JP2002315656A - Mattress member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mattress member enhancing the property of dispersing a patient's body pressure. SOLUTION: The mattress member comprises a base part 2 made from soft foam and a viscoelastic part 5 having alternate thick and thin layer portions 6 and 7 and stacked on the base part 2, with these parts being covered with cover members 4, 9, and 10. A recessed space 8 is formed in the base part located below the thin layer portion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mattress member having improved body pressure dispersing performance in order to prevent, for example, pressure ulcers which are likely to occur in chronic pressure patients.

[0002]

2. Description of the Related Art Conventionally, in order to prevent pressure ulcers which tend to occur in chronic pressure patients such as sick or bedridden elderly people, a base portion made of a soft foam material and a viscoelastic portion made of a gel-like substance are superposed thereon. A cushioning material in which the viscoelastic portion is arranged alternately into a thick layer portion and a thin layer portion is known (for example, JP-A-2000-37265).

[0003]

In the structure disclosed in the above publication, when the mattress member is bent to raise the patient, the base portion 2 and the viscoelastic portion 5 are bent as shown in FIG. The wrinkles 13 on the inner part may become more uneven and press against the patient's body, causing not only discomfort to the patient but also exacerbation of pressure ulcers.

The present invention has been made in view of such circumstances, and provides a mattress member that suppresses the occurrence of a convex portion that presses against a patient's body when the mattress is bent.

[0005]

Means for Solving the Problems The present invention (claim 1) provides:
A base portion made of a soft foam material, and a viscoelastic portion in which thick layer portions and thin layer portions are alternately arranged on the base portion are laminated, and these are covered with a coating material. In the mattress member, a concave space is formed in the base portion located below the thin layer portion. In such a configuration, a bending force of the mattress member is applied to the thin layer portion of the base portion and the viscoelastic portion, so that a compressive force in the surface direction is applied. It is hard to become power.

In the present invention (claim 2), the covering material is a stretchable woven fabric covering the entire periphery of the base portion, another stretchable woven fabric covering the upper surface of the viscoelastic portion, It is made of elastic synthetic leather which covers another woven fabric. In such a structure, the covering material expands and contracts according to the bending of the mattress member.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a mattress according to the present invention, FIG. 2 is a cross-sectional view taken along the line II-II, and FIG. 3 is a wrinkle (convex portion) which gives a patient an uncomfortable feeling when bending the mattress of the present invention. It is explanatory drawing for demonstrating disappearance.

In these figures, reference numeral 1 denotes a mattress member suitable for sleeping a sick or bedridden elderly person, and 2 denotes a base portion of the mattress member 1. The base portion 2 is made of a soft foam material such as a soft foam material. It is formed of a flexible material such as urethane foam and has a predetermined thickness and a predetermined length and width. The base portion 2 can have a thickness of 6 cm, a vertical length of 190 cm, and a width of 81 cm to 91 cm. Actually, the base portion 2 can be divided into three portions in the vertical direction and used by being connected with a planar fastener or the like.

The base portion 2 is formed to be long and short so as to cover the entire supine posture of the patient, and soft foamed polyurethane having a different foaming density in the vertical (thickness) direction may be laminated as necessary. . Other foam materials may be used.

Reference numeral 3 denotes a stretchable covering material such as a nylon elastic yarn woven cloth which covers the base portion 2 from the back side to the peripheral surface, and is provided with a covering capable of responding to bending of the mattress member 1 such as a gap-up. Making it possible. 4 is
A similar elastic covering material such as a nylon elastic yarn woven cloth covering the front side of the base portion 2 covers the entire base portion 2 together with the covering material 3 and also serves as a back surface material of the viscoelastic portion described below. I have.

Reference numeral 5 denotes a viscoelastic portion formed on the surface side of the base portion 2 for dispersing the body pressure of a bed person or a seated patient to improve the sleeping comfort and the sitting comfort. The viscoelastic portion 5 is formed by using a viscoelastic material made of a gel material to form a thick layer portion 6 having a mountain surface having a predetermined length and a valley surface having a predetermined length on the coating material 4 on the front side of the base portion 2. The thin layer portion 7 is formed in an uneven shape so that the thin layer portion 7 is alternately repeated. Viscoelastic part 5
Has a thick layer 6 with a thickness of 5 mm and a peak width of 33 mm,
In addition, the thin layer portion 7 can have a thickness of 2 mm and a width of 14 mm. By providing the thin layer portion 7 on the viscoelastic part 5,
A relatively heavy gel material can be reduced, and the weight can be reduced.

In the embodiment, the gel material forming the viscoelastic portion 5 comprises a polystyrene resin and butyl rubber mixed with a softener of an aliphatic hydrocarbon compound, a tackifying resin and an antioxidant, When the composition is heated to a temperature range of about 220 ° C., the viscosity decreases and the composition has fluidity. At room temperature, the composition increases in viscosity and has viscoelasticity, but the composition has almost no fluidity. In the present invention, the gel material heated to 150 ° C. or higher and given fluidity is directly injected into and filled in the concave and convex shaped portions, and cooled to room temperature to obtain the viscoelastic body having the concave and convex shape.

Reference numeral 8 denotes a surface side (upper side) of the base portion 2;
A plurality of concave spaces formed below the thin layer portion 7 of the viscoelastic portion 5 corresponding to the thin layer portion 7 and having a length substantially equal to the thin layer portion 7. As described above, when the mattress member 1 is bent, even if the thin layer portion 7 of the viscoelastic portion 5 becomes wrinkled, it can enter.

Reference numeral 9 denotes an elastic covering material such as a nylon elastic yarn woven cloth which covers the surface of the viscoelastic portion 5.
The coating material 4 covering the surface of the base portion 2
And overlapped. Here, the covering material 9 that covers the viscoelastic portion 5 and the covering material 4 that is located below the viscoelastic portion are adhesively fixed by the thin layer portion 7 of the viscoelastic portion 5. Since the adhesive force of the viscoelastic part 5 can be used in this way,
No adhesive is required between the upper and lower woven fabrics 4 and 9.

Reference numeral 10 denotes a covering material such as synthetic leather which covers the outermost surface of the mattress member 1. The covering material 10 is formed of an elastic material such as polyurethane so as to overlap with the covering material 9 on the upper surface of the viscoelastic portion 5.

The covering members 3 and 4 for covering the entire circumference of the base portion 2 described above, the covering material 9 for covering the upper surface of the viscoelastic portion 5, and a synthetic polyurethane material coated on the covering material 9 having elasticity. Since the covering material 10 made of leather has elasticity, even if the mattress member 1 is bent due to gatch-up or the like, the mattress member 1 expands and contracts in accordance with the bending, and the base portion 2 and the viscoelastic portion 5 are properly adhered. To form a coating.

The outermost coating material 10 and the coating materials 4 and 9 above and below the viscoelastic portion 5 overlap the base portion 2 in a region outside the viscoelastic portion 5 in a triple manner. The overlapping end portions of the coating materials 4, 9, and 10 and the upper edge portion of the coating material 3 that covers the lower side of the base portion 2 are stitched with a thread 11. Thereby, the mattress member 1 according to the present invention is configured.

Next, the operation of the mattress member 1 having the above-mentioned structure will be described. The mattress member 1 having the viscoelastic portion 5 on the upper portion is generally used by being laid on a bed. The body pressure of a patient or the like lying on the mattress member 1 is effectively dispersed by the viscoelastic portion 5 having a convex shape, that is, the thick portion 6 and the thin portion 7 of the viscoelastic portion 5 so that the pressure is not concentrated at one place. It is effective in preventing bedsores and the like.

In this case, when a load is applied in the vertical direction, the viscoelastic portion 5 applies the stress not only in the vertical direction but also in the horizontal direction.
It has characteristics that it can be widely generated in an oblique direction to spread the load widely, and that even when the thickness is reduced, the feeling of bottoming can be reduced. In addition, since it has a delay in recovery from deformation when the load is removed, when used on a mattress, even if the user lying on the back turns, there is no reactionary swaying, so comfortable use You can get the feeling.

By the way, as shown in FIG. 3, when the mattress member 1 is bent by gatch-up so as to raise the bedridden person, the mattress member 1 is bent so that the thin layer portions of the base portion 2 and the viscoelastic portion 5 are formed. Wrinkles 12 are formed by applying a compressive force in the surface direction to 7. However, even if such wrinkles 12 are formed, the wrinkles 12 are formed in the concave space 8 by the concave space 8 of the base portion 2 located at a position corresponding to the thin layer portion 7 as shown in FIG. Get into it.

For this reason, as shown in FIG. 4, the wrinkles 13 protruding so as to hit the waist of the person sitting when the viscoelastic part 5 is bent and to press the person's body cannot be formed. Also, discomfort disappears and the sitting comfort is improved.

[0022]

As described above, according to the first aspect of the present invention, the mattress member has a viscoelastic surface formed by bending the mattress member on the side of the mattress member on which the uneven viscoelastic portion effective for preventing bedsore is provided. The viscoelastic part protrudes, and the protruding part that hits the user's waist and presses against the body cannot be formed because there is a concave space into which the wrinkles generated in the thin part of the part enter. Will be better.

According to the second aspect of the present invention, the mattress member is entirely covered with an elastic woven fabric, and the upper surface of the viscoelastic portion is covered with elastic synthetic leather. Even when the mattress member is bent due to, for example, bending, the mattress member expands and contracts accordingly, and the covering state does not change. Therefore, the coating material is not broken and the viscoelastic portion is not exposed, so that the durability is improved and the device can be used for a long time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a mattress member according to the present invention.

FIG. 2 is a cross-sectional view of the mattress member taken along line II-II in FIG.

FIG. 3 is a cross-sectional view of a main part illustrating that a mattress member according to the present invention prevents a protruding wrinkle from pressing a user's body.

FIG. 4 is a cross-sectional view of a principal part explaining that a mattress member having a conventional structure generates a protruding wrinkle that presses a user's body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mattress member 2 Base part 3 Coating material 4 Coating material 5 Viscoelastic part 6 Thick layer part 7 Layer thin part 8 Concave space 9 Coating material 10 Coating material 12 Wrinkle 13 Projecting wrinkle

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B68G 5/02 A61G 7/04

Claims (2)

[Claims] 1. A base portion made of a soft foam material and a viscoelastic portion in which thick portions and thin layer portions are alternately arranged on the base portion, and these are covered with a coating material. A mattress member having a structure as described above, wherein a concave space is formed in the base portion located below the thin layer portion. 2. The stretchable woven fabric covering the entire circumference of the base portion, the other stretchable woven fabric covering the upper surface of the viscoelastic portion, and the other woven fabric. 2. The mattress member according to claim 1, wherein the mattress member is made of synthetic leather having elasticity.