Insoles and footwear

Abstract

To provide an insole and footwear that can be used safely for a long period of time by both the elderly and young people, and that can prevent hallux valgus and flat feet and inhibit the progression of the symptoms. [Solution] The problem was solved by an insole comprising a medial arch support slope, an lateral arch support slope that supports the lateral arch, a central arch elevator that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and the flexor digitorum brevis that cover the plantar sides of the third and fourth metatarsals, from near the posterior side of the MTP joint to near the Chopart joint, a phalangeal elevator that is formed by a mountain-like section that forms a gentle downward slope and protrudes downward from the back surface or upward from the surface, a flat surface provided between the central arch elevator and the phalangeal elevator, and a heel cup.

Description

[Technical Field]

[0001] The present invention relates to an insole and footwear for preventing symptoms of hallux valgus and flat feet and suppressing the progression of the symptoms. [Background technology]

[0002] Hallux valgus is a condition in which the transverse arch of the foot collapses, widening the foot and compressing the big toe inward, while flat feet is a condition in which the medial longitudinal arch collapses, causing the talus to tilt inward and the sole to become flat.The transverse arch, medial longitudinal arch, and lateral longitudinal arch are all interrelated, and flat feet caused by a collapsed medial longitudinal arch worsen hallux valgus, while a collapsed lateral longitudinal arch affects the collapse of the entire arch and is indirectly involved in hallux valgus and flat feet.

[0003] As the number of Japanese-style rooms in homes is decreasing and the number of Western-style rooms is increasing, and as Japan becomes an increasingly aging society, more elderly people will spend time indoors. Therefore, it is predicted that people will spend more time wearing slippers in Western-style rooms and carpeted Japanese-style rooms.

[0004] Patent Document 1 discloses an insole body made of a flexible plate-like material as a whole, having a planar shape corresponding to the sole of the foot, and on the upper surface of the insole body, there is provided a metatarsal ridge integrally formed with three ridges: first, a central ridge that ridges so as to abut against the metatarsal arches of the second to fourth toes; second, an outer longitudinal arch ridge that extends continuously from the central ridge toward the outer longitudinal arch and ridges so as to cross the lower part of the outer longitudinal arch; and third, first and second intermetatarsal ridges that extend continuously from the medial tip of the central ridge along the space between the first metatarsal and the second metatarsal to the vicinity of the heads of these metatarsals. The insole disclosed has a bolster ridge that is raised to fill the lower space on the tip side, and further has a metatarsal head pocket that is a recess surrounded by these ridges, formed between the metatarsal ridge and the lateral part of the bolster, on the lateral side of the first and second intermetatarsal ridges of the metatarsal ridges, and a sesamoid pocket that is a recess surrounded by these ridges, formed between the metatarsal ridge and the medial part of the bolster, on the medial side of the first and second intermetatarsal ridges of the metatarsal ridges, and further has a lateral longitudinal arch filling ridge that is raised to abut against and support the cuboid bone located at the rear of the lateral longitudinal arch.

[0005] Patent Document 2 discloses an insole for treating hallux valgus, which has a midsole with a big toe stabilizing recess, a heel stabilizing recess, an arch supporting protrusion, and a metatarsal supporting protrusion on the midsole, the arch supporting protrusion protruding to lift the first metatarsal, first cuneiform, and navicular bone of the foot when worn, the metatarsal supporting protrusion protruding to lift the second, third, fourth, and fifth metatarsal bones of the foot when worn, and the metatarsal supporting protrusion protruding most at the part where the tips of the second and third metatarsal come into contact when worn. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-275 [Patent Document 2] Japanese Patent Application Publication No. 9-140405 Summary of the Invention [Problem to be solved by the invention]

[0007] In the invention of Patent Document 1, the toe pillow, which is a component, has a curved planar shape with a protrusion height of about 2 to 4 mm, filling the space below where the proximal and middle phalanges bend downward, and has a mountain-like convex shape with a steep slope in the front-to-back direction of the arc. Elderly people's muscles atrophy with age, and localized pressure stimulation causes muscle hypertension and pain, and furthermore, pushing up due to the convex shape can cause the muscles to become overstretched, making it difficult to bend the toes.

[0008] The invention of Patent Document 2 has a problem in that the thumb stabilization recess, which is a component, sinks into the recess when weight is applied to the thumb, but for people who do not apply much weight to their thumb due to their walking habits, the thumb does not reach the recess and floats up, making it difficult to prevent slipping.Furthermore, elderly people who experience muscle atrophy with age have reduced stability in the arches and toes, so if only the thumb is sunk, there is a problem in that the thumb does not receive adequate support and becomes unstable.

[0009] The inventions of Patent Document 1 and Patent Document 2 have the problem that when the feet get steamy inside the shoes, moisture is generated and the grip of the soles of the feet decreases, so for people with hallux valgus, the feet tend to slip forward, which has a negative impact on the hallux valgus.For people with flat feet, the entire sole of the foot comes into close contact inside the shoes, causing the feet to get steamy and smelly, and leading to the development of skin diseases.

[0010] The present invention was made in view of these problems, and aims to provide an insole and footwear that can be used safely for long periods of time by both the elderly and young people, by maintaining a normal skeletal state, preventing the feet from slipping and getting sweaty in shoes, and enabling the prevention of hallux valgus and flat feet and the suppression of the progression of symptoms. [Means for solving the problem]

[0011] The insole according to claim 1 comprises a medial arch supporting slope part that elastically supports the medial longitudinal arch for inhibiting descent of the medial arch of the foot and inhibiting pronation of the ankle joint, a lateral arch supporting slope part that elastically supports the lateral longitudinal arch for inhibiting descent of the lateral arch of the foot and inhibiting supination of the ankle joint, a central arch lifting part that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi brevis muscle that cover the plantar sides of the third and fourth metatarsals, from the vicinity of the posterior MTP joint to the vicinity of the Chopart joint, and a central arch lifting part that elastically presses and supports from the plantar side the proximal ends of the first to fifth proximal phalanges and the first to fifth distal phalanges, with the distal ends of the first to fifth proximal phalanges as ridges. It is characterized by comprising: a metatarsal elevator part formed by protruding downward from the back surface or protruding upward from the front surface, with a mountain range-like part that forms a gentle downward slope toward the distal end of the phalanges; an MTP joint support surface that supports the first to fifth MTP joints on a plane provided between the central arch elevator part and the metatarsal elevator part; and a heel cup that forms peripheral wall surfaces of the heel fat pads on the left, right, and rear sides to encase the heel, and the front peripheral wall surface that connects to the surface of the central arch elevator part forms a gentle slope and has a roughly circular, flat bottom surface into which the heel can be fitted.

[0012] The insole described in claim 2 is characterized in that, in claim 1, the height of the ridge of the mountain-like portion of the phalangeal elevation is higher at both ends in the medial and lateral directions and lowered by being concave in the center.

[0013] The insole described in claim 3 is characterized in that, in claim 1 or 2, the gentle downward slope from the ridgeline of the mountain-like portion of the phalangeal elevation part is formed into a concave surface that is concave in the proximal-distal direction, and the gentle downward slope from the ridgeline to the distal side is formed into a nearly flat plane in the proximal-distal direction or a concave surface that is concave in the proximal-distal direction.

[0014] The insole described in claim 4 is the insole described in claim 3, characterized in that it includes narrow, low, mountain range-like protrusions formed in a lattice pattern over any area of ​​the entire surface.

[0015] The insole according to claim 5 is the insole according to claim 1 or 2, wherein the planar MTP joint support surfaceThe present invention is characterized by the provision of a plurality of through holes provided on the plane anterior to the phalangeal elevation portion, which are connected to a downward opening groove formed on the rear surface, and a plurality of through holes provided on the plane anterior to the phalangeal elevation portion, which are connected to a downward opening groove formed on the rear surface.

[0016] The insole according to claim 6 is the insole according to claim 3, wherein the MTP joint support is planar. surface The present invention is characterized by the provision of a plurality of through holes provided on the plane anterior to the phalangeal elevation portion, which are connected to a downward opening groove formed on the rear surface, and a plurality of through holes provided on the plane anterior to the phalangeal elevation portion, which are connected to a downward opening groove formed on the rear surface.

[0017] The footwear described in claim 7 is characterized in that the insole described in claim 3 is covered with fabric and sewn in a non-removable state.

[0018] The footwear described in claim 8 is characterized in that it is integrally molded with the insole described in claim 3, which has the phalangeal elevator portion formed to protrude upward from the surface. [Effects of the Invention]

[0019] The insole and footwear of the present invention prevent tension in the medial longitudinal arch due to collapse in the pronation direction and inhibit the descent of the medial arch of the foot including the medial longitudinal arch by the medial arch support slope portion, prevent collapse of the lateral longitudinal arch due to collapse in the supination direction by the lateral arch support slope portion and inhibit the descent of the medial and lateral arches of the foot including the lateral longitudinal arch, the phalangeal lift portion is supported by a mountain range-like portion that forms a gentle downward slope, so that the lift is not localized but is widely distributed, providing an anti-slip effect, and the central arch lift portion is supported by the medial longitudinal arch It provides strong support for the medial arch of the foot including the medial longitudinal arch, and also provides supplementary support for the medial and lateral arches of the foot including the lateral longitudinal arch and the transverse arch, and also supports the arch structure near the calcaneus joint, contributing to preventing the collapse of the entire arch structure and maintaining the skeletal arrangement of each arch in a normal state, and can also correct it to a normal state.The heel cup, which can be fitted into the heel, stabilizes the calcaneus and prevents excessive movement in the left and right directions and in the pronation and supination directions, making it easier to align the bones, stabilizing the entire longitudinal arch and having an anti-slip effect.

[0020] In addition, the narrow, low mountain-like protrusions formed in a grid pattern can increase friction across the entire sole of the foot. This has the effect of preventing the symptoms of hallux valgus and flat feet from worsening due to foot slippage. In particular, the provision of a flat MTP joint support surface at the location of the MTP joint can increase the anti-slip effect of the phalangeal elevation portion.

[0021] In addition, the slip prevention effect prevents athletes' feet from slipping when they stop, and prevents feet from slipping when walking downhill. Furthermore, because the feet are less likely to slip, people with hallux valgus are less likely to have their big toe pressed inward by their shoes, which reduces pain and slows the progression of deformation, and people with flat feet are less likely to have their soles twisted, which slows the progression of symptoms.

[0022] Furthermore, the multiple through holes that are connected to the grooves that are open downward and are provided on the back side form a cavity when the insole is set in the shoe, and the air in the cavity can be let in and out through the through holes, preventing the feet from getting stuffy, preventing foot sweat from accumulating on the soles of the feet as the sweat flows into the cavity, preventing the feet from slipping forward due to a decrease in the grip of the soles, and preventing the feet from getting sweaty and causing odors and skin diseases, thereby achieving the effect of allowing the insole to be used for long periods of time.

[0023] The phalangeal elevation portion forms a mountain-like portion that forms a gentle downward slope from the distal ends of the first to fifth proximal phalanges as a ridgeline toward the proximal ends of the first to fifth proximal phalanges and the distal ends of the first to fifth distal phalanges. Flexor muscles such as the brevis tendon and flexor pollicis longus tendon run through the toes, but as people age, the flexor muscles atrophy and become less flexible, making it difficult for them to stretch when the toes are bent, lifted, or pressed down for long periods of time, resulting in pain and discomfort, making it difficult to wear the shoes for long periods of time. However, the present invention forms a mountain-like portion that forms a gentle downward slope, which has the effect of allowing elderly people to wear the shoes for long periods of time without feeling pain or discomfort.

[0024] Furthermore, the height of the ridge of the mountain range-like portion of the toe bone elevation part is higher at both ends in the medial and lateral directions and lowered by a concave central portion, so that the arch structure of the transverse arch can be supported in a natural way, which is effective in preventing hallux valgus and flat feet and alleviating their symptoms.

[0025] The toe elevators are formed as a concave surface, where the gentle downward slope from the ridgeline of the mountain range proximal to the foot is concave in the proximal-distal direction, or as a nearly flat surface or a concave surface where the gentle downward slope from the ridgeline distal to the foot is concave in the proximal-distal direction, so that the toes can be supported in a natural manner by conforming to the shape of a gently convex surface that bulges slightly downward below the underside of the toes. This prevents flat feet caused by weakened plantar muscles and prevents the symptoms from worsening, makes it easier to guide the big toe into an appropriate position, prevents hallux valgus and prevents the symptoms from worsening, and improves balance while standing and walking by improving the toe's ground contact sensation and support in the elderly.

[0026] Furthermore, when the distal ends of the first to fifth proximal phalanges are pushed up transversely by the ridges and the phalangeal elevator parts, which have the effect of preventing displacement of the first to fifth MTP joints, are made to protrude downward from the back surface, the raised parts of the phalangeal elevator parts are easy to trim, which has the effect of allowing the height to be adjusted to suit the wearer.

[0027] Furthermore, people with hallux valgus or flat feet tend to have poor posture and tire easily, but by wearing the insoles or footwear of the present invention, they can improve their standing posture and absorb shock to the ankles and knees, enabling them to walk stably. This stable walking allows them to walk or exercise for long periods of time, which has the effect of increasing the amount of activity in daily life and promoting metabolism. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 1 is an explanatory diagram of Example 1 of an insole for a right foot according to the present invention, in which a phalangeal elevation portion is provided on the back surface. [Figure 2] FIG. 10 is an explanatory diagram of Example 2 of an insole for a right foot according to the present invention, in which a phalangeal elevation portion is provided on the back surface. [Figure 3] FIG. 10 is an explanatory diagram of a plan view of a form in which the narrow, low mountain-like protrusions of the lattice pattern of Example 1 are omitted and a toe bone elevator portion is provided on the back surface. [Figure 4] FIG. 4 is an explanatory diagram of the insole of FIG. 3 as seen from the bottom. [Figure 5]FIG. 5 is a cross-sectional explanatory view taken along the line MM in FIG. 4. [Figure 6] FIG. 2 is an explanatory diagram of a plan view of the skeleton of the right foot. [Figure 7] FIG. 2 is an explanatory diagram of a side view of a foot. [Figure 8] FIG. 1 is an explanatory diagram of a plan view of the joints of the right foot. DETAILED DESCRIPTION OF THE INVENTION

[0029] The insole 1 or footwear (not shown) of the present invention is intended for use by a wide range of wearers, from young people who play sports to the elderly, who wish to prevent or slow the progression of hallux valgus or flat feet. It also reduces fatigue and increases the amount of exercise, building muscle mass, improving metabolism, and making it suitable for use by those who wish to diet healthily. Wearing the insole 1 or footwear of the present invention from a young age allows for more vigorous exercise in youth and also serves as a measure against frailty and locomotor syndrome in elderly people. Examples of such footwear include slippers, slippers, and canvas shoes.

[0030] Elderly people wear slippers or room shoes for long periods of time at home, but because their muscles have atrophied with age, applying pressure to a specific area for a long period of time or pressing in the opposite direction to the bending direction of a joint for a long period of time can cause pain or make it difficult to bend the joint freely.

[0031] As shown in FIGS. 1 to 5, the insole 1 of the present invention includes a medial arch support slope 2 that elastically supports the medial longitudinal arch to inhibit descent of the medial arch of the foot and inhibit pronation of the ankle joint, a lateral arch support slope 3 that elastically supports the lateral longitudinal arch to inhibit descent of the lateral arch of the foot and inhibit supination of the ankle joint, a central arch lifting portion 4 that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi brevis covering the plantar sides of the third metatarsal 14c and the fourth metatarsal 14d from near the rear of the MTP joint 20 to near the Chopart joint 21, and a central arch lifting portion 5 that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi covering the plantar sides of the third metatarsal 14c and the fourth metatarsal 14d from near the rear of the MTP joint 20 to near the Chopart joint 21, and a central arch lifting portion 6 that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi covering the plantar sides of the third metatarsal 14c and the fourth metatarsal 14d from near the rear of the MTP joint 20 to near the Chopart joint 21, and a central arch lifting portion 7 that elastically presses and supports from the plantar side the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi covering the plantar sides of the third metatarsal 14c and the fourth metatarsal 14d from near the rear of the MTP joint 20 to near the Chopart joint 21, and a central arch lifting portion and a metatarsal elevator part (5) formed by protruding downward from the back surface or protruding upward from the front surface, a mountain range-like part that forms a gentle downward slope toward the end of the metatarsal arch and the distal ends of the first to fifth distal phalanges (11a to 11e); an MTP joint support surface (6) that supports the first to fifth metatarsal joints (20a to 20e) on a flat surface provided between the central arch elevator part (4) and the metatarsal elevator part (5); and a heel cup (7) that forms peripheral wall surfaces of the heel fat pad (42) on the left, right, and rear sides so as to encase the heel (41), and the front peripheral wall surface that connects to the surface of the central arch elevator part (4) forms a gently sloping surface and has a substantially circular, flat bottom surface into which the heel (41) can be fitted.

[0032] Furthermore, in the insole 1 of the present invention, the gentle downward slope of the mountain-like portion of the phalangeal elevator portion 5 forms a concave surface. The gentle downward slope refers to two slopes on the distal and proximal sides of the ridge of the mountain-like portion.

[0033] As shown in FIG. 1 or 2, the insole 1 of the present invention has narrow, low mountain range-like protrusions 9 formed in a lattice pattern over any region of the entire surface.

[0034] As shown in FIGS. 3 to 5, the insole 1 of the present invention is a flat insole for supporting the MTP joint. surface 6, a plurality of through holes 8 are provided in the plane anterior to the phalangeal elevation portion 5, which are connected to the downward opening groove 30 formed on the back surface, and a plurality of through holes 8 are provided in the plane anterior to the phalangeal elevation portion 5, which are connected to the downward opening groove 30 formed on the back surface.

[0035] The material of the insole 1 may be any material that can elastically support the area that comes into contact with the sole of the foot without compressing the bones and muscles of the foot, such as EVA foam, polyurethane foam, rubber such as natural rubber or foam rubber, silicone gel, thermoplastic resin, etc.

[0036] Therefore, the material of the insole 1 is made of a material capable of elastically supporting the foot in the area that comes into contact with the sole of the person's foot. When the insole 1 has only one layer as shown in Fig. 1, the material is capable of elastically supporting the foot, and when the insole 1 has two layers as shown in Fig. 2, for example, the layer on the surface side that comes into contact with the sole of the person's foot is made of a material capable of elastically supporting the foot, and the layer on the back side that does not come into contact with the sole of the person's foot may be made of a hard synthetic resin, for example, or any other material.

[0037] First, we will explain the medial arch support slope portion 2. The medial arch support slope portion 2 elastically supports the medial longitudinal arch to inhibit descent of the medial arch of the foot and inhibit pronation of the ankle joint. The range of the medial arch support slope portion 2 may be any range that inhibits descent of the medial arch of the foot and inhibits pronation of the ankle joint, and for example, a preferable range is from the rear end of the ball of the big toe to the rear end of the navicular bone 16.

[0038] As shown in Figure 6, the medial longitudinal arch is an arch composed of the calcaneus 19, talus 18, navicular 16, medial cuneiform 15a, and first metatarsal 14a. The ball of the foot corresponds to the head of the first metatarsal, which is the distal end of the first metatarsal 14a, and the highest point is the head of the talus. The medial arch of the foot generally refers to the arch related to the medial side of the foot, including the medial longitudinal arch, ligaments, muscles, and plantar aponeurosis. Therefore, the medial arch support slope 2 elastically supports the medial arch of the foot from the anterior end of the medial longitudinal arch, including the head of the talus, which is the highest point, to the posterior end of the navicular 16, which constitutes the Chopart joint 21.

[0039] Since the medial arch of the foot is elastically supported without compressing it, it promotes stabilization of the medial arch of the foot, including the medial longitudinal arch, which has an elastic structure, and eliminates the risk of inflammation or overtension of muscles such as the plantar fascia.

[0040] Therefore, the medial arch support slope portion 2 suppresses the pronation of the medial longitudinal arch, in other words, prevents the ankle joint from collapsing due to the suppression of pronation, and elastically supports the pushing up of the medial arch of the foot, so that the medial longitudinal arch can be prevented from pronating or lowering, making it less likely for the foot to become flat, and furthermore, by preventing the talus 18 from being adduced and internally rotated and preventing the first metatarsal 14a from deviating inward, the worsening of hallux valgus can be suppressed.

[0041] Next, we will explain the lateral arch support slope portion 3. The lateral arch support slope portion 3 elastically supports the lateral longitudinal arch to inhibit descent of the lateral arch of the foot and inhibit supination of the ankle joint. The range of the lateral arch support slope portion 3 may be any range that inhibits descent of the lateral arch of the foot and inhibits supination of the ankle joint, and for example, a preferable range is from the rear end of the little toe ball to the rear end of the cuboid bone 17.

[0042] As shown in Figure 6, the lateral longitudinal arch is an arch formed by the calcaneus 19, cuboid 17, and fifth metatarsal 14e, and the lesser toe ball corresponds to the head of the fifth metatarsal, which is the distal end of the fifth metatarsal 14e, and the highest part is the cuboid 17. The lateral arch of the foot refers to the arch related to the outside of the foot in general, including the lateral longitudinal arch, ligaments, muscles, and plantar aponeurosis. Therefore, the lateral arch support slope 3 elastically supports the lateral arch of the foot from the rear end of the highest cuboid 17 to near the proximal end of the fifth metatarsal 14e.

[0043] Since the lateral arch of the foot is elastically supported without compressing it, it promotes stabilization of the low, slightly flat, and gently arched lateral longitudinal arch, and has the effect of eliminating the risk of causing pain to the foot 40 and inflammation or overtension of muscles such as the plantar fascia.

[0044] Therefore, the lateral arch support slope 3 prevents the lateral longitudinal arch from supinating, in other words, prevents the ankle joint from collapsing due to pronation, and elastically supports the lifting of the lateral arch of the foot, preventing the lateral longitudinal arch from supinating or lowering, thereby strengthening the stability of the lateral longitudinal arch. This has the effect of preventing flatfoot and preventing the worsening of flatfoot symptoms, and preventing hallux valgus and preventing the worsening of hallux valgus symptoms.

[0045] Next, we will explain the central arch lifting part 4. As shown in Figures 6 and 8, the central arch lifting part 4 elastically presses and supports the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi brevis muscle covering the plantar sides of the third metatarsal bone 14c and fourth metatarsal bone 14d from the vicinity behind the MTP joint 20 to the vicinity behind the Chopart joint 21, from the plantar side.

[0046] The plantar fascia is a thick, tough muscle located near the skin on the bottom of the foot 40, starting from the calcaneus 19 and spreading out in a fan shape toward the distal ends of the metatarsals. The flexor digitorum brevis is a muscle located in the deep layer of the plantar fascia, extending from the inside of the calcaneus 19 to the second to fifth middle phalanges 12b to 12e, and has the function of flexing the PIP joints 22 of the second to fifth toes. The flexor digitorum brevis is a muscle located from the cuboid bone 17 to the proximal end of the fifth metatarsal 14e, and has the function of flexing the MTP joint 20 of the fifth toe.

[0047] If the medial longitudinal arch and the lateral longitudinal arch are only partially supported, when the overall tension of the plantar fascia connecting the medial longitudinal arch and the lateral longitudinal arch is relaxed, the medial longitudinal arch is likely to sink, making the foot more likely to become flat, and the lateral longitudinal arch may sink slightly, indirectly adversely affecting hallux valgus and flat feet. Therefore, in addition to supporting the medial arch of the foot including the medial longitudinal arch and the lateral arch of the foot including the lateral longitudinal arch, muscles such as the plantar fascia in the central region are also supported.

[0048] The central arch lifting part 4 elastically supports the plantar fascia without compressing it, so as to prevent excessive tension on the plantar fascia and pain in the foot 40. The central arch lifting part 4 strongly supports the medial arch of the foot including the medial longitudinal arch, and also provides supplementary support to the medial and lateral arches of the foot including the lateral longitudinal arch and the transverse arch, and also supports the arch structure near the rib joint 23, contributing to preventing collapse of the entire arch structure and enabling the skeletal arrangement of each arch to be maintained and corrected to a normal state.

[0049] Next, we will explain the phalangeal elevator portion 5. As shown in Figures 1, 2, 4, and 6, the phalangeal elevator portion 5 has a mountain range-like shape that forms a gentle downward slope with the distal ends of the first to fifth proximal phalanges 13a to 13e as a ridgeline toward the proximal ends of the first to fifth proximal phalanges 13a to 13e and the distal ends of the first to fifth distal phalanges 11a to 11e, protruding downward from the back surface or protruding upward from the front surface.

[0050] It has a mountain range shape with the distal ends of the first to fifth proximal phalanges 13a to 13e as its ridgeline, and the base of the mountain range extends to the proximal ends of the first to fifth proximal phalanges 13a to 13e on the proximal side and to the distal ends of the first to fifth distal phalanges 11a to 11e on the distal side.The height of the ridgeline of the mountain range-shaped portion is 1 to 4 mm, and the cross-sectional shape of the tip of the ridgeline is rounded rather than pointed.

[0051] The height of the ridge of the mountain range-like portion of the phalangeal elevation portion is high at both ends in the medial and lateral directions and is low in the central portion by being recessed.

[0052] In addition, the gentle downward slope from the ridgeline of the mountain-like portion of the phalangeal elevation portion 5 on the proximal side is formed into a concave surface that is concave in the proximal-distal direction, and the gentle downward slope from the ridgeline on the distal side is formed into a nearly flat plane or a concave surface that is concave in the proximal-distal direction.

[0053] The gentle downward slope is such that the gentle downward slope on the distal side is an approximately flat plane or a concave surface recessed in the proximal-distal direction, and the gentle downward slope on the proximal side is a concave surface recessed in the proximal-distal direction, so that it can conform to the shape of the underside of the toe 31 in its natural, unloaded state, as indicated by arrow N. Because the material is elastic, it does not apply pressure to the phalanges 10 and elastically supports the phalanges 10.

[0054] The phalangeal elevator portions 5 may be configured to protrude downward from the rear surface of the insole 1, as shown in Figures 1, 2, and 4, or, although not shown, to protrude upward from the surface of the insole 1. In the case of the configuration in which the phalangeal elevator portions 5 protrude downward from the rear surface of the insole 1, when the insole 1 is inserted into footwear and worn, the shape protruding upward from the surface of the insole 1 is formed as a protrusion, so that the configuration in which the phalangeal elevator portions 5 protrude downward from the rear surface of the insole 1 and the configuration in which the phalangeal elevator portions 5 protrude upward from the surface of the insole 1 can achieve the same effect.

[0055] The phalangeal elevator 5, together with the heel cup 7 and the narrow, low mountain-like protrusions 9 formed in a grid pattern, can prevent the foot 40 from slipping, thereby preventing the arch of the foot from collapsing due to slipping.

[0056] Next, we will explain the MTP joint support surface 6. As shown in Figures 1, 2, 3, and 6, the MTP joint support surface 6 supports the first to fifth MTP joints 20 on a plane provided between the central arch elevation portion 4 and the phalangeal elevation portion 5.

[0057] By supporting the first to fifth MTP joints 20 evenly on the plane, a stable range of motion is maintained without the first to fifth MTP joints 20 being overextended or overflexed, and the entire toes 31 can be used to firmly push against the ground or floor surface.

[0058] Next, we will explain the heel cup 7. As shown in Figures 1, 2, 3, and 7, the heel cup 7 forms peripheral wall surfaces of the left, right, and rear heel fat pads 42 so as to encase the heel 41, and the front peripheral wall surface that connects to the surface of the central arch lifting portion 4 forms a gently sloping surface, forming a roughly circular, flat bottom surface into which the heel 41 can be fitted.

[0059] Since the heel cup 7 encases the heel 41, the calcaneus 19, which is the origin of the medial longitudinal arch and the lateral longitudinal arch, is stabilized, thereby stabilizing the medial arch of the foot including the medial longitudinal arch and the lateral arch of the foot including the lateral longitudinal arch, and since the plantar fascia is less likely to be unnecessarily stretched, the support of the medial arch of the foot including the medial longitudinal arch and the lateral arch of the foot including the lateral longitudinal arch by the plantar fascia can be strengthened. In addition, the front side of the heel cup 7 has a gently sloping upward slope, which prevents the foot 40 from slipping forward.

[0060] Next, the narrow, low mountain-like ridges 9 will be described. As shown in Figures 1 and 2, the narrow, low mountain-like ridges 9 are formed in a lattice pattern over any desired area of ​​the entire surface. The desired area may be the entire surface of the insole 1, or the entire area excluding only the approximately circular bottom surface of the heel cup 7, as long as it is determined that a sliding effect can be obtained based on the height and spacing of the ridges 9. The height of the ridges 9 is 0.5 to 2 mm, the lattice spacing of the ridges 9 is 4 to 10 mm, and the tips of the ridges 9 are rounded.

[0061] The narrow, low mountain-like protrusion 9, together with the phalangeal elevator 5 and the heel cup 7, can prevent the foot 40 from slipping, allowing the functions of the medial arch support slope 2, the lateral arch support slope 4, and the central arch elevator 4 to be constantly performed.

[0062] Therefore, the anti-slip effect of the insole 1 of the present invention, or of footwear equipped with the insole 1, on the foot 40 is effectively exerted, first, by the narrow, low mountain-like protrusion 9, second, by the heat cup 7 which encases the heel 41 and has a gently sloping upward slope on the front side, and further, third, by the upward slope proximal to the ridge of the phalangeal elevation part 5 distal to the flat MTP joint support surface 6.

[0063] Next, a description will be given of the through-hole 8. As shown in Figs. 3 to 5, the through-hole 8 is formed in the MTP joint support portion 100 by a planar shape. surface 6, which is connected to a downward opening groove 30 formed on the back surface, and is also connected to a downward opening groove 30 formed on the back surface, which is provided on a plane anterior to the phalangeal elevation portion 5.

[0064] The downward opening groove 30 is connected to the plurality of through-holes 8, which allows air to flow easily due to the pumping action caused by walking, preventing stuffiness and improving comfort. This prevents the foot 40 from slipping due to a decrease in grip strength of the sole, and prevents the foot from getting stuffy, causing odors and skin diseases.

[0065] From the above, the configuration of the insole 1 can be a configuration in which one or more of the following are selected and combined: Configuration A, which is basic and includes the medial arch support slope portion 2, the lateral arch support slope portion 3, the central arch elevator portion 4, the phalangeal elevator portion 5, the MTP joint support surface 6, and the heel cup 7; Configuration B, in which the mountain-like ridge of the phalangeal elevator portion 5 is concave in the medial-lateral direction; Configuration C, in which the gentle slope of the phalangeal elevator portion 5 forms a nearly flat plane or a concave surface distal to the ridge in the proximal-distal direction, or a concave surface that is concave in the proximal-distal direction, and a concave surface that is concave in the proximal-distal direction proximal to the ridge; Configuration D, in which the narrow and low mountain-like ridge portion 9; and Configuration E, in which the through-hole 8 communicates with the downward opening groove 30.

[0066] Therefore, the configuration of the insole 1 may include a configuration of only the configuration A, a configuration of A and B, a configuration of A and C, a configuration of A, B and C, a configuration of A, B and D, a configuration of A, C and D, a configuration of A, B, C and D, a configuration of A and D, a configuration of A and E, a configuration of A, B, C, D and E, a configuration of A, B, C and E, a configuration of A, B and E, a configuration of A, C and E, etc.

[0067] Next, footwear (not shown) in which the insole 1 is covered with fabric and sewn in a non-removable state will be described. In the footwear, the insole 1, which has the medial arch support slope portion 2, the lateral arch support slope portion 3, the central arch elevator portion 4, the phalangeal elevator portion 5, the MTP joint support surface 6, and the heel cup 7, is covered with fabric and sewn in a non-removable state. This eliminates the need for a wearer to take the insole 1 in and out, and has the effect of preventing slippage between the footwear and the insole 1.

[0068] The shape of the metatarsal elevation portion 5 of the insole 1, which is covered with fabric and sewn to the footwear in a non-removable manner, can have the configuration C, or a shape having both the configuration B and the configuration C.

[0069] In addition, the insole 1, which is covered with fabric and sewn to the footwear in an irremovable state, has the narrow, low mountain-like protrusions 9 formed in a lattice pattern over any area of ​​the entire surface, and / or the flat MTP joint support. surface 6, which are provided with a plurality of through holes 8 communicating with a downward opening groove 30 formed on the back surface, and a plurality of through holes 8 provided on a plane anterior to the phalangeal elevation portion 5, which are provided with a plurality of through holes 8 communicating with a downward opening groove 30 formed on the back surface.

[0070] Next, we will explain footwear (not shown) in which the insole 1 is integrally molded with the insole 1, and the phalangeal elevator portion 5 is formed by protruding upward from the surface. The footwear is integrally molded with the insole 1, which has the medial arch support slope portion 2, the lateral arch support slope portion 3, the central arch elevator portion 4, the phalangeal elevator portion 5, the MTP joint support surface 6, and the heel cup 7. This has the effect of eliminating the need for a wearer wearing the footwear to take the insole 1 in and out.

[0071] The shape of the toe bone elevator portion 5 of the footwear integrally molded with the insole 1 may have the configuration C or may have both the configuration B and the configuration C.

[0072] The insole 1, which is molded integrally with the footwear, may be provided with the protrusions 9, which are formed in a lattice pattern over any area of ​​the entire surface, in the shape of a narrow, low mountain range. [Explanation of symbols]

[0073] 1 insole 2. Inner arch support slope 3. Outer arch support slope 4 Central arch lift 5. Elevator of the phalanges 6 MTP joint bearing surface 7 Heel Cup 8 through holes 9 Projection part 10 phalanges 11 Distal phalanx 12 Middle phalanx 13 Proximal phalanx 14 Metatarsal 15 Cuneiform bone 16 Scaphoid 17 cubic bones 18 Talus 19 Calcaneus 20 MTP joint 21 Chopard Joint 22 PIP joint 23 Squirrel Line Joint 30 Downward opening groove 31 Toes 40 feet 41 Heel 42 Heel fat pad

Claims

1. a medial arch support slope that elastically supports the medial arch to inhibit descent of the medial arch of the foot and inhibit pronation of the ankle joint; An outer arch support slope that elastically supports the outer arch to inhibit descent of the outer arch of the foot and inhibit eversion of the ankle joint; a central arch lifting part that elastically presses and supports the flexor digitorum brevis, plantar aponeurosis, and flexor digitorum minimi brevis muscle covering the plantar side of the third and fourth metatarsal bones from the vicinity of the posterior MTP joint to the vicinity of the Chopart joint from the plantar side; a phalangeal elevator portion formed by protruding downward from the back surface or protruding upward from the front surface, the mountain range-like portion forming a gentle downward slope from the distal ends of the first to fifth proximal phalanges toward the proximal ends of the first to fifth proximal phalanges and the distal ends of the first to fifth distal phalanges as a ridge line; An MTP joint support surface that supports the first to fifth MTP joints on a plane provided between the central arch elevation portion and the phalangeal elevation portion; The insole is characterized by comprising: a heel cup having peripheral wall surfaces on the left, right, and rear heel fat pads that encase the heel, and a front peripheral wall surface that connects to the surface of the central arch elevation portion that forms a gently sloping surface, and a heel cup that has a substantially circular, flat bottom surface into which the heel can be fitted.

2. 2. The insole according to claim 1, wherein the height of the ridge of the mountain range-like portion of the phalangeal elevation portion is higher at both ends in the medial-lateral direction and lowered by being concave in the center.

3. The insole according to claim 1 or 2, characterized in that the gentle downward slope from the ridgeline of the mountain-like portion of the phalangeal elevation part to the proximal side is formed into a concave surface that is concave in the proximal-distal direction, and the gentle downward slope from the ridgeline to the distal side is formed into a nearly flat plane or a concave surface that is concave in the proximal-distal direction.

4. 4. The insole according to claim 3, further comprising: narrow, low mountain range-like protrusions formed in a lattice pattern over any area of ​​the entire surface.

5. The insole according to claim 1 or 2, characterized in that it has a plurality of through holes provided on the planar MTP joint support surface that are connected to downward opening grooves formed on the back surface, and a plurality of through holes provided on a plane anterior to the phalangeal elevation portion that are connected to downward opening grooves formed on the back surface.

6. The insole described in claim 3, characterized in that it has a plurality of through holes provided on the planar MTP joint support surface that are connected to downward opening grooves formed on the back surface, and a plurality of through holes provided on a plane anterior to the phalangeal elevation portion that are connected to downward opening grooves formed on the back surface.

7. Footwear, wherein the insole according to claim 3 is covered with fabric and sewn in a non-removable manner.

8. Footwear characterized in that it is integrally molded with the insole according to claim 3, wherein the toe bone elevation portion is formed to protrude upward from the surface.

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