JPH08209409A - Shock-absorbing material for protecting from bone fracture and clothes attached with the material - Google Patents

Abstract

PURPOSE: To prepare clothes effective for preventing the bone fracture, especially the transcervical fracture caused by falling down by detachably attaching a protection tool for preventing the bone fracture to a proper position of the front body, the side part or the back waist around the waist. CONSTITUTION: A pocket 25 is attached to a proper position of the front body 22, the back waist 23 and the side part 24 around the waist part of clothes, especially an underwear such as briefs 21 by fixing the three circumferential sides of the pocket with sewing parts 28. A shock-absorbing material is put into the pocket through the top opening 30. The shock-absorbing material has a shock-absorbing ratio of >=50%, preferably >=60% and the material is preferably a silicone or a urethane-based gelatinous substance. It is especially useful for preventing the bone fracture of a patient of osteoporosis in the case of falling down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garment, in particular, a wearer's waist, which is attached to an appropriate part of the waist to prevent a fracture at the time of a fall.
In particular, the present invention relates to a shock-absorbing material for bone fracture protection that prevents bone fractures when a patient suffers from osteoporosis or the like, and to wear clothes, especially underwear such as pants.

[0002]

2. Description of the Related Art For example, as described in Japanese Utility Model Laid-Open No. 61-55008, Japanese Utility Model Laid-Open No. 5-37911, etc., for the purpose of preventing impact and scratches on the body during various sports, Clothes with protective equipment such as air bladders are found on each part of the clothes.

However, although the above-mentioned clothes in which protective equipment is directly attached to various parts are suitable for sports, they are not suitable for ordinary clothing, especially underwear, and are suitable for wearing protective equipment. I can't find my underwear. Also,
Recently, among the elderly, there is a tendency that the legs and hips become weak and the bones become brittle, and fractures due to falls, especially femoral neck fractures, are increasing.

For example, "THE JO issued in 1990
URNAL OF BONE AND JOINT S
URGERY VOL. 72-A, NO. 5 JUN
E. J. C. LOTZ AND W. C. HA
In the model experiment using the YES report, it is reported that a bone fractures when a force of about 778 Newton (about 79 Kgf) is applied. Furthermore, "Geria" issued in 1991
tric, Medicine ”VOL. 29 NO. In a research report by Yasushi Hayashi in No. 5, when osteoporosis progresses and the bone becomes brittle, the bone strength is reduced to about 42 to 79% of that of a healthy person. "Danish Me, published in 1992.
dical Bulletin ”VOL. 39 NO. 1 / Februar
Jes Bruun Laurizen & Vagn Aske in y
Gaard's report examined the physical differences between a patient with a hip fracture and a healthy person in the lower back. According to this report, there is a statistically significant difference in the thickness of the subcutaneous tissue covering the lumbar region, which shows that the body density of the body is the same and the fractured patient and a healthy person have the same density. Comparing the cases, the thickness of the subcutaneous tissue was 20 mm in the former case and 29 mm in the latter case, and it is reported that there was a considerable difference. Further, in the above report, the difference in shock absorption rate at the thicknesses of 20 mm and 29 mm was also measured using pig tissue having the same mechanical properties as human subcutaneous tissue.

[0005]

In view of the contents of these studies and the impact strength that can be expected from a fall or collision due to force majeure in daily life, the present inventors have proposed an impact absorbing material that absorbs 50% or more of external force. Therefore, it has been found that it is desirable to wear an impact absorbing material having a function of complementing the subcutaneous tissue around the waist of clothing, particularly underwear.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides pants in which protective devices for bone fracture are detachably provided on appropriate parts of the front body, armpits and rear body around the waist. Further, the present invention is suitable for such a protector, and has a shock absorption rate of 50% or more, which is mounted on the waist of a clothing for protecting bone fracture and the shock absorbing material for bone fracture protection. It is intended to provide clothes, especially pants, which is worn.

In the present invention, the shock absorption rate is a shock absorption rate measured by using a pendulum type device such as the measuring device shown in FIG. 1 attached hereto. That is, the apparatus shown in FIG. 1 includes an appropriately fixed strut 1, an arm 2 rotatably provided through a bearing 4 (for example, a pillow type bearing) provided on a protrusion 3 of the strut 1, a diameter of 24 mm (thigh). The impactor 5 has a hemispherical shape (assuming the size of the parietal bone of the bone and neck). The impactor 5 is fixed to the lower end of the arm 2, and a stopper 6 is appropriately attached to and detached from the lower part of the arm 2. When the arm 2 is rotated, the stopper 6 is removed. A slide shaft 8 attached to a pressure gauge (a load cell; in the following examples, a load cell of product number LUB-100KB manufactured by Kyowa Denki Co., Ltd.) was inserted into the support column 1, and the tip of the slide shaft 8 was inserted. Has a thickness of 5 mm and a diameter of 75 m
A disc-shaped fixing plate 9 made of, for example, a steel plate is fixed. The pressure gauge 7 is connected to an output section (in the following examples, a conditioner for instrumentation of a product number WGA-710A-3 type manufactured by Kyowa Denki Co., Ltd. was used) 10 was connected, and the impact strain by the pressure gauge 7 was amplified. To do.

A shock absorbing material 11 such as a cloth is attached to the fixing plate 9.
Attach. As a method, assuming that a shock absorbing material is actually attached to clothes, a bag-shaped knitted fabric 15 (cotton yarn 40 count single yarn is used and the number of upper and lower needles is 960 each as shown in FIG. 2). , Knitted by a knitting machine made by Gunze Co., Ltd. with a diameter of 17 inches to make a milling knitted fabric, appropriately cut and sewn into a rectangular bag-like fabric)
The shock absorber 11 is housed inside, and the upper end portion of the bag-shaped knitted fabric 15 is appropriately bound or locked with a button or the like, and then the knitted fabric 15 containing the shock absorbing material 11 is attached via a double-sided adhesive tape 12, for example. Is affixed to the fixing plate 9 and fixed.

The impact absorption rate is measured by setting the total weight of the arm 2 and the impactor 5 to 2.5 Kg, and in a state in which nothing is attached to the fixed plate 9, the swing width of the arm 2 is adjusted so that the impact load becomes 90 Kgf. To set.

A shock absorbing material 11 is contained in a bag-shaped knitted fabric 15.
Is stored and attached to the fixed plate 9, and the shock absorption rate Y when the shock load when measured is X is calculated according to the equation (1).

## EQU1 ## Y = {(90-X) / 90} × 100 (%)

Only the bag-shaped knitted fabric 15 is fixed to the fixing plate 9
When the impact load is measured in the state of being attached to the bag, the impact load is almost 0. Therefore, even if the impact absorber 11 is stored in the bag-shaped knitted fabric 15 and the impact load is measured, The influence of the cloth 15 on the impact load can be almost ignored.

The shock absorbing material of the present invention is not particularly limited as long as it has a shock absorbing rate of 50% or more, preferably 60% or more. Even if it is a single material, it may be the same or different. A plurality of materials may be overlapped or combined. Examples of such materials include polymer foams such as polyethylene, polyurethane and polystyrene, and polyurethane-based high damping rubber, natural rubber,
Examples thereof include various rubbers such as silicone rubber and ethylene propylene rubber, foams of rubber, and elastic bodies such as thermoplastic elastomers such as styrene and propylene.

The foam may be produced by a known method, and examples thereof include a method of using a volatile gas during the chemical reaction, a method of mixing a foaming agent, and a method of foaming during stirring. For example, a polyethylene foam is produced by mixing a foaming agent such as a sulfonic acid hydrazide compound, extruding it into a sheet, and then heat-foaming. In addition to the above, examples of the foaming agent include azo, diazo compounds and freon-based compounds. The urethane type is produced by a reaction between an alcohol group (polyol) and an isocyanate group.

Other than the above, examples of the impact absorbing material of the present invention include a non-woven fabric by a needle punch method and a non-woven fabric having a high bulkiness. The non-woven fabric rich in bulkiness is, for example, a non-woven fabric manufactured by a hydroentangling method in which a jet water stream is applied to a web to entangle fibers.
The finished non-woven fabric is extremely rich in bulkiness and flexibility. In addition, for example, a quilted fabric in which these non-woven fabrics are sandwiched between two fabrics and subjected to a quilting process, a porous material having an air layer inside such as a porous fluororesin, and a bulky processed yarn. Also included are woven and woven bulky fabrics, air cushion bodies made of synthetic resin films containing air or various gases.

The shock absorbing material of the present invention is preferably a gel material of silicone type or urethane type, for example. As the gel-like substance, the penetration degree (according to the petroleum asphalt penetration degree test method (JIS2207); 5
It is preferable that the hardness (0 g load) is in the range of 50 to 200, or that the hardness by a rubber hardness meter (A hardness meter) is in the range of 0 to 90 degrees. The gel-like substance is a mixture of fine hollow spheres in the gel-like substance, or an inorganic filler such as calcium silicate, aluminum silicate, alumina, silica or an organic filler such as aramid fiber. By increasing the internal damping with respect to the impact, the resonance magnification can be suppressed low and the impact resilience can be imparted, and as a result, the impact absorption rate can be increased. The hollow sphere includes an inorganic type and an organic type, and the inorganic type has a diameter of 5 to 300 μm.
Examples of the hollow spheres made of glass include organic spheres having a shell of a copolymer of vinylidene chloride / acrylonitrile and isobutane encapsulated or encapsulated therein.

Further, a plurality of different kinds of materials are superposed,
Multi-layered shock absorbers are also preferred. For example, a hard material having an appropriate thickness and a hardness of 5 to 70 is used as an outer layer, and a hardness of 0 to
Examples include a two-layer structure having 30 soft materials as an inner layer, and a three-layer structure in which a soft material is sandwiched by hard materials.

The size (area) of the impact absorbing material of the present invention is not particularly limited, but it is 1 cm ^{2 to} 600 cm ² ,
Preferably in the range of 10cm ² ~400cm ^2. The shape may be any shape such as a square, a rectangle, a circle, an ellipse, a polygon such as a rhombus, and a strip, and may be colored, have a pattern such as unevenness on the surface, or have an opening. Breathability may be improved.

The thickness of the impact absorbing material of the present invention may be such that the impact absorption rate is 50% or more, and is, for example, 0.1 mm or more, preferably the partial thickness when worn on clothes. To avoid wearing, keep 0.1
It is about 50 mm.

The shock absorbing material of the present invention can be attached to various kinds of clothes such as pants and skirts that are worn daily, as well as waist supporters and abdomen, and in particular, knits such as briefs, shorts, and monkey crotch. It is suitable to wear it on underwear such as pants made of cloth or cloth. The impact absorbing material may be fixedly or removably attached to any one or more places such as the entire circumference of the waist of the garment or the front body, the side part and the back body, and the mounting method itself is not particularly limited. Not a thing. For example, the shock absorbing material can be struck on the place of attachment through a pocket or the like, and may be sewn onto clothing. Further, it may be detachably attached via a surface fastener. The use of adhesives is also possible. The material for forming these clothes, pockets, etc. is not particularly limited, and stretchable or non-stretchable fabric woven or woven with natural fibers, synthetic fibers or the like can be used.

[0020]

The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. Example 1 A thickness of 10 [beta] gel (trade name), which is a silicone gel-like substance mixed with micro hollow spheres manufactured by Siegel Co., Ltd.
The thickness was adjusted to mm to obtain a shock absorber. A hardness is 0
Met. Table 1 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 2 Nonwoven fabric made of cotton (manufactured by Nisshin Spinning Co., Ltd. (bulky nonwoven fabric obtained by jetting a jet stream of water onto a web made of spun yarn)) "Oikos" (trade name) (unit weight: 200 g / m ² ).
Were piled up to a thickness of 5 mm to obtain a shock absorbing material. The hardness measured by the A hardness tester was 24. Table 1 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 3 Six shock absorbing materials were obtained by stacking 6 sheets of the non-woven fabric of Example 2 to a thickness of 10 mm. The hardness by A hardness tester was 17. Table 1 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 4 Polyethylene foam "Toray Pef" manufactured by Toray Industries, Inc.
A (commercial name) (Grade 30060, 30 times foam) was made to have a thickness of 10 mm to obtain a shock absorbing material. The hardness measured by the A hardness tester was 3. The shock absorbing material is formed into a bag-shaped knitted fabric 15
Table 1 shows the results of measuring the impact absorption rate after storing the sample inside.

Example 5 A shock absorbing material was obtained by changing the thickness of a fluorocarbon resin porous body (containing a large number of air layers) "VALQUA SEAL" (trade name) manufactured by Nippon Bulker Co., Ltd. to 10 mm. The hardness by A hardness meter was 33. The shock absorbing material is a bag-shaped knitted fabric 1
Table 1 shows the results of measuring the impact absorption rate by storing it in the No. 5 container.

[0025]

[Table 1]

Example 6 In the same manner as in Example 1, a shock absorbing material was obtained with a thickness of 5 mm of "β gel" (trade name), which is a silicone gel material manufactured by Siegel Co., Ltd. The hardness by A hardness tester was 0. Table 2 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 7 A silicone gel type substance “β gel” (trade name) manufactured by Siegel Co., Ltd. was coated on the front and back surfaces with a vinyl chloride film (film thickness 0.1 mm) to a thickness of 5 mm. A shock absorber was obtained. The hardness by A hardness tester was 17. Table 2 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 8 Silicone gel-like substance "β gel" (trade name) manufactured by Siegel Co., Ltd. was coated on the front and back surfaces with a polyurethane film (film thickness 0.1 mm) to a thickness of 5 mm. A shock absorber was obtained. The hardness determined by the A hardness tester was 1. Table 2 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 9 "γ-gel" (trade name), which is a silicone gel material manufactured by Siegel Co., Ltd., mixed with an inorganic filler, has a thickness of 5
The thickness was adjusted to mm to obtain a shock absorber. A hardness is 0
Met. Table 2 shows the results of measuring the shock absorption rate by storing the shock absorbing material in the bag-shaped knitted fabric 15.

Example 10 As the outer layer, a polyethylene foam "Toraypefu" (trade name) (grade 05030, 5 times foam) manufactured by Toray Industries, Inc. having a thickness of 3 mm and a hardness of 57 according to A hardness tester was used, and this was used as an inner layer. "Β gel" made by Siegel Co., Ltd. with a thickness of 5 mm and a hardness of 0 by A hardness tester
Laminated with a rubber adhesive (product name: KE42T),
A two-layer shock absorber having a total thickness of 8 mm was obtained. The results of measuring the impact absorption rate by directly adhering the impact absorbing material to the fixing plate 9 are shown in Table 2.

[0031]

[Table 2]

Comparative Example A soft polyurethane (apparent specific gravity of 0.022 g / cm ³ ) used in the ass pad made by ASICS Co., Ltd. was made into a bag-shaped knitted fabric 15 with a thickness of 10 mm,
The impact absorption rate was measured and found to be 16.5%.

An example of pants with the impact absorbing material of the present invention will be described below with reference to FIGS. 3 to 8. 3 and 4 show an example of pants in which pockets for storing shock absorbers are provided on both waists. Pants 21 made of cotton knitted fabric or cotton fabric have front body 22, back body 23, and armpits. It is composed of a part 24 and pockets 25 on both sides. Each of the pockets 25 is provided on the outer surface of the pants 21 from the side part 24 to the buttocks 26 of the back body 23, and the three peripheral parts are fixed by the sewn parts 28. The shock absorbing material 11 is accommodated in the pocket 25 through the upper opening 30 of the pocket 25, and is attached so that the upper opening 30 is closed, for example, by an openable fastener (not shown). .

As the material forming the pocket 25, for example, a knitted cloth or a warp knitted cloth having a high elasticity, a net cloth having a high elasticity, a knitted cloth or a woven material having a high elasticity, It is preferable to use a cloth that can securely store and hold the shock absorbing material 11.

The pocket 25 has the sewn portion 28 as described above.
It may be fixed to the pants 21 by means of, for example, instead of sewing, for example, a sheet fastener is provided in the pants 21 and the pocket 25 at appropriate places, and the pocket 25 is inserted through the sheet fastener. It may be fixed to the side. Alternatively, the stretchable knitted fabric may be formed into a bag shape, and the bag containing the absorbent 11 may be sewn around the entire circumference.

FIGS. 5 and 6 show an example of pants in which a shock absorbing material is attached to the entire circumference of the waist.
That is, the split type pockets 25 are provided on the outer peripheral surfaces of the front body 22, the side portions 24, and the rear body 23. The impact absorbing material 11 is similar to that shown in FIGS.
5 is accommodated in the pocket 25 through the upper opening 30, and the upper opening 30 is attached so as to be closed through, for example, an openable fastener (not shown).
Alternatively, the shock absorber may be stored in a pocket bag made of knitted fabric and the entire circumference of the bag may be sewn directly to the pants.

FIG. 7 and FIG. 8 show an example of pants fitted with a strip-shaped shock absorbing material.
It is composed of a back body 23, side portions 24, and pockets 25 on both sides. A surface fastener is attached to the back side of each pocket 25, and the pocket 25 is provided from the side part 24 to the buttocks 26 part of the back body 23 through means such as sewing or bonding. Surface fastener 20
It is detachably attached via. Shock absorber 11
Is formed in a strip shape, and a large number of strip-shaped shock absorbers 11 are stored in the pocket 25 in a strip shape, or
Alternatively, the strip-shaped shock absorbers 11 are integrally connected to each other by means such as adhering or sewing to each other to form the pocket 25.
It may be housed inside. The upper opening 30 of the pocket 25 may be closed, for example, via a fastener (not shown) that can be opened and closed. Alternatively, shock absorbers can be worn directly on the pants without a pocket, by attaching a hook-and-loop fastener to the back of the shock absorber, or by storing the shock absorber in a knitted fabric bag. The entire circumference of the bag may be sewn directly to the pants.

In the case where the shock absorbing material of the present invention is attached to the pants as described above, the impact absorbing material is attached at a position centered on the femoral neck, specifically, so as to cover the portion centering on the top bone of the femur. Although it is preferable, it may be provided on the entire circumference of the waist, such as the front body and the back body, in addition to the position centered on the femoral neck.

[0039]

When the impact absorbing material of the present invention is used,
Even if the elderly person falls forward or backward, or falls in any direction such as the left side or the right side while walking, the impact absorbing material provided on the clothes allows the waist circumference, that is, the front body part, the side part, the back part and the buttocks. Is protected, and the effect of preventing fractures of the femoral neck can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a shock absorption rate measuring device.

FIG. 2 is a cross-sectional view of a bag containing a shock absorbing material, which is used for measuring a shock absorption rate using the measuring device of FIG.

FIG. 3 is a front perspective view of the pants to which the shock absorbing material of the present invention is detachably attached.

FIG. 4 is a rear perspective view of the pants to which the shock absorbing material of the present invention is detachably attached.

FIG. 5 is a front side perspective view of the pants to which the shock absorbing material of the present invention is detachably attached.

FIG. 6 is a rear side perspective view of pants on which the shock absorbing material of the present invention is detachably attached.

FIG. 7 is a front side perspective view of the pants to which the shock absorbing material of the present invention is detachably attached.

FIG. 8 is a rear side perspective view of the pants to which the shock absorbing material of the present invention is detachably attached.

[Explanation of reference numerals] 11 ... shock absorber 21 ... pants 22 ... front body 23 ... rear body 24 ... side part 25 ... shock absorber storage pocket 26 ... buttock

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rika Owatari 262 Sou Sou Miyazu, Kyoto Gunze Co., Ltd. Apparel Business Division

Claims (7)

[Claims] 1. Pants in which protective equipment for bone fracture protection is detachably provided on appropriate parts of the waist, such as the front body, the side parts and the back body. 2. A shock-absorbing material for protecting a fracture, which is worn around the waist of a garment, which has a shock absorption rate of 50% or more. 3. The shock absorbing material for fracture protection according to claim 2, wherein the shock absorbing material is made of a gel material. 4. The shock absorbing material has a multilayer structure.
The shock absorbing material for bone fracture protection described. 5. A garment in which the impact absorbing material for fracture protection according to any one of claims 2 to 4 is worn around the waist. 6. The garment according to claim 5, which is underwear. 7. The garment according to claim 6, which is pants.