JP3692485B2 - Pressure ulcer mat with electrode - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a pressure ulcer mat that is laid under the body of a bedridden elderly or sick person to prevent floor rubbing.
[0002]
[Prior art]
As is well known, since bedridden elderly people and sick people are likely to rub the floor, a flexible pressure ulcer mat 100 is laid under the body 101 as shown in FIG. 4 to prevent floor rub.
[0003]
As the pressure ulcer mat 100, a mat made of a flexible urethane sponge or silicon gel has been widely used.
[0004]
[Problems to be solved by the invention]
However, the conventional pressure ulcer mat 100 merely reduces the pressure of the body due to its flexibility, and therefore has a problem that the floor rub prevention effect is not sufficient and often causes floor rub when used for a long period of time. .
[0005]
The present invention has been made in view of the above problems, and the object of the present invention is to provide a pressure ulcer mat with an electrode that not only reduces body pressure but also improves blood circulation and exhibits a sufficient floor rubbing prevention effect. It is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a pressure ulcer mat with electrode according to claim 1 of the present invention reacts a polyol having an alkylene oxide chain with a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, A flat electrode made of a flexible carbon fiber non-woven fabric is provided on the upper surface of a mat made of a flexible polyurethane gel obtained by reacting a polyurethane polyol prepolymer having a polyurethane polyisocyanate prepolymer with an alkylene oxide chain. The upper surface of the through-hole is coated with a conductive gel layer made of a polyurethane gel containing an ionic compound, and a plurality of through-holes penetrating in the lateral direction are formed in the mat, and the inner surface of the through-hole is a non-adhesive polyurethane gel layer in covering It is characterized in that the.
[0008]
The pressure ulcer mat with an electrode according to claim 1 is used by placing the flat electrode under a body electrically connected to a low frequency treatment device, and applying a low frequency microcurrent for an appropriate time for an appropriate time. To do. Thus, when the pressure ulcer mat with an electrode is laid under the body, the body is softly supported because the mat is flexible, and the pressure on the body is reduced. When energized, a low-frequency microcurrent flows from the planar electrode through the conductive gel layer to the body, and blood circulation is improved because low-frequency treatment of the circulatory system such as blood is performed.
[0009]
The pressure ulcer mat with electrode according to claim 1 can sufficiently reduce the pressure on the body and improve blood circulation as described above, and therefore can sufficiently prevent floor rubbing even when used for a long time.
[0010]
Further, when the flat electrode is a flexible carbon fiber non-woven fabric as in the pressure ulcer mat with an electrode according to claim 1, the concern that the pressure on the body is increased by the flat electrode can be solved.
[0011]
And like the pressure sore mat with an electrode of Claim 1, when the electroconductive gel layer which covers a plane electrode consists of a polyurethane gel containing an ionic compound, this gel has the outstanding softness | flexibility and skin. The feeling of use of the pressure ulcer mat is improved due to good contact feeling and adhesion, and since the gel does not contain a monomer that irritate the skin, there is no need to worry about causing “skinning” of the skin.
[0012]
Furthermore, like the pressure ulcer mat with electrode of claim 1, the mat reacts with a polyol having an alkylene oxide chain and a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, or a polyurethane polyol pre having an alkylene oxide chain. With a flexible polyurethane gel obtained by reacting a polymer and a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, the matte sink when supporting the body is increased due to the appropriate flexibility of the polyurethane gel, The pressure on the body can be further reduced.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
FIG. 1 is a plan view of a pressure ulcer mat with electrodes according to an embodiment of the present invention, FIG. 2 is a front view of the pressure ulcer mat with electrodes (one side shows a state in which a cover is peeled off), and FIG. It is an A line expanded sectional view.
[0015]
This pressure ulcer mat with electrodes is provided with a plurality of (four in the figure) planar electrodes 2 coated with a conductive gel layer on the upper surface of a substantially horseshoe-shaped mat 1 as shown in FIG. is there.
[0016]
The mat 1 is made of a flexible polyurethane gel. As shown in FIGS. 1 to 3, the mat 1 is formed with a large number of through holes 3 penetrating laterally from the inner side surface to the outer side surface. Yes.
[0017]
This through hole 3 is formed to further improve the flexibility of the mat 1 made of polyurethane gel, to increase the sinking of the mat 1 when supporting the body, and to further reduce the pressure on the body, A through hole 3 having a hole diameter of about 5 to 10 mm is preferable. The through holes 3 are preferably formed with a mutual interval of about 3 to 50 mm. If the through-holes having a hole diameter larger than 10 mm are densely distributed with a mutual interval smaller than 3 mm, the mat 1 becomes weak and the sink when the body is supported becomes too large. On the other hand, when the through-holes having a hole diameter smaller than 5 mm are roughly distributed with a mutual interval larger than 50 mm, the effect of improving the flexibility of the mat 1 by the through-holes 3 is not exhibited remarkably. The through holes 3 are not necessarily provided depending on the degree of flexibility of the polyurethane gel, and the hole diameter and the mutual interval can be changed as appropriate.
[0018]
The above polyurethane gel constituting the mat 1 is obtained by reacting a polyol having an alkylene oxide chain with a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, or by reacting a polyurethane polyol prepolymer having an alkylene oxide chain and an alkylene oxide chain. This is a soft gel obtained by reacting a polyurethane polyisocyanate prepolymer having an adhesive property, and this gel has adhesiveness. Therefore, as shown in FIG. 3, the entire surface of the mat 1 made of the gel including the inner surface of the through hole 3 is integrally covered with a non-adhesive polyurethane gel layer 1a so as not to stick.
[0019]
Such a non-adhesive polyurethane gel can be easily obtained by increasing the amount of the isocyanate component described above to about 1.1 to 1.5 times the amount of the polyol component for reaction. If the non-adhesive polyurethane gel 1a does not cover the upper surface of the mat 1, the mat 1 can adhere to the body or the flat electrode 2 can be adhered.
[0020]
Further, as shown in FIG. 3, a cover material 4 is detachably covered on the inner side surface, the bottom surface, and the outer side surface of the mat 1, and only the upper surface of the mat 1 is exposed. The cover material 4 prevents the mat 1 from being soiled, and a cloth cover material that can be easily washed is preferably used.
[0021]
The shape of the mat 1 is substantially horseshoe-shaped in this embodiment, but needless to say, it can be various shapes such as a donut shape. Further, the material of the mat 1 is not limited to the above polyurethane gel. For example, various materials such as flexible acrylic gel other than polyurethane, various plastic gels such as silicone gel, various sponges such as synthetic rubber and urethane sponge, etc. Soft material can be used, but if the mat 1 is made of polyurethane gel as in this embodiment, its flexibility and the degree of sinking when the body is supported are optimized, greatly reducing body pressure. There is an advantage that it can be reduced, and in particular, when a polyurethane gel in which the through-holes 3 are formed is used, this action and effect are further increased.
[0022]
As shown in FIG. 3, a recess 1 b for embedding each planar electrode 2 is formed on the upper surface of the mat 1, and the planar electrode 2 is embedded in the recess 1 b through an adhesive layer 5. . The upper surface of the planar electrode 2 is covered with the conductive gel layer 6.
[0023]
The planar electrode 2 is made of a flexible carbon fiber nonwoven fabric. As shown in FIG. 1, a terminal portion 2a is provided at the end of each planar electrode 2, and a lead wire 2b is connected thereto. The lead 2b is connected to a low frequency treatment device (not shown).
[0024]
As the flat electrode 2, for example, a plastic film having a metal foil or a metal vapor deposition film formed on one side can be used. However, since the flat electrode based on such a plastic film is less flexible, There is a concern that the pressure when supported will increase. On the other hand, the planar electrode 2 made of the carbon fiber nonwoven fabric is excellent in flexibility and can be flexibly deformed along the unevenness of the body. Yes, it is extremely preferable. Then, by dividing the planar electrode 2 into a plurality of pieces as shown in FIG.
[0025]
Further, the conductive gel layer 6 covering the upper surface of the planar electrode 2 has a thickness of 0.1 mm when the polyurethane gel contains an ionic compound (for example, potassium chloride, sodium chloride, lithium perchlorate, lithium chloride, etc.). A layer having a thickness of about 3 to 1 mm and having an ionic compound content adjusted to have an electrical resistance of about 0.5 to 200 kΩ · cm is used.
[0026]
As the conductive gel layer 6, a hydrogel such as polyhydroxyethyl methacrylate containing the same ionic compound can be used. However, such an acrylic hydrogel has adhesiveness and flexibility when the water content decreases depending on the surrounding environment. In addition, since it contains a monomer that irritate the skin, there is a concern of causing skin irritation. On the other hand, the conductive gel layer 6 made of polyurethane gel containing the above ionic compound is an adhesive gel layer containing almost no moisture, so that the adhesiveness and flexibility are not lowered by the surrounding environment, and the skin Therefore, when the flat electrode 2 is coated with the conductive gel layer 6 of such a polyurethane gel, the feeling of use of the pressure ulcer mat is improved, and the polyurethane gel is used to protect the skin. Since it does not contain any irritating monomer, there is an advantage that the worry of causing the skin fogging is also eliminated.
[0027]
Various adhesives can be used as the adhesive layer 5 for adhering the planar electrode 2 to the recess 1 b of the mat 1, but the conductive gel layer 6 having the above adhesiveness is also used as the adhesive layer 5. It is preferable to do this. When the conductive gel layer 6 is also used in this way, it is not necessary to use a separate adhesive, and the conductive gel penetrates between the carbon fibers of the flat electrode 2 from both the upper and lower surfaces, and electrical contact is improved. There is an advantage of improving the performance. The recess 1b is not necessarily provided, and the planar electrode 2 may be adhered to the upper surface of the mat 1.
[0028]
The pressure ulcer mat with an electrode configured as described above is connected to the low frequency treatment device with the lead wire 2b of each flat electrode 2 and laid under the body of a bedridden elderly or sick person. It is used by energizing a minute frequency current for an appropriate time. When the pressure ulcer mat with electrodes is laid under the body in this way, the mat 1 is flexible, so that the body is softly supported and the pressure on the body is reduced. When energized, a low-frequency microcurrent flows from each planar electrode 2 through the conductive gel layer 6 to the body, and blood circulation is improved because low-frequency treatment of the circulatory system such as blood is performed. Therefore, this pressure ulcer mat with electrode can sufficiently prevent floor rubbing even when used for a long time due to the effect of reducing body pressure and improving blood circulation.
[0029]
【The invention's effect】
As is clear from the above explanation, the pressure ulcer mat with electrode of the present invention not only reduces the pressure of the body but also improves blood circulation, so that it can significantly prevent floor rubbing even when used for a long period of time. Play.
[Brief description of the drawings]
FIG. 1 is a plan view of a pressure ulcer mat with electrodes according to an embodiment of the present invention.
FIG. 2 is a front view of the pressure ulcer mat with electrodes (one side shows a state where a cover is peeled off).
FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG.
FIG. 4 is an explanatory view showing a use state of a conventional pressure ulcer mat.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mat 1a Non-adhesive polyurethane gel layer 1b Concave part 2 which embeds a plane electrode 2 Plane electrode 2a Terminal part 2b Lead wire 3 Through-hole 4 Cover material 5 Adhesive layer 6 Conductive gel layer

Claims (1)

By reacting a polyol having an alkylene oxide chain with a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, or by reacting a polyurethane polyol prepolymer having an alkylene oxide chain with a polyurethane polyisocyanate prepolymer having an alkylene oxide chain A flat electrode made of a flexible carbon fiber non-woven fabric is provided on the upper surface of the mat made of the flexible polyurethane gel, and the upper surface of the flat electrode is covered with a conductive gel layer made of polyurethane gel containing an ionic compound. A pressure ulcer mat with electrodes, wherein a number of through holes penetrating in the transverse direction are formed in the mat, and the inner surface of the through hole is covered with a non-adhesive polyurethane gel layer .

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