Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/141—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form having an anatomical or curved form
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
  • A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
  • A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
  • A43B7/142—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the medial arch, i.e. under the navicular or cuneiform bones
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
  • A43B7/143—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the lateral arch, i.e. the cuboid bone
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/22—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like
  • A43B7/223—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like characterised by the constructive form
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
  • A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite

Definitions

• the present invention relates to the field of insoles for footwear.
• the present invention relates more specifically to an insole footwear article respecting the anatomy of the foot to optimize the operation and performance of the foot in a walking cycle.
• insole for article footwear is meant here a sole, removable or not, intended to be disposed within a footwear and comprising a plantar surface intended to be in contact directly or indirectly with the underside of the foot.
• Such a sole is distinguished from an outer sole whose lower face is intended to be in direct contact with the ground.
• article footwear within the meaning of the present invention means throughout the description that follows any article that can be shod; it may be a shoe such as for example a city shoe or a sports shoe. It can also be a boot, a bootie or any other item in which a person can put his foot.
• the present invention will find many advantageous applications, especially for orthopedists by providing an orthopedic insole whose design respects the anatomy of the foot while providing better control of the movement of the foot during a physical activity such as walking or walking. running.
• Walking or running helps advance an individual's body forward while maintaining balance in a dynamic condition.
• the structure of walking (or running) is not fixed: it can differ from one individual to another and even vary in a person depending on conditions.
• walking is periodic and symmetrical, which makes it possible to describe it through a walking cycle.
• the kinematics of the foot evolves during the walking cycle.
• the different movements of the foot can be described and analyzed in the following way: the simplest approach divides the walking cycle according to the periods of contact of the feet with the ground; we mainly distinguish the support phase (about 60% of the cycle) and the oscillating phase (about 40% of the cycle). The two phases alternately alternate for each limb during the walk.
• the walking cycle can be described as follows:
• the foot At the end of the aerial phase, just before the impact of the heel on the ground, the foot is in slight dorsal flexion, inverted, with external tibial rotation.
• the foot then pronates at the same time as a flexion of the knee and an internal rotation of the leg.
• the calcaneal eversion unblocks the arch and the foot can adapt to the ground and absorb the shock wave.
• the foot is then flat on the ground, supporting the total load of the individual, in eversion and abduction while the opposite limb is swinging back and forth.
• the supporting lower limb must support the weight of the body and provide stability as the contralateral limb progresses. This phase is done in two stages:
• the foot interface between the body and the ground, undergoes several natural deformations favoring cushioning and propulsion of the foot while ensuring the balance of the individual.
• the foot ensures during a walking cycle a certain rigidity to support the weight of the body and offers a certain elasticity to adapt to the reliefs of the ground, dampen shocks and allow a good propulsion.
• the foot must ensure the stability and balance of the individual during the walking cycle.
• Document FR 2941135 A1 discloses an orthopedic module for thermoforming an orthopedic insole to solve some of the above problems.
• Such a module has a multilayer structure whose composition promotes the cushioning and deformation of the sole to allow good propulsion.
• the Applicant proposes a new insole design taking into account the anatomy of the foot and ensuring both the balance, the cushioning and the propulsion of the foot during a walking cycle.
• the present invention aims to improve the situation described above.
• the present invention thus aims to solve the various problems mentioned above by providing an insole that respects the anatomy of the foot and significantly improves the performance of the foot (balance, cushioning, propulsion, etc.) during a walking cycle.
• the object of the present invention relates in a first aspect to a flexible insole adapted to be arranged in an article of footwear under the foot of a wearer.
• the sole comprises a front part, a rear part and an intermediate part.
• the front and rear parts are intended to receive respectively the forefoot and the heel.
• the intermediate part is flexible and connects the front part and the rear part.
• the soleplate according to the present invention comprises, in the plantar face, an eversion and inversion module comprising a first and a second reinforcing element.
• the first reinforcing element is located between the rear part and the intermediate part and has a first and a second anatomical areas.
• the first anatomical zone comprises a first arch intended to conform to the inner part of the wearer's foot and extending substantially along the joints between the calcaneus, the talus, the navicular bone and the medial wedge bone.
• the second anatomical zone comprises a second arch intended to conform to the external part of the wearer's foot, extending substantially along the joints between the calcaneus, the cuboid and the fifth metatarsal.
• Such an intermediate portion with first and second camber is preferably arched; it is thus intended to be in direct or indirect contact (and if possible constantly) with the arch of the foot, which ensures a good distribution of the plantar supports.
• the second reinforcing element is situated in the rear part and has a third anatomical zone intended to be in contact with the peroneal tubercle, and a fourth anatomical zone intended to be in contact with the calcaneum, the cuboid and / or the fifth metatarsal.
• the first and second reinforcing elements are arranged relative to one another so as to be able to cooperate together so that a crushing of the module at the level of the rear part causes a deflection of the first and third zones. causing, by compensation with the second and fourth zones, a swirling motion of the intermediate portion in the axial direction of the sole and an elevation of the front portion relative to the intermediate portion.
• This double deformation of the sole thus increases the stability of the individual by promoting eversion and inversion of the foot while improving the propulsion of the foot by an increase in speed by raising the front portion of the sole.
• the energy stored in the heel of the sole during the cushioning phase is restored to the forefoot during the propulsion phase by creating a tendril movement favoring the eversion and the inversion of the foot and accompanying the elevation of the front part relative to the rest of the sole, which has the particular effect of reducing energy expenditure and optimize the dynamic movement (stride, not) of a user during a physical activity such as walking, running or practicing any sport.
• This spin effect is obtained by the rebalancing of the second and fourth zones following the deflection of the first and third zones.
• the first and third zones deform, and the second and fourth zones constitute a rigid support then causing a spin movement.
• This movement of spin (corresponding internal pivoting of the part intermediate in the longitudinal direction of the sole) naturally accompanies the kinematics of the foot during the walking cycle and thus promotes the movement of inversion and eversion.
• first and second reinforcing elements are superimposed on one another.
• first and second reinforcing elements are nested one inside the other.
• they are formed into one another in the mass for example by molding, thermoforming or thermoforming.
• the sole is at least partially made of an elastically deformable material of the type for example a thermoplastic resin (possibly of the composite type).
• the material used thus has an elastic resistance to crushing, in particular to limit the prono-supination disorders of the midfoot.
• polypropylene may be used.
• the resin may comprise a polyamide.
• resins may also be chosen, for example a polyolefin resin or a bio-sourced resin (for example from lin).
• the elastically deformable material is loaded with glass fibers.
• the first and second reinforcing elements are constituted at least partially in a rigid or semi-rigid material respectively having a first and a second determined hardness coefficient, the second hardness coefficient being greater than or equal to the first hardness coefficient.
• the first and second hardness coefficients are in the range of from 10 to 50 Shore A.
• the intermediate portion has in its middle portion a substantially curved blade transversely and arcuate longitudinally.
• this blade extends between the front edge and the rear edge of the intermediate portion, the first and second zones being disposed at the intermediate portion on either side of the blade.
• this blade is deforming promote the damping phase by absorbing some of the energy when the foot comes into contact with the ground, then will resume its shape to accelerate the elevation of the part before the sole. It is also observed that the presence of this blade between the two zones of the intermediate portion promotes the movement of tendrils.
• the curved shape of this blade is anatomical and allows a slight rise to the back of the metatarsal heads in the form of a retro capital support median. It is thus understood that the radius of curvature of the blade is sized to form a medial capital retro support at the rear of the metatarsal heads of the foot when said foot rests on said sole.
• the first camber extends in the rear portion to the rear end of the sole to fit the arch.
• the sole comprises a peripheral rim extending the rear portion of the first and second camber to form a heel cup.
• a heel cup allows to marry the shape of the heel for good support of it and the midfoot.
• the peripheral rim has a height substantially between about 8 to 20 millimeters; such a height ensures good support.
• the highest part of the rear part is on the side of the inside of the foot. Such a configuration favors the movement of eversion and inversion respecting the anatomy of the foot.
• first and second zones and the third and fourth zones are interconnected respectively by a first and second rigid junction elements.
• junction elements allow, thanks to their rigidity, to compensate for the deflection of the first and third zones by transmitting the absorbing energy to create support in the second and fourth zones and to promote the movement of tendrils.
• the sole comprises a liner adapted to at least partially wrap the foot of the wearer.
• a slipper improves the support in position of the foot and its comfort.
• the soleplate according to the present invention comprises, on the lower face, at least one wedging element positioned so as to limit the flexion of the soleplate.
• the subject of the present invention relates, according to a second aspect, to an orthopedic shoe comprising an insole as described above.
• the present invention proposes an innovative design taking into account the anatomy of the foot and the kinematics of its natural biomechanical deformations to improve the comfort of the wearer while guaranteeing stability and performance.
• FIGS. 4 illustrate an embodiment of this embodiment that is devoid of any limiting character and on which:
• Figure 1 schematically shows a top view of a sole according to an embodiment of the present invention
• Figure 2 schematically shows a top view of an eversion and inversion module according to an embodiment of the present invention
• FIG. 3 schematically represents a view from above of an eversion and inversion module according to FIG. 2 with the skeleton of a correctly positioned foot;
• FIG. 4 schematically represents a sectional view of a foot at the rear of the metatarsal heads and an integrated blade on a soleplate according to FIG.
• the foot performs during a damping during the first contact with the ground (here, the heel and more particularly the outer side of the foot).
• This damping phase comprises a lowering of the plantar arch and then, during the support, an eversion movement of the foot by which the heel pivots slightly about a substantially horizontal axis and oriented in the axis of the foot, in a sense in which the ankle is getting closer to the inside of the foot.
• the foot During the following phase of propulsion, the foot returns to its original position when it leaves the ground by a reversal movement (and reformation of the arch of the arch).
• Figure 1 shows an insole 100 for a right foot.
• Such a sole 100 is made for example from a plate of thermoplastic material (such as for example polypropylene filled with glass fibers) and hot deformed for example by thermoforming.
• thermoplastic material such as for example polypropylene filled with glass fibers
• the soleplate 100 according to the present invention thus has a mechanical elasticity which allows it to deform under stress and to resume an initial shape once the stress is relaxed.
• the sole 100 has a front portion 10 for receiving the forefoot, a medial zone 30 (or intermediate zone) and a rear zone 20 for receiving the heel.
• the intermediate portion 30 is flexible and connects the front portion 10 and the rear portion 20 providing physical continuity between the two parts 10 and 20.
• the sole 100 further has a peripheral flange 100c forming a heel cup 20a in the rear portion 20 to ensure a good fit of the heel.
• the sole 100 has on its plantar face 100a an eversion module and inversion 40.
• Such a module 40 is characteristic of the present invention.
• the module 40 comprises a first reinforcing element 41 located astride between the rear part 20 and the intermediate part 30, and a second reinforcing element 44 located in the rear part 20.
• the first reinforcing element 41 has a first anatomical zone 4a comprising a first camber 42 intended to fit the inside of the wearer's foot and extending substantially along the joints between the calcaneus, talus, navicular bone and medial wedge bone.
• the first reinforcing element 41 also has a second anatomical zone 4 lb comprising a second camber
• anatomical zone 44 has a third anatomical zone 44a intended to be in contact with the tubercle peroneal, and a fourth anatomical zone 44b intended to be in contact with the calcaneus, the cuboid and / or the fifth metatarsal.
• first 4a and second 4lb zones as well as the third 44a and fourth 44b zones are interconnected respectively by a first 41c and second 44c rigid junction elements.
• first 41 and second 44 reinforcement elements are superimposed with respect to each other so that, during an initial support of the foot, the crash E of the heel on the module 40 causes a deflection of the first 4la and third 44a zones.
• This deflection is compensated by the second 4lb and fourth 44b zones which in turn causes compensation by a swirling movement V of the intermediate portion 30 in the axial direction of the soleplate 100 simultaneously followed by an enhancement R of the front portion 10 by referred to the intermediate part 30.
• junction elements 4lc and 44c which ensure the transmission of energy causing the twisting V. Indeed, during the deflection of the first 41a and third 44a zones, the junction elements 41c and 44c solicit the second 41b and fourth 44b areas which then serve as support to compensate for the bending motion and caused twisting V.
• the module 40 deforms elastically under the pressure of the foot.
• the module 40 allows the raising of the front portion 10 relative to the rest of the sole 100, which promotes the propulsion of the foot.
• the design of the module 40 thus makes it possible to better control the movement of the foot in a walking cycle by promoting the cushioning and propulsion properties of the foot, in particular by promoting the movements of eversion and inversion of the foot.
• the second 41b and the fourth 44b zones are substantially merged with each other, which improves the twisting V.
• a rigid or semi-rigid material having different hardness coefficients (between 10 and 50 Shore A) is preferably used for the first and second reinforcement elements.
• the hardness coefficient of the material used for the second reinforcing element is substantially greater than or equal to the hardness coefficient of the material used for the first reinforcing element.
• a blade 50 on the intermediate portion 30 is positioned in the median part of the intermediate portion; it has a flared shape which is substantially transversely curved (illustrated in FIG. 4) and arched longitudinally between the front edge 30a and the rear edge 30b of the intermediate portion 30.
• the blade 50 has a radius of curvature sized to form a medial capital retro support at the rear of the metatarsal heads of the foot when said foot rests on said soleplate 100.
• a radius of curvature sized to form a medial capital retro support at the rear of the metatarsal heads of the foot when said foot rests on said soleplate 100.
• the foot remains thus maintained, and the module 40 contains the exaggeration of a torsion movement which compromises the stability. For various reasons, the instability of the foot causes this movement of inversion / eversion.
• the action of the module 40 at this precise moment is to make it possible to contain the crushing movement of the foot without preventing it and to increase the speed by pushing it forward.
• the role of the module 40 is to stabilize the calcaneo-tibial axis during the time of absorption of the impact on the ground. It is at this point that the shock must be absorbed and the supporting member must be stable to maintain progress.
• the holding of the stabilizing bowl 20a and the action of the module 40 makes it possible to preserve the calcaneo-leg axis in its alignment.
• the deformation of the module 40 allows a slight rise to the rear of the metatarsal heads in the form of a retro-capital center support, which has the effect of continuing the push towards the before and in the axis the forefoot.
• the present invention thus provides foot specialists (chiropodists and others) with a soleplate which makes it possible to optimize the stability, the verticality of the entire step by guiding correctly in the axis of the foot during the course of the step in the three dimensions.
• the sole 100 stabilizes the calcaneo-tibial axis.
• the sole 100 is deformed by twisting and thus propels the mediotarse ensuring stability and verticality foot and floor overlying.
• the deformation of the sole 100 continues to the rear of the metatarsal heads continuing to stabilize the forefoot in its axis.

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• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=62684917

Family Applications (1)

Country Status (4)

Family Cites Families (4)

• 2018
  • 2018-04-13 FR FR1853229A patent/FR3080007B1/fr active Active
• 2019
  • 2019-04-01 EP EP19719567.0A patent/EP3773045B1/de active Active
  • 2019-04-01 WO PCT/FR2019/050755 patent/WO2019197749A1/fr active Application Filing
  • 2019-04-01 CA CA3094040A patent/CA3094040A1/fr active Pending

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