Rehabilitation training device for scapulohumeral periarthritis

Abstract

The utility model discloses a scapulohumeral periarthritis rehabilitation training device which comprises a main body frame, a handle, a mooring rope, a chain, a two-way chain wheel assembly and a wheel carrier, the wheel carrier is arranged below the top of the main body frame, the two-way chain wheel assembly is arranged in the wheel carrier, and the chain penetrates through the two-way chain wheel assembly and can drive a chain wheel to rotate in two directions. The two ends of the chain are respectively connected with a cable, the tail ends of the two cables are connected with handles, and a bidirectional ratchet wheel structure is arranged in the bidirectional chain wheel assembly. Through the arrangement of the bidirectional chain wheel assembly with the bidirectional ratchet wheel structure, the tension meter, the graduated scale, the damping fin and other structures, fixation at any height within the design range and fixation training of gradually increasing the height can be achieved in the training process, and the handle cannot be loosened in the training process; the pulling damping is adjustable, and the rehabilitation training device can adapt to rehabilitation training of patients with different strengths; the tension and height in the training process can be observed in real time, and the effects of different training periods can be effectively mastered.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a scapulohumeral periarthritis rehabilitation training device. Background Art

[0002] The full name of frozen shoulder is periarthritis of the shoulder. It is a chronic aseptic inflammation of the joint capsule and soft tissues around the joint caused by injury and degeneration of soft tissues such as muscles, ligaments, tendons, bursae, and joint capsules around the shoulder joint. It is a common disease with shoulder joint pain and difficulty in movement as the main symptoms. If not treated in time, the adhesion of surrounding tissues will be aggravated under the infiltration of inflammation, leading to aggravated limitation of shoulder joint function.

[0003] At present, there are mainly drug therapy and physical therapy in clinical practice, but taking drugs can only temporarily relieve pain, and the patient's shoulder joint limitation cannot be effectively relieved, and it is easy to relapse after stopping the drug; physical therapy is to accelerate the absorption of inflammation around the joint with the help of heat, electricity, light, magnetism and other methods, or to use external force to effectively train the function of the affected shoulder joint; if the patient adopts physical therapy and insists on exercising, it will have a good effect on the treatment of frozen shoulder. Due to the long-term influence of inflammatory factors, the shoulder joint is particularly sensitive to pain, and improper joint angles or sudden external forces will cause unbearable pain to patients; due to the adhesion of surrounding tissues, the shoulder joint must be subjected to greater external force to achieve functional activities such as abduction, forward lifting, and back lifting. Therefore, in order to effectively restore the shoulder joint, the traction force must be gradually increased so that the adhesion is slowly loosened within the tolerable pain range without causing additional damage.

[0004] The existing wheel-type auxiliary treatment device for frozen shoulder mainly loosens the adhesion tissue of the affected shoulder joint by pulling the patient's healthy limb, but it is unable to increase the pulling force gradually and slowly, and the pulling force cannot be continuously fixed. If the pulling force suddenly increases or decreases, it will aggravate the shoulder joint injury. In addition, the existing auxiliary device can only evaluate the rehabilitation training effect by the naked eye through the upper arm lifting height, and cannot accurately quantify the rehabilitation training. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to provide a scapulohumeral periarthritis rehabilitation training device which can gradually increase the stretching height and continuously fix the tension.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A scapulohumeral periarthritis rehabilitation training device comprises a main frame, a handle, a cable, a chain, a bidirectional sprocket assembly and a wheel frame, wherein the wheel frame is arranged below the top of the main frame, and a bidirectional sprocket assembly is arranged in the wheel frame, the chain passes through the bidirectional sprocket assembly and can drive the sprocket to rotate in both directions, the two ends of the chain are respectively connected to a section of cable, the ends of the two sections of cable are connected to the handle, and a bidirectional ratchet structure is arranged in the bidirectional sprocket assembly.

[0008] Preferably, the bidirectional ratchet structure includes a sprocket, a bearing, a sprocket shaft, a reversing gear, a paddle spring, a reversing paddle and a reversing cam; two reversing paddles are provided on the outer side of the reversing gear, and a paddle spring and a reversing cam are installed between the two reversing paddles.

[0009] Preferably, a damping structure is also provided in the bidirectional sprocket assembly, and the damping structure includes a damping wheel, a damping spring, a damping plate and an adjustment screw. The damping wheel is arranged on the sprocket, the damping spring is arranged on the guide rod of the damping plate, and the adjustment screw is used to adjust the distance between the damping plate and the damping wheel.

[0010] Preferably, the scapulohumeral periarthritis rehabilitation training device further comprises a dynamometer, and the dynamometer is arranged on the cable.

[0011] Preferably, the scapulohumeral periarthritis rehabilitation training device further comprises a bench, and the bench is arranged below the handle.

[0012] Preferably, the scapulohumeral periarthritis rehabilitation training device further comprises a top rotating mechanism, and the top rotating mechanism connects the main frame and the wheel frame.

[0013] Preferably, the top rotating mechanism includes a thrust bearing, a thrust bearing seat, a ball bearing seat, a deep groove ball bearing, a clamping nut and a top rotating shaft.

[0014] Preferably, the wheel frame is connected to the top rotating mechanism via a screw rod.

[0015] Preferably, the scapulohumeral periarthritis rehabilitation training device further comprises a scale arranged on the main frame.

[0016] Preferably, the main frame is welded from hollow polished stainless steel tubes.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] Compared with the existing technology, the utility model can realize the fixation of any height within the design range and the fixation training of gradually increasing the height by arranging the bidirectional sprocket assembly with a bidirectional ratchet structure, the dynamometer, the scale and the damping plate. The handle will not get loose during the training process. During training, the damping of the pull is adjustable, which can adapt to the rehabilitation training of patients with different strengths. It can adapt to the different sitting postures of the patients. The tension and height during the training process can be observed in real time, and the effects of different training cycles can be effectively grasped. In addition, the utility model is a complete set of scapulohumeral periarthritis rehabilitation training device, which no longer needs to rely on other hanging devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a scapulohumeral periarthritis rehabilitation training device;

[0021] Figure 2 It is a front view of the scapulohumeral periarthritis rehabilitation training device;

[0022] Figure 3 It is a side view of the scapulohumeral periarthritis rehabilitation training device;

[0023] Figure 4 is a partial cross-sectional view of a bidirectional sprocket assembly;

[0024] Figure 5 A partial enlargement of the sprocket Figure 1 ;

[0025] Figure 6 A partial enlargement of the sprocket Figure 2 ;

[0026] Figure 7 It is a structural schematic diagram of the top rotating mechanism.

[0027] Description of reference numerals:

[0028] 1. Bench; 2. Main frame; 3. Handle; 4. Cable; 5. Tension meter; 6. Chain; 7. Bidirectional sprocket assembly; 7-1. Sprocket; 7-2. Damping wheel; 7-3. Bearing; 7-4. Sprocket shaft; 7-5. Damping spring; 7-6. Damping plate; 7-7. Reversing gear; 7-8. Paddle spring; 7-9. Reversing paddle; 7-10. Reversing cam; 8. Wheel frame; 9. Screw; 10. Top rotating mechanism; 10-1. Thrust bearing; 10-2. Thrust bearing seat; 10-3. Ball bearing seat; 10-4. Deep groove ball bearing; 10-5. Locking nut; 10-6. Top rotating shaft. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] like Figure 1-Figure 3 As shown, a scapulohumeral periarthritis rehabilitation training device comprises a main frame 2, a handle 3, a cable 4, a chain 6, a bidirectional sprocket assembly 7 and a wheel frame 8, wherein the wheel frame 8 is arranged below the top of the main frame 2, and a bidirectional sprocket assembly 7 is arranged inside the wheel frame 8, wherein the chain 6 passes through the bidirectional sprocket assembly 7 and can drive the sprocket 7-1 to rotate bidirectionally, wherein a section of cable 4 is connected to each end of the two sections of cable 4, and a handle 3 is connected to the ends of the two sections of cable 4, and a bidirectional ratchet structure is arranged inside the bidirectional sprocket assembly 7. The scapulohumeral periarthritis rehabilitation training device further comprises a dynamometer 5, wherein the dynamometer 5 is arranged on the cable 4, and the dynamometer 5 can be used to measure the tension applied by the handle 3 on both sides of the sprocket 7-1. The scapulohumeral periarthritis rehabilitation training device further comprises a bench 1, wherein the bench 1 is arranged below the handle 3. The scapulohumeral periarthritis rehabilitation training device further comprises a top rotating mechanism 10, wherein the top rotating mechanism 10 connects the main frame 2 and the wheel frame 8. The wheel frame 8 is connected to the top rotating mechanism 10 via a screw 9.

[0031] like Figure 4-Figure 6 As shown, the bidirectional ratchet structure includes a sprocket 7-1, a bearing 7-3, a sprocket shaft 7-4, a reversing gear 7-7, a paddle spring 7-8, a reversing paddle 7-9 and a reversing cam 7-10; two reversing paddles 7-9 are provided on the outer side of the reversing gear 7-7, and a paddle spring 7-8 and a reversing cam 7-10 are installed between the two reversing paddles 7-9.

[0032] like Figure 4-Figure 6 As shown, a damping structure is also provided in the bidirectional sprocket assembly 7, and the damping structure includes a damping wheel 7-2, a damping spring 7-5, a damping plate 7-6 and an adjusting screw. The damping wheel 7-2 is arranged on the sprocket 7-1, and the damping spring 7-5 is arranged on the guide rod of the damping plate 7-6. The adjusting screw is used to adjust the distance between the damping plate 7-6 and the damping wheel 7-2.

[0033] like Figure 7 As shown, the top rotating mechanism 10 includes a thrust bearing 10-1, a thrust bearing seat 10-2, a ball bearing seat 10-3, a deep groove ball bearing 10-4, a clamping nut 10-5 and a top rotating shaft 10-6.

[0034] The scapulohumeral periarthritis rehabilitation training device further comprises a scale arranged on the main frame 2, and the scale can measure the stretching height.

[0035] The main frame 2 is formed by welding hollow polished stainless steel pipes.

[0036] The specific structural details of each part are described as follows:

[0037] The bench 1 is welded and fixed to the main frame 2, the bottom of the main frame 2 is flush with the bottom of the legs of the bench 1, the upper part of the main frame 2 is provided with a rectangular frame structure, the upper part of the rectangular frame structure is provided with two inclined beams to improve the structural strength of the rectangular frame, a longitudinally arranged square steel pipe is provided in the rectangular frame for installing the top rotating mechanism 10, and the square steel pipe is provided with a round hole and a threaded hole for installing the top rotating mechanism 10. The main frame 2 is welded with hollow polished stainless steel pipes, which is light in weight and strong in strength.

[0038] The top rotating mechanism 10 is mounted on the square steel pipe at the top of the main frame 2 and fixed with screws. The thrust bearing seat 10-2 is fixed with the square steel pipe at the top of the main frame 2 with screws, the outer side of the swivel ring at one end of the thrust bearing 10-1 is clearance-matched with the thrust bearing seat 10-2, and the top rotating shaft 10-6 is clearance-matched with the inner cylindrical surface of the swivel ring at the other end of the thrust bearing seat 10-2. The ball bearing seat 10-3 is fixed with the square steel pipe at the top of the main frame 2 with screws, the thrust bearing seat 10-2 and the ball bearing seat 10-3 are respectively arranged on the two outer side surfaces of the square steel pipe, in a symmetrical arrangement, and the inner cylindrical surface of the thrust bearing seat 10-2 and the inner cylindrical surface of the ball bearing seat 10-3 are in a coaxial state, the inner cylindrical surface of the ball bearing seat 10-3 is clearance-matched with the deep groove ball bearing 10-4, and the deep groove ball bearing 10-4 is sleeved on the top rotating shaft 10-6 with clearance fit. A stepped shoulder is provided at one end of the top rotating shaft 10-6, and a thread is provided at the other end, and a cylindrical hole is provided on the thread. The clamping nut 10-5 is connected to the threaded end of the top rotating shaft 10-6 through threads and locked to ensure that the top rotating shaft 10-6, the thrust bearing 10-1, and the deep groove ball bearing 10-4 are tightly fitted together, and the top rotating shaft 10-6 can rotate freely.

[0039] The wheel frame 8 is formed by bending a metal sheet and has a U-shaped structure. It is provided with mounting holes for installing the top rotating shaft 10-6 and the two-way sprocket assembly 7. The top rotating shaft 10-6 is connected to the wheel frame 8 by a screw 9. The screw 9 passes through the mounting holes of the wheel frame 8 and the top rotating shaft 10-6 and is fixed in position with a nut. The two-way sprocket assembly 7 is connected to the wheel frame 8 by a sprocket shaft 7-4 and is fixed with a nut. The wheel frame 8 and the two-way sprocket mechanism 7 can rotate freely with the top rotating shaft 10-6.

[0040] The sprocket shaft 7-4 of the two-way sprocket assembly 7 is of stepped type and is axially symmetrically installed on the wheel frame 8. Two deep groove ball bearings are installed in the middle part of the sprocket shaft 7-4. The inner circumferential surfaces of the two deep groove ball bearings are clearance-matched with the sprocket shaft 7-4, and the outer circumferential surfaces of the two deep groove ball bearings are clearance-matched with the inner circumferential surfaces of the damping wheel 7-2 and the reversing gear 7-7 respectively. The side surfaces of the outer rings of the two deep groove ball bearings are respectively fitted with the two sides of the sprocket 7-1 and are symmetrically arranged, and the side surfaces of the inner rings are respectively fitted with the shoulders of the sprocket shaft 7-4 and are symmetrically arranged. The damping wheel 7-2 and the reversing gear 7-7 are respectively arranged on both sides of the sprocket 7-1 and are coaxially installed symmetrically and fixed with screws. The two deep groove ball bearings are pressed in the cylindrical hole formed by the inner hole of the damping wheel 7-2 and the inner hole of the reversing gear 7-7, and the sprocket shaft 7-4 can rotate freely with the inner rings of the two bearings. The damping plate 7-6 is in the shape of an arc, and two guide rods are arranged on the plane of the arc. The two guide rods are gap-matched with the mounting holes of the damping plate 7-6 on the plane of one side of the U-shaped structure of the wheel frame 8. Two damping springs 7-5 are mounted on the two guide rods of the damping plate 7-6, and a locking nut is respectively installed at the end of the guide rod of the damping plate 7-6. An adjustment screw for adjusting the distance between the damping plate 7-6 and the damping wheel 7-2 is installed on the side of the wheel frame where the damping plate 7-6 is installed. The distance between the damping plate 7-6 and the damping wheel 7-2 can be adjusted by adjusting the screw-in depth of the adjustment screw, thereby achieving the effect of adjusting the damping. Two reversing paddles 7-9 are installed symmetrically on the other side of the U-shaped structure of the wheel frame 8, and a paddle spring 7-8 is installed between the two reversing paddles 7-9 to ensure that the two reversing paddles 7-9 are always kept in a taut state. A freely rotatable reversing cam 7-10 is installed between the two reversing paddles 7-9, and the reversing paddles 7-9 and the reversing cam 7-10 are installed on the same side of the U-shaped structure of the wheel frame 8. When the outer convex surface of the reversing cam 7-10 pushes one of the two reversing paddles 7-9 open, the other reversing paddle 7-9 will be pressed against the reversing gear 7-7 due to the elastic force of the paddle spring 7-8, so that the reversing gear 7-7 can only rotate in a fixed direction, thereby realizing the single-direction rotation of the sprocket 7-1. When the rotation direction of the sprocket 7-1 needs to be changed, it can be achieved by rotating the reversing cam 7-10 to push the other reversing paddle 7-9 open.

[0041] When it is necessary to carry out rehabilitation training for frozen shoulder, the patient sits on the bench 1, and pulls the two handles 3 with both hands respectively, and continuously pulls the handle 3 on the normal side to continuously raise the handle 3 on the side with frozen shoulder. During the pulling process, the damping in the pulling process can be adjusted by adjusting the screwing depth of the screw that controls the distance between the damping plate 7-6 and the damping wheel 7-2, and then the force application feel during the pulling process can be adjusted. The damping adjustment during the rotation process of the sprocket 7-1 can be used to adapt to different patients and prevent secondary damage to the patient caused by the rotation of the sprocket 7-1. At the same time, the utility model is arranged with a reversing gear 7-7 and a reversing paddle 7-9, and the reversing paddle 7-9 can control the reverse movement of the reversing gear 7-7 tooth by tooth, so that during rehabilitation training, the training height can be gradually increased by pulling the handle 3, and when the training arm follows the handle 3 to be raised to a certain height, the tension acting on the training arm can be measured in real time by the dynamometer 5 to better reflect the training effect. When the pulled hand needs to be released or the pulling direction needs to be changed, the release or change of direction can be achieved by rotating the reversing cam 7-10. In addition, the utility model installs a top rotating mechanism 10 on the upper part of the sprocket 7-1, which can adapt to different sitting postures of patients and prevent secondary injuries caused by the incoordination between the rising and falling processes of the handles 3 on both sides and the sitting posture of the patient.

[0042] The above embodiments of the utility model are described in detail through examples, but the contents described are only exemplary embodiments of the utility model embodiments and cannot be considered to limit the scope of implementation of the utility model embodiments. The protection scope of the utility model embodiments is defined by the claims. Anyone who utilizes the technical solutions described in the utility model embodiments, or who is inspired by the technical solutions of the utility model embodiments, designs similar technical solutions within the essence and protection scope of the utility model embodiments to achieve the above technical effects, or who makes equal changes and improvements to the scope of application, shall still be included in the protection scope of the patent coverage of the utility model embodiments.

Claims

1. A scapulohumeral periarthritis rehabilitation training device, characterized in that: The invention comprises a main frame (2), a handle (3), a cable (4), a chain (6), a bidirectional sprocket assembly (7) and a wheel frame (8), wherein the wheel frame (8) is arranged below the top of the main frame (2), a bidirectional sprocket assembly (7) is arranged inside the wheel frame (8), the chain (6) passes through the bidirectional sprocket assembly (7) and can drive the sprocket (7-1) to rotate bidirectionally, the two ends of the chain (6) are respectively connected to a section of cable (4), the ends of the two sections of cable (4) are connected to the handle (3), and a bidirectional ratchet structure is arranged inside the bidirectional sprocket assembly (7).

2. The scapulohumeral periarthritis rehabilitation training device according to claim 1, characterized in that: The bidirectional ratchet structure comprises a sprocket (7-1), a bearing (7-3), a sprocket shaft (7-4), a reversing gear (7-7), a paddle spring (7-8), a reversing paddle (7-9) and a reversing cam (7-10); two reversing paddles (7-9) are arranged on the outer side of the reversing gear (7-7), and a paddle spring (7-8) and a reversing cam (7-10) are installed between the two reversing paddles (7-9).

3. The scapulohumeral periarthritis rehabilitation training device according to claim 1, characterized in that: The bidirectional sprocket assembly (7) is also provided with a damping structure, the damping structure comprising a damping wheel (7-2), a damping spring (7-5), a damping plate (7-6) and an adjusting screw, the damping wheel (7-2) being arranged on the sprocket (7-1), the damping spring (7-5) being arranged on a guide rod of the damping plate (7-6), and the adjusting screw being used to adjust the distance between the damping plate (7-6) and the damping wheel (7-2).

4. The scapulohumeral periarthritis rehabilitation training device according to claim 1, characterized in that: The scapulohumeral periarthritis rehabilitation training device further comprises a dynamometer (5), wherein the dynamometer (5) is arranged on the cable (4).

5. The scapulohumeral periarthritis rehabilitation training device according to claim 1, characterized in that: The scapulohumeral periarthritis rehabilitation training device further comprises a bench (1), wherein the bench (1) is arranged below the handle (3).

6. The scapulohumeral periarthritis rehabilitation training device according to claim 1, characterized in that: The scapulohumeral periarthritis rehabilitation training device further comprises a top rotating mechanism (10), wherein the top rotating mechanism (10) connects the main frame (2) and the wheel frame (8).

7. The scapulohumeral periarthritis rehabilitation training device according to claim 6, characterized in that: The top rotating mechanism (10) comprises a thrust bearing (10-1), a thrust bearing seat (10-2), a ball bearing seat (10-3), a deep groove ball bearing (10-4), a clamping nut (10-5) and a top rotating shaft (10-6).

8. The scapulohumeral periarthritis rehabilitation training device according to claim 6, characterized in that: The wheel frame (8) is connected to the top rotating mechanism (10) via a screw rod (9).

9. The scapulohumeral periarthritis rehabilitation training device according to claim 1, characterized in that: The scapulohumeral periarthritis rehabilitation training device also includes a scale arranged on the main frame (2).

10. The scapulohumeral periarthritis rehabilitation training device according to any one of claims 1 to 9, characterized in that: The main frame (2) is welded from hollow polished stainless steel pipes.

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