Knee osteoarthritis correction device

Abstract

The utility model discloses a knee osteoarthritis correction device, including base, stand column, crossbeam, damping telescopic link, two swing arm and two pedal, the base is placed on the ground, the lower end of stand column is fixedly connected with the base, the upper end of stand column is vertically connected with the middle of crossbeam, the two swing arms are symmetrically arranged on both sides of stand column, and the damping telescopic link is connected with the damping telescopic link. The upper ends of the two swing arms are rotationally connected with the two ends of the cross beam respectively, the two pedals are fixed to the lower ends of the two swing arms respectively, the damping telescopic rod is horizontally placed, and the two ends of the damping telescopic rod are rotationally connected with the middles of the two swing arms respectively. The pedal plates installed at the lower ends of the two swing arms are used for supporting the two feet of a patient to conduct internal and external shank swing exercise, meanwhile, the damping telescopic rods are used for providing resistance for shank swing, the knee arthritis patient can be helped to conduct rehabilitation training, and the knee joint rehabilitation effect is improved. In addition, the device has the advantages of simple structure, convenience in use, high reliability and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device for treating knee joint osteoarthritis belongs to medical instrument technical field. BACKGROUND

[0002] The knee joint is composed of the medial and lateral condyles of femur, the medial and lateral condyles of tibia and the patella, and is the largest and most complex joint in human body, and is also the joint with the most damage opportunities, and belongs to the trochoid joint; the joint capsule is thin and loose, and is attached to the periphery of the articular cartilage of each bone, and the periphery of the joint capsule is reinforced by ligaments; a knee arthritis patient needs to perform rehabilitation training with the help of a rehabilitation training device, but the existing rehabilitation training devices are few, and cannot assist the patient in performing the internal and external swing exercise of the lower leg, thereby reducing the rehabilitation effect of the knee joint. UTILITY MODEL CONTENT

[0003] The utility model discloses a knee joint osteoarthritis treatment device to help the knee arthritis patient to perform the internal and external swing exercise of the lower leg and improve the rehabilitation effect of the knee joint.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A knee joint osteoarthritis treatment device, which comprises a base, a stand, a cross beam, a damping telescopic rod, two swing arms and two foot pedals, the base is placed on the ground, the lower end of the stand is fixedly connected with the base, the upper end is perpendicularly connected with the middle part of the cross beam, the two swing arms are symmetrically arranged on the two sides of the stand, the upper ends of the two swing arms are rotatably connected with the two ends of the cross beam, the two foot pedals are fixedly arranged at the lower ends of the two swing arms, and the damping telescopic rod is horizontally arranged and rotatably connected with the middle parts of the two swing arms at the two ends.

[0006] The knee joint osteoarthritis treatment device, the swing arm comprises an upper swing rod, an L-shaped swing rod and a swing rod locking knob, the upper swing rod is of a tubular structure, the upper end of the upper swing rod is rotatably connected with the end of the cross beam, the upper end of the vertical arm of the L-shaped swing rod is slidably inserted into the center hole of the upper swing rod, the stud at the front end of the swing rod locking knob is screwed into the threaded hole in the side wall of the upper swing rod and abuts against the side wall of the L-shaped swing rod, the foot pedal is fixed on the horizontal arm of the L-shaped swing rod, and the two ends of the damping telescopic rod are rotatably connected with the upper swing rods of the two swing arms.

[0007] The knee joint osteoarthritis treatment device, the side wall of the upper swing rod is provided with a limiting screw, and the vertical arm of the L-shaped swing rod is provided with an axial limiting long hole corresponding to the limiting screw on the two sides.

[0008] The upper end of the upper swing rod is rotationally connected with the fixed clamping sleeve.

[0009] The damping telescopic rod comprises a spiral spring, an inner sleeve and an outer sleeve, one end of the outer sleeve is closed and rotationally connected with one upper swing rod through an ear plate, and the other end of the outer sleeve is open; one end of the inner sleeve is closed and rotationally connected with another upper swing rod through another ear plate, and the other end of the inner sleeve is open and slidably inserted into the inner part of the outer sleeve; the spiral spring is located in the inner part of the inner sleeve and the outer sleeve, and the two ends of the spiral spring are connected with the closed ends of the inner sleeve and the outer sleeve respectively.

[0010] The damping telescopic rod further comprises a guide limiting sleeve and a limiting ring, the guide limiting sleeve is fixed on the inner wall of the open end of the outer sleeve, and the inner wall of the guide limiting sleeve is in sliding contact with the outer wall of the inner sleeve; the limiting ring is fixed on the outer wall of the open end of the inner sleeve.

[0011] The length of the inner sleeve is equal to that of the outer sleeve, and the natural length of the spiral spring is less than the length of the inner sleeve or more than twice the length of the inner sleeve.

[0012] The damping telescopic rod is rotationally connected with the upper swing rod through a C-shaped sliding groove, a telescopic rod locking knob and a T-shaped lock nut, the C-shaped sliding groove is parallel to the upper swing rod and fixedly connected with a support on the upper swing rod through a bolt, the T-shaped lock nut is slidably installed in the C-shaped sliding groove, and a screw rod at the front end of the telescopic rod locking knob is screwed into the T-shaped lock nut after penetrating through a through hole in an ear plate at the end of the damping telescopic rod.

[0013] The upper end of the stand is connected with the cross beam through a guide sleeve, an adjusting column and an adjusting column locking knob, the lower end of the guide sleeve is fixedly connected with the upper end of the stand; the upper end of the adjusting column is perpendicularly connected with the middle part of the cross beam, and the lower end is slidably inserted into the guide sleeve; and a screw column at the front end of the adjusting column locking knob is screwed into a threaded hole in the side wall of the guide sleeve and abuts against the side wall of the adjusting column.

[0014] The foot pedal is provided with a binding belt corresponding to the foot of the patient.

[0015] The foot pedal installed at the lower ends of the two swing arms supports the feet of the patient to swing the lower legs, and the damping telescopic rod provides resistance to the swing of the lower legs, so that the patient with knee arthritis can be helped to carry out rehabilitation training, and the rehabilitation effect of the knee joint is improved. In addition, the device has the advantages of simple structure, convenient use, high reliability and the like. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further explained in detail below in combination with the drawings and specific embodiments.

[0017] Figure 1 is the utility model in the calf inner swing training state schematic view;

[0018] Figure 2 is the utility model in the calf outer swing exercise state front view;

[0019] Figure 3 is Figure 2 left view;

[0020] Figure 4 is Figure 2 rear view;

[0021] Figure 5 is the utility model in the calf outer swing training state schematic view;

[0022] Figure 6 is Figure 5 top view;

[0023] Figure 7 is Figure 6 partial close-up view (remove the fixed bolt of C type sliding slot);

[0024] Figure 8 is the internal structure schematic view of damping telescopic rod;

[0025] Figure 9 is the structure schematic view of swing rod locking knob;

[0026] Figure 10 is the structure schematic view of C type sliding slot;

[0027] Figure 11 is the structure schematic view of T type lock nut;

[0028] Figure 12 is the structure schematic view of L type swing rod;

[0029] Figure 13 is the structure schematic view of telescopic rod locking knob.

[0030] The various reference signs in the drawings are as follows: 1, crossbeam, 2, upper swing rod, 3, C type sliding slot, 4, swing rod locking knob, 5, L type swing rod, 6, footboard, 7, restraint belt, 8, base, 9, stand, 10, damping telescopic rod, 11, adjusting column, 12, telescopic rod locking knob, 13, adjusting column locking knob, 14, T type lock nut, 15, stud, 16, limit screw, 17, limit long hole, 18, guide sleeve, 19, fixed clamping sleeve;

[0031] 10-1, ear plate, 10-2, guide limit sleeve, 10-3, spiral spring, 10-4, inner sleeve, 10-5, outer sleeve, 10-6, limit ring. DETAILED DESCRIPTION

[0032] The utility model provides a kind of knee osteoarthritis correction device for the problems existing in prior art, which can assist patient to exercise lower leg inside and outside swing, improve the correction rehabilitation effect of knee osteoarthritis.

[0033] Referring to Figures 1-13 The utility model mainly includes crossbeam 1, upper swing lever 2, C type sliding groove 3, swing lever locking knob 4, L type swing lever 5, footboard 6, restraint belt 7, pedestal 8, stand 9, damping telescopic rod 10, adjusting column 11, telescopic rod locking knob 12, adjusting column locking knob 13, T type lock nut 14, stud 15, limit screw 16, limit long hole 17, guide sleeve 18 and fixed clamping sleeve 19.

[0034] Pedestal 8 is placed on the ground, the lower end of stand 9 is connected with pedestal 8, and the upper end is connected with the lower end of guide sleeve 18;The upper end of adjusting column 11 is vertically connected with the middle part of crossbeam 1, and the lower end is slidingly inserted in guide sleeve 18, adjusting column 11 can slide up and down along the inner wall of guide sleeve 18, so as to drive crossbeam 1 to rise or fall;The stud of the front end of adjusting column locking knob 13 is screwed into the threaded hole on the side wall of guide sleeve 18 and is abutted on the side wall of adjusting column 11, and adjusting column 11 can be fixed in guide sleeve 18 by rotating adjusting column locking knob 13. This structure is convenient for adjusting the height of crossbeam 1.

[0035] Two fixed clamping sleeves 19 are fixed at the two ends of crossbeam 1, two upper swing levers 2 are tubular structures, and the upper ends of the two are rotatably connected with the two fixed clamping sleeves 19 through shafts perpendicular to crossbeam 1 and adjusting column 11, and each upper swing lever 2 can freely swing around the shaft at its upper end. The upper end of the vertical arm of two L type swing levers 5 is slidingly inserted into the center hole of two upper swing levers 2, and each L type swing lever 5 can slide up and down or rotate in the center hole of the corresponding upper swing lever 2. The stud of the front end of swing lever locking knob 4 is screwed into the threaded hole on the side wall of upper swing lever 2 and is abutted on the side wall of L type swing lever 5, and L type swing lever 5 can be fixed in upper swing lever 2 by swing lever locking knob 4. Two footboards 6 are fixed on the horizontal arms of two L type swing levers 5 by bolts respectively, for carrying the feet of patient, and each footboard 6 is provided with restraint belt 7 to prevent the feet of patient from slipping.

[0036] When in use, the two foot pedals 6 can be adjusted to the outside, i.e. away from the column 9, or to the inside, i.e. close to the column 9. In order to prevent the two L-shaped swing rods 5 and the foot pedals 6 from rotating around the axis of the upper swing rod 2 during use, a limiting screw 16 is arranged on the side wall of each upper swing rod 2, and an axial limiting long hole 17 corresponding to the limiting screw 16 is arranged on both sides of the vertical arm of each L-shaped swing rod 5. After adjusting the position of the foot pedal 6, the front end of the limiting screw 16 is screwed into the limiting long hole 17, thereby limiting the rotation of the L-shaped swing rod 5 and the foot pedal 6 around the axis of the upper swing rod 2. In addition, the limiting screw 16 can also prevent the L-shaped swing rod 5 from sliding out of the central hole of the upper swing rod 2 after the swing rod locking knob 4 fails, thereby protecting the safety of the patient.

[0037] The two ends of the damping telescopic rod 10 are respectively rotatably connected with the two upper swing rods 2. When the two upper swing rods 2 simultaneously swing outward or simultaneously swing inward, the included angle between them becomes larger or smaller, and the damping telescopic rod 10 plays a damping role.

[0038] Referring to Figure 8 , the damping telescopic rod 10 includes an ear plate 10-1, a guide limiting sleeve 10-2, a spiral spring 10-3, an inner sleeve 10-4, an outer sleeve 10-5, and a limiting ring 10-6. One end of the outer sleeve 10-5 is closed and rotatably connected with one upper swing rod 2 through one ear plate 10-1, and the other end of the outer sleeve 10-5 is open. One end of the inner sleeve 10-4 is closed and rotatably connected with the other upper swing rod 2 through the other ear plate 10-1, and the other end of the inner sleeve 10-4 is open and slidably inserted into the inner part of the outer sleeve 10-5. The spiral spring 10-3 is located inside the inner sleeve 10-4 and the outer sleeve 10-5, and the two ends of the spiral spring 10-3 are respectively connected with the closed ends of the inner sleeve 10-4 and the outer sleeve 10-5. The guide limiting sleeve 10-2 is fixed on the inner wall of the open end of the outer sleeve 10-5, and the inner wall of the guide limiting sleeve 10-2 is in sliding contact with the outer wall of the inner sleeve 10-4. The limiting ring 10-6 is fixed on the outer wall of the open end of the inner sleeve 10-4. The limiting ring 10-6 and the guide limiting sleeve 10-2 can prevent the inner sleeve 10-4 from being pulled out of the outer sleeve 10-5, and the limiting ring 10-6 and the guide limiting sleeve 10-2 are made of wear-resistant material, which can prolong the service life of the damping telescopic rod 10.

[0039] The entire spiral spring 10-3 is encapsulated in the inner sleeve 10-4 and the outer sleeve 10-5, which can avoid causing harm to the patient and ensure the personal safety of the patient.

[0040] When the two foot pedals 6 are adjusted to the outside, the training of the inner calf swing can be carried out, and the damping telescopic rod 10 is compressed during the training; when the two foot pedals 6 are adjusted to the inside, the training of the outer calf swing can be carried out, and the damping telescopic rod 10 is stretched during the training. Therefore, two different damping telescopic rods 10 are required for the two types of training, and in the present correction device, the length relationship of the components of the damping telescopic rod 10 is as follows: the length of the inner sleeve 10-4 is equal to the length of the outer sleeve 10-5, when the training of the inner calf swing is carried out, the natural length of the spiral spring 10-3 is greater than twice the length of the inner sleeve 10-4, and after assembly, the spiral spring 10-3 is always in a compressed state; when the training of the outer calf swing is carried out, the natural length of the spiral spring 10-3 is less than the length of the inner sleeve 10-4, and after assembly, the spiral spring 10-3 is always in a stretched state.

[0041] The dimensions of the guide limiting sleeve 10-2, the inner sleeve 10-4, the outer sleeve 10-5 and the limiting ring 10-6 determine the maximum length and the minimum length of the damping telescopic rod 10, and the maximum length and the minimum length of the damping telescopic rod 10 and the installation height determine the swing range of the two upper swing rods 2 and the L-shaped swing rod 5, and the swing angle of the upper swing rod 2 and the L-shaped swing rod 5 is not less than 30 degrees by reasonably setting the above parameters. In the present correction device, the sum of the axial dimensions of the guide limiting sleeve 10-2 and the limiting ring 10-6 is less than one fifth of the length of the inner sleeve 10-4, which ensures that the damping telescopic rod 10 has sufficient telescopic amount.

[0042] Referring to Figures 5-7 , and Figure 10 and Figure 11 , the damping telescopic rod 10 is connected with the upper swing rod 2 through the C-shaped sliding groove 3, the telescopic rod locking knob 12 and the T-shaped lock nut 14. The C-shaped sliding groove 3 is parallel to the upper swing rod 2 and is fixedly connected with the support on the upper swing rod 2 through a bolt, the T-shaped lock nut 14 is slidingly installed in the C-shaped sliding groove 3, the screw rod at the front end of the telescopic rod locking knob 12 penetrates through the through hole in the end ear plate 10-1 of the damping telescopic rod 10 and is screwed into the T-shaped lock nut 14, the T-shaped lock nut 14 is fixed with the C-shaped sliding groove 3 by relying on the friction force between the T-shaped lock nut 14 and the C-shaped sliding groove 3, and the ear plate 10-1 is loosely sleeved on the smaller diameter part at the front end of the telescopic rod locking knob 12 and can rotate freely around the telescopic rod locking knob 12. Since the axes of the upper swing rod 2, the L-shaped swing rod 5, the stand 9, the adjusting column 11 and the guide sleeve 18 are in the same vertical plane, the damping telescopic rod 10 is rotationally connected with the upper swing rod 2 through the C-shaped sliding groove 3, the telescopic rod locking knob 12 and the T-shaped lock nut 14, which can avoid interference between the damping telescopic rod 10 and the stand 9, the adjusting column 11 and the guide sleeve 18.

[0043] The height of the damping telescopic rod 10 can be adjusted by adjusting the position of the T-shaped lock nut 14 in the C-shaped sliding groove 3, so as to change the inclination angle and the damping torque of the upper swing rod 2 and the L-shaped swing rod 5, and make the device adapt to different types of patients.

[0044] The method of using this utility model is as follows:

[0045] 1. Calf inward swing training

[0046] When performing calf inward swing training, remove the limiting screw 16, loosen the swing arm locking knob 4, and adjust the two foot pedals 6 to the outer side, i.e., the side away from the column 9. Figures 1-4 As shown, then install the limit screw 16, tighten the swing arm locking knob 4, and fix the L-shaped swing arm 5 together with the upper swing arm 2. Adjust the height of the crossbeam 1 by adjusting the column locking knob 13, and then adjust the height of the two foot pedals 6. Select a damping telescopic rod 10 with a larger length than the coil spring 10-3, install the damping telescopic rod 10 between the two upper swing arms 2, and adjust the height of the damping telescopic rod 10. Because the coil spring 10-3 is longer, the length of the damping telescopic rod 10 is also larger in its natural state, which spreads the two upper swing arms 2 to the sides. The patient sits on the bed or chair, places both feet on the two foot pedals 6 respectively, and fixes them with the restraint strap 7. Then, the patient repeatedly swings their lower legs inward to compress the damping telescopic rod 10, performing lower leg inward swing training.

[0047] 2. Lower leg outward abduction training

[0048] When performing lower leg outward swing training, remove the limiting screw 16, loosen the swing arm locking knob 4, and adjust the two foot pedals 6 to the inward side, that is, the side closer to the column 9. Figure 5 As shown, then install the limit screw 16, tighten the swing arm locking knob 4, and fix the L-shaped swing arm 5 together with the upper swing arm 2. Adjust the height of the crossbeam 1 by adjusting the column locking knob 13, and then adjust the height of the two foot pedals 6. Select the damping telescopic rod 10 with a shorter length than the coil spring 10-3, install the damping telescopic rod 10 between the two upper swing arms 2, and adjust the height of the damping telescopic rod 10. Because the coil spring 10-3 is shorter, the length of the damping telescopic rod 10 is shorter in its natural state, and the two upper swing arms 2 move closer to the column 9. The patient sits on the bed or chair, places both feet on the two foot pedals 6 respectively, and fixes them with the restraint strap 7. Then, the patient repeatedly swings their lower legs outward to stretch the damping telescopic rod 10, performing lower leg outward swing training.

[0049] This knee osteoarthritis correction device has a simple structure, is easy to use, and has high reliability. It can facilitate lower leg inward and outward abduction training and is suitable for different types of patients, effectively improving the correction and rehabilitation effect of knee osteoarthritis.

Claims

1. A corrective device for knee osteoarthritis, characterized in that, The system includes a base (8), a column (9), a crossbeam (1), a damping telescopic rod (10), two swing arms, and two foot pedals (6). The base (8) is placed on the ground. The lower end of the column (9) is fixedly connected to the base (8), and the upper end is vertically connected to the middle of the crossbeam (1). The two swing arms are symmetrically arranged on both sides of the column (9). The upper ends of the two swing arms are rotatably connected to the two ends of the crossbeam (1), and the two foot pedals (6) are fixed to the lower ends of the two swing arms. The damping telescopic rod (10) is placed horizontally and its two ends are rotatably connected to the middle of the two swing arms.

2. The knee osteoarthritis correction device according to claim 1, characterized in that, The swing arm includes an upper swing rod (2), an L-shaped swing rod (5), and a swing rod locking knob (4). The upper swing rod (2) is a tubular structure. The upper end of the upper swing rod (2) is rotatably connected to the end of the crossbeam (1). The upper end of the vertical arm of the L-shaped swing rod (5) is slidably inserted into the center hole of the upper swing rod (2). The stud at the front end of the swing rod locking knob (4) is screwed into the threaded hole on the side wall of the upper swing rod (2) and abuts against the side wall of the L-shaped swing rod (5). The foot pedal (6) is fixed on the horizontal arm of the L-shaped swing rod (5). The two ends of the damping telescopic rod (10) are rotatably connected to the upper swing rod (2) of the two swing arms respectively.

3. The knee osteoarthritis correction device according to claim 2, characterized in that, The upper swing arm (2) is provided with a limiting screw (16) on its side wall, and the vertical arm of the L-shaped swing arm (5) is provided with axial limiting holes (17) corresponding to the limiting screw (16) on both sides.

4. The knee osteoarthritis correction device according to claim 3, characterized in that, Both ends of the crossbeam (1) are provided with fixed sleeves (19), and the upper end of the upper swing rod (2) is rotatably connected to the fixed sleeves (19).

5. A knee osteoarthritis corrective device according to any one of claims 2-4, characterized in that, The damping telescopic rod (10) includes a helical spring (10-3), an inner sleeve (10-4), and an outer sleeve (10-5). One end of the outer sleeve (10-5) is closed and rotatably connected to an upper swing rod (2) through an ear plate (10-1), while the other end of the outer sleeve (10-5) is open. One end of the inner sleeve (10-4) is closed and rotatably connected to another upper swing rod (2) through another ear plate (10-1), while the other end of the inner sleeve (10-4) is open and slides into the outer sleeve (10-5) from the open end. The helical spring (10-3) is located inside the inner sleeve (10-4) and the outer sleeve (10-5), and both ends of the helical spring (10-3) are connected to the closed ends of the inner sleeve (10-4) and the outer sleeve (10-5), respectively.

6. The knee osteoarthritis correction device according to claim 5, characterized in that, The damping telescopic rod (10) further includes a guide limiting sleeve (10-2) and a limiting ring (10-6). The guide limiting sleeve (10-2) is fixed on the inner wall of the open end of the outer sleeve (10-5), and the inner wall of the guide limiting sleeve (10-2) slides in contact with the outer wall of the inner sleeve (10-4). The limiting ring (10-6) is fixed on the outer wall of the open end of the inner sleeve (10-4).

7. The knee osteoarthritis correction device according to claim 6, characterized in that, The inner sleeve (10-4) and the outer sleeve (10-5) are of equal length, and the natural length of the helical spring (10-3) is less than the length of the inner sleeve (10-4) or more than twice the length of the inner sleeve (10-4).

8. The knee osteoarthritis correction device according to claim 7, characterized in that, The damping telescopic rod (10) is rotatably connected to the upper swing rod (2) through a C-shaped slide groove (3), a telescopic rod locking knob (12) and a T-shaped lock nut (14). The C-shaped slide groove (3) is parallel to the upper swing rod (2) and is fixedly connected to the bracket on the upper swing rod (2) by bolts. The T-shaped lock nut (14) is slidably installed in the C-shaped slide groove (3). The screw at the front end of the telescopic rod locking knob (12) passes through the through hole on the end ear plate (10-1) of the damping telescopic rod (10) and is screwed into the T-shaped lock nut (14).

9. The knee osteoarthritis correction device according to claim 1, characterized in that, The upper end of the column (9) is connected to the crossbeam (1) through the guide sleeve (18), the adjusting column (11) and the adjusting column locking knob (13). The lower end of the guide sleeve (18) is fixedly connected to the upper end of the column (9). The upper end of the adjusting column (11) is vertically connected to the middle of the crossbeam (1), and the lower end is slidably inserted into the guide sleeve (18). The stud at the front end of the adjusting column locking knob (13) is screwed into the threaded hole on the side wall of the guide sleeve (18) and presses against the side wall of the adjusting column (11).

10. The knee osteoarthritis correction device according to claim 1, characterized in that, The foot pedal (6) is equipped with a restraint strap (7) corresponding to the patient's foot.

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