Lower limb knee joint rehabilitation training device

Abstract

The utility model belongs to the field of rehabilitation auxiliary devices, and particularly relates to a lower limb knee joint rehabilitation training device which is characterized in that an upper supporting beam and a lower supporting beam are in sliding connection, a thigh fixing sliding block is arranged in the middle of the upper supporting beam, and a thigh first lifting cover, a thigh second lifting cover and a thigh air bag cover are sequentially arranged above the thigh fixing sliding block; an air bag is contained between the second thigh lifting cover and the thigh air bag cover, a shank fixing sliding block is arranged in the middle of the lower supporting beam, a second shank lifting cover and a first shank lifting cover are sequentially arranged above the shank fixing sliding block, the air bag is contained between the shank fixing sliding block and the second shank lifting cover, and connecting parts are arranged in the middles of the bottoms of the upper supporting beam and the lower supporting beam. Two sliding rods are fixed to each connecting part, the other ends of the sliding rods are connected with circular connecting pieces, threads at the two ends of the middle shaft are opposite, the two ends are connected with the circular connecting pieces through the threads, and the two sides of the middle shaft are connected with hand wheels. The device increases axial force, stretches and relaxes knee joints to achieve a better training effect, and is simple in structure and convenient to carry.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of rehabilitation auxiliary appliance especially relates to a lower limbs knee joint rehabilitation training device. BACKGROUND

[0002] Knee extension disorder is one of the most common adverse symptoms after knee joint surgery, which is manifested as the knee flexor muscle group spasticity leading to the patient's inability to do knee extension exercise, thereby affecting the patient's normal activities. Rehabilitation auxiliary appliance is a product for improving, compensating, replacing human function and implementing auxiliary treatment and preventing disability.

[0003] Although the existing products can meet the basic knee extension function, the axial force is ignored for training, and the patient cannot complete the training independently and the product is inconvenient to carry. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a lower limbs knee joint rehabilitation training device, which solves the problem of ignoring the exercise of axial force, the patient's inability to complete the training independently and the inconvenience of carrying.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A lower limbs knee joint rehabilitation training device, comprising an upper support beam, a lower support beam and a middle shaft, the upper support beam and the lower support beam are slidably connected, the upper support beam and the lower support beam are both composed of support rods, one end of the upper support beam and the lower support beam away from the center is provided with an end device, a thigh fixing sliding block is arranged in the middle of the upper support beam, a thigh first lifting cover is arranged above the thigh fixing sliding block, a thigh second lifting cover is connected above the thigh first lifting cover, a thigh air bag cover is arranged above the thigh second lifting cover, an air bag is accommodated between the thigh second lifting cover and the thigh air bag cover, a calf fixing sliding block is arranged in the middle of the lower support beam, a calf second lifting cover is arranged above the calf fixing sliding block, an air bag is accommodated between the calf fixing sliding block and the calf second lifting cover, the calf second lifting cover is connected with a calf first lifting cover, a connecting part is arranged in the middle of the bottom of the upper support beam and the lower support beam, two sliding rods are fixed on each connecting part, the other end of the sliding rod is connected with a circular connecting piece, four sliding rods form a parallelogram, the middle shaft is reversely threaded at both ends, the circular connecting pieces are connected through threads at both ends of the middle shaft, and hand wheels are connected to the two sides of the middle shaft.

[0007] Further, the thigh fixing sliding block is slidably connected with the upper support beam, and the position of the thigh fixing sliding block can be adjusted according to needs, thereby expanding the range of the applicable population.

[0008] Further, the calf fixing sliding block is slidably connected with the lower support beam.

[0009] Further, the thigh fixing sliding block is connected with the thigh air bag cover and the thigh fixing sliding block and the thigh first lifting cover through elastic belts.

[0010] Further, the calf fixing sliding block is connected with the calf first lifting cover through an elastic belt.

[0011] Further, the thigh first lifting cover and the calf first lifting cover are arc-shaped and are fitted with legs.

[0012] Further, the air bag is connected with an automatic inflation device, and a quick deflation valve is arranged on the air bag; the automatic inflation reduces the operation difficulty of a patient, the quick deflation valve plays an emergency role at a dangerous moment, and if the patient operates improperly and the force applied exceeds the bearing range, the quick deflation valve can be opened to reduce the force.

[0013] Pressure sensors are arranged above the thighs and below the calves, and a limb angle ruler is arranged on one side of the knee joint; the pressure borne and the flexion and extension angle of the knee joint are embodied in real time by data, the data are transmitted to a computer display, and the patient can know the flexion and extension angle and the training effect at any time during rehabilitation training, thereby laying a foundation for a subsequent rehabilitation plan.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] (1) pressure is applied through the air bag, the thigh moves downward, the calf moves upward, and the purpose of stretching the knee joint is achieved; the quick deflation valve ensures the safety of the patient during training and avoids causing secondary injury to the patient during training;

[0016] (2) the device has a small structure size, is convenient to carry, can be independently operated by the patient, and can independently complete rehabilitation training, thereby reducing the dependence on a rehabilitation physician or family members during training, saving manpower, enhancing the confidence of the patient, and being favorable to improving the rehabilitation training effect;

[0017] (3) the combination use of the sliding rod, the circular connecting piece and the middle shaft enables the upper support beam and the lower support beam to stretch and retract, increases the axial force while applying force upward and downward, and stretches and relaxes the knee joint, so that the training effect is better, and the structure is simple and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the utility model;

[0019] Figure 2 is a side view of the utility model;

[0020] Figure 3 is a use state view of an electronic limb angle ruler and a pressure sensor.

[0021] Explanation of the accompanying drawings: 1. Upper support beam; 2. Lower support beam; 3. Thigh fixing slider; 4. Thigh first lifting cover; 5. Thigh second lifting cover; 6. Thigh airbag cover; 7. Calf fixing slider; 8. Calf second lifting cover; 9. Calf first lifting cover; 10. Sliding rod; 11. Circular connecting piece; 12. Middle axis; 13. End device; 14. Handwheel. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1-2 As shown, a lower limb knee joint rehabilitation training device includes an upper support beam 1, a lower support beam 2 and a central axis 12. The upper support beam 1 and the lower support beam 2 are slidably connected. The ends of the upper support beam 1 and the lower support beam 2 away from the center are both provided with end devices 13. The middle part of the upper support beam 1 is slidably connected to the thigh fixed slider 3. A thigh first lifting cover 4 is provided above the thigh fixed slider 3. A thigh second lifting cover 5 is connected above the first thigh lifting cover 4. A thigh airbag cover 6 is provided above the second thigh lifting cover 5. The thigh fixed slider 3 and the thigh airbag cover 6 and the thigh fixed slider 3 and the first thigh lifting cover 4 are connected by elastic bands. An airbag is accommodated between the second thigh lifting cover 5 and the thigh airbag cover 6. The airbag is connected to an automatic inflation device, and a quick deflation valve is provided on the airbag. The middle part of the lower support beam 2 is slidably connected to the calf fixed slider A fixed slider 7 and a second calf lifting cover 8 are provided above the calf fixing slider 7. An airbag is accommodated between the calf fixing slider 7 and the second calf lifting cover 8. The airbag is connected to an automatic inflation device, and a quick deflation valve is provided on the airbag. The second calf lifting cover 8 is connected to the first calf lifting cover 9; the first thigh lifting cover 4 and the first calf lifting cover 9 are both arc-shaped and fit the legs; by inflating the airbag, the first thigh lifting cover and the second thigh lifting cover move downward and exert a downward force, so that the first calf lifting cover and the second calf lifting cover drag the patient's calf upward and exert an upward force to achieve the purpose of knee extension training. The quick deflation valve can deflate autonomously to ensure the safety of the patient during training and avoid secondary injury to the patient during training; the elastic band plays a fixing role while increasing the comfort of the patient.

[0024] The middle of the upper support beam 1 and the lower support beam 2 is provided with a connecting part, two sliding rods 10 are fixed on each connecting part, the other end of the sliding rod 10 is connected with a circular connecting piece 11, the four sliding rods 10 form a parallelogram, the middle shaft 12 is provided with reverse threads at both ends, the two ends are connected with the circular connecting piece 11 through threads, and the middle shaft 12 is connected with a hand wheel 14 on both sides; the middle shaft is moved by rotating the hand wheel, the sliding rod is expanded and contracted, the upper support beam and the lower support beam are elongated and contracted, the knee joint is stretched and relaxed by increasing the axial force while the thigh and the calf are stressed upward and downward, the training effect is strengthened, the size of the applied force of the stretched knee and the axial stretching is controlled by the patient, accidents during autonomous training are effectively prevented, if the applied force during training is uncomfortable, the force can be released in time to ensure the safety of the patient.

[0025] As shown in Figure 3 The pressure sensor is arranged above the thigh and below the calf, and the limb angle ruler is arranged on one side of the knee joint, the pressure and the flexion and extension angle of the knee joint are embodied in real time by data, and the data is transmitted to the computer display, so that the patient can know the flexion and extension angle and the training effect at any time during the rehabilitation exercise, and lay a foundation for the subsequent rehabilitation plan, and promote the recovery of the knee joint function.

[0026] The use process is as follows: the patient sits on the side of the upper support beam 1 of the rehabilitation training device, the lower limb of the affected side is placed parallel to the rehabilitation training device, the thigh is inserted into the thigh fixed sliding block 3 and the thigh first lifting cover 4, the elastic band connecting the thigh fixed sliding block 3 and the thigh first lifting cover 4 is tensioned according to the training requirement to fix the thigh of the patient, the calf is placed on the calf first lifting cover 9, the elastic band connected with the calf fixed sliding block 7 is tensioned to fix the calf of the patient, the air bag in the thigh air bag cover 6 and the calf fixed sliding block 7 is inflated, the air bag in the thigh air bag cover 6 is inflated and expanded, the thigh second lifting cover 5 and the thigh first lifting cover 4 are vertically moved downward, the thigh of the patient is moved downward under the downward pressure, the air bag in the calf fixed sliding block 7 is inflated and expanded, the calf first lifting cover 9 and the calf second lifting cover 8 are vertically moved upward, the calf of the patient is moved upward under the upward supporting force, the thigh is moved downward, the calf is moved upward, and the purpose of stretching the knee joint is achieved.

[0027] The device can provide axial stretching force, when the patient uses the device, if it is desired to add axial force, the hand wheel 14 on the right side of the middle shaft can be rotated clockwise, the middle shaft 12 is provided with reverse threads at both ends close to the hand wheel 14, when the middle shaft 12 is rotated, the two circular connecting pieces 11 move relatively, the telescopic rod piece 10 connected with the circular connecting piece 11 drives the upper support beam 1 and the lower support beam 2 to move outward, the distance between the thigh fixed sliding block 3 and the calf fixed sliding block 7 is increased, at this time the thighs of the patient are fixed, the axial stretching force is provided for the calf of the patient, and the training effect is enhanced.

[0028] If the patient inflates the air bag too much during the training process, causing the lower limbs to bear too much force and causing discomfort, the air bag quick release valve can be opened to reduce the pressure; the axial force is entirely controlled by the patient, and the clockwise rotation of the shaft increases the shaft force, and the counterclockwise rotation reduces the shaft force. The device increases the independence of the patient's rehabilitation training on the one hand, and on the other hand, avoids secondary injury to the patient during the training process.

Claims

1. A lower extremity knee joint rehabilitation training device, characterized in that, The utility model provides a kind of leg supporting device, including upper support beam (1), lower support beam (2) and middle shaft (12), the upper support beam (1) and lower support beam (2) sliding connection, the upper support beam (1) and lower support beam (2) are all made of support rod, the upper support beam (1) and lower support beam (2) are all equipped with end device (13) at the end away from center, the upper support beam (1) middle part is equipped with thigh fixed slider (3), thigh first lifting cover (4) is equipped above thigh fixed slider (3), thigh second lifting cover (5) is connected above thigh first lifting cover (4), thigh air bag cover (6) is equipped above thigh second lifting cover (5), air bag is contained between thigh second lifting cover (5) and thigh air bag cover (6), lower support beam (2) middle part is equipped with calf fixed slider (7), calf second lifting cover (8) is equipped above calf fixed slider (7), air bag is contained between calf fixed slider (7) and calf second lifting cover (8), calf first lifting cover (9) is connected above calf second lifting cover (8), the bottom of the upper support beam (1) and lower support beam (2) is equipped with connecting portion, two sliding rods (10) are fixed on each connecting portion, the other end of the sliding rod (10) is connected with circular connecting piece (11), four sliding rods (10) form parallelogram, the middle shaft (12) is threaded reversely, and the two ends are connected with circular connecting piece (11) by thread, and hand wheel (14) is connected on both sides of the middle shaft (12).

2. The lower limb knee joint rehabilitation training device according to claim 1, characterized in that, The thigh fixed slider (3) is slidingly connected with the upper support beam (1).

3. The lower limb knee joint rehabilitation training device according to claim 2, characterized in that, The calf fixed slider (7) is slidingly connected with the lower support beam (2).

4. The lower limb knee joint rehabilitation training device according to claim 3, characterized in that, The thigh fixed slider (3) is connected with the thigh air bag cover (6) and the thigh first lifting cover (4) by elastic bands.

5. The lower limb knee joint rehabilitation training device according to claim 4, characterized in that, The calf fixed slider (7) is connected with the calf first lifting cover (9) by elastic bands.

6. The lower limb knee joint rehabilitation training device according to claim 5, characterized in that, The thigh first lifting cover (4) and the calf first lifting cover (9) are both arc-shaped and fit the legs.

7. The lower limb knee joint rehabilitation training device according to any one of claims 1 or 6, characterized in that, The air bags are connected with automatic inflation devices, and quick deflation valves are arranged on the air bags.

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