistance rehabilitation training, and fixed rotation training, which can better meet the rehabilitation needs of different patients.

[0025] 2. The relative positions of the fixing devices, rotating fixing brackets and outer end covers on the forearm bracket and upper arm bracket of the elbow joint activity rehabilitation brace of the present invention can be adjusted, which can make the user more comfortable to wear and can also allow users with different arm sizes to use it better, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 Schematic diagram of the structure of the flexion and extension motion unit of the present invention;

[0028] Figure 3 Schematic diagram of the structure of the rotary motion unit of the present invention;

[0029] Figure 4 This is a schematic diagram of the position of the spline shaft during elbow joint resistance-free training according to the present invention;

[0030] Figure 5 This is a schematic diagram of the position of the spline shaft during resistance training of the elbow joint according to the present invention;

[0031] Figure 6 This is a schematic diagram of the position of the spline shaft during elbow joint fixed rotation training according to the present invention.

[0032] Description of Reference Numerals

[0033] Flexion and extension motion unit 1, third connecting bolt 1-1, adjusting knob 1-2, self-lubricating sleeve 1-3, fifth connecting bolt 1-4, first connecting bolt 1-5, housing 1-6, screw shaft 1-7, slide shaft 1-8, spline shaft fixing part 1-9, key 1-10, screw shaft nut 1-11, spline shaft 1-12, thin-walled bearing 1-13, small arm shaft 1-14, sixth connecting bolt 1-15, upper arm shaft 1-16, upper arm bracket 1-17, damper 1-18, rear housing 1-19, tenth connecting bolt 1-20, small arm bracket 1-21, seventh connecting bolt 1-22, slider 1-23, second connecting bolt 1-24, fourth connecting bolt 1-25.

[0034] Rotational motion unit 2, eighth connecting bolt 2-1, rotational fixing bracket 2-2, ninth connecting bolt 2-3, short pin 2-4, hand side end cover 2-5, first bearing 2-6, second bearing 2-7, outer end cover 2-8, rotating shaft 2-9, rotating cap 2-10, long pin 2-11. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0036] like Figures 1 to 3 As shown, an adjustable elbow joint activity rehabilitation brace, the innovation of which is that it includes a flexion and extension motion unit 1 and a rotation motion unit 2 connected to the flexion and extension motion unit;

[0037] The flexion and extension motion unit 1 includes an upper arm shaft 1-16 and a lower arm shaft 1-14 that are connected to each other. The front and rear ends of the upper arm shaft 1-16 are fixedly connected to the housing 1-2 and the rear housing 1-19 respectively through the first connecting bolt 1-5 and the second connecting bolt 1-24. The front end of the housing 1-2 is provided with an adjusting knob 1-2. The adjusting knob 1-2 is connected to one end of the spiral shaft 1-7 through a self-lubricating sleeve 1-3 with a bearing hole provided in the housing 1-6 and a third connecting bolt 1-1. The other end of the spiral shaft 1-7 is connected to the spiral shaft nut 1-11. The spiral shaft nut 1-11 is connected to the slide shaft 1-8 through the protrusion on the slide shaft 1-8. The slide shaft 1 -8 The spiral shaft nut 1-11 is connected to the spline shaft fixing part 1-9 and the spline shaft 1-12 through the key 1-10. The spline shaft fixing part 1-9 is connected to the spline shaft 1-12. The upper arm shaft 1-16 is connected to the damper 1-18 through the fourth connecting bolt 1-25. The upper arm shaft 16 is connected to the upper arm bracket 1-17. The slider 1-23 is installed on the upper arm bracket 1-17. A thin-walled bearing 1-13 is set between the lower arm shaft 1-14 and the upper arm shaft 1-16. The lower arm bracket 1-21 is connected to the lower arm shaft 1-14. The slider 1-23 is installed on the lower arm bracket 1-21. Fixing belts are arranged at intervals on the slider 1-23.

[0038] The rotational motion unit 2 includes a rotational fixed bracket 2-2, a hand side end cover 2-5 and an outer end cover 2-8, one end of the rotational fixed bracket 2-2 is connected to the slider 1-23 on the forearm bracket 1-21, the other end of the rotational fixed bracket 2-2 is connected to the outer end cover 2-8 through a rotation shaft 2-9, the other end of the rotation shaft 2-9 is connected to the hand side end cover 2-5, a first bearing 2-6 and a second bearing 2-7 are respectively arranged between the hand side end cover 2-5 and the outer end cover 2-8 and the rotation shaft 2-9, and the outer side of the outer end cover 2-8 is connected to the rotation cap 2-10 through a long pin 2-11.

[0039] The upper arm shaft 2-26 and the lower arm shaft 1-14, the rotating cap 2-10 and the outer end cover 2-8, and the spiral shaft nut 1-11 and the slide shaft 1-8 are all connected by a mortise and tenon structure.

[0040] The adjusting knob 1-2 is provided with a circular stepped hole and is connected to the spiral shaft 1-7 via a third connecting bolt 1-1.

[0041] Four circular stepped holes are arranged at intervals on the outer shell 1-6, and the first connecting bolt 1-5 is passed through the stepped hole to connect with the upper arm shaft 1-16. Four circular stepped holes are arranged at intervals on the circular protrusion of the outer shell 1-6, and the stepped hole is connected with the slide shaft 1-8 through the fifth connecting bolt 1-4.

[0042] The slide shaft 1-8 is provided with four rectangular keyways and four rectangular protrusions, and the spiral shaft nut 1-11, the spline shaft fixing member 1-9 and the spline shaft 1-12 are connected through the key 1-10.

[0043] The front side of the boom shaft 1-16 is provided with three circular stepped holes, and the sixth connecting bolt 1-15 is passed through the stepped holes and connected to the boom bracket 1-17; the rear side of the boom shaft 1-16 is provided with two circular through holes, and the fourth connecting bolt 1-25 is passed through the circular through holes and connected to the damper 1-18; the rear side of the boom shaft 1-16 is provided with three circular through holes, and the second connecting bolt 1-24 is passed through the circular through holes and connected to the rear shell 1-19.

[0044] The arm shaft 1-14 is provided with three circular stepped holes and is connected to the arm bracket 1-21 via bolts 1-20.

[0045] The slider 1-23 has a rectangular through hole at the front end, which is used to connect with the upper arm bracket 1-17 / low arm bracket 1-21 and slide on the upper arm bracket 1-17 / low arm bracket 1-21. A threaded hole is provided in the middle of the rectangular through hole of the slider 1-23, which is connected to the upper arm bracket 1-17 / low arm bracket 1-21 through the seventh connecting bolt 1-22. Two rectangular grooves are provided at the end of the slider 1-23, and fixing belts are installed in the rectangular grooves.

[0046] The rotating fixed bracket 2-2 is provided with a threaded hole, which is connected to the slider 1-23 through the eighth connecting bolt 2-1; a rectangular hole is provided on the end face of the rotating fixed bracket 2-2 for connecting with the outer end cover 2-8 and allowing the outer end cover 2-8 to slide therein; six threaded holes are provided on the upper part of the rotating fixed bracket 2-2, which is connected to the outer end cover 2-8 through the ninth connecting bolt 2-3.

[0047] The rotating cap 2-10 is provided with a circular through hole, the rotating shaft 2-9 is provided with two circular through holes, and the circular protrusion of the hand side end cover 2-5 is provided with a circular through hole, which are connected by a long pin 2-11 and a short pin 2-4 respectively.

[0048] The fixing belt is a thickened nylon belt, which is wrapped around the forearm and the upper arm through Velcro.

[0049] like Figures 4-6 As shown, the rehabilitation brace of the present invention has three modes: elbow joint non-resistance training, elbow joint resistance training and elbow joint fixed rotation:

[0050] (a) Elbow joint resistance-free training: After adjusting the slider 1-23 to a comfortable position for the patient, fix the patient's forearm to the forearm support 1-21 with a fixing belt, and fix the patient's upper arm to the upper arm support 1-17 with a fixing belt. Rotate the adjustment knob 1-2 to make the screw shaft 11-7 drive the screw shaft nut 1-11 to move, so that the spline shaft 1-12 moves to a position where it is not engaged with the rotating gear of the forearm shaft 1-14 and the rotating gear of the upper arm shaft 1-16. Adjust the rehabilitation brace to the active rehabilitation training mode, and the user can complete the elbow joint flexion and extension exercise without resistance by relying on his own arm strength.

[0051] (b) Elbow joint resistance training: After the slider 1-23 is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support 1-21 with a fixing belt, and the patient's upper arm is fixed to the upper arm support 1-17 with a fixing belt. The adjustment knob 1-2 is rotated to make the spiral shaft 11-7 drive the spiral shaft nut 1-11 to move, so that the spline shaft 1-12 moves to a position where it meshes with the rotating gear of the forearm shaft 11-16. The rehabilitation brace is adjusted to the resistance rehabilitation training mode. The user uses his or her own arm strength to overcome the resistance of the damper 1-18 to complete the elbow flexion and extension movement;

[0052] (c) Elbow joint fixed rotation: After the slider 1-23 is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support 1-21 with a fixing belt, and the patient's upper arm is fixed to the upper arm support 1-17 with a fixing belt. When the elbow joint moves to the appropriate position, the adjustment knob 1-2 is rotated to make the screw shaft 1-7 drive the screw shaft nut 1-11 to move, so that the spline shaft 1-12 moves to a position where it is simultaneously engaged with the rotating gear of the forearm shaft 1-16 and the rotating gear of the upper arm shaft 1-16. The rehabilitation brace is adjusted to the fixed mode to fix the position of the elbow joint support, thereby fixing the position of the elbow joint. At this time, the patient holds the hand-side end cover 2-5 and rotates the rotating cap 2-10 to make the rotating shaft 2-9 drive the hand-side end cover 2-5 to rotate, thereby driving the elbow joint to complete passive rotation movement.

[0053] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An adjustable elbow joint rehabilitation brace, characterized by: It comprises a flexion-extension motion unit (1) and a rotation motion unit (2) connected to the flexion-extension motion unit; The flexion and extension motion unit (1) comprises an upper arm shaft (1-16) and an lower arm shaft (1-14) connected to each other. The front and rear ends of the upper arm shaft (1-16) are fixedly connected to the housing (1-2) and the rear housing (1-19) respectively through a first connecting bolt (1-5) and a second connecting bolt (1-24). The front end of the housing (1-2) is provided with an adjusting knob (1-2). The adjusting knob (1-2) is connected to one end of a screw shaft (1-7) through a self-lubricating sleeve (1-3) provided with a bearing hole in the housing (1-6) and a third connecting bolt (1-1). The other end of the screw shaft (1-7) is connected to a screw shaft nut (1-11). The screw shaft nut (1-11) is connected to the slide shaft (1-8) through a protrusion on the slide shaft (1-8). The slide shaft (1- 8) The spiral shaft nut (1-11) is connected to the spline shaft fixing member (1-9) and the spline shaft (1-12) through a key (1-10); the spline shaft fixing member (1-9) and the spline shaft (1-12) are connected; the boom shaft (1-16) is connected to the damper (1-18) through a fourth connecting bolt (1-25); the boom shaft (16) is connected to the boom bracket (1-17); a slider (1-23) is installed on the boom bracket (1-17); a thin-walled bearing (1-13) is arranged between the small arm shaft (1-14) and the big arm shaft (1-16); the small arm bracket (1-21) is connected to the small arm shaft (1-14); a slider (1-23) is installed on the small arm bracket (1-21); and fixing belts are arranged at intervals on the slider (1-23); The rotary motion unit (2) comprises a rotary fixed bracket (2-2), a hand side end cover (2-5) and an outer side end cover (2-8); one end of the rotary fixed bracket (2-2) is connected to a slider (1-23) on the forearm bracket (1-21); the other end of the rotary fixed bracket (2-2) is connected to the outer side end cover (2-8) via a rotary shaft (2-9); the other end of the rotary shaft (2-9) is connected to the hand side end cover (2-5); a first bearing (2-6) and a second bearing (2-7) are respectively provided between the hand side end cover (2-5) and the outer side end cover (2-8) and the rotary shaft (2-9); and the outer side of the outer side end cover (2-8) is connected to a rotary cap (2-10) via a long pin (2-11).

2. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The upper arm shaft (2-26) and the lower arm shaft (1-14), the rotating cap (2-10) and the outer end cover (2-8), and the spiral shaft nut (1-11) and the slide shaft (1-8) are all connected by a mortise and tenon structure.

3. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: Four circular stepped holes are arranged at intervals on the housing (1-6), and the first connecting bolts (1-5) are inserted into the stepped holes to connect with the boom shaft (1-16). Four circular stepped holes are arranged at intervals on the circular protrusion of the housing (1-6), and the stepped holes are connected with the chute shaft (1-8) via fifth connecting bolts (1-4).

4. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The slide shaft (1-8) is provided with four rectangular keyways and four rectangular protrusions, and the spiral shaft nut (1-11), the spline shaft fixing member (1-9) and the spline shaft (1-12) are connected via a key (1-10).

5. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The front side of the boom shaft (1-16) is provided with three circular stepped holes, and the sixth connecting bolts (1-15) are passed through the stepped holes to connect with the boom bracket (1-17); the rear side of the boom shaft (1-16) is provided with two circular through holes, and the fourth connecting bolts (1-25) are passed through the circular through holes to connect with the damper (1-18); the rear side of the boom shaft (1-16) is provided with three circular through holes, and the second connecting bolts (1-24) are passed through the circular through holes to connect with the rear shell (1-19).

6. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The front end of the slider (1-23) is provided with a rectangular through hole for connecting with the upper arm bracket (1-17) / the lower arm bracket (1-21) and sliding on the upper arm bracket (1-17) / the lower arm bracket (1-21); a threaded hole is provided in the middle of the rectangular through hole of the slider (1-23) and is connected to the upper arm bracket (1-17) / the lower arm bracket (1-21) via a seventh connecting bolt (1-22); and two rectangular grooves are provided at the end of the slider (1-23), and fixing belts are installed in the rectangular grooves.

7. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The rotating fixed bracket (2-2) is provided with a threaded hole, which is connected to the slider (1-23) via an eighth connecting bolt (2-1); a rectangular hole is provided on the end surface of the rotating fixed bracket (2-2) for connecting to the outer end cover (2-8) and allowing the outer end cover (2-8) to slide therein; and six threaded holes are provided on the upper portion of the rotating fixed bracket (2-2), which is connected to the outer end cover (2-8) via a ninth connecting bolt (2-3).

8. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The rotating cap (2-10) is provided with a circular through hole, the rotating shaft (2-9) is provided with two circular through holes, and the circular protrusion of the hand side end cover (2-5) is provided with a circular through hole, which are respectively connected by a long pin (2-11) and a short pin (2-4).

9. The adjustable elbow joint activity rehabilitation brace according to claim 1, characterized in that: The rehabilitation brace has three modes: elbow joint non-resistance training, elbow joint resistance training and elbow joint fixed rotation. (a) Elbow joint resistance-free training: After the slider (1-23) is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support (1-21) with a fixing belt, and the patient's upper arm is fixed to the upper arm support (1-17) with a fixing belt. The adjusting knob (1-2) is rotated to make the spiral shaft (11-7) drive the spiral shaft nut (1-11) to move, so that the spline shaft (1-12) moves to a position where it is not engaged with the rotating gear of the forearm shaft (1-14) and the rotating gear of the upper arm shaft (1-16). The rehabilitation brace is adjusted to the active rehabilitation training mode, and the user completes the resistance-free elbow joint flexion and extension movement by his own arm strength. (b) Elbow joint resistance training: After the slider (1-23) is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support (1-21) with a fixing belt, and the patient's upper arm is fixed to the upper arm support (1-17) with a fixing belt. The adjustment knob (1-2) is rotated to make the spiral shaft (11-7) drive the spiral shaft nut (1-11) to move, so that the spline shaft (1-12) moves to a position that meshes with the rotating gear of the forearm shaft (1-16). The rehabilitation brace is adjusted to a resistance rehabilitation training mode, and the user overcomes the resistance of the damper (1-18) with his own arm strength to complete the elbow flexion and extension movement; (c) Elbow joint fixed rotation: After the slider (1-23) is adjusted to a comfortable position for the patient, the patient's forearm is fixed to the forearm support (1-21) with a fixing belt, and the patient's upper arm is fixed to the upper arm support (1-17) with a fixing belt. When the elbow joint moves to the appropriate position, the adjustment knob (1-2) is rotated to make the spiral shaft (1-7) drive the spiral shaft nut (1-11) to move, so that the spline shaft (1-12) moves to a position where it is simultaneously engaged with the rotating gear of the forearm shaft (1-16) and the rotating gear of the upper arm shaft (1-16). The rehabilitation brace is adjusted to the fixed mode to fix the position of the elbow joint support, thereby fixing the position of the elbow joint. At this time, the patient holds the hand-side end cover (2-5) and rotates the rotating cap (2-10) to make the rotating shaft (2-9) drive the hand-side end cover (2-5) to rotate, thereby driving the elbow joint to complete passive rotation movement.

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