Shoulder joint exerciser

Abstract

The present application relates to a kind of shoulder joint trainers, belong to medical instrument technical field, including shoulder ladder and auxiliary arm, one end of auxiliary arm is slidably arranged on the side wall of shoulder ladder, the other end of auxiliary arm is detachably worn on the upper arm of patient's arm, patient's arm is straight and extends in front of shoulder ladder, the palm surface of patient is in contact with the front end surface of shoulder ladder, and moves up and down along the setting direction of shoulder ladder, auxiliary arm slides on the side wall of shoulder ladder following the swing of the upper arm of patient's arm, auxiliary arm has brake function, auxiliary arm can be locked or release its sliding fit relationship with shoulder ladder by brake function, by being provided with auxiliary arm, when the upper limb of patient occurs shoulder weakness condition during the activity training of shoulder joint using shoulder ladder, auxiliary arm will adopt brake function, lock in the position of current shoulder ladder, realize that auxiliary arm holds patient's shoulder joint unchanged.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a shoulder joint trainer. Background Technology

[0002] A shoulder ladder is a medical device that trains shoulder joint range of motion by allowing the fingers to climb the ladder. When using a shoulder ladder, the fingers move up or down the ladder teeth to gradually increase the range of motion of the shoulder joint, serving as a rehabilitative exercise for shoulder joint movement disorders. The shoulder ladder can be practiced with alternating hands, gradually improving the flexibility and coordination of the finger system's active movements, while also increasing head lifting and upward eye movement.

[0003] For example, the utility model patent with patent authorization announcement number CN201537351U includes a matching fixing frame and a lifting tube. The fixing frame is fixed to a wall or metal component and has a square tube hole. The lifting tube passes through the square tube hole of the fixing frame and is fixed to the fixing frame by fastening screws. A ladder frame is fixedly connected to the lifting tube, and a toothed plate is fixedly installed on the outer surface of the ladder frame. This shoulder ladder for rehabilitation training is used to help patients with joint mobility disorders to perform restorative training. It has a simple structure, is convenient and safe to use, and has significant training effects.

[0004] Based on the search of patent grant announcement numbers and considering their shortcomings, the following was found:

[0005] When patients with shoulder joint injuries use a shoulder ladder to exercise their shoulder joints, they gradually increase the range of motion by moving their fingers up or down along the end of the ladder. This is intended to provide rehabilitation training for shoulder joint movement disorders. However, in actual training, when the patient's fingers move up to the highest height they can reach along the ladder, it can easily cause pain and weakness in the shoulder joint. Consequently, the patient's upper limb may drop rapidly due to weakness, further aggravating the strain on the soft tissues around the already damaged shoulder joint. Summary of the Invention

[0006] To address the issue of shoulder joint injury patients using shoulder ladders for rehabilitation training, where patients gradually increase their shoulder joint range of motion by moving their fingers up or down along the ladder's end, this invention provides a shoulder joint trainer. However, during actual training, when the patient's fingers reach the highest achievable height along the ladder, it easily causes pain and weakness in the shoulder joint. Consequently, the patient's upper limb may drop rapidly due to weakness, further exacerbating the problem of straining the soft tissues around the already damaged shoulder joint.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A shoulder joint trainer includes a shoulder ladder and an auxiliary arm. One end of the auxiliary arm is slidably mounted on the side wall of the shoulder ladder, and the other end of the auxiliary arm is detachably worn on the upper arm of the patient's arm. The patient's arm extends straight out in front of the shoulder ladder, with the patient's palm in contact with the front end of the shoulder ladder and moving up and down along the direction of the shoulder ladder. The auxiliary arm slides on the side wall of the shoulder ladder following the swing of the patient's upper arm. The auxiliary arm has a braking function, which can lock or release its sliding engagement with the shoulder ladder.

[0009] As a preferred embodiment of the present invention, the shoulder ladder includes a vertical plate, a curved plate, and a plurality of trapezoidal teeth. The curved plate is a quarter of a circular ring. The bottom surface of the curved plate and the top surface of the vertical plate are fitted together. The front end face of the curved plate and the front end face of the vertical plate together form a sliding surface. The plurality of trapezoidal teeth are equally spaced on the sliding surface along the setting direction of the sliding surface.

[0010] As a preferred embodiment of the present invention, the auxiliary arm includes a sliding unit, an auxiliary frame, and an adjusting pad. The auxiliary frame has a mounting slot in the middle, and the adjusting pad is disposed in the mounting slot. The patient's upper arm is fitted with the auxiliary frame by engaging with the mounting slot. The sidewalls of the vertical plate and the curved plate together form a sliding slot. The direction of the sliding slot is the same as the direction of the shoulder ladder. The sliding unit is slidably disposed on the sliding slot, and one end of the auxiliary frame is connected to the sliding unit.

[0011] As a preferred embodiment of the present invention, the sliding unit includes a sliding block, a sliding wheel, and a sliding motor. The sliding block is slidably disposed on the sliding groove and has a rotating groove. The sliding wheel is rotatably disposed in the rotating groove, and the outer side wall of the sliding wheel is in contact with the side wall of the sliding groove. The sliding motor is disposed on the sliding block, and the output end of the sliding motor is coaxially connected to the sliding wheel. The sliding block is hinged to one end of the auxiliary frame.

[0012] As a preferred embodiment of the present invention, the auxiliary arm further includes two pressure modules and a control chip. The two pressure modules are both disposed within the adjustment pad and are located at the upper and lower ends of the mounting slot, respectively, for detecting the force between the upper part of the patient's upper arm and the auxiliary frame and the force between the lower part of the patient's upper arm and the auxiliary frame. The control chip is communicatively connected to the two pressure modules and the sliding motor, and controls the rotation direction of the sliding motor based on the data transmitted back from the two pressure modules.

[0013] As a preferred embodiment of the present invention, the auxiliary arm further includes several detection modules, which correspond one-to-one with several trapezoidal teeth. Each detection module is disposed in the corresponding trapezoidal tooth. The detection module is used to detect whether the patient's palm is pressing on the trapezoidal tooth. The detection module is communicatively connected to the control chip.

[0014] As a preferred embodiment of the present invention, the auxiliary arm further includes a telescopic unit, which includes a telescopic housing, a telescopic rod, and a rotating rod. One end of the telescopic rod is connected to the end of the auxiliary frame near the sliding unit. The sliding block has a hinge slot, the central axis of which is perpendicular to the surface of the sliding block. One end of the rotating rod is rotatably mounted on the hinge slot, and the other end of the rotating rod is connected to the telescopic housing. The telescopic housing has a telescopic slot inside, and the other end of the telescopic rod is slidably mounted within the telescopic slot.

[0015] As a preferred embodiment of the present invention, the auxiliary arm further includes a braking unit, the braking unit further includes a braking cylinder and a braking block, the center of the sliding block is provided with a braking groove, the braking groove and the sliding groove are interconnected, the braking block is slidably disposed in the braking groove, the braking cylinder is disposed on the sliding block, the output end of the braking cylinder is interconnected with the braking block, and the braking block can lock or release its mutual contact with the sliding groove.

[0016] In a preferred embodiment of the present invention, the braking unit further includes a fixed plate, a pressing plate, a pressing block, a hinge rod, a connecting rod, and a return spring. The fixed plate is disposed on the telescopic housing. A pressing slot is formed at one end of the telescopic housing near the auxiliary frame. The pressing slot communicates with the telescopic slot. The pressing block is slidably disposed within the pressing slot. The middle end of the hinge rod is rotatably hinged to the fixed plate. One end of the pressing block extending outside the pressing slot is slidably hinged to one end of the hinge rod along its axial direction. The middle end of the connecting rod is rotatably connected to the fixed plate. The plate is hinged, and the connecting rod is located between the brake cylinder and the hinge rod. One end of the connecting rod near the hinge rod is slidably hinged to the other end of the hinge rod along the axis of the hinge rod. The two ends of the return spring are respectively connected to the end of the hinge rod near the connecting rod and to the telescopic housing. The pressing plate is connected to the output end of the brake cylinder. The pressing plate is located on top of the sliding block. The area of ​​the pressing plate projected onto the top surface of the telescopic housing coincides with the end of the connecting rod near the brake cylinder. The pressing block can lock or release its abutment relationship with the telescopic rod.

[0017] As a preferred embodiment of the present invention, the braking unit further includes an abutment block, an abutment rod, and a drive rod. The sliding block is also provided with an abutment slot, which is interconnected with the hinge slot and the braking slot. The abutment block is slidably disposed in the abutment slot, and the abutment rod is slidably disposed in the abutment slot. One end of the abutment rod is connected to the abutment block, and the other end of the abutment rod extends into the braking slot. The two ends of the drive rod are hinged to the output end of the brake cylinder and the other end of the abutment rod, respectively. The abutment block can lock or release its abutment relationship with the rotating rod.

[0018] The beneficial effects of this invention are as follows:

[0019] By incorporating an auxiliary arm, when a patient experiences shoulder weakness during shoulder joint mobility training using a shoulder ladder, the auxiliary arm engages a braking function, locking itself in the current position of the ladder. This ensures the auxiliary arm supports the patient's shoulder joint, preventing the upper limb from suddenly dropping due to weakness, which could further strain the already damaged soft tissues around the shoulder joint. This addresses the issue of patients with shoulder injuries using shoulder ladders to gradually increase their shoulder joint range of motion by moving their fingers up or down along the ladder's edge. However, in practice, when the patient's fingers reach the highest achievable height, they often experience shoulder pain and weakness, leading to a sudden drop of the upper limb and further straining the surrounding soft tissues. Attached Figure Description

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of a shoulder joint trainer according to the present invention;

[0022] Figure 2 This is a top view schematic diagram of the sliding unit of a shoulder joint trainer according to the present invention;

[0023] Figure 3 This is a top view schematic diagram of the auxiliary frame of a shoulder joint trainer according to the present invention;

[0024] Figure 4 This is a schematic diagram of the internal structure of the telescopic unit of a shoulder joint trainer according to the present invention;

[0025] Figure 5 This is a schematic diagram of the internal mechanism of the braking unit of a shoulder joint trainer according to the present invention;

[0026] Figure 6 This is a bottom view schematic diagram of the braking unit of a shoulder joint trainer according to the present invention;

[0027] Figure 7 This is a connection diagram of the control chip for a shoulder joint trainer according to the present invention.

[0028] Explanation of main symbols

[0029] In the diagram: 1. Shoulder ladder; 101. Vertical plate; 102. Curved plate; 103. Trapezoidal teeth; 2. Auxiliary arm; 3. Sliding unit; 301. Sliding block; 302. Sliding wheel; 303. Sliding motor; 4. Auxiliary frame; 5. Adjusting pad; 6. Pressure module; 7. Control chip; 8. Detection module; 9. Telescopic unit; 901. Telescopic housing; 902. Telescopic rod; 903. Rotating rod; 10. Braking unit; 1001. Braking cylinder; 1002. Braking block; 1003. Fixing plate; 1004. Pressing plate; 1005. Pressing block; 1006. Hinge rod; 1007. Connecting rod; 1008. Return spring; 1009. Abutment block; 1010. Abutment rod; 1011. Drive rod. Detailed Implementation

[0030] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0031] Please see Figures 1-7This embodiment provides a shoulder joint trainer, including a shoulder ladder 1 and an auxiliary arm 2. One end of the auxiliary arm 2 is slidably mounted on the side wall of the shoulder ladder 1, and the other end is detachably worn on the patient's upper arm. The patient's arm extends straight out in front of the shoulder ladder 1, with the patient's palm in contact with the front end of the shoulder ladder 1, and moves up and down along the direction of the ladder. The auxiliary arm 2 slides on the side wall of the shoulder ladder 1 following the swing of the patient's upper arm. The auxiliary arm 2 has a braking function, which can lock or release its sliding engagement with the shoulder ladder 1. By providing the auxiliary arm 2, when the patient is using the shoulder ladder 1 for shoulder joint activity training, if the patient experiences shoulder weakness, the auxiliary arm 2 will engage the braking function. Locked in the current position of shoulder ladder 1, the auxiliary arm 2 keeps the patient's shoulder joint supported and stable, preventing the patient's upper limb from dropping suddenly due to shoulder weakness, which could further aggravate the strain on the soft tissues around the already damaged shoulder joint. This solves the problem of patients with shoulder joint injuries using shoulder ladder 1 to gradually increase the range of motion of the shoulder joint by moving their fingers up or down along the end face of shoulder ladder 1 to perform rehabilitation training for shoulder joint movement disorders. However, in actual training, when the patient's fingers move along shoulder ladder 1 to the highest height they can reach, it is easy to cause pain and weakness in the patient's shoulder joint, which in turn causes the patient's upper limb to drop suddenly due to weakness, further aggravating the strain on the soft tissues around the already damaged shoulder joint.

[0032] Specifically, the shoulder ladder 1 of this scheme includes a vertical plate 101, a curved plate 102 and a number of trapezoidal teeth 103. The curved plate 102 is a quarter of a ring. The bottom surface of the curved plate 102 and the top surface of the vertical plate 101 are fitted together. The front end surface of the curved plate 102 and the front end surface of the vertical plate 101 together form a sliding surface. The number of trapezoidal teeth 103 are evenly spaced on the sliding surface along the setting direction of the sliding surface. It should be noted that the trapezoidal teeth 103 in this plan are intended for use by patients during shoulder joint training. When the patient experiences weakness in the shoulder joint, they can place their fingers on the trapezoidal teeth 103 to prevent the upper limb from falling abruptly due to weakness. However, during actual shoulder joint training, the patient's palm should only gently slide against the trapezoidal teeth 103, and should not place their fingers on them. Otherwise, the patient will only use their fingers to climb upwards, thereby flexing and raising their shoulder joint, without truly exercising the muscles around the shoulder joint. This only passively improves the range of motion of the shoulder joint, without actively improving it. Therefore, the rehabilitation effect of training with the fingers placed on the trapezoidal teeth 103 is generally limited.

[0033] Specifically, the auxiliary arm 2 of this solution includes a sliding unit 3, an auxiliary frame 4, and an adjusting pad 5. The auxiliary frame 4 has a mounting slot in the middle, and the adjusting pad 5 is placed inside the mounting slot. The patient's upper arm, through cooperation with the mounting slot, allows the auxiliary frame 4 to be worn on the patient's upper arm. The side walls of the vertical plate 101 and the curved plate 102 together form a sliding slot, the direction of which is the same as the direction of the shoulder ladder 1. The sliding unit 3 is slidably mounted on the sliding slot, and one end of the auxiliary frame 4 is connected to the sliding unit 3. By incorporating an auxiliary frame 4, which engages with the patient's upper arm via mounting slots, the auxiliary frame 4 is worn on the patient's upper arm. When the patient's upper arm moves upward, the force is transmitted through the auxiliary frame 4 to the sliding unit 3, causing the sliding unit 3 to move upward along the sliding slot. Conversely, when the patient's upper arm moves downward, the force is transmitted through the auxiliary frame 4 to the sliding unit 3, causing the sliding unit 3 to move downward along the sliding slot. Furthermore, this design actively improves the muscles and range of motion around the shoulder joint, thus promoting shoulder joint rehabilitation. The adjustment pad 5, made of flexible material, allows the auxiliary frame 4 to adapt to patients with different arm circumferences. It should also be noted that the auxiliary frame 4 is hinged to the telescopic unit 9 in the subsequent structure, allowing the auxiliary frame 4 to be adjusted for proper wear on the patient's upper arm.

[0034] According to the above embodiment, there is a situation where the patient's shoulder joint is injured, resulting in the patient not having enough strength to push the sliding unit 3 to move. Therefore, to solve this problem, the sliding unit 3 in this solution includes a sliding block 301, a sliding wheel 302, and a sliding motor 303. The sliding block 301 is slidably disposed on a sliding groove, and the sliding block 301 has a rotating groove. The sliding wheel 302 is rotatably disposed in the rotating groove, and the outer side wall of the sliding wheel 302 is in contact with the side wall of the sliding groove. The sliding motor 303 is disposed on the sliding block 301, and the output end of the sliding motor 303 is coaxially connected to the sliding wheel 302. The sliding block 301 is hinged to one end of the auxiliary frame 4. There is a sliding motor 303. When the sliding motor 303 receives a forward rotation command, it starts working, controlling the sliding wheel 302 to rotate forward, thereby driving the sliding block 301 to move towards the top of the sliding groove. When the sliding motor 303 receives a reverse rotation command, it starts working, controlling the sliding wheel 302 to rotate in reverse, thereby driving the sliding block 301 to move towards the bottom of the sliding groove. The sliding motor 303 is designed to act as an assistive device, helping patients with less strength to slide the sliding block 301. This design allows the patient's shoulder joint to move while actively improving the muscles around the shoulder joint, which is more conducive to the rehabilitation of the patient's shoulder joint.

[0035] According to the above embodiment, the sliding motor 303 only starts working after receiving an instruction. To ensure that the instruction received by the sliding motor 303 is related to the patient's shoulder joint lifting or lowering movements, the auxiliary arm 2 of this solution also includes two pressure modules 6 and a control chip 7. Both pressure modules 6 are located within the adjusting pad 5, at the upper and lower ends of the mounting slot, respectively, and are used to detect the force between the upper part of the patient's upper arm and the auxiliary frame 4, and the force between the lower part of the patient's upper arm and the auxiliary frame 4. The control chip 7 is communicatively connected to both pressure modules 6 and the sliding motor 303, and controls the rotation direction of the sliding motor 303 based on the data transmitted back from the two pressure modules 6. It is worth noting that the pressure module 6 located at the upper end of the mounting slot detects a value of F1, and the pressure module 6 located at the lower end of the mounting slot detects a value of F2. When the patient's shoulder joint is raised upwards, the upper arm of the patient's arm applies a force to the pressure module 6 located at the upper end of the mounting slot. At this time, F1 > F2. After receiving the data from the two pressure modules 6, the control chip 7 controls the sliding motor 303 to rotate forward. Similarly, when the patient's shoulder joint is lowered downwards, the upper arm of the patient's arm applies a force to the pressure module 6 located at the lower end of the mounting slot. At this time, F2 > F1. After receiving the data from the two pressure modules 6, the control chip 7 controls the sliding motor 303 to rotate in reverse. It is worth noting that the auxiliary frame 4 in this solution is also equipped with a position sensor, which is used to detect changes in the position of the auxiliary frame 4. Generally speaking, when the patient controls the upper arm to apply force to the auxiliary frame 4, the movement speed of the auxiliary frame 4 is within a certain range, that is, the position change of the auxiliary frame 4 is within a certain range within a certain time. This range is preset as a threshold within the position sensor. When the patient is performing shoulder joint rehabilitation training, the patient's upper limb will drop rapidly due to weakness. At this time, the position sensor detects that the position change speed of the auxiliary frame 4 exceeds the preset threshold. The position sensor will communicate with the control chip 7, and then the control chip 7 will control the sliding unit 3 to use the braking function to prevent the auxiliary frame 4 from continuing to slide, ensuring that the patient's shoulder joint no longer moves.

[0036] Furthermore, according to the above embodiments, in order to prevent patients from pressing their fingers on the trapezoidal teeth 103 during rehabilitation training, thereby causing their shoulder joints to flex and lift, the auxiliary arm 2 of this solution also includes several detection modules 8. The detection modules 8 are matched one-to-one with the trapezoidal teeth 103. Each detection module 8 is set in the corresponding trapezoidal tooth 103. The detection module 8 is used to detect whether the patient's palm is pressing on the trapezoidal tooth 103. The detection module 8 is communicatively connected to the control chip 7. When the patient's fingers press on the trapezoidal tooth 103, the corresponding detection module 8 can detect the pressure value, and then the detection module 8 transmits the signal to the control chip 7. The control chip 7 will issue an alarm, and medical personnel will check whether the patient's rehabilitation training is standardized.

[0037] Due to the design shape of the shoulder ladder 1 in this scheme, the distance between the sliding block 301 and the auxiliary frame 4 is constantly changing. In order to ensure that the sliding of the sliding block 301 and the swing of the auxiliary frame 4 are not affected, the auxiliary arm 2 in this scheme also includes a telescopic unit 9. The telescopic unit 9 includes a telescopic housing 901, a telescopic rod 902 and a rotating rod 903. One end of the telescopic rod 902 is connected to the end of the auxiliary frame 4 near the sliding unit 3. The sliding block 301 has a hinge slot. The central axis of the hinge slot is perpendicular to the surface of the sliding block 301, that is, the central axis of the hinge slot is perpendicular to the end face of the sliding slot. One end of the rotating rod 903 is rotatably set on the hinge slot. The other end of the rotating rod 903 is connected to the telescopic housing 901. The telescopic housing 901 has a telescopic slot inside. The other end of the telescopic rod 902 is slidably set in the telescopic slot. The telescopic rod 902 expands and contracts within the telescopic housing 901 to adapt to the constantly changing distance between the sliding block 301 and the auxiliary frame 4.

[0038] According to the above embodiment, in order to realize the braking function of the sliding unit 3, the auxiliary arm 2 of this solution also includes a braking unit 10. The braking unit 10 also includes a braking cylinder 1001 and a braking block 1002. The center of the sliding block 301 is provided with a braking slot, which is connected to the sliding slot. The braking block 1002 is slidably disposed in the braking slot. The braking cylinder 1001 is disposed on the sliding block 301. The output end of the braking cylinder 1001 is connected to the braking block 1002. The braking block 1002 can lock or release its mutual contact with the sliding slot. The control chip 7 is communicatively connected to the braking cylinder 1001. When the control chip 7 drives the braking cylinder 1001 to work, the output end of the braking cylinder 1001 moves toward the bottom of the braking slot until the braking block 1002 is attached to the sliding slot, thereby realizing the braking function of the sliding block 301.

[0039] Furthermore, it is worth noting that, according to the above embodiments, the braking function of this solution requires ensuring that the auxiliary frame 4 is also in a braking state, meaning that the auxiliary frame 4 cannot continue to change position. Therefore, in this solution, while the sliding block 301 is in a braking state, the telescopic unit 9 needs to be in a non-telescopic state. Based on this, the braking unit 10 of this solution also includes a fixing plate 1003, a pressing plate 1004, a pressing block 1005, a hinge rod 1006, a connecting rod 1007, and a return spring 1008. The fixing plate 1003 is disposed on the telescopic housing 901. A pressing slot is provided at one end of the telescopic housing 901 near the auxiliary frame 4. The pressing slot is connected to the telescopic slot. The pressing block 1005 is slidably disposed in the pressing slot. The middle end of the hinge rod 1006 is rotatably hinged to the fixing plate 1003. One end of the pressing block 1005 extending out of the pressing slot is slidably hinged to one end of the hinge rod 1006 along the axial direction of the hinge rod 1006. The middle end of the connecting rod 1007 is rotatably hinged to the fixing plate 1003. The connecting rod 1007 is located between the brake cylinder 1001 and the hinge rod 1006. One end of the connecting rod 1007 near the hinge rod 1006 can be slidably hinged to the other end of the hinge rod 1006 along the axial direction of the hinge rod 1006. The two ends of the return spring 1008 are respectively connected to the end of the hinge rod 1006 near the connecting rod 1007 and to the telescopic housing 901. The pressing plate 1004 is connected to the output end of the brake cylinder 1001. The pressing plate 1004 is located on the top outside the sliding block 301. The area of ​​the pressing plate 1004 projected onto the top surface of the telescopic housing 901 always coincides with the end of the connecting rod 1007 near the brake cylinder 1001. The pressing block 1005 can lock or release its abutment relationship with the telescopic rod 902. With this configuration, when the output end of the brake cylinder 1001 controls the brake block 1002 to engage with the sliding groove, the output end of the brake cylinder 1001 also controls the pressing plate 1004 to press one end of the connecting rod 1007, causing the other end of the connecting rod 1007 to move upwards. This, in turn, drives the hinge rod 1006, which is hinged to the other end of the connecting rod 1007, to move upwards, ultimately controlling the other end of the hinge rod 1006 to move downwards. This achieves the abutting engagement between the pressing block 1005 and the telescopic rod 902, thereby restricting the telescopic rod 902 from sliding within the telescopic housing 901. It is worth noting that when the output end of the brake cylinder 1001 resets, the pressing block 1005 also resets, releasing its abutting engagement with the telescopic rod 902.

[0040] Furthermore, when the sliding block 301 of this solution is in a braking state, the rotatable state between the auxiliary frame 4 and the sliding block 301 needs to be converted to a non-rotatable state. Based on this, the braking unit 10 of this solution also includes an abutment block 1009, an abutment rod 1010, and a drive rod 1011. The sliding block 301 is also provided with an abutment slot, which is connected to the hinge slot and the brake slot respectively. The abutment block 1009 is slidably disposed in the abutment slot, and the abutment rod 1010 is slidably disposed in the abutment slot. One end of the abutment rod 1010 is connected to the abutment block 1009, and the other end of the abutment rod 1010 extends into the brake slot. The two ends of the drive rod 1011 are hinged to the output end of the brake cylinder 1001 and the other end of the abutment rod 1010 respectively. 009 can lock or release its abutment relationship with the rotating rod 903. With this setting, when the output end of the brake cylinder 1001 controls the brake block 1002 to abut against the sliding groove, the output end of the brake cylinder 1001 will also control the drive rod 1011 to rotate, so that the drive rod 1011 changes from its original inclined state to a straight state that is horizontal to the central axis of the abutment groove. Then the drive rod 1011 will drive the abutment rod 1010 to slide along the abutment groove until the abutment block 1009 abuts against the rotating rod 903, restricting the rotation of the rotating rod 903. It is worth noting that when the output end of the brake cylinder 1001 is reset, the abutment block 1009 is also reset and its abutment relationship with the rotating rod 903 is released.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A shoulder joint training device, characterized in that: The device includes a shoulder ladder and an auxiliary arm. One end of the auxiliary arm is slidably mounted on the side wall of the shoulder ladder, and the other end is detachably worn on the upper arm of the patient's arm. The patient's arm extends straight out in front of the shoulder ladder, with the patient's palm in contact with the front end of the shoulder ladder, and moves up and down along the direction of the shoulder ladder. The auxiliary arm slides on the side wall of the shoulder ladder as the patient's upper arm swings. The auxiliary arm has a braking function, which can lock or release its sliding engagement with the shoulder ladder. The shoulder ladder includes a vertical plate, a curved plate, and several trapezoidal teeth. The curved plate is a quarter of a circular ring. The bottom surface of the curved plate and the top surface of the vertical plate are fitted together. The front end face of the curved plate and the front end face of the vertical plate together form a sliding surface. Several trapezoidal teeth are evenly spaced on the sliding surface along the setting direction of the sliding surface. The auxiliary arm includes an auxiliary frame and a sliding unit. The side walls of the vertical plate and the curved plate together form a sliding groove. The sliding groove is set in the same direction as the shoulder ladder. The sliding unit is slidably set on the sliding groove. One end of the auxiliary frame is connected to the sliding unit. The sliding unit includes a sliding block, a sliding wheel, and a sliding motor. The sliding block is slidably disposed on the sliding slot and has a rotating groove. The sliding wheel is rotatably disposed in the rotating groove, and the outer side wall of the sliding wheel is in contact with the side wall of the sliding slot. The sliding motor is disposed on the sliding block, and the output end of the sliding motor is coaxially connected to the sliding wheel. The sliding block is hinged to one end of the auxiliary frame. The sliding motor can rotate in both directions and provide assistance to the patient.

2. The shoulder joint trainer according to claim 1, characterized in that: The auxiliary arm also includes an adjustment pad. The auxiliary frame has a mounting slot in the middle, and the adjustment pad is placed in the mounting slot. The patient's upper arm is fitted with the mounting slot to allow the auxiliary frame to be worn on the patient's upper arm.

3. A shoulder joint trainer according to claim 2, characterized in that: The auxiliary arm also includes two pressure modules and a control chip. The two pressure modules are both located inside the adjustment pad, at the upper and lower ends of the mounting slot, respectively, and are used to detect the force between the upper part of the patient's upper arm and the auxiliary frame and the force between the lower part of the patient's upper arm and the auxiliary frame. The control chip is communicatively connected to the two pressure modules and the sliding motor, and controls the rotation direction of the sliding motor based on the data transmitted back from the two pressure modules.

4. A shoulder joint trainer according to claim 3, characterized in that: The auxiliary arm also includes several detection modules, each corresponding to a number of trapezoidal teeth. Each detection module is located within a corresponding trapezoidal tooth. The detection module is used to detect whether the patient's palm is pressing on the trapezoidal tooth. The detection module is communicatively connected to the control chip.

5. A shoulder joint trainer according to claim 1, characterized in that: The auxiliary arm also includes a telescopic unit, which includes a telescopic housing, a telescopic rod, and a rotating rod. One end of the telescopic rod is connected to the end of the auxiliary frame near the sliding unit. The sliding block has a hinge slot, the central axis of which is perpendicular to the surface of the sliding block. One end of the rotating rod is rotatably mounted on the hinge slot, and the other end is connected to the telescopic housing. The telescopic housing has a telescopic slot inside, and the other end of the telescopic rod is slidably mounted in the telescopic slot.

6. A shoulder joint trainer according to claim 5, characterized in that: The auxiliary arm also includes a braking unit, which further includes a brake cylinder and a brake block. A brake slot is formed through the center of the sliding block, and the brake slot is connected to the sliding slot. The brake block is slidably disposed in the brake slot. The brake cylinder is disposed on the sliding block, and the output end of the brake cylinder is connected to the brake block. The brake block can lock or release its contact with the sliding slot.

7. A shoulder joint trainer according to claim 6, characterized in that: The braking unit further includes a fixed plate, a pressing plate, a pressing block, a hinge rod, a connecting rod, and a return spring. The fixed plate is disposed on the telescopic housing. A pressing slot is formed at one end of the telescopic housing near the auxiliary frame. The pressing slot communicates with the telescopic slot. The pressing block is slidably disposed within the pressing slot. The middle end of the hinge rod is rotatably hinged to the fixed plate. One end of the pressing block extending outside the pressing slot is slidably hinged to one end of the hinge rod along its axial direction. The middle end of the connecting rod is rotatably hinged to the fixed plate. The connecting rod is located between the brake cylinder and the hinge rod. One end of the connecting rod near the hinge rod is slidably hinged to the other end of the hinge rod along the axis of the hinge rod. The two ends of the return spring are respectively connected to the telescopic housing at the end of the hinge rod near the connecting rod. The pressing plate is connected to the output end of the brake cylinder. The pressing plate is located on top of the sliding block. The area of ​​the pressing plate projected onto the top surface of the telescopic housing coincides with the end of the connecting rod near the brake cylinder. The pressing block can lock or release its abutment relationship with the telescopic rod.

8. A shoulder joint trainer according to claim 7, characterized in that: The braking unit further includes an abutment block, an abutment rod, and a drive rod. The sliding block is also provided with an abutment slot, which is connected to the hinge slot and the brake slot, respectively. The abutment block is slidably disposed in the abutment slot, and the abutment rod is slidably disposed in the abutment slot. One end of the abutment rod is connected to the abutment block, and the other end of the abutment rod extends into the brake slot. The two ends of the drive rod are hinged to the output end of the brake cylinder and the other end of the abutment rod, respectively. The abutment block can lock or release its abutment relationship with the rotating rod.

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