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
  • A43B7/1415—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
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B13/00—Soles; Sole-and-heel integral units
  • A43B13/38—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process
  • A43B13/386—Built-in insoles joined to uppers during the manufacturing process, e.g. structural insoles; Insoles glued to shoes during the manufacturing process multilayered
• • 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
  • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
  • A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
  • A43B17/026—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient filled with a non-compressible fluid, e.g. gel, water
• • 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
  • A43B7/1455—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 with special properties
  • A43B7/147—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 with special properties for sick or disabled persons, e.g. persons having osteoarthritis or diabetes

Definitions

• the innovation concerns multi-purpose diabetic shoes with optimized construction, suitable as a casual, formal and hiking footwear.
• the special footwear for diabetics is designed in a way that it is able to prevent further irreversible physiologiocal changes on the legs of diabetics.
• the main aim of this footwear is to protect the legs of diabetic from possible injury and further defect.
• the most important aspect of the design is the structure of its insole.
• insoles There are many kinds of insertable or stretching insoles currently on the market, that are designated to provide the best possible comfort and fit for their user. At the same time, they should completely stop or mitigate inherited or gained foot deformations or walk faults. Vast number of these products is also adapted to massage the foot and to stimulate its nerve endings.
• Insoles of shoes can be classified in two main groups differentiating in their construction. Firstly, there are insoles that contain a layer of suitable deformable material, such as cork, which temporarily or infinitely adapts to the shape of the foot of theis user.
• a layer of suitable deformable material such as cork
• these soles belongs for example the solution according to the german patent file no. 3406504, where the insoles includes as well a layer consisitng of cork mash joint by soft glue, which adapts to the lower shape of user's foot during its wear.
• the same solution concerns for instance japanese patent filing no. 20012994008, where one of the layers of the insole consists of cork, which adapts to the lower shape of foot of its user after longer wear duration.
• These solutions have, though, significant disadvantages - if the user has, for example, incorrectly formed foot, the inner sole copies the wrong shape and instead of curing such fault, it actually keeps worsening the foot during long term use.
• Second group of insoles are items, on whose upper side, which is in contact with the foot of the user, is modelled a relief, whose area more or less corresponds with the footprint of the foot.
• solutions belongs for example solution described in japanese patent no. 7039402, where the area of the insole, which is in contact with the foot of the user, is formed by groups of protrusions and dimples.
• the disadvantage of such solution is, though, that it is formed on a unified shape of human foot and doesn't reflect the individual shape. This is especially exhibited in the differences of shape and the incline of toes, hence the foot adapts to the shape of the insole and not the other way round, as it should be.
• Footwear specified in the European patent filing EP1997/006565 consists of a top and lower bearing part, which is joined to the mentioned vamp, and it includes outsole with intentionally integrated wedge heel. That is adapted for placement of internally sorted insole or auxiliary insole with supportive elements (based on a layer of granulated material, for example) at least under a part of this internally sorted insole.
• supportive elements elastically deform under the user's weight, which in effect causes internally sorted insole to deform in such way, that it permanently takes the unique anatomic shape of the foot of the user of such shoe.
• Patent filing USA 2002/157278 describes breathable footwear, that consits of breathable vamp and breathable insole joined to togetherer by quilted seam. Beneath the insole is joined breathable and waterproof membrane. Simple unit of elastomer outsole with passable holes is joined to the vamp/insole unit by glue or by direct injection.
• Pending patent PCT 02/32246 describes footwear with an outsole, whose sole is perforated by a number of drains in the form of a valve so, that the vapour permeating down through the multi-layer outsole, which is sorted over them, has to be firstly directed to the narrow drains.
• Footwear optimized with focus on user comfort, suitable for diabetics, especially as a work footwear designated into difficult enviroments, is subject of public Czech patent filing PV 2009-365.
• Vamp of the shoe is, in the instep area, where it transitions to the complete tongue (that's critical regarding bruises), equipped with cushioning.
• In the tip of the shoe it is equipped by steel support and with plastic thermo-heel protector in the heel part.
• To its cork shaping element is joined tread layer of the outsole out of elastomer mixture via intermediate layer of injected thermoplastic elastomer.
• the insole structure is composed not only out of mentioned sewable insole, but as well out of insertable insole.
• the sewable insole has got modelled component on the upper face of its structural bearing layer, which has got hollows in the areas of the highest pressure concentration, especially in the area under the toes, area between the metatarzal bones, area under the central and side part of the foot and in the area under the heel bone.
• According to the principle of negative-positive into these hollows fit similiarly designed elevated components from the gel filament placed in the lower dampening layer of the insertable sole.
• footwear has an optimized construction suitable for diabetics, however, its construction was designed for work shoe, which is not suitable for other uses, such as casual, formal or hiking footwear.
• Multi-purpose footwear for diabetics with optimized construction described in the invention does away with mentioned disadvantages, suitable as casual, formal or hiking footwear with outsole glued to the vamp of the shoe.
• the main idea of the invention lies in the novel production of the footwear fot diabetics, described by following traits:
• stiffening vamp elements are made of elastic thermoplastic materials with the shape memory
• the inner equipment of the shoe consists of sewable insole with lower non-wowen fibrous layer and upper lightened layer with open pores and shape memory, complimented by insertable insole consisting of lower layer, which has heightened formed gel components on its lower side in the areas of the highest foot stress, especially in the area under the fingers, under the metatarzal bones, area under the middle and rear side parts and under the heel bone,
• the heightened components with gel filament can be embedded by pressure in the upper lightened layer of the sewable insole with shape memory
• the insertable insole also includes middle layer based on the dampening foam with shape memory and upper textile layer,
• the glued outsole part contains midsole based on lightened polyurethane and on-step contact layer based on compact thermolastic polyurethane
• the sewable insole has got upper lightened layer based on polyurethane foam with open pores and shape memory joined to the upper surface of the non-wowen fibrous layer.
• the hightened gel components can be embedded by pressure in this lightened layer of the insertable insole, are manufactured from compact polyurethane with the ability of compensation for the reduction of the tissue on the foot, and thus reduce the risk of skin creaks and creation of ulcers.
• the insertable insole contains . lower and middle layer based on the dampening materials with open pores, while in order of better air circulation, these layers are spot-joined around the foot.
• the lower layer of the insertable insole is made of permanently elastic polymer material, especially from polyurethane with open pores, without permanent deformation resulting from the ballast of the human body.
• the middle layer of the insertable insole is manufactured from shape polymer foam, especially based on polyurethane with open pores with the ability of adapting to the original shape of the foot of the user, including possible deformations or even smaller amputations.
• the midsole of the outsole part can be manufactured from lightened polymer material, especially polyurethane, that can dampen the hits during walk.
• the contact layer of the outsole overlaps the vamp by 3 mm to 4 mm and it's made of polymer material, especially of compact polyurethane and it's furnished with finely cut tread with anti-skid attributes.
• Fig. 1 - is the composition and execution of single components of the footwear for diabetics according to the invention
• Fig. 2 - shows the outer appearance of the footwear regarding the invention - in the male version
• Fig. 3 - shows the outer appereance of the footwear regarding the invetnion - in a female version
• Multi-purpose footwear for diabetics with optimizd construction in the production sample is, due to its derb vamp 1 with lowered derb and closing mechanism able to compenate for possible minor foot deformations.
• the stiffening vamp elements are manufactured from elastic thermoplastic materials with shape memory.
• the vamp has got different appearance in male footwear (see fig. 2) and female footwear (see fig. 3).
• the inner equipment of the shoe (see fig. 1) consists of sewable insole 2 with lower non-wowen fibrous layer 2T and upper lightened layer 22 with open pores and shape memory, complimented by insertable insole 3 consisting of lower layer ⁇ which has heightened formed gel components 3 ⁇ (note: in fig.
• the insertable insole 3 includes middle layer 3 ⁇ 2 based on the dampening foam with shape memory and upper textile layer 33.
• Glued outsole part 4 includes midsole 4 based on the lightened polyurethane and on-step contact layer 4 ⁇ 2 based on compact thermoplastic polyurethane.
• the sewable insole 2 has got upper lightened layer 2 ⁇ 2 based on polyurethane foam with open pores and shape memory placed on the upper surface of the lower non-wowen fibrous layer 2J,.
• lightened layer 22 are hightened gel filled components 3.4. which can be embedded by pressure in the insertable insole 3. These components are manufactured from compact polyurethane with the ability to compensate for reduction of tissue on foot and can lower the risk of skin creaks and ulcer creation.
• the insertable insole 3 includes lower layer 3_J . and middle layer 32 based on dampening materials with open pores, whereas these layers 3 ⁇ 1, 3 ⁇ 2 are spot-joined in order to provide air circulation around the foot.
• the lower layer _A of the inserbatle insole 3 is made of permanently elastic polymer material, especially from polyurethane with open pores without permanent deformation resulting from ballast.
• the middle layer 32 of the insertable insole is made of shape polymer foam, especially based on polyurethane with open pores with ability to adapt to the original shape of user's foot, including possible deformations or even minor amputations.
• the midsole 4J_ in the outsole part 4 is manufactured from lightened polymer material, especially form polyurethane with the abiity to dampen hits during walking.
• the contact layer 4 ⁇ 2 in the outsole part 4 overlaps the vamp by 3 mm to 4 mm. It is produced from polymer material, especially from compact polyurethane and it's provided with finely cut tread with anti-skid attributes.

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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)
• Diabetes (AREA)
• Rheumatology (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53835839

Family Applications (1)

Country Status (3)

Families Citing this family (4)

Family Cites Families (3)

• 2014
  • 2014-07-17 CZ CZ2014-503A patent/CZ2014503A3/cs unknown
• 2015
  • 2015-06-29 EP EP15749963.3A patent/EP3169176A2/en not_active Withdrawn
  • 2015-06-29 WO PCT/CZ2015/000067 patent/WO2016008458A2/en active Application Filing

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