EP0140985B1 - Schuheinlage - Google Patents

Schuheinlage Download PDF

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Publication number
EP0140985B1
EP0140985B1 EP19830109926 EP83109926A EP0140985B1 EP 0140985 B1 EP0140985 B1 EP 0140985B1 EP 19830109926 EP19830109926 EP 19830109926 EP 83109926 A EP83109926 A EP 83109926A EP 0140985 B1 EP0140985 B1 EP 0140985B1
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EP
European Patent Office
Prior art keywords
insole
parts
silicone rubber
set forth
sole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19830109926
Other languages
English (en)
French (fr)
Other versions
EP0140985A3 (en
EP0140985A2 (de
Inventor
Toshiro Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP19830109926 priority Critical patent/EP0140985B1/de
Priority to DE8383109926T priority patent/DE3375062D1/de
Publication of EP0140985A2 publication Critical patent/EP0140985A2/de
Publication of EP0140985A3 publication Critical patent/EP0140985A3/en
Application granted granted Critical
Publication of EP0140985B1 publication Critical patent/EP0140985B1/de
Expired legal-status Critical Current

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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
    • A43B7/28—Adapting the inner sole or the side of the upper of the shoe to the sole of the foot

Definitions

  • the invention relates to an improved insole which is used for conservative treatment, for example for bandy legs, knock knees, flat feet, gonarthritis deformans, metatarsalgia, hallux valgus, or the like.
  • insoles of hard or relatively hard materials such as metal, for example aluminium, hard plastics, leather, cork or the like.
  • Such insoles have to be deeply curved at their brim, to compensate for their bad adhesion to the human sole.
  • insoles of such type are bulky, and accordingly it is difficult, or rather impossible to insert them into socks. They are not retained in the socks and may damage them. They are not suited to be used even as spacers for slippers or sandals.
  • insoles When such insoles are inserted in shoes, they prevent the deformation of the shoes (especially of the sole thereof), and cause a feeling of physical disorder, especially during walking or in the standing position of the user, so that it takes a considerable number of days until the user gets accustomed. Further, when using a holder, it is difficult to put on any footwear.
  • Silicone rubber however is expensive, has a poor tensile strength, and crack resistance due to its weak intermolecular forces and its non-crystal structure. Therefore, it may be damaged by unreasonable or continuous use. Further, a mold of patient's foot must be made or the patient's foot has to mold the insole. This is costly and time consuming. Further, the silicone rubber makes the patient feeling the insole as a cool subject particularly in winter. Finally it is difficult to eliminate the bubbles occurring during the molding process.
  • the insole according to the invention has a small density and is not bulky. It accommodates readily to the movement of the human sole and closely adheres thereto.
  • the insole according to the invention can be used in connection with usual socks or simple holders. It can be cleaned by washing and gives the user a warm and comfortable feeling. It can be used a long time, and is of light weight and low- price.
  • the insole is well suited for the conservative treatment as mentioned above.
  • the material used has enough flexibility and toughness, is resistant against breakage, is simple to be treated after molding, and has a good adhesion to the human sole. Further the foamed structure enhances the heat insulation. Owing to these properties, the insole has an effect by which pain of concerned foot portions is reduced.
  • the insole it is unnecessary for the insole to have an extra thickness to achieve the desired strength and form-stability, or to form a largely raised brim to obtain a good fit for the sole.
  • FIGs. 1 and 2 there is shown an embodiment of an insole (1).
  • This insole (1) is exclusively for left feet and used for the conservative treatment of the baker leg or the like.
  • the upper face of the insole (1) is made in the undulating form of a human sole part (31) (Fig. 3), and the whole of the insole has the form of a wedge being thicker toward the left side (11) for obtaining the expected therapeutic effect.
  • the insole (1) is formed of foamed silicone rubber which develops the gum-like elasticity under normal temperatures.
  • reference number (2) indicates small holes for air permeation which extend through from the upper face to the lower face.
  • (5) indicates the small porous foam, which are equally distributed in whole of the insole (1).
  • the insole (1) is not bulky relative to the foot (3) but is rather compact.
  • the insole (1) has an extremely good accommodation to the sole and generates a comfortable feeling; it is further skidproof, and can satisfactorily follow the movement of the sole (31). Consequently, the load on the insole (1) is reduced and the stability of the foot is improved.
  • the insole (1) may be applied to the sole (3) by use of a holder (4) as shown in Fig. 4(a).
  • This holder (4) is constructed, for example, in such a manner that band portions (43) (43) are attached to both sides of a pocket body (42) which has an opening portion (41) for putting in and removing the insole (1), and that coupling means (44) (44) are provided on both ends of those band portions (43) (43).
  • the pocket body (42) is applied to the sole in the state where the insole (1) is received within the pocket body (42), and then the band portions (43) (43) are coupled above the instep of the foot.
  • Materials for the pocket body (42) and the band portions (43) (43) are preferably of good adhesion to the sole (3) and of fine air permeability. To this end, they are normally made of cloth, for example, stretchy yarn, spandex, and the like, or knitted goods.
  • face fasteners are used, but in addition to that or alternatively buttons, snaps, hooks, strings and others could be used.
  • the band portions (43) (43) are separated into two portions in Fig. 4a they may be formed as a single continuous arch-shaped band, both ends of which being fixed to the pocket body (42). It is also possible to manufacture the insole with a simple holder (6) by molding the band portions (43) integrally with the insole as shown in Fig. 5.
  • the insole (1) can be put on the sole (31) very simple and stably irrespective of indoor and outdoor use and irrespective of what kind of footwear is used.
  • the whole of the insole (1) follows the movement of the sole (31), thereby the desired therapeutic effect is enhanced.
  • a sock can be drawn over the applied insole 1 because the holder does not exaggerate.
  • the holder (4) has a good air permeability since it is made of cloth or knitted goods, and it is also hygienic because it is washable.
  • the insole is provided with small holes (2), as shown in Fig. 3, which are never filled with dampness due to perspiration, thereby the cleanliness of the foot (3) is preserved and the unpleasant sensation of somehow offensive smell is eliminated to a large degree.
  • the holes (2) might be about 0.5-2 mm in diameter and about 10-50 in number.
  • the curvature of the insole (1) described above is relatively small except the insole, shown in Fig. 6, which can be manufactured for the purpose of using it for shoes.
  • the insole (1) is molded of a silicone compound which has a gum-like elasticity in the vicinity of the normal temperature.
  • the silicone rubber material used is a mixture of both ,inorganic filler and hydrous silicate powder with heat-vulcanized silicone rubber. If only calcium carbonate as a filler is mixed with silicone rubber, the fluidity is kept and the material has a good workability. A positive effect on the swell in volume is not achieved neither a lowering of the production costs. On the other hand, where only hydrous silicate powder is mixed to silicon rubber it is difficult to disperse it in the silicone rubber. However it leads to a foam-formation. On the other hand the fluidity is lowered remarkably, thus the workability is reduced. Therefore good results are obtained by mixing and dispersing both components: calcium carbonate and hydrous silicate powder into silicone rubber at a certain ratio.
  • inorganic fillers can be used various sorts and grain sizes of calcium carbonate, magnesium carbonate, talc, aluminium hydroxide, magnesium hydroxide, calcium sulfate, calcium silicate, ground silica, clay, mica, glass beads, microballoon (hollow spherical glass powder), silica balloon, and others.
  • Preferred are those which have a low in oil absorption value so that the fluidity may be hard to drop at the time of mixing silicone rubber, and which allow a surface treatment such as a silane treatment with a view to increase the strength of the product, especially the tensile strength, cracking resistance, and so on.
  • surface-reactive calcium carbonate the grain surface thereof being activated by silane coupling agent.
  • micro-balloon is one of the most preferable filler. Further preferred is a filler which specific gravity is as low as possible.
  • hydrous silicate powder fulfills its function such that it is resulting in high strength and in the reduction of production cost, and further it generates small uniform bubbles by the action of water contained therein (water of crystallization), playing an important role in making the product light-weight. In this way, it does not need any particular foaming agent belonging to an organic group.
  • white carbon which is one of the non- crystal hydrous silicate powder.
  • any pigment and other additives can be freely mixed so far as it is possible to obtain a product having the expected object properties.
  • the preferable mixture ratio of these components is 5-75 parts (by weight: herein the same) of an inorganic filler and 5-30 parts of hydrous silicate powder together with 100 parts of heat-vulcanized silicone rubber and 10 parts (be changed in compliance with the kind of silicone rubber or vulcanizing agent) of vulcanizing agent.
  • an inorganic filler When mixing more than 75 parts of the inorganic filler, the fluidity drops and the workability becomes bad, and when less than 5 parts are used, small bubbles are not obtained in the foam-formation, so that blow-off holes occur.
  • 10-50 parts When mixing more than 30 parts of hydrous silicate powder, the fluidity drops considerably, and when less 5 parts are used, the foam-formation is not satisfactory.
  • Especially preferred are 10-20 parts.
  • the vulcanizing agent As a start 10 parts of the vulcanizing agent are mixed and stirred thoroughly with 100 parts of the heat-vulcanized silicone rubber (a colorless, transparent liquid). Next, when commingling 25 parts of calcium carbonate being previously surface- treated by silane coupling agent, and 15 parts of white carbon which is noncrystal hydrous silicate powder of high purity, there can be obtained an abundantly fluid slurry. After being poured into a mold, the slurry is heated at about 100°C in a thermostatic oven for about one hour to harden it. The object which is removed from the mold is a hardened body which is light-weight and contains many small bubbles distributed uniformly in the whole surface, as shown in Fig. 1 and Fig. 2. The hardened body is the insole (1) described above.
  • the product obtained can be subjected to work afterwards. Accordingly, it can be cut and grounded to fit the patient's foot.
  • the insole can be selected out of a plurality of insoles which are manufactured in advance.
  • the bottom part (13) has a flat shape, as shown in Fig. 7.
  • the semi- product (14) can be finished by cutting and/or grinding the bottom part (13) to fit the patient's foot.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (5)

1. Schuheinlage, die aus einem Gemisch aus einem Scilicongummi und einem anorganischen Füller geformt ist, gekennzeichnet durch ein Gemisch, das 5-75 Gew.-Teile des anorganischen Füllers, 5-30 Gew.-Teile eines wässrigen Silkatpulvers und einen Vulkanisationsbeschleuniger pro 100 Gew.-Teilen des Silicongummis enthält, und eine durchlässige Struktur.
2. Schuheinlage nach Anspruch 1, gekennzeichnet durch mehrere kleiner Lächer (2) zum Durchtritt von Luft.
3. Schuheinlage nach Anspruch 1 und 2, dadurch gekennzeichnet, daß Bandabschnitte (43) einstückig mit der Schuheinlage ausgeformt sind.
4. Schuheinlage nach den Ansprüchen 1-3, dadurch gekennzeichnet, daß sie farbig, insbesondere hautfarben ist.
5. Schuheinlage nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß sie aus einem geformten Teil ausgeschnitten und/oder nach dem Formen geschliffen wird.
EP19830109926 1983-10-05 1983-10-05 Schuheinlage Expired EP0140985B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19830109926 EP0140985B1 (de) 1983-10-05 1983-10-05 Schuheinlage
DE8383109926T DE3375062D1 (en) 1983-10-05 1983-10-05 An insole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19830109926 EP0140985B1 (de) 1983-10-05 1983-10-05 Schuheinlage

Publications (3)

Publication Number Publication Date
EP0140985A2 EP0140985A2 (de) 1985-05-15
EP0140985A3 EP0140985A3 (en) 1985-06-12
EP0140985B1 true EP0140985B1 (de) 1988-01-07

Family

ID=8190723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830109926 Expired EP0140985B1 (de) 1983-10-05 1983-10-05 Schuheinlage

Country Status (2)

Country Link
EP (1) EP0140985B1 (de)
DE (1) DE3375062D1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5063692A (en) * 1990-05-24 1991-11-12 Junko Suginaka Footwear and insole pad thereof
DE19914128C2 (de) * 1999-03-27 2003-04-03 Thaemert Orthopaedische Hilfsmittel Gmbh & Co Kg Einlage, insbesondere Fersenbett

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1694271U (de) * 1952-02-20 1955-03-03 Afina Gummiwerke G M B H Orthopaedische formbrandsohle.
GB798669A (en) * 1956-12-12 1958-07-23 Midland Silicones Ltd Improvements in or relating to organosiloxane elastomer foams
US3271332A (en) * 1964-12-07 1966-09-06 Minnesota Mining & Mfg Siloxane foam
DE2334837A1 (de) * 1973-07-09 1975-02-06 Ernst Boll Verfahren zur herstellung von orthopaedischen schuhen
FR2427087A1 (fr) * 1978-06-02 1979-12-28 Godo Jean Claude Utilisation des elastomeres de silicone en appareillage orthopedique moule
DE2834119C2 (de) * 1978-08-03 1981-01-15 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Organopolysiloxanformmassen, die feinporige, gummielastische Formschaumkörper ergeben
DE2926246A1 (de) * 1979-06-29 1981-01-15 Stefan Sportschuhe Verfahren zum anpassen einer schuheinlage, schuheinlage und fertigungssatz zum durchfuehren des verfahrens
DE3046756A1 (de) * 1980-12-12 1982-07-22 Götz-Gerd Prof. Dr.med. 4400 Münster Kuhn Verfahren zur herstellung eines fussbettes

Also Published As

Publication number Publication date
EP0140985A3 (en) 1985-06-12
EP0140985A2 (de) 1985-05-15
DE3375062D1 (en) 1988-02-11

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