TWI783766B - foot drop corrector - Google Patents

Abstract

[Problem] The foot drop corrective device of the prior art, it seems that when it is installed on the ankle, it will become impossible to wear shoes, and the pressure of the installation will become a biased load, which will cause unnecessary load resistance to the ankle, resulting in pretending. It becomes complicated and causes long-term wearing fatigue to the ankle, or imposes unnecessary load on the ankle holding part of the orthotic and causes damage to the orthotic. [Solution] The device for correcting foot drop is characterized in that it has: a calf support for binding the calf tightly; The front end of the bottom is used as the sole support for loading and supporting, and the sole extension is extended at the rear end of the sole support; and the front end of the calf extension and the front end of the sole extension are free to bend a folded pivot support portion; and an adjustment strap member interposed between the calf support body and the sole support portion.

Description

foot drop corrector

The present invention relates to a foot drop correcting device for correcting an ankle in a foot drop state (that is, a state in which the toe is dropped due to a disease such as a spinal injury or a stroke) to a foot dorsiflexion state.

In the prior art, as a result of spinal injury or cerebral apoplexy, the body becomes unable to move freely, and the ankle becomes a state of sagging downward, that is, a state called base flexion opposite to the dorsiflexion position.

In this state, when walking, the toes that hang downward may interfere with slight protrusions on the road and cause a fall or cause an abnormal load on the ankle.

In order to avoid such accidents caused by walking in the base flexion position, it is proposed to have an orthotic that is mounted on the ankle and raises the toe to form a dorsiflexion position with the lower limb (refer to Patent Documents 1 and 2).

In the orthotic appliance of Patent Document 1, the hard member formed into a slightly L-shape is covered from the rear of the patient's foot, that is, from the lower leg to the sole and toe, and the aforementioned hard member is passed through with components It is fixed on the front of the patient's foot, that is, on the shin and ankle, so as to maintain the dorsiflexed position.

The orthopedic device of Patent Document 2 is composed of an auxiliary frame supporting the calf from the rear, a foot auxiliary base supporting the sole of the foot from below, and an elastic module with a spring installed on the auxiliary frame. , the elastic module system is connected with the auxiliary foot base, and the auxiliary frame and the auxiliary foot base are connected into a shape of ㄑ.

By installing the above-mentioned corrective appliance on the patient with foot drop, the patient's foot can be lifted upward by the force of the spring of the elastic module, and the dorsiflexion position can be maintained.

[Patent Document 1] Japanese Patent Laid-Open No. 2017-79929

[Patent Document 2] Japanese Utility Model Registration No. 3218602

However, the foot drop correction appliance of the prior art has the following general problems: for example, as in Patent Document 1, when it is installed on the ankle, it will cause the volume to become large and become impossible to wear ordinary shoes, or Like Patent Document 2, it will cause unnecessary load resistance to the ankle due to the elastic force of the spring, and the work of installing it on the ankle is also complicated. Furthermore, if it is worn for a long time, Then the loading pressure will become a bias load and impose unnecessary load on the ankle, and cause corrective fatigue to the ankle and accumulate fatigue load, while for The ankle produces the opposite effect of the orthotic.

The present invention is carried out in view of such a situation, and uses "a calf support body that fastens the calf and supports it from the rear" and an "adjustment strap member that fastens the front curved part of the ankle" And the 3-point support of the "plantar support part that supports the front end of the sole of the foot" fixes the entire ankle from the front and rear sides and the sole of the foot and securely fixes the ankle in a dorsiflexion state. Correct the foot drop that hangs downward to solve the above problems.

The foot drop correcting device of the present invention is characterized in that it has: a calf support body that binds the calf tightly; and a calf extension that extends the lower ends of both sides of the support body downward; The front end is used as the sole support part for loading and supporting; and the sole extension part is extended from the rear end of the sole support part; the shaft support part; and the adjustment strap member interposed between the calf support body and the sole support part; and the left and right sides of the calf support body behind the adjustment strap member An abutment strap member between the supports.

In addition, the system also has the following feature: that is, the pivot support part is arranged at a position lower than the ankle bone of the ankle.

Moreover, the system also possesses the following feature: that is, the strap member for adjustment is erected between the left and right foot extensions and the left and right calf extensions in a cross-hung manner.

Moreover, the system also has the following feature: that is, the calf support body, the calf extension part, the sole support part, and the sole extension part are formed of hard polyethylene material or carbon material.

If according to the invention of Claim 1, it is because the system has: the calf supporting body for tightening the calf; The bottom of the foot is used as a supporting part for loading, and the bottom extension is extended at the rear end of the bottom support; and the front end of the calf extension and the front end of the bottom extension are freely bent the shaft support part; and the adjustment strap member interposed between the calf support body and the sole support part; and the left and right sides of the calf support body behind the adjustment strap member Therefore, the abutting strap member between the supporting bodies is not to support the bottom of the foot as a whole, but only supports the front end of the bottom, and becomes a structure that stretches the bottom of the foot. , it is possible to reduce the weight of the entire foot drop correction device, and it has the effect of being able to feel the feeling from the sole of the foot when wearing it or moving it, making it easier to walk.

Also, since the front end of the bottom of the foot in the ankle is fixed by the plantar support, the rear end is released, and the front of the ankle of the joint is fixed by the strap member for adjustment. Therefore, The system covers the bottom of the foot with a foot drop correcting device with the smallest area, so the system is lightweight, and the components that will become obstacles when wearing shoes are suppressed to a minimum, so that it is easy to put on shoes or even even with shoes on It will hinder walking.

Also, because of the "calf support body that tightens the calf and supports it from the rear", "the adjustment strap member that tightens the front bend of the ankle" and "supports the front end of the sole of the foot The 3-point support of the "plantar support part" fixes the entire ankle from the front and rear sides and the bottom of the foot. Therefore, even with a simple structure, the ankle can be firmly fixed in dorsiflexion (Dorsiflexion) The effect of correcting foot drop that hangs downward due to the condition.

In addition, since the system is configured so that it can be worn by tightening one strap member for adjustment, even a user who has become unilaterally paralyzed due to sequelae of a stroke or the like can easily use one hand To dress it up, it has the effect of greatly shortening the time for putting it on.

Also, according to the invention of Claim 2, by arranging the pivot support part at a position lower than the ankle bone, when the ankle is rotated with the ankle bone as the center, since the pivot support part is positioned Below it, therefore, the position of the pivot support will not be displaced due to the rotation of the ankle, and no bias load will be applied to other components interlinked with the pivot support. The calf support and The strap member for adjustment has the effect of being able to avoid walking in a state where the foot is dropped by performing correct and sure movement and fixing the dorsiflexion of the ankle.

In addition, according to the invention of claim 3, the adjustment strap member is directed toward Pushing in the front direction is to fix the rear side of the lower limbs with the support body of the lower limbs, and The abutment strap that is in contact with the front part of the ankle flexure at the front of the lower limb pushes and adjusts the strap member, thereby pushing and supporting the ankle from the front and rear sides, and has the ability to push the ankle from the front Later, it will be more sure to support the effect.

According to the invention of claim 4, the strap member for adjustment is erected in a cross-hung manner between the left and right foot extensions and the left and right calf extensions, and the cross portion of the cross-hook is It is just positioned at the front part of the ankle joint, and it has the effect of being able to support the ankle from the front and back together with the calf support body and reliably support it.

In particular, the ankle in the bottom flexion position is caused by the cross-hung part, the calf support that binds the inner side of the calf, and the plantar support that supports the sole of the foot from below. The 3-direction ankle support correction from the front-back direction and the bottom surface direction has the effect of maintaining the dorsiflexed shape.

According to the invention of claim 5, by making the hard board a polyethylene material or a carbon material, the system has a certain degree of hardness, and can reliably support the ankle horizontally without causing harm to walking. Corrective effect of hindrance.

M: Foot drop correction appliance

1: calf support body

11,11': left and right side supports

12: back support body

13: Connecting components

14: Extended setting components

15,15': left and right leg extensions

2: Pivot support part

3: Foot support

3a, 3a': both ends

31,31': left and right plantar extension

4: abutment belt

4a: central part

41: strap member for adjustment

42: Intersection

[Fig. 1] is a perspective view showing the foot drop correcting appliance of the present invention.

[Fig. 2] is a front view showing the foot drop correcting appliance of the present invention.

[Fig. 3] is a rear view showing the foot drop correcting appliance of the present invention.

[Fig. 4] is a right side view showing the foot drop correcting appliance of the present invention.

[Fig. 5] is a left side view showing the foot drop correcting appliance of the present invention.

[ Fig. 6 ] is a schematic diagram showing the effect on the foot when the foot drop correcting tool of the present invention is installed.

[ Fig. 7 ] is a perspective view showing a state in which the foot drop correcting appliance of the present invention is installed.

[FIG. 8] It is a perspective view showing the appearance of wearing shoes with the foot drop correcting tool of the present invention installed.

[ Fig. 9 ] is a right side view showing other embodiments of the foot drop correcting appliance of the present invention.

[ Fig. 10 ] is a right side view showing other embodiments of the foot drop correcting appliance of the present invention.

The gist of the present invention is that it is equipped with: a calf supporting body that binds the calf tightly; and a calf extending portion extending downward at the lower ends of both sides of the supporting body; The plantar support part of the support, and the sole of the foot extended from the rear end of the plantar support part extension; and the front end of the calf extension and the sole extension are freely bendable pivot support; a strap member; and an abutment strap member erected between the left and right side supports of the calf support at the rear of the adjustment strap member, and the pivot support portion is arranged on the ankle bone of the ankle And at the lower position, and the system is configured to erect an abutment belt between the left and right pivot support parts and push the belt toward the front direction by the front of the lower end of the lower leg, and the adjustment strap member system Between the left and right plantar extensions and the left and right calf extensions, it is erected in a cross-hung manner, and the body is made of hard board resin, such as polyethylene, as a material.

Hereinafter, the embodiments of the foot drop correcting appliance of the present invention will be described in detail according to the drawings.

Fig. 1 to Fig. 5 show the whole of the foot drop correcting appliance of the present invention, Fig. 1 is a perspective view, Fig. 2 is a front view, Fig. 3 is a back view, Fig. 4 is a right side view, Fig. 5 The system is the left side view. Also, Fig. 6 is a schematic explanatory diagram showing the supporting function of the foot when the foot drop correcting appliance of the present invention is installed. 7 and 8 are perspective views showing the state of the foot drop correcting appliance of the present invention being installed.

In the foot drop correction device M of the present invention, the calf support body 1 for fastening the calf is arranged at the rearmost part of the foot drop correction device M of the present invention as shown in FIGS. 1 to 5 , and through the left and right side support bodies 11, 11' covering and abutting the two sides of the lower limbs and the At the rear part, the rear side of the lower limb is covered and abutted with the back support body 12, and the three sides of the lower limb except the front side are sketched in cross section by the left and right side support bodies 11, 11' and the rear support body 12. U-shape for covering.

In addition, the rear support body 12 is pivotally supported and fixed on the right side support body 11' with one end edge freely bendable, and the other end edge is formed by a connecting member 13 such as magic invisible tape (registered trademark) In order to be able to connect with the left side support body 11 .

The left and right side support bodies 11, 11' are integrally connected with the lower part by a slightly U-shaped extension member 14, and are in contact with the front side of the lower limbs when installed. Therefore, the system cooperates with the back support body 12 which abuts against the rear side of the lower limbs to surround the lower limbs from the front, back, left, and right sides, and securely support and fix the lower limbs.

In this way, the calf support body 1 is able to cover the peripheral surface of the lower limbs by integrally connecting the left and right side support bodies 11, 11' in a U-shaped cross-section and the rear support body 12 connected thereto. Tie it around firmly and tightly.

The lower parts of the left and right side support bodies 11, 11' of the lower limb support body 1 extend downward and form the left and right calf extension parts 15, 15'.

The lower ends of the left and right calf extensions 15, 15' are arranged continuously with the sole support 3 which supports the front end of the bottom of the foot via the pivot support 2.

That is, the sole support part 3 is formed in an oblong shape with a certain foot width in such a way that the front end of the foot is placed and supported. The left and right foot extensions 31, 31' extended at the rear end of the foot support part 3 are extended at its two ends 3a, 3a'.

That is to say, the two ends of the sole support part 3 are raised at a height slightly corresponding to the thickness of the sole of the foot, and the raised parts 3a, 3a' hold and support the two sides of the foot.

The bulges 3a, 3a' further extend towards the rear and form the left and right plantar extensions 31, 31', and the rear ends reach the pivot support part 2, and are extended with the left and right calves via the pivot support part 2. The lower ends of the parts 15, 15' are pivotally supported and connected.

The pivot support part 2 is provided at a position lower than the position of the ankle bone. Therefore, for example, when the ankle is bent during walking, it becomes easy to perform the bending movement of the ankle.

In this way, the front ends of the calf extensions 15, 15' and the sole extensions 31, 31' are connected to each other in a freely bendable manner with the pivot support 2 as the center. When the foot drop correction tool M is installed, the ankle is maintained in a slightly L-shape, and when walking, the ankle can be bent inward, that is, the angle becomes smaller than the L-shape. .

Therefore, by being able to freely assume the dorsiflexion position in the state where the foot drop correcting tool M is installed, it becomes easy to perform movements such as squatting down or going up and down stairs.

However, the bending in the opposite direction to a larger angle than the L shape is restricted by the adjustment strap member 41 described later, and the ankle is maintained as dorsiflexion, but there is a certain degree of flexion in the ankle. limit.

The pivot support part 2 is pivotally supported at the respective front ends of the left and right calf extension parts 15, 15' and the left and right sole extension parts 31, 31', between the left and right pivot support parts 2 The tie is erected with a strap, and this is set to abut against the strap member 4 .

The abutting belt member 4 is mounted on the left and right hinges so that the center portion 4a is located at the rear side corresponding to the X-shaped crossing portion 42 of the adjusting belt member 41 crossed and slanted. between shaft supports.

The abutting strap member 4 is pulled and fixed at the front side of the patient's ankle toward the oblique rear, that is, toward the heel, when the foot drop correcting appliance M is installed. When the strap member 4 is pressed against the strap member 4, if it is pushed by the ankle, it will become a cross section 42 that pushes the strap member 41 for adjustment in front of it, and this action is to correct the ankle in the flexed state The ankle is corrected into an L-shape by dorsiflexion.

That is, between the left and right foot extensions 31, 31' and the left and right calf extensions 15, 15', one strap is crossed at the front of the ankle to hang diagonally. To be configured, specifically, at the initial end of one of the plantar extensions 31 or 31', to fix one end of the strap, and directly pass through the left and right sides of the calf support 1. One of the left and right through holes at the support body 11, 11' enters into one of the holes and pulls out from the other hole, and then crosses at the center of the front of the ankle and fixes the other end of the strap on the other side. At the initial end of the plantar extension 31' or 31.

The strap member 41 for adjustment can be adjusted by And the overlapping positions of the two ends separated from each other are adjusted to adjust the tension or length of the strap member 41 for adjustment.

At the rear of the adjustment strap 41, a contact strap member 4 is erected between the left and right side supports 11, 11' of the calf support body 1, and is in contact with the front of the ankle to play a role in supporting the ankle. The center of the ankle is fixed by moving forward.

In addition, the left and right plantar extensions 31, 31', the left and right calf extensions 15, 15' and the calf support body 1 support the ankle more reliably by making the hard board a polyethylene material or carbon material. , and can correct the deformed ankle in the bottom flexion position.

The ankle orthotic appliance of the present invention basically simplifies the structure of the orthotic appliance as much as possible, and pushes the important ankle support point necessary for correction, as shown in Figure 6. Focus on the 3 points (X, Y, Z), and use the 3 points of corrective support to correct the flexion position without imposing unnecessary load on the ankle.

The points of support at 3 points (X, Y, Z) are as shown in Figure 6, and are set as "1. The rear of the calf at the left and right calf support body 1 is used as a part of fastening support (X)" , "2. Between the left and right plantar extensions 31, 31' and the left and right calf extensions 15, 15', the adjustment strap member 41 that has been erected and pushed from the back side Ankle and supports the part (Y) of the front side of the joint equivalent to the center of the ankle", "3. The bulge at the two ends of the left and right plantar support parts 3 having a height corresponding to the thickness of the foot plate 3a, 3a'corresponding part (Z)", And it is possible to surely correct the ankle in the state of foot drop to dorsiflexion by using the support points of these 3 points.

By being configured as above, the foot drop correcting device M is as shown in FIG. 7 , and in the installed state, since the pivot support part 2 is positioned at the ankle of the wearer Therefore, it has the effect of reducing the increase of the area compared with the foot drop correcting appliance in which the pivot support part is arranged at the position of the ankle bone so far.

Therefore, as shown in FIG. 8 , the wearer wears the foot drop correcting device M in a state where he can directly use the shoes such as jogging shoes that he usually wears, and becomes able to use the shoes that he usually wears. shoes, and can also live without compromising the external aesthetics.

Also, when walking, the feeling of the soles of the feet transmitted from the ground is important for achieving a sense of balance or kicking the feet out. The structure that supports the soles of the feet from below is not good for the feeling transmitted by the soles of the feet.

However, the foot drop correction tool M of the present invention is different from the previous foot drop correction tools in that the sole support portion 3 is not used to support the entire sole of the foot but only to the minimum on the toe side. Support, when fitted, enables the sensation from the ground directly or through the sole of the shoe to be felt. And it has the effect of having an advantage on walking.

Also, as other embodiments, as shown in FIG. 9 Generally, when one of the side ends of the rear support body 12 is pivotally supported and fixed at the right side support body 11', it can be considered as a fixing tool by the button 13a arranged at the right side support body 11' and The hook hole 13b provided at the rear support body 12 is used for fixing.

The hook hole 13b is formed in a shape in which a hole having a diameter larger than the button head of the button tool 13a and a hole having a diameter smaller than the button head of the button tool are repeatedly connected.

That is to say, the wearer inserts the button tool 13a from the hook hole 13b whose diameter is the largest when wearing it normally, and hooks the button tool 13a on the smaller diameter hole 13b by making it slide laterally. In the hole, it can be fixed.

Also, as another embodiment, as shown in FIG. 10 , when one side of the rear support body 12 is pivotally supported and fixed to the right side support body 11', it can be considered as a fixture. The powerful magnets 13c, 13c' installed on the right side support body 11' and the rear support body 12, and the front end side of the rear support body 12 are pierced with a mounting auxiliary hole 13d for assisting the mounting.

When the wearer is carrying out the normal installation, the finger is passed through the auxiliary hole 13d and the magnet 13c' on the back support body 12 side is close to the magnet 13c installed on the right side support body 11' to make the magnets 13c, 13c ' Mutual adsorption, through this, the system can be installed.

In addition, patients who have residual paralysis symptoms on one side as a sequela of diseases such as cervical spine injuries or cerebral infarction may have symptoms of significantly reduced freedom of movement of the hands along with the symptoms of foot drop Condition.

Therefore, in the above-mentioned two embodiments, the structure is set to make it easy to put on, and there is an effect that even a person with a significantly reduced degree of freedom of movement of the hand can quickly put on it alone. .

In addition, in the case of any one of the above-mentioned two configurations, in addition to simplifying the daily putting on and taking off, it is also possible to use the other one of the support body 12 on the back. The connecting member 13 (such as magic invisible tape (registered trademark)) at the side end is carried out the adjustment of adorning.

In the above-mentioned embodiment, although the structure for the left foot has been described, when it is mounted on the right foot, of course, each structure is changed symmetrically.

The above-mentioned various effects are only enumerations of the most suitable effects that can be produced by the present invention, and the effects caused by the present invention are not limited to those described in this embodiment.

M: Foot drop correction appliance 1: calf support body 11,11': left and right side supports 12: back support body 13: Connecting components 14: Extended setting components 15: calf extension 2: Pivot support part 3: Foot support 3a, 3a': both ends 31,31': left and right plantar extension 4: abutment belt 4a: central part 41: strap member for adjustment 42: Intersection

Claims (5)

A device for correcting foot drop, which is characterized in that the system has: a calf support for binding the calf; and a calf extension extending the lower ends of both sides of the support downward; and the front end of the bottom of the foot The sole support part for loading support; and the sole extension part extending the rear end of the sole support part; part; and the strap member for adjustment erected between the calf support body and the sole support part; abutment between strap members. The foot drop correcting tool as described in claim 1, wherein the pivot support part is arranged at a position lower than the ankle bone of the ankle. The foot drop correcting device as described in Claim 1 or 2, wherein an abutment strap is erected between the left and right pivotal support parts, and is configured to move the strap toward the front through the front of the lower end of the lower leg. push. The foot drop correcting appliance as described in claim 1 or 2, wherein, The strap member for adjustment is tied between the left and right foot extensions and the left and right calf extensions, and is erected in a cross-hung manner. The foot drop correcting device as described in claim 1 or 2, wherein the calf support, the calf extension, the sole support and the sole extension are formed of hard polyethylene material or carbon material.

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