JP2012157652A - Adhesive plaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive plaster capable of easily giving a vacuum-assisted closure therapy (VAC therapy).SOLUTION: The adhesive plaster 1 includes an air impermeable outer sheet 2 having a sticking section 3 on a lower surface, an elastic body 4 disposed under the outer sheet 2 in a compressed state, and a hydrolysis covering sheet 5 disposed under the elastic body 4, and maintaining the elastic body 4 in the compressed state.

Description

  The present invention relates to a bandage used for the treatment of wounds and pressure ulcers.

  Conventionally, continuous negative pressure aspiration therapy (VAC therapy) is known as a treatment method for promoting healing of wounds and pressure ulcers. According to VAC therapy, maintaining the affected area where a wound, pressure ulcer, etc. are kept in a reduced pressure (negative pressure) state can promote granulation or blood circulation, and accelerate healing of wounds, pressure ulcers, etc. It is considered. Various treatment devices using VAC therapy have been proposed. For example, Patent Document 1 discloses a non-breathable cover having a cavity provided with an opening, a peripheral portion surrounding the opening, and a patient's skin. A wound treatment device is disclosed having means for sealing the perimeter to and a means for absorbing or removing oxygen from within the cavity of the covering.

Special table 2007-509039

  However, the VAC therapy has a problem that a large-scale device is required to keep the affected part in a reduced pressure (negative pressure) state, and as a result, a patient who has been subjected to the VAC therapy has limited free behavior. The treatment tool disclosed in Patent Document 1 also uses a special absorbent or device for absorbing or removing oxygen, and requires care in handling or complicated handling.

  This invention is made | formed in view of the said situation, The objective is to provide the adhesive bandage which can give a continuous negative pressure suction therapy (VAC therapy) simply.

  The adhesive bandage of the present invention that has been able to solve the above problems includes a non-breathable exterior sheet having an adhesive portion on the lower surface, an elastic body disposed in a compressed state on the lower side of the exterior sheet, and an elastic body It has a feature in that it has a water-decomposable covering sheet that is disposed on the lower side and holds the elastic body in a compressed state. When the adhesive bandage of the present invention is applied to an affected part where a wound, pressure ulcer, etc. has been applied, if the body fluid such as blood or lymph that has exuded from the wound or pressure ulcer touches the water-degradable covering sheet, the covering sheet is torn and elastic body The compressed state of is released. When the compressed state is released, the elastic body increases the volume between the skin with the adhesive bandage and the exterior sheet, and as a result, the space between the skin and the exterior sheet (the space in which the elastic body is arranged) is increased. Depressurized. And the healing of wounds, pressure ulcers, etc. is accelerated | stimulated by hold | maintaining the affected part which a wound, pressure ulcers, etc. were carried out in the pressure reduction (negative pressure) state. Therefore, if the adhesive bandage of the present invention is used, the same effect as that of continuous negative pressure aspiration therapy (VAC therapy) can be obtained.

  The covering sheet is preferably bonded to the adhesive portion to hold the elastic body in a compressed state. It is also preferred that the covering sheet extends above the elastic body and encloses the elastic body in a compressed state. In either case, the elastic body is suitably held in a compressed state by the covering sheet.

  The covering sheet is preferably composed of at least one selected from the group consisting of tissue paper, thin paper, vinyl acetate film, polyvinyl alcohol film, wafer film, and gelatin film. If the covering sheet is made of such a material, it easily breaks when the covering sheet touches body fluid.

  The elastic body is preferably composed of a foamed polymer or a fiber mass. If the elastic body is composed of a foamed polymer or a fiber lump, the elastic body can be easily compressed, and when the elastic body is released from the compressed state, the elastic body absorbs bodily fluids such as blood and lymph fluid to absorb wounds and It is expected to promote the healing of pressure ulcers.

  The covering sheet may be formed by connecting a plurality of sheets with a water-soluble adhesive. If the covering sheet is formed in this way, when the joint portion where the plurality of sheets are joined by the water-soluble adhesive is wetted with water, the joint of the joint portion is easily released. The water-soluble adhesive contains at least one selected from the group consisting of starch paste, styrene-isoprene-styrene block copolymer (SIS), and styrene-ethylene-butadiene-styrene block copolymer (SEBS). Is preferred.

  The elastic body is preferably disposed so as to be surrounded by the adhesive portion and separated from the adhesive portion. If the elastic body is arranged away from the adhesive portion, when the compressed state of the elastic body is released, the elastic body swells in a blank area between the elastic body and the adhesive portion, and the space where the elastic body is arranged The space can be easily expanded, and the space can be easily decompressed.

  The adhesive bandage of the present invention can easily hold the affected area in a reduced pressure (negative pressure) state by being attached to the affected area where a wound, pressure ulcer, or the like has been made. Therefore, if the adhesive bandage of the present invention is used, continuous negative pressure suction therapy (VAC therapy) can be easily performed.

Fig.1 (a) represents the top view of the adhesive bandage concerning a 1st embodiment, and FIG.1 (b) represents AA sectional drawing of Fig.1 (a). Fig.2 (a) represents the top view of the adhesive bandage concerning a 2nd embodiment, and FIG.2 (b) represents BB sectional drawing of Fig.2 (a). Fig.3 (a) represents the top view of the adhesive bandage concerning 3rd embodiment, FIG.3 (b) represents CC sectional drawing of Fig.3 (a).

  The adhesive bandage of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments shown in the drawings.

  FIG. 1 shows a first embodiment of the bandage of the present invention. Fig.1 (a) represents the top view of the adhesive bandage concerning a 1st embodiment, and FIG.1 (b) represents AA sectional drawing of Fig.1 (a). In addition, Fig.1 (a) represents the lower surface of the adhesive bandage, FIG.1 (b) represents the upper side of the adhesive bandage, and the lower side of the figure represents the lower side of the adhesive bandage.

  The bandage 1 of the present invention includes a non-breathable exterior sheet 2 having an adhesive portion 3 on the lower side, an elastic body 4 disposed in a compressed state below the exterior sheet 2, and disposed below the elastic body 4. And a water-decomposable covering sheet 5 that holds the elastic body 4 in a compressed state. The adhesive bandage 1 is used so that the lower side faces an affected area such as a wound or a pressure ulcer, and the adhesive bandage 1 is attached to the affected area and the surrounding skin by the adhesive part 3.

  The size and outer shape of the adhesive bandage 1 are not particularly limited. The size of the adhesive bandage 1 is appropriately set according to the size of the affected area. Examples of the external shape of the adhesive bandage 1 include a quadrangle, a quadrangle with rounded corners, a circle, and an ellipse.

  The exterior sheet 2 preferably forms the outer edge of the adhesive bandage 1. The exterior sheet 2 is configured to be positioned farther from the skin surface of the affected part than the elastic body 4 and the covering sheet 5 and cover the elastic body 4 and the covering sheet 5 when the adhesive plaster 1 is attached to the affected part.

  The exterior sheet 2 is non-breathable. Therefore, the exterior sheet 2 is not formed with a hole as seen in a normal bandage. The material of the exterior sheet 2 is not particularly limited as long as it is impermeable. As a material of the exterior sheet 2, a film material generally used as a gas barrier film may be used, and examples thereof include a polyethylene film such as a PET film, a polyamide film such as a nylon film, a film on which silica, aluminum, or the like is deposited. Moreover, you may use the non-breathable polyurethane film as disclosed by Unexamined-Japanese-Patent No. 2001-98047.

  An adhesive portion 3 is provided on the lower surface of the exterior sheet 2. The adhesive bandage 1 is affixed to the affected part and the surrounding skin by the adhesive part 3. In FIG. 1A, the portion of the exterior sheet 2 where the adhesive portion 3 is provided is indicated by cross hatching. In the figure, even when the adhesive portion 3 is hidden by another member (for example, the covering sheet 5), the adhesive portion 3 is indicated by solid cross hatching.

  The adhesive part 3 is formed by, for example, applying an adhesive to the exterior sheet 2. As the pressure-sensitive adhesive, for example, a rubber-based pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, a polyvinyl ether-based pressure-sensitive adhesive, or the like can be used. Examples of rubber-based adhesives include natural rubber, polyisoprene, styrene-butadiene copolymer (SBR), styrene-isoprene-styrene block copolymer (SIS), and styrene-butadiene-styrene block copolymer (SBS). Styrene-ethylene-butadiene-styrene block copolymer (SEBS), styrene-ethylene-propylene-styrene block copolymer (SEPS), and the like. The above-mentioned pressure-sensitive adhesive may be used alone or in combination of two or more.

  The pressure-sensitive adhesive may contain a tackifier, an antioxidant, a plasticizer, a softener, a viscosity modifier, and the like. Conventionally known tackifiers may be used. For example, dicyclopentadiene resin, C5 or C9 hydrocarbon resin, alicyclic hydrocarbon resin, rosin, terpene, etc. may be used. it can.

  The adhesion part 3 may be provided in the whole lower surface of the exterior sheet 2, and may be provided only in one part. In addition, the adhesion part 3 is provided so that the circumference | surroundings of the elastic body 4 provided in the lower side of the exterior sheet 2 may be enclosed. In FIGS. 1A and 1B, the adhesive portion 3 is provided only around the elastic body 4 and is not provided in a portion overlapping the elastic body 4, but the adhesive portion 3 is disposed around the elastic body 4. As long as it is provided so as to surround, it may be provided so as to overlap the elastic body 4.

  It is preferable that an adhesive part is not provided on the upper side surface of the exterior sheet 2. For example, no member is provided on the upper side of the exterior sheet 2, and the exterior sheet 2 forms the outermost layer of the adhesive plaster 1.

  The elastic body 4 is disposed in a compressed state below the exterior sheet 2, and a water-decomposable covering sheet 5 that holds the elastic body 4 in a compressed state is provided below the elastic body 4. Since the adhesive bandage 1 has the elastic body 4 and the covering sheet 5 thus provided, when the adhesive bandage 1 is affixed to an affected area where a wound, pressure ulcer, or the like has been applied, blood or lymph fluid that has exuded from the wound or pressure ulcer. When the body fluid such as the water touches the water-decomposable covering sheet 5, the covering sheet 5 is broken and the compressed state of the elastic body 4 is released. When the compressed state is released, the elastic body 4 increases the volume between the skin on which the adhesive bandage 1 is applied and the exterior sheet 2, and as a result, the space between the skin and the exterior sheet 2 (the elastic body 4 is arranged). ) Is depressurized. That is, the affected part where a wound, a pressure ulcer, etc. were made will be hold | maintained in a pressure reduction (negative pressure) state. It is considered that the affected area where a wound, pressure ulcer, etc. has been maintained is kept in a reduced pressure (negative pressure) state, thereby promoting granulation and blood circulation, and as a result, healing of the wound, pressure ulcer, etc. is promoted. .

  It is preferable that the exterior sheet 2 has elasticity. If the exterior sheet 2 has stretchability, when the compressed state of the elastic body 4 is released, the exterior sheet 2 expands and the volume of the space in which the elastic body 4 is arranged is likely to increase. As such an exterior sheet 2, a polyamide film, a polyurethane film or the like may be used.

  The elastic body 4 is disposed on the lower side of the exterior sheet 2 so as to be surrounded by the adhesive portion 3. If the elastic body 4 is arranged in this way, the space in which the elastic body 4 is arranged is present in a closed state between the exterior sheet 2 and the skin, and the volume of the space in which the elastic body 4 is arranged. As the pressure increases, the pressure in the space decreases. The elastic body 4 may be disposed so as to overlap the adhesive portion 3.

  As shown in FIGS. 1A and 1B, the elastic body 4 is preferably surrounded by the adhesive portion 3 and spaced from the adhesive portion 3. That is, it is preferable that the outer sheet 2 is provided with a blank area 6 where the adhesive portion is not provided outward from the outer edge of the elastic body 4, and the adhesive portion 3 is provided outside the blank area 6. If the elastic body 4 is arranged away from the adhesive portion 3, the elastic body 4 swells in the blank area 6 between the elastic body 4 and the adhesive portion 3 when the compressed state of the elastic body 4 is released, and is elastic. The space in which the body 4 is arranged can be easily expanded, and the space can be easily decompressed.

  The elastic body 4 is not particularly limited as long as it is a compressible material. Examples of the elastic body include foamed polymers such as foamed urethane, foamed rubber, and foamed polyester; fiber clusters that are aggregates of fibers such as cotton, sponge, pulp fiber, and synthetic fiber. If the elastic body is a foamed polymer or fiber mass, the elastic body can be easily compressed, and when the elastic body is released from the compressed state, it absorbs body fluids such as blood and lymph to promote healing of wounds and pressure ulcers. Is expected to do. As the elastic body 4, it is particularly preferable to use a foamed polymer in terms of excellent elastic recovery.

  The covering sheet 5 is provided on at least the lower side of the elastic body 4 so as to hold the compressed state of the elastic body 4. For example, as shown in FIGS. 1A and 1B, the covering sheet 5 is preferably bonded to the adhesive portion 3 to hold the elastic body 4 in a compressed state. 1 (a) and 1 (b), the covering sheet 5 covers the entire lower surface of the elastic body 4 in a state where the elastic body 4 is compressed, and the periphery of the covering sheet 5 is joined to the adhesive portion 3, As a result, the elastic body 4 is sandwiched between the covering sheet 5 and the exterior sheet 2, and the compressed state of the elastic body 4 is maintained. Although not shown in the figure, the covering sheet 5 covers only a part of the elastic body 4 and, for example, the both ends of the covering sheet 4 are joined to the adhesive portion 3 so that the compressed state of the elastic body 4 is maintained. May be.

  The covering sheet 5 is arranged on the lower side of the elastic body 4 and extends to the upper side of the elastic body 4, and the elastic body 4 is included in a compressed state by the covering sheet 5 arranged in this way, The compressed state of the elastic body 4 may be maintained. Further, another sheet is arranged on the upper side of the elastic body 4 (that is, between the elastic body 4 and the exterior sheet 2), the peripheral edges of the sheet and the covering sheet 5 are joined, and the elastic body 4 is included in a compressed state. Thereby, the compression state of the elastic body 4 may be maintained.

  The covering sheet 5 is water-decomposable. The water disintegrating property of the covering sheet 5 means that the covering sheet 5 is dispersed or dissolved when the covering sheet 5 comes into contact with a body fluid that has exuded from a wound or a pressure ulcer, or the joining of the covering sheets 5 is released and is broken. means. Therefore, if the covering sheet 5 is water-decomposable, part or all of the compression of the elastic body 4 held in a compressed state by the covering sheet 5 is released when the covering sheet 5 comes into contact with body fluid. .

  The covering sheet 5 is preferably composed of at least one selected from the group consisting of tissue paper, thin paper, vinyl acetate film, polyvinyl alcohol film, wafer film, and gelatin film. The tissue paper or thin paper may be composed of natural fibers such as wood pulp fibers and non-wood plant fibers, and synthetic fibers such as rayon fibers and polyester fibers. If the covering sheet 5 is made of such a material, the covering sheet 5 itself becomes water-decomposable and easily breaks when the covering sheet 5 touches body fluid.

  The covering sheet 5 may be formed by connecting a plurality of sheets with a water-soluble adhesive. If the covering sheet 5 is formed in this way, when the joint portion where the plurality of sheets are joined by the water-soluble adhesive is wetted with water, the joint of the joint portion is easily released. The water-soluble adhesive is not particularly limited as long as the adhesive effect is reduced when wetted with water. Starch glue, styrene-isoprene-styrene block copolymer (SIS), and styrene-ethylene-butadiene-styrene block It is preferable that it contains at least one selected from the group consisting of copolymers (SEBS). The water-soluble adhesive containing SIS and SEBS may be a hot melt adhesive.

  When the covering sheet 5 is connected with a water-soluble adhesive, the covering sheet 5 itself may not be made of a water-decomposable material. The covering sheet 5 may be composed of, for example, a nonwoven fabric, a woven fabric, a knitted fabric, or the like. Conversely, when the covering sheet 5 itself is made of a water-decomposable material, the covering sheet 5 may not be joined by a water-soluble adhesive. Of course, the covering sheet 5 itself may be made of a water-decomposable material, and a plurality of such water-decomposable sheets may be joined together to form the covering sheet 5.

  Next, another embodiment of the bandage of the present invention will be described. Fig.2 (a) represents the top view of the adhesive bandage concerning a 2nd embodiment, and FIG.2 (b) represents BB sectional drawing of Fig.2 (a). In addition, Fig.2 (a) represents the lower surface of the adhesive bandage, FIG.2 (b) represents the upper side of the adhesive bandage, and the lower side of the figure represents the lower side of the adhesive bandage. In the following description, the description of the same part as the first embodiment shown in FIGS. 1A and 1B is omitted.

  In the adhesive bandage 1 shown in FIGS. 2A and 2B, the covering sheet 5 extends above the elastic body 4 and encloses the elastic body 4 in a compressed state. The elastic body 4 may be held in a compressed state by being encapsulated in the covering sheet 5, and in this case, the same effect as that of the bandage according to the first embodiment is obtained.

  2A and 2B, the covering sheet 5 including the elastic body 4 is joined to the exterior sheet 2 by an adhesive portion 3b provided so as to overlap the elastic body 4. The exterior sheet 2 is provided with an adhesive portion 3a so as to surround the elastic body 4 separately from the adhesive portion 3b. Although not shown in the figure, the adhesive portion 3a and the adhesive portion 3b may be integrated, and the adhesive portion may be provided on the entire lower surface of the exterior sheet 2.

  2A and 2B, the covering sheets 5 are joined to each other on the upper side of the elastic body 4, but the position of the joining portion where the covering sheets 5 are joined is limited to the upper side of the elastic body 4. Instead, it may be located on the lower side of the elastic body 4 or on the side. A joining means for joining the covering sheets 5 is not particularly limited, and the above-described water-soluble adhesive may be used, or a known adhesive means such as a general adhesive may be used. Further, the covering sheets 5 may be joined to each other by the bonding portion 3b, and the elastic body 4 may be held in a compressed state.

  3A and 3B show still another embodiment of the adhesive bandage of the present invention. Fig.3 (a) represents the top view of the adhesive bandage concerning 3rd embodiment, FIG.3 (b) represents CC sectional drawing of Fig.3 (a). In addition, Fig.3 (a) represents the lower surface of the adhesive bandage, FIG.3 (b) represents the upper side of the adhesive bandage, and the lower side of the figure represents the lower side of the adhesive bandage. In the following description, the description of the same part as the first embodiment shown in FIGS. 1A and 1B is omitted.

  The bandage 1 shown in FIGS. 3A and 3B has a covering sheet 5 disposed below the elastic body 4 and an intermediate sheet 7 disposed above the elastic body 4. Thus, the covering sheet 5 and the intermediate sheet 7 are joined, and the elastic body 4 is held in a compressed state. In such a case, the same effect as the adhesive bandage according to the first embodiment can be obtained.

  As long as the elastic body 4 is held in a compressed state, the covering sheet 5 and the intermediate sheet 7 may be bonded together around the elastic body 4 or may be intermittently bonded around the elastic body 4. . The intermediate sheet 7 may be composed of at least one selected from the group consisting of tissue paper, thin paper, vinyl acetate film, polyvinyl alcohol film, wafer film, and gelatin film that can be used for the covering sheet 5. You may comprise from well-known sheet members, such as cloth, a knitted fabric, and a plastic film.

  In FIGS. 3A and 3B, the adhesive portion 3 is provided on the entire lower surface of the exterior sheet 2, but the adhesive portion 3 may be partially provided on the lower surface of the exterior sheet 2. For example, the adhesive section 3 may be provided so that a part thereof surrounds the cover sheet 5 and the intermediate sheet 7 and the other part is provided in a portion overlapping the intermediate sheet 7.

  In the adhesive bandage 1 according to the third embodiment, it is preferable that the intermediate sheet 7 extends outward from the outer edge of the elastic body 4. In this case, a blank area where no adhesive portion is provided is formed between the outer edge of the elastic body 4 and the outer edge of the intermediate sheet 7. Therefore, when the compressed state of the elastic body 4 is released, the elastic body 4 swells in the region where the intermediate sheet 7 is disposed, and the space where the elastic body 4 is disposed can be easily expanded. As a result, the space in which the elastic body 4 is arranged can be easily decompressed.

  The bandage 1 may be provided with other members than those described above. For example, the adhesive bandage 1 may be provided with a release sheet that covers the cover sheet 5 and the adhesive portion 3 below the cover sheet 5. If the release sheet is provided in this way, the release sheet protects the covering sheet 5 and the adhesive part 3 before using the adhesive bandage 1, and when the adhesive bandage 1 is used, the release sheet is peeled off to remove the adhesive bandage 1 from a wound, pressure ulcer, etc. Can be used by sticking to the affected area.

1: Adhesive bandage 2: Exterior sheet 3: Adhesive part 4: Elastic body 5: Cover sheet 6: Blank area 7: Intermediate sheet

Claims (8)

A non-breathable exterior sheet having an adhesive portion on the lower surface;
An elastic body disposed in a compressed state on the lower side of the exterior sheet;
A bandage comprising a water-decomposable covering sheet disposed under the elastic body and holding the elastic body in a compressed state.   The bandage according to claim 1, wherein the covering sheet is bonded to the adhesive portion to hold the elastic body in a compressed state.   The bandage according to claim 1 or 2, wherein the covering sheet extends above the elastic body and encloses the elastic body in a compressed state.   The said covering sheet is comprised from at least 1 sort (s) chosen from the group which consists of tissue paper, thin paper, a vinyl acetate film, a polyvinyl alcohol film, an oblate film, and a gelatin film. Plasters.   The adhesive bandage according to any one of claims 1 to 4, wherein the elastic body is composed of a foamed polymer or a fiber lump.   The bandage according to any one of claims 1 to 5, wherein the covering sheet is formed by joining a plurality of sheets with a water-soluble adhesive.   The water-soluble adhesive includes at least one selected from the group consisting of starch paste, styrene-isoprene-styrene block copolymer (SIS), and styrene-ethylene-butadiene-styrene block copolymer (SEBS). Item 5. A bandage according to item 6.   The bandage according to any one of claims 1 to 7, wherein the elastic body is surrounded by the pressure-sensitive adhesive portion and is arranged away from the pressure-sensitive adhesive portion.

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