US20120174436A1 - Insole - Google Patents

Abstract

The insole (1) from the upper side provided with shaping corresponding to the form of impression of bottom part of a human foot sole with recess (5) for the big toe joint with smooth toe section (10), and from the bottom side with shaping corresponding to the bottom part of a human foot sole with smooth toe section (10), while it in a flexible manner supports all parts of the foot sole between the toe section (10) and the heel section (1000). In the heel section (1000) there is performed recess (1201) or depression (120), in which the heel recession (12) is performed.

Description

TECHNICAL FIELD
• The invention relates to an inserting insole from the upper side provided with shaping corresponding to the form of impression of bottom part of a human foot sole with smooth toe section, and from the bottom side with shaping corresponding to bottom part of a human foot sole with smooth toe section.
• The invention also relates to a stretching insole from the upper side provided with shaping corresponding to the form of impression of bottom part of a human foot sole with smooth toe section.
BACKGROUND ART
• At present, several different types of inserting or stretching insoles are used, which should in a most comfortable and suitable manner act upon the human foot, to render it the most ideal support, and in some cases also to stimulate some of the ceptors being in the foot sole.
• The solution according to DE 3406504 belongs to representatives of this group, where the insole besides others comprises a layer formed by a cork pulp with a soft binding, which during wearing adjusts to the form of a bottom section of user's foot. Also JP 2001299408 deals with a similar solution, where one of the insole layers is made of cork, which after a longer wearing adjusts to the form of bottom surface of the human sole. Nevertheless both these solutions have their disadvantages when to the most substantial belongs the fact that if the user has a foot which is unsuitably shaped, e.g. the flat-foot, or he treads fully on one's foot in an unsuitable manner etc., the insole shapes itself so that at a further wearing it impairs this defect instead to eliminate it, or at least not to support this defect, and so to improve the quality of user's tread.
• Another way how to adjust the insole to the form of a human foot is to create a relief on an upper surface of the insole which is in contact with a human foot, at the same time this relief by its form and arrangement rather corresponds to the form of the sole. The solution according to GB 1491489 or according to JP 7039402 belongs among such solutions, when a surface of the insole is shaped by means of a system of protrusions and dimples. The disadvantage of such solutions is that these insoles are shaped in accordance with a unified form of human foot, hence disregarding an individual shaping, which features especially in a diversity of forms and inclination of toes so that in this case the toes of a foot adjust to the structure of the insole while it should happen, in fact, vice versa. Usage of such insoles is therefore not suitable, moreover not comfortable.
• The structure of insoles of both described types results in that during their usage—during walking, but also during sporting all the muscles of lower limbs are not engaged ideally, neither the weight of a human body is not distributed ideally between the big toe joint, little toe joint and the heel bone. Weight of the body at these embodiments on each leg is distributed into three supports, among the big toe joint, little toe joint and the heel bone, as represented in the Fig. A by means of crosses. In the points of supports of the foot sole created on the insole the foot sole is supported in a fixed manner. Due to this even at a healthy man with normally shaped foot this leads to an excessive loading of some muscles or ligaments of a foot sole, thus to atrophy and shortening of other not used muscles, to an excessive loading of the big toe joint, and in some cases also to an injury of vascular system in a transversal and longitudinal instep of the bottom sole of a foot, the result of which is not only an abnormal tiredness, but also further physical, possibly even psychic problems, that become worse with the age.
• These disadvantages are remedied by the insole according to the CZ patent 298894, or according to analogical application of European patent EP 07466013.5, which from the upper side is provided with shaping corresponding to the shape of impression of bottom part of a human foot with recess for the toe joint and with a smooth toe section and from the lower side with shaping corresponding to a shape of bottom part of a human foot sole with smooth toe section. This shaping ensures to the user a correct full tread and simultaneously natural engagement of all muscles and ligaments of foot sole, and implicitly also of the whole lower limb, without excessive loading of bones of the foot sole, its blood system or in it positioned nerves, as the body weight during walking is spread into seven supports, which consist of the toe and all fingers, of the outside lateral section of the foot sole and the heel as it is represented in the Fig. B by means of crosses. The planar toe section at the same time accommodates to individual shaping and sloping of toes, which further considerably increases the quality and comfort of walking. Nevertheless it appears recently, that this insole is advantageous first of all at the user's motion, when the foot sole us dynamically loaded by the weight of a human body—during walking, running or sporting. Its positive effects vice versa partially or totally disappear in cases when the foot sole is loaded statically, thus especially in situations, when the user stands or sits for a longer periods, possibly when he changes periods of sitting or standing with shorter periods of walking, etc. This is typical first of all for sedentary occupations, especially for officials, professional drivers, but also for handicapped people, possibly for standing attendants of various devices, etc. At this static loading there is a different load of the foot sole and its sections when compared with situation with dynamic loading during walking or running, at the same time the Achilles tendon and to it connected peroneuses are released, and on the contrary against it positioned muscles and ligaments of the foot sole are extremely loaded and indirectly also the front tibialis muscle, etc. Hence, during sitting the insole according to the CZ patent 298894 behaves in the same or similar manner as the other to date known insoles and the effects which are acting during walking are not effective in this case.
• All the time a greater portion of population suffers ankle offset, problems with knees, hips and similar which are healed operatively. The offset of ankle at children causes walking disability when the child is confined to a wheelchair.
• The goal of the invention is to reduce or totally remedy the shortcomings of the background art and to create a suitable insole destined for situations, when the user's foot sole is loaded statically only for a longer time. At the same time the requirement is that this insole does not support an offset of ankle, possibly at least its partial elimination.
PRINCIPLE OF THE INVENTION
• The goal of the invention has been achieved by the insole according to the invention whose principle consists in that in the heel section of the insole the recess or reduction is performed in which the heel bone depression is created.
• Thanks to this the user's heel is positioned under the level of other parts of the foot sole, and so at static loading it is partially stretched which causes loading of Achilles tendon and of other to it related muscles and ligaments, and on the contrary reduction in loading of against it arranged muscles and ligaments of the foot sole. Thanks to this all muscles and ligaments involved are loaded naturally and uniformly, so that the foot sole and ankle and implicitly also the knee are maintained in a natural position without any offset, possibly they through effect of forces between the said muscles and ligaments action in vertical direction.
• Further features of the invention are obvious from the dependent claims.
DESCRIPTION OF THE DRAWING
• Example of embodiment of the insole according to the invention is schematically represented in the enclosed drawings where
• FIG. 1A shows a view to the upper side of insole provided with depression in the heel section,
• FIG. 1B a view to upper side of insole provided with recess in the heel section in the place and vicinity of the heel recession,
• FIG. 2 cross-section II-II of the insole according toFIG. 1,
• FIG. 3 cross-section III-III through the insole according toFIG. 1,
• FIG. 4 cross-section IV-IV through the insole according toFIG. 1,
• FIG. 5A cross-section V-V through the insole according toFIG. 1A,
• FIG. 5B cross-section V-V through the insole according toFIG. 1 B,
• FIG. 6A cross-section VI-VI through the insole according toFIG. 1A,
• FIG. 6B cross-section VI-VI through the insole according toFIG. 1B,
• FIG. 7A cross-section VII-VII through the insole according toFIG. 1A,
• FIG. 7B cross-section VII-VII through the insole according toFIG. 1B.
• The drawings A and B represent a layout of supports of the foot sole at the insoles according to the background art, Fig. A is a common insole, Fig. B is the insole according to CZ 298894.
EXAMPLES OF EMBODIMENT
• Execution of the insole will be described on example of embodiment of the independent inserting insole, nevertheless the principle of the invention may fully be applicable also at reconstruction of stretching insoles, possibly also other shoemaker's products.
• Theinsole1 in its ground plan represented in theFIG. 1 by its shape and size is similar to the shape and size of a human foot sole, it comprises thetoe section10, which in the represented variant is planar and smooth both from the upper as well as bottom side. The toe section of the insole continues to form themiddle section100, which further continues to form theheel section1000 of theinsole1. Thetoe section10 of theinsole1 provides support for toes of the foot sole. Themiddle section100 of theinsole1 provides a flexible support both for transversal as well as longitudinal instep of the foot sole, for joints of individual toes and for other parts of the foot sole, and the heel section of the insole provides support to the heel.
• As it is obvious fromFIGS. 2 to 8, theinsole1 in the represented example of embodiment consists of four layers, while the most important is the carryinglayer2, which is formed of a pressed cork, and in which the shaping of theinsole1 is performed. The carryinglayer2 in the represented embodiment from the bottom side is strengthened with alayer21 of textile, which is bonded to it. On upper side of thecarrying layer2 there is positioned thedilatation layer3 made of flexible, easy deformable material, which is further covered with coveringlayer4. Thecovering layer4 forms the full-tread section of theinsole1, which is in contact with the foot sole, and preferably it is made e.g. of genuine leather or other similar material, which is pleasant to touch, and which simultaneously is able to drain away humidity into other sections of the insole and/or footwear, etc. Thedilatation layer3 may also be formed of fibrous formation of carbon filaments or such formation may be inserted as another layer into the insole.
• Through recess in thecarrying layer2 on theupper side11 of themiddle section100 of theinsole1 there is performedrecession5 of big toe joint, whose positioning and shape correspond to positioning and shape of a big toe joint of human foot sole. Therecession5 of the big toe joint at the same time merges via theelastic support56 of the transversal instep into therecession6 of little toe joints, whose positioning and shape correspond to positioning and shape of joints of other toes of a human foot sole, so that it features approximately a kidney-like shape. Therecession6 of little toe joints may in further not represented examples of embodiment be replaced by several recessions, being shaped individually for each joint of other toes of a human foot sole or e.g. for couples of these joints, etc. Due to the arrangement of the big toe joint and joints of other toes on bottom surface of a human foot sole, therecession5 of the big toe joint is positioned with respect to the tip of theinsole1 higher than therecession6 of little toe joints, and it is deeper. Greater depth of therecession5 of big toe joint is mostly created by incurvation of thecarrying layer4, which in further examples of embodiment may be added by a hole performed indilatation layer3 of theinsole1 in a place of therecession5 of big toe joint or by means of a change in thickness ofdilatation layer3 or by means of another suitable manner.
• Bottom portion of therecession5 of big toe joint, inner edge of therecession6 of the little toe joints and between them createdsupport56 of transversal instep merge continually into thesupport7 of longitudinal instep, which is formed by a convex deflection of a corresponding section of carryinglayer2 of theinsole1. Shape and dimensions of thesupport7 of longitudinal instep are selected taking into account the longitudinal instep of a human foot sole.
• Therecession6 of little toe joints further in its bottom section via theelastic support68 of splint bone created by a continuous heightening of the common edge merges into therecession8 of splint bone, whose size and shape are derived from the size and shape of the longitudinal splint bone of a human foot sole. Therecession8 of splint bone is formed of a concave deflection of a corresponding section of thecarrying layer2 and it is arranged along thesupport7 of longitudinal instep, into which along its length it continuously merges. In its bottom section therecession8 of longitudinal splint bone in direction externally theinsole1 merges into theprotrusion9 of the support of cuboid bone.
• Due to the fact that the carryinglayer2 of theinsole1 in the toe as well as middle section of insole is of a constant thickness, the bottom side110 of theinsole1 is shaped negatively with respect to itsupper side11. The bottom side110 of the insole represented in theFIG. 2 thus comprises the planar toe section11010, to which the middle section110100 merges, in which under therecession5 of big toe joint of theupper side11 of theinsole1 theprotrusion51 of the big toe joint is performed, under theprotrusion56 of the support of transversal instep thedeflection561 of the support of transversal instep is performed, and under therecession6 of little toe joints theprotrusion61 of little toe joints is performed. Theprotrusion61 of little toe joints is usually lower than theprotrusion51 of big toe joint. Under theprotrusion68 of the support of splint bone there is further performed deflection681 of splint bone, under therecession8 of longitudinal splint bone there is performeddeflection81 of longitudinal splint bone, under theprotrusion7 of the support of transversal instep there is performeddeflection71 of the support of transversal instep, under theprotrusion9 of the support of cuboid bone there is performed deflection91 of the support of cuboid bone.
• Onupper side11 of theheel section1000 of theinsole1 there is further performed by means of a concave deflection of thecarrying layer4 theheel recession12 under which on the bottom side of theinsole1 theheel protrusion121 is performed.
• The thickness of theinsole1 moreover in the area of theheel section1000 in direction from the upper side of theinsole1 is lowered with respect to other sections of theinsole1, especially towards therecession8 of splint bone and thesupport7 of transversal instep. As it is apparent fromFIG. 6,reduction120 in thickness of theinsole1 in the represented example of embodiment is achieved by reducing the thickness of thecarrying layer2. Nevertheless this may in another not represented examples of embodiments be replaced or added through reducing the thickness of thedilatation layer3 and/orcovering layer4 in theheel area1000 of theinsole1, possibly through creation of a hole in some of them or through omitting some of the layers in this section of theinsole1. In example of embodiment according toFIG. 1A thickness of theinsole1 is reduced along the whole width of theheel section1000 and theheel recession12 is created in this reduced heel section.
• At embodiment according to theFIG. 1B in theheel section1000 of theinsole1 therecess121 is created in the place of theheel recession12, while in the top view therecess1201 is greater than the size of theheel recession12, which is performed inside of thisrecess1201.
• At the same time it is preferred if the transitions between theheel recession12, thedepression120 orrecess1201 and the adjacent sections of theinsole1 are smooth.
• The size of thedepression120 or therecess1201 of theheel section1000 of the insole varies from 1 to 8 mm, while the optimum effects are achieved in the range from 2 to 5 mm.
• On the bottom side of theinsole1 there is preserved the required height of theheel protrusion121 towards further sections of theinsole1, and this serves together with theprotrusion51 of the big toe joint and theprotrusion61 of the little toe joints as one of the main supports of the insole.
• On condition a horizontal underlay is available, the user's heel is positioned lower than other parts of the foot sole, through which at immobility of the foot sole e.g. during sitting or standing a permanent stretching and loading of Achilles tendon occurs, and also of other muscles, which directly or indirectly relate to it. These are especially the peroneuses, the surae triceps, and the inner as well as outer flexors. At the same time the loading of muscles and ligaments arranged against the Achilles tendon is reduced, especially of the deep protractors of the leg and toes (extensors) and of the front tibialis muscle. Thanks to this the foot sole and ankle are fixed in an axial position, when their loading is evenly and naturally distributed between the corresponding muscles and ligaments. Thanks to this there is no wilful either unconscious correction of their position which is usual upon usage of common shoemaker's products, which leads even to permanent off-axis positioning of heel and/or ankle in outwards direction or to other important changes in structure of the lower limb, that are accompanied by a physical pain, lowered concentration ability and other symptoms reducing the quality of life. A suitable distribution of loading in area of the foot sole and ankle causes a similar effect also in the area of the knee, where again occurs a partial release of to date extremely stressed muscles and ligaments, and on the contrary loading of those so far not loaded or those loaded insufficiently and unevenly. Theinsole1 according to the invention thanks to its effect is suitable for application in situations, when the foot sole is mostly loaded in static manner, thus when the user is sitting or standing for a longer periods, possibly when he changes sitting and/or standing with shorter intervals of walking or other motion. At the same time it is preferred if thisinsole1 is inserted freely or in a removable manner in the footwear, thus it is exchangeable with other types of insoles, e.g. with the insole according to the CZ patent 298894, or according to the analogic application of European patent EP 07466013.5, which shows similar wholesome effects on the foot sole and the whole lower limb during motion and upon the dynamic loading.
• In another not represented example of embodiment lessening in thickness of theinsole1 in area of theheel recession12 has been achieved by omitting thecarrying layer4, possibly by removing a whole heel section of theinsole1, when the support for heel is created by an outsole or a stretching insole. The heel of the user is then lowered towards other sections of its foot sole just by the thickness of theinsole1.
• The above mentioned wholesome effect of theinsole1 according to the invention is further enhanced in embodiment represented inFIG. 7, when on the bottom side of thetoe section11 of theinsole1, in the area of support for toes of the foot sole thetoe support99 is arranged, which in correspondence with the preceding example of embodiment further enhances loading of Achilles tendon and the to it directly or indirectly connected muscles and ligaments. At the same time it is preferred if the toe support on the bottom side of the insole is arranged in a removable manner, which enables its replacement in case it is worn, possibly replacement for toe support from another material and/or of another dimensions, thus also with other degree of effect.
• In another not represented examples of embodiment the toe support creates an integral part of theinsole1, when it is e.g. formed of an increment in material on thecarrying layer4, through its bending or by means of another suitable manner.
• Whatever embodiment of the insole according to the invention may further be supplemented by appropriate number of next suitable layers, among others e.g. by an absorbing layer, whose task is to lead off and/or deposit the moisture, or a biologically active layer eliminating occurrence and vegetation of micro-organisms in structure of theinsole1, creation of odours, etc.

Claims (10)

1. An insole comprising a carrying layer and on it positioned dilatation layer, which is on the upper side provided with shaping corresponding to the form of impression of bottom part of a human foot sole with planar and smooth toe section, which continues to from a middle section of the insole with a recession of big toe joint, at least one recession of little toe joints, a support of transversal instep, a support of longitudinal instep, a support of splint bone, a recession of splint bone and a protrusion of a support of cuboid bone, which continues to form a heel section of the insole with heel recession, and which is on its bottom side provided with shaping corresponding to the bottom part of a human foot sole with planar and smooth toe section, which continues to form a middle section with a protrusion of the big toe joint, at least one protrusion of little toe joints, a deflection of the support of transversal instep, a deflection of the support of longitudinal instep, a deflection of splint bone, a deflection of longitudinal splint bone and a deflection of the support of cuboid bone, which continues to form a heel section of the insole with heel protrusion, wherein at least part of the heel section of the insole with the heel recession is on the upper side of the insole lowered with respect to the middle section of the insole.

2. The insole according to theclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole along its whole width.

3. The insole according to theclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole in vicinity of the heel recession.

4. The insole according toclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole by means of shaping the carrying layer.

5. The insole according toclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole by changing the thickness of the carrying layer.

6. The insole according toclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole by omitting the dilatation layer.

7. The insole according toclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole along the whole length of the heel recession.

8. The insole according toclaim 1, wherein the heel section of the insole is lowered with respect to the middle section of the insole by 1 mm to 8 mm.

9. The insole according toclaim 1, wherein on the bottom side of the toe section of the insole there is arranged the toe support.

10. The insole according toclaim 9, wherein the toe support is removable.

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