JPH08206145A - Foot ware for patient of knee arthritis deformans - Google Patents

Abstract

PURPOSE: To provide a foot ware for a patient suffering from knee arthritis deformans which has sufficient functions as such for a patient suffering from knee arthritis deformans while enabling handy utilization thereof without strange appearance. CONSTITUTION: This foot ware is so arranged that the thickness to the ground surface from the top surface of a bottom material 1102 in a heel area is less at the rear part of the heel area as compared with that at the front part thereof so that the line connecting the undersurface of the bottom material where a mid foot bone head 30 is positioned and the front end of the undersurface of the heel area of the bottom material is raised from the horizontal line at an angle with respect to the extension of the horizontal line connecting the rear end of the undersurface of the heel area grounded and the front end of the undersurface of the heel area with a heel part 20 under a load. Moreover, the rear part of the heel area has an impact absorbing mechanism so that the height of the heel part 20 of a face contacting a human foot is lowered when a load is received.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to slipper-shaped indoor or outdoor footwear used for patients with knee osteoarthritis,
In particular, in addition to having sufficient functions as the above-mentioned footwear for the patient, in addition to such functions, it prevents the appearance from becoming strange in order to obtain those functions, and at the first glance while having the above-mentioned functions. The present invention relates to footwear for patients with knee osteoarthritis, which has the same appearance as ordinary footwear.

[0002]

2. Description of the Related Art As footwear which is said to be effective against diseases of the knee joint, there is an extremely low heeled shoe as shown in FIG. According to the description of this shoe, it is effective for patients who have a unique gait due to extremely weak leg muscles. Further, in other examples, there is a shoe as shown in FIG. 19 as Conventional Example 2, which is sold for muscle training.

Although not shown as Conventional Example 3, there is a known rocker shoe which is generally called a rocker shoe and whose bottom surface has an arc shape and which rocks back and forth like a cradle.

Further, there is a prior application of Japanese Patent Laid-Open No. 2-107243 by the same inventor as the present invention, in order to obtain a functionally superior one to the above conventional example. In this earlier application, the following theory is stated.

When a person walks and the heel starts landing, the line connecting the heel and the sole of the foot lands at an angle θ with respect to the ground as shown in FIG. 20 (a), so that the heel bone lands. 20 is pushed up by the impact of (1) to generate a rotational force centered on the ankle (ankle), and acts to bend the knee (to shake in the direction of arrow B) as shown in FIG. 20 (b). . In this way, the phenomenon that the knee is pushed up by the heel and bent one step at a time,
On the one hand, it can be said that it is the "natural shock absorption function" given to humankind. The force resisting the force of arrow A is the heel spring, and the force resisting the force of arrow B is the knee spring. On the other hand, however, the force (arrow A, arrow B) received by this spring acts in a bad direction such as bending the knee joint for patients with knee joint disease. Hereinafter, this phenomenon (the force of arrow A and the force of arrow B) is referred to as "the knee bending action of the heel".

The bending (that is, blurring) of the knee is repeated step by step, which causes wear of the knee joint of a patient with knee joint disease. As a solution to prevent this, in the prior application (JP-A-2-107243) by the same applicant as the present invention,
As shown in FIG. 17, a substantial heel rear end E is represented by a vertical line χ
It is provided close to −χ and is formed by cutting out a region behind it. This prevents the calcaneus from being pushed upward (in the direction of arrow A) as shown in FIG. 20 due to the impact of landing when a person walks and the heel starts to land,
This prevents the knee from bending in the direction of arrow B. In this way, walking without bending the knee, and if the knee bending can be landed without being repeated step by step, the disease of the knee joint is cured, and at least the progression of the disease can be prevented. The effect obtained by landing while keeping the knee joint in a non-flexed state is called "knee joint non-flexing effect". As described above, conventionally, there has been a shoe for a patient with knee joint disease invented by the inventors of the above application based on the above theory.

[0007]

The conventional shoes described above have the following problems. That is, as a conventional example 1, as shown in FIG. 18, there is a shoe with an extremely low heel of the shoe sole 102. According to the description of this shoe, a patient who walks peculiarly because the muscle strength of the leg is extremely decreased. It is said to be effective. However, except for such a unique patient, this shoe is unsuitable for the general patient. In addition, in such a shoe, the Achilles tendon is pulled due to lack of the “third state” shown in FIG. 2 (b) described below, and when this shoe is used regularly, the Achilles tendon extends and pulls. Not only does the effect (the “knee extension effect” described below) decrease, but it is difficult to walk when actually walking. Moreover, due to the above-mentioned habit, there is a problem that the rear part of the heel region cannot be set at an angle sufficient to achieve the intended purpose, and there is no choice but to endure at a small angle.

As a second conventional example, there is a shoe as shown in FIG. 19, which is sold for muscle training. However, this is an abnormal shape, and since force is exerted in the direction of stretching the knee, it may be a muscle training, but on the other hand, a cautionary note that the use of sick people is prohibited. That is, this is for the purpose of training a healthy person, and there is a problem that it is impossible for a sick person to wear it even if they actually wear it.

Further, as a conventional example 3, there is a well-known rocker shoe (not shown) having an arcuate sole, which has the effect of protecting the ankle part, but on the other hand, the ground point is Since it changes back and forth (due to the movement of a fulcrum described later), there is a problem in that it is unstable front and back and adversely affects the knees of patients with osteoarthritis of the knee, which is the subject of the present invention.

Further, in the shoe of the above-mentioned prior application by the same inventor as the present invention, a substantial heel lower surface rear end E is provided close to the vertical line χ-χ, as shown in FIG. As shown in the figure, the rear part from the rear end E is cut out so that it does not come out of the slant line A-A. Therefore, this slanted slope becomes a long slope, and in order to keep the step of human walking constant, The heel angle is naturally high because the inclination angle ρ cannot be small. If the inclination angle ρ is made small (for example, 15 degrees) in order to prevent the heel from becoming high, then as shown in FIG.
In the case of landing with the tip of the toe rising like the angle θ shown in 0 (a) or a gentle downhill, the rear part of the heel is directly hit by the arrow A and deteriorates the affected part. Therefore, it is inevitable that the angle ρ becomes excessively large (for example, 30 degrees) in consideration of landing with a tip of the toe and getting downhill, and the heel becomes high. For this reason, when the heel becomes high, the lower calcaneus b travels backward.

As described above, the above-mentioned phenomenon that the calcaneus travels rearward will be described with reference to the drawings. When comparing a conventional general high heel shoe (FIG. 21) with an extremely low heel shoe (FIG. 22), When the height becomes higher, the lower end a of the calcaneus travels backward by drawing an arc 103 with the ankle 50 as an axis.
This rearward protrusion of the calcaneus lower end a is a general feature of high heels, and is significantly different from the calcaneus lower end c in the case of low heels. Thus, the calcaneus lower end a in general high heel shoes
In the case of a low-heeled shoe, the phenomenon of traveling backward compared to the lower calcaneus c is referred to as "rear protrusion of heel".

FIG. 23 shows the relationship between the above-mentioned "heel rearward protrusion phenomenon" and heel height. In the figure, the distance that the lower calcaneus (the calcaneal end farthest from the ankle) a, b or c is away from the vertical line χ-χ is a function of the height of the heel. That is, when the ankle 50 is used as a rotation axis and the lengths R1, R2, and R3 reaching the lower ends of the calcaneus a, b, or c from this axis are hypotenuses and χ-χ is the bottom, it is located along the arc 103. The distance D at which the point a, b, or c moves away from the vertical line χ-χ has a relationship of D = R sin α, and the distance D increases as the heel becomes higher.
Therefore, the distance D is D1, D2, D3 depending on the heel height.
And change. This distance D may be considered as a rotation moment given to the rotation shaft 50. Therefore, the position a in the case of high heels is as shown in FIGS. 23 and 21, and the magnitude of the rotational force applied to the rotary shaft 50 is smaller than that in the position c (FIGS. 23 and 22) in the case of extremely low heels. Very differently, the above-mentioned adverse effect, "knee bending of the heel", increases with increasing heel height. Unfortunately, the prior application shown in FIG. 17 is also a kind of high heels, so that the general high heels (see FIG.
As shown in 1), even in the prior application of FIG. 17, a large amount of the calcaneus lower end b protrudes rearward, and the protrusion increases the phenomenon of being pushed up (arrow A) described in FIG. 20, but In order to secure the angle ρ (FIG. 17) described above, the heel becomes high, and the calcaneal end is located at the position b shown in FIG. 23 described above. If the heel becomes high, the above-mentioned defect “rear protrusion of the heel” occurs. There was a problem that it was unavoidable that the "phenomenon" affected.

Further, the shoes shown in FIGS. 17, 18 and 19 have a problem that they have a strange appearance due to their special function.

In addition, as an example of knee joint disease, varus knee (O
There are symptoms such as legs, crab crotch) and valgus knee (X leg),
In order to relieve or correct this symptom, a method is used in which a slope is provided inside the shoe sole to keep the inside (or outside) of the joint that you want to protect low, but the sloped surface on the sole like this is used. There is a problem that the cure rate of osteoarthritis of the knee is low only by means of forming, and at present, it does not save the worries of many patients.

Further, although the above-mentioned footwear is in the form of shoes, there is a problem that there is a need for footwear that can be used in hospitals and other rooms and that is easy and effective for the patient. The present invention has been made to solve the above problems, and enables patients with osteoarthritis of the knee to walk more easily and does not have a strange appearance, and is easily used indoors. The purpose is to provide footwear that can.

[0016]

DISCLOSURE OF THE INVENTION Footwear for patients with knee osteoarthritis according to the present invention is an instep which does not have a rear portion thereof,
In footwear made of sole material, a line connecting the lower surface of the sole material where the second metatarsal head of the sole material is located and the front end of the lower surface of the heel region of the sole material with the heel part thereof being in contact with the ground. With respect to the extension line of the horizontal line that connects the rear end of the lower surface of the heel region and the front end of the lower surface of the heel region, the thickness from the upper surface of the bottom material to the ground in the heel region is set to the front part of the heel region so as to rise from the horizontal line at an angle. In comparison, the rear of the heel region is formed to be thin, and the rear part of the heel region is provided with an impact absorbing mechanism such that the height of the heel of the surface contacting the human foot is lowered when a load is applied. Is.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the angle at which the bottom surface of the bottom material on which the second metatarsal head is located rises above the ground, and the heel portion of the footwear has a load of 7
It is an angle of at least 5 degrees when receiving 0 kg.

Further, according to the present invention, in the footwear for a patient with knee osteoarthritis, the impact absorbing mechanism is located at the heel of a human and easily elastically deforms under the load of the heel, at least a part of which is elastic. A heel-portion supporting elastic member or an upper layer member made of a material, and the surface of the upper layer member in contact with the heel of a human is lowered by its elastic deformation.

In the footwear for patients with knee osteoarthritis according to the present invention, the bottom material is a balance by a lower fulcrum located at the front end of the heel region and a horizontal member located above the lower fulcrum. A member is formed.

In the footwear for patients with knee osteoarthritis according to the present invention, the balance member receives the weight at the position of the metatarsal head and the position of the heel, and the balance is weighed with the lower fulcrum as a fulcrum. The horizontal length thereof substantially extends from the position of the calcaneus to the position of the metatarsal head so as to be carried in a shape.

Further, according to the present invention, in the footwear for a patient with knee osteoarthritis, the position of the lower fulcrum is measured from the rear end of the footwear body along the second metatarsal to the entire length of the footwear body. It is installed at a distance of 41% to 65%.

Further, the present invention provides the above-described footwear for patients with knee osteoarthritis, wherein the lower fulcrum forms a ridge line across the bottom surface of the bottom material, and the distance from the rear end of the heel of the ridge line is the second. The ridgeline on the little finger side is advanced compared to the ridgeline on the thumb side, measured parallel to the line connecting the metatarsal head and the center of the calcaneus.

In the footwear for patients with knee osteoarthritis according to the present invention, the shape of the bottom material bottom surface between the lower surface of the bottom material on which the second metatarsal head is located and the lower fulcrum is set to a side when the load is applied. When viewed from the side, it is formed in a substantially linear shape or a shape recessed upward.

In the footwear for patients with knee osteoarthritis according to the present invention, the shape of the bottom material bottom surface between the rear end of the lower surface of the heel region and the lower fulcrum is substantially viewed from the side when loaded. It is formed in a linear shape or a concave shape upward.

In the footwear for patients with knee osteoarthritis according to the present invention, the impact absorbing mechanism of the surface contacting the heel of the human has a knee that is a reaction force that the heel receives from the ground when the human walks. In order to achieve shock absorption in place of or beyond the shock absorbing function of the human knee, which bends forward and absorbs shock.

Also, in the present invention, in the footwear for patients with knee osteoarthritis, the elastic force of the heel portion supporting elastic member is
The elastic member can be easily elastically deformed as compared with each member forming the balance member.

Further, according to the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the difference in elastic force between the balance member and the heel-supporting elastic member is determined by the shape of bubbles, perforations, voids and recesses. It is formed by at least one of a size difference or a number difference, a cross-sectional area difference or a material elasticity difference.

The present invention also provides the above-mentioned footwear for patients with knee osteoarthritis, wherein the shock absorbing mechanism has an upper layer member provided on a foot pad when the surface in contact with the heel of a human being receives a load of 70 kg, or the above-mentioned member. The elastic deformation of the heel-portion supporting elastic member absorbs impact, and the height of the surface in contact with the lower end of the human heel causes a drop of at least 2% of the total length of the footwear.

According to the present invention, in the above-described footwear for patients with knee osteoarthritis, the shock absorbing mechanism is formed by forming at least a part of the shock absorbing mechanism with a shock absorbing material.

Further, according to the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the load is lowered from left to right when viewed from the rear so that the affected portion of the knee joint is lowered when loaded.
Alternatively, an inclined surface that decreases from right to left is formed on the upper surface of the stepping material.

Further, according to the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the inclined surface is formed on an upper layer member made of an elastic material provided on a stepping material of the footwear body.

Further, according to the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the inclined surface is formed so that a portion of the inclined surface which supports a human heel is elastically deformed more easily than other areas. It will be.

In the footwear for patients with knee osteoarthritis according to the present invention, the difference in the partial elastic force of the inclined surface is determined by the difference in size or number of bubbles, perforations, voids and recesses. Or the difference in elasticity of materials.

In the footwear for patients with knee osteoarthritis according to the present invention, in the heel portion supporting elastic member, a portion carrying the lower side of the inclined surface carries a portion carrying the higher side of the inclined surface. The lower side supporting portion and the higher side supporting portion are provided with a difference in elastic force so that they can be easily lowered as compared with the above.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the difference in the partial elastic force of the elastic member for supporting the heel portion can be determined by the shapes of bubbles, perforations, voids and recesses. It is formed by at least one of a difference or a difference in number, a difference in cross-sectional area, or a difference in elasticity of materials.

Further, according to the present invention, in the footwear for a patient with knee osteoarthritis, there is provided a decorative heel-shape forming member behind the heel-supporting elastic member, which is more easily elastically deformed than the heel-supporting elastic member. It will be done.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the position of the rear end of the lower surface of the heel-supporting elastic member is at least 5% of the total length of the footwear from the rear end of the footwear. Is.

Further, according to the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the balance member formed between the upper surface of the sole and the ground contact surface, the heel portion supporting elastic member, and the decorative heel shape formation. The space of each member and the space between the members are filled with an elastic material whose elastic force is weaker than that of each member.

In the footwear for patients with knee osteoarthritis according to the present invention, the shape of a decorative base material made of an elastic material that is easily elastically deformed on the bottom surface of the base material where the raised second metatarsal head is located. It has a forming member.

The present invention also provides the above-mentioned footwear for patients with knee osteoarthritis, of the insole, bottom elastic member for bottom material, bottom cover material, and upper layer member, balance member, elastic member for supporting heels. At least two members are covered with a covering material so that the appearance is shown as one.

[0041]

According to the present invention, in footwear comprising an instep and a sole without a rear portion thereof, the sole on which the second metatarsal head of the sole is located, with a load applied to the heel of the sole. A line that connects the lower surface of the material and the front end of the lower surface of the heel area of the bottom material,
The thickness from the upper surface of the bottom material to the ground in the heel region is such that the thickness of the heel region in front of the heel region rises from the horizontal line connecting the rear end of the heel region lower surface and the front end of the heel region lower surface with an angle with respect to the extension line of the horizontal line. The rear part of the heel region is formed to be thinner than the rear part of the heel region, and the rear part of the heel region is provided with an impact absorbing mechanism such that the height of the heel part of the surface contacting the human foot is lowered when a load is applied. Therefore, the "support effect close to the vertical line" obtained by the bottom material bottom surface where the metatarsal head is located at the time of landing is lifted from the horizontal line can prevent "posterior protrusion phenomenon of the heel", and the calcaneus will be released at the moment of landing. It is possible to reduce the "knee bending effect of the heel" in which the knee is pushed up and bent. It also has a shock absorbing mechanism to compensate for the loss of the "natural shock absorbing function" inherent in humankind, which is inevitably caused by its action.
The loss of the above "natural shock absorbing function" can be compensated for, and the fall of the heel part further lifts the toes, and "knee extension effect" can be generated.

According to the present invention, in the footwear for patients with knee osteoarthritis, the lower surface of the sole material on which the second metatarsal head is located is lifted from the ground, and the heel of the footwear receives a load of 70 kg. Since the angle is set to at least 5 degrees in the closed state, it is possible to reduce the "knee bending effect of the heel".

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, at least a part of the impact absorbing mechanism is located at the heel of a human and easily elastically deforms under the load of the heel. Since it has a heel-supporting elastic member or an upper layer member made of an elastic material, and the surface of the upper layer member in contact with the human heel part is lowered by its elastic deformation,
The "natural shock absorption function" can be compensated.

Further, in the present invention, in the footwear for patients with knee osteoarthritis, the sole is composed of a lower fulcrum located at the front end of the heel region and a horizontal member located above the lower fulcrum. Since the balance member is formed,
The weight is supported like a balance, and the weight can be transferred with a small burden.

Further, in the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the balance member receives the weight at the position of the metatarsal head and the position of the heel, and the weight is set with the lower fulcrum as a fulcrum. In order to carry it in a balance-like manner, its horizontal length is assumed to substantially reach the position of the metatarsal head from the position of the calcaneus, so that the weight is supported in a balance-like manner and the above-mentioned action is ensured. can do.

In the present invention, in the footwear for patients with knee osteoarthritis, the position of the lower fulcrum is measured from the rear end of the footwear body along the second metatarsal bone to the entire length of the footwear body. Since it was installed at a distance of 41% to 65%,
The balance member has a balance function, and the above operation can be made more effective.

According to the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the lower fulcrum forms a ridge line across the bottom surface of the bottom material, and the distance from the heel rear end of the ridge line is 2 Measured parallel to the line connecting the metatarsal head and the center of the calcaneus, the ridgeline on the little finger side is moved forward as compared with the ridgeline on the thumb side, so that symptoms such as the O-leg can be corrected.

Further, in the present invention, in the footwear for patients with knee osteoarthritis, the bottom material bottom surface between the lower surface of the bottom material on which the second metatarsal head is located and the lower fulcrum is formed,
Since it is formed to be substantially linear or recessed upward when viewed from the side when loaded, it is possible to prevent the lower fulcrum from moving while the weight is moving.

According to the present invention, in the footwear for patients with knee osteoarthritis, the shape of the bottom material bottom surface between the rear end of the lower surface of the heel region and the lower fulcrum is substantially viewed from the side when loaded. Since it is formed in a linear shape or a shape that is recessed upward, the above-mentioned rising angle can be accurately held so as not to swing back and forth.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the impact absorbing mechanism of the surface contacting the heel of the human is a reaction force received from the ground by the heel when the human walks. Since the knee bends forward and absorbs impact, instead of or beyond the impact absorption function of the human knee, it achieves shock absorption.
The "loss of natural shock absorption" can be fully compensated.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the elastic force of the heel-supporting elastic member can be easily elastically deformed as compared with each member forming the balance member. Therefore, the impact absorbing mechanism and the weight carrying mechanism can be obtained.

Further, in the present invention, in the footwear for patients with knee osteoarthritis, the difference in elastic force between the balance member and the heel-supporting elastic member is determined by the shapes of bubbles, perforations, voids and recesses. The impact absorbing mechanism and the weight carrying mechanism can be obtained by at least one of the difference in size or the number, the difference in cross-sectional area or the difference in material elasticity.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the shock absorbing mechanism has an upper layer member or a foot member provided on a foot pad when a surface in contact with a human heel receives a load of 70 kg. Since the impact is absorbed by the elastic deformation of the heel portion supporting elastic member and the height of the surface in contact with the lower end of the human heel causes a drop of at least 2% of the total length of the footwear, the "natural impact absorbing function" Loss of
Can be fully compensated.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, since the shock absorbing mechanism has at least a part of the shock absorbing mechanism formed of a shock absorbing material, It is possible to absorb the initial impact when landing.

Further, in the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, when the load is applied, the affected portion of the knee joint is lowered so that it is lowered from left to right when viewed from the rear or from the right. Since the inclined surface that is lowered to the left is formed on the upper surface of the footing material, the axial direction of each bone that connects the upper and lower joints can be corrected to a direction that protects the affected side of the knee joint.

According to the present invention, in the footwear for patients with knee osteoarthritis, the inclined surface is formed in the upper layer member made of an elastic material provided on the footing material of the footwear body. , It is possible to absorb the impact when landing.

According to the present invention, in the footwear for patients with knee osteoarthritis, the inclined surface is formed so that the portion of the inclined surface for supporting the human heel is elastically deformed more easily than other areas. Therefore, in addition to the above-mentioned action, the initial impact at the time of landing can be absorbed.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the difference in the partial elastic force of the inclined surface is determined by the difference in the size of bubbles, perforations, voids and recesses or Since it is formed by at least one of the difference in the number or the difference in elasticity of the materials, the difference in elastic force for obtaining the above action can be adjusted appropriately.

Further, in the present invention, in the above-mentioned footwear for a patient with knee osteoarthritis, the elastic member for supporting the heel is
A difference is provided in the elastic force between the low-side supporting portion and the high-side supporting portion so that the portion supporting the low-side of the inclined surface can be easily lowered as compared with the portion supporting the high-side of the inclined surface. Therefore, in addition to the effect of correcting the knee joint by the inclined surface, the "unequal descent of the heel" that occurs as a result can be prevented.

Further, according to the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the difference in partial elastic force of the elastic member for supporting the heel part is determined by the size of bubbles, perforations, voids and recesses. Since it is formed by at least one of the difference in the number or the number, the difference in the cross-sectional area, or the difference in the elasticity of the material, the difference in the elastic force for obtaining the above-mentioned action can be appropriately adjusted.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, there is provided a decorative heel-shape forming member which is more easily elastically deformed than the heel-supporting elastic member behind the heel-supporting elastic member. Therefore, even if the heel is substantially located at the special position for obtaining the above-mentioned “support effect close to the vertical line”, the appearance of the heel should be the same as that of normal footwear. You can

In the present invention, in the footwear for patients with knee osteoarthritis, the position of the rear end of the lower surface of the heel-supporting elastic member is at least 5% of the total length of the footwear from the rear end of the footwear. From, "Supporting effect close to the vertical line"
Can be obtained.

According to the present invention, in the footwear for patients with knee osteoarthritis, the balance member, the heel portion supporting elastic member, and the decorative heel shape formed between the upper surface of the sole and the ground contact surface. Since the space which each member of the forming member has and the space between each member are filled with the elastic material whose elastic force is weaker than that of each member, the appearance can be adjusted.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, a decorative sole material made of an elastic material that is easily elastically deformed on the bottom surface of the sole material on which the raised second metatarsal head is located. Since the shape forming member is included, the appearance can be adjusted.

Further, in the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, an insole, a front elastic member of a sole material,
At least two of the bottom cover material, the upper layer member, the balance member, and the heel portion supporting elastic member are covered with a covering material to make the appearance look integral, so that the constituent members can be prevented from being exposed.

[0066]

EXAMPLES Examples of the present invention will be described below. Examples 1 to 5 will be described based on examples having a shoe shape. In addition, in Examples 6 to 10, footwear having no rear part of the upper (cover) will be described. Some footwear that does not have a rear part of the instep may have an instep morphology such as "grip", "sandals", etc. Here, as an example, an example of an instep morphology similar to slippers is given. I will explain below.

Example 1. FIGS. 1, 2 (a), (b) and (c) are views showing a state of a state when walking while wearing shoes for a patient with knee joint disease according to an embodiment of the present invention. FIG. 7 is a sectional view showing from a “first state” to a “fourth state”, which will be described later, in order from the kicking up.

FIGS. 3 (a) and 3 (b) show the shoe of Example 1 of the present invention when there is no load, and FIG. 3 (c) is a bottom view of the shoe sole. FIG.
(a) is a vertical cross-sectional view taken along the chain line vv of FIG. 3 (c),
FIG. 3B is a side view showing the outer appearance of the shoe of the first embodiment.

In FIG. 1, 100 is the shoe body, 101 is the upper, 102 is the sole, 3 is the elastic member at the front of the sole, and 4 is a region rearward from the front end (lower fulcrum described later) of the ground contact surface of the heel. Heel region, 5 is a lower fulcrum which is a fulcrum for supporting a load in a balance-like manner in a "second state" described later, and 6 is a balance-like support for a load applied to the metatarsal head and the heel of the shoe upper surface. The horizontal member 3a that plays the role of a balance is formed by connecting the lower fulcrum 5 and the horizontal member 6 to each other, and the column member is made of a material that is less elastically deformed than the heel region, and 7 is located below the head of the metatarsal bone. The lower surface of the shoe sole, 8 is the horizontal member 6 and the pillar member 3
It is a balance member including a and a. 9 is an internal member formed on the sole of the shoe, 20 is the heel of the human, 30 is the head of the second metatarsal bone of the human, 40 is the second metatarsal of the human, 50 is the center of the human ankle, 3c Is a shoe bottom cover material, 4a is a heel-supporting elastic member that is substantially a heel, 9a is the upper surface of the inner member 9 at the position where the human heel is in contact, and e is the rear end of the lower surface of the heel-supporting elastic member 4a. .

Although the bottom surface is covered with the bottom cover material 3c, the internal structure as shown in the sectional view cannot be seen from the bottom surface, but for convenience of explanation, the lower fulcrum 5 described later and the lower surface of the heel portion supporting elastic member 4a described later are provided. The description of the end e will be made by ignoring the existence of the bottom cover material 3c. As another modification, the presence of the bottom cover material 3c may be omitted and the lower fulcrum 5 may be in direct contact with the ground, and the presence or absence of the bottom cover material 3c does not relate to the essential function. Here, the bottom cover material may be integrally formed with the shoe sole front elastic member 3 and / or the heel portion supporting elastic member 4a described later. If the bottom cover material 3c is omitted, the internal structure is exposed, so that the balance member 8 and the heel portion carrying elastic member formed between the upper surface of the shoe sole and the ground contact surface are exposed, as will be described later in the fifth embodiment. The space of each member of the member 4a, the decorative heel shape forming member 4b described later, and the space between the members may be filled with an elastic material having an elastic force weaker than that of each member to adjust the outer shape.

FIG. 1 is a sectional view showing a landing start state in which a load is applied to the heel portion. The inner member 9 is formed so as to be lowered by at least 2% or more, or 5% in this embodiment, with respect to the entire length of the shoe when a load of 70 kg is applied to the lower end of the heel of the human. Further, with respect to an extension line (horizontal line) of a line connecting the lower surface rear end of the heel area and the heel area lower surface front end 5 with respect to the heel area lower surface front end 5 and the metatarsal head 30, the sole bottom surface located below. The line connecting 7 and 7 rises above the horizon at an angle of 12 degrees. This is due to the difference in thickness from the upper surface of the sole to the ground in the heel region 4. That is, the front edge of the lower surface of the heel area (lower fulcrum 5)
This is because the rear portion of the heel region is formed thinner than the thickness in the vicinity. The state as shown in FIG. 1 in which the metatarsal head is lifted by receiving the load on the heel portion as described above is referred to as “first state”.

As shown in FIG. 1, the angle at which the second metatarsal head floats up with respect to the horizontal line when loaded is at least 5 degrees, preferably 6 degrees, 7 degrees or more when the heel is loaded. Set. However, it is preferably larger.
In this embodiment, the lifting angle is set to 12 degrees. According to the experiment, even if it is set to 8 degrees, 10 degrees, 15 degrees, 20 degrees, etc., it is functionally good except that the design becomes worse in proportion to the increase of the angle.

In this embodiment, the line (oblique side) R4 connecting the ankle and the calcaneus lower end d shown in FIGS. 1 and 23 is increased by the above-mentioned χ by increasing the lifting angle of the second metatarsal head.
-When approaching χ, the above "supporting effect close to the vertical line" provides the "non-flexing effect of the knee joint", and the "knee extension effect" described below also occurs to prevent abrasion of the knee joint, The effect described in [Effect 1] is produced.

In the experiment of this embodiment, the rising angle is set to 12 degrees. If the angle is too small, the effect will be poor, and if the angle is too large, the effect will be great, but the design will be poor. Based on the results of trials with 20 patients at the time of filing this application, the gait habits of patients are mixed and the medical conditions are light and severe, so it depends on what patients and what medical conditions are targeted. , Each angle shall be selected.

In the embodiment of the present invention, the "lower knee flexion effect" is sought to bring the calcaneus lower end d closer to the vertical line χ-χ so that the toes are lifted from the ground. In order to lose the "natural shock absorption function" by losing the spring of the arrow A or the arrow B described in the "Prior Art" section,
In order to compensate for this, the heel region 4 is designed so that the height of the surface of the heel portion in contact with the lower end of the heel of the human is lowered by the above load, and absorbs the impact at the start of landing. The shock absorption mechanism is special and requires a completely different function from the shock absorption of sports shoes. That is, the patient has a knee ailment and withstands pain, so walks quietly and lands with a load that is closer to a static load than a sports person. It is preferable to actively protect such a weak patient and provide a sufficient shock absorbing mechanism so that a patient suffering from pain and suffering one by one can land more gently than a healthy person. On the other hand, sports shoes or the like are subjected to an acceleration load to which speed is applied, and a strong load, such as four times the weight, is received when jumping or the like. Since the shock absorbing mechanism of the sports shoe is designed to have a structure that elastically deforms by such a strong force, it does not elastically deform sufficiently when the patient quietly lands.

A structure capable of being elastically deformed even in such a quiet landing will be described below. That is, the heel portion supporting elastic member 4a is formed of a material that is easily elastically deformed, and is deformed from the state of FIG. 3 (a) to the state of FIG. 1 by a load. As a material that is easily elastically deformed, an E.I. V.
A. A soft foam material called (ethylene vinyl acrylic) resin was used. In order to test how soft, 10 mm × 10 mm × 10 mm of this material was sampled, inserted between the fingers and pressed, and it was easily compressed to a quarter. This is exceptional softness as a shoe material.

Comparing the elasticity of this material with the elasticity of the heel region of a sports shoe, the heel of a sports shoe that withstands four times the weight of a sports shoe is in principle never easily elastically deformed under such a weak static load. is there. In the present invention, the heel-supporting elastic member 4a, which has an important role in absorbing the impact at the initial stage of landing, starts contacting with the ground at the moment of contact with the ground, where the weight is not yet applied, and the weight is fully loaded. The weight is carried by the lower fulcrum 5 (in other words, the balance member 8)
Since the load on the heel-supporting elastic member 4a is reduced, the heel-supporting elastic member 4a can be formed of the above-mentioned abnormally soft material, contrary to the common sense of shoes.

When the inner member 9 provided inside the shoe body is also made of an elastic material, the surface 9a for receiving the heel of the human is slightly recessed to help absorb shock. Since the thickness of the inner member 9 is not as thick as that of the heel portion supporting elastic member 4a, the shock absorbing function is not so large as that of the heel portion supporting elastic member, but as shown in FIG. 10 which will be described later, it is considerably thick on the high slope side. , Effective for shock absorption. As described above, the embodiment shown in FIGS. 1 and 2 shows an example in which the inner member 9 is made of an elastic material, and the human foot is lowered by the inner surface 9a of the inner member 9 located at the lower end of the heel. Measure with a descent. In each of the embodiments described below, the elastic material for absorbing shock may be partially replaced with the shock absorbing material if necessary.

The heel portion 9a on the surface of the inner member 9 is desired to have a shock absorbing mechanism capable of compensating for the loss of the aforementioned "natural shock absorbing function of humankind".
The material of a is sufficiently elastically deformable, and for example, the static load applied to the surface 9a of the calcaneus portion of the internal member 9 is 70
In the case of kg, the total length of the shoe is 250 mm, and the descending dimension is set to 12.5 mm in this embodiment, which is 5% of the total length of the shoe. 2%, 3%, 4% of total shoe length
I tried 5%. The larger the descending dimension, the better the shock absorbing function, so there is no upper limit of about 10%, but at least 2% or more, preferably 3% or more, preferably 4%.
As mentioned above, the patients say that 5% of this example can obtain almost satisfactory shock absorption.

Based on the results of trials with 20 patients at the time of filing of this application, since the gait habits of patients are variable and the medical conditions are light and heavy, it is intended for which patients and what medical conditions. Each drop size shall be selected depending on whether

The fact that the inner member 9 is made of an elastic material as described above greatly contributes to shock absorption. Therefore, as an example, the inner member 9 is naturally made of an elastic material, and the value of the fall is also shown by the value of the drop on the surface of the inner member 9a at the heel. However, the inner member 9 is a replaceable insert material having a special shape for a special purpose, and in the distribution stage, the inner member 9 may be handled as a replaceable separately sold. In such a case where the internal member is lacking in circulation, the descent function cannot be indicated by the descent value of the surface of the internal member of the calcaneus portion, and therefore, it may be measured at the rear end of the upper surface of the shoe sole instead. In that case, since the amount of compressive deformation of the internal member 9 itself is lacking, the numerical value becomes smaller accordingly. The larger the number, the better the shock absorption function, but at least 0.5% or more of the total shoe length,
It is preferably set to 1.0% or more, and 2.5% in this embodiment. However, this value is the value without internal members.

Further, in order that the heel-portion supporting elastic member 4a may be deformed more easily than the balance member 8, a difference is provided in the ease of elastic deformation between the heel-portion supporting elastic member 4a and the balance member 8, but this difference is It is to be formed by at least one of a difference in size or number of shapes of bubbles, perforations, cavities, and recesses, and difference in cross-sectional area or difference in material.

Further, the lower surface of the sole between the rear end of the lower surface of the heel area and the lower fulcrum is hereinafter referred to as the lower surface of the heel area, and this portion is substantially linear or upwardly recessed when viewed from the side when loaded. Is preferred. For example, as shown in FIG. 4, the heel region of this modification is an example in which the heel region is slightly recessed upward. When it is unavoidable that the heel region is formed to have a loose downward projection, the heel region is not shown here, and is likely to be substantially straight when viewed from the side. Providing at least one of the recess and the flexible material to facilitate the recess results in a straight line. Thus, this portion is formed substantially linearly as shown in FIG. 3 (a), or is formed so as to be recessed upward as shown in FIG. 4, or is formed so as to be easily recessed upward. Thus, at the start of landing, as shown in FIG. 1, both the rear end of the lower surface of the heel region and the lower fulcrum 5 are in contact with the horizontal line and are stable in the front-rear direction, and never swing. This is a big difference from the rocker shoes described above as Conventional Example 3.

FIG. 2A shows the "second state", and FIG.
The state in which the weight gradually shifts from the landing start state “first state” and the weight is supported by the lower fulcrum 5 at the front end of the lower surface of the heel region. The weight is mainly the human heel 20 and the metatarsal head 30. And is supported by a balance member 8 composed of a horizontal member 6 and a support member 3a in a balance shape.
It concentrates on the lower fulcrum 5.

Unlike a normal shoe, for example, a patient weighing 70 kg can support a total weight of 70 kg like a balance, and the horizontal member 6 connects the heel 20 and the metatarsal head 30 so as to withstand the weight. It is provided in. Since the function of the horizontal member 6 is enhanced also by the support member 3a described in the next section,
The function of the horizontal member 6 is considered to be combined with a support member 3a described later, and supports the load in a T shape or an inverted triangle shape. The T-shape and the inverted triangle here are not necessarily symmetrical with respect to the lower fulcrum, and the lower fulcrum is often biased forward. The horizontal member 6 and the support member 3a are collectively referred to as a balance member 8 below. The strength of the balance member 8 is such that, when a load of 15 kg is supported at the position of the second metatarsal head 30 by the balance end, the sagging of the shoe sole lower surface 7 at the position of the metatarsal head 30 does not exceed 5 mm. So that it has a carrying force. It is preferable that it can be less than 4 mm. In this embodiment, the sagging under load is suppressed to 3 mm. Although the horizontal member 6 and the support member 3a have been mentioned as members that contribute to the strength of the balance member 8, in addition to this, if the insole 3m is made of a hard material up to near the metatarsal head, the carrying force of the balance member 8 is enhanced. To help.

Further, in the present embodiment, the position of the lower fulcrum 5 is set at a distance of 50% with respect to the entire length of the shoe main body as measured along the line passing from the rear end of the shoe main body to the second metatarsal head 30. I am doing it. The ridgeline formed by the lower fulcrum 5 on the lower surface of the shoe sole is formed by advancing the little finger side more than the thumb side, as shown by the solid line 5-5 in FIG. 3 (c).

As described above, in this embodiment, the lower fulcrum 5 and the horizontal member 6 are connected by the support member 3a so as to support the horizontal member 6, and the balance member 8 is connected by the support member 3a and the horizontal member 6. Although it is formed, in order to reduce the manufacturing cost,
The pillar member 3a and the horizontal member 6 are not separately formed,
It is also possible to integrally form the same material.

If the hanging down of the balance member 8 is large, the balance function is lost. The size from the lower fulcrum 5 of the balance member 8 to the upper part of the balance may be increased (the height of the balance fulcrum is increased) to compensate for the loss due to sagging, but if the height of the column member 3a is high, it is designed. It becomes unsightly. If you want to put up with it, let it hang more than the above 5mm,
The strut members may be raised. This sagging value is a value when a load is applied only to the position of the metatarsal head 30 for measurement, and in reality, such a one-point intensive load is not applied, and the entire sole Actually, it does not droop so much because it supports the weight. In this embodiment, the sag when the above-mentioned one-point intensive load is applied is 3
Although it is suppressed to mm, it is preferable that the amount of sag is even smaller if possible. The above drooping dimension is based on the results of trials with 20 patients at the time of filing of this application, but the required drooping dimension is taken into consideration considering that the walking habits of patients are mixed and the medical condition is light and heavy. I shall.

The balance member 8 is preferably formed of a material that does not elastically deform as compared with the heel portion supporting elastic member 4a.

A modified example in which the structure is simplified is shown for the purpose of reducing the manufacturing cost. In this modified example, the shoe sole front elastic member 3, the strut member 3a, and the heel portion supporting elastic member 4a are made of the same material and are shown in FIGS. 5 (a) and 5 (b).

In FIG. 5, the column member portion 3b, which is a portion corresponding to the column member 3a, is a heel portion supporting elastic member 4.
It is integrally formed of the same material as a. However, as shown in FIGS. 5 (a) and 5 (b), there is a difference in elastic force between the column member portion 3b and the heel portion supporting elastic member 4a due to the difference in cross-sectional area. In other words, the pillar member portion 3b is formed without providing a void, while the heel portion supporting elastic member 4a is provided with a void 4C,
The cross-sectional area is reduced by 4M. Therefore, the column member 3b is not elastically deformed as compared with the heel portion supporting elastic member 4a. However, the function of the strut member 3a shown in FIG. 2 has a function of reinforcing the strength of the balance member 8 in addition to the function of acting as a strut without being deformed as compared with the heel portion supporting elastic member 4a. Therefore, when the pillar member portion 3b is made of the same material as the heel portion supporting elastic member 4a as shown in FIG.
It is preferable to use one having sufficient strength. In order to reduce the manufacturing cost, the horizontal member 6 may be omitted and instead the horizontal member 3m having a sufficient strength may be used as the horizontal member. In the modified example of FIG. 5, the lower fulcrum 5 portion is likely to receive a load and be dented, and the position of the lower fulcrum 5 tends to be indefinite. When the position of the lower fulcrum 5 becomes indefinite, the fulcrum moves as the legs advance, and the lower fulcrum 5 moves forward to make walking difficult (the adverse effect of the movement of the fulcrum will be described later).
Therefore, it is not so preferable to form the support member portion 3b with a soft material. However, if the strut member 3b and the heel portion supporting elastic member 4a are made of a common slightly hard material in order to avoid the movement of the fulcrum, the heel portion supporting elastic member 4a does not sufficiently elastically deform. In order to prevent such an adverse effect, in this modification, the cross-sectional area of the heel portion supporting elastic member 4a is made small (a space is provided) to facilitate elastic deformation.

In addition, the position of the lower fulcrum 5 is 50% of the total length of the shoe main body as measured from the rear end of the shoe main body in the figure. In reality, 40% is sufficient if the doctor can explain the function to the patient and the patient can understand it well and can walk properly from the heel to the ground. However, the patient did not understand the doctor's explanation, so
There were also patients who "walk around their toes" as shown in (Conventional example). It was most often found in young, muscular patients. In order to eliminate the presence of such misused patients, the lower fulcrum 5 was set forward by an extra amount. The position of the lower fulcrum 5 was tried to be 41%, 43%, 45%, 47%,
As the number increased, the presence of misused patients decreased.
In the experiment, the position was set to 50%, so there were no misused patients with a few exceptions. Therefore, the above lower fulcrum 5
The positions of 55%, 58%, 61% and 63% were tried. As a result, as the number increases, the number of abusers decreases, and the knee stretching effect increases, but the patient complains that he / she is forced to stretch his knees and is prone to fatigue during long-distance walking. Even if the patients put up with it, more than 65% said that elderly patients were too tired to walk. The position of the lower fulcrum 5 is determined depending on what kind of patient and what kind of medical condition is targeted.

FIG. 3 (c) is a view of the shoe of this embodiment seen from the sole. In a general shoe structure, the floor separation point where the front part of the shoe sole curves upward and separates from the ground is that the floor separation point on the little finger side is shorter than that on the thumb side (the shortest on the little finger side, measured from the rear end of the heel). So it's short and backwards.
However, in the embodiment of the present invention, the position of the lower fulcrum 5 forms a ridge line 5-5 that crosses the bottom surface of the shoe sole, as shown by a solid line 5-5 in FIG. 3 (c). The ridgeline on the little finger side, which is measured from the rear end of the heel, is longer than the ridgeline on the thumb side, and is positioned forward. This is the opposite of the ordinary shoes mentioned above. The theory that led to such setting was discovered in the course of the trial manufacture experiment of the present invention. As will be described later in the third embodiment, the theory is to reduce the push-up action from the ground that the affected side of the knee joint receives.
That is, when the legs gradually move and the balance member 8 tilts forward,
Weight is supported more on the little finger side where the ridge line travels forward, and less on the thumb side where the ridge line recedes. Therefore, there is an effect of reducing the load on the affected side of the O-leg patient. However, this theory applies to the O-leg that is common in Japanese, and does not apply to patients without the O-leg.

FIG. 2 (b) shows the "third state", in which the weight of the human being is supported in a balance-like form as shown in FIG. 2 (a).
Gradually moving from the “state” to the weight of the second metatarsal head 3
0 shows the state of being supported by a substantially straight line portion between the bottom surface 7 of the shoe sole 0 and the lower fulcrum 5.

Since the position of the lower fulcrum 5 is almost in the center of the entire shoe and the foot is supported in a balance-like manner, the movement from the "second state" to the "third state" merely involves tilting of the balance. It operates and has little resistance.

The reason why the resistance to the movement from the "second state" to the "third state" is small is that, as shown in FIG. 2 (b), the lower sole 7 and the lower fulcrum 5 of the shoe sole of the metatarsal head are shown. This is because they are connected in a substantially straight line when viewed from the side, and there is no resistance in moving from the state of FIG. 2 (a) to that of FIG. 2 (b). If, as shown in FIGS. 6 (a) and 6 (b), the space between the lower surface 7 of the shoe sole of the metatarsal head and the lower fulcrum 5 is formed as a curve that projects loosely when viewed from the side, the shoe is designed. However, as shown in Fig. 6 (b), the front of the lower fulcrum 5 functions like a loose roller, and the ground contact point moves like a roller while moving forward 5f. It moves forward, and the fact that the ground contact moves like 5f is
The same result as the movement of the lower fulcrum 5 is brought about, which makes walking difficult. Originally, the position of the lower fulcrum 5 is set within the range of 41% to 65% as described above by referring to the request from the patient and the medical condition of the patient, and is set to the best position that the doctor thinks is most appropriate. The best position should never move. For that purpose, the space between the lower surface 7 of the shoe sole where the second metatarsal head 30 is located and the lower fulcrum 5 should be substantially linear or upwardly recessed when viewed from the side during loading. preferable. FIG. 7 shows a modified example in which the shape is thus recessed upward. Also, as will be described later, when it is unavoidable to form a loose downward projection for the convenience of design, it is likely to be dented by the load and become a straight line as shown in FIG. Lower fulcrum 5
It is preferable that at least one of a bubble, a perforation, a void, a recess, or a soft material is provided between the first and the second so as to facilitate the recess. In this case, the column member 3a is not deformed. In comparison, the front portion, which is more likely to be recessed, is compressed by the load and is deformed linearly, so that the lower fulcrum can be prevented from moving. In this way, when the space between the bottom surface 7 of the shoe sole and the lower fulcrum 5 is substantially brought into the state of FIG. 2 (b) by the straightening by the load, or in the case of forming the shape of FIG. 2 (b) from the beginning, Alternatively, in common with the case where the shape is recessed upward as shown in FIG. 7, the transition from the “first state” to the “third state” through the “second state” is as follows. It has been confirmed by an experiment with a sick person that it is an easy operation that simply changes the tilt of the balance.

As shown in the figure, the lower fulcrum 5 is functionally required to form a corner so as to act as a fulcrum. Although this corner is a blunt angle, it is still more prone to wear than other parts. In order to prevent this, even if the corner is slightly cut (cornered corner), there is no problem as long as the function as a fulcrum is not lost. If the presence of corners is disliked, a decorative shoe sole shape forming member made of a soft material is formed in advance so as to fill the part that is lifted forward from the corner (lower fulcrum 5), and the "third state" is formed. In this state, the load may be carried and the recess may be recessed upward as described above. Since this is only a fake decorative member for the above purpose, a soft material that can be elastically deformed sufficiently so as not to interfere with the basic function of the present invention is selected, and all the raised portions are shown so that the raised angle looks like zero. May be filled, and any uplift angle (eg 3
).

The state shown in FIG. 2 (b) is similar to the state in which a normal high-heeled shoe is put on with the balance member 8 tilted forward, and the heel is higher than in the first and second states. It is in a slightly raised state. This state is the opposite of the state in which the Achilles tendon is forcibly pulled as described in Conventional Example 1, and the state can be gently shifted to the next "fourth state" (kicking out) without pulling the Achilles tendon. In this way, the "third state" in which the Achilles tendon is not pulled and the state is prepared to easily move to the "fourth state" (kicking out) is hereinafter referred to as "high heel type bed leaving preparation state". The present invention is based on the principle of lowering the heel, but the "high heel type bed preparation state" that allows not pulling forcibly the Achilles tendon despite such a low heel is a normal deformation. Prevention of the progression of osteoarthritis of the knee by preventing or correcting the bent habit of implantation of the knee in patients with gonarthrosis, in other words, the bad habit of implantation such as extension of the Achilles tendon. And is effective in reducing pain.

FIG. 2 (c) shows the "fourth state", in which the weight of the human gradually moves from the "third state" in FIG. 2 (b) to kick the ground with the fingertip. At this time, the void 3F is provided so that the shoe sole can be easily bent, and the shoe can flex flexibly to facilitate kicking.

With the structure shown in the above embodiment, when the landing is started, the lower surface of the heel area is in the "first state" shown in FIG.
As shown in, the bottom surface 7 of the sole of the metatarsal head rises above the horizontal line, and the height of the top surface of the sole becomes extremely low rearward, so that the line connecting the center 50 of the ankle and the lower calcaneus d ( The hypotenuse R4) shown in FIG. 1 approaches the vertical line .chi .-. Chi., And the calcaneus lower end d is positioned as close to the vertical line as possible, as indicated by the symbol d in FIGS. The position of this d is a low position that passes through the position c (FIG. 23) of the above-mentioned extremely low-heeled shoe, and as described in [Problems to be solved by the invention], the distance from the vertical line D = By reducing the value of D represented by R sinα, it is possible to reduce the bad force exerted on the knee "the knee bending effect of the heel" (this is called the "support effect close to the vertical line").

When the landing is started with the tip of the toe thus raised (the front part of the foot floating in the air), another effect is produced. In FIG. 1, when a force that lowers the heel acts as an arrow G, and thus acts to lift the sole of the metatarsal head into the air, this is the same as the above-mentioned harmful landing impact (arrows A and B). The force is exactly opposite in direction. Therefore, the force of arrow G is a harmful landing impact (arrow A,
It acts to antagonize or push back the force of B) to generate a beneficial force at the start of landing. The "toe raising effect" produced by the force of this arrow G acts as a supplementary effect to the main effect of the above-mentioned "support effect close to the vertical line", and acts synergistically to generate a "knee extension effect". Can be made.

On the other hand, in order to compensate for the natural human impact absorption function lost by the above-mentioned "knee joint non-flexing effect", a special impact absorption structure is provided in this embodiment to create a special situation. It is possible to give a shock-absorbing function that is gentle to the sick and ill, beyond the natural shock-absorbing function of human beings, while giving a very suitable shock-absorbing power to the placed patient. The effect "can be increased.

Next, as shown in FIG. 2A, the balance-like state "second
Then, the balance weight formed on the shoe sole has a strength of 15 at the position of the metatarsal head.
It is set so that the sag of the balance member does not exceed 5 mm when a load of kg is applied, and the length of the horizontal member 6 provided above the balance member is set from the heel portion 20 to the metatarsal head 3
Since the length reaches 0, the weight can be supported by the member in a balance shape, and the weight can be moved smoothly. Further, in the state of this embodiment, since the lower fulcrum 5 is located at a position approximately half of the total length of the shoe, it is in a state in which the mechanical load is small, and even a sick person with weak leg muscles can easily perform the "first state". From the lower fulcrum 5 to the lower surface 7 of the sole where the metatarsal head is located.
By making the sole of the shoe up to a substantially straight shape, it is possible to easily move to the next "third state" without any resistance.

FIG. 2B shows the "third state" in which the weight is supported by a substantially straight line portion between the lower surface 7 of the sole of the metatarsal head and the lower fulcrum 5. In this "third state", you approach the state of wearing normal high heel shoes,
The Achilles tendon as described in [Problems to be Solved by the Invention] is released from the pulled state. Since it is possible to easily shift to the “third state” in this way, the unreasonable stretching of the Achilles tendon at the time of getting out of bed as shown in FIG. There is no adverse effect that the Achilles tendon is stretched. not only that,
Due to this effect, in the present invention, it is possible to freely design the ideal lifting angle in the first state to be an appropriate value without concern about the adverse effect caused by the excessive pulling of the Achilles tendon. This gives the ideal therapeutic effect. Further, in this "third state", the heel is in a raised state, which facilitates the transition to the next bed leaving stage "fourth state". In this way, the state where the heel is raised to facilitate the transition to the next "fourth state" is referred to as "high heel type bed preparation state".
Say.

Further, the O-leg can be corrected by advancing the little finger side of the ridgeline formed by the lower fulcrum 5.

FIG. 2 (c) shows the "fourth state" in which kicking is performed, but by providing a void 3F at a predetermined position from the metatarsal head of the shoe sole to the front, kicking is performed. The soles of the shoes tend to bend when kicking out, which makes kicking out easier.

Further, although it is not directly related to the disease of the degenerative knee joint which is the object of the present invention, it has a secondary advantage.
In addition to improving the posture by the "knee extension effect" of the present invention, the O-leg (or X-axis) can be obtained by advancing the little finger side of the ridgeline formed by the lower fulcrum 5 or by providing an inclined surface on the upper surface of the shoe sole described later. Improve your posture by correcting your legs. Further, since some energy is consumed to extend the knee, a slight diet effect can be expected as in the shoe of Conventional Example 2. In all of these cases, unlike the above-mentioned conventional examples 1 and 2, the above-described drawbacks that cannot be avoided in the conventional examples are solved by the present invention, and there is an advantage that only advantages are obtained.

Example 2. In the first embodiment, an example in which the inner member 9 is formed of an elastically deformable elastic material is shown. However, in order to obtain the balance mechanism, as shown in FIGS. 8 (a) and 8 (b) as another embodiment, The inner member 10 is made of a material that does not elastically deform,
The inner member 10 may serve as the horizontal member 6 (FIG. 1) described above. In FIG. 8 (a), the balance member 1 includes a column member 11 (column member 3a in FIG. 1) that does not substantially elastically deform, and an inner member 10 that does not substantially elastically deform.
Forming 2. The internal member 10 is used as a shock absorbing mechanism.
As in the case of FIG. 1, the rear end is separated from the sole to form the space 10a, and the heel region is elastically deformed.
In this embodiment, instead of providing a decorative heel shape forming member described later, the rear end e of the substantial heel is notched obliquely upward so as not to disturb the rear, and this portion is formed on the sloped surface d2.

In the case of this embodiment, the horizontal member 6 shown in FIG.
8 corresponds to the internal member 10 of FIG. 8, and the support member 3a shown in FIG. 1 corresponds to the support member 11, so that FIG. 1 and FIG. 8A have the same balance function. Figure 8 (b) when the load is applied
As shown in FIG. 5, the inner member 10 is depressed by denting the sole 3d, and the rear portion 10b of the inner member 10 is lowered to reduce the space 10a, and the shock is absorbed by both of these actions. . In this embodiment, since the inner member 10 does not elastically deform, it has a drawback that it does not fit to the foot, but in order to solve this, an elastic material not shown is only the surface in contact with the foot, taking care not to impair the balance function. You may form with.

As described above, since the balance mechanism is obtained by the inner member 10 and the strut member 11 which are not substantially elastically deformed, the inner member also serves as the horizontal member 6 and the inner member 9 shown in the first embodiment. It can be set to 10, and the same effect as that of the first embodiment can be obtained.

Example 3. In the shoe for a patient with osteoarthritis of Example 1 described above, in addition to the effect of the above Example, an embodiment having an inclined surface inside the sole of the shoe so that varus knee (valgus knee) can be further corrected Example 3 will be described.

FIG. 9 is a plan view of the internal member 9 shown in FIG. 1, and FIGS. 10 (a), 10 (b) and 10 (c) are sectional views taken along lines aa and bb of the internal member shown in FIG. , C-c section is shown.
As shown in FIG. 10, the surface of the internal member 9 is inclined so as to be lowered from left to right when viewed from the rear, and an inclined surface is formed so that the affected side direction of the joint of the patient is low.

Further, in order to prevent the human foot from sliding sideways toward the lower side of the inclined surface and pushing and bending the upper, the lower side of the upper is compared with the upper side of the upper with a reinforcing material (not shown). Strengthened.

The reason why the inclined surface is formed is well known, and the explanation will be simplified. However, as an example of osteoarthritis of the knee, a varus knee (O-leg, crab crotch) will be described as an example. As shown in, the axial direction (alignment) a-a is bent,
111 inside the joint rather than the cartilage 105 on the outside 112 of the joint
Received a lot of load, the cartilage was worn and lost, and the affected part 106
And the bones are exposed. As a means for correcting it, a slope is provided in the shoe, and the one side is low so that the inside of the joint is lowered as shown by the downward arrow E to generate the force of the arrow F, as shown in FIG. 12
Try to correct the axial direction and release the affected area from the load as shown in. Although the effect can be recognized even by this method, it cannot be corrected as desired, and the effect is not satisfied by this means alone. The problem is solved in the third embodiment,
And Example 4 below.

In the above description, the example of the valgus knee is explained. However, in the case of the valgus knee, the outside is read as the inside and the inside is read as the outside in the above description, and the inclined surface is also inclined in the opposite direction. Is omitted.

Although the inclined surface is formed by the internal member 9 in this embodiment, the inclined surface may be formed by the internal member 10 or the upper surface of the shoe sole may be inclined.

When the inner member 9 shown in FIGS. 9 and 10 is made of an elastic material, for example, the E. V. A. It is formed using a foamed resin. In this case, the elasticity of the inner member 9 acts in cooperation with the above-mentioned heel portion supporting elastic member 4a, so that the action is under the same superordinate concept.
However, there are functional differences between the two.

The elasticity of the heel portion supporting elastic member 4a is, for example, 7
Strong elasticity to withstand a load of 0 kg is required. This requirement is strong elasticity, for example, to absorb the impact of rails and wheels in railways. Therefore, walking above 70k
Sufficient elastic deformation only when g weight is applied. However, it is desirable that the inner member 9 be deformed by a weaker force (for example, 1 kg) like a vehicle seat. The reason is that since the weight of 70 kg has not yet been loaded at the moment when landing is started, the heel portion supporting elastic member 4a having strong elasticity is not deformed, and the inner member 9 that is deformed by a weak force is momentarily landed. Absorbs the initial shock of. The initial impact at the moment of landing is the most painful point for patients with knee pain. Even if the weight of 70 kg is applied as a static load after the moment of landing, the effect on pain is small.

However, in addition to the function of absorbing the initial impact, the internal member 9 is required to have the function of maintaining the above-mentioned slope shape, and this slope surface must not be deformed by losing the weight.

Therefore, for example, it is required to have both the softness that elastically deforms even with a light initial impact of 1 kg and the strong shape holding function capable of withstanding a heavy static load of 70 kg and holding the shape. .

The internal member 9 of the third embodiment shown in FIG. 9 has an inclined surface as shown in FIGS. 10 (a), 10 (b) and 10 (c). In this case, the area of the inner member 9 in contact with the human foot is significantly larger than that of the heel-supporting elastic member 4a, and the load per unit area is small. It can be formed of a softer material.

In order to have both of the above functions, FIG.
It is also possible to use a modified example in which the portion indicated by the area Q in FIG. This area Q is an area that receives a strong pressure from the calcaneus and is a portion that receives the load immediately at the initial stage of landing, and a small initial impact can be absorbed by this specially provided area Q. Compared to other regions, this region is made soft so as to be easily elastically deformed by a large number of bubbles (not shown in FIG. 9) even with a load of 1 kg. Alternatively, the region Q may be made softer by providing a recess or the like, or the region Q may be formed using a material that is softer than other parts of the inner member 9.

With this structure, it is possible to maintain the shape retaining function of forming the inclined surface, at the same time, absorb a weak initial impact on the landing, and prevent the most feared pain at the moment of landing of the patient.

By providing a slip stopper on the lower side of the inclined surface, it is possible to prevent the foot from slipping sideways and pushing and bending the upper.

Example 4. In an experiment using the shoe of the above-mentioned Example 3, I encountered a scene where the effect of the inclined surface was not obtained unexpectedly, but the cause is unknown. While investigating why the expected effect could not be obtained, it was discovered that the cause was as follows. That is, since the heel-portion supporting elastic member 4a is formed of an extremely flexible material, the heel-portion supporting elastic member 4a supporting the high side of the inclined surface is
It received a larger load than the heel-supporting elastic member 4a that supports the lower side of the inclined surface, was compressed a lot, and descended. As described above, when the high side of the inclined surface descends more than the low side, the force of the arrow W opposite to the arrow E shown in FIG. 12 is generated, and the axis a- in the bad direction shown in FIG. 11 is generated. A force that bends a is generated. This phenomenon cannot be noticed unless observed carefully, but this is a fatal phenomenon in the case where the heel portion supporting elastic member 4a is made of a particularly soft material. Such a phenomenon in which the heel-supporting elastic member 4a does not descend evenly left and right and a large amount of the heel-supporting elastic member on the higher side of the inclined surface descends is hereinafter referred to as "heel uneven descent phenomenon".

In this embodiment, the above problem is solved as follows. FIG. 13 is a horizontal cross-sectional view in the vicinity of the lowermost surface of the shoe sole obtained by cutting the lower surface of the shoe sole of the present embodiment along the bottom surface cover material 3c at a height of 1 mm above the bottom surface of the shoe sole. In the figure, the heel portion supporting elastic member 4a has a small cross-sectional area on the affected side 4l and a large cross-sectional area on the opposite side 4r. In other words, the cavities 4L on the affected side are larger than the cavities 4R on the opposite side. I am doing it.
Therefore, the affected area is compressed even with a weak pressure. In other words, by adjusting the cross-sectional area and providing a difference between the cross-sectional area of 4l and the cross-sectional area of 4r, it is corrected that the force in the bad direction described in the preceding section acts to bend the axis aa. This is an example of providing a difference in the size of the voids, but instead of the size of the voids, a difference in the size or number of recesses, bubbles, etc. (not shown) is provided to facilitate the descent on the affected area side. May be. Also,
As shown in FIG. 14, the heel portion supporting elastic member 4a may be formed of a material S that is elastically deformed (soft) on the affected part side with a weak force, and may be formed of a material H that is hard to elastically deform (hard) on the opposite side. . An intermediate material band (not shown) may be provided between the material S and the material H. Also, these means may be used in combination.

By thus constructing the heel portion supporting elastic member 4a and forming the heel region, the "soft heel portion supporting elastic member" which is the basic constitution of the present invention is used to support the weight and "natural impact". While compensating for the loss of "absorption function", the "unequal descent of the heel" that would inevitably occur by providing the left and right inclined surfaces in that case is prevented, and the inclination angle of the left and right inclined surfaces is accurately adjusted. Can be held at.

Example 5. In the first to fourth embodiments, the position of the rear end e of the heel portion supporting elastic member 4a, which is a portion that substantially supports the weight, is 10% of the total length of the shoe in the present embodiment. Provided. Further, a decorative heel-shape forming member is provided in the cutout portion on the rear side of the heel portion supporting elastic member 4a.

In the unloaded state shown in FIG. 3 (a), the heel portion supporting elastic member 4a for supporting the weight at the heel portion at the start of landing is a pre-calculated elastic material and is formed into a calculated shape. When the landing is started and the weight is supported, the compression deformation is performed as shown in FIG. 1. However, in the present embodiment, as shown in FIG. 15, the heel supporting elastic member 4a is provided behind the heel supporting elastic member 4a. Has a decorative heel shape forming member 4b,
The decorative heel shape forming member 4b is formed so as to be deformed more easily than the heel portion supporting elastic member 4a so as not to participate in carrying the weight as much as possible, and therefore, the "knee bending of the heel" described in the conventional example does not occur. It will be reduced. As a result, FIG.
Prevent the “knee flexion of the heel” shown in (b).

In this embodiment, the decorative heel shape forming member 4b is easily deformed by enlarging the space 4C. However, instead of this space 4C, the same material as the heel portion supporting elastic member 4a is used. The same effect can be obtained by forming a large number of recesses or bubbles (not shown), and it may be formed of a softer material than the heel portion supporting elastic member 4a. Figure 3 (a)
From the position indicated by the symbol e to the rear, ascending slope d
It is preferable that it is formed so that it is slightly elevated so as to be separated from the ground as 1. Alternatively, as shown in FIGS. 8 (a) and 8 (b), the rear part e may be cut away from the rear end e of the heel portion supporting elastic member 4a to form the inclined part d2.

FIG. 16 is a view for explaining the operation of the decorative heel shape forming member 4b shown in FIG. 15, and for the sake of explanation, the void 4C (FIG. 15) of the decorative heel shape forming member 4b is shown. In No. 16, it was assumed that the material was filled with 4 h.
If there is no void 4C when going down a slope under the same conditions as in FIG. 15 or when landing with the toes raised, the reaction force of the arrow A from the harmful ground described in the conventional example occurs at the 4h portion, and the knee joint Give a shock to the affected area.

A large space 4 is larger in FIG. 15 than in FIG.
C deforms easily and the reaction force received from the ground is small. Such an effect is effective not only when descending a slope but also when a patient's walking habit lands on a toe. If the appearance is not a concern for an ideal function, the decorative heel shape forming members 4b and 4h should be omitted. As a modified example, as shown in FIG. 16 described above, even when the void of the decorative heel shape forming member is filled with an elastic material as shown by 4h, the notch of the heel is steeper as shown by a chain line d-d. If it is formed as described above, the design is bad such that the rear part of the heel is substantially lacked from the rear end e, but an effect similar to the "support effect close to the vertical line" can be obtained.

However, there are large individual differences in the patient's medical condition, and there are also cases where comorbidities occur together. As described with reference to FIG. 16, there is a case where an elder patient who lacks the ability to stand up and is unable to stand up satisfactorily has a structure in which the heel rear portion 4h is filled to compensate for the insufficient ability to stand up. Even in the case of such a structure as shown in FIG. 16, since the heel portion supporting elastic member 4a is formed of a sufficiently soft elastic material in the present invention, the substantial supporting point is located in a forward position, whereby Although not so clear as the above-mentioned "supporting effect close to the vertical line", a similar effect can be obtained.

In each of the above-mentioned embodiments and modified examples, the lower surface rear end e of the heel portion supporting elastic member 4a which substantially supports the weight.
Is located at a position advanced from the rear end of the shoe body. This position is at least 5% of the total length of the shoe, preferably 6% to 7% or more, measured from the rear end of the shoe. In this embodiment, the rear end e of the heel portion supporting elastic member 4a is set at a position 10% advanced from the rear end of the shoe body. in this way,
Setting the rear end e of the heel portion supporting elastic member 4a to be advanced is effective in further enhancing the "non-flexion effect of the knee joint". That is, as a result of the rear end e being provided forward, it is possible to position the lower end of the calcaneus closer to the vertical line than the hypotenuse R4 (FIGS. 1 and 23).

Further, the heel rear end E shown in FIG. 17 as a prior application is formed of a hard material into angular corners, and at the moment of landing, only the rear end E carries a concentrated weight. On the other hand, in the embodiment shown in FIG. 1, since the heel portion supporting elastic member 4a itself is made of a soft material, even if the rear end e shown in FIG. Is a flexible deformer, rather a substantial heel 4
Since the weight is carried by the whole a, it is considered that there is a substantial supporting point in front of the angular rear end e shown in the figure. It may be considered that the supporting point exists near the center of gravity V of the heel portion supporting elastic member 4a as shown in FIG. Assuming the hypotenuse 5 that passes through the center of gravity V, the hypotenuse R5 passes the hypotenuse R4, as shown by the dotted lines in FIGS.
Get closer to the vertical line. Although the estimation of the angle of the hypotenuse R5 is not definite, at least the hypotenuse R1 shown in FIG.
Approaching the vertical line χ-χ through R2, R3 or R4 can be expected to be certain. The effect produced by the weight supporting state in which the hypotenuse approaches the vertical line χ-χ like R5 is referred to as "supporting effect close to the vertical line".

As described above, when the rear end of the heel-carrying elastic member 4a, which is substantially the heel, is located at a position advanced from the rear end of the shoe body, the hypotenuse R5 is more vertical as described above. As the weight approaches χ, the weight is supported at a position advanced from the rear end of the shoe main body, and the harmful force of arrow A (FIG. 20) is prevented by the above-mentioned "supporting effect close to the vertical line", and It is possible to more sufficiently prevent the "knee bending effect of the heel".

If the bottom cover material 3c is omitted, the vacant space formed by the structure of the above-mentioned first to fifth embodiments,
Since the recess is exposed and unsightly, by filling it with an elastic material having an elastic force lower than that of other portions, it is possible to adjust the appearance and prevent a strange appearance.

Example 6. 24, 25 (a) (b) (c)
FIG. 6 is a diagram showing a state of a state when walking while wearing slipper-like footwear for a patient with knee joint disease according to Example 6 of the present invention, which will be described later in order from landing to kicking.
FIG. 4 is a cross-sectional view showing "from the state" to "the fourth state".

26 (a) and 26 (b) show the footwear of Example 6 of the present invention when there is no load, and FIG. 26 (c) is a bottom view of the sole material. FIG. 26 (a) is a vertical cross-sectional view taken along the chain line vv of FIG. 26 (c), and FIG. 26 (b) is a side view showing the outer appearance of the footwear of the sixth embodiment.

In FIG. 24, reference numeral 1100 is a slipper-shaped footwear main body, and 1101 is generally slippers or "slippers".
As shown in FIG. 2, an instep cover without a rear part, 1102 is a bottom material, and 1003 is a front elastic member of the bottom material. In general, such a slipper-shaped footwear is not provided with a heel like a shoe in many cases, but for convenience of description, the rear from a lower fulcrum described later is referred to as a heel region 1004. 1005 is a “second
1003a, a lower fulcrum that serves as a fulcrum for supporting the load in a balance-like manner in the "state of", 1006a is a horizontal member that serves as a balance for supporting the load applied to the metatarsal head and the heel of the upper surface of the bottom material in a balance-like manner. Is a pillar member formed by connecting the lower fulcrum 1005 and the horizontal member 1006 and less likely to be elastically deformed than the heel region, 1007 is a bottom material lower surface located below the metatarsal head, and 1008 is the horizontal member 100.
6 and a balance member 1003a, a balance member, 100
3 m is an insole, and 1009 is an upper layer member. The balance member 1008, the heel portion supporting elastic member 1004 a, the insole 1003.
m, upper layer member 1009 and bottom member front elastic member 1003
Are collectively referred to as a footstep 1003g. 20 is the heel of the human, 30 is the head of the second metatarsal of the human, 40 is the second metatarsal of the human, 50 is the center of the ankle of the human, 1003c is the bottom cover material, and 1004a is the substantial heel. The heel-supporting elastic member 1009a is the upper surface of the upper layer member 1009 at the position where the human heel contacts, and e is the heel-supporting elastic member 100.
4a shows the rear end of the lower surface.

Although the bottom surface is covered with the bottom cover material 1003c and the internal structure as shown in the sectional view cannot be seen from the bottom surface, for convenience of explanation, the lower fulcrum 1005 described later and the lower surface of the heel portion supporting elastic member 1004a described later are provided. The description of the end e will be made by ignoring the existence of the bottom cover material 1003c. As another modification, the bottom cover material 1003c may be omitted and the lower fulcrum 1005 may be in direct contact with the ground, and the presence or absence of the bottom cover material 1003c does not relate to the essential function. Here, the bottom cover material is the bottom material front elastic member 1003,
Alternatively, it may be integrally formed with a heel portion supporting elastic member 1004a described later. If the bottom cover member 1003c is omitted, the internal structure is exposed, so that the balance member 1008 formed between the bottom member upper surface and the ground contact surface and the heel portion supporting elastic member are formed as will be described later in Example 10. Member 1004
a, the space of each member of the decorative heel shape forming member 1004b described below and the space between the members may be filled with an elastic material having an elastic force weaker than that of each member to adjust the outer shape. Further, the upper layer member 1009, the balance member 1008,
Bottom material front elastic member 1003, heel part supporting elastic member 1004
It is preferable that at least two of a and the like are covered with a covering material to make the appearance look united.

FIG. 24 is a sectional view showing a landing start state in which a load is applied to the heel portion. The upper layer member 1009 is formed so as to be lowered by at least 2% or more, or 5% in this embodiment, with respect to the entire length of the footwear when a load of 70 kg is applied to the lower end of the human heel. In addition, with respect to an extension line (horizontal line) of the line connecting the lower surface rear end of the heel area and the heel area lower surface front end 1005, the heel area lower surface front end 10
05 and the bottom material lower surface 100 located below the metatarsal head 30
The line connecting 7 and 7 rises above the horizon at an angle of 12 degrees. This is due to the difference in thickness from the bottom material upper surface to the ground in the heel region 1004. That is, this is because the rear portion of the heel region is formed to be thinner than the thickness near the front end of the heel region lower surface (lower fulcrum 1005). The state as shown in FIG. 24 in which the metatarsal head is lifted by the load being applied to the heel portion as described above is referred to as a "first state".

As shown in FIG. 24, the angle at which the second metatarsal head floats up with respect to the horizontal line at the time of load is at least 5 degrees, preferably 6 degrees, 7 degrees with the heel part being loaded.
Set more than once. However, it is preferably larger. In this embodiment, the lifting angle is set to 12 degrees. According to the experiment, even if it is set to 8 degrees, 10 degrees, 15 degrees, 20 degrees, etc., it is functionally good except that the design becomes worse in proportion to the increase of the angle.

In the present embodiment, the line (oblique side) R4 connecting the ankle and the calcaneus lower end d shown in FIGS. 24 and 23 is changed to χ-χ by increasing the lifting angle of the second metatarsal head. Approaching, the above-mentioned “supporting effect close to the vertical line”
As a result, a "non-flexion effect of the knee joint" is obtained, and a "knee extension effect" described later is also generated to prevent abrasion of the knee joint, and an effect described in [Effect 1] described below is produced.

In the experiment of this embodiment, the lifting angle is set to 12 degrees. If the angle is too small, the effect will be poor, and if the angle is too large, the effect will be great, but the design will be poor. Based on the results of trials with 20 patients at the time of filing this application, the gait habits of patients are mixed and the medical conditions are light and severe, so it depends on what patients and what medical conditions are targeted. , Each angle shall be selected.

Further, in the embodiment of the present invention, the "lower knee flexion effect" is sought, and the lower calcaneus is brought close to the vertical line χ-χ so that the toes are lifted from the ground. In order to lose the "natural shock absorption function" by losing the spring of the arrow A or the arrow B described in the "Prior Art" section,
In order to compensate for this, the heel region 4 is designed so that the height of the surface of the heel portion in contact with the lower end of the heel of the human is lowered by the above load, and absorbs the impact at the start of landing. The shock absorption mechanism is special and requires a completely different function from the shock absorption of sports shoes. That is, the patient has a knee ailment and withstands pain, so walks quietly and lands with a load that is closer to a static load than a sports person. It is preferable to actively protect such a weak patient and provide a sufficient shock absorbing mechanism so that a patient suffering from pain and suffering one by one can land more gently than a healthy person. On the other hand, sports shoes or the like are subjected to an acceleration load to which speed is applied, and a strong load, such as four times the weight, is received when jumping or the like. Since the shock absorbing mechanism of the sports shoe is designed to have a structure that elastically deforms by such a strong force, it does not elastically deform sufficiently when the patient quietly lands.

A structure capable of being elastically deformed even in such a quiet landing will be described below. That is, the heel portion supporting elastic member 1004a is formed of a material that is easily elastically deformed, and is deformed from the state of FIG. 26 (a) to the state of FIG. 24 by a load. As a material that is easily elastically deformed, an E.I. V. A. A soft foam material called (ethylene vinyl acrylic) resin was used. To test how soft it is, take 10mm × 10mm × 10mm of this material, insert it between your fingers and push it.
I was able to compress it. This is an exceptional softness as a footwear material.

Comparing the elasticity of this material with the elasticity of the heel region of a sports shoe, the heel of a sports shoe that can withstand 4 times its weight is in principle never easily elastically deformed under such a weak static load. is there. According to the present invention, the heel-supporting elastic member 1004a, which has an important role in absorbing impact at the initial stage of landing, starts contacting with the ground at the moment of contact with the ground, where the weight is not yet applied, and the weight is fully loaded. By the time it is about to move, the weight support moves to the lower fulcrum 1005 (in other words, the balance member 1008), and the heel part supporting elastic member 1004
Since the load of a is reduced, the heel portion supporting elastic member 1004
Contrary to common sense of shoes, a can be formed of an abnormally soft material as described above.

Further, the upper layer member 10 provided inside the footwear body
When 09 is also made of an elastic material, the surface 1009a that receives the heel of the human is also slightly recessed to help absorb shock. Since the upper layer member 1009 is not as thick as the heel portion supporting elastic member 1004a, the shock absorbing function is not so large as that of the heel portion supporting elastic member, but as shown in FIG. , Effective for shock absorption. Thus, the examples shown in FIGS. 24 to 25 show an example in which the upper layer member 1009 is made of an elastic material, and the descent of a human foot is caused by the inner surface 1009a of the upper layer member 1009 located at the lower end of the heel. Measure with a descent. In each of the embodiments described below, the elastic material for absorbing shock may be partially replaced with the shock absorbing material if necessary.

Heel portion 1009a on the surface of the upper layer member 1009
Since it is desirable that the shock absorbing mechanism can compensate for the loss of the above-mentioned "natural shock absorbing function of humankind", the material of the heel part supporting member 1004a should be one that can be sufficiently elastically deformed, for example, the upper layer member 1009. Surface 1 of the calcaneus
When the static load received by 009a is 70 kg, the total length of the footwear is set to 250 mm, and the descending dimension is 12.5 in this embodiment.
It is set to mm, which is 5% of the total footwear length. Attempts were made to make the descent dimension 2%, 3%, 4%, 5% of the total footwear length.
Since the larger the descending dimension, the better the shock absorbing function, the upper limit is not limited to about 10%, but at least 2% or more, preferably 3% or more, preferably 4% or more, 5% of this example is almost satisfactory. Patients say that they can get good shock absorption.

Based on the results of trials with 20 patients at the time of filing of this application, the gait habits of the patients are variable and the medical conditions are light and severe. Each drop size shall be selected depending on whether

The fact that the upper layer member 1009 is made of an elastic material as described above greatly contributes to shock absorption. Therefore, as an example, naturally, the upper layer member 1009 is made of an elastic material, and the value of the drop is also shown by the value of the surface drop of the upper layer member 1009a of the heel. However, the upper layer member 1009 is a replaceable insert having a special shape for a special purpose,
In the distribution stage, the upper layer member 1009 may be handled separately and may be sold separately. In such a case where the upper layer member is lacking in circulation, the descent function cannot be indicated by the descent value of the surface of the upper layer member of the calcaneus portion, and therefore, it may be measured at the rear end of the bottom material upper surface instead. In that case, since the amount of compressive deformation of the upper layer member 1009 itself is lacking, the numerical value becomes smaller accordingly. The larger the number, the better the shock absorption function,
At least 0.5% of the total shoe length, preferably 1.0%
As described above, in this embodiment, it is set to 2.5%. However,
This value is the value without the upper layer member.

Further, in order that the heel portion supporting elastic member 1004a is more easily deformed than the balance member 1008, a difference is provided in the ease of elastic deformation between the heel portion supporting elastic member 4a and the balance member 1008. It is to be formed by at least one of a difference in size or number of shapes of bubbles, perforations, cavities, and recesses, and difference in cross-sectional area or difference in material.

The bottom material lower surface between the rear end of the heel area lower surface and the lower fulcrum is hereinafter referred to as the heel area lower surface, and this portion may be substantially linear or upwardly recessed when viewed from the side when loaded. Is preferred. For example, as shown in FIG. 27, the heel region of this modification is an example in which the heel region is slightly recessed upward. When it is unavoidable that the heel region is formed to have a loose downward projection, the heel region is not shown here, and is likely to be substantially straight when viewed from the side. Providing at least one of the recess and the flexible material to facilitate the recess results in a straight line. Thus, this portion is formed substantially linearly as shown in FIG. 26 (a), or is formed so as to be recessed upward as shown in FIG. 27, or is formed so as to be easily recessed upward. Therefore, at the start of landing, FIG.
As shown in, the rear end of the lower surface of the heel region and the lower fulcrum 10
Both 05 are in contact with the horizon and are stable in the front-rear direction, and never shake. This is a big difference from the rocker shoes described above as Conventional Example 3.

FIG. 25 (a) shows the "second state" in which the weight gradually moves from the landing start state "first state" of FIG. 24, and the weight is lower fulcrum 100 at the front end of the lower surface of the heel area.
5 shows a state of being supported by the human body 5, and the weight mainly rests on the human heel 20 and the metatarsal head 30, which is the horizontal member 10.
Balance member 1008 composed of 06 and a pillar member 1003a
Is supported in a balance-like manner by and is concentrated on the lower fulcrum 1005.

Unlike ordinary footwear, for example, a patient weighing 70 kg can support a total weight of 70 kg like a balance, and the horizontal member 1006 connects the heel 20 and the metatarsal head 30 so as to endure it. It is provided in. Since the function of the horizontal member 1006 is also enhanced by the support member 1003a described in the next section, it is considered that the function of the horizontal member 1006 is integrated with the support member 1003a described later, and supports the load in a T-shape or an inverted triangle shape. . The T-shape and the inverted triangle here are not necessarily symmetrical with respect to the lower fulcrum, and the lower fulcrum is often biased forward. This horizontal member 1
006 and the pillar member 1003a are collectively referred to as a balance member 1008 below.

The strength of the balance member 1008 is such that, when a load of 15 kg is supported at the position of the second metatarsal head 30 at the balance end, the bottom material lower surface 1007 at the position of the metatarsal head 30 sags 5 mm. It has a supporting force to support so as not to exceed. It is preferable that it can be less than 4 mm. In this embodiment, the sagging under load is suppressed to 3 mm.
Although the horizontal member 1006 and the support member 1003a are mentioned as the members that contribute to the strength of the balance member 1008,
In addition, if the insole 1003m is made of a hard material up to near the metatarsal head, it helps to increase the carrying force of the balance member 1008.

Further, in this embodiment, the lower fulcrum 100
The position of 5 is set to a distance of 50% from the rear end of the footwear body along the line passing through the second metatarsal head 30 with respect to the entire length of the footwear body. The ridgeline formed by the lower fulcrum 1005 on the bottom surface of the bottom member is formed by advancing the little finger side more than the thumb side, as shown by the solid line 5-5 in FIG.

As described above, in this embodiment, the horizontal member 100
6 to support the lower fulcrum 1005 and the horizontal member 100.
6 is tied with a strut member 1003a.
Although the balance member 1008 is formed of the horizontal member 1006 and the horizontal member 1006, the pillar member 1003a and the horizontal member 1006 are not formed separately but are integrally formed of the same material for the purpose of reducing the manufacturing cost. You can also

If the hanging down of the balance member 1008 is large, the balance function is lost. The size from the lower fulcrum 1005 of the balance member 1008 to the upper part of the balance may be increased (the height of the balance fulcrum may be increased) to compensate for the loss due to sagging. However, if the height of the column member 1003a is high, it is designed. It becomes unsightly. If you put up with it, 5m above
The pillar member may be raised by hanging it over m.
This sagging value is a value when a load is applied only to the position of the metatarsal head 30 for measurement, and in reality, such a one-point intensive load is not applied, and the entire sole Actually, it does not droop so much because it supports the weight. In this embodiment, the sag when the above-mentioned one-point concentrated load is applied is suppressed to 3 mm, but it is preferable that the sag is even smaller if possible. The above drooping dimension is based on the results of trials with 20 patients at the time of filing of this application, but the required drooping dimension is taken into consideration considering that the walking habits of patients are mixed and the medical condition is light and heavy. I shall.

The balance member 1008 is the heel portion supporting elastic member 10
It is preferable to use a material that does not elastically deform as compared with 04a.

A modified example in which the structure is simplified is shown for the purpose of reducing the manufacturing cost. In this modified example, the bottom member front elastic member 1003, the strut member 1003a, and the heel portion supporting elastic member 1004a are made of the same material, and are shown in FIGS. 28 (a) and 28 (b).

In FIG. 28, the pillar member 1003a is formed.
The pillar member portion 1003b, which is a portion corresponding to the above, is integrally formed of the same material as the heel portion supporting elastic member 1004a. However, as shown in FIGS. 28 (a) and 28 (b), there is a difference in elastic force due to a difference in cross-sectional area between the column member portion 1003b and the heel portion supporting elastic member 1004a. In other words,
The column member portion 1003b is formed without providing a void, while the heel portion supporting elastic member 1004a is provided with a void 1004.
The cross-sectional area is reduced by C and 1004M. Therefore, the pillar member 1003b is attached to the heel portion supporting elastic member 1004.
Does not deform elastically compared to a. However, the function of the pillar member 1003a shown in FIG.
In addition to the function of acting as a pillar without being deformed compared to a,
Since it also has a function of reinforcing the strength of the balance member 1008, when the pillar member portion 1003b is made of the same material as the heel portion supporting elastic member 1004a as shown in FIG. 28, the horizontal member 1006 has sufficient strength. It is preferable to use those of In order to reduce the manufacturing cost, the horizontal member 10
06 is omitted, and instead, insole 1003 with sufficient strength
m may be a horizontal member. In the modified example of FIG. 28, the portion of the lower fulcrum 1005 easily receives a load and is dented,
The position of the lower fulcrum 1005 tends to be indefinite. Lower fulcrum 1
When the position of 005 becomes indefinite, the fulcrum moves as the leg advances, and the lower fulcrum 5 moves forward to make walking difficult (the adverse effect of the movement of the fulcrum will be described later). Therefore,
It is not very preferable to form the pillar member portion 1003b with a soft material. However, in order to avoid the movement of the fulcrum, the column member 1003b and the heel portion supporting elastic member 1004a
When and are formed of a common slightly hard material, the heel portion supporting elastic member 1004a does not sufficiently elastically deform. In order to prevent such an adverse effect, in this modification, the heel portion supporting elastic member 10 is used.
The cross-sectional area of 04a is made small (a space is provided) to facilitate elastic deformation.

Further, the position of the lower fulcrum 1005 is 5 with respect to the entire length of the footwear body as measured from the rear end of the shoe body in the figure.
The position is 0%. In reality, 40% is sufficient if the doctor can explain the function to the patient and the patient can understand it well and can walk properly from the heel to the ground.
However, there are some patients who do not understand the doctor's explanation and erroneously perform “walking on the toes” as shown in FIG. 19 (conventional example). It was most often found in young, muscular patients. To eliminate the existence of such misused patients,
The lower fulcrum 1005 was set by advancing extra. The position of the lower fulcrum 1005 is set to 41%, 43%, 45%, 4
7% was tried, but the presence of misuse patients decreased as the value increased. In the experiment, the position was set to 50%, so there were no misused patients with a few exceptions. Therefore, the position of the lower fulcrum 1005 is set to 55%, 58%, 6
I tried 1% and 63%. As a result, as the number increases, the number of abusers decreases, and the knee stretching effect increases, but the patient complains that he / she is forced to stretch his knees and is prone to fatigue during long-distance walking. Even if the patients put up with it, more than 65% said that elderly patients were too tired to walk. Depending on what kind of patients and what kind of medical conditions are targeted,
The position of the lower fulcrum 1005 is determined.

FIG. 26 (c) is a bottom view of the footwear of this embodiment. In the structure of general footwear, the floor separation point at which the front part of the sole is curved upward and away from the ground is that the floor separation point on the little finger side is shorter than that on the thumb side (the shortest on the little finger side, measured from the rear end of the heel). So it's short and backwards. However, in the embodiment of the present invention, the lower fulcrum 10
As shown by the solid line 5-5 in FIG. 26 (c), the lower fulcrum 5 forms a ridge line 5-5 that crosses the bottom surface of the bottom member, and this ridge line is on the little finger side measured from the heel rear end. Is longer than the ridgeline on the thumb side and is positioned forward. This is the opposite of the general footwear described above. The theory that led to such setting was discovered in the course of the trial manufacture experiment of the present invention. The theory is to reduce the push-up action from the ground that the affected side of the knee joint receives, as described later in the eighth embodiment. That is, when the legs gradually advance and the balance member 1008 leans forward, the weight is largely supported by the little finger side where the ridge line travels forward, and is slightly supported by the thumb side where the ridge line recedes. Therefore, there is an effect of reducing the load on the affected side of the O-leg patient. However, this theory applies to the O-leg that is common in Japanese, and does not apply to patients without the O-leg.

FIG. 25 (b) shows the "third state", in which the weight of the human gradually shifts from the "second state" supported by the balance as shown in FIG. Is supported by a substantially straight line portion between the bottom material lower surface 1007 of the second metatarsal head 30 and the lower fulcrum 1005.

The lower fulcrum 1005 is in the approximate center of the entire footwear and the feet are supported in a balance-like manner, so that the "second state" is obtained.
The movement from "3rd state" to "3rd state" is merely an operation of tilting the balance, and there is little resistance.

As shown in FIG. 25 (b), the reason why the resistance to the movement from the "second state" to the "third state" is small is as shown in FIG. 25 (b).
05 is connected in a substantially straight line when viewed from the side,
This is because there is no resistance in shifting from the state of FIG. 25 (a) to the state of FIG. 25 (b). If the lower foot 1007 of the metatarsal head and the lower fulcrum 1005 are formed into a curve that projects loosely when viewed from the side, as shown in FIGS. 29 (b)
Like, the front of the lower fulcrum 1005 functions like a loose roller, and the ground contact point rolls like a roller 10 in front.
It moves to 05f and moves further forward if it rolls. Moving the ground contact point like 1005f causes the same result as the lower fulcrum 5 moves and makes walking difficult. Become. Originally the above lower fulcrum 100
Position 5 is set to the best position that the doctor thinks to be the most appropriate, referring to the request from the patient and the medical condition of the patient in the range of 41% to 65% as described above, and this best position is It is preferable not to move. for that purpose,
It is preferable that the space between the bottom material lower surface 1007 where the second metatarsal head 30 is located and the lower fulcrum 1005 be substantially linear or upwardly recessed when viewed from the side when loaded. As shown in FIG.
Shown in In addition, as will be described later, when it is unavoidably necessary to form a loose downward protrusion for the convenience of design, the bottom material lower surface 1007 of the metatarsal bone head and It is preferable that at least one of a bubble, a perforation, a void, a recess, or a soft material is provided between the lower fulcrum 1005 to facilitate the depression.
By doing so, since the column member 1003a is not deformed, the front portion that is more likely to be recessed than that is compressed by the load and deformed linearly, and the movement of the lower fulcrum can also be prevented. By linearizing the load in this manner, the space between the bottom member lower surface 1007 and the lower fulcrum 1005 is substantially as shown in FIG.
In the case of the state of (b), the case of forming the shape of FIG. 25 (b) from the beginning, and the case of forming the shape recessed upward as shown in FIG. State 1 "
It has been confirmed by an experiment with a sick person that the shift from the “to” to the “third state” via the “second state” is an easy operation simply by changing the inclination of the balance.

The lower fulcrum 1005 is functionally required to form a corner so as to act as a fulcrum, as shown in the figure. Although this corner is a blunt angle, it is still more prone to wear than other parts. In order to prevent this, even if the corner is slightly cut (cornered corner), there is no problem as long as the function as a fulcrum is not lost. If the presence of a corner is disliked, a decorative bottom material shape forming member made of a soft material is formed in advance so as to fill a portion that is raised forward from the corner (lower fulcrum 1005), and the "third state" is formed. In this state, the load may be carried and the recess may be recessed upward as described above. Since this is only a fake decorative member for the above purpose, a soft material that can be elastically deformed sufficiently so as not to interfere with the basic function of the present invention is selected, and all the raised portions are shown so that the raised angle looks like zero. It may be embedded or may be formed to have an arbitrary rising angle (for example, 3 degrees).

The state shown in FIG. 25 (b) is the balance member 100.
8 is leaning forward, similar to wearing a normal high heel shoe, with the heel slightly elevated compared to the first and second states. This state is the opposite of the state in which the Achilles tendon is forcibly pulled as described in Conventional Example 1, and the state can be gently shifted to the next "fourth state" (kicking out) without pulling the Achilles tendon. In this way, the "third state" in which the Achilles tendon is not pulled and the state is prepared to easily move to the "fourth state" (kicking out) is hereinafter referred to as "high heel type bed leaving preparation state". The present invention is based on the principle of lowering the heel, but the "high heel type bed preparation state" that allows not pulling forcibly the Achilles tendon despite such a low heel is a normal deformation. Prevention of the progression of osteoarthritis of the knee by preventing or correcting the bent habit of implantation of the knee in patients with gonarthrosis, in other words, the bad habit of implantation such as extension of the Achilles tendon. And is effective in reducing pain.

FIG. 25 (c) shows the "fourth state" in which the weight of the human gradually moves from the "third state" in FIG. 25 (b) to kick the ground with the fingertip. At this time, an empty space 1003F is provided to facilitate bending of the bottom material, and flexibly bends to facilitate kicking out.

With the structure shown in the above embodiment, when the landing is started, the bottom surface 1007 of the metatarsal head is lifted from the horizontal line as shown in the "first state" of FIG. And the height of the upper surface of the bottom material is extremely lowered rearward, so that the center 50 of the ankle and the calcaneus lower end d
The line connecting to and (the hypotenuse R4 shown in FIG. 24) approaches the vertical line χ-χ, and the calcaneus lower end d is positioned as close as possible to the vertical line as indicated by the symbol d in FIGS. The position of this d is a low position that passes through the position c (FIG. 23) of the above-mentioned extremely low-heeled shoe, and as described in [Problems to be solved by the invention], the distance from the vertical line D = By reducing the value of D represented by R sinα, it is possible to reduce the bad force exerted on the knee "the knee bending effect of the heel" (this is called the "support effect close to the vertical line").

When the landing is started with the tip of the toe raised (the front part of the foot floating in the air), another effect is produced. In FIG. 24, when a force that lowers the heel acts as an arrow G, and thus acts to lift the bottom material of the metatarsal head into the air, this is the same as the above-mentioned harmful landing impact (arrows A and B). The force is exactly opposite in direction. Therefore, the force of arrow G is a harmful landing impact (arrow A,
It acts to antagonize or push back the force of B) to generate a beneficial force at the start of landing. The "toe raising effect" produced by the force of this arrow G acts as a supplementary effect to the main effect of the above-mentioned "support effect close to the vertical line", and acts synergistically to generate a "knee extension effect". Can be made.

On the other hand, in order to compensate for the natural shock absorbing function of humans lost due to the above-mentioned "knee joint non-flexing effect", in this embodiment, a special shock absorbing structure is provided, so that a special situation is created. It is possible to give a shock-absorbing function that is gentle to the sick and ill, beyond the natural shock-absorbing function of human beings, while giving a very suitable shock-absorbing power to the placed patient. The effect "can be increased.

Next, as shown in FIG. 25 (a), the balance-like state "second state" is entered to carry the entire weight. At this time, the strength of the balance member formed on the bottom member is 1 at the position of the metatarsal head.
It is set so that the sag of the balance member does not exceed 5 mm when a load of 5 kg is applied, and the length of the horizontal member 6 provided on the upper part of the balance member is the length from the heel portion 20 to the metatarsal head 30. Therefore, since the weight can be supported by the member in a balance-like manner, the weight can be moved smoothly. Further, in the state of this embodiment, since the lower fulcrum 1005 is located at a position approximately half of the total length of the footwear, it is in a state in which the mechanical load is small, and even a sick person with weak leg muscles can easily perform the “first state”. It is possible to shift from "to this" second state ", and by making the bottom surface up to the bottom material lower surface 1007 where the lower fulcrum 5100 second metatarsal head is located substantially linear, there is no resistance. , Easily the next "third
You can move to the “state”.

FIG. 25 (b) shows the "third state" in which the weight is supported by a substantially straight line portion between the bottom material lower surface 1007 of the metatarsal head and the lower fulcrum 1005. In this "third state", the state approaches that of wearing a normal high-heel shoe, and the state in which the Achilles tendon as described in [Problems to be Solved by the Invention] is released. In this way, we can easily move to the "third state",
The unreasonable extension of the Achilles tendon at the time of getting out of bed as described in the conventional example 1 does not occur, and even if it is used continuously, the harmful effect of extending the Achilles tendon does not occur unlike the conventional case. In addition to this, according to the present invention, the first aspect of the present invention does not concern the adverse effect of the excessive pulling of the Achilles tendon.
It is now possible to freely design the ideal lifting angle in the above condition to an appropriate value. This gives the ideal therapeutic effect. Further, in this "third state", the heel is in a raised state, which facilitates the transition to the next bed leaving stage "fourth state". Such a state in which the heel is raised to facilitate the transition to the next "fourth state" is hereinafter referred to as "high heel type bed preparation state".

The O-leg can be corrected by advancing the little finger side of the ridgeline formed by the lower fulcrum 1005.

FIG. 25 (c) shows the "fourth state" in which kicking is performed. By providing a void 1003F at a predetermined position from the metatarsal bone head of the sole to the front, the kicking is performed. The bottom material is easily bent when performing the feeding operation, and kicking out can be facilitated.

Further, although it is not directly related to the disease of the deformable knee joint, which is the object of the present invention, it has a secondary advantage.
In addition to improving the posture by the "knee extension effect" of the present invention, by advancing the little finger side of the ridgeline formed by the lower fulcrum 1005 or by providing an inclined surface on the upper surface of the footing material described later, the O-leg (or X-leg). Improve your posture by correcting your legs. Further, since some energy is consumed to extend the knee, a slight diet effect can be expected as in the shoe of Conventional Example 2. In all of these cases, unlike the above-mentioned conventional examples 1 and 2, the above-described drawbacks that cannot be avoided in the conventional examples are solved by the present invention, and there is an advantage that only advantages are obtained.

Example 7. In Example 6, the upper layer member 1009
Although an example is shown in which the elastic material is elastically deformable, in order to obtain the balance mechanism, as another embodiment, as shown in FIG.
As shown in (b), the upper layer member 1010 may be formed of a material that does not elastically deform, and the upper layer member 1010 may function as the horizontal member 1006 (FIG. 24) described above. Figure 31 (a)
The column member 1012 (column member 1003a in FIG. 24) that does not substantially elastically deform and the balance member 1012 that includes the upper layer member 1010 that does not substantially elastically deform.
Is formed. As the shock absorbing mechanism, the upper layer member 101
The space 1010a is formed by separating the rear end of 0 from the bottom material, and the heel region is elastically deformed, as in the case of FIG. In this embodiment, instead of providing a decorative heel shape forming member described later, the rear end e of the substantial heel is notched obliquely upward so as not to disturb the rear, and this portion is formed on the sloped surface d2.

In the case of this embodiment, the horizontal member 1006 shown in FIG. 24 corresponds to the upper layer member 1010 of FIG.
24 and 31 (a) have the same balance function, since the column member 1003a shown in (1) corresponds to the column member 1011. When the load is applied, as shown in FIG. 31 (b), the upper layer member 1010 dents the bottom member 1003d and descends, and the rear portion 1010b of the upper layer member 1010 descends to reduce the space 1010a. It is designed to absorb shocks. In this embodiment, the upper layer member 101
Since 0 does not elastically deform, it has a drawback that it does not fit to the foot, but in order to eliminate it, only the surface in contact with the foot may be formed of an elastic material (not shown) so as not to impair the balance function. .

As described above, since the balance mechanism is obtained by the upper layer member 1010 and the strut member 1011 which are not substantially elastically deformed, the horizontal layer member 1006 and the upper layer member 1009 shown in the sixth embodiment also serve as the upper layer member. 1010, and the same effect as that of the sixth embodiment can be obtained.

Example 8. In the footwear for patients with osteoarthritis of Example 6 described above, an example in which the footing material has an inclined surface so that the varus knee (valgus knee) can be corrected in addition to the effect of the above Example 8 will be described.

FIG. 32 shows the upper layer member 100 shown in FIG.
FIG. 33 shows a plan view of FIG. 9, and FIGS. 33 (a), (b) and (c) show the a-a section, the b-b section and the c-c section of the upper layer member of FIG. The surface of the upper layer member 1009 is shown in FIG.
As shown in FIG. 5, the inclined surface is formed so as to be lowered from left to right when viewed from the rear, and the inclined surface is formed so that the affected side direction of the joint of the patient is low.

Further, in order to prevent a human foot from skidding toward the lower side of the inclined surface, a reinforcing wall (not shown) may be provided on the lower side of the inclined surface.

The reason why the inclined surface is formed is well known, and the explanation will be simplified. However, as an example of the osteoarthritis of the knee, a varus knee (O leg, crab crotch) will be described as an example. As shown in, the axial direction (alignment) a-a is bent,
111 inside the joint rather than the cartilage 105 on the outside 112 of the joint
Received a lot of load, the cartilage was worn and lost, and the affected part 106
And the bones are exposed. As a means for correcting it, a slope is provided on the footing material, and the one side is low, so that the inside of the joint is lowered as shown by the downward arrow E to generate the force of the arrow F, as shown in FIG. Attempt to release the affected part from the load by correcting the axial direction as in 12. Although the effect can be recognized by this method, the effect cannot be corrected as desired, and the effect is not satisfied only by this means. The problem is solved in Example 8 and Example 9 below. is there.

In the above description, the example of the valgus knee is explained. However, in the case of the valgus knee, the outer side is read as the inner side and the inner side is read as the outer side in the above description, and the inclined surface is also inclined in the opposite direction. Is omitted.

The inclined surface is the upper layer member 100 in this embodiment.
Although the slope is formed by 9, the slope may be formed by the upper layer member 1010 or the upper surface of the stepping material may be sloped.

The upper layer member 10 shown in FIGS. 32 and 33.
When E.09 is formed of an elastic material, for example, E.I. V. A. It is formed using a foamed resin. In this case, the elasticity of the upper layer member 1009 is the same as the above-mentioned heel portion supporting elastic member 100.
Since it works in concert with 4a, it is under the same superordinate concept. However, there are functional differences between the two.

The elasticity of the heel portion supporting elastic member 1004a is required to be strong enough to withstand a load of 70 kg, for example. This requirement is strong elasticity, for example, to absorb the impact of rails and wheels in railways. Therefore, the elastic deformation is sufficient only when the weight of 70 kg is applied by walking. However, it is desirable that the upper layer member 1009 be deformed by a weaker force (for example, 1 kg) like a vehicle seat. The reason is that since the weight of 70 kg has not yet been loaded at the moment when landing is started, the heel portion supporting elastic member 1004a having strong elasticity is not deformed, and the upper layer member 1009 that is deformed by a weak force is at the moment of landing. Absorbs the initial shock of. The initial impact at the moment of landing is the most painful point for patients with knee pain. Even if the weight of 70 kg is applied as a static load after the moment of landing, the effect on pain is small.

However, the upper layer member 1009 is required to have the above-described function of retaining the shape of the slope in addition to the function of absorbing the initial impact, and the slope should not be deformed by losing the weight. Therefore, for example, it is required to have both the softness that elastically deforms even with a light initial impact of 1 kg and the strong shape holding function capable of withstanding a heavy static load of 70 kg and holding the shape.

The upper layer member 100 of the eighth embodiment shown in FIG.
No. 9 has a slanted surface as shown in FIGS. 33 (a), (b) and (c). In this case, the area of the upper layer member 1009 in contact with the human foot is significantly larger than that of the heel portion supporting elastic member 1004a, and the load per unit area is small. It can be formed of a softer material than 1004a.

Further, in order to have both the above functions, FIG.
It is also possible to make a modified example in which the portion indicated by the area Q in 2 is configured as described below. This area Q is an area that receives a strong pressure from the calcaneus and is a portion that receives the load immediately at the initial stage of landing, and this specially provided area Q can absorb a small initial impact. This area is larger than other areas due to a large number of bubbles not shown in FIG.
Although it is soft so that it can be easily elastically deformed even with a load of 1 kg, instead of this large number of bubbles, perforations, voids,
It may be softened by providing a recess or the like, or the upper layer member 1
Area Q using a material softer than the other parts of 009
May be formed.

With such a structure, while maintaining the shape retaining function of forming the inclined surface, at the same time, a weak initial impact on landing can be absorbed, and the pain at the moment of landing that the patient fears most can be prevented.

Further, by providing a slip stopper on the lower side of the inclined surface, it is possible to prevent the foot from slipping sideways and pushing and bending the upper.

Example 9. In an experiment using the footwear of Example 8, there was a situation where the effect of the inclined surface was not obtained unexpectedly, but the cause is unknown. While investigating why the expected effect could not be obtained, it was discovered that the cause was as follows. That is, since the heel portion supporting elastic member 4a is formed of an extremely flexible material,
Heel supporting elastic member 100 for supporting the high side of the inclined surface.
4a received a larger load than the heel portion supporting elastic member 1004a supporting the lower side of the inclined surface, and was compressed more and dropped. As described above, when the high side of the inclined surface descends more than the low side, the force of the arrow W opposite to the arrow E shown in FIG. 12 is generated, and the axis a- in the bad direction shown in FIG. 11 is generated. A force that bends a is generated. This phenomenon is not noticed unless observed carefully, but this is a fatal phenomenon in the case where the heel portion supporting elastic member 1004a is made of an especially soft material. Such a phenomenon in which the heel-supporting elastic member 1004a does not descend evenly left and right and the heel-supporting elastic member on the higher side of the inclined surface descends more is referred to as "heel uneven descent phenomenon".

In this embodiment, the above problem is solved as follows. FIG. 34 is a horizontal cross-sectional view of the bottom material bottom surface of the shoe according to the present embodiment taken along the bottom surface cover material 1003c at a height of 1 mm above the bottom material bottom surface. In the figure, the heel portion supporting elastic member 1004a has a small cross-sectional area on the affected part side 1004l and a large cross-sectional area on the opposite side 1004r. In other words, the vacant space 1004L on the affected part side is larger than the vacant space 1004R on the opposite side. I am doing it. Therefore, the affected area is compressed even with a weak pressure. In other words, by adjusting the cross-sectional area and providing a difference between the cross-sectional area of 1004l and the cross-sectional area of 1004r, it is corrected that the force in the bad direction described in the preceding section acts to bend the axis aa. This is an example of providing a difference in the size of the voids, but instead of the size of the voids, a difference in the size or number of recesses, bubbles, etc. (not shown) is provided to facilitate the descent on the affected area side. May be. Further, as shown in FIG. 35, the heel portion supporting elastic member 1004a is formed of a material S that is elastically deformed (soft) on the affected part side with a weak force,
The opposite side may be made of a material H that is hard to elastically deform (hard). An intermediate material band (not shown) may be provided between the material S and the material H. Also, these means may be used in combination.

By thus forming the heel portion supporting elastic member 1004a and forming the heel region, the weight is supported by the "soft heel portion supporting elastic member" which is the basic constitution of the present invention and "natural impact". While compensating for the loss of "absorption function", the "unequal descent of the heel" that would inevitably occur by providing the left and right inclined surfaces in that case is prevented, and the inclination angle of the left and right inclined surfaces is accurately adjusted. Can be held at.

Example 10. In the sixth to ninth embodiments, the position of the rear end e of the heel portion supporting elastic member 1004a, which is a part that substantially supports the weight, is 10% of the total length of the shoe in the present embodiment, measured from the rear end of the footwear. Provided. Further, a decorative heel-shape forming member is provided in the rear cutout portion of the heel portion supporting elastic member 1004a.

In the unloaded state shown in FIG. 26 (a), the heel portion supporting elastic member 1004a for supporting the weight on the heel portion at the start of landing is a pre-calculated elastic material and is formed in the calculated shape. When the landing is started and the weight is supported, the compression deformation is performed as shown in FIG. 24. However, in this embodiment, as shown in FIG.
Behind 004a is a decorative heel shape forming member 1004.
b, the decorative heel shape forming member 1 is formed.
Since 004b is formed so as to be less deformable than the heel portion supporting elastic member 1004a so as not to participate in carrying weight as much as possible, the “bending knee bending action of the heel” described in the conventional example.
Is reduced. As a result, "the knee bending action of the heel" shown in FIG. 20 (b) is prevented.

In this embodiment, the decorative heel shape forming member 1004b is easily deformed by enlarging the void 1004C. However, the same material as the heel portion supporting elastic member 1004a is used instead of the void 1004C. Formed,
The same effect can be obtained by increasing the number of recesses or bubbles (not shown), and the material may be made of a softer material than the heel portion supporting elastic member 1004a. It is preferable that the rear side from the position indicated by the symbol e in FIG. 26 (a) is formed as a rising slope d1 which is slightly raised so as to be separated from the ground as shown in the figure. As a modification, as shown in FIGS. 31 (a) and 31 (b), the inclined portion d2 may be formed by notching the rear from the rear end e of the heel portion supporting elastic member 1004a.

FIG. 37 is a view for explaining the operation of the decorative heel shape forming member 1004b shown in FIG. 36, and for the sake of explanation, the void 1004C (FIG. 36) of the decorative heel shape forming member 1004b is shown. In No. 37, it was assumed that the material was filled with 1004h. If you are going down a hill under the same conditions as in Figure 36, or if you land with your toes raised, a vacant area 1004
Since there is no C, the arrow A from the harmful ground explained in the conventional example
Reaction force is generated at 1004 h and impacts the affected part of the knee joint.

In FIG. 36, a large space 1 is larger than that in FIG. 37.
004C is easily deformed, and the reaction force received from the ground is small. Such an effect is effective not only when descending a slope but also when a patient's walking habit lands on a toe. If the appearance is not desired for an ideal function, the decorative heel shape forming members 1004b and 1004h should be omitted. As a modified example, as shown in FIG. 37, even when the void of the decorative heel shape forming member is filled with an elastic material as shown by 4h, the notch of the heel is steeper as shown by a chain line d-d. If it is formed as described above, the design is bad such that the rear part of the heel is substantially lacked from the rear end e, but an effect similar to the "support effect close to the vertical line" can be obtained. However, there are large individual differences in the patient's medical condition,
Moreover, there are cases where complications occur.

As described with reference to FIG. 37, there is a case where the elderly rear part 1004h is filled with a structure to compensate for the lack of standing ability for an elderly patient who is unable to stand up satisfactorily due to lack of standing ability. . Even in the case of such a structure as shown in FIG. 37, according to the present invention, the heel portion supporting elastic member 1004a.
Since it is made of a sufficiently soft elastic material, the substantial supporting point is located in the forward position, which makes it possible to obtain a similar effect, although not as clear as the above-mentioned “supporting effect close to the vertical line”. .

In each of the above-mentioned embodiments and modifications, the position of the lower surface rear end e of the heel portion supporting elastic member 1004a which substantially supports the weight is a position advanced from the rear end of the footwear body. This position is at least 5% of the total length of the footwear, preferably 6% to 7% or more, measured from the rear end of the footwear. In this embodiment, the rear end e of the heel portion supporting elastic member 1004a is set at a position 10% advanced from the rear end of the footwear body. As described above, the setting that the rear end e of the heel portion supporting elastic member 1004a is advanced is effective in further enhancing the “flexion effect of the knee joint”. That is, as a result of the rear end e being provided forward, the hypotenuse R4
It becomes possible to position the calcaneus lower end closer to the vertical line than in FIGS. 23 and 24.

Further, the heel rear end E shown in FIG. 17 as a prior application is formed of a hard material into angular corners, and at the moment of landing, only the rear end E carries a concentrated weight, On the other hand, in the embodiment of FIG. 24, since the heel portion supporting elastic member 1004a itself is formed of a soft material, even if the square shape of the rear end e shown in FIG. Is deformed flexibly, and rather bears the weight of the entire heel 1004a, so that it is considered that there is a substantial support point in front of the angular rear end e shown in the figure. It may be considered that the supporting point exists near the center of gravity V of the heel portion supporting elastic member 1004a as shown in FIG. Assuming the hypotenuse 5 passing through the center of gravity V, the hypotenuse R5 is indicated by the dotted line in FIGS. 24 and 23.
Passes through the hypotenuse R4 and becomes closer to the vertical line. Although the estimation of the angle of the hypotenuse R5 is not definite, it can be predicted that the hypothesis R5, R2, R3, or R4 shown in FIG. Thus, the hypotenuse is the vertical line χ-χ like R5.
The effect produced by the weight-bearing state of approaching to the is called "supporting effect close to the vertical line".

As described above, when the rear end of the heel portion supporting elastic member 1004a, which is substantially the heel, is located at a position advanced from the rear end of the footwear main body, the hypotenuse R5 is more vertical as described above. As the weight approaches χ, the weight is supported at a position advanced from the rear end of the footwear body, and the harmful force of the arrow A (FIG. 20) is prevented by the above-mentioned "support effect close to the vertical line", and It is possible to more sufficiently prevent the "knee bending effect of the heel".

If the bottom cover material 1003c is omitted, the voids and recesses formed by the constructions of the above-described sixth to tenth embodiments are exposed and unsightly. By filling with an elastic material, the appearance can be adjusted and a strange appearance can be prevented.

Further, FIG. 26 (b) shows an external view of the footwear of this embodiment. The upper layer member 100 described in each of the above-mentioned embodiments is shown.
9, the insole 1003m, the horizontal member 1006, the heel portion supporting elastic member 1004a, the shoe sole front elastic member 1003, and the column member 1003a are covered with a covering material (not shown).
Forming 003 g. Below the foot pad 1003g, there is provided a bottom cover member 1003c which is an exposed synthetic resin foam material without being covered with a covering material.
003g is joined to the bottom cover material 1003c.
The lower end 1002c of the upper 1002b is a footstep 1003.
g and the bottom cover member 1003c are sewn in. As shown in FIGS. 38 (a) and 38 (b), the method of sewing the upper 1002b, the stepping material 1003g, and the bottom cover material 1003c is as follows. How to be sewn in between,
Alternatively, the heel portion supporting elastic member 1004a and the bottom cover material 1
There are various methods such as stitching with 003c, but sewing is not limited to this method because it is not essentially related to the function of the present invention.

As described above, by covering each member with the covering material (not shown), it is possible to prevent each member from being exposed and the appearance being unsightly.

[0211]

【The invention's effect】

[Effect 1] As described above, according to the present invention, in the footwear including the instep cover and the sole without the rear portion thereof, the heel of the foot is subjected to the load, and the second middle portion of the sole is used. A line connecting the lower surface of the bottom material where the head of the foot is located and the front end of the lower surface of the heel area of the bottom material has a horizontal line at an angle with respect to an extension line of the horizontal line connecting the rear end of the heel area lower surface and the front end of the heel area lower surface. So that the thickness from the upper surface of the bottom member to the ground in the heel region is smaller than that in the front part of the heel region, and
Since the heel of the heel area is equipped with a shock absorbing mechanism that the height of the heel of the surface in contact with the human foot will drop when a load is applied, the bottom surface of the bottom material where the metatarsal bone head is located at the time of landing The "support effect close to the vertical line" obtained by lifting from the ground prevents the "backward protrusion of the heel", and the "knee bending effect of the heel" that pushes up the calcaneus at the moment of landing and bends the knee is reduced. As a result, the "non-flexion effect of the knee joint" is obtained, and the "knee extension effect" is also obtained by the "toe lift". In addition, a shock absorption mechanism is provided to compensate for the "loss of natural shock absorption function" that is inevitable as a side effect of such a structure, so it is possible to absorb the shock at the time of landing and the knee joint. Can be prevented from wearing. Furthermore, "First
The transition from the “state” to the “third state” through the “second state” can be easily performed by simply changing the inclination of the footwear, and the “third state” can be changed to the next state. It is in a "high heel-type preparation for getting out of bed" that makes it easier to move to the bed, so it corrects the habit of patients with knee joint disease who have the habit of starting to land in a posture in which the knee is bent and the Achilles tendon is extended. The above-mentioned "high heel type bed preparation state", which is easy to get out of bed, is effective for patients with weak muscles. The above functions physically act to prevent knee joint wear in patients with osteoarthritis of the knee. It is possible to prevent the progress of symptoms.

According to the invention, in the footwear for patients with knee osteoarthritis, the lower surface of the sole material on which the second metatarsal head is located is lifted from the ground, and the heel of the footwear is loaded with 70 kg. Since the angle is at least 5 degrees in the received state, there is an effect that the above-mentioned effect can be ensured by properly maintaining the rising angle described in [Effect 1].

Further, according to the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the impact absorbing mechanism is located at the heel of a human and at least a part of which elastically deforms easily under the load of the heel. Has a heel part supporting elastic member or an upper layer member made of an elastic material, and the elastic deformation causes the surface of the upper layer member in contact with the heel part of a human being to drop. Therefore, the impact described in the above [Effect 1] is applied. It can be absorbed to enhance the above effects.

According to the present invention, in the footwear for knee osteoarthritis patients, the sole material includes a lower fulcrum located at the front end of the heel region and a horizontal member located above the lower fulcrum. Since the balance member is formed by the above, it is possible to shift from the “first state” described in the above [Effect 1] to the “third state” without resistance, and the effect of [Effect 1] can be enhanced.

Further, according to the present invention, in the footwear for a patient with knee osteoarthritis, the balance member receives the weight at the position of the metatarsal head and the position of the heel, and the weight is set with the lower fulcrum as a fulcrum. In order to support the balance member in a horizontal manner, the horizontal length of the balance member substantially reaches the position of the metatarsal head from the position of the calcaneus. The effect of 1] can be enhanced.

According to the invention, in the footwear for patients with knee osteoarthritis, the position of the lower fulcrum is measured from the rear end of the footwear body along the second metatarsal bone to determine the total length of the footwear body. Since it is installed at a distance of 41% to 65%, there is an effect that the position of the lower fulcrum can be set to the most suitable position for obtaining the effect described in [Effect 1].

According to the invention, in the above-mentioned footwear for patients with knee osteoarthritis, the lower fulcrum forms a ridge line across the bottom surface of the bottom material, and the distance of the ridge line from the heel rear end is Measured parallel to the line connecting the second metatarsal head and the center of the calcaneus, the ridgeline on the little finger side was moved forward compared to the ridgeline on the thumb side, so it is particularly effective for the O-leg in addition to the effect of [Effect 1] above. The effect is to set the position of the lower fulcrum.

Further, according to the present invention, in the footwear for a patient with knee osteoarthritis, the shape of the bottom material bottom surface between the lower surface of the bottom material where the second metatarsal head is located and the lower fulcrum is Sometimes it is formed in a shape that is substantially straight or recessed upward when viewed from the side, so that the above lower fulcrum is prevented from moving while the weight is moving, and the resistance of patients with knee osteoarthritis at walking is reduced. There is an effect that can be done.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the shape of the bottom material bottom surface between the lower end of the heel region lower surface and the lower fulcrum is seen from the side when loaded. Since it is formed into a substantially linear shape or a shape that is recessed upward, there is an effect that the lifting angle described in [Effect 1] can be accurately maintained, the lower fulcrum does not move, and the above angle can be stably maintained. .

According to the present invention, in the footwear for patients with knee osteoarthritis, the shock absorbing mechanism provided on the surface contacting the heel of the human has a reaction force received from the ground by the heel when the human walks. Since the knee bends forward and absorbs impact, instead of or beyond the impact absorption function of the human knee, shock absorption is achieved,
The impact at the time of landing is absorbed, and the impact absorption effect described in [Effect 1] is further enhanced.

According to the present invention, in the footwear for patients with knee osteoarthritis, the elastic force of the heel-supporting elastic member can be easily elastically deformed as compared with each member forming the balance member. Therefore, there is an effect that the impact absorbing effect and the weight carrying function described in [Effect 1] can be obtained.

Further, according to the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the difference in elastic force between the balance member and the heel-supporting elastic member can be taken into account by eliminating bubbles, perforations, voids and recesses. Since it is formed by at least one of the difference in the size or the number of the shapes, the difference in the cross-sectional area or the difference in the elasticity of the material, the heel supporting elastic member having the impact absorbing effect and the weight supporting function described in the preceding paragraph are provided. There is an effect that it is possible to obtain a difference in elasticity with the balance member.

According to the invention, in the footwear for patients with knee osteoarthritis, the impact absorbing mechanism is an upper layer member provided on the foot pad when the surface in contact with the heel of a human being receives a load of 70 kg. Alternatively, since the impact is absorbed by the elastic deformation of the heel portion supporting elastic member, and the height of the surface in contact with the lower end of the human heel causes a drop of at least 2% of the total footwear length, the above [Effect 1] is obtained. There is an effect that the impact absorption effect described above can be made sufficient.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, at least a part of the shock absorbing mechanism is formed of a shock absorbing material, so that the above [effect 1]. There is an effect that it is possible to absorb a minute impact component of the impact described in the above.

[Effect 2] According to the present invention, in the footwear for patients with knee osteoarthritis, when loaded,
In order to lower the affected part of the knee joint, an inclined surface that lowers from left to right or lowers from right to left when viewed from the rear is formed on the upper surface of the stepping material. Therefore, in addition to the above [Effect 1], There is an effect that the axial direction of each bone connecting the upper and lower joints can be corrected so as to protect the affected side of the knee joint, and a synergistic effect with the above [Effect 1] can be obtained.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the inclined surface is formed in the upper layer member made of the elastic material provided in the footing material of the footwear body. In addition to the above, there is an effect that the impact at the time of landing described in [Effect 1] can be absorbed by the elastic upper layer member.

Further, according to the present invention, in the footwear for a patient with knee osteoarthritis, the inclined surface is formed so that the portion of the inclined surface for supporting a human heel is elastically deformed more easily than other areas. Therefore, in addition to the effect of the preceding paragraph, there is an effect that the initial impact at the time of landing can be absorbed.

Further, according to the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the difference in partial elastic force of the inclined surface is determined by the difference in shape of bubbles, perforations, voids and recesses. Alternatively, since it is formed by at least one of the difference in the number or the difference in the elasticity of the material, there is an effect that the difference in the elastic force for obtaining the effect of the preceding paragraph can be properly adjusted and the above effect can be ensured.

Further, according to the invention, in the footwear for patients with knee osteoarthritis, in the heel part supporting elastic member, the portion supporting the lower side of the inclined surface supports the higher side of the inclined surface. Since a difference in elastic force between the low-side supporting portion and the high-side supporting portion is provided so that the lower side supporting portion and the higher side supporting portion are more easily lowered, the inclined surface for obtaining the above [Effect 2] is formed as a result. As a result, there is an effect of being able to absorb the impact described in the above [Effect 1] while preventing the "heel uneven descent phenomenon" that occurs as described above.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the difference in the partial elastic force of the elastic member for supporting the heel part can be determined by the shapes of bubbles, perforations, voids and recesses. Formed by at least one of the difference in size or the number, the difference in cross-sectional area or the difference in elasticity of the material,
You can properly adjust the difference in elastic force to obtain the effect of the previous item,
There is an effect that can surely achieve the effect of the preceding paragraph.

Further, according to the present invention, in the footwear for the patient with knee osteoarthritis, a decorative heel-shape forming member which is more easily elastically deformed behind the heel-portion elastic member than the heel-portion elastic member. Therefore, the above [Effect 1]
To obtain a shoe that does not look strange even if the lower end of the heel-supporting elastic member is positioned further forward than the rear end of the shoe in order to obtain the "support effect close to the vertical line" described in There is an effect that can be.

Further, according to the present invention, in the footwear for patients with knee osteoarthritis, the position of the rear end of the lower surface of the heel part supporting elastic member is at least 5 of the total length of the footwear from the rear end of the footwear.
Since the position is set to%, there is an effect that the "knee bending effect of the heel" can be reduced by the "support effect close to the vertical line" described in [Effect 1] above.

According to the present invention, in the footwear for patients with knee osteoarthritis, the balance member, the heel portion supporting elastic member, and the decorative heel formed between the upper surface of the sole and the ground contact surface. Since the space which each member of the shape forming member has and the space between each member are filled with the elastic material whose elastic force is weaker than that of each member, there is an effect that the appearance can be adjusted.

According to the present invention, in the footwear for patients with knee osteoarthritis, a decorative sole made of an elastic material that is easily elastically deformed is formed on the bottom surface of the bottom material on which the raised second metatarsal head is located. Since the material shape forming member is included, in addition to the effect described in [Effect 1] above, there is an effect that a shoe having an appearance closer to that of a normal shoe can be obtained.

Further, according to the present invention, in the above-mentioned footwear for patients with knee osteoarthritis, the insole, the bottom elastic member of the bottom material, the bottom cover material, the upper layer member, the balance member, the elastic member supporting the heel portion, Since at least two of them are covered with a covering material to make the appearance look unitary, even if each constituent member is made of a different material and has a different color, they are wrapped in the covering material and look like one body. Unlike shoes, even footwear lacking a rear instep has the effect of preventing unsightly parts due to lack of an instep.

[Comprehensive Effect] The above-described functions and actions are completely physical and prevent wear of the joint affected area due to friction, and therefore, if used regularly, the progression of the disease can be prevented. In addition, since it does not require the passage of time like a medicine, when the patient puts on the footwear, the pain at the time of walking disappears immediately. That is, as a result, "a patient who has difficulty walking due to pain in the affected area can walk", and can be expected to save many patients with osteoarthritis of the knee.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a “first state” when walking with footwear for a patient with knee joint disease according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view (FIG. 2 (a)) showing a “second state” when walking with footwear for a knee joint patient according to the first embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing "state" (FIG. 2
(b)), Vertical sectional view showing the "fourth state" (Fig. 2 (c)).

FIG. 3 is a longitudinal sectional view (FIG. 3 (a)) and an external view (FIG. 3 (b)) showing footwear for a knee joint patient according to the first embodiment of the present invention.
), And a bottom view of this footwear from the bottom (Fig. 3 (c)
).

FIG. 4 is a vertical cross-sectional view showing a modified example of the footwear for a knee joint patient according to the first embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view (FIG. 5 (a)) showing a modified example of footwear for a knee joint patient according to the first embodiment of the present invention, and a horizontal cross-section of the sole just above the bottom cover material of the footwear. Figure (Figure 5
(b)).

FIG. 6 is a longitudinal sectional view for explaining the function of the footwear for knee joint patients according to the first embodiment of the present invention (FIGS. 6 (a) and 6 (b)).
).

FIG. 7 is a vertical cross-sectional view showing a modified example of the footwear for a knee joint patient according to the first embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view showing footwear for a knee joint patient according to the second embodiment of the present invention (FIGS. 8 (a) and 8 (b)).

FIG. 9 is a plan view of an internal member of footwear for a patient with knee joint disease according to a third embodiment of the present invention.

10 is a sectional view taken along the line aa of the internal member of FIG. 9 (FIG. 10 (a)).
), Bb sectional drawing (FIG.10 (b)), cc sectional drawing (FIG.10 (c)).

FIG. 11 is an explanatory view showing a joint of a patient.

FIG. 12 is an explanatory diagram showing a joint of a patient.

FIG. 13 is a horizontal cross-sectional view of the sole of the shoe immediately above the bottom cover material of the footwear for knee joint patients according to the fourth embodiment of the present invention.

14 is a horizontal cross-sectional view of a shoe sole immediately above a bottom cover material showing a modification of FIG.

FIG. 15 is a vertical cross-sectional view showing footwear for a knee joint patient according to a fifth embodiment of the present invention.

16 is an explanatory diagram showing the operation of FIG.

FIG. 17 is a vertical sectional view showing a shoe of the earlier application.

FIG. 18 is a side view showing the appearance of a conventional shoe.

FIG. 19 is a side view showing the appearance of a conventional shoe.

FIG. 20 is an explanatory view illustrating an action of a force applied to a human heel on a knee.

FIG. 21 is an explanatory view illustrating the operation of a conventional high heel shoe.

FIG. 22 is an explanatory view for explaining the action of a conventional shoe with a low heel.

FIG. 23 is an explanatory view for explaining the theory of footwear for knee joint patients according to the first embodiment of the present invention.

FIG. 24 is a longitudinal sectional view showing a “first state” when walking with footwear for a patient with knee joint disease according to the sixth embodiment of the present invention.

FIG. 25 is a longitudinal sectional view (FIG. 2 (a)) showing the “second state” when walking with the footwear for the knee joint patient according to the sixth embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing "state" (FIG. 2
(b)), Vertical sectional view showing the "fourth state" (Fig. 2 (c)).

FIG. 26 is a longitudinal sectional view (FIG. 3 (a)) and an external view (FIG. 3 (b)) showing footwear for a knee joint patient according to a sixth embodiment of the present invention.
), And a bottom view of this footwear from the bottom (Fig. 3 (c)
).

FIG. 27 is a vertical cross-sectional view showing a modified example of the footwear for patients with knee osteoarthritis according to the sixth embodiment of the present invention.

FIG. 28 is a longitudinal sectional view (FIG. 28 (a)) showing a modified example of footwear for a knee joint patient according to the sixth embodiment of the present invention, and a horizontal bottom of the sole just above the bottom cover material of the footwear. Sectional view (Fig. 28 (b)).

FIG. 29 is a longitudinal sectional view for explaining the function of the footwear for a knee joint patient according to the sixth embodiment of the present invention (FIG. 29 (a), FIG. 29).
(b)).

FIG. 30 is a vertical cross-sectional view showing a modified example of the footwear for knee joint patients according to the sixth embodiment of the present invention.

FIG. 31 is a vertical cross-sectional view showing the footwear for knee joint patients according to the seventh embodiment of the present invention (FIGS. 31 (a) and 31 (b)).

FIG. 32 is a plan view of an upper layer member of footwear for a patient with knee joint disease according to an eighth embodiment of the present invention.

33 is a cross-sectional view taken along the line aa of the upper layer member shown in FIG.
(a)), bb sectional drawing (FIG.33 (b)), cc sectional drawing (FIG.33 (c)).

FIG. 34 is a horizontal cross-sectional view of the bottom material bottom just above the bottom cover material of the footwear for patients with knee osteoarthritis according to the ninth embodiment of the present invention.

FIG. 35 is a horizontal cross-sectional view of the bottom material bottom portion immediately above the bottom surface cover material showing a modification example of FIG. 34.

FIG. 36 is a longitudinal sectional view showing footwear for a knee joint arthroplasty patient according to a tenth embodiment of the present invention.

FIG. 37 is an explanatory diagram showing the operation of FIG. 36.

FIG. 38 is a view for explaining sewing in a general slipper (FIGS. 38 (a) and 38 (b)).

[Explanation of symbols]

100 shoe body, 101 upper, 102 shoe sole, 3 shoe sole front elastic member, 3a strut member, 3b strut member portion,
3c shoe cover material, 3m insole, 3F vacant space, 4 heel region, 4a heel supporting elastic member, 4b decorative heel shape forming member, 4M vacant space, 4C vacant space, 4L vacant space, 4R vacant space, 5 Lower fulcrum, 6 Horizontal member, 7 Lower surface of shoe sole where metatarsal head is located, 8 Balance member, 9 Inner member, 10 Inner member, 11 Strut, 12 Balance member,
10A space, 20 human heel, 30 human metatarsal head, 40 human metatarsal, 50 center of ankle, 6
0 human tibia, 70 human femur, 105 lateral cartilage, 106 affected part, V center of gravity of elastic member supporting heel, 110
0 Footwear body, 1101 Instep, 1102 Bottom material, 100
3 Bottom material front elastic member, 10003a support member, 10
03b prop member part, 1003c shoe sole cover material, 1
003m insole, 1003F void, 1004 heel region, 1004a heel supporting elastic member, 1004b decorative heel shape forming member, 1004M void, 1004
C vacant space, 1004L vacant space, 1004R vacant space, 10
05 Lower fulcrum, 1006 Horizontal member, 1007 Lower surface of sole where metatarsal head is located, 1008 Balance member, 10
09 upper layer member, 1010 upper layer member, 1011 column, 1012 balance member, 1010a space.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (31) Priority claim number Japanese Patent Application No. 5-252260 (32) Priority date Hei 5 (1993) September 14 (33) Priority claim country Japan (JP) (31) Priority Claim Number Japanese Patent Application No. 5-316015 (32) Priority Day No. 5 (1993) November 22 (33) Country of priority claim Japan (JP) (31) Priority claim number Japanese Patent Application No. 6-107764 (32) Priority Hihei 6 (1994) April 21 (33) Priority claiming country Japan (JP) (31) Priority claim number Japanese Patent Application No. 6-136338 (32) Priority Day Hei 6 (1994) May 26 (33) (72) Inventor Mitsuko Kosaka 3-9-13 Shiroyamadai, Sakai City, Osaka Prefecture (72) Kumiko Isaka 41 Kannonji Town, Izumi City, Osaka Prefecture

Claims (25)

[Claims] 1. Footwear for a patient suffering from osteoarthritis of the knee, which is composed of an instep cover and a sole material having no rear portion, and the second portion of the sole material with the heel part thereof being loaded. The line connecting the lower surface of the bottom material where the metatarsal head is located and the front end of the lower surface of the heel area of the bottom material has an angle with respect to the extension line of the horizontal line connecting the rear end of the heel area lower surface and the front end of the heel area lower surface. As it rises from the horizon, the thickness of the heel material from the bottom material upper surface to the ground in the heel region is formed so that the heel region rear part is thinner than the heel region front part, and the heel region rear part is formed on the human foot. Footwear for patients with knee osteoarthritis, characterized in that it is provided with a shock absorbing mechanism such that the height of the heel portion of the contact surface is lowered when a load is applied. 2. The footwear for patients with knee osteoarthritis according to claim 1, wherein an angle at which the lower surface of the bottom material on which the second metatarsal head is located floats from the ground is such that the heel of the footwear has a load of 70 kg. Footwear for patients with knee osteoarthritis, characterized in that the footwear is at an angle of at least 5 degrees when received. 3. The footwear for patients with knee osteoarthritis according to claim 1, wherein the impact absorbing mechanism is located at a heel portion of a human and is at least partially elastically deformed by a load of the heel portion. For a patient with osteoarthritis of the knee, characterized in that it has a heel-supporting elastic member or an upper layer member made of an elastic material, and the surface of the internal member in contact with the heel of a human is lowered by its elastic deformation. Footwear. 4. The footwear for patients with knee osteoarthritis according to claim 1, wherein the sole material includes a lower fulcrum located at a front end of the heel region and a horizontal member located above the lower fulcrum. Footwear for patients with knee osteoarthritis, characterized in that a balance member is formed by. 5. The footwear for patients with knee osteoarthritis according to claim 1, wherein the balance member receives weight at the position of the metatarsal head and the position of the heel, and the lower fulcrum is a fulcrum. Footwear for patients with knee osteoarthritis, characterized in that its horizontal length substantially reaches from the position of the calcaneus to the position of the metatarsal head so as to carry the weight as a balance. 6. The footwear for patients with knee osteoarthritis according to claim 4, wherein the position of the lower fulcrum is measured from the rear end of the footwear body along the second metatarsal bone to measure the total length of the footwear body. 41% to 65
Footwear for patients with knee osteoarthritis characterized by being at a distance of%. 7. The footwear for patients with knee osteoarthritis according to claim 4 or 6, wherein the lower fulcrum forms a ridge line across the bottom of the sole, and the distance of the ridge from the heel rear end. Footwear for patients with knee osteoarthritis, characterized in that the ridgeline on the little finger side is more advanced than the ridgeline on the thumb side, measured parallel to the line connecting the second metatarsal head and the center of the calcaneus . 8. The footwear for patients with knee osteoarthritis according to claim 1 or 4, wherein the bottom material bottom surface between the lower surface of the bottom material on which the second metatarsal head is located and the lower fulcrum is formed. Footwear for patients with knee osteoarthritis, characterized in that it has a shape that is substantially linear or dented upward when viewed from the side when loaded. 9. The footwear for patients with knee osteoarthritis according to claim 1 or 4, wherein the bottom material bottom surface between the rear end of the lower surface of the heel region and the lower fulcrum has a shape from the side when loaded. Footwear for patients with knee osteoarthritis, characterized in that it is substantially straight or dented upward when viewed. 10. The footwear for patients with knee osteoarthritis according to claim 1 or 3, wherein the shock absorbing mechanism provided on the surface contacting the heel of the human is
When the human walks, the knee bends forward with the reaction force received by the heel from the ground to absorb the shock. Instead of the shock absorbing function of the human's knee, or to exceed that function to achieve shock absorption. Footwear for patients with osteoarthritis of the knee characterized by the following. 11. The footwear for patients with knee osteoarthritis according to claim 3 or 4, wherein the elastic force of the heel-supporting elastic member is elastically deformed more easily than the respective members forming the balance member. Footwear for patients with osteoarthritis of the knee characterized by being able to. 12. The footwear for patients with knee osteoarthritis according to claim 11, wherein the difference in elastic force between the balance member and the heel-supporting elastic member is due to air bubbles, perforations, voids and recesses. Footwear for patients with knee osteoarthritis, which is formed by at least one of a difference in size or number of shapes, a difference in cross-sectional area, or a difference in material elasticity. 13. The footwear for patients with knee osteoarthritis according to claim 3, wherein the impact absorbing mechanism has a load 7 on a surface in contact with a human heel portion.
When 0 kg is received, the upper layer member provided on the foot pad or the elastic deformation of the heel portion supporting elastic member absorbs the impact, and the height of the surface in contact with the lower end of the human heel is at least 2% of the total length of the footwear body. Footwear for patients with knee osteoarthritis, characterized in that it causes a fall of the knee. 14. The footwear for patients with knee osteoarthritis according to claim 10, wherein at least a part of the shock absorbing mechanism is formed of a shock absorbing material. Footwear for patients with knee osteoarthritis. 15. The footwear for patients with knee osteoarthritis according to claim 1, 3, 4, 6, or 7, wherein the affected part of the knee joint is lowered when loaded.
Footwear for knee osteoarthritis patients, wherein an inclined surface that decreases from left to right or from right to left when viewed from the rear is formed on the upper surface of the stepping material. 16. The footwear for a patient with knee osteoarthritis according to claim 15, wherein the inclined surface is formed on an upper layer member made of an elastic material provided on a stepping material of the footwear body. Footwear for knee osteoarthritis patients. 17. The footwear for a patient with knee osteoarthritis according to claim 15, wherein the inclined surface is formed such that a portion of the inclined surface that supports a human heel is elastically deformed more easily than other regions. Footwear for patients with knee osteoarthritis, characterized in that 18. The footwear for patients with knee osteoarthritis according to claim 17, wherein the difference in partial elastic force of the inclined surface is the difference in shape of bubbles, perforations, voids and recesses. Footwear for patients with knee osteoarthritis, which is formed by at least one of a difference in the number and a difference in material elasticity. 19. The footwear for patients with knee osteoarthritis according to claim 1, 3, or 15, wherein the heel portion supporting elastic member has a portion for supporting a lower side of the inclined surface, the inclined surface. Footwear for patients with knee osteoarthritis, characterized in that a difference in elastic force is provided between the lower side supporting portion and the higher side supporting portion so that the lower side supporting portion can be lowered more easily than the portion supporting the higher side. . 20. Footwear for a patient with knee osteoarthritis according to claim 19, wherein the difference in partial elastic force of the heel-supporting elastic member is due to air bubbles,
Patients with knee osteoarthritis characterized by being formed by at least one of a difference in size or number of perforations, voids and recesses, and a difference in cross-sectional area or elasticity of material. Footwear. 21. The footwear for patients with knee osteoarthritis according to claim 1 or 3, wherein a decorative heel shape that is more elastically deformed than the heel-supporting elastic member behind the heel-supporting elastic member. Footwear for patients with knee osteoarthritis, characterized in that it has a forming member. 22. Footwear for a patient with knee osteoarthritis according to claim 3 or 21, wherein the rear end of the lower surface of the heel-supporting elastic member is located at least 5% of the total footwear length from the rear end of the footwear. Footwear for knee osteoarthritis patients. 23. The footwear for patients with knee osteoarthritis according to claim 1, 3, 20 or 21, wherein the balance member and the heel portion carrying elastic member formed between an upper surface of a sole and a ground contact surface. Member, the space of each member of the decorative heel-shape forming member, and the space between the members are filled with an elastic material having an elastic force weaker than that of each member, and a knee osteoarthritis patient Footwear. 24. The footwear for a patient with knee osteoarthritis according to claim 1, wherein a bottom material bottom surface on which the raised second metatarsal head is located,
Footwear for knee osteoarthritis patients, characterized by having a decorative sole material shape forming member made of an elastic material that is easily elastically deformed. 25. Footwear for a patient with knee osteoarthritis according to claim 1, 3, 4, 15, 16 or 21, wherein a midsole, a bottom material front elastic member, a bottom cover material, and the upper layer member. Footwear for patients with knee osteoarthritis, characterized in that at least two of the balance member and the elastic member for supporting the heel are covered with a covering material so that the appearance is shown integrally.