ES2945438T3 - Template - Google Patents

Abstract

Insole (1) for footwear, which has a base body (2) consisting of a heel area (3), a metatarsal area (4) and a toe area (5), in which the base body ( 1) has a clip (13) that extends from the heel area (3) extends at least to the metatarsal area (4) and in the heel area (3) has a recess (14) for the heel bone heel of a user, wherein the clip (13) has at least a first notch (15) extending from the recess (14) in the heel area (3) extending towards the metatarsal area (4), and the base body (2) in the area of the metatarsal (4) is essentially flattened in the longitudinal direction (L), so that the lower heel of the heel and the tendon plate of the sole of a user's foot remain essentially pressure-free . (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Template

The present invention relates to an insole, in particular for footwear, according to the preamble of claim 1.

Insoles of this type, preferably also called foot insoles or shoe insoles, are used in particular for medical and therapeutic purposes. However, they are also used in the sports sector, in particular when the user's feet are exposed to high loads. The aim is that, for example, incorrect positions are corrected or avoided, certain areas of the feet are supported and/or unloaded in order to achieve an even distribution of pressure and/or shock absorption is provided to ultimately avoid pressure peaks.

A large number of insoles are known from the state of the art, in particular for footwear. Among other things, embodiments are known that consist of an insole adapted to the shape of the foot and a clip, preferably made of carbon fiber reinforced plastic, preferably attached below. Insoles are normally composed of one or more "padding" elements, preferably assembled in layers, which are preferably equipped with various functional elements such as pads. The insole has a geometry that supports the arch of the foot due to the attached clip and due to the preferential thermal deformation of both components. With such an insole it is therefore possible to support the arch of the foot, in particular to erect a flattened longitudinal arch of the foot, and thus to correct the position of the foot. This is achieved in particular by the preferably individual adjustment of the insoles in a metatarsal area to the anatomy of the longitudinal arch of the foot of a wearer. In addition to the supporting function, the clip has the advantage that, due to the elasticity of the clip, which deforms or bends when walking, in addition to a largely unrestricted freedom of movement, there is also a targeted activation of the musculature. This is because the clip has inherent resiliency.

Such an insole with a clip is known, for example, from EP 1625803 A1.

This well-known foot insole consists of a spatially deformed stabilization plate made of dimensionally stable plastic with high bending rigidity, which supports at least the metatarsal of a user. To do this, the foot insole has a convex curvature, viewed from the top of the sole and in the longitudinal direction of the sole, at least in the metatarsal area to adapt to the anatomy of the longitudinal arch of a user and therefore therefore, to form a supporting function. In addition to correcting a flattened longitudinal arch of the foot, the insole is mainly used for therapeutic purposes. To this end, the insole has a plurality of corrective and stimulating elements which are arranged on the underside of the stabilizing plate and which are elastically resilient in shape. This triggers the so-called proprioceptive reflexes and thus the human body, in particular the musculature, is specifically trained in its statics and dynamics.

The execution of the insoles known from this state of the art has proven to be disadvantageous, although the insole, in particular the clip, is designed in such a way that the latter has a circular recess for the user's calcaneus in the clip in one area where significantly more pressure is exerted on a user's foot, and preferably has a heel padding pad, which does not take into account that the clip continues to exert pressure on the area of the lower calcaneal spur and fixation of the tendon plate on the user's heel bone.

A particular disadvantage of the known embodiment is that due to the circular recess for the heel bone in the clip, especially in the area of the lower calcaneal spur and the fixation of the tendon plate, the clip forms a hard edge, which it can cause particularly great pain, especially in the case of plantar fasciitis. Plantar fasciitis is inflammation of the tendon plate on the bottom of the foot and is usually triggered by excessive stress. This affects the fixation of the tendon plate in the calcaneus. Due to the hard edge of the clip, a particularly high pressure is exerted on the tendon plate of the sole of the foot and/or the heel spur when the user exerts a load.

Another drawback of the insole known from the state of the art is the adaptation of the insole, in particular its metatarsal area, to the longitudinal arch of a user's foot, especially when the user has flat feet and at the same time suffers from plantar fasciitis. , that is, an inflammation of the tendon plate. Due to the elevation of the longitudinal arch of the foot, in particular due to the convex design of the metatarsal area of the insole walking surface, a lot of pressure is exerted on the tendon plate, which is very painful for the user with fasciitis. plantar and with permanent irritation leads to further deterioration with the risk of a chronic evolution.

From WO 2008/037977 A2, a special insole for high-heeled shoes is also known. This consists of a first padding element for the front part of the sole region of a wearer's foot, as well as a second padding element, which extends from the heel region to the first padding element. This second padding element is a gel-filled cushion, which in turn has a cutout with a elongated notch for receiving a fastening element. This fixing element placed in the cutout is fixed to the inner face of the sole of the shoe, thereby achieving a better hold of the insole in the shoe.

This type of insole or inlay pad is only used to cushion the sole of a shoe. This is not for any medical or therapeutic purpose. For example, bad foot positions are not corrected or avoided, nor are certain areas of the feet supported or relieved.

From US 6,038,793 a partial insole is known which, in addition to a metatarsal pad, has a heel cup. The metatarsal pad itself in this case has a domed shape. The surface in this case curves convexly upwards, as a result of which pressure is exerted on a tendon plate of a user. On the other hand, as in the first-mentioned document, the heel cup has a recess for the heel area. An arcuate recess then extends from this recess towards the metatarsal area and then towards the side of the heel cup, thus separating the heel area of the heel cup from the metatarsal area. The consequence of this is that the lateral arm of the heel cup formed by the cutout and the recess in the heel and metatarsal area can be moved outward, so that the insole can be individually adapted to the heel or shoe of a user in the heel area.

A drawback of the design of the insole known from this state of the art is that the heel cup continues to exert pressure in the area of the lower calcaneal spur and the attachment of the tendon plate, since the heel cup also forms an edge in this area. hard and continuous over long stretches in the recess for the heel bone.

From US 2018/0140040 A1 a jig with a clip is also known. The insole is designed in the metatarsal area in such a way that its surface forms a curved longitudinal or transverse arch support. The clip used also has a recess that extends to the metatarsal area. The recess serves to accommodate a heel cup. This extends to the metatarsal area.

A similar structure, as described above, is also known from EP 3 158 886 A1. In addition to a base body, this template features a template core. In order to relieve the tendon plate, the core of the insole arranged in the base body, that is to say on its inside, has a first recess. This notch is continuously extended into a second notch, which also extends in the metatarsal area to relieve the tendon plate.

The disadvantage of the known jig designs from the two aforementioned documents is that due to such a design of the clip, in particular the cutout for the area of the lower calcaneal spur and the fixing of the tendon plate, in order to If increased pressure is not exerted there, any type of support by the clip in the transition zone towards the metatarsal is renounced.

Therefore, the present invention has the mission of creating an insole for footwear that avoids the disadvantages of the prior art and that, in particular, supports, unloads and/or cushions the sole of a user's foot through a preferably adapted geometry. to the shape of the foot, in particular to achieve even pressure distribution, while at the same time relieving and supporting the lower heel bone and subsequent tendon plate, namely the plantar fascia.

According to an exemplary embodiment, the shoe insole has a base body consisting of a heel area, a metatarsal area and a toe area, the base body having a clip extending from the area of the heel at least as far as the metatarsal region and in the heel region has a recess for the heel bone of a wearer, the clip having at least two notches extending from the recess in the heel region to the heel region of the metatarsal to form at least a first tongue and the base body in the metatarsal area is essentially flattened in the longitudinal direction, so that the lower heel spur and the tendon plate of the insole of a wearer remain essentially free of pressure. On the upper side of the insole, that is to say the side facing the sole of a user's foot, it preferably has a geometry adapted to the shape of the foot.

Particularly preferably there are three notches, so that at least two tongues are thereby formed. This prevents a hard edge in the clip recess, particularly in the area of the lower tendon plate of the user.

According to a second exemplary embodiment, the base body of the insole can have a heel pad and/or a tendon pad, the pad overlapping the recess and/or the at least two notches and/or the clip in the metatarsal area. . Preferably, the heel and tendon pad preferably overlaps the recess, at least the two notches and the clip in one region of the metatarsal.

According to a third exemplary embodiment, the base body has a pad in the metatarsal area for raising the transverse arch of a user's foot. For this, the pad, ie the pressure body, is preferably integrated into the base body and preferably has a geometry in the form of a spherical cap. The convex shape in the transverse direction with respect to the insole allows to straighten or at least support the arch of the foot in the transverse direction.

According to another exemplary embodiment, the base body of the insole has at least one narrowing in the metatarsal area. In addition, the base body forms a lateral shell in the heel and/or metatarsal area, preferably concavely curved on the inside. In the region of the narrowing of the base body, the inner face of the shell of the base body is preferably convexly curved for medial support of the longitudinal arch of the foot of a wearer.

In addition, the clip arranged on the base body preferably extends into the laterally configured cover, in particular in the convex curved region.

According to another exemplary embodiment, the base body of the template and/or the clip has a support body in the convexly curved area that can be attached releasably or non-releasably. This can preferably be releasably positioned on the clip or on the base body itself by means of Velcro fastening elements. This makes it possible to further stabilize the medial support of the longitudinal arch of a user's foot.

According to another exemplary embodiment, the clip arranged on the base body, which preferably has a high bending rigidity, is preferably made of a fiber-reinforced plastic, in particular carbon-fiber reinforced. This makes it possible to achieve a very high dimensional stability in the case of the lowest possible overall height. The thickness or thickness of the clip is preferably between 0.4 and 1.2 mm, particularly preferably 0.6 mm.

In order to increase the elasticity of the insole, the clip preferably has at least one second notch in the area of the cover, in particular in the convexly curved area. Preferably there are several second notches which extend laterally transversely to the longitudinal direction of the template from the outside towards the clip. These one or more second notches, as well as the at least one first notch, are preferably wedge-shaped. In this case, the pointed end of the wedge-shaped notches is preferably in the shape of a circular hole so that a sharp edge is not formed, in order to avoid a possible nominal breaking point of the clip when the closure is subjected to to tension, that is to say bending of the clip.

According to another exemplary embodiment, the base body of the jig has a cutout on the outside for receiving the clip, so that the outside face of the clip is essentially flush with the outside face of the base body. It is also conceivable that the outer face of the clip is set back in the cutout with respect to the outer face of the base body. This guarantees a particularly compact and very flat template design. In addition, the arrangement of the clip on the outer face of the base body makes it possible to mount the tabs formed by the notches in the region of the lower tendon plate so that they are supported freely for movement, especially towards the outside, when the clip is subjected to to a load and, consequently, when the clip is bent. Due to this freely movable support of the tongues, a particularly high elasticity of the insole is achieved in the area of the tendon plate, so that stress is particularly well relieved in this area.

According to another exemplary embodiment, the base body is multilayered, preferably with a first and a second filler layer as well as a cover layer. In addition, an additional reinforcing layer is particularly preferably present in the heel region and/or metatarsal region, preferably with a recess for the heel and/or tendon pad.

According to an exemplary embodiment of a method for producing the jig according to the invention, (1) a clip, preferably made of fiber-reinforced plastic, in particular carbon-fiber reinforced, with a base body that is larger than the clip, preferably contains several functional elements and the clip is completely covered at the top, glued to form a raw sole, (2) deep-drawn for permanent deformation of the insole clip, as well as (3) ) is processed, removing material from the surface of the base body depending on the geometric information of the sole of a user's foot measured with a measuring device.

The template is characterized by a number of considerable advantages.

By means of the at least two notches in the insole clip, which extend from the recess in the heel area to the metatarsal area, and the tabs in the clip that are preferably formed as a result, a hard edge is avoided. in the cutout of the clip. for the calcaneus, particularly in the area of the lower tendon plate of a user. Rather, a smooth transition is formed between a first area of the insole, for example filled with soft foam, namely the heel area, and a second area that supports the user's foot by means of a clip preferably made of a fiber composite material. This ensures that the clip does not exert pressure on the inferior tendon plate.

Furthermore, by configuring the insole, in particular its base body in the metatarsal area, in such a way that it is substantially flattened in the longitudinal direction, it is ensured that the lower calcaneal spur of the heel and the tendon plate of the sole of a wearer remain essentially free of pressure. Therefore, the base body preferably has a so-called tendon geometry in the metatarsal area, which clearly differs from the geometry adapted to a longitudinal arch of the foot, i.e. a convex configuration in the metatarsal area, in the direction of that this area is flattened.

The inventive construction of the insole, in particular the combination consisting of a flattened metatarsal area as well as the at least two notches in the clip, has the advantage that the lower tendon plate, especially in the area of the heel spur lower, is clearly relieved.

It is particularly advantageous if the base body additionally has a side cover, the inner face of which is preferably convexly curved in a median area of the metatarsus. In this way, the foot of a user, in particular the longitudinal arch, is supported medially. The preferably convex-shaped area of the cover exerts lateral and oblique pressure on the user's foot below the tibial posterior without restricting the freedom of the plantar fascia. The insole according to the invention allows it maximum freedom.

Another advantage of the invention is provided by the arrangement of the clip on the outside of the template, preferably in a recess in the base body of the template. In this way, the clip is mounted flush on the one hand and thus saves space on the base body, on the other hand, the tabs formed by the notches in the area of the lower tendon plate are movably supported, especially outwards when the clip is subjected to a load and consequently when bent. Due to this movable support of the tongues, a particularly high degree of shape flexibility of the insole is achieved in the area of the tendon plate, so that stress is particularly well relieved in this area. In addition, this ensures a particularly flat design of the insole. In addition to the special geometric configuration of the base body and the insole clip in the metatarsal area, the provision of a heel pad and/or tendon in the heel and metatarsal area is particularly advantageous. A heel and tendon pad preferably overlaps the recess for a calcaneus, the at least two notches and the clip in one region of the metatarsal. This achieves a particularly good relief of the lower tendon plate.

The invention will be explained in the following with the aid of various exemplary embodiments and in conjunction with the accompanying drawings.

Show:

Figure 1, an embodiment example of the insole according to the invention, in particular an embodiment for a user's left foot, in a three-dimensional view,

Figure 2, the template of Figure 1 from above, that is to say, in plan view, with the clip arranged under its base body, which is marked with a dashed line,

Figure 3, the insole of Figures 1 and 2 in an exploded view, in which the various components of the exemplary embodiment of the insole according to the invention are shown individually.

In Figure 1 an embodiment example of the insole 1 for the left foot of a user is shown in a three-dimensional view. The insole 1 extends in the longitudinal direction L and the transverse direction Q, relative to a user's foot, and comprises a substantially flat base body 2 which, in addition to a heel area 3 and a metatarsal area 4, presents a zone 5 of the toes for supporting and/or relieving the foot of a user. In particular, by means of the insole 1 an even distribution of pressure is achieved over the entire foot area. The essentially flat base body 2 forms a lateral shell 22 in the heel area and preferably in the metatarsal area 3, 4. This shell is preferably concavely curved on its inside 23 so that the shell 22 adapts to the outer face of a user's foot. The concave curvature 24 extends in particular in the area 3 of the heel. For medial support of the longitudinal arch of a user's foot, the inner face 23 of the cover 22 of the base body 1 also has a convexly curved section 25 .

A clip 13 is arranged on the underside or outer face 6 of the base body 2. This preferably extends into the laterally configured cover 22, in particular into the convexly curved region 25 . In this exemplary embodiment, the clip 13 is preferably made of a fiber-reinforced plastic, in particular carbon fiber-reinforced. In particular, this allows the clip 13 to have a very small overall height, namely a thickness of preferably 0.5 to 1.2 mm, particularly preferably 0.8 mm. In order to position or fix the clip 13 to the base body 2 in the most compact way possible, the base body 2 has a recess 7 on the outer face 6 for the accommodation of the clip 13, so that the outer face 17 of the clip 13 is essentially flush with the outer face 6 of the base body 2.

Figure 2 shows the template 1 of Figure 1 from above, ie in plan view. The clip 13 arranged below on the base body 2 is shown in the form of dashes. The base body 2 itself preferably has a narrowing 20, 21 in the metatarsal region 4 at least on one side, preferably on both sides, so that the base body 2 preferably corresponds to the shape of a user's foot. The clip 13 extends from zone 3 of the heel to zone 4 of the metatarsal and has a recess 14 in zone 3 of the heel for the a user's calcaneus. It is of course also conceivable that the clip 13 extends as far as the toe area 5 of the insole 1. In addition, the clip 13 comprises at least two first notches 15 which extend from the recess 14 in the heel area 3 to zone 4 of the metatarsal 4.

As shown in this exemplary embodiment, the clip 13 preferably has three of these first notches 15, so that at least two tabs 27, 28 are thereby formed. This prevents a hard edge in the recess 15 of the clip 13, particularly in the region of the user's lower tendon plate. In addition, the base body 2 is preferably substantially flattened in the metatarsal area 4 in the longitudinal direction L, so that the lower heel spur and the tendon plate of the sole of the user's foot, in particular in combination with the at least one first notch 15 in the clip 13, to form the tabs 27, 28 remains essentially pressure-free as described above.

In addition to the first notches 15, the clip 13 preferably has other second notches 16, of which at least one notch 16 is preferably arranged in the convexly curved area 25 of the side cover, as described in Figure 1, in particular to increase the elasticity of the insole 1. As can be seen in Figure 2, in the clip 13 preferably several second notches 16 are present, which preferably extend laterally transversely to the longitudinal direction of the insole 1 from the outside towards the clip 13. These one or more second notches 16 as well as the at least two or more first notches 15 are preferably wedge-shaped. In this case, the pointed end of the wedge-shaped notches 15, 16 is preferably designed in the form of a circular bore so that no sharp edge is formed, in order to avoid a possible nominal breaking point when bending. clip 13.

In FIG. 3, the insole 1 of FIGS. 1 and 2 is now shown in an exploded view, in which the various components of the exemplary embodiment of the insole 1 according to the invention are shown individually. The basic body 2 consists in this case of several filler layers 8, 9, preferably a first and a second. On the upper side of the upper layer 9, a cover layer 10 is additionally provided. The padding layers 8, 9 are preferably made of a soft foam material, such as EVA, PU or a mixture of both materials. The cover layer 10 is preferably made of microfiber, Alcantara or velour.

In the heel and metatarsal area 3, 4, the base body 2 has an additional reinforcing layer 11 with a cutout 12 for a heel and tendon pad 18. The heel and tendon cushion 18 is preferably designed in two layers, a first layer 18.1 being arranged preferably in the cutout 12 of the reinforcing layer 11 and a second layer 18.2 being arranged in a cutout in the upper layer 9 of the padding . In this case, the pad 18 overlaps in particular the recess 14, the at least two notches 15 of the clip 13 and the clip 13 itself in the metatarsal area 4. The reinforcing layer 11 serves to increase the dimensional stability of the base body 2, in particular in the heel and metatarsal areas 3, 4. In this case, the toe area 5 is preferably designed without a reinforcing layer 11, so that the toes of the wearer are not prevented from bending. In order to straighten the transverse arch of a user's foot, the base body 2 preferably additionally has a pad 19 which, according to this exemplary embodiment, is arranged in the metatarsal region 4 next to the heel pad 18 and forefoot. tendon between the reinforcing layer 11 and the top filler layer 9.

The clip 13 with the recess 14 for the user's heel bone is attached to the underside of the lower padding layer 8 . The clip 13 extends from zone 3 of the heel to zone 4 of the metatarsus. The various notches 15, 16 are also shown, as described with reference to Figures 1 and 2. The at least two first notches 15 extend from the recess 14 in the heel area 3 to the metatarsal area 4. The area 4 of the metatarsal 4 of the base body 2 is essentially flattened in the longitudinal direction (L), so that the lower calcaneal spur of the heel and the tendon plate of the sole of the foot of a wearer remain essentially pressure-free. The outer face 17 of the clip 13 is preferably freely accessible and is preferably not covered by any other layer. Due to this freely movable support, in particular of the tongues formed in the first notches 15, a particularly high dimensional flexibility of the insole 1 is achieved in the region of the tendon plate, so that stress is particularly well relieved in this region. .

The two padding layers 8, 9 and the reinforcing layer 11 form the lateral cover 22 in the heel and metatarsal area 3, 4, which has a concave curvature 24 on the inside 23. As described in connection with In FIG. 1, the curvature 25 in zone 4 of the medial metatarsus is, on the contrary, preferably convex for medial support of the longitudinal arch of the foot of a user. The insole 1 preferably has, in particular in the convexly curved area 25, a support body 26 that can be detachably attached to the base body 2. This can preferably be releasably positioned on the clip 13 by means of elements Velcro closure. Thereby, it is possible to further stabilize the medial support of the longitudinal arch of a user's foot.

Claims (15)

1. Insole (1) for footwear, which has a base body (2) consisting of a heel area (3), a metatarsal area (4), as well as a toe area (5), where The base body (2) has a clip (13) that extends from the area (3) of the heel at least up to the area (4) of the metatarsus and in the area (5) of the heel it has a notch (14) for the calcaneus of a user, characterized in that the clip (13) has at least two notches (15) that extend from the notch (14) in the area (3) of the heel to the area (4) of the metatarsal to configure at least a first tongue (27, 28) and the base body (2) in the metatarsal area (4) is substantially flattened in the longitudinal direction (L), so that the lower calcaneal spur of the heel and the tendon plate of the sole of a wearer remain substantially free of pressure. Insole (1) according to claim 1, characterized in that the base body (2) has a pad (18) for the heel and/or tendon, the pad (18) overlapping the recess (14) and/or at least one notch (15) and/or the clip (13) in the area (4) of the metatarsus. Insole (1) according to claim 1 or 2, characterized in that the base body (2) has at least one pad (19) in the metatarsal area (4) for raising the transverse arch of a user's foot. Insole (1) according to one of the preceding claims, characterized in that the base body (2) has at least one narrowing (20, 21) in the metatarsal area (4). Insole (1) according to one of the preceding claims, characterized in that the base body (2) forms a lateral cover (22) in the heel and/or metatarsal region (3, 4), preferably concavely curved on the inner face (23). Insole (1) according to claim 5, characterized in that the inner face (23) of the cover (22) is convexly curved in the region of the narrowing (20, 21) of the base body (2) for support medial to the longitudinal arch of a user's foot. Insole (1) according to one of the preceding claims, characterized in that the clip (13) arranged on the base body (2) extends into the laterally configured cover (22), in particular in the curved area (25) of convex shape. Template (1) according to one of the preceding claims, characterized in that the base body (2) and/or the clip (13) has a bearing body (26) in the convexly curved area (25) that is can bind releasably or non-releasably. Insole (1) according to one of the preceding claims, characterized in that the clip (13) is made of a fiber-reinforced plastic, in particular carbon-fibre-reinforced. Template (1) according to one of the preceding claims, characterized in that the clip (13) has at least one second notch (16) in the area of the cover (22), in particular in the curved area (25) of convex shape. Template (1) according to one of the preceding claims, characterized in that the clip (13) has a thickness of preferably 0.4 to 1.2 mm, particularly preferably 0.6 mm. Template (1) according to one of the preceding claims, characterized in that the base body (2) has a recess (7) on the outside to house the clip (13), so that the outside (17) of the clip (13) is substantially flush with the outer face (6) of the base body (2). Template (1) according to one of the preceding claims, characterized in that the at least one first and second notch (15, 16) of the clip (13) is wedge-shaped. Insole (1) according to one of the preceding claims, characterized in that the base body (2) is multilayered, preferably with a first and a second filler layer (8, 9) and a cover layer (10 ). Insole (1) according to claim 14, characterized in that the base body (2) has an additional reinforcing layer (11) with a recess (12) in the heel and/or metatarsal region (3, 4). for the pad (18) of the heel and/or tendon.