CN213788039U - Corrector for limiting knee hyperextension - Google Patents

Abstract

The utility model discloses a restriction knee hyperextension's unscrambler utilizes the waist to carry out necessary support to the shank through last bracing piece and bottom suspension vaulting pole to through the relative rotation angle and the rotation resistance of limiting mechanism restriction upper and lower bracing piece, thereby avoid knee joint hyperextension. The key points of the technical scheme are as follows: the utility model provides a restriction knee hyperextension's unscrambler, includes waist fixed establishment, shank fixed establishment, supporting mechanism and limiting mechanism, supporting mechanism includes bracing piece and lower bracing piece, go up bracing piece and lower bracing piece swivelling joint, go up bracing piece upper end and waist fixed establishment swivelling joint, lower bracing piece tip and shank fixed establishment swivelling joint, limiting mechanism is used for limiting the relative rotation angle and the rotational resistance of bracing piece and lower bracing piece.

Description

Corrector for limiting knee hyperextension

Technical Field

The utility model relates to the field of medical care equipment, specifically be a restriction knee hyperextension's unscrambler.

Background

Patients with lower limb paralysis, such as cerebral apoplexy and spinal cord injury, can have the phenomenon of knee hyperextension after standing or walking is recovered due to incomplete recovery of muscle strength or poor movement coordination, which is also clinically called as knee tension or knee flexion deformity, and means that the affected limb supports the phase in the gait cycle, and the knee extension angle of the femoral-tibial joint on the sagittal plane is more than 5 degrees. The hyperextension of the knee not only affects the walking function and reduces the walking efficiency, but also causes damage to tissues such as joints, cartilage and ligaments, and further causes pain in the knee joint, movement disorder and the like. In the prior art, the traditional knee, ankle and foot orthosis limits the movement of the knee joint and the ankle joint through the hinge, so that the knee joint keeps a slight flexion position and has a certain correction effect on the hyperextension of the knee. But the knee joint movement is limited to a certain extent, and the knee joint is relatively heavy, so that the walking training of the patient is greatly influenced. The lower limb exoskeleton robot assists the patient to move the joint, which is a convenient and effective method, but the lower limb exoskeleton robot is expensive in manufacturing cost, heavy in weight, high in maintenance cost and not easy to popularize clinically.

Therefore, it is one of the technical problems to be solved at present that how to provide a simple and relatively acceptable device for a patient with paralysis lower limbs to correct and improve the hyperextension of the knee of the patient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that exists among the above-mentioned background art, provide a restriction knee hyperextension's unscrambler, utilize the waist to carry out necessary support to the shank through last bracing piece and bottom suspension vaulting pole to the relative rotation angle and the rotation resistance of upper and lower bracing piece are restricted through limiting mechanism, thereby avoid the knee joint to excessively extend.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a restriction knee hyperextension's unscrambler, includes waist fixed establishment, shank fixed establishment, supporting mechanism and limiting mechanism, supporting mechanism includes bracing piece and lower bracing piece, go up bracing piece and lower bracing piece swivelling joint, go up bracing piece upper end and waist fixed establishment swivelling joint, lower bracing piece tip and shank fixed establishment swivelling joint, limiting mechanism is used for limiting the relative rotation angle and the rotational resistance of bracing piece and lower bracing piece.

Preferably, the limiting mechanism is a spring, and two ends of the spring are respectively connected with the upper supporting rod and the lower supporting rod.

Preferably, the upper support rod is provided with a first groove, the lower support rod is provided with a second groove, and the first groove and the second groove are vertically aligned and are communicated with each other; the spring is located in the first and second grooves.

Preferably, the number of the springs is multiple, and two circular rings are respectively arranged at two end parts of each spring; and the upper end part of the first groove and the lower end part of the second groove are respectively provided with a hook.

Preferably, the upper support rod comprises a first sleeve rod and a first sliding rod, and the first sleeve rod and the first sliding rod are sleeved with each other and can slide relatively; the lower supporting rod comprises a second loop bar and a second sliding rod, and the second loop bar and the second sliding rod are mutually sleeved and can slide relatively.

Preferably, the first sleeve rod and the second sleeve rod are provided with gears and fastening knobs used for controlling the rotation states of the gears, the first sliding rod and the second sliding rod are provided with sawtooth tracks, and the sawtooth tracks are matched with the gears.

Preferably, the waist fixing mechanism comprises at least one hard fixing part and two fixing belts, and the upper end part of the upper supporting rod is rotatably connected with the hard fixing part.

Preferably, the shank fixing part comprises at least one hard fixing lantern ring, an annular groove is formed in the inner side of the fixing lantern ring, and an annular air bag is arranged in the annular groove; the lower end of the lower supporting rod is rotatably connected with the fixed lantern ring.

Compared with the prior art, the corrector for limiting the hyperextension of the knee, which adopts the technical scheme, has the following beneficial effects:

1. adopt the utility model discloses a restriction knee hyperextension's unscrambler is equipped with limiting mechanism between upper and lower bracing piece, can restrict upper and lower bracing piece's relative rotation angle and rotation resistance, when the patient carries out the joint activity or walks, the flexion and extension of knee joint is restricted at definite within range, can prevent effectively that the knee joint from excessively extending.

2. The limiting mechanism adopts a spring, has a certain buffering effect, and can prevent a patient from rapidly stretching or buckling the knee joint suddenly when the joint moves due to insufficient muscle force or coordination obstacle of the lower limb, so that the injury of the joint, the muscle, the ligament and the like is avoided, and the falling can be prevented to a certain extent; in the preferred scheme, the springs are detachable, the springs with proper elasticity can be selected according to the condition and the body type of a patient, and the knee joint mobility is kept to the maximum extent on the basis of correcting the knee hyperextension; the spring is positioned in the grooves of the upper and lower support rods, which is not only favorable for beauty, but also can prevent the spring from being stuck into external sundries.

3. The length of the upper and lower supporting rods can be adjusted, so that the wearing position is more accurate, the influence on walking is reduced, and the exercise effect is favorably improved.

4. The annular air bag arranged in the fixed lantern ring can stably fix the crus of the patient and can also relieve the oppression feeling of the crus.

5. The device can be made of polymer plastics, titanium alloy or carbon materials, is lighter than the traditional knee, ankle and foot orthosis and lower limb exoskeleton robot, reduces energy consumption and is convenient to wear.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention for an orthosis for limiting hyperextension of the knee.

Fig. 2 and 3 are schematic structural views of the lower leg fixing mechanism in this embodiment.

Fig. 4 is a schematic view of a connection manner of the first slide bar and the first sleeve in this embodiment.

Fig. 5 is a schematic structural diagram of the limiting mechanism in this embodiment.

Fig. 6 is a schematic structural view of a spring and a hook in the present embodiment.

Fig. 7 is a schematic diagram of the usage of the present embodiment.

Reference numerals: 1. a waist fixing mechanism; 10. a hard fixing portion; 11. fixing belts; 2. a shank fixation mechanism; 20. a fixed collar; 21. an annular air bag; 22. an annular groove; 3. a support mechanism; 30. an upper support rod; 301. a first loop bar; 302. a first slide bar; 3020. a first groove; 303. a gear; 304. a saw-tooth track; 305. fastening a knob; 305. hooking; 31. a lower support bar; 310. a second loop bar; 3101. a second groove; 311. a second slide bar; 4. a spring; 40. a circular ring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The orthosis shown in fig. 1 for limiting knee hyperextension comprises a waist fixing mechanism 1, a lower leg fixing mechanism 2, a supporting mechanism 3 and a limiting mechanism.

Waist fixed establishment 1 includes two stereoplasm fixed parts 10 and two fixed bands 11, and when dressing, two stereoplasm fixed parts 10 laminate respectively in patient's waist both sides to play the supporting role, then link together two fixed bands 11 with the mode of joint, make waist fixed establishment 1 fix the waist.

As shown in figures 2 and 3, the lower leg fixing part comprises a hard fixing collar 20, an annular groove 22 is arranged on the inner side of the fixing collar 20, an annular air bag 21 is arranged in the annular groove 22, when the lower leg fixing part is worn, the lower leg penetrates into the fixing collar 20 (the fixing collar 20 is preferably arranged at the position below the lower calf), then the annular air bag 21 is inflated, and the annular air bag 21 is inflated to fix the lower leg in the fixing collar 20.

As shown in fig. 1 and 4, the support mechanism 3 includes an upper support rod 30 and a lower support rod 31, the upper support rod 30 includes a first sleeve rod 301 and a first slide rod 302, and the first sleeve rod 301 and the first slide rod 302 are sleeved with each other and can slide relatively; the lower supporting rod 31 includes a second sleeve 310 and a second sliding rod 311, and the second sleeve 310 and the second sliding rod 311 are sleeved with each other and can slide relatively.

Inside all being equipped with gear 303 of first loop bar 301 and second loop bar 310, first loop bar 301 and second loop bar 310 lateral wall all are equipped with fastening knob 305, fastening knob 305 connects gear 303, fastening knob 305 is used for controlling gear 303 rotation state, all be equipped with sawtooth track 304 on first slide bar 302 and the second slide bar 311, sawtooth track 304 is located inside first loop bar 301 and the second loop bar 310, sawtooth track 304 and gear 303 mutually support.

The upper end of the first loop bar 301 is rotatably connected to the hard fixing portion 10 of the lumbar fixing mechanism 1, the lower end of the second loop bar 310 is rotatably connected to the fixing loop 20 of the lower leg fixing mechanism 2, and the first slide bar 302 and the second slide bar 311 are rotatably connected.

As shown in fig. 5 and 6, a first groove 3020 is provided on the first slide bar 302, a second groove 3101 is provided on the second loop bar 310, and the first groove 3020 and the second groove 3101 are aligned up and down and are communicated with each other; the limiting mechanism is a spring 4, and the spring 4 is located in the first groove 3020 and the second groove 3101.

The number of the springs 4 is multiple, the elastic force of each spring 4 is different, two ends of each spring 4 are respectively provided with a ring 40, the upper end of the first groove 3020 and the lower end of the second groove 3101 are respectively provided with a hook 305, the rings 40 at two ends of each spring 4 are respectively sleeved on the hooks 305 of the first groove 3020 and the second groove 3101, each spring 4 can be detached and replaced, and in actual use, a proper spring 4 can be selected according to the body type and the condition of a patient.

In the use method of the embodiment shown in fig. 7, when in use, the fixing collar 20 is fitted on the lower part of the calf of the patient, the lumbar fixing mechanism 1 is fixed on the lumbar part of the patient, the hard fixing parts 10 are tightly attached to both sides of the lumbar part, and the rotary connection part of the upper support rod 30 and the lower support rod 31 is positioned at the side of the knee joint of the patient.

The above description is a preferred embodiment of the present invention, and a person skilled in the art can make several modifications and improvements without departing from the principles of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims (8)

1. An orthosis for limiting knee hyperextension, comprising: including waist fixed establishment (1), shank fixed establishment (2), supporting mechanism (3) and limiting mechanism, supporting mechanism (3) are including bracing piece (30) and lower support rod (31), go up bracing piece (30) and lower support rod (31) swivelling joint, go up bracing piece (30) upper end and waist fixed establishment (1) swivelling joint, lower tip and shank fixed establishment (2) swivelling joint under lower support rod (31), limiting mechanism is used for limiting the relative rotation angle and the rotation resistance of bracing piece (30) and lower support rod (31).

2. The orthosis of claim 1 for limiting knee hyperextension, wherein: the limiting mechanism is a spring (4), and two ends of the spring (4) are respectively connected with an upper supporting rod (30) and a lower supporting rod (31).

3. The orthosis of claim 2 for limiting knee hyperextension, wherein: the upper supporting rod (30) is provided with a first groove, the lower supporting rod (31) is provided with a second groove, and the first groove and the second groove are vertically aligned and are communicated with each other; the spring (4) is positioned in the first groove and the second groove.

4. The orthosis of claim 3 for limiting knee hyperextension, wherein: the number of the springs (4) is multiple, and two circular rings (40) are respectively arranged at two end parts of each spring (4); the upper end part of the first groove and the lower end part of the second groove are respectively provided with a hook (305).

5. The orthosis of claim 1 for limiting knee hyperextension, wherein: the upper supporting rod (30) comprises a first loop bar (301) and a first sliding rod (302), and the first loop bar (301) and the first sliding rod (302) are mutually sleeved and can slide relatively; the lower supporting rod (31) comprises a second loop bar (310) and a second sliding rod (311), and the second loop bar (310) and the second sliding rod (311) are mutually sleeved and can slide relatively.

6. The orthosis of claim 5 for limiting knee hyperextension, wherein: first loop bar (301) and second loop bar (310) all are equipped with gear (303) and are used for controlling fastening knob (304) of gear (303) rotation state, all be equipped with the sawtooth track on first slide bar (302) and the second slide bar (311), the sawtooth track is mutually supported with gear (303).

7. The orthosis of claim 1 for limiting knee hyperextension, wherein: the waist fixing mechanism (1) comprises at least one hard fixing part (10) and two fixing bands (11), and the upper end part of the upper supporting rod (30) is rotatably connected with the hard fixing part (10).

8. The orthosis of claim 1 for limiting knee hyperextension, wherein: the shank fixing part comprises at least one hard fixing lantern ring (20), an annular groove (22) is formed in the inner side of the fixing lantern ring (20), and an annular air bag (21) is arranged in the annular groove (22); the lower end part of the lower support rod (31) is rotatably connected with the fixed lantern ring (20).

Images