JPH09253138A - Bedsore preventing bedding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ideal bedding which sensitively functions in a place where the body pressure is collected, provide no floating feeling, and locally adds no excessive load by arranging, in the position where the body pressure is collected of the bedding formed of an elastic body, a mechanism for changing the thickness of this position timewise. SOLUTION: A recessed part 5 from which a soft material 3 is removed is formed in a part where the bedsore of a human body is easily generated of a mattress 4 having the soft material 3 adhered onto a hard material 2, for example, the waist part, two bedsore preventing mechanisms 1 formed of a shape memory alloy, for example, are arranged there, and a heat insulating material 6 is placed thereon. As the bedsore preventing mechanism 1, a mechanism for electrically heating and deforming the shape memory alloy made into fabric in a fixed period by a controller is used. For example, the body pressure added to the sacral part is returned to the original form and reduced by current carrying, or deformed by current carrying stop to increase the body pressure, and this is periodically repeated, whereby the body pressure is changed to prevent the bedsore.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a common name having a bed sore prevention mechanism, a bedding mattress, an air mat, a chair cushion, and the like.
These are collectively called bedding.

[0002]

2. Description of the Related Art Conventionally, many mats having a function of preventing bedsores have been proposed. For example, Japanese Patent Publication No. 53-28820 has a structure in which a frustoconical space is provided inside the foamed polyurethane, and a spring is combined with this space. The one with a large number of air bars that draws in and discharges the air inside polyurethane is
In Japanese Patent Laid-Open No. 0-241133, a foam bag is provided in a polyurethane foam as a mat for applying to the waist of a human body, and in Japanese Patent Laid-Open No. 4-241133, the transformation temperature of the sheet itself is the temperature in the bed. It is disclosed that the shape memory alloy is made of a higher shape memory alloy and the body pressure concentrated locally is dispersed by the shape recovery of the shape memory alloy.

[0003]

However, in the conventional floor sore preventing mechanism for a mat, if the entire mat acts with the same hardness and movement, the place where the body pressure is concentrated is localized, so a sufficient effect is not obtained. I can't get it,
Also, if it is too soft like an air mat, it feels floating and is not good. In addition, the type that is used locally such as applied to the waist has a problem that the waist is overloaded.

The problem to be solved by the present invention is to provide an ideal bed sore prevention mechanism that functions sensitively in a place where body pressure is concentrated, does not have a feeling of floating, and is not locally overloaded. Is to get.

[0005]

The present invention has solved the problem by providing a mechanism for changing the thickness of a mat made of an elastic body in the vicinity of a place where body pressure is concentrated. .

As a result, most of the human body is held by the elastic body having an appropriate hardness, so that there is a sense of stability, and an appropriate change in body pressure can be given only to a necessary portion. Also,
There is no need to worry about the waist being lifted or slipped like a small mat.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An air mat or a shape memory alloy is set according to the sacrum, scapula, heel, etc. where the body weight is likely to be concentrated, and the air mat is used as a bed sore generation preventing mechanism for changing the thickness with time. The thickness of the mat is changed with time by pumping air into the or heat deforming the shape memory alloy. The magnitude and cycle of the change are set arbitrarily by the controller.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment in which the present invention is applied to a so-called mattress for bedding, in which a human body H is lying on its back. FIG. 2 is a diagram showing a sectional structure of the mattress. In the figure, reference numeral 1 denotes a bedsore prevention mechanism, in which a mattress 4 having a hard material 2 and a soft material 3 adhered to it is formed with a recess 5 from which the soft material 3 is removed, in a waist portion where a bed slip of a human body is likely to occur. Then, two bedsore prevention mechanisms 1 made of a shape memory alloy are arranged therein, and a heat insulating material 6 is placed thereon to block heat. The bedsore prevention mechanism 1 can be installed in other areas such as shoulder blades and heels where bedsores are likely to occur. The bed slip prevention mechanism 1 uses a shape memory alloy having a width of 0.7 mm and a thickness of 0.4 mm with a pitch of 4.
A woven fabric having a size of 200 mm square, which was stored in a 0 mm wavy form, was used with a controller that was electrically heated for 5 minutes at a cycle of 40 minutes to be deformed.

FIG. 3 shows a time-dependent change in body pressure applied to the sacrum S shown in FIG. 1 together with a cycle of energization for heating.
From the figure, the shape memory alloy is heated to return to its original shape by energization, whereby the body pressure of the sacrum is approximately 65 g.
/ Cm ² to 27 g / cm ² , and by stopping energization, the shape memory alloy cools and the body pressure in the sacrum is 65 g.
/ Cm ² increase. By repeating this periodically, the body pressure changes, and it can be seen that it is effective in preventing bed sores and the like.

In the above embodiment, an example of using a mat with a shape memory alloy as a mechanism for periodically increasing the thickness of the bedding has been described, but instead of this, the thickness is changed by a motor. The same effect could be obtained even if an air mat or other mechanical mechanism was used in a part where bed sores are likely to occur.

[0011]

【The invention's effect】

(1) Appropriate changes in body pressure can be given only to the necessary parts, and most of the human body is held by an elastic body of appropriate hardness, so there is a sense of stability and there is a tendency for bed sores to occur. The body pressure is distributed naturally, and there is no need to worry about straining or shifting the waist.

(2) By varying the body pressure, there is further a bedsore prevention and massage effect.

(3) It fits the body shape, has a sense of stability, and can sleep well.

(4) A reliable floor slip prevention effect is possible without the position shifting.

(5) The bedsore prevention mechanism can be installed at any part of the bedding, so that it can be used according to the user.

(6) Maintenance such as repair and cleaning of the air mat is easy.

[Brief description of drawings]

FIG. 1 shows an embodiment in which the bedsore prevention mechanism of the present invention is applied to a so-called mattress for bedding.

FIG. 2 shows a sectional structure of FIG.

FIG. 3 shows changes with time in temperature of each part of the mattress shown in FIG. 1 and body pressure applied to the sacrum.

[Explanation of symbols]

1 Floor slip prevention mechanism 2 Hard material 3 Soft material 4 Mattress 5 Recessed portion 6 Heat insulation material H Human body S Sacral portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyoshi Eguchi 1-2-8 Minoshima, Hakata-ku, Fukuoka Japan Tungsten Co., Ltd. (72) Hironobu Tomei 1-2-8 Minojima, Hakata-ku, Fukuoka Japan Tungsten Japan Co., Ltd. (72) Inventor Kazunori Oho 1-2-8 Minojima, Hakata-ku, Fukuoka City Japan Tungsten Co., Ltd.

Claims (4)

[Claims] 1. A bed-shedding prevention bedding characterized in that a mechanism for changing the thickness of the bedding made of an elastic body in the vicinity of a place where body pressure is concentrated is arranged. 2. Bedsore prevention bedding, wherein the mechanism of time-dependent change in thickness according to claim 1 is a mechanism utilizing deformation of a shape memory alloy. 3. Beds for preventing bedsores, wherein the mechanism of time-dependent change of thickness is a mechanism for inflating an air mat with a pump. 4. A bed-shedding prevention bedding, wherein the mechanism of time-dependent change in thickness is a mechanism that moves up and down by driving a motor.