JP4076432B2 - Backache prevention mat - Google Patents

Description

【００５９】
続いて、反発弾性の異なる３層の発泡マット素材（長さ１９５０ｍｍ×幅９７０ｍｍ）を積層させ、図６に示すように、上層の発泡マット素材と中間の発泡マット素材との間（図６では便宜的に中間の発泡マット素材１４のみを表示する）に、短冊状の上記姿勢適化層２０を１２枚、５０ｍｍ間隔で配置して挟み込み、目的の腰痛予防マット１を作製した。
各層の厚さを、下記比較例１の場合と併せて表２に示す。また、各発泡マット素材の諸特性を表３に示す。なお、表３中、ＰＵはポリウレタンフォームを表している。
【００６０】
（比較例１〜２）
ウレタンフィルムを用いずに、シリコーンゲルのみを発泡マット素材で挟み込んだ以外は、上記実施例１と同様にして比較例１に係るマットを作製した。積層構造、及び各発泡マット素材の諸特性を、表２及び表３にそれぞれ示す。
また、比較例２として、一般にクッション性が硬く腰痛予防効果があるといわれている、厚さ８５ｍｍのポリエステル繊維製の市販マットを用いた。
【００６１】
【表２】

【表３】

【００６２】
次に、上記実施例１、及び比較例１〜２に係るマットに対し、人体がマットを押圧する局部的なモデルとして、腰部の形状を模した加圧子の上におもりを載せ、７〜２２ｋｇまで５ｋｇ刻みに荷重を変化させたときの加圧子の沈み込み量、及び加圧子中央部の圧力を測定した。沈み込み量を表４、及び図７に、また圧力を表５、及び図８に示す。
測定結果から、実施例１に係る腰痛予防マットは、比較例１に比べて、沈み込み量が小さく、比較例２と比べて、沈み込み量が大きいことがわかる。これにより、実施例１に係る腰痛予防マットは、特に腰部が沈み込まず、浮き上がらず、自然な姿勢が得られることにより、腰痛の予防・軽減に有効であることが示唆された。また、圧力の測定結果では、実施例１と比較例１は同程度の柔らかさを有し、身体の特定部位への圧力集中を防ぐことができるといえる。比較例２の場合は、圧力値が高いため特定部位への圧力集中により、寝たきりの患者が使用する場合、床擦れないし褥瘡を誘発する可能性が高いといえる。
【００６３】
【表４】

【表５】

【００６４】
【発明の効果】
以上、本発明の腰痛予防マットは、発泡マット素材中に面方向に変形して弾性力で体を支え腰の過度の沈み込みを防止する姿勢適化層が設けられ、姿勢適化層は体圧によって面方向に変形して張力を示すシート状のゲルとその少なくとも片面にゲルよりも面方向のバネ定数が大きくゲルの面方向の変形を抑制する弾性フィルムとが積層されてなるため、患者が寝たときに腰が沈み込み過ぎず、したがって腰痛を好適に予防もしくは軽減することができる。
【００６５】
【表６】

【００６６】
【発明の効果】
以上、本発明の腰痛予防マットは、発泡マット素材中に、シート状のゲルと弾性フィルムとを積層させた姿勢適化層を設けたため、患者が寝たときに腰が沈み込み過ぎず、したがって腰痛を好適に予防もしくは軽減することができる。
【００６７】
また、カテキンを付着させた通気性のシートを組み合わせた場合には、優れた抗菌性、及び脱臭性を得ることができ、患者を清潔に保つことができる。
【図面の簡単な説明】
【図１】 実施の形態（１）に係る腰痛予防マットを示す斜視図である。
【図２】 実施の形態（１）に係る腰痛予防マットの断面図である。
【図３】 実施の形態（２）に係る腰痛予防マットの断面図である。
【図４】 実施の形態（３）に係る腰痛予防マットの断面図である。
【図５】 実施の形態（４）に係る腰痛予防マットの断面図である。
【図６】 実施例における姿勢適化層の配置状態を示す図である。
【図７】 実施例の測定結果を示すグラフである。
【図８】 実施例の測定結果を示すグラフである。
【符号の説明】
１ 腰痛予防マット
１０ 発泡マット素材
１１ 発泡マット素材
１２、１２Ａ、１２Ｂ、１２Ｃ 発泡マット素材
１３、１３Ａ、１３Ｂ、１３Ｃ 発泡マット素材
２０ 姿勢適化層
２１ シート状のゲル
２２ 弾性フィルム
３０ 通気性のシート
Ｓ 隣接面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a back pain prevention mat. More specifically, a back pain prevention mat that is used while placed on a bed, etc., on which a patient such as a healthy person or an elderly person sleeps, prevents back pain from occurring or reduces back pain symptoms. Belongs to the technical field.
[0002]
[Prior art]
Low back pain is a typical disease that is now called national illness, and it has been commonly seen among elderly people as one of the aging phenomena, but recently, not only elderly people and bedridden patients but also healthy people. This tendency is also pointed out by young people. If this low back pain is left unattended, it may cause problems in walking or cause internal organ diseases, so preventing and treating low back pain has become an urgent issue.
[0003]
The cause of low back pain includes visceral diseases, stress, etc. Among them, posture has the greatest influence. In other words, the poor posture increases the curvature of the lumbar vertebra, causing excessive strain on the lower back muscles and bones and causing back pain. Therefore, in order to prevent and reduce low back pain, it is important to improve posture in everyday life and not place a burden on the lower back, and also during sleep, which accounts for a large percentage of the time of the day. is there. In particular, when a soft bed is used, the trunk (the torso) heavier than the shoulders and legs dents the center of the bed, and the waist sinks, causing back pain. On the other hand, when a hard bed is used, the lowering of the waist can be suppressed, but the waist is raised, and a natural posture cannot be obtained. Further, there is a problem that pressure concentrates on a specific part in contact with the bed and blood circulation failure is likely to occur. Therefore, for a bedridden patient, there is an increased risk of not rubbing the floor or inducing pressure ulcers. Therefore, it is desired that the bed has a good body pressure dispersion that suppresses the sinking of the waist, can maintain a natural posture that does not lift, and does not concentrate pressure on a specific part.
[0004]
By the way, this applicant pays attention to the pressure ulcer (floor rub) problem that occurs when a certain posture is continued on the bed for a long time such as a bedridden elderly person, and already has a pressure ulcer prevention mat for preventing this. It has been proposed (see Patent Document 1). This pressure ulcer prevention mat has a pressure receiving optimization part made of a silicone gel material in the middle of the pressure receiving cross section direction of the foam mat material such as urethane foam. As a whole, a so-called “koshi” is given, and an excessive pressure concentration on the sacral region or the like, which is a frequent site of pressure ulcer, can be prevented while maintaining a suitable posture in the supine position.
In the above invention, the entire mat must be softened to some extent in order to prevent pressure concentration on a specific part, and although a silicone gel material is used for the pressure receiving optimization part, particularly from the viewpoint of preventing low back pain. When seen, there was room for improvement, such as suppressing depression of the waist more.
[0005]
In addition, as mentioned above, (Patent Document 2), (Patent Document 3), and the like can be cited as other techniques for dispersing body pressure by combining silicone gels and the like. The effect was not sufficient.
[0006]
It is also important for elderly people who are bedridden to sterilize pressure ulcer-derived bacteria adhering to mats, etc. to prevent their growth and maintain cleanliness. Therefore, it has also been desired that the odor can be effectively deodorized.
[0007]
[Patent Document 1]
JP 2002-78757 A
[Patent Document 2]
JP 2002-58710 A
[Patent Document 3]
JP-A-9-271424
[0008]
[Problems to be solved by the invention]
Therefore, in view of the above-described conventional situation, the present invention can obtain a natural posture as when standing on the mat and can prevent concentration of pressure on a specific part. It is an object of the present invention to provide a novel back pain prevention mat that can effectively prevent and reduce back pain without straining muscles.
[0009]
Another object of the present invention is to provide a low back pain prevention mat that is excellent in antibacterial and deodorizing properties and can keep patients clean.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the back pain prevention mat according to the present invention is deformed in the plane direction in the middle of the pressure receiving direction of the foam mat material as claimed in claim 1. Waist Is provided with a posture optimization layer that prevents excessive sinking of the posture optimization layer, Asuka-C-type hardness of 50 or less and penetration (JIS K-2207) of 250 or less, and one side of the gel sheet has a hardness of JIS A-15 to 90 (JIS K-6301) It is composed of laminated elastic films The elastic film is formed so that the spring constant in the surface direction of the posture optimization layer is larger than that of the gel sheet, and the elastic film suppresses deformation in the surface direction of the gel sheet. It is characterized by that.
[0011]
According to the above configuration, when the patient lies down, the foam mat material deforms in the thickness direction to support the body, and at the same time, the sheet-like gel stretches and deforms in the surface direction, and the elastic film is excessive in the sheet-like gel. By suppressing the stretching deformation of the body, excessive depression of the waist is prevented, and a natural posture can be obtained at the time of supine. In particular, the balance of the spring constant in the surface direction of the sheet-like gel and elastic film constituting the posture optimizing layer moderately suppresses the stretching deformation in the surface direction of the sheet-like gel, particularly excessive depression of the waist. To prevent. In addition, since the sheet-like gel is deformed in the thickness direction together with the foam mat material, it is possible to prevent excessive pressure concentration on a specific part that does not rub the floor and induce pressure ulcer. Here, the elastic film refers to a thin film-like material that is deformed in the surface direction and has elasticity, and thus includes not only a general resin film but also a rubber sheet, a stretchable cloth, and the like. is there.
[0012]
Claim 2 A posture optimization layer is provided in the middle of the pressure-receiving direction of the foam mat material to deform in the surface direction to prevent excessive depression of the waist, and the posture optimization layer has an Asker C-type hardness of 50 or less and a penetration (JIS) K-2207) a gel sheet of 250 or less, and an elastic film having a hardness of JIS A-15 to 90 (JIS K-6301) is laminated on both sides of the gel sheet, and the posture optimization layer The elastic film is formed to have a spring constant in the surface direction larger than that of the gel sheet, and the elastic film suppresses deformation in the surface direction of the gel sheet. It is characterized by that.
[0013]
According to the said structure, the back pain prevention mat is comprised combining a some foaming mat raw material and a posture optimization layer. And since the rebound resilience of the upper layer is made smaller than that of the lower layer, the patient is kept in a correct posture as a whole and the waist is settled in a natural position while maintaining the action of dispersing body pressure.
[0014]
Claim 3 is a claim. 1 or In the back pain prevention mat according to 2, Gel sheet is silicone gel It is characterized by being.
[0015]
According to the above configuration, the rebound resilience value of the upper foam mat material is optimized from the viewpoint of preventing excessive depression of the waist while dispersing body pressure by the body sinking into the upper mat layer. The
[0016]
Also, Gel sheet Is a silicone gel having an Asuka-C hardness of 50 or less and a penetration (JIS K-2207) of 250 or less.
[0017]
Also The waist In the pain prevention mat, the elastic film is a urethane film having a hardness (JIS K-6301) JIS A15-90.
[0018]
Also The waist In the pain prevention mat, the sheet-like gel is a silicone gel having an Asker C hardness of 50 or less and a penetration (JIS K-2207) of 250 or less.
[0019]
Also The waist The pain prevention mat is characterized in that a foam mat material having a lower hardness than other parts is provided on both sides in the body length direction of the back pain prevention mat.
[0020]
Up Structure According to the composition, an optimum form of the sheet-like gel and the elastic film is specified. These are deformed when body pressure is applied, and effectively prevent further depression of the waist due to the elastic force of returning to the original.
[0021]
Also The waist In the pain prevention mat, the portion provided with the foam mat material with low hardness is characterized by being integrated with the posture optimizing layer and the mat material with high hardness along the pressure receiving direction.
[0022]
According to the above configuration, since the patient's head and feet are supported by a relatively soft mat material, the lowering of the waist is suppressed, the body is stable, and the waist is not burdened when getting up from the bed .
[0023]
Also The waist The pain prevention mat is characterized in that adjacent surfaces of the foam mat material having a low hardness and the foam mat material having a high hardness are inclined.
[0024]
According to the above configuration, when the entire back pain prevention mat is folded or conversely expanded, the whole unity is ensured and the handling is improved.
[0025]
further The waist A breathable sheet having catechin attached thereto is combined with the pressure-receiving surface of the pain prevention mat.
[0026]
According to the above configuration, the patient feels as if the change from the hard foam mat material to the soft foam mat material is continuous, and comfort is improved.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
First, Embodiment (1) of this invention is demonstrated based on FIG.1 and FIG.2. The back pain prevention mat 1 of FIG. 1 is provided with a plurality of urethane foam foam mat materials 10 and 11, and is generally configured by providing a posture optimization layer 20 in the middle of the pressure receiving direction of the foam mat materials 10 and 11. ing. This back pain prevention mat 1 is generally placed on a bed, tatami mat, floor or the like, and is used when a patient sleeps on the mat.
[0030]
As shown in the cross-sectional view of FIG. 2, the posture optimization layer 20 has an elastic film 22 laminated on one side of a sheet-like gel 21. When a patient lies on the back pain prevention mat 1, the body sinks into the foam mat material 10 made of urethane foam, the contact area increases, and the body pressure is dispersed. And if it sinks more than a certain amount, the sheet-like gel 21 and the elastic film 22 are deformed mainly in the surface direction (also slightly deformed in the thickness direction), and the body is supported by the elastic force, and the waist is excessively depressed. To prevent intrusion. In particular, in the present invention, since the elastic film 22 having a large spring constant in the surface direction is laminated on the sheet-like gel, the sheet-like gel 21 is prevented from stretching in the surface direction. Subsidence is more suppressed than when 21 is used alone, the waist is stabilized at the correct position, and back pain can be effectively prevented.
[0031]
As the polyurethane foam constituting the foam mat materials 10 and 11, conventionally known ones can be appropriately selected and used. Specifically, a foam made of diisocyanate and polyol, and a flexible foam having a relatively small rebound resilience and slow deformation return is suitably used. Here, the rebound resilience is defined in JIS K-6403, and is obtained from the rebound distance when a steel ball is dropped on a sample. Further, the upper surface of the foam mat material 10 may be a flat plate shape as shown in FIG.
[0032]
Further, as shown in FIG. 2, when the plurality of foam mat materials 10 and 11 are laminated so as to sandwich the posture optimizing layer 20, the rebound resilience of the upper foam mat material 10 is reduced to the lower foam mat material 11. It is preferable to make it smaller than that. Specifically, it is optimal to set the rebound resilience of the upper foam mat material 10 to 3 to 20% and the rebound resilience of the lower foam mat material 11 to 30 to 80%. In this way, the upper foam mat material 10 softly receives the body and disperses the body pressure, while the lower foam mat material 11 supports the posture optimizing layer. It can be stabilized in the correct posture.
[0033]
The thicknesses of the foam mat materials 10 and 11 are not particularly limited, and can be set as appropriate according to the resilience of the foam mat material itself. In general, it is appropriate to set so that the thickness of the lumbago prevention mat 1 is about 50 to 200 mm.
[0034]
The sheet-like gel 21 can be used as long as it is deformed by body pressure and exhibits tension. For example, a silicone gel sheet or the like is applicable, and among them, a silicone gel having an Asker hardness (C type) of 50 or less and a penetration (JIS K-2207) of 250 or less is particularly preferably used. Specific examples of such silicone gel include αGEL (Alpha Gel: registered trademark) manufactured by Geltech.
[0035]
The thickness of the sheet-like gel 21 varies depending on the material and thickness of the foam mat materials 10 and 11, the type of the elastic film 22, and the like, but is not particularly limited, but is generally about 0.5 to 5 mm. Is appropriate. In addition, the thickness of each part may be changed according to the pressure receiving state, such as reducing the thickness of the sheet-like gel 21 at a part where the body pressure value is small, such as a part corresponding to the shoulder or knee of the patient. it can.
[0036]
As the elastic film 22, any material can be used as long as it has a spring constant larger than that of the sheet-like gel 21, is deformed by body pressure, and has elasticity. Specific examples include various resin films, rubber sheets, and fabrics such as spandex. Among them, a urethane film having a hardness (JIS K-6301) of JIS A15 to 90 is particularly preferably used because it supports the body pressure softly in combination with the sheet-like gel 21. The spandex is a cloth rich in stretch obtained from a fiber obtained by spinning polyester and nylon in polyurethane.
[0037]
The thickness of the elastic film 22 is appropriately set according to the material and hardness of the elastic film itself, the resilience and thickness of the foam mat materials 10 and 11, the hardness and thickness of the sheet-like gel 21, and the like. be able to. In general, when the elastic film 22 is laminated on one side of the sheet-like gel 21 as shown in FIG. 2, the thickness is preferably about 30 to 500 μm.
[0038]
The lamination of the sheet-like gel 21 and the elastic film 22 can be performed by a general method. For example, a method of sticking the elastic film 22 to the sheet-like gel 21 via an adhesive, or curing the gel into a sheet shape on the elastic film 22 and integrally forming it can be appropriately employed.
When sticking through an adhesive, the primer can be applied to the surface of the sheet-like gel 21 and dried as necessary. As the types of the primer and the adhesive, in consideration of the materials of the sheet-like gel 21 and the elastic film 22, those that have a good adhesion state can be appropriately selected. For example, when bonding a silicone gel sheet and a urethane film, PR-700 (trade name; manufactured by Arteco) as a primer, and industrial instant adhesives EE, E50, V2 (trade name; Arteco) as an adhesive. Aron Alpha (trade name; manufactured by Toa Gosei Chemical Co., Ltd., registered trademark) and the like can be exemplified, but are not limited thereto.
In the case of integral molding, for example, various primers are applied to the elastic film 22 as necessary, and an uncured gel raw material is further poured onto the elastic film 22 to obtain a predetermined thickness, which is then heated and cured. Can be obtained.
[0039]
Furthermore, in the case of fixing the position by sandwiching the posture optimizing layer 20 between the upper and lower foam mat materials 10 and 11, the sheet-like gel 21 and the elastic film 22 are not necessarily bonded, and are just stacked. You can also
[0040]
When the back pain prevention mat 1 is configured by combining the above-described members, the foam mat material 10 and the foam mat material 11 are integrally bonded or adhered with a double-sided tape so that the arrangement of the members does not deviate. Can be In that case, the back pain prevention mat 1 may be bonded at the peripheral edge, that is, at the portion where the foam mat material 10 and the foam mat material 11 in FIG. A hole may be formed, and the foam mat material 10 and the foam mat material 11 may be bonded to each other through the through hole.
[0041]
In this embodiment (1), the posture optimizing layer 20 is provided in the vicinity of the center of the pressure receiving surface of the foam mat material as shown in FIG. The pressure receiving surface may be provided over the entire surface, or a plurality of strip-like posture optimization layers may be arranged side by side between the foam mat material 10 and the foam mat material 11. Further, the posture optimization layer may be provided only on the pressure-receiving surface of the waist portion of the foam mat material.
[0042]
In FIG. 2, the elastic film 22 is laminated on only one side of the sheet-like gel 21, but can be laminated on both sides.
[0043]
Next, an embodiment (2) of the present invention will be described. The low back pain prevention mat 1 of FIG. 3 includes a posture optimization layer 20 composed of a sheet-like gel 21 and an elastic film 22, and a plurality of foam mat materials 10, 13 It is configured to be sandwiched from above and below. And lower layer foam mat material 13 Is divided into three parts, that is, foam mat material with relatively low hardness on both sides in the body length direction (arrow direction in the figure) of the back pain prevention mat 1 13A , 13C And the foam mat material is harder (harder) than that inside 13B And are provided.
When the patient sleeps on this back pain prevention mat 1, the head and legs are soft foam mat material 13A , 13C It is very effective in suppressing the lowering of the waist.
[0044]
Foam mat material placed on both sides in the length direction 13A , 13C The hardness varies depending on the arrangement and thickness of each member and is not particularly limited. However, in the case of the laminated structure as shown in FIG. 3, for example, a soft foam mat material on both sides 13A , 13C Has an Asker hardness (F type) of about 5 to 100, and an inner foam mat material 13B Preferably has an Asker hardness (F type) of about 100 to 200.
[0045]
The back pain prevention mat 1 in FIG. 3 is a foam mat material having low hardness. 13A , 13C However, it is positioned below the posture optimizing layer 20, but is not limited to this. For example, soft foam mat materials extending vertically can be combined on both sides in the body length direction. In addition to providing the hard foam mat material on the inside, for example, another hard foam mat material layer may be combined with the entire lowermost layer of the back pain prevention mat.
[0046]
Also, in FIG. 3, a soft foam mat material 13A , 13C In the part provided with, each member, that is, the upper foam mat material 10, the posture optimizing layer 20, and the lower soft foam mat material along the pressure receiving direction. 13A , 13C Are preferably integrated with each other. If it does in this way, when the backache prevention mat 1 whole is folded and accommodated, or conversely spread, arrangement of each member does not shift and handling nature improves.
When integrating, appropriate means such as bonding via an adhesive can be employed.
[0047]
In the low back pain prevention mat 1 of FIG. 3, the foam mat materials 12A and 12C having low hardness are positioned below the posture optimization layer 20, but the present invention is not limited to this. For example, the foam mat materials 12A and 12C extend vertically on both sides in the body length direction. Soft foam mat materials can also be combined. In addition to providing the hard foam mat material on the inside, for example, another hard foam mat material layer may be combined with the entire lowermost layer of the back pain prevention mat.
[0048]
In addition, in FIG. 3, in the portion provided with the soft foam mat material 12A, 12C, along the pressure receiving direction, each member, that is, the upper foam mat material 10, the posture optimization layer 20, and the lower soft foam mat material 12A. , 12C are preferably integrated with each other. If it does in this way, when the backache prevention mat 1 whole is folded and accommodated, or conversely spread, arrangement of each member does not shift and handling nature improves.
When integrating, appropriate means such as bonding via an adhesive can be employed.
[0049]
Next, an embodiment (3) of the present invention will be described with reference to FIG. The back pain prevention mat 1 in FIG. 4 is configured such that a posture optimization layer 20 in which an elastic film 22 is laminated on both sides of a sheet-like gel 21 is sandwiched between a plurality of foam mat materials 10 and 13, and The foam mat material 13 is composed of three members as in the above embodiment (2), and foam mat materials 13A and 13C having lower hardness than other parts on both sides of the back pain prevention mat 1 in the body length direction. Is provided.
In this embodiment, the adjacent surface S between the foam mat materials 13A and 13C having low hardness and the relatively hard foam mat material 13B on the inside is inclined. In this way, when the patient lies on the back pain prevention mat 1, the change from the soft foam mat materials 13A and 13C located under the head and feet to the hard foam mat material 13B on the inside suddenly occurs. In addition, since it is felt as if it were continuous, a more comfortable feeling can be given.
[0050]
The direction in which the adjacent surface S inclines is not limited to the case of FIG. 4, and it is needless to say that the reverse direction, that is, the inner foam mat material 13B may be configured to spread downward. Further, the adjacent surface S may be, for example, a “<” shape when viewed from the side.
Other configurations such as the hardness of the foam mat material are the same as those in the above embodiment (2).
[0051]
Next, an embodiment (4) of the present invention is shown in FIG. The back pain prevention mat 1 in FIG. 5 sandwiches a posture optimizing layer 20 in which an elastic film 22 is laminated on both surfaces of a sheet-like gel 21 between foam mat materials 10 and 11 of urethane foam. It is characterized by combining a breathable sheet 30 with catechin attached to the upper surface of the foam mat material 10. Since catechins provide high antibacterial and deodorizing properties, pressure ulcer-derived bacteria and the like are effectively sterilized, and the patient who sleeps on top can always be kept clean.
[0052]
As the air-permeable sheet 30, a general woven fabric or non-woven fabric can be appropriately selected and used. Specifically, a Toray field sensor (registered trademark) and the like can be mentioned. Further, a sheet of three-dimensional knitting such as Russell knitting can be used.
[0053]
As catechins, those extracted from plants such as tea leaves are used. In particular, tea husk produced in the process of producing a tea beverage is suitable as a raw material. Tea husks are produced in large quantities when green tea, black tea, oolong tea, and the like are produced, and are currently disposed of as industrial waste. However, the present invention can be used effectively. The tea husk also contains 6000-8000 mg / 100 g of catechins having antibacterial and deodorizing properties, as well as vitamin E (20-30 mg / 100 g), β-carotene (10-20 mg / 100 g), free acid (50-100mg / 100g), dietary fiber (3500-4500mg / 100g) and other useful ingredients, so there is no problem even if you touch the patient's body, in some cases absorb the above ingredients from the skin It is also possible to make it.
[0054]
When attaching the catechin to the breathable sheet 30, various means can be used, for example, a method of immersing a woven fabric or gauze in a tea extract, a tea extract on a woven fabric or gauze, etc. Examples thereof include a method of coating, a method of producing a woven fabric from fibers obtained by spinning raw materials mixed with fine tea powder, and the like. The amount of catechin attached at that time can be appropriately set in consideration of the obtained antibacterial properties.
[0055]
Further, as the breathable sheet 30, paper obtained by papermaking a raw material containing catechin can be used. This paper can be produced according to the conventional paper manufacturing method, for example, various raw materials such as pulp, ridges, honey, etc. are mixed with crushed tea, and if necessary, colorant, fiber, It can be produced by blending a sizing agent and the like, and by various paper machines such as a round net paper machine and a long net paper machine, or by paper making. Further, paper having normal air permeability may be produced by immersing it in a tea extract, or by applying a tea extract on the surface of the paper. In addition, in order to improve the touch etc., the paper to which these catechins are attached can be further combined with a woven fabric or the like as necessary.
[0056]
The breathable sheet 30 only needs to cover at least the pressure receiving surface, but may cover the entire outer peripheral surface of the back pain prevention mat 1.
Other specific configurations of the foam mat materials 10 and 11, the sheet-like gel 21, the elastic film 22, and the like are the same as those in the embodiment (1).
[0057]
【Example】
Hereinafter, the present invention will be described more specifically with reference to examples, but is not limited thereto.
Example 1
A target back pain prevention mat was prepared using a foamed mat material of urethane foam (manufactured by Bridgestone), a silicone gel (αGEL (registered trademark) manufactured by Geltech Co., Ltd.), and a urethane film (Esmer URS manufactured by Nippon Matai Co., Ltd.).
Specifically, first, a urethane film having a thickness of 100 μm was attached to one side of a silicone gel (length 700 mm × width 100 mm × thickness 2 mm) to prepare a posture optimization layer. When sticking, first, a primer (PR-700 manufactured by Arteco) was applied to the surface of the silicone gel, and then dried at room temperature for about 15 minutes, and further a cyanoacrylate adhesive (industrial industrial adhesive manufactured by Arteco). EE) was used to attach a urethane film.
The silicone gel had an Asker hardness (C type) of 25. Table 1 shows various properties of the urethane film.
[0058]
[Table 1]

[0059]
Subsequently, three layers of foam mat materials (length 1950 mm × width 970 mm) having different impact resilience are laminated, and as shown in FIG. 6, between the upper layer foam mat material and the intermediate foam mat material (in FIG. 6, For convenience, only the intermediate foam mat material 14 is displayed), and the above-mentioned posture optimization layers 20 in the form of strips are sandwiched and arranged at intervals of 50 mm to produce the desired back pain prevention mat 1.
The thickness of each layer is shown in Table 2 together with the case of Comparative Example 1 below. Table 3 shows various characteristics of each foam mat material. In Table 3, PU represents polyurethane foam.
[0060]
(Comparative Examples 1-2)
A mat according to Comparative Example 1 was produced in the same manner as in Example 1 except that only a silicone gel was sandwiched between foamed mat materials without using a urethane film. The laminated structure and various properties of each foam mat material are shown in Table 2 and Table 3, respectively.
Further, as Comparative Example 2, a commercially available mat made of polyester fiber having a thickness of 85 mm, which is generally said to have a hard cushioning property and a low back pain prevention effect, was used.
[0061]
[Table 2]

[Table 3]

[0062]
Next, with respect to the mats according to Example 1 and Comparative Examples 1 and 2, as a local model in which the human body presses the mat, a weight is placed on a pressurizer simulating the shape of the waist, and 7 to 22 kg. The amount of depression of the pressurizer when the load was changed in increments of 5 kg and the pressure at the center of the pressurizer were measured. The amount of subsidence is shown in Table 4 and FIG. 7, and the pressure is shown in Table 5 and FIG.
From the measurement results, it can be seen that the back pain prevention mat according to Example 1 has a smaller sinking amount than Comparative Example 1, and a larger sinking amount than Comparative Example 2. Thus, it was suggested that the back pain prevention mat according to Example 1 is effective in preventing and reducing back pain, in particular, because the waist portion does not sink, does not rise, and a natural posture is obtained. Moreover, according to the measurement result of pressure, it can be said that Example 1 and Comparative Example 1 have the same degree of softness and can prevent pressure concentration on a specific part of the body. In the case of Comparative Example 2, since the pressure value is high, it can be said that there is a high possibility that the bed will not rub and induce pressure ulcers when used by a bedridden patient due to concentration of pressure on a specific site.
[0063]
[Table 4]

[Table 5]

[0064]
【The invention's effect】
As described above, the lumbago prevention mat of the present invention is included in the foam mat material. A posture optimization layer that is deformed in the surface direction and supports the body with elastic force to prevent excessive sinking of the waist is provided, and the posture optimization layer is deformed in the surface direction by body pressure and exhibits a tension. And an elastic film that has a larger spring constant in the surface direction than the gel and suppresses deformation in the surface direction of the gel. Therefore, when the patient goes to bed, the waist does not sink too much, and therefore back pain can be suitably prevented or reduced.
[0065]
[Table 6]

[0066]
【The invention's effect】
As described above, since the back pain prevention mat of the present invention is provided with the posture optimization layer in which the sheet-like gel and the elastic film are laminated in the foam mat material, the waist does not sink too much when the patient goes to sleep, and therefore Back pain can be suitably prevented or reduced.
[0067]
Moreover, when combining the air permeable sheet | seat which adhered catechin, the outstanding antibacterial property and deodorizing property can be acquired, and a patient can be kept clean.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a back pain prevention mat according to an embodiment (1).
FIG. 2 is a cross-sectional view of a lumbago prevention mat according to Embodiment (1).
FIG. 3 is a cross-sectional view of a back pain prevention mat according to Embodiment (2).
FIG. 4 is a cross-sectional view of a back pain prevention mat according to Embodiment (3).
FIG. 5 is a cross-sectional view of a lumbago prevention mat according to Embodiment (4).
FIG. 6 is a diagram illustrating an arrangement state of a posture optimization layer in an example.
FIG. 7 is a graph showing measurement results of Examples.
FIG. 8 is a graph showing measurement results of Examples.
[Explanation of symbols]
1 Low back pain prevention mat
10 Foam mat material
11 Foam mat material
12, 12A, 12B, 12C Foam mat material
13, 13A, 13B, 13C Foam mat material
20 Posture optimization layer
21 Sheet gel
22 Elastic film
30 Breathable sheet
S Adjacent surface

Claims (3)

Orientation optimization layer for preventing sinking of excessive waist deformed to the pressure receiving medial in the plane direction of the foam mat material is provided, the attitude optimized layer Asker -C type hardness of 50 or less and a penetration (JIS K-2207) a gel sheet of 250 or less, and an elastic film having a hardness of JIS A-15 to 90 (JIS K-6301) is laminated on one side of the gel sheet, and the posture optimization layer A lumbago prevention mat, wherein the elastic film has a spring constant in a surface direction larger than that of the gel sheet, and the elastic film suppresses deformation in the surface direction of the gel sheet . A posture optimizing layer is provided in the middle of the pressure-receiving direction of the foam mat material so as to be deformed in the surface direction to prevent excessive depression of the waist. The posture optimizing layer has an Asker C-type hardness of 50 or less and a penetration (JIS) K-2207) a sheet of 250 or less gel, and an elastic film having a hardness of JIS A-15 to 90 (JIS K-6301) is laminated on both sides of the gel sheet, A lumbago prevention mat, wherein the elastic film has a spring constant in a surface direction larger than that of the gel sheet, and the elastic film suppresses deformation in the surface direction of the gel sheet . 3. The back pain prevention mat according to claim 1, wherein the gel sheet is a silicone gel .

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