Bedsore prevention mat

Abstract

The present invention relates to a bedsore prevention mat comprising: an outer cover (100) having an internal space; a filler (200) located inside the outer cover (100); and a plurality of valves (300), wherein compression caused by pressure applied to a patient is reduced via air and the filler (200) inside the outer cover (100), so that bedsores in the patient can be prevented.

Description

Bedsore prevention mat

[0001] The present invention relates to a self-inflating mat, and more particularly, to a bedsore prevention mat that prevents bedsores in a patient and enables convenient use by reducing the pressure applied to the patient's body by controlling the pressure of the inner cells of the mat through a valve.

[0002] Bedsores are skin injuries that occur when a patient's back, waist, shoulders, or elbows come into contact with the floor. They can be seen in patients who have been bedridden for a long time or in patients who cannot freely change positions due to cerebrospinal nerve disorders. They are prone to developing in areas subject to weight pressure, especially in areas where bones are exposed.

[0003] The skin in the compressed area initially turns pale because blood circulation is poor, and the surrounding area turns red and tender. Later, blisters form, and as it progresses, the blackened, gangrenous area falls off and ulcers form, producing a foul-smelling discharge.

[0004] Because severe bedsores are difficult to treat, prevention is paramount to preventing bedsores from developing. To prevent bedsores, the patient's body should be frequently cleaned to keep it clean at all times, and the affected area should not be subject to pressure.

[0005] In particular, to prevent bedsores, it is most important to change the patient's position several times a day. The bedding used for this should be soft and non-starched, and blankets and cushions should be light but have a certain amount of cushioning. Various cushions for preventing bedsores are sold on the market.

[0006] As an example, there is a bedsore prevention cushion having a structure in which a plurality of individual air chambers that are interconnected are arranged on a plane, as disclosed in Korean Patent Publication No. 10-2008-0075812 (Title: Bedsore prevention silicone cushion, Publication date: August 19, 2008).

[0007] However, since conventional cushions have a structure that only has air chambers inside, the pressure of the air chamber part is directly transmitted to the user's affected area, causing the user's affected area to be greatly compressed, making it ineffective in preventing bedsores and causing the user to feel uncomfortable when using it for a long time.

[0008] Additionally, there is a significant risk of injury to the user if any of the air chambers burst during use.

[0009] Accordingly, the present invention has been devised to solve the problems of the prior art as described above, and to provide a bedsore prevention mat that can prevent bedsores and the like in a patient by reducing the pressure applied to the patient's body.

[0010] In addition, the present invention aims to provide an efficient mat that can be used in various ways, such as for use as a bedsore prevention mat, as well as for use in car seats, stroller seats, cushions, and pillows.

[0011] In addition, the present invention seeks to provide a bedsore prevention mat that is lighter than a general mat and has a minimized volume when contracted, thereby making it easy to transport and store, and thus allowing convenient use by the user.

[0012] In addition, the present invention aims to provide an economical bedsore prevention mat that can be conveniently used by a patient alone, as air can be injected and discharged using only a valve that is easy to operate with a one-touch operation, without having a separate air inlet and air injection device.

[0013] In addition, the present invention aims to provide a bedsore prevention mat that is easy to remove air even in a folded state because it has a protruding air flow portion and a movement passage portion, unlike conventional air mattresses that take time to deflate due to poor air flow when folded.

[0014] In addition, the present invention provides a bedsore prevention mat that can distribute pressure to the part where the user sits on the mat with the greatest pressure, that is, the contact area of ​​the ischial femur, by forming a filler having a hollow groove portion in the filler to be softer than a filler not having a hollow groove portion, thereby reducing contact pressure and relatively transferring the pressure to the filler not having a hollow groove portion, thereby evenly distributing the applied pressure.

[0015] The problems solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0016] The present invention comprises an outer shell (100) having an internal space;

[0017] A filler (200) located inside the above outer shell (100);

[0018] It consists of a plurality of valves (300);

[0019] The above valve (300) comprises a first body (310) having an inner hollow shape having an inner screw portion (312) on an inner surface of one side, an outer inner screw portion (322) formed on an outer surface of one side, an inner screw portion (324) formed on an inner surface of one side, and a pair of coupling grooves (326) formed in an 'L' shape on an outer surface of the other side, a second body (320) having an inner hollow shape and coupled to one side of the first body (310), an opening / closing member (330) located inside the second body (320) in a disc shape having a protruding cylindrical coupling portion (332), an elastic member (340) located between the opening / closing member (330) and a support member (350), and a cylindrical shape having an outer screw portion (352) formed on an outer surface and a through hole (354) formed inside, coupled to the second body (320). It is composed of a supporting member (350) to be joined, a third body (360) that is joined to the supporting member (350) in the form of a cylinder with one side closed and an interior that is hollow, a fixing member (370) that is joined to the third body (360) in the form of a plate having a cylindrical joint portion (372) with one side protruding, and a pressing member (380) that is located inside the third body (360) and presses the opening / closing member (330).

[0020] It is characterized in that it is possible to prevent bedsores in a patient by reducing the pressure caused by the pressure applied to the patient through the air located inside the outer shell (100) and the filler (200).

[0021] The above outer shell (100) is composed of a first outer shell (110) located on one side and formed as a surface on which a user sits, and a second outer shell (120) located on the bottom surface of the mat by combining with the first outer shell (110), and is characterized in that it is formed of any one material among TPU (thermoplastic urethane), PV, and rubber.

[0022] The first outer shell (110) has a plurality of cells (111) formed in various shapes and sizes, a plurality of airflow parts (112) located between the vertices of the plurality of cells (111) and between the corners and vertices of the plurality of cells (111), and a plurality of adhesive parts (113) located between the corners of the plurality of cells (111).

[0023] The above second outer shell (120) is characterized by having a plurality of airflow parts (122) located between the vertices of a plurality of cells (111) and between the corners and vertices of a plurality of cells (111), and a plurality of adhesive parts (123) located between the corners of a plurality of cells (111).

[0024] The above air flow part (112) is formed in a form that has three or four moving passage parts (1121) and a protrusion (1123) formed in the center as a space for further air flow, and protrudes outward to have an internal space.

[0025] The above air flow portion (122) is characterized in that it is formed with an internal space and has three or four moving passage portions (1221) and a protrusion (1223) formed in the center as a space to allow more air to flow.

[0026] The above filler (200) is characterized by being composed of a first filler (210) that is completely filled inside and formed to correspond to the size and shape of the cell (111) of the first outer shell (110), a second filler (220) that has a groove (222) formed in the center of one side, a third filler (230) that has a groove (232) formed in the center of one edge, a fourth filler (240) that has a groove (242) formed in the center of one edge, and a fifth filler (250) that has a pair of first grooves (252) formed in the center and a plurality of second grooves (254) positioned connected to the edges of the first grooves (252).

[0027] The above-mentioned connecting portion (332) is formed to be smaller than the size of the internal space of the elastic member (340) so as to be able to move smoothly in the internal space of the elastic member (340), and is formed to be equal to or larger than the size of the hole (354) of the supporting member (350) so as to be able to block the hole (354).

[0028] Therefore, the present invention has the effect of preventing bedsores, etc. in patients by reducing the pressure applied to the patient's body.

[0029] In addition, the present invention can be used in various ways, such as in bedsore prevention mats, car seats, stroller seats, cushions, and pillows, and thus has an efficient effect.

[0030] In addition, the present invention has the effect of making it easier to transport and store by making it lighter than a general mat and minimizing its volume when contracted, thereby enabling convenient use by the user.

[0031] In addition, the present invention can inject and discharge air using only a valve that is easy to operate with a one-touch operation without having a separate air inlet and air injection device, so that a patient can conveniently use it alone and it is economical.

[0032] In addition, the present invention has the effect of making it easy to remove air even in a folded state because it has a protruding air flow portion and a movement passage portion, unlike conventional air mattresses that take time to deflate due to poor air flow when folded.

[0033] In addition, the present invention has the effect of distributing the pressure in the contact area of ​​the ischial femur, which is the part that receives the most pressure when a user sits on the mat, by forming the filler having a hollow groove portion in the filler to be softer than the filler not having the hollow groove portion, thereby reducing the contact pressure and relatively transferring the pressure to the filler not having the hollow groove portion, thereby evenly distributing the applied pressure.

[0034] Figures 1 and 2 are perspective views of the bedsore prevention mat of the present invention.

[0035] Figure 3 is a plan view and a cross-sectional view of the bedsore prevention mat of the present invention.

[0036] Figure 4 is an exploded perspective view of the bedsore prevention mat of the present invention.

[0037] Fig. 5 is a drawing showing a filler of the bedsore prevention mat of the present invention.

[0038] Fig. 6 is a perspective view of the valve of the bedsore prevention mat of the present invention.

[0039] Fig. 7 is an exploded perspective view of the valve of the bedsore prevention mat of the present invention.

[0040] The embodiments of the present invention may be modified in various ways, and the scope of the present invention should not be construed as being limited by the embodiments described below. These embodiments are provided to more fully explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of components in the drawings are exaggerated to emphasize a clearer description.

[0041] In the following description, terms such as "first," "second," etc. may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another. The terminology used in this application is solely used to describe specific embodiments and is not intended to limit the present invention.

[0042] Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0043] FIG. 1 and 2 are perspective views of the bedsore prevention mat of the present invention, FIG. 3 is a plan view and a cross-sectional view of the bedsore prevention mat of the present invention, FIG. 4 is an exploded perspective view of the bedsore prevention mat of the present invention, FIG. 5 is a drawing showing a filler of the bedsore prevention mat of the present invention, FIG. 6 is a perspective view of a valve of the bedsore prevention mat of the present invention, and FIG. 7 is an exploded perspective view of a valve of the bedsore prevention mat of the present invention.

[0044] As shown in Figures 1 to 4, the components of the bedsore prevention mat according to the present invention are schematically shown. It is composed of an outer shell (100) having air located inside, a filler (200) located inside the outer shell (100) to reduce pressure due to pressure applied to a patient, and a plurality of valves (300).

[0045] The above components are described in detail as follows.

[0046] The above outer shell (100) is composed of a first outer shell (110) located on one side and formed as a surface on which a user sits, and a second outer shell (120) located on the bottom surface of the mat by combining with the first outer shell (110).

[0047] The first outer shell (110) is formed in a square shape with a plurality of cells (111) formed in various shapes and sizes, a plurality of airflow parts (112) positioned between the vertices of the plurality of cells (111) and between the corners and vertices of the plurality of cells (111), and a plurality of adhesive parts (113) positioned between the corners of a pair of cells (111).

[0048] The above cell (111) is formed in a rectangular parallelepiped shape as an embodiment of the present invention, but is not limited thereto.

[0049] Among the above multiple cells (111), the cell (111) located under the buttocks is formed to be large and long so as to support the patient's buttocks well.

[0050] Additionally, the cell (111) may be formed with rounded corners.

[0051] The above air flow part (112) is connected to the cell (111) and serves to flow air into or out of the cell (111).

[0052] In addition, the air flow portion (112) is formed in a form having three or four moving passage portions (1121) and an internal space protruding outward.

[0053] In addition, the air flow portion (112) may additionally have a protrusion (1123) formed in the center as a space to allow air to flow more.

[0054] The second outer shell (120) is formed in the shape of a flat square plate having a plurality of airflow parts (122) positioned between the vertices of the plurality of cells (111) and between the corners and vertices of the plurality of cells (111), and a plurality of adhesive parts (123) positioned between the corners of a pair of cells (111).

[0055] The above second outer shell (120) is formed in the shape of a flat square plate as an embodiment of the present invention, but is not limited thereto and is formed in a size and shape corresponding to the first outer shell (110).

[0056] The above air flow section (122) is formed in a form that has three or four movement passage sections (1221) and an internal space.

[0057] In addition, the air flow portion (122) may be formed to protrude outward as an embodiment of the present invention, but is not limited thereto and may be formed flat.

[0058] In addition, the air flow portion (122) may additionally have a protrusion (1223) formed in the center as a space to allow air to flow more.

[0059] The above adhesive portion (113) and adhesive portion (123) are the portions where the first outer shell (110) and the second outer shell (120) are adhered, and position the shape of a plurality of cells (111) and the air in the internal space.

[0060] The above outer shell (100) can be folded in the direction of a second outer shell (120) having a flat, square shape through a plurality of adhesive portions (113) and adhesive portions (123), and even when folded, air can pass through the airflow portion (112) of the first outer shell (110) and the airflow portion (122) of the second outer shell (120).

[0061] The above outer shell (100) is formed of one material among TPU (thermoplastic urethane), PV, and rubber, which are flexible and have excellent shock absorption, as an embodiment of the present invention, but is not limited thereto.

[0062] The above filler (200) is located inside the outer shell (100) and not only reduces the pressure applied to the patient, but also returns the mat (10) to its original state when the valve (300) is opened.

[0063] The above filler (200) is composed of a total of five types, including a first filler (210), a second filler (220), a third filler (230), a fourth filler (240), and a fifth filler (250) formed to correspond to the size and shape of the cell (111) of the first outer shell (110).

[0064] In addition, the filler (200) is composed of nine first fillers (210), seven second fillers (220), one third filler (230), two fourth fillers (240), and one fifth filler (250) as an embodiment of the present invention, but is not limited thereto and the number may be adjusted depending on the size of the mat.

[0065] The above first filler (210) is formed in a square shape with the interior completely filled.

[0066] The above second filler (220) is a filler positioned at the part where the patient's leg is located, and is formed in a square shape with a groove (222) formed in the center of one side.

[0067] The above home portion (222) is located on the back of the patient's leg position to weaken the hardness of the second filler (220) and prevent bedsores, etc. in patients who use a wheelchair for a long time.

[0068] The above home portion (222) is formed in a square shape as one embodiment of the present invention, but is not limited thereto.

[0069] The third filler (230) is formed in a square shape having a groove (232) formed in the center of one corner.

[0070] The above home portion (232) is formed in a square shape as one embodiment of the present invention, but is not limited thereto.

[0071] The fourth filler (240) is positioned on both upper sides of the mat in a polygonal shape having a groove (242) formed in the center of one corner.

[0072] The above home portion (242) is a space where the valve (300) is located, and is formed in a square shape as one embodiment of the present invention, but is not limited thereto.

[0073] The fifth filler (250) is formed in a kind of square shape having a pair of first grooves (252) formed in the center and a plurality of second grooves (254) positioned and connected to the edges of the first grooves (252).

[0074] The above first groove (252) and second groove (254) are located on the back of the patient's buttocks to weaken the hardness of the fifth filler (250) and prevent bedsores, etc. in patients who use a wheelchair for a long time.

[0075] The above first home portion (252) is formed in a square shape as one embodiment of the present invention, but is not limited thereto.

[0076] The above second groove (254) serves to move air to the above first groove (252).

[0077] In addition, the second groove (254) is formed as a groove formed lower than the first groove (252) as an embodiment of the present invention, but is not limited thereto.

[0078] In addition, the second groove (254) is formed in five pieces on the edge of the first groove (252) as an embodiment of the present invention, but is not limited thereto and may be formed in nine pieces, which is the number of air flow parts (112) and air flow parts (122) formed around the first groove (252), and may be formed in various ways.

[0079] In addition, the filler (200) may be formed and configured in a shape other than the shape of the first filler (210), the second filler (220), the third filler (230), the fourth filler (240), and the fifth filler (250).

[0080] In addition, the shapes of the first filler (210), the second filler (220), the third filler (230), the fourth filler (240), and the fifth filler (250) may be formed with rounded corners to match the shape of the cells of the first outer shell (110), but are not limited thereto.

[0081] The above filler (200) is formed of urethane foam or memory foam as an embodiment of the present invention, but is not limited thereto and may be formed of a material that is light and can be compressed and returned to its original state.

[0082] The valve (300) is composed of a first body (310) coupled to one side of the first outer shell (110) and positioned in a groove (242), a second body (320) coupled to one side of the first body (310), an opening / closing member (330), an elastic member (340) and a support member (350) positioned inside the second body (320), a third body (360) coupled to one side of the support member (350), a fixing member (370) coupled to the third body (360) and guiding and fixing the rotation of the third body (360), and a pressing member (380) that presses the opening / closing member (330) through the third body (360).

[0083] The first main body (310) has an inner screw portion (312) on a portion of the inner surface that is positioned toward the outside of the mat and has an empty interior.

[0084] The inner screw portion (312) is formed in a shape corresponding to the outer inner screw portion (322) of the second main body (320) and is engaged and combined with the outer inner screw portion (322) of the second main body (320).

[0085] The second main body (320) is formed in a hollow cylindrical shape with an outer inner portion (322) formed on one outer surface, an inner screw portion (324) formed on one inner surface, and a pair of coupling groove portions (326) formed in an 'L' shape on the other outer surface.

[0086] The above outer inner part (322) is coupled with the inner screw part (312) of the first main body (310).

[0087] The above inner screw portion (324) is formed in a shape corresponding to the outer screw portion (352) of the support member (350) described later, and is interlocked and combined with the outer screw portion (352) of the support member (350).

[0088] The above-mentioned joining groove (326) is formed in the shape of an ‘L’ and the joining portion (372) of the fixing member (370) is positioned and joined.

[0089] The above opening / closing member (330) is formed in a circular shape having a protruding cylindrical connecting portion (332) and is located inside the second main body (320).

[0090] The above-mentioned connecting portion (332) is formed to be smaller than the size of the internal space of the elastic member (340) so as to allow smooth movement in the internal space of the elastic member (340), and is formed to be equal to or larger than the size of the opening (354) of the supporting member (350) so as to block the opening (354).

[0091] The above elastic member (340) can be formed as a general spring, which is a known technology and a detailed description thereof will be omitted.

[0092] The above support member (350) is formed in a cylindrical shape having an outer screw portion (352) formed on the outer surface and a through hole (354) formed inside.

[0093] The above outer screw portion (352) is engaged with the inner screw portion (324) of the second main body (320) and is located inside the second main body (320).

[0094] The above-mentioned opening (354) is formed to have the same shape and size so that it can be combined with the connecting portion (332) of the opening / closing member (330), or if the shape is formed differently, the size of the opening (354) is formed to be smaller than the connecting portion (332) of the opening / closing member (330) so that the connecting portion (332) can block the opening (354).

[0095] The third body (360) is formed in a cylindrical shape with one side closed and an interior that is hollow, and a pair of coupling holes (361) are formed facing each other.

[0096] The above-mentioned joining hole (361) is positioned so that the fixing member (370) is joined.

[0097] The connection between the third main body (360) and the fixed member (370) can be achieved by various connection methods such as screw connection and adhesive connection, but is not limited thereto.

[0098] The above-mentioned fixed member (370) is formed in a disc shape having a cylindrical joint portion (372) with one side protruding.

[0099] The above-mentioned coupling part (372) is positioned in the coupling groove part (326) of the second main body (320) and is formed so as to be able to move along the coupling groove part (326) through rotation of the coupled third main body (360).

[0100] The above pressing member (380) is located inside the third main body (360) and serves to press the opening / closing member (330).

[0101] The connection between the above pressing member (380) and the third body (360) can be achieved through various connection methods such as fitting connection and connection using an adhesive, but is not limited thereto.

[0102]

[0103] The bedsore prevention mat of the present invention configured as described above operates in the following manner.

[0104] First, when the patient sits down and the third body (360) of the valve (300) is rotated in one direction, the joint part (372) of the fixed member (370) coupled to the third body (360) rotates along the joint groove part (326) of the second body (320) and then moves in the vertical direction of the joint groove part (326) due to the elasticity of the internal elastic member (340), and the air inside the cell (111) of the mat is released.

[0105] Afterwards, the shape of the cell (111) into which the filler (200) is inserted is changed to suit the body structure, and when the air is properly released and the shape change is completed to suit the body structure of the patient, the third main body (360) is pressed to stop the air from escaping.

[0106] Thereafter, when the user rotates the third main body (360) in one direction while pressing it, the coupling portion (372) of the combined fixing member (370) moves vertically along the coupling groove portion (326) of the second main body (320) and then moves to the side in one direction to be positioned, and the third main body (360) is fixed in the pressed state.

[0107] At this time, the pressing member (380) presses the opening / closing member (330) by pressing the third main body (360), and the opening / closing member (330) presses the elastic member (340) and simultaneously blocks the hole (354) of the support member (350) to prevent air from escaping, and as the third main body (360) is fixed in the pressing state, the air inside the mat is maintained.

[0108] Afterwards, when the patient's use of the mat is finished, the third body (360) of the valve (300) is opened by rotating in one direction, and the air is moved to enter or exit the inside, and the filler (200) that was deformed by the patient's pressing is returned to its original shape.

[0109] In addition, the present invention can inject and discharge air using only a valve without having a separate air inlet and air injection device, so that a patient can conveniently use it alone and it is economical.

[0110] In addition, the present invention has the effect of preventing bedsores, etc. in patients by reducing the pressure applied to the patient's body.

[0111] In addition, the present invention can be used in various ways, such as in a bedsore prevention mat, as well as in car seats, baby stroller seats, cushions, etc., and thus has an efficient effect.

[0112] In addition, the present invention has the effect of making it easier to transport and store by making it lighter than a general mat and minimizing its volume when contracted, thereby enabling convenient use by the user.

[0113] In addition, the present invention has the effect of making it easy to remove air even in a folded state because it has a protruding air flow portion and a movement passage portion, unlike conventional air mattresses that take time to deflate due to poor air flow when folded.

[0114] In addition, the present invention has the effect of distributing the pressure in the contact area of ​​the ischial femur, which is the part that receives the most pressure when a user sits on the mat, by forming the filler having a hollow groove portion in the filler to be softer than the filler not having the hollow groove portion, thereby reducing the contact pressure and relatively transferring the pressure to the filler not having the hollow groove portion, thereby evenly distributing the applied pressure.

[0115] In the above, the configuration and operation of the bedsore prevention mat according to the present invention have been described in detail and illustrated with drawings, but this is merely an example, and various changes and modifications are possible within the scope that does not depart from the technical spirit of the present invention.

Claims

1. An outer shell (100) having an internal space; and, A filler (200) located inside the above outer shell (100); It consists of a plurality of valves (300); The above valve (300) comprises a first body (310) having an inner hollow shape having an inner screw portion (312) on an inner surface of one side, an outer inner screw portion (322) formed on an outer surface of one side, an inner screw portion (324) formed on an inner surface of one side, and a pair of coupling grooves (326) formed in an 'L' shape on an outer surface of the other side, a second body (320) having an inner hollow shape and coupled to one side of the first body (310), an opening / closing member (330) located inside the second body (320) in a disc shape having a protruding cylindrical coupling portion (332), an elastic member (340) located between the opening / closing member (330) and a support member (350), and a cylindrical shape having an outer screw portion (352) formed on an outer surface and a through hole (354) formed inside. It is composed of a supporting member (350) to be joined, a third body (360) that is joined to the supporting member (350) in the form of a cylinder with one side closed and an interior that is hollow, a fixing member (370) that is joined to the third body (360) in the form of a plate having a cylindrical joint portion (372) with one side protruding, and a pressing member (380) that is located inside the third body (360) and presses the opening / closing member (330). A bedsore prevention mat characterized in that it can prevent bedsores in a patient by reducing the pressure caused by the pressure applied to the patient through the air located inside the outer shell (100) and the filler (200).

2. In the first paragraph, the outer shell (100) is composed of a first outer shell (110) located on one side and formed as a surface on which a user sits, and a second outer shell (120) located on the bottom surface of the mat by combining with the first outer shell (110), and is characterized in that it is formed of any one material among TPU (thermoplastic urethane), PV, and rubber.

3. In the second paragraph, the first outer shell (110) has a plurality of cells (111) formed in various shapes and sizes, a plurality of airflow parts (112) located between the vertices of the plurality of cells (111) and between the corners and vertices of the plurality of cells (111), and a plurality of adhesive parts (113) located between the corners of the plurality of cells (111). A bedsore prevention mat, characterized in that the second outer shell (120) has a plurality of airflow parts (122) located between the vertices of a plurality of cells (111) and between the corners and vertices of a plurality of cells (111), and a plurality of adhesive parts (123) located between the corners of a plurality of cells (111).

4. In the third paragraph, the air flow portion (112) is formed in a form that has three or four moving passage portions (1121) and a protrusion (1123) formed in the center as a space for further air flow, and protrudes outward to have an internal space. The above air flow part (122) is characterized in that it is formed with an internal space and has three or four moving passage parts (1221) and a protrusion (1223) formed in the center as a space for further air flow.

5. In the first paragraph, the filler (200) is characterized in that it is composed of a first filler (210) that is filled entirely inside and formed to correspond to the size and shape of the cell (111) of the first outer shell (110), a second filler (220) that has a groove (222) formed in the center of one side, a third filler (230) that has a groove (232) formed in the center of one edge, a fourth filler (240) that has a groove (242) formed in the center of one edge, and a fifth filler (250) that has a pair of first grooves (252) formed in the center and a plurality of second grooves (254) positioned connected to the edges of the first grooves (252).

6. In the first paragraph, the bonding portion (332) is formed to be smaller than the size of the internal space of the elastic member (340) so as to be able to move smoothly in the internal space of the elastic member (340), and is formed to be equal to or larger than the size of the hole (354) of the support member (350) so as to be able to block the hole (354), a bedsore prevention mat.

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