EP0198951A2 - Dispositif orthopédique de support, notamment insertion orthopédique pour chaussures et son procédé de fabrication - Google Patents

Dispositif orthopédique de support, notamment insertion orthopédique pour chaussures et son procédé de fabrication Download PDF

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Publication number
EP0198951A2
EP0198951A2 EP85112695A EP85112695A EP0198951A2 EP 0198951 A2 EP0198951 A2 EP 0198951A2 EP 85112695 A EP85112695 A EP 85112695A EP 85112695 A EP85112695 A EP 85112695A EP 0198951 A2 EP0198951 A2 EP 0198951A2
Authority
EP
European Patent Office
Prior art keywords
support part
part according
orthopedic support
area
orthopedic
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.)
Granted
Application number
EP85112695A
Other languages
German (de)
English (en)
Other versions
EP0198951B9 (fr
EP0198951A3 (en
EP0198951B1 (fr
Inventor
Jürgen Kremendahl
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.)
Globus Berkemann GmbH and Co KG
Original Assignee
Globus Fussstuetzenfabrik Karl Kremendahl
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 Globus Fussstuetzenfabrik Karl Kremendahl filed Critical Globus Fussstuetzenfabrik Karl Kremendahl
Priority to AT85112695T priority Critical patent/ATE38766T1/de
Publication of EP0198951A2 publication Critical patent/EP0198951A2/fr
Publication of EP0198951A3 publication Critical patent/EP0198951A3/de
Application granted granted Critical
Publication of EP0198951B1 publication Critical patent/EP0198951B1/fr
Publication of EP0198951B9 publication Critical patent/EP0198951B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A43B7/1405—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
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
    • 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
    • A43B7/22—Footwear with health or hygienic arrangements with foot-supporting parts with fixed flat-foot insertions, metatarsal supports, ankle flaps or the like

Definitions

  • the invention relates to an orthopedic support part, in particular an orthopedic support insert made of plastic.
  • the invention also relates to a method for producing the orthopedic support part.
  • Support parts are required in orthopedics, which must have different zonal properties.
  • an orthopedic shoe insert with a support area for the midfoot and a heel area is required that the heel area is elastically flexible and the support area is relatively stiff, but also still elastic, and is also re-deformable to adapt to individual foot shapes.
  • Other orthopedic support parts must also meet these requirements, e.g. Cervical orthoses, peroneus splints, etc.
  • Orthopedic support parts in particular orthopedic shoe inserts made of thermoplastic material, are already known and can be deformed. Particularly in the case of orthopedic shoe inserts with a heel area, a material thickness must be selected to ensure sufficient support rigidity, which causes an unpleasant, so-called application in the shoe and makes it uncomfortable to wear. The products become heavy and rigid and possibly also expensive due to the required amount or thickness of material. Zones of different properties that meet the requirements are almost not realizable. You already have zones e.g. ground thinner in the heel area of an orthopedic shoe insert to achieve different properties. However, the thin zones break too easily, especially in the transition area to the midfoot area, on which the person's weight rests.
  • an orthopedic shoe insert which consists of a thermoplastic plastic that maintains its given, anatomically designed shape elastically resilient at normal use temperature and is plastically deformable at elevated temperature and maintains this forced shape after cooling.
  • the plastic is a casting resin, in particular a glass fiber reinforced acrylic casting resin, with several layers of a tubular jersey fabric serving as reinforcement. Between 10 and 14 layers of tubular jersey fabric are used.
  • the various intermediate layers of Glass fabric material placed in steps, whereby the heel tread area can be very thin with only a few layers. This ensures that the heel contact surface is less stiff than the other parts of the shoe insert.
  • the process for producing the known shoe insert is extremely complex. Different stiffnesses are caused by different thicknesses of the plastic material and by the number of fabric inserts. In addition, only one blank can be produced, which must then be processed by grinding or milling.
  • the object of the invention is to provide one-piece orthopedic support parts, in particular one-piece orthopedic shoe inserts made of plastic, which can be easily and repeatedly deformed, can be made very thin and yet provide the required support force without risk of breakage and are inexpensive and simple with zones of different properties are producible.
  • the orthopedic support part in particular the orthopedic shoe insert, consists of one thermoplastic linear polyester (polyalkylene terephthalate), namely from polyethylene terephthalate, hereinafter referred to with the internationally known abbreviation PETP.
  • polyalkylene terephthalate polyethylene terephthalate
  • a shoe insert made of glass fiber reinforced PETP is already known, but has no heel area.
  • the support insert is extremely stiff and has therefore not been able to assert itself.
  • this plastic By selecting this plastic, it has been possible to create orthopedic support parts, in particular orthopedic shoe inserts, which can be optimized in terms of their properties. With this plastic, it is possible to create zones of different thickness and regardless of the thickness of different elasticity and rigidity or support strength and to choose dimensions in which such properties do not occur with other plastics.
  • the heel area in the material is thinner than the support area and resiliently flexible, while the support area is so stiff that it remains dimensionally stable when loaded by the body weight transferred from the foot and at the temperatures occurring in the shoe.
  • the thickness in Heel area is, for example, 0.8 to 1.1 mm, while the thickness in the support area is 3.2 to 3.6 mm.
  • the different properties (elasticity - rigidity) of these areas do not result essentially from the different thickness, but rather from different material structures, which will be explained further below.
  • the polyalkylene terephthalates are engineering plastics and are generally used where good dimensional stability and high creep resistance are required, but especially the good sliding and wear behavior is emphasized.
  • the following properties of the PETP are known. Depending on the processing conditions and the type of material, it can be in the amorphous-transparent or partially crystalline state (30% to 40 °. Crystallinity) because of the low crystallization rate. An amorphous structure occurs at tool temperatures up to a maximum of 40 ° C, and semi-crystalline structure occurs at higher tool temperatures. The degree of crystallization can be increased by nucleating agents.
  • PETPs on the market with fillers and reinforcing materials, such as with glass fibers and glass balls; Minerals, talc.
  • PETP is transparent in the amorphous state and opaque white in the semi-crystalline state.
  • Partially crystalline PETP has high hardness, rigidity and strength with good toughness down to -40 ° C. It exhibits good creep rupture behavior and low abrasion with favorable sliding properties.
  • PETP is provided with up to 30% glass fibers to increase strength, modulus of elasticity and creep rupture strength.
  • PETP semi-crystalline is very good heat resistant, can be used from -40 ° C to 100 ° C. In the amorphous Condition is the dimensional stability in the heat less.
  • the crystallite melting range of PETP is between 255 0 C to 258 ° C.
  • PETP is offered on the market as granules. It can be processed by injection molding.
  • melt temperatures from 260 ° C to 290 ° C and injection pressures from 1000 to 1700 bar. With glass fiber reinforcement, more favorable conditions can be set.
  • the tool temperatures should be from 30 ° C to 140 ° C, whereby amorphous types are to be processed at lower and semi-crystalline types at higher tool temperatures.
  • the orthopedic support parts according to the invention are produced by injection molding.
  • a glass fiber reinforced PETP is preferably used, which is produced by a mixture of a commercially available glass fiber-containing granulate with a commercially available glass fiber-free granulate. It is advantageous if the granules have grain sizes in the range from 1 to 5 mm, preferably from 2 to 3 mm.
  • the glass fiber content of the one granulate is 10 to 20% by weight, preferably about 15 wt .-%, the randomly arranged glass fibers should have a short length of 200 to 500 microns and a thickness of 1 to 2 microns.
  • a mixture of 2: 1 to 3: 1 glass fiber reinforced to unfilled PETP granules is preferably used.
  • a homogeneous melt is produced from the granulate mixture in an injection molding machine at 300 ° C to 360 ° C, which is pressed into the injection molding mold at over 1800, in particular about 1800 to 2200 bar.
  • the temperatures and pressures chosen according to the invention are therefore higher than normal.
  • the plastic melt is pressed into the injection mold through an opening from the midfoot head side.
  • the plastic mass that enters a cavity of relatively large cross-section flows very quickly into the narrowed zone of the heel area.
  • Different temp Materials in the heel and midfoot area of the injection mold result in different properties. This ensures that the material solidifies amorphously in the heel area and more or less crystallizes in the midfoot area, so that the desired elastic properties in the heel area and the desired rigidity in the midfoot area are established.
  • glass fiber-reinforced plastic material is used, care is taken to ensure that a considerable amount of filler material, namely glass fibers, does not penetrate into the heel region, so that a plastic with a lower glass fiber content is present in this zone.
  • the "glass fiber filtration" does not result from the narrowing of the heel area in the injection mold.
  • it is controlled by the different temperatures. For example, temperatures of 40 ° C. to 80 ° C. in the heel area and in the midfoot area of 80 ° C. to 110 ° C. are set in the injection molding tool during injection molding.
  • the properties of unreinforced PETP, as well as of reinforced PETP are achieved through the selection of certain melting temperatures and injection pressures and through the selection of certain zonal different solidification temperatures in the injection mold to provide the plastic in a one-piece support part, which are required there.
  • the properties range from resilient properties, e.g. in the thin heel area of a shoe insert, to dimensionally stable rigidity in the midfoot area, e.g. due to the thickness of the material and / or the solidification structure of the plastic and / or the degree of filling with glass fibers and / or the crystallinity of the plastic.
  • the one-piece shoe insert 1 shown is designed for insertion into the left shoe. It has a curved support area 2 for the midfoot and an integrally connected heel area 5.
  • the support area 2 is intended to support the outer longitudinal vault with its outer area 3 and the inner longitudinal vault of a foot with its inner area 4.
  • the support area 2 ends at the front behind the midfoot head of the foot, so that the insert does not support the entire foot, but only the midfoot and the heel.
  • the heel area 5 is thinner in material than the support area 2.
  • the plastic in the heel area is amorphous.
  • Another embodiment provides that e.g. 2 to 8 mm wide edge 6 is arranged in the outer edge region of the support part 2, which likewise consists of amorphous PETP, while the core region 7 is more or less crystalline. These differences are clearly recognizable, since the core area 7 is opaque and the core area 6, like the heel area 5, is glassy transparent.
  • a further embodiment of the invention provides that the crystalline core region 7 is coated on all sides by amorphous plastic, so that the surface of the shoe insert consists entirely of amorphous plastic.
  • the thickness of the casing is e.g. 0.5 to 2 mm.
  • the support area 2, in particular the core area 7, is glass-fiber reinforced, while the heel area 5 is glass-fiber-free or less glass-fiber.
  • the heel area has a glass fiber content that is up to 20% less by weight.
  • the heel area generally remaining unchanged.
  • the support area is heated up in its entirety or zonally and, for example, deformed by hand. After ver Forming and cooling, the support area 2 retains the new spatial shape.
  • the stiffness can remain unchanged. However, it can also be increased by the selected post-forming temperature by post-forming at relatively high temperatures, so that the crystallinity and, as a result, the rigidity are increased. It is particularly favorable that PETP, but in particular also glass fiber-reinforced PETP, can be deformed as often as desired without the required properties suffering.
  • the invention also makes it possible to mold a pad 8 in the midfoot arch region.
  • the orthopedic support part according to the invention in particular the shoe insert according to the invention, can be produced in one operation using the injection molding process. Because of the advantageous selection of materials, a combination of rigidity and elasticity in wide Be despite the one-piece design is - ensures rich. For subsequent adaptation of the support part to the body part to be supported, it is possible to change the shape and possibly also the rigidity by heating without losing the properties. Typed parts can thus be produced because any deformation is possible afterwards. This considerably simplifies production and warehousing.
  • PETP is also commercially available as a colored plastic. Support parts of different colors can therefore be produced.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
EP85112695A 1985-03-28 1985-10-07 Dispositif orthopédique de support, notamment insertion orthopédique pour chaussures et son procédé de fabrication Expired - Lifetime EP0198951B9 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85112695T ATE38766T1 (de) 1985-03-28 1985-10-07 Orthopaedisches stuetzteil, insbesondere orthopaedische schuheinlage, sowie verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8509263U DE8509263U1 (de) 1985-03-28 1985-03-28 Orthopädische Schuheinlage
DE8509263U 1985-03-28

Publications (4)

Publication Number Publication Date
EP0198951A2 true EP0198951A2 (fr) 1986-10-29
EP0198951A3 EP0198951A3 (en) 1987-05-20
EP0198951B1 EP0198951B1 (fr) 1988-11-23
EP0198951B9 EP0198951B9 (fr) 2003-05-28

Family

ID=6779296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112695A Expired - Lifetime EP0198951B9 (fr) 1985-03-28 1985-10-07 Dispositif orthopédique de support, notamment insertion orthopédique pour chaussures et son procédé de fabrication

Country Status (4)

Country Link
US (1) US4715131A (fr)
EP (1) EP0198951B9 (fr)
AT (1) ATE38766T1 (fr)
DE (2) DE8509263U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516874A1 (fr) * 1991-06-06 1992-12-09 Medical Materials Corporation Pièce utilisée pour le raidissement des chaussures
EP0893112A1 (fr) * 1997-07-23 1999-01-27 Globus Berkemann GmbH & Co. KG Support orthopédique
DE19857568A1 (de) * 1998-12-14 2000-06-15 Ofa Bamberg Otto Fankhaenel & Orthopädische Schuheinlage

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DE3804321A1 (de) * 1988-02-12 1989-08-24 Ova Gmbh Orthopaediebedarf Verfahren zur herstellung von prothetischen teilen aus faserverstaerktem kunststoff
US5001848A (en) * 1988-03-31 1991-03-26 Rikio Co., Ltd. Shoe insole
US5129395A (en) * 1989-08-18 1992-07-14 Hoffmann John A Shoe interior
US5345701A (en) * 1991-04-26 1994-09-13 Smith Leland R Adjustable orthotic
DE69214794T2 (de) * 1991-12-10 1997-02-20 Leland R Smith Orthotische einstellbare Einlage
US5603170A (en) * 1992-09-03 1997-02-18 Hiro International Co., Ltd. Fiber reinforced resin lift for shoes
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USD350017S (en) 1993-04-20 1994-08-30 Nike, Inc. Bladder for a shoe sole
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USD347106S (en) 1993-09-01 1994-05-24 Nike, Inc. Bladder element for a shoe sole
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USD347315S (en) 1993-09-01 1994-05-31 Nike, Inc. Bladder for a shoe sole
USD351277S (en) 1993-09-17 1994-10-11 Nike, Inc. Element of a shoe sole
USD351056S (en) 1993-09-17 1994-10-04 Nike, Inc. Bladder for a shoe sole
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US6023861A (en) * 1998-08-17 2000-02-15 Calzaturificio S.C.A.A.P.A. Spa Arch support for a sports shoe
DE19948545A1 (de) * 1999-10-08 2001-04-12 Globus Berkemann Gmbh & Co Kg Orthopädische Schuheinlage
ITPI20020047A1 (it) * 2002-08-23 2002-11-21 Intertech Di Giovanni Mastroma "sostegno sagomato per scarpe"
USD498577S1 (en) 2002-10-22 2004-11-23 Talar Made Orthotics, Ltd. Footwear insole
USD552838S1 (en) * 2004-07-06 2007-10-16 Talar Made Orthotics Limited Foot orthosis
US20060236564A1 (en) * 2005-04-22 2006-10-26 Cryos Technologies Inc. Orthotic with dynamically self-adjusting stabiliser for footwear
WO2008012809A2 (fr) * 2006-07-24 2008-01-31 Naalei Sof Haderech Ltd. Semelles orthopédiques adaptables
EP2111770B1 (fr) * 2008-04-25 2014-06-18 M. Christophe Otte Semelle pour chaussure ayant des propriétés amortissantes, chausson orthopédique et chaussure comportant une telle semelle.
US8291616B2 (en) * 2009-02-14 2012-10-23 Ljo, Inc. Insole having a transparent portion and a sock liner portion
CN104544726A (zh) * 2013-10-28 2015-04-29 文洪熙 矫正用鞋垫
NL2017512B1 (en) * 2016-09-22 2018-03-29 Nea Int Bv Ankle support
US20220117768A1 (en) * 2020-10-19 2022-04-21 Royal Manufacturing LLC Ankle brace with rear heel calcaneal stabilizing depression

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516874A1 (fr) * 1991-06-06 1992-12-09 Medical Materials Corporation Pièce utilisée pour le raidissement des chaussures
EP0893112A1 (fr) * 1997-07-23 1999-01-27 Globus Berkemann GmbH & Co. KG Support orthopédique
DE19857568A1 (de) * 1998-12-14 2000-06-15 Ofa Bamberg Otto Fankhaenel & Orthopädische Schuheinlage

Also Published As

Publication number Publication date
DE3566350D1 (en) 1988-12-29
EP0198951B9 (fr) 2003-05-28
US4715131A (en) 1987-12-29
ATE38766T1 (de) 1988-12-15
EP0198951A3 (en) 1987-05-20
EP0198951B1 (fr) 1988-11-23
DE8509263U1 (de) 1985-05-09

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