CN2796454Y - Shoe pads - Google Patents
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- CN2796454Y CN2796454Y CN 200420120432 CN200420120432U CN2796454Y CN 2796454 Y CN2796454 Y CN 2796454Y CN 200420120432 CN200420120432 CN 200420120432 CN 200420120432 U CN200420120432 U CN 200420120432U CN 2796454 Y CN2796454 Y CN 2796454Y
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Abstract
The utility model provides a pair of shoe pads which can be used for lightening sole pressure and shear stress of a glucosuria patient, the feet of which are anabrotic. Each shoe pad of the utility model comprises a bottom layer which is made of multi-micropore poron or soft EVA (ethylene/vinyl Acetate) and can be used for adsorbing the vibration and reducing the shear stress, a middle layer which is made of polyethylene non-porous plastazote or cushioned polymergel and can be used for adsorbing the direct sole pressure and reducing the shear stress, and an upper layer which is made of closed cell neoprene; each shoe pad is formed by the laminated combination of the bottom layer, the middle layer and the upper layer, and each layer is provided with a plurality of small holes which are uniformly distributed. The shoe pads of the utility model can be matched with shoes or removable gypsum moulding walking devices for use, the effect of the utility model can match that of a full contact gypsum moulding method, and the utility model has a better effect on removing the pressure loads of the heels.
Description
Technical field
The utility model relates to a kind of shoe-pad, particularly a kind of shoe-pad that alleviates plantar pressure and shear stress for the diabetic of foot ulcers.
Background technology
The U.S. have 1,600 ten thousand or 5.9% the people that surpasses population suffer from diabetes.Many people are when one of its major complications occurring, just learn and oneself suffer from diabetes.These complication comprise blind, heart disease, peripheral vascular diseases, and foot paralysis or DPN.The healing that the hyperglycaemia value also can influence the circulatory system of health and slow down wound.
In the U.S., diabetes foot complication is the common cause of non-wound amputation.Diabetic's amputation risk exceeds 15-46 doubly than the normal person, and diabetes foot complication mainly starts from the skin ulcer in vola.
The one of the main reasons of diabetic ulcer is the increase of plantar pressure, particularly, and the forward foot in a step and calcaneal zone.The diabetic, the foot pathology is quite common, and this will cause the accumulation point of high pressure.When the unusual accumulation point of pressure combines with the shortage of sensation, may cause foot ulcers.Therefore, remove the key factor that the plantar pressure load is the treatment diabetic foot ulcers.
Technology and device that many available removal plantar pressure loads are arranged, according to the position on the anatomy of wound, these technology and device all have its special application.The device of the removal load that can use for bed (non-ambulatory) sufferer comprises soft cushioning and the wheelchair and the heel protective device of air bed, bed; as polygonal boots (multipodus boot), it can make limbs unsettled and remove the pressure of problem area fully.
At the patients with amputation that ulcer of sole is arranged, the device of the most basic removal load is a kind of comprehensive engagement gypsum molding method (total contact cast), and it can bear a heavy burden foot and shift, and weight is distributed to shank again.The operation of the removal load of removable formula gypsum molding walking devices (removable cast walker device) is identical with comprehensive engagement gypsum molding method, but is easilier accepted by sufferer, because of its taking a shower or daily wound when taking care of, can remove.Other can remove load but less-than-ideal device comprises a kind of half footwear (half-shoe) (or being called wedge shoes (wedge shoe)), has postoperative (postoperative)/operation (surgical) footwear of malleable cushion course (softaccommodative padding layer).During one clinical research is reported at random,, compared comprehensive engagement gypsum molding method, removable formula gypsum molding walking devices at the neuropathic foot ulcers of diabetic's rear heel, and the effect of half footwear.With other two kinds compare, the patient of comprehensive engagement gypsum molding piece group, significantly high (the comprehensive engagement gypsum molding piece group 89.5% of the ratio of recovery from illness in 12 weeks, removable formula gypsum molding walking devices group 65%, half footwear group 58.3%) (Off-loading the diabetic foot wound:a randomized clinical trial, DiabetesCare 2001 Nov; 24 (11): 2016).
United States Patent (USP) 5,197, No. 942 (Brady) disclose a kind of wearable foot protector with injury aperture (wound aperture) (wearable foot orthoses) of removing the plantar pressure load when the patient walks about.Yet major part has patient's foot of foot ulcers insensitive, and the hard protector may produce other ulcer of sole.
United States Patent (USP) 5,329, No. 705 (Grim) disclose a kind of lattice that remove of the resilient hexagon device of removable formula of being located at shoe-pad of removing the plantar pressure load.Yet this kind device can be transferred to the peak value plantar pressure foot other parts subsequently.In addition, when utilizing aperture that pressure is reduced (hexagonal removable device), be subjected to other pressure near will making edge of wound, near wound, produce more skin injuries (undermining) and callosity (being commonly called as cocoon) (calluses) subsequently.
United States Patent (USP) 5,483, No. 757 (Frykberg) disclose a kind of for making the foot breathing have the shoe-pad of the aperture of preferable multiple even distribution extension.Its main purpose that is provided with the limited aperture of number is the air circulation for shoe-pad, and the design of these apertures is for reducing plantar pressure also to no effect.
United States Patent (USP) 5,797,862 and 6,083, No. 185 (Lamont) discloses a kind of diabetes with boots and shoe-pad, it is made up of the polyethylene atresia foam (plastazote) on upper strata and many micropores chemical combination pad (poron) material of lower floor, and laminated with metatarsal that adds and nut bone liner, in order to remove the plantar pressure load.This kind material is commercially available commodity in blocks, can be fit to the size of footwear or boots through cutting.Yet it does not have yet as the ability of removal plantar pressure of the present utility model load (seeing also following test).
Summary of the invention
Main purpose of the present utility model is to provide a kind of new shoe-pad design, and it can significantly reduce the forward foot in a step and calcaneal plantar pressure, can be used as diabetes are used footwear and removable formula gypsum molding walking devices with footwear, treating diabetes shoe-pad substituent.
But the novel shoe-pad of this kind with absorbing vibration and can reduce many micropores chemical combination pad (poron) of shear stress composition or soft EVA (ethylene-vinyl acetate copolymer) as bottom, the polymeric colloid of polyethylene atresia foam or cushion shape (cushioned polymer gel) is as the middle level, and closed born of the same parents' shape neoprene (closed cellneoprene) covers as the upper strata.These materials are commercially available plate goods.
Compare major advantage of the present utility model and unique being in spreading all over the aperture that whole sole evenly is provided with other existing shoe-pad.These apertures can significantly reduce plantar pressure that directly bears when bearing a heavy burden and the shear stress that dynamically is applied to the vola.When build-up of pressure point, these apertures can twist or extend to the pressurized direction and make this insole material distortion or crooked, cause the reduction of plantar pressure and relevant shear stress.So also can eliminate the problem of any pressure transfer that on other shoe-pad, is met with.Removing pressure also can make insole material return back to reset condition.
Therefore, these apertures can significantly reduce dynamic directly plantar pressure and shear stress.
This shoe-pad also can be used to remove the plantar pressure load of rheumatic arthritis patient foot disability, and this type of patient is owing to vola fat pad atrophy (plantar fat pads atrophy) has the bone protrusion.
When this novel shoe-pad and footwear or removable formula gypsum molding walking devices use jointly, can replace comprehensive engagement gypsum molding method, and said apparatus is the device that is used for the treatment of the most basic removal load of diabetic foot ulcers.
Description of drawings
Fig. 1 is the top view of right shoe-pad;
Fig. 2 is the side high-level schematic of right shoe-pad;
Fig. 3 is the right shoe-pad generalized section along Fig. 1 line A-A;
Fig. 4 is the a-quadrant of the top view of right shoe-pad, and it shows the shoe-pad that does not bear a heavy burden;
Fig. 5 is the a-quadrant of the top view of right shoe-pad, and it shows the heavy burden shoe-pad of build-up of pressure point;
When Fig. 6 is heavy burden, the generalized section of the a-quadrant of B-B along the line.
The specific embodiment
The shoe-pad of the diabetic's of being used for foot ulcers removal load of the present utility model is made up of the shoe-pad of absorbing vibration component layer, the aperture that its utilization spreads all over shoe-pad and evenly is provided with, and have the additional capabilities that reduces vola surge pressure and vola skin shear stress.See also Fig. 1,2,3.
The main shape of this shoe-pad can be sufficient type, can be the shape of shoe-pad, or the profile of used after operation footwear or removable formula gypsum molding walking devices.
Its primer is soft EVA, and thickness is 1/4 inch to 1/2 inch, has good shock absorbing effect, can bear direct bump, and have high resiliency.
Middle layer material can be the pink polyethylene atresia foam (pinkplastazote) of 1/4 inch to 3/8 inch of thickness or the polymeric colloid of cushion shape, and main purpose is to absorb direct plantar pressure, and reduces shear stress.
Upper layer of material is closed born of the same parents' shape neoprene of 1/2 inch to 1 inch of thickness.These materials all can be in commercial acquisition.See also Fig. 2.
The reduction of main shear stress realizes by the middle level, because it is between bottom and upper strata, when being subjected to force direction parallel with shoe insole surface or when parallel, thereby it has elasticity slidably or bending.
The reduction of other plantar pressure and shear stress is to be realized by the aperture that is dispersed evenly to these all each layers of shoe-pad, and these apertures are that the mode with boring or punching is arranged at each layer.Needs that these apertures can bear a heavy burden according to difference and in size or change to some extent in shape, and need at a distance of at least 1/4 inch to 1 inch to each other.There is no particular restriction for the shape of aperture, can be circle, square, ellipse, hexagon, octagon, or a side surface has the shape that has big circle/octagon diameter than small circular/octagon diameter and on the opposite side surface.
Fig. 4 shows that aperture is in lax or the shape of weighted position not.
Fig. 5 and Fig. 6 show that when build-up of pressure point aperture can or stretch to the pressure direction distortion, can make insole material twist or bending, thereby cause the reduction of plantar pressure and relevant shear stress.Removing pressure will make insole material return back to reset condition.Therefore, these apertures can significantly reduce other dynamically direct plantar pressure and shear stress.
The sole pressure test result of different shoe-pads
We carry out a research with following each group, and the plantar pressure under front foot (medial forefoot) and the heel in measuring.
1. common operation footwear (plain surgical shoe) (no shoe-pad).
2. thickness is the laminated shoe-pad of 1/4 inch pink polyethylene atresia foam and 1/8 inch PPT.This is the general insole material of diabetic with footwear.
Thickness be 1/4 inch soft EVA as bottom, 1/4 inch pink polyethylene atresia foam is as the middle level, with 1/8 inch Si Pengke (Spenco) the shoe-pad laminated shoe-pad as the upper strata.A kind of no aperture, another kind has 3/16 inch boring, and it spreads all over all layers of shoe-pad and evenly disposes with 1/2 inch distance.
(TekScan, South Boston MA) measure plantar pressure with F-scanning footwear internal pressure measuring system.This test is with a female individual, and weight is 135 pounds (61.23 kilograms) dress or does not put on and state shoe-pad that walking speed is that 1.5mph (0.67056m/s) carries out single test.Collected tabulation of date is as follows:
| Common operation footwear (no shoe-pad) | Pressure |
| Pressure under the middle front foot | 15psi(10.35N/cm 2) |
| Pressure under the heel | 20psi(13.8N/cm 2) |
The shoe-pad of operation footwear and PPT and pink polyethylene atresia foam
| No. 1 shoe-pad | Pressure (no aperture) |
| Pressure under the middle front foot | 14psi(9.66N/cm 2) |
| Pressure under the heel | 18psi(12.42N/cm 2) |
Operation footwear and thickness be 1/4 inch soft EVA as bottom, 1/4 inch pink polyethylene atresia foam is as the middle level, with 1/8 inch the Si Pengke shoe-pad shoe-pad as the upper strata
| No. 2 shoe-pads | Pressure (no aperture) | Pressure (aperture is arranged) |
| Pressure under the middle front foot | 13psi(9.66N/cm 2) | 10psi(6.9N/cm 2) |
| Pressure under the heel | 17psi(12.42N/cm 2) | 15psi(10.35N/cm 2) |
As above shown in the table, use shoe-pad can further reduce the peak value plantar pressure with even configuration aperture.
(Diabetes Care 19 (8): 818-821 at " Reducing dynamic Foot Pressures in High-risk DiabeticSubjects With Foot Ulcerations " for people such as Lavery LA, 1996) point out in the similar research, comprehensive engagement gypsum molding method, DH pressure is removed and is helped step frame (Pressure ReliefWalker) (Royce Medical, Camarillo, CA), Chinese mugwort volume Karst is filled the air diabetic and is helped step frame (Aircast Pneumatic Diabetic Walker) (Aircast, Summit, NJ) and the average peak pressure at the ulcer place of additional depth footwear (Extra Depth Shoe) under first metatarsal bone be respectively 7N/cm
2, 8N/cm
2, 12.3N/cm
2, and 39.5N/cm
2
Another by people such as Armstrong DG at " Total Contact Casts and Removable CastWalkers " (J.Am.Podiatric Medical Association 89 (1): 50-53,1999) point out in the research that comprehensive engagement gypsum molding method, the releasing of DH pressure help step frame, Chinese mugwort volume Karst to fill the air diabetic and help step frame and PW additional depth footwear (PW Minor Extra Depth Shoe) (PW Minor andSon that reins in advanced in years, Batavia, peak value vola rear heel pressure NY) is respectively 18N/cm
2, 19N/cm
2, 20N/cm
2, and 25N/cm
2
Compare with above-mentioned research about the peak value plantar pressure under middle front foot and the vola heel, there is no substantial difference between the utility model shoe-pad and comprehensive engagement gypsum molding method, aspect the removal pressure load of middle front foot, it is for removing golden standard (the goldstandard) (9.6N/cm of patient of diabetes ulcer of sole pressure load
2To 7N/cm
2).Yet new shoe-pad of the present utility model aspect the calcaneal pressure load in removal vola, has better effect (10.35N/cm
2To 18N/cm
2).
Claims (6)
1. shoe-pad, its patient of diabetes that can be foot ulcers alleviates plantar pressure and shear stress, it is characterized in that comprising:
Bottom, its composition are many micropores chemical combination pad or soft EVA, but absorbing vibration also can reduce shear stress;
Middle level, its composition are the polymeric colloid of polyethylene atresia foam or cushion shape, can absorb direct plantar pressure, and reduce shear stress; And
Upper strata, its composition are the neoprene of closed born of the same parents' shape;
This shoe-pad forms by this bottom, middle level and upper strata are laminated, and this each layer is equipped with a plurality of apertures of uniformly dispersing.
2. shoe-pad as claimed in claim 1 is characterized in that the spacing of described aperture is at least 1/4 to 1 inch.
3. shoe-pad as claimed in claim 1, the shape that it is characterized in that described aperture are selected from circle, square, ellipse, hexagon, octagon and a side surface and have the group that the shape that has big circle/octagon diameter than small circular/octagon diameter and on the opposite side surface is formed.
4. shoe-pad as claimed in claim 1 is characterized in that described underlayer thickness is 1/4 inch to 1/2 inch.
5. shoe-pad as claimed in claim 1 is characterized in that described middle level thickness is 1/4 inch to 3/8 inch.
6. shoe-pad as claimed in claim 1 is characterized in that described upper thickness is 1/2 inch to 1 inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120432 CN2796454Y (en) | 2004-12-17 | 2004-12-17 | Shoe pads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420120432 CN2796454Y (en) | 2004-12-17 | 2004-12-17 | Shoe pads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2796454Y true CN2796454Y (en) | 2006-07-19 |
Family
ID=36867695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420120432 Expired - Fee Related CN2796454Y (en) | 2004-12-17 | 2004-12-17 | Shoe pads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2796454Y (en) |
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| CN103085262A (en) * | 2013-01-24 | 2013-05-08 | 陕西科技大学 | Method for fabricating customized insole |
| CN103976506A (en) * | 2013-02-13 | 2014-08-13 | 阿迪达斯股份公司 | Sole for a shoe |
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| USD783264S1 (en) | 2015-09-15 | 2017-04-11 | Adidas Ag | Shoe |
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| US9968157B2 (en) | 2013-02-13 | 2018-05-15 | Adidas Ag | Sole for a shoe |
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2004
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| USD828686S1 (en) | 2015-09-15 | 2018-09-18 | Adidas Ag | Shoe |
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| USD889810S1 (en) | 2015-09-15 | 2020-07-14 | Adidas Ag | Shoe |
| USD840137S1 (en) | 2016-08-03 | 2019-02-12 | Adidas Ag | Shoe midsole |
| USD840136S1 (en) | 2016-08-03 | 2019-02-12 | Adidas Ag | Shoe midsole |
| USD925179S1 (en) | 2016-08-17 | 2021-07-20 | Adidas Ag | Shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |