JP2005230137A - Cushion body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cushion body suited for use preventing or mitigating a bedsore, deforming following the shape of a body, having a heat dissipating property, is sanitary enough to remove bacteria on the surface of the cushion body. <P>SOLUTION: The cushion body stores an inner bag filled with foamed resin particles in an outer bag. The outer bag is formed of a stretch cloth and the inner bag is a cushion body having a metal film formed at least on a part of its surface. The outer bag of the cushion body is formed of a moisture permeable, waterproof cloth. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cushion body that moderately supports the body, and more particularly to a cushion body that can be suitably used for pressure ulcer prevention or for pressure ulcer patients.

  Conventionally, there are persons who are bedridden among the physically handicapped and the elderly. There are many people who cannot change their sleeping posture so that they cannot turn over on their own. Furthermore, there are even physically disabled people who cannot move even their limbs. Such a person who cannot move himself / herself tends to concentrate his / her own weight on a certain part of the body. If the weight of the body is left for a long period of time, blood vessels in the skin tissue are compressed, resulting in pressure ulcers that destroy the skin tissue. It will lead to destruction and then to destruction of bone tissue.

In order to prevent or alleviate this pressure ulcer, place a cushion body between the pressure ulcer occurrence site or a body part that may occur and the body support surface such as the floor or between closely contacting body parts. To relieve the pressure on the blood vessels in the skin tissue. A cushion body that deforms according to the shape of the body can support the body part without concentrating its own weight on a certain part of the body and relieve pressure on the blood vessels in the skin tissue. It can be said. An example of a cushion body that performs deformation according to such body shape is disclosed in Patent Document 1.
Japanese Utility Model Publication No. 56-115966

  The cushion body described in Patent Document 1 is a cushion body in which foamed resin particles are accommodated in a bag formed of cloth or the like, and the foamed resin particles accommodated when the cushion body is used flow according to the body shape. By this, the deformation of the cushion body according to the body shape is realized.

  However, in order to prevent and relieve pressure ulcers, in addition to relieving the pressure of blood vessels in skin tissue, it is necessary to prevent the body surface from becoming moist and to have excellent hygiene. However, since the cushion body described in Patent Document 1 uses a low thermal conductivity foamed resin, heat easily accumulates inside the cushion body, and as a result of heat accumulation in the cushion body, the user's It facilitates sweating and makes the body surface moist. If sweat, body fluid, medicine, etc. adhere to the cushion body surface and leave it, the bacteria will grow on the surface, and the cushion body should be kept under high temperature to prevent the affected pressure ulcer from being infected. If an attempt is made to sterilize the bacteria propagated in the above, the foamed resin inside the cushion body will be melted or softened, so that the cushion body cannot be used continuously while ensuring hygiene.

  As described above, the cushion body having the configuration described in Patent Document 1 can be used as a cushion body used for pressure ulcer prevention and the like in order to realize deformation according to the body shape, but temporarily. In the case of use, the body surface can only be kept moist and hygienic.

  In view of the circumstances as described above, the present invention is a cushion body that can be continuously used as a pressure ulcer tool used for the prevention and alleviation of pressure ulcers, and only needs to be deformed according to the body shape. An object of the present invention is to provide a cushion body having excellent heat dissipation characteristics for preventing internal heat accumulation and having hygienic properties capable of removing bacteria on the surface of the cushion body.

  The present invention is a cushion body containing an inner bag filled with foamed resin particles in an outer bag, wherein the outer bag is made of an elastic fabric, and the inner bag is at least partially on the surface. A cushion body characterized in that a metal coating is formed. The foamed resin particles preferably have a particle size of 0.1 to 1.4 mm.

  The stretchable fabric is preferably a moisture-permeable and waterproof fabric, and more preferably a stretchable fabric made of a laminated fabric of a knitted fabric and a porous synthetic resin sheet. The cushion body using this fabric can prevent sweat and the like from entering the inside of the cushion body, and can prevent the growth of bacteria inside the cushion body. Moreover, since it has air permeability, it becomes the cushion body which has the more outstanding heat dissipation characteristic.

  The stretchable fabric preferably has a longitudinal elongation of 60 to 80% and a lateral elongation of 100 to 120% at a tensile load of 2.5 kg weight and a tensile speed of 10 cm / min. When the lower limit of the elongation range is not reached, sufficient deformation of the cushion body according to the body shape does not occur, and the cushion body surface becomes a hard and highly repellent cushion body, and the effects such as pressure ulcer prevention are reduced. Will do. On the other hand, when the upper limit value of the elongation range is exceeded, the body part is likely to bottom out on the bottom surface of the cushion body, so that the effects such as pressure ulcer prevention are reduced. The elongation of the stretchable fabric constituting the outer bag is as follows. A sample having a width of 2.5 cm and a gripping interval of 10 cm was measured with a Tensilon tensile tester, the gripping length was 10 cm, the pulling speed was 10 cm / min, and the tensile load was 2 It is shown when measurement is performed in accordance with JIS L1018 under the measurement condition of .5 kg weight.

  The inner bag is preferably made of a stretchable fabric, has a 1 kg weight tension, a longitudinal elongation of 250 to 300%, and a lateral elongation of 100 to 140%. It is particularly preferable to select a material having a longitudinal elongation of 340 to 380% and a lateral elongation of 140 to 180% for a tension of 3 kg. Combining a medium bag using an elastic fabric in this elongation range with an outer bag using an elastic fabric in the above elongation range, it is an optimal cushion body for use as a cushion body for the prevention of pressure ulcer, etc. Become. In addition, the elongation of the stretch fabric constituting the inner bag was set to 16 cm × 2.5 cm or two types of fabric cut into 2.5 cm × 16 cm, and the longitudinal direction was 16 cm in the measurement of the elongation in the longitudinal direction. In the measurement of the elongation in the transverse direction using a sample, the elongation is obtained when a sample having a transverse direction of 16 cm is used.

  The foamed resin particles are obtained by pre-expanding raw material beads, and the raw material beads are surface-coated with 0.5 to 1.5 parts by weight of a flow accelerator with respect to 100 parts by weight of the raw material beads. preferable. By covering the foamed resin particles with the flow promoting agent, the sensitive person is not frustrated by the abnormal noise caused by the friction between the foamed resin particles. The period of use can be extended.

  The foamed resin particles preferably have a filling rate with respect to the volume of the inner bag of 60 to 145%. This filling rate is a percentage of the volume occupied by the foamed resin particles in the volume of the inner bag to which no external action such as tensile load is applied.

  The cushion body is a cushion body that can be used for prevention or alleviation of pressure ulcers.

  According to the invention configured as described above, the outer bag has a configuration in which the inner bag filled with the foamed resin particles is housed, so that the outer bag is placed under a high temperature capable of being sterilized independently. It is a cushion body with excellent hygiene and a metal film is formed on the surface of the inner bag, so that it can exhibit excellent heat dissipation characteristics and prevent heat accumulation inside the cushion body. Therefore, it is a cushion body which can prevent the user's perspiration and moisten the body surface, and is a cushion body suitable as a cushion body used for the prevention and relaxation of pressure ulcers.

Hereinafter, although this invention is demonstrated based on embodiment, the specific description content in this embodiment does not specifically limit this invention. FIG. 1 is a perspective view of an embodiment of the cushion body according to the present invention, and FIG. 2 is a schematic cross-sectional view taken along the line AA of the cushion body of FIG. 1. The cushion body according to the first embodiment of the present invention. Reference numeral 1 denotes a cushion body in which a rectangular parallelepiped outer bag 2 and an inner bag 3 having the same shape as the outer bag 2 filled with foamed resin particles 4 are accommodated. The outer bag 2 of the cushion body 1 is formed by stitching a stretchable fabric into a rectangular parallelepiped shape, and a fastener for taking in and out the middle bag 3 (not shown) is provided on one side thereof.

  The stretch fabric constituting the outer bag 2 has two knitted fabrics connected in a columnar shape with polyurethane elastic fibers, and one surface which is the inner surface of the outer bag 2 has a moisture permeable and waterproof thickness of about 0.02 mm. A porous polyurethane sheet having properties is laminated. The cushion body of the present embodiment using the stretch fabric in which the two knitted fabrics are connected in a columnar shape and laminated with a moisture permeable waterproof polyurethane sheet is a cushion body having moisture permeability and air permeability. In addition, by preventing blood, body fluid, medicine, or the like from penetrating into the cushion body, bacteria are prevented from being generated inside the cushion body.

  Furthermore, the stretchable fabric has an elongation of 60 cm in the longitudinal direction when measured with a Tensilon tensile tester under measurement conditions of a grip length of 10 cm, a pulling speed of 10 cm / min, and a tensile load of 2.5 kg. An elastic fabric is selected that falls within the range of 80% to 80% and 100% to 120% in the lateral direction. By selecting a fabric with such an elongation, the stretchable fabric can be stretched without rebounding against the body load on the cushion body, and the cushion body can wrap around the body part that became the fulcrum of the load Is realized.

  The inner bag 3 is manufactured using a two-weight ricot fabric that is an extensible fabric. In order to avoid heat accumulation inside the cushion body when the cushion body is used, metal deposition is performed on the outer surface side of the cushion body. Thus, a metal film layer is formed to improve the heat dispersibility of the cushion body.

  The two-weight recot fabric is a fabric in which polyurethane yarn is inserted into a warp knitted (tricot) structure of nylon yarn or polyester yarn, preferably 90 to 75% by weight of nylon yarn or polyester yarn, and 10 to 25% by weight of polyurethane yarn. Is selected. Moreover, it is good to use this cloth | dough of the thickness of 0.3-1.5 mm, Preferably it is less than 1 mm, More preferably, it is the thickness of 0.5-0.6 mm.

  As the two-weight ricot fabric, a fabric having a longitudinal elongation of 250 to 300% and a lateral elongation of 110 to 140% at a tension of 1 kg is selected and used. This fabric is particularly preferably a fabric having a longitudinal elongation of 340 to 380% and a lateral elongation of 140 to 180% at a tension of 3 kg.

  The metal deposited on the two-weight ricot fabric is not particularly limited, but aluminum, stainless steel, titanium, and the like can be selected, and it is preferable to select titanium from the viewpoint of corrosion resistance and workability. Moreover, it is suitable to vapor-deposit so that the film thickness of the vapor-deposited metal film may be 50-2000 mm.

  As the foamed resin particles 4 of the present invention, it is preferable to select and use particles having an average diameter of 0.1 to 1.4 mm, which is an equivalent diameter when each particle is converted into a spherical shape. It is. When the average diameter of the foamed resin particles exceeds 1.4 mm, the fluidity in the cushion is impaired and the user feels uncomfortable. On the other hand, if the average diameter of the foamed resin particles is smaller than 0.1 mm, the fluidity is excellent, but it is not suitable because the foamed resin particles may flow out from the gaps of the fabric when the fabric is stretched. More preferably, the foamed resin particles of the present invention have a particle diameter (average diameter of each foamed resin particle) of about 0.4 to 0.9 mm.

  The expanded resin particles 4 are obtained by pre-expanding raw material beads, and more preferably, a pre-expanded body produced in a pre-expanding step of a beaded polystyrene foam is used. In this case, it is preferable that the surface is coated with 0.5 to 1.5 parts by weight of a glidant with respect to 100 parts by weight of the raw material beads. Here, the glidant is a salt of a fatty acid and a metal, and the fatty acid is at least one selected from stearic acid, ethylenebisstearic acid, lauric acid, and palmitic acid, and the metal is magnesium, It is preferably at least one selected from calcium, zinc, barium, and aluminum. When the foamed resin particles are used after being surface-coated with a flow accelerator, since there is no friction between the foamed resin particles, abnormal noise is generated by friction and the cushion body is prevented from being contracted due to abrasion of the foamed preliminary particles.

  The foamed resin particles are filled into the cushion body by filling the foamed preliminary particles into the inner bag and further storing the inner bag in the outer bag. At this time, it is preferable that the filling rate of the foamed resin is 60 to 145% with respect to the volume of the inner bag according to the usage mode. When the filling rate is less than 60%, the sinking of the body part becomes large and the body position cannot be easily changed, and the sinking of the body becomes deep so that the body easily bottoms out at the bottom of the cushion body. Can not properly prevent or relieve pressure ulcers. On the other hand, when the filling rate exceeds 145%, the repulsive force of the cushion body is a repulsive force that is not suitable for the prevention and relaxation of pressure ulcers.

  What is necessary is just to change a filling rate suitably with a body region | part, and when using a cushion body in bone process parts, such as an elbow and a heel, it is a filling rate of 105-145% which becomes a high filling rate within the said filling rate range. It is preferable that there is a filling rate of 139 to 145%. When the cushion body is used for a body part other than the osteoid part or the body part having few osteogenic parts, it is preferable to increase the feeling of use of the cushion body as a filling rate of 90 to 105% with a reduced filling rate. When used as a cushion body used by interposing between closely contacting body parts, the filling rate is preferably 90 to 96%. If the filling rate is set to 60 to 90%, the deformation according to the body shape can be further increased.

  The cushion body of FIG. 1 having the above configuration can be used as a cushion for elbows, heels, knees, backs, and the like. FIG. 3 is a view showing an example of use of the cushion body of FIG. The cushion body 1 is interposed between the buttocks of the person who is in the supine position and the floor surface.

  4 is a schematic cross-sectional view taken along the line BB in FIG. The cushion body 1 is deformed according to the weight of the user 5 according to the shape of the buttocks. Further, the deformation of the cushion body 1 is accompanied by a deformation that envelops the heel portion by the flow of the foamed resin particles filled in the cushion body, and exhibits a further body pressure dispersion effect.

  Next, another embodiment of the present invention will be described. FIG. 5 is a perspective view of another embodiment of the cushion body according to the present invention. In the cushion body 6 of FIG. 5, five small cylindrical inner bags 7 filled with foamed resin particles are stored in a cylindrical outer bag. The filling rate of the foamed resin particles filled in the inner bag 7 is 66 to 72%, and the cushion body 6 can be supported by enveloping the body part by sufficient deformation according to the body shape. It is a suitable cushion body. This cushion body 6 is a flexible cushion body, and can be used for other body parts at the same time as it is used for a bag, for example. Further, it is possible to use the cushion body 6 such that the cushion body 6 is kept in a straight line without being bent, and is disposed along the back muscles of a person in a supine position.

  FIG. 6 is a view showing an example of use of the cushion body of FIG. In this use example, the cushion body 6 can be brought into contact with the elbows, knees, heels, and heel bone processes of a person in a lying position.

  Still another embodiment will be described. FIG. 7 shows another embodiment of the cushion body according to the present invention. The cushion body 8 in FIG. 7 has a basic shape in which a flat cylinder is curved in a substantially semicircular arc shape, and two peaks rise from the curved inner circumference toward the inside of the inner circumference, and a gentle curve undulates. It has a different shape. The use of the cushion body 8 is performed, for example, by mainly disposing the bulging portion on the inner periphery, the tip, and the end under a plurality of parts of the body. In this use, a stretchable fabric is used for the outer bag and the inner bag of the cushion body 8, and the cushion body itself is stretchable, so that it can be used by extending to the body part that supports the cushion body 8. It is.

  FIG. 8 is a view showing an example of use of the cushion body of FIG. In this use example, the cushion body 8 is used for a person in a half-side-down position with a body inclination of about 30 degrees with little pressure on the bone protrusion. The distal end of the cushion body 8 is placed under the temporal region, and the inner peripheral bulge portion on the distal end side, the inner peripheral bulge portion on the distal end side, and the distal end are respectively placed under the shoulder, buttocks and thighs The cushion body 8 supports each body part while deforming according to each body part, and sufficiently reduces the concentration of its own weight on a certain part. Moreover, the end of the cushion body 8 supporting the thigh can be extended to below the knee or the armpit.

  As long as it becomes the cushion body of the structure in this invention, the cushion body of this invention is comprised irrespective of the said embodiment. That is, the shape of the cushion body is not particularly limited to the substantially rectangular parallelepiped shape, the cylindrical shape, and the like, and the use of the cushion body is not limited to use for prevention or alleviation of pressure ulcers.

  In addition, by setting the elongation of the elastic fabric constituting the outer bag, the elongation of the elastic fabric constituting the inner bag, and the filling rate of the foamed resin particles filled in the inner bag within the above range, the cushion body In use, a cushion body in which the user's body part does not bottom out on the bottom of the cushion body can be realized.

  The pressure dispersion performance of the present invention will be specifically described below based on Example 1 and Example 2. In addition, the cushion body in an Example is a cushion body which accommodated the inner bag with which the foamed resin particle was filled in the outer bag. The cushion body constituent members used for this cushion body are as follows.

(Outer bag)
A fabric in which two knitted fabrics were connected on a column with polyurethane elastic fibers was used. At this time, it connected with the polyurethane elastic fiber so that the space | interval of two sheets of knitted fabric might become a space | interval of about 2-3 mm. And the porous polyurethane sheet sheet | seat of thickness 0.02mm was laminated | stacked on the surface used as the inner surface of an outer bag in two knitted fabrics connected columnarly. As for the shape of the outer bag, the cushion body of Example 1 was a substantially long cylindrical shape, and the cushion body of Example 2 was a substantially rectangular parallelepiped shape.

(Inner bag)
Two-weight ricot fabric was used. A titanium film was formed by vapor deposition on one surface of the fabric, which was the outer surface of the inner bag. In the cushion body of Example 1, it was set as the short cylinder-shaped inner bag about 1/5 in length compared with the outer bag, and in Example 2, it was set as the inner bag of the same dimension as the outer bag.

(Foamed resin particles)
An expanded polystyrene having an expansion ratio of 20 times was used. The filling ratio of expanded polystyrene relative to the inner volume of the inner bag was 69% in Example 1 and 93% in Example 2.

  The cushion body of Example 1 and Example 2 was manufactured with the component of the said cushion body. In addition, the five inner bags in the cushion body of Example 1 are accommodated in the outer bag.

  Subsequently, the body pressure dispersion | distribution condition of the cushion body of Example 1 and Example 2 was measured. FIG. 9 is a drawing-substituting photograph showing the cushion body usage state when the body pressure dispersion of the cushion body of Example 1 is measured. FIG. 11 is a drawing-substituting photograph showing the use state of the cushion body when the body pressure dispersion of the cushion body of Example 2 is measured.

(Example 1)
The body pressure mat was covered on the cushion body, and as shown in FIG. 9, the body pressure distribution was measured in a half-side-down position with the cushion body along the back muscle.

(Example 2)
The body pressure mat was covered on the cushion body, and the body pressure dispersion state was measured with the cushion body sandwiched between both feet as shown in FIG.

FIG. 10 is a diagram showing the results of measuring the body pressure dispersion of the cushion body of Example 1, and FIG. 12 is a diagram showing the results of measuring the body pressure dispersion of the cushion body of Example 2. In these measurement results, the colored part is the part where the cushion body is subjected to pressure, and in any measurement result, the range showing the pressure distribution is wide, so the cushion body is the body regardless of the unevenness of the body shape. It was confirmed that the cushion was supported so as to wrap around the body part over a wide range by deforming according to the shape. In any of the cushion bodies of the examples, it was confirmed that the body part did not bottom out at the bottom of the cushion body.

It is a perspective view of one embodiment of a cushion body concerning the present invention. It is a cross-sectional schematic diagram between AA of the cushion body of FIG. It is a figure showing the example of 1 use of the cushion body of FIG. It is a cross-sectional schematic diagram between BB in FIG. It is a perspective view of other embodiment of the cushion body concerning the present invention. It is the figure showing the example of 1 use of the cushion body of FIG. It is a perspective view of other embodiment of the cushion body concerning the present invention. It is a figure showing the example of 1 use of the cushion body of FIG. It is a drawing substitute photograph showing the cushion body use state when the body pressure dispersion | distribution of the cushion body of Example 1 is measured. It is a figure showing the result of having measured the body pressure dispersion | distribution of the cushion body of Example 1. FIG. It is a drawing substitute photograph showing the cushion body use condition when the body pressure dispersion | distribution of the cushion body of Example 2 is measured. It is a figure showing the result of having measured the body pressure dispersion | distribution of the cushion body of Example 2. FIG.

Explanation of symbols

2 Outer bag 3, 7 Middle bag 4 Foamed resin particles

Claims (7)

A cushion body containing an inner bag filled with foamed resin particles in an outer bag,
The outer bag is made of elastic fabric,
The said inner bag is a cushion body characterized by the metal film being formed in at least one part of the surface. 2. The cushion body according to claim 1, wherein the stretchable fabric is a moisture-permeable and waterproof fabric. The cushion body according to claim 2, wherein the stretchable fabric is a laminated fabric of a knitted fabric and a porous synthetic resin sheet. The stretchable fabric has a tensile load of 2.5 kg weight, a longitudinal elongation of 60 to 80% at a tensile speed of 10 cm / min, and a lateral elongation of 100 to 120%. The cushion body as described in 2. The cushion according to any one of claims 1 to 4, wherein the inner bag is made of an elastic fabric. The foamed resin particles are obtained by pre-expanding raw material beads, and the raw material beads are surface-coated with 0.5 to 1.5 parts by weight of a flow accelerator with respect to 100 parts by weight of the raw material beads. The cushion body in any one of 1-5. The cushion body according to any one of claims 1 to 6, wherein the cushion body is used for prevention or alleviation of pressure ulcers.