FR3046349A1 - INTERNAL SHOE INSOLES OR ORTHOPEDIC INSOLES OF REDUCED DIMENSIONS - Google Patents

Abstract

Shoe insoles, or orthopedic insoles, to compensate for Greek and Egyptian type feet to relieve the metatarsalgia that may result. Insoles of small size, modular, removable, self-adhesive, movable, positionable directly in the shoe and variable thickness. They consist of elements, for example in the case of a Greek-type foot, the element (1) of FIG. 4, having the effect of compensating for the lack of length of the first metatarsal head in order to reduce the pressure under the neighboring metatarsal heads. Various elements may be added to this element, such as for example (2) of FIG. 4, to increase the action if the footwear is sufficient. This invention is particularly indicated in footwear with low footwear and / or high heel.

Description

The present invention relates to insoles of footwear or orthopedic soles characterized in that they are of reduced size, modular, self-adhesive, movable, can be of variable thickness, directly positionable in the shoe, intended to compensate for the differences in length of the metatarsals in cases of Greek or Egyptian type foot and to prevent or relieve the metatarsalgia that can result while having a reduced footprint. They may also act, for some elements on the round toe, the hallux valgus and the hallux rigidus.

Orthopedic insoles are traditionally made from a support, called base, starting from the back of the shoe and stopping at half,% or the front end of the shoe. This base therefore occupies a certain volume in the shoe to maintain in position elements of corrections, compensations or stimulations.

The currently existing devices in the trade, to relieve metatarsalgia, do not take into account the Greek and Egyptian morphologies of the majority of the feet in that they have the same thickness under all the forefoot or, when they are of sizes reduced, are not intended to compensate for differences in the lengths of the metatarsal heads.

It is known from the state of the art a device which has been the subject of a patent application US6277088 (Bl). This device has disadvantages, a limited action at the 2nd metatarsal only, a fixed thickness, a lack of modularity and a size that can be further reduced.

The present invention aims to overcome these disadvantages, and proposes a method of acting on the feet while taking the least possible space in the shoe. To do this, the components of the sole will be placed directly in the shoe, and no longer on a base, which will save space by removing the base. The interest for users, will be to be able to keep their shoes without having to change to fit more voluminous soles. This concept is therefore particularly suitable for footwear with low footwear. The elements will be movable to change shoes or adjust the position according to the feeling of each. They will be held in position thanks to the use of a non-permanent or repositionable glue. Users will be able to position them in the shoe where they want and change shoes if they wish. Another advantage over conventional orthopedic insoles is that I can use my invention on one side, without necessarily using a pair, which saves materials and glues, thus reducing waste and pollution, since only one side and reduced size can be used. This one-sided use is possible since no base under the heel is used so there is no change in leg length to compulsorily compensate by an opposite sole.

Consequently, in the case of Greek-type foot, where the 1st metatarsal is shorter than the 2nd, a large part of the weight of the body is supported by the 2nd and 3rd metatarsal heads during the digitigrade phase of the step, or even the plantigrade phase with high heels. Outside, the 2nd and 3rd metatarsal heads are not adapted to receive this increase in weight which often causes pain called metatarsalgia. The action of the present invention will therefore compensate for the difference in length of the metatarsals by restoring support to the first metatarsal head. To do this, a wedge (1), traditionally called "sub capital support", will be placed under the first metatarsal head. Its action will consist in increasing the support under this head which will reduce the pressure supported by the neighboring heads. What makes this wedge special is that it is no longer fixed on a base but installed directly in the shoe which reduces its size to the bare necessities. The interest is to avoid the superfluous volume of a conventional orthopedic insole while allowing to position the element optimally. Indeed, any increase in the tightening in a shoe results in a loss of effectiveness of the elements of orthopedic insoles.

This element will be flat above and below and with laterally inclined edges. Its shape will follow the outline of the head of the 1st metatarsal, projecting slightly forward and backward. Its size may vary to suit the sizes. Its thickness can vary between 0.5mm and 4mm. Its hardness must be equal to or greater than shore 25. To this shim may be added a cushioning surface under the other metatarsal heads and / or a retro capital support or a capital retro bar, to improve efficiency, if the footwear volume allows it. The damping surface will have a thickness of between 0.5 and 4 mm and a shore hardness equal to or greater than 5.

In the case of metatarsalgia of the 1st metatarsal, or Egyptian foot, a wedge (4), traditionally called "sub capital support", will be placed under the 2nd, 3rd, 4th and 5th metatarsal heads to give them more support. This element will be flat above and below and with laterally inclined edges. Its thickness can vary between 0.5mm and 4mm. Its hardness must be equal to or greater than shore 10. To this shim can be added, if the footwear volume is sufficient, a cushioning surface under the metatarsal head and / or a capital retro bar behind all the metatarsal heads.

The present invention is also characterized by the fact of being able, possibly, to modify the thickness, and therefore its action, through the use of removable shims glued below.

Finally, these elements may be delivered with a plan to facilitate positioning in the shoe and or a removable template (Fig. 24, 25, 26, 27 and 28) having the shape of a shoe insole cut according to the outline of the element to indicate the location.

Descriptions of the various elements: The invention relates to a device making it possible to compensate for the differences in the length of the metatarsals in the case of a Greek or Egyptian type foot in order to relieve the metatarsalgia that results from it comprising a sole of reduced size, characterized in that sole is made of removable modular elements, provided on their lower face with a repositionable adhesive intended to be fixed directly in the shoe.

The device makes it possible to compensate for the lack of length and support of the first metatarsal head, particularly in the case of a Greek foot, and is characterized in that the sole comprises an element (1) intended to be placed under the first metatarsal head. which has a top and bottom view of an oval shape at the anterior and posterior ends rounded almost hemispherically, said element being flat in profile and front view above and below with all its edges inclined downwards, said element (1) having a symmetrical shape, said element (1) having a thickness of between 0.5 and 4 mm and a Shore hardness greater than or equal to 25.

The device is characterized in that the sole further comprises an element (2) traditionally called "retro capital support" intended to be positioned just behind the 2nd, 3rd and 4th metatarsal heads, ovoid shape seen from above and having a profile. aircraft wing and front view, said element being convex upwards, having a shore hardness greater than or equal to 10 and being of symmetrical shape.

The device is characterized in that the element (1) is joined an element called "retro capital support" so as to form a single element (8) to be placed behind the 2nd, 3rd and 4th metatarsal heads and having a view from above or below an ovoid shape and viewed from the sides an airfoil profile, said element having a thickness of less than or equal to 8 mm in its thickest part and a Shore hardness greater than or equal to 15.

The device is characterized in that the sole further comprises a damping element (3) intended to be placed under the 2nd, 3rd, 4th and 5th metatarsal heads, said element being flat above and below and having a superior hardness shore or equal to 5 but less than that of the element (1) located under the first metatarsal head, its thickness varying between 0.5 mm and 4 mm.

The device is characterized in that the element (1) and the damping element are fused to form one (9).

The device makes it possible to compensate for the difference in length of the metatarsals in the case of Egyptian-type foot in order to relieve the metatarsalgia of the 1st metatarsal that result therefrom characterized in that the sole comprises an element (4) intended to be placed under the 2nd, 3rd, 4th and 5th metatarsal heads said element being flat above and below and with edges laterally inclined downwards and its thickness varying between 0.5 and 4mm its hardness being equal to or greater than shore 10.

The device further comprises a damping element (5) intended to be placed under the first metatarsal head having in view from above or below an oval shape at the anterior and posterior ends rounded almost hemispherically and seen in profile and face, said element being flat above and below with all its edges inclined downwards and having a thickness of between 0.5 and 4 mm and a shore hardness lower than that of the element (4) and greater than or equal to shore 5.

The device is characterized in that the sole further comprises an element (6) intended to be positioned behind all metatarsal heads traditionally called "capital retro bar" having an airfoil profile, a thickness of 8mm maximum and superior in its internal part relative to the external and a hardness shore greater than or equal to 10.

The device is characterized in that removable wedges (7) can be placed under the elements to modify the thickness of said wedges being held in place by a so-called "non-permanent" glue that will remove them and replace their thicknesses being between 0.4 and 2mm.

Descriptions of the figures:

For reasons of simplification, the figures presented below show the elements under a right foot, those for the left foot being deduced by symmetry.

Fig 1, 4, 7, 10, 14, 17, 21: bottom views of a right foot with the different elements in their position

Fig 2, 5,11,18: views of the internal side of a right foot and elements

Fig 3, 6, 9, 13, 16, 20, 23: front views symbolizing the right forefoot and the elements in positions

Fig 8,12,15,19, 22: views of elements on the external side of a right foot

Fig. 8 perspective view of the element (9)

Fig 24, 25, 26, 27, 28: bottom views of the different jigs to position the soles in the shoes

Fig 29: example of a removable wedge (7) placed under a sub capital support of the 1st metatarsal (1)

With reference to these drawings, one of the devices (8), illustrated in FIGS. 4, 5 and 6, consists of an element (1) placed under the first metatarsal head. This element acts to increase the support under this head. This increase of support is indicated in the case where the 1st metatarsal is shorter than the 2nd like in a foot of Greek type for example. By adding a wedge under the first metatarsal head, the difference in length between the 1st and 2nd head is compensated, especially in the digitigrade phase of the step or in the plantigrade phase when the shoes have a high heel. This wedge will have an oval shape. Its inner limit will follow the outline of the shoe. Its outer limit will be between the 1st and the 2nd metatarsal head. Said shim will be of quasi-hemispherical shape in its anterior part. Its posterior part will merge with a second element (2), called retro capital support. This retro capital support has for action to support the 2nd, 3rd and 4th metatarsal heads by taking support just behind them. This element will have an ovoid shape, viewed from above, with a plane wing profile. Front view it will be convex upwards. Its thickness will be less than or equal to 8mm in its thickest part. Its shore hardness will be equal to or greater than 10. The 2 elements will be fixed to each other to form the element (8). A system of removable wedges fig.29 (7) can be installed under the elements to vary the thickness and therefore the action. Finally this element thus formed will be fixed in the shoe through the use of a non-permanent glue or repositionable. This repositionable glue will move this element in the shoe to refine its position depending on the user's feeling or change shoe. In conclusion, we will have elements of orthopedic insoles, minimal space, allowing use in narrow footwear where it was difficult, until now, to accommodate traditional orthopedic insoles.

These elements are intended to be placed in shoes to prevent or relieve various foot pain while taking up the least space possible.

Claims (10)

1. Device for compensating for differences in the length of the metatarsals in the case of foot type Greek or Egyptian to relieve the resulting metatarsalgia comprising a sole of reduced size, characterized in that the sole consists of removable modular elements , provided on their underside with a repositionable adhesive to be fixed directly in the shoe. 2 Device according to claim 1 for compensating for the lack of length and support of the first metatarsal head, particularly in the case of foot type Greek characterized in that the sole comprises an element (1) to be placed under the lere metatarsal head which has a top and bottom view of an oval shape at the anterior and posterior ends rounded almost hemispherically, said element being flat in profile and face view above and below with all its edges inclined downwards, said element (1) having a symmetrical shape, said element (1) having a thickness of between 0.5 and 4 mm and a shore hardness greater than or equal to 25. 3 Device according to claim 2 characterized in that the sole further comprises an element (2) traditionally referred to as "retro capital support" intended to be positioned just behind the 2nd, 3rd and 4th metatarsal heads, ovoid shape seen from above and having an airfoil profile and front view, said element being convex upwards, having a shore hardness greater than or equal to 10 and being symmetrical in shape. 4 Device according to claim 2 characterized in that the element (1) is joined an element called "retro capital support" so as to form a single element (8) to be placed behind the 2nd, 3rd and 4th metatarsal heads and having a view from above or below an ovoid shape and viewed from the sides an airfoil profile, said element having a thickness of less than or equal to 8 mm in its thickest part and a shore hardness greater than or equal to at 15. 5 Device according to any one of claims 2 to 6 characterized in that the sole further comprises a damping element (3) intended to be placed under the 2nd, 3rd, 4th and 5th metatarsal heads said element being flat above and below and having a Shore hardness greater than or equal to 5 but less than that of the element (1) located under the first metatarsal head, its thickness varying between 0.5 mm and 4 mm. 6 Device according to claims 1 and 5 characterized in that the element (1) and the damping element are merged to form more than one (9). 7 Device according to claim 1 for compensating for the difference in length of the metatarsals in the case of foot type Egyptian to relieve the metatarsalgia of the 1st metatarsal result thereof characterized in that the sole comprises an element (4) to be placed under the 2nd, 3rd, 4th and 5th metatarsal heads, said element being flat above and below and with edges laterally inclined downwards and its thickness varying between 0.5 and 4 mm, its hardness being equal to or greater than shore 10 . 8 Apparatus according to claim 7 characterized in that it further comprises a damping element (5) intended to be placed under the metatarsal head head having in view from above or below an oval shape at the anterior and posterior ends rounded almost hemispherically and viewed in profile and in front of said element being flat above and below with all its edges inclined downwards and having a thickness of between 0.5 and 4 mm and a shore hardness less than that of the element (4 ) and greater than or equal to shore 5. 9 Device according to claim 7 characterized in that the sole further comprises an element (6) intended to be positioned behind all metatarsal heads traditionally called "retro capital bar" having an airfoil profile, a thickness of 8mm maximum and upper in its internal part with respect to the external one and a hardness shore greater than or equal to 10. 10 Apparatus according to any one of the preceding claims, characterized in that removable wedges (7) can be placed under the elements to modify the thickness said wedges being held in place by a glue called "non-permanent" which will allow remove them and replace their thicknesses between 0.4 and 2mm.