CN211023899U - A knee dynamic foot drop and hemiplegic gait aid - Google Patents

Abstract

The utility model provides a knee power drop foot and hemiplegia gait assistor, including shallow, gait correction mechanism includes thigh package, shank package, foot support, connects rope one, connects two and the elasticity stay cord, thigh package parcel is on the thigh, shank package parcel is in shank department under the knee, the foot support cover is on the sole, the foot support links to each other through being connected rope one with shank package, shank package and thigh package link to each other through being connected rope two, the one end of elasticity stay cord links to each other with shank package, and the other end links to each other with the shallow. The cart and the shank bag piece are connected together by using an elastic pull rope, when a patient pushes the cart in advance by self, the shank where the shank bag piece is located is slightly lifted upwards and forwards by the elastic pull rope, then the contraction force of the elastic pull rope and the self gravity of the patient droop to contact with the ground, and the cycle is repeated, so that the gait training of the patient is assisted according to the power of pushing the cart forwards.

Description

A knee dynamic foot drop and hemiplegic gait aid

technical field

The utility model relates to the technical field of medical rehabilitation equipment, in particular to a knee dynamic foot drop and hemiplegic gait aid.

Background technique

Post-stroke hemiplegia patients are often left with a circular gait as the main feature due to abnormal movement patterns (lower extensor pattern) and lower extremity muscle imbalance (foot drop caused by high triceps calf tension and tibialis anterior muscle weakness). The hemiplegic gait is mainly manifested as insufficient forward flexion of the thighs when stepping, and the lower limbs are moved forward by lifting the pelvis and abducting the hip joints in a circular posture. The poor weight-bearing situation seriously affected the patient's walking posture and walking safety.

Ankle foot orthoses (AFO) are often used clinically to correct the problems of foot drop and varus, and also have a certain inhibitory effect on knee hyperextension. Movement patterns and coordinated movements, and the patient still has an abnormal gait. At the same time, AFO also has problems such as excessive restriction of ankle joint activity and inhibition of plantar sensory input. Although dynamic ankle joint AFO can allow some patients to exert their own ankle dorsiflexion function. However, the plantar flexion function of the ankle joint is still limited, and at the same time, some patients have weak ankle dorsiflexion, which makes them unable to perform the ankle dorsiflexion function normally during the walking cycle, which leads to the deterioration of the ankle joint function of the patients.

At present, an auxiliary device capable of correcting the gait of hemiplegic patients has also appeared on the market, such as a knee power camber pulley type foot drop and hemiplegic gait corrector with Chinese Patent Publication No. CN105997320B. Fixing parts for thigh correction mechanism, calf correction components, calf correction component fixing parts, crank lever assembly, foot support connecting rope and foot support..." The application claims that the linkage of the knee and ankle joints can effectively improve the abnormal lower limb movements of stroke patients It can correct the abnormal gait of hemiplegic patients to a certain extent.

However, in actual rehabilitation training, especially in the early stage of rehabilitation for stroke patients, it is often difficult for patients to lift their lower limbs on their own, and generally requires external assistance to achieve the effect of walking freely. Consistent with the step rate of the healthy side, the action is also relatively limited, and there are certain defects.

Utility model content

(1) Technical problems solved

Aiming at the deficiencies of the prior art, the utility model provides a knee dynamic foot drop and hemiplegic gait aid that can move at will, which can respectively control and train the hip, knee and ankle joints of stroke patients in the early rehabilitation stage.

(2) Technical solutions

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a knee-powered foot drop and hemiplegia gait aid, comprising a cart and a gait correction mechanism, and the gait correction mechanism includes a thigh bag, a calf bag Parts, foot support, connecting rope 1, connecting rope 2 and elastic drawstring, the thigh bag is wrapped around the thigh, the calf bag is wrapped around the lower leg below the knee, the foot support is sleeved on the sole of the foot, the foot The support and the calf bag are connected by connecting rope 1, the calf bag and the thigh bag are connected by connecting rope 2, one end of the elastic pulling rope is connected with the calf bag, and the other end is connected with the cart.

Preferably, the width of the thigh package, the calf package and the foot support is 5-10 cm.

Preferably, the thigh bag and the calf bag are detachably connected by Velcro.

Preferably, the cart is provided with a lateral adjustment mechanism capable of laterally adjusting the position of the elastic drawstring.

Preferably, the lateral adjustment mechanism includes a laterally arranged slide rail, two sliders slidably fitted on the slide rail, and each slide block is provided with a buckle for connecting with an elastic pull cord.

Preferably, a plurality of fixing holes are provided on the sliding rail at equal intervals in the horizontal direction, and a fastening bolt can be screwed into the fixing holes to lock the sliding block.

Preferably, the cart includes a chassis, a plurality of universal wheels, a tray, a hollow support column, a telescopic column and two handles, the universal wheel is arranged at the bottom of the chassis, and the support column is vertically arranged on the chassis , the telescopic column can extend vertically in the support column, the tray is arranged on the top of the telescopic column, the two handles are arranged on the tray, and the telescopic column is vertically provided with a number of positioning holes at equal intervals, so A fixing bolt corresponding to the positioning hole is threadedly connected to the support column.

(3) Beneficial effects

The utility model provides a knee dynamic foot drop and hemiplegic gait aid. Has the following beneficial effects:

1. This knee-powered foot drop and hemiplegic gait aid uses an elastic elastic cord to connect the cart and the calf package. When the patient pushes the cart before, the calf package is connected by the elastic cord. The calf where it is located is slightly lifted upward and forward, and then the contraction force of the elastic rope and the patient's own gravity are used to sag to contact the ground. This cycle is used to assist the patient's gait training according to the power of the push cart. With the help of others, and the movement is free, the recovery effect is good.

Description of drawings

Fig. 1 is the front isometric view of the utility model;

2 is a schematic diagram of a lateral adjustment mechanism of the present invention;

Fig. 3 is the front view of the gait correction mechanism of the utility model;

4 is a rear view of the gait correction mechanism of the present invention;

FIG. 5 is a back isometric view of the utility model.

In the picture: 1 cart, 11 chassis, 12 universal wheels, 13 trays, 14 support columns, 15 telescopic columns, 16 positioning holes, 17 fixed bolts, 18 handles, 2 gait correction mechanisms, 21 thigh packages, 22 calves Package, 23 foot rest, 24 connecting rope one, 25 connecting rope two, 26 elastic rope, 27 Velcro, 3 lateral adjustment mechanism, 31 sliding rail, 32 sliding block, 33 fixing hole, 34 fastening bolt, 35 buckle Ring, 4 prostheses.

Detailed ways

An embodiment of the present invention provides a knee-powered foot drop and hemiplegic gait aid, as shown in Figures 1-5, comprising a cart 1, a gait correction mechanism 2, and the gait correction mechanism 2 includes a thigh package 21, a calf Package 22 , foot rest 23 , connecting rope one 24 , connecting rope two 25 and elastic pulling rope 26 . The thigh bag 21 is wrapped around the thigh, the calf bag 22 is wrapped around the lower leg below the knee, and the foot support 23 is wrapped around the sole of the foot. The foot support 23 is connected with the calf package 22 through a connecting rope 24, one end of the connecting rope 24 is connected to the top of the foot support 23, and the other end is connected to the side of the calf package 22 on the front of the knee. The calf bag 22 and the thigh bag 21 are connected by connecting rope two 25, both ends of the connecting rope 25 are located on the calf bag 22, and the thigh bag 21 is located on the side of the leg. One end of the elastic pull cord 26 is connected to the front side of the calf bag 22 at the knee, and the other end is connected to the cart 1 . Both ends of the connecting rope 1 24 , the connecting rope 2 25 and the elastic pulling rope 26 are provided with buckles, which are similar to safety belt buckles and can be disassembled, which are existing commercial products. The thigh bag 21 , the calf bag 22 , the foot support 23 and the cart 1 are all provided with buckles 35 that can be fastened by the first connecting rope 24 , the second connecting rope 25 and the elastic pulling rope 26 .

As shown in FIG. 3 , the width of the thigh package 21 , the calf package 22 and the foot support 23 is 5-10 cm. The thigh bag 21 , the calf bag 22 and the foot support 23 are made of thick sponge interlayer fabric. The width design of 5-10cm can increase the contact area with the leg, so that the patient's leg will not feel tight and sore after being wrapped for a long time.

As shown in FIG. 4 , the thigh bag 21 and the calf bag 22 are detachably connected by Velcro 27 . It is very convenient to pull the Velcro 27 during installation and disassembly.

As shown in Figures 3-4, when the gait correction mechanism 2 is used specifically, the prosthetic limb 4 in the figure shows the human leg, the foot support 23 is placed on the sole of the prosthetic limb 4, and the calf package 22 is wrapped under the knee of the prosthetic limb 4 At the calf, wrap the thigh bag 21 on the thigh of the prosthesis 4, then the connecting rope one 24 is respectively buckled on the buckle 35 on the foot support 23 and the calf bag 22 through the buckles at both ends, and the connecting rope two 25 passes through. The buckles at both ends are respectively buckled on the buckles 35 on the thigh bag 21 and the calf bag 22, and finally the buckles on both ends of the elastic cord 26 are buckled on the calf bag 22 and the buckle of the cart 1 respectively. on ring 35.

An elastic elastic cord 26 is used to connect the cart 1 and the calf pack 22 together. When the patient pushes the cart 1 by himself, the calf where the calf pack 22 is located is moved upward and forward by the elastic cord 26. Slightly lift, and then use the contraction force of the elastic rope 26 and the patient's own gravity to sag to contact the ground, and in this cycle, the patient's gait training is assisted according to the power of the push cart 1, without the assistance of others, and Freedom of movement and good recovery.

As shown in FIG. 1 , the cart 1 is provided with a lateral adjustment mechanism 3 that can laterally adjust the position of the elastic drawstring 26 . The lateral position of the elastic drawstring 26 can be adjusted according to the width of the patient's body, when the elastic drawstring 26 is parallel to the patient's leg.

As shown in FIG. 2 , the lateral adjustment mechanism 3 includes a laterally arranged sliding rail 31 , and two sliding blocks 32 slidably fitted on the sliding rail 31 . Buckle 35.

The slide rail 31 is provided with a plurality of fixing holes 33 at equal intervals in the horizontal direction. Fastening bolts 34 can be screwed into the fixing holes 33 to lock the slider 32 .

As shown in FIG. 2 , when the lateral adjustment mechanism 3 is used, the fastening bolts 34 are first loosened, and then the slider 32 is slid to the level of the leg, and then the fastening bolts 34 are tightened in the corresponding fixing holes 33 Tighten the slider 32 inside.

As shown in FIG. 1 , the cart 1 includes a chassis 11 , four universal wheels 12 , a tray 13 , a hollow support column 14 , two telescopic columns 15 and two handles 18 , and the universal wheels 12 are arranged at the bottom of the chassis 11 . , the support column 14 is vertically arranged on the chassis 11, the telescopic column 15 can extend vertically in the support column 14, the tray 13 is arranged on the top of the telescopic column 15, the tray 13 is used to support the patient's hand, and the patient can be supported on the tray 13 on. Two handles 18 are provided on the tray 13, and when the cart is pushed, the patient holds the two handles 18 to control the cart. The telescopic column 15 is vertically provided with a plurality of positioning holes 16 at equal intervals, and the support column 14 is screwed with fixing bolts 17 corresponding to the positioning holes 16 . By setting the telescopic column 15 , the height of the tray 13 can be adjusted according to the height of the patient. After the telescopic column 15 is adjusted to the corresponding height, the fixing bolt 17 is screwed into the corresponding positioning hole 16 of the telescopic column 15 .

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A knee-powered foot drop and a hemiplegic gait aid, comprising a cart (1), a gait correction mechanism (2), and the gait correction mechanism (2) comprises a thigh package (21), a calf package (22), a foot support (23), a connecting rope (24), a connecting rope two (25) and an elastic pulling rope (26), the thigh bag (21) is wrapped around the thigh, and the calf bag ( 22) Wrapped at the lower leg below the knee, the foot support (23) is sleeved on the sole of the foot, and the foot support (23) is connected with the calf package (22) by connecting rope one (24), and the calf package (22) is connected. ) and the thigh bag (21) are connected by connecting rope two (25), characterized in that: one end of the elastic pulling rope (26) is connected with the calf bag (22), and the other end is connected with the cart (1). 2. a kind of knee power foot drop and hemiplegic gait aid according to claim 1, is characterized in that: the width of described thigh bag (21), calf bag (22), foot support (23) is 5-10cm. 3. a kind of knee power foot drop and hemiplegia gait aid according to claim 1, is characterized in that: described thigh bag (21), calf bag (22) are all detachable by Velcro (27) connection. 4. A knee-powered foot drop and hemiplegic gait aid according to claim 1, characterized in that: the cart (1) is provided with a lateral adjustment mechanism that can laterally adjust the position of the elastic cord (26) (3). 5. A knee-powered foot drop and hemiplegic gait aid according to claim 4, characterized in that: the lateral adjustment mechanism (3) comprises a laterally arranged slide rail (31), which is slidably fitted on the slide rail Two sliding blocks (32) on (31), each sliding block (32) is provided with a buckle (35) for connecting with the elastic pulling rope (26). 6. A knee-powered foot drop and hemiplegic gait aid according to claim 5, characterized in that: the sliding rail (31) is provided with a plurality of fixing holes (33) at equal intervals in the horizontal direction, and the fixing holes Fastening bolts (34) can be screwed into (33) to lock the slider (32). 7. A knee-powered foot drop and hemiplegic gait aid according to claim 1, wherein the cart (1) comprises a chassis (11), a plurality of universal wheels (12), a tray (13) ), a hollow support column (14), a telescopic column (15) and two handles (18), the universal wheel (12) is arranged at the bottom of the chassis (11), and the support column (14) is arranged vertically On the chassis (11), the telescopic column (15) can extend vertically in the support column (14), the tray (13) is arranged on the top of the telescopic column (15), and the two handles (18) The telescopic column (15) is vertically provided with a plurality of positioning holes (16) at equal intervals, and the support column (14) is threadedly connected with fixing holes corresponding to the positioning holes (16). Bolt (17).

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