JP2005118130A - Bedsore preventing mat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of instability at the time of transfer even while preventing bedsores by using air cells expanded and contracted. <P>SOLUTION: A non-expansion/contraction zone composed of a foamed material is disposed around an expansion/contraction zone provided with many air cells to/from which air is freely supplied/discharged by being connected to a pump. Especially, in the non-expansion/contraction zone, a first foamed material is arranged vertically in the longitudinal direction of a mat and a second foamed material more hardly deformed than the first foamed material is arranged on both sides in the vertical direction of the mat. Further, the expansion/contraction zone is biased upwards. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a floor slip prevention mat.

  Various bedsore prevention mats have been proposed so that sick people and elderly people who need long-term medical treatment on the bed do not cause so-called bedsores.

Conventional floor slip prevention mats are usually placed and used on a bed, but the waist strength of the bed itself is designed mainly for healthy people and is designed with a priority on sleeping comfort. Ease of use is not considered.
Therefore, even if a mat with a built-in air cell found in Japanese Patent Application Laid-Open No. 2003-33411 and Japanese Patent Application Laid-Open No. 7-265175 is placed on a bed, it is difficult for a person who needs care to be transferred.
This seems to be due to the fact that the side edge of the bed is easily bent during transfer, but a normal bed is also used by a healthy person. It has not been realized from the aspect of comfort.
In general, to prevent bedsores, many use the expansion and contraction of the air cell by supplying and exhausting air, but the cylindrical air cell as shown in JP-A-7-265175 lies on the full width of the bed. In some configurations, the top is very unstable.
Especially when using a transfer board like a wheelchair user, if there is an air cell up to the side edge of the mat, the board sinks into the air cell and the board is very difficult to use, and the air cell may be damaged at the edge of the board There was also.
JP2003-033411 JP 7-265175 A

  Accordingly, an object of the present invention is to eliminate instability during transfer while using an air cell that expands and contracts to prevent bed slip.

  According to the first aspect of the present invention, the above-mentioned disadvantage is solved by disposing a non-expandable zone made of a foam material around an expansion / contraction zone connected to a pump and provided with a large number of air cells that can be supplied and exhausted. Further, since the expansion / contraction zone is set, the air cell can be disposed only in a necessary portion, which is advantageous in terms of cost.

  In the invention according to claim 2, in the non-expandable zone, the first foam material is disposed vertically in the longitudinal direction of the mat, and the first foam material is less likely to deform than the first foam material on both sides in the vertical direction of the mat. Since the foam material of 2 is arranged, the end of the head and feet in the position where the body is always in contact with the first foam material can obtain the same sleeping comfort as a normal bed, The expansion / contraction zone is arranged only near the center of the body where there is a high possibility of bed slipping, which is efficient. In addition, since the second foam material that is difficult to deform is provided on both sides of the mat in the vertical direction, transfer with a sense of stability can be performed.

  The invention according to claim 3 is characterized in that the expansion / contraction zone is disposed at a position deviated in the vertical direction of the mat so that the area above the expansion / contraction zone of the first foam material and the area below the expansion / contraction zone are Since the areas are different, the expansion / contraction zone can be located only in a place where it is necessary to prevent bed slippage.

  Further, the invention according to claim 4 is characterized in that the second foam material is relatively hard because a linear recess is formed in the width direction at least at a position in contact with the expansion / contraction zone. A hard-to-deform mat is easily deformed in the vertical direction, and is easily applied by a bed with a rotating reclining mechanism.

  According to a fifth aspect of the present invention, a cover portion is disposed above the expansion / contraction zone and the non-expansion / contraction zone, and a position corresponding to the expansion / contraction zone of the cover portion and the non-expansion / contraction zone are defined. Since the appearance or material is different at the corresponding position, even if the expansion / contraction zone is covered by the cover, the user or caregiver can discriminate the expansion / contraction zone from the appearance and feel, etc. You can set your body.

  In the invention according to claim 6, the air cells in the expansion / contraction zone are arranged so that the gaps in the longitudinal direction of the mats of the individual air cells and the linear recesses are substantially aligned. Can be made more supple.

  Furthermore, in the invention according to claim 7, the air cell in the expansion / contraction zone includes a first mat sheet and a second mat sheet each having a plurality of convex shells each having an opening on one side. 3 × 3, etc., because each of the first and second mat sheets is formed by abutting up and down so that the openings of the convex shell portions overlap each other. It is suitable for unitization of a small area, and the manufacturing cost can be reduced.

(First embodiment of the present invention)
Hereinafter, an embodiment of a floor slip prevention mat according to a first embodiment of the present invention will be specifically described with reference to the drawings.

  FIG. 1 is an explanatory view showing a usage state of the floor slip prevention mat A according to the present embodiment, FIG. 2 is an explanatory view in plan view of an expansion / contraction zone B of the mat A, and FIG. 3 is an expansion / contraction zone B of the mat A FIG. 4 is an explanatory view of the mat unit a as viewed from the side.

The floor slip prevention mat A is largely divided into an expansion / contraction zone B and a non-expansion / contraction zone H. In the expansion / contraction zone B, as shown in FIG. 2, a large number of air cells arranged on a synthetic resin sheet are arranged in a first air cell group 2A and a second air cell group in which air is supplied and discharged at alternate timings. The air cell 110 belonging to the first air cell group 2A and the air cell 120 belonging to the second air cell group 2B are arranged adjacent to each other. In FIG. 2, 310 is a first supply / discharge pipe of the first air cell group 2 </ b> A, 320 is a second supply / discharge pipe of the second air cell group 2 </ b> B, and both pipes 310, 320 are connected via the flow path switching valve 400. The pump P is connected in communication. The air cells 110 and 120 communicate with the first and second supply / discharge pipes 310 and 320 through the communication pipe 4. The flow path switching valve 400 is controlled by the control unit 7 so as to switch the air air flow path every predetermined time set in advance, and the air air flow path communicating with the pump P is closed. In the case, it is configured to open to the atmosphere.

  With the above configuration, when the pump P is driven, air is alternately filled into the first air cell group 2A (outlined among the air cells displayed in FIG. 2) and the second air cell group 2B. Therefore, each air cell 110 and 120 repeats a change in which when the air is not filled, the weight of the user is added and the body is deflated, and when the air is filled, the air cells 110 and 120 are expanded. Moreover, since the air cells 110 and 120 are strong, they do not collapse when they are deflated, and the time until they expand is shortened and the feeling of use is improved.

A non-expansion / contraction zone H is disposed around the expansion / contraction zone B, and the mat base 1 is constituted by the expansion / contraction zone B and the non-expansion / contraction zone H.
Specifically, the expansion / contraction zone B is sandwiched between the upper mat portion 10 and the lower mat portion 11, and the upper mat 10 receives the head side.
The lower mat portion 11 receives the leg portion, and the upper mat portion 10 and the lower mat portion 11 have different areas, and the expansion / contraction zone B is biased upward by enlarging the lower mat portion 11. Is done.

This is because the position where it is necessary for the body to prevent bed slipping is from the buttocks to the neck. Therefore, the arrangement of the expansion / contraction zone B just above the center of the body is efficient without problems.
The upper mat portion 10 and the lower mat portion 11 are made of the same material. Specifically, a soft urethane foam (model EFF, hardness 58.8N, density 21 kg / cubic meter) manufactured by INOAC is suitable but generally soft. The urethane foam is not limited to this as long as it is made. Further, if the upper surface is subjected to wavy uneven processing (so-called profile processing), the body can be better received.

  Side cushions 12 are disposed on both sides of the expansion / contraction zone B and the upper and lower mat portions 10 and 11. The side cushions 12 are also disposed at the upper and lower ends of the mat base 1 and are made of a material that is larger in density and hard to be deformed than the upper and lower mat portions 10 and 11. Specifically, rubber like (model HR-80, density 75 kg / cubic meter) manufactured by INOAC is suitable. In this case, the upper and lower mat parts 10 and 11 have a property of being more than three times in density and difficult to deform.

Note that the difficulty of deformation in the present invention takes into account the thickness, shape, etc. in addition to the properties of the material such as density, hardness, compressive residual strain, etc. Therefore, the difficulty of deformation in the final state is measured. To be judged.
The side cushion 12 has a plurality of recesses 13 formed in a straight line at equal intervals in the width direction. The depth of the recess 13 is about one third of the thickness of the side cushion 12 and may be formed on both upper and lower surfaces, but in this embodiment, it is formed only on the upper surface.
Since the recess 13 is linear in the width direction, the side cushion 12 itself is easily deformed in the longitudinal direction, but is difficult to deform in the width direction.
Further, in this embodiment, the gaps 14 and the recesses 13 in the longitudinal direction of the mat base portion 1 of the individual air cells 110 120 are substantially aligned as shown by the straight line L. Therefore, the longitudinal direction of the mat base portion 1 itself. This facilitates the ease of deformation in the direction. (See also Fig. 5)

It should be noted that the recess 13 of the side cushion 12 may be formed only at a position at least in contact with the expansion / contraction zone B.
The covering portion 15 is covered with the mat base portion 1 configured as described above. The cover portion 15 includes a high repulsion portion 16 and a low repulsion portion 17. The high repulsion part 16 is disposed corresponding to the entire width of the position where the expansion / contraction zone B of the mat base 1 is present, and different positions are used as the low repulsion part 17.
The high resilience portion 16 has a first object that it can be determined from the outside that the expansion / contraction zone B and the recess 13 are formed, and it is also effective to change the color. If it is only achieved, a change in color alone may be sufficient.
However, it is said that a low resilience material (for example, a low resilience foam type EGR-2 manufactured by INOAC) is preferable for prevention of bedsores.

Therefore, although all the foam materials such as the cover 15 and the upper and lower mat portions 10 and 11 are suitable for low resilience materials, they have a high cost disadvantage. Therefore, in this embodiment, the upper and lower mat portions 10 and 11 are high as described above. A low-repulsive material is used only for the cover portion made of a repulsive material.
In addition, since the expansion / contraction zone B has a sufficient floor slip prevention effect in the expansion / contraction zone B itself, it is not necessary to use a low-repulsive material. A section is formed in the portion 17 to achieve the above-described discrimination effect and cost reduction.
Note that the cover 18 can be covered further above the cover 15 as necessary.

Therefore, it is desirable that the cover 18 be color-coded so that the corresponding position of the expansion / contraction zone B can be recognized in appearance.
As described above, the expansion / contraction zone B is more easily deformed in the longitudinal direction than other positions. Therefore, the expansion / contraction zone B is sufficiently applicable even when using a bed body (not shown) having a reclining mechanism, and the reclining fulcrum is Since it is around a general waist position, it matches the expansion / contraction zone B, which is very convenient.

Of course, despite the fact that the side cushion 12 itself is easily deformed in the longitudinal direction, the side cushion 12 itself is not easily deformed in the width direction. Even so, there is an effect that the transfer can be performed smoothly.

Next, details of the expansion / contraction zone B will be described.
The expansion / contraction zone B is composed of a combination of mat units a. Regarding the molding of the mat unit a, as shown in FIG. 3 and FIG. The sheets are integrally formed so as to be provided, and the sheets are abutted and connected so that the openings overlap each other. Thus, each air cell is constituted by a pair of upper and lower shell portions.
In the case of the floor slip prevention mat A of the present embodiment, a substantially square sheet in which a total of nine air cells of 3 × 3 are formed as one mat unit a so that the mat has a desired size (width). The expansion / contraction zone B is configured by appropriately connecting the units a. Specifically, in this embodiment, six sets of mat units a are used, and the air cells are arranged in 6 × 9.

  In connecting the mat units a, any appropriate means can be used. However, in the present embodiment, the mat units a can be connected to each other via button-type connecting portions 3 provided on each side of the mat unit a as shown in the figure. . 31 is a male button, and 32 is a female button. Two buttons are provided on adjacent sides of the mat unit a, and the arrangement positions thereof are positioned in a space formed between corners of adjacent air cells. . Therefore, the gap between the air cell and the air cell does not spread between the mat units a connected.

  In this way, by using the small mat unit a, it is possible to easily form the expansion / contraction zone B of various sizes, and when dealing with tears or air leaks, it can be handled by replacing each unit. Maintenance is also easy, which is extremely advantageous in terms of cost from both the manufacturing side and the user side.

  As shown in FIG. 4, the mat unit a includes a first mat sheet 41 in which a large number (nine) of upper convex shell portions 40 each having an opening on one side are arranged side by side in a lattice shape. The second mat sheet 43 having a large number (9) of lower convex shell portions 42 each having an opening formed in a lattice pattern is integrally molded with a molding material, and the first and second The mat sheets 41 and 43 are butted up and down so that the openings of the upper and lower convex shell portions 40 and 42 are overlapped, and connected by, for example, heat welding to form a large number (9 pieces) of air cells. Yes. The air cells 110 belonging to the first system and the air cells 120 belonging to the second system are communicated with each other by the connection pipe 4. As shown in FIGS. 3A and 3B, the connecting pipe 4 is formed by connecting connecting pipe components 50 and 51 integrally formed with mat sheets 41 and 43, respectively. Connected to the tube 5. Note that the connection between the first systems and the connection between the second systems between the adjacent mat units a and a are handled by providing a separate connection air pipe 5.

  In the configuration described above, in the present embodiment, as shown in FIG. 4, the upper convex shell portion 40 and the lower convex shell portion 42 constituting the air cell have different molding shapes. There is.

  That is, here, the upper convex shell 40 has a rectangular box shape such as a tofu shape, and the lower convex shell portion 42 has a truncated pyramid shape close to a pyramid shape, that is, substantially in a front view and a side view. It has a trapezoidal shape.

  When the upper convex shell 40 is formed in a rectangular box shape such as a tofu mold, the gap between adjacent air cells is reduced, so that an unpleasant rugged feeling is eliminated and the contact area with the body is large. When the pressure is reduced and the air is slightly exhausted, the upper surface is slightly recessed to wrap around the body, so that the body fits gently and the body pressure is reduced.

  On the other hand, if the lower convex shell portion 42 is a truncated pyramid shape close to a pyramid shape, it is difficult to deform and the volume is smaller than that of the upper convex shell portion 40, so that the pressure increases when weight is added. Since the waist becomes more firm, it is possible to prevent a so-called flooring phenomenon in which the entire air cell is greatly deformed and the body sinks greatly when exhausted.

  In the present embodiment, the molding material is made different between the upper convex shell portion 40 and the lower convex shell portion 42. That is, the upper convex shell portion 40 is formed of a molding material having a small friction coefficient, and the lower convex shell portion 42 is formed of a molding material having a large friction coefficient.

  The molding material having a small friction coefficient may be a synthetic resin that is a polymer compound, and the molding material having a large friction coefficient may be a synthetic rubber. In this way, when the lower convex shell portion 42 is formed of a molding material having a large coefficient of friction, when the main floor slip prevention mat A is placed on the bed, misalignment or the like is unlikely to occur and handling is good. It becomes.

  At this time, it is desirable to consider the plasticity of the molding material when selecting the molding material in consideration of the preferable degree of deformation of the upper and lower convex shell portions 40 and 42 described above. That is, it is also possible to obtain the same effect as changing the shape described above depending on the type of the molding material. Further, when paying attention to the anti-slip, an anti-slip pattern or the like can be attached to the lower surface of the lower convex shell portion 42 or directly formed on the surface. If it responds by making it different, a manufacturing process will not increase and it will become low-cost.

  By the way, in the present embodiment, since the lower convex shell portion 42 is formed in a truncated pyramid shape as described above, a sufficient gap 44 is generated between the adjacent convex shell portions, In the gap 44, supply and discharge pipes such as the first and second supply and discharge pipes 310 and 320, the connection air pipes, and other components 5 in which the above-described supply and discharge of air are performed alternately are easily arranged. (FIG. 4). Thus, the dead space can be utilized, and the entire mat can be made compact as compared with the conventional case where the supply / discharge pipe is mainly formed at the periphery of the floor slip prevention mat A.

Further, if the gap 14 between the upper convex shell portions 40 is used to directly ventilate the gap 12, the gap 14 becomes a lattice shape and extends over the entire expansion / contraction zone B as described above. For this reason, the wind can be uniformly distributed on the upper surface side of the expansion / contraction zone B, and a refreshing feeling can be given to the user M via a sheet or the like, and a dehumidifying effect is produced.
Further, the expansion / contraction zone B is easily deformed by the gap 14 and is easily deformed in the longitudinal direction in combination with being aligned with the recess 13 of the side cushion 12 as described above.
The expansion / contraction zone B does not necessarily have to be configured by connecting small mat units a as in the present embodiment, and may have a desired size directly.

  Here, the control of the expansion / contraction zone B according to the present embodiment will be described with reference to the block diagram shown in FIG.

  P is a pump for supplying air to the air cell group, and the pump P is divided into two systems, ie, a first air cell group 2A and a second air cell group 2B, so that air is supplied and discharged at alternate timings. The first supply solenoid valve 61 and the second supply solenoid valve 62 are connected in communication.

  The first supply solenoid valve 61 and the second supply solenoid valve 62 are connected to the supply / discharge pipes 310 and 320 that connect the pump P to the first air cell group 2A and the second air cell group 2B. A first pressure sensor S1 and a second pressure are provided downstream of the first supply solenoid valve 61 and the second supply solenoid valve 62 of the supply / discharge pipes 310 and 320, respectively. A sensor S2 is attached. Further, the first exhaust solenoid valve 61, the first pressure sensor S1, the second supply solenoid valve 62, and the second pressure sensor S2 are respectively connected to the first exhaust. An electromagnetic valve 63 for use and a second electromagnetic valve 64 for exhaust are provided.

  These electromagnetic valves 61 to 64, the pressure sensors S1 and S2, and the pump P are controlled by the control unit 7.

  That is, based on the sensing signals from the pressure sensors S1, S2, the driving and stopping of the pump P and the opening / closing operations of the electromagnetic valves 61 to 64 are executed in a timed manner, and the first air cell group 2A and the first The two air cell groups 2B are alternately supplied and discharged.

  V is a household power supply (AC 100 V), which feeds power to the pump P and is connected to the control unit 7 via a transformer T.

The control unit 7 includes a stimulation mode and a body pressure dispersion mode, and the stimulation mode and the body pressure dispersion mode are alternately performed as shown in FIG.
First, the air is supplied to the first air cell group 2A, the expansion state is maintained for a predetermined time (about 5 seconds), and then the air in the air cell is exhausted for a predetermined time.
Simultaneously with the exhaust of the first air cell group 2A, the supply of air to the second air cell group 2B is started, and the expanded state is maintained for a predetermined second, and the exhaust is performed for a predetermined time.
In each of the air cell groups, not all of the air is exhausted, but is maintained for a predetermined second (about 20 seconds) with some air remaining in any air cell. This state is referred to as a body pressure dispersion mode.
In order to maintain a part of the air, it may be defined by the exhaust time, but it may be controlled by the pressure sensors S1 and S2 so as to maintain a predetermined pressure.
In this way, the modes are alternately performed. In this way, the different modes are regularly performed alternately, so that a further bed slip prevention effect can be obtained.

It is explanatory drawing which shows the use condition of the floor slip prevention mat which concerns on this Embodiment. It is a typical explanatory view of the expansion / contraction zone of the floor slip prevention mat. It is the top view and bottom view which show the mat unit which comprises an expansion / contraction zone. It is explanatory drawing by the side view of a mat unit. It is explanatory drawing by the planar view of a mat base. It is a block diagram of a floor slip prevention mat. It is explanatory drawing of the supply / exhaust timing of an air cell.

Explanation of symbols

A floor slip prevention mat a mat unit B expansion / contraction zone H non-expansion / contraction zone 1 mat base 10 upper mat portion 11 lower mat portion 12 side cushion 13 dent 14 gap L straight line 15 covering portion

Claims (7)

A floor slip prevention mat characterized in that a non-expandable zone made of a foam material is disposed around an inflated / deflated zone provided with a large number of air cells connected to a pump and capable of supplying and exhausting air. In the non-expandable zone, the first foam material is disposed vertically in the longitudinal direction of the mat, and the second foam material that is less deformable than the first foam material is disposed on both sides of the mat in the vertical direction. The floor slip prevention mat according to claim 1, wherein the floor slip prevention mat is provided. The area of the area above the expansion / contraction zone of the first foam material and the area below the expansion / contraction zone are made different so that the expansion / contraction zone is disposed at a position deviated in the vertical direction of the mat. Item 3. The floor slip prevention mat according to item 1 or 2. The floor-slip prevention according to any one of claims 1 to 3, wherein the second foamed material is linearly formed with depressions in the width direction at least at a position in contact with the expansion / contraction zone. mat. A cover portion is provided above the expansion / contraction zone and the non-expansion / contraction zone, and the appearance or material is different between the position corresponding to the expansion / contraction zone of the cover portion and the position corresponding to the non-expansion / contraction zone. The floor slip prevention mat according to any one of claims 1 to 4. The floor slip prevention mat according to claim 4 or 5, wherein the air cells in the expansion / contraction zone are arranged so that the gaps in the longitudinal direction of the mats of the individual air cells and the recesses are substantially in a straight line. The air cell in the expansion / contraction zone integrally molds the first mat sheet and the second mat sheet each having a plurality of convex shells each having an opening on one side by a molding material. 7. The first and second mat sheets are formed by joining the upper and lower surfaces so that the openings of the convex shell portions overlap each other. Floor slip prevention mat.

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