JP2010148916A - Pad for lesion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pad for lesion which is hard to stick to a lesion, is excellent in the sucking permeability of an exudate from the lesion, and also is excellent in the absorbency of the exudate which has been sucked and permeated. <P>SOLUTION: This pad includes a liquid-permeable fiber cotton layer 1 which is brought into contact with a lesion, and is used to suck up and make permeate the exudate from the lesion, and a liquid-absorbent fiber cotton layer which is laminated on the liquid-permeable fiber cotton layer 1, and is used for absorbing the exudate. In the pad, the liquid-permeable fiber cotton layer 1 includes a mixture of a releasable fiber cotton, a germ-resistant fiber cotton and a heat-fusible fiber cotton. The mixture is partially fused by the heat-fusible fiber cotton. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a wound pad, and more particularly, to a wound pad that is difficult to adhere to a wound part and has excellent absorbency of exudate from the wound part and excellent absorbability of exudate that has been absorbed through the wound part. .

  Conventionally, a wide variety of wound pads have been proposed for healing wounds by contacting the wounds of skin and subcutaneous tissue with exudate derived from surgery, wounds, skin ulcers, pressure ulcers, etc. Yes.

  For example, in order to prevent the absorbent material from getting wet with water and causing inflow of bacteria, breeding, etc., the absorbent layer made of woven or knitted fabric such as gauze, absorbent cotton, non-woven fabric, wool, polyester etc. A bandage treated with an agent has been proposed (see, for example, Patent Document 1).

  Further, in order to satisfy the elimination of scab adhesion and the absorbability of exudate from the wound, a bandage in which at least 80% of the surface of the wound pad is covered with a regenerated cellulose fiber fabric has been proposed (for example, Patent Document 2).

  Furthermore, in order to improve the removability of exudate from the wound part, a pad comprising a liquid-permeable fiber cotton layer applied to the wound part and a liquid-absorbing fiber cotton layer polymerized on the liquid-permeable fiber cotton layer Has been proposed (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 61-253058 JP-A-7-51314 JP 2002-78730 A

  However, as in the former two cases, the pad made of gauze, absorbent cotton or regenerated cellulose fiber fabric has excellent liquid absorbency, so although it absorbs exudate from the wound well initially, Gradually solidifies and reduces the exudate absorbability of pads such as gauze, which results in containment of exudate from the wound area, preventing the leakage of dirty exudate, and on the other hand becoming a breeding ground for miscellaneous bacteria propagation, wound healing May be delayed.

  Furthermore, since the pad solidified with the exudate adheres to the wound part, for example, when the contaminated pad is replaced with a new pad, the contaminated pad is forcibly removed from the wound part and healed with great effort. It can also make the wound worse again. Moreover, since the solidified pad is poor in elasticity and flexibility, it stimulates the wound part, which also causes the healing to be delayed.

  On the other hand, the pad made of the latter liquid-permeable fiber cotton layer and the liquid-absorbent fiber cotton layer allows the liquid-permeable fiber cotton layer to permeate most of the exudate from the wound portion. Since the exudate hardly solidifies in the fiber cotton layer, the pad rarely adheres to the wound part.Therefore, when the pad is replaced, the pad part is forcibly removed from the wound part. Although it is considerably improved as compared with the former two, the liquid permeation performance is not always sufficient, so it is inevitable that the pad may adhere.

  In view of such circumstances, the present invention improves the liquid uptake and permeability of the liquid-permeable fiber cotton layer, promotes leakage of exudate from the wound part, and prevents the pad from adhering to the wound part. Therefore, the pad can be easily replaced. An object of the present invention is to provide a pad that does not worsen a wound part that has been healed.

  As a result of intensive studies to solve the above-mentioned problems, the liquid-permeable fiber cotton layer is composed of a mixture of peelable fiber cotton, antibacterial fiber cotton, and heat-sealable fiber cotton, and the mixture is partially In particular, it has been found that the intended purpose is achieved by fusing with heat-fusible fiber cotton, and the present invention has been achieved.

  That is, the invention according to claim 1 of the present invention is laminated on the liquid-permeable fiber cotton layer, which is in contact with the wound part and sucks and permeates the exudate from the wound part, and the liquid-permeable fiber cotton layer. In the pad comprising the liquid absorbent fiber cotton layer for absorbing the exudate, the liquid permeable fiber cotton layer is made of a peelable fiber cotton, an antibacterial fiber cotton, and a heat fusible fiber cotton. The wound pad is made of a mixture, and the mixture is partially fused with heat-fusible fiber cotton.

  The invention according to claim 2 of the present invention is such that the peelable fiber cotton is polyester fiber, polyamide fiber, polyurethane fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyacrylonitrile fiber, polyvinyl alcohol. It consists of at least 1 sort (s) chosen from system fiber.

  In the invention according to claim 3 of the present invention, the antibacterial fiber cotton is made of polyester fiber, polyamide fiber, polyurethane fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyacrylonitrile fiber, polyvinyl It consists of at least 1 sort (s) chosen from alcohol fiber.

  In the invention according to claim 4 of the present invention, the heat-fusible fiber cotton is made of polyester fiber, polyamide fiber, polyurethane fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyacrylonitrile fiber, It consists of at least 1 sort (s) chosen from polyvinyl alcohol fiber, polyethylene fiber, and polypropylene fiber.

  The invention according to claim 5 of the present invention is characterized in that the heat-fusible fiber cotton has a core-sheath structure.

  The invention according to claim 6 of the present invention is that the peelable fiber cotton is made of polyester fiber subjected to silicone processing, the antibacterial fiber cotton is made of polyester fiber subjected to antibacterial treatment, and the heat-fusible fiber cotton. The wound pad according to claim 1, which comprises a core-sheath structure having polyester fiber as a core and polyethylene as a sheath.

  The invention according to claim 7 of the present invention is that the peelable fiber cotton is 30 to 50% by weight, the antimicrobial fiber cotton is 40 to 60% by weight, and the heat-fusible fiber cotton is 5 to 15% by weight. Features.

  The invention according to claim 8 of the present invention is characterized in that the liquid absorbent fiber cotton layer is composed of at least one selected from gauze, natural cotton, and cellulose fiber cotton.

  In the pad of the present invention, the liquid-permeable fiber cotton layer that is in contact with the wound part and sucks and permeates the exudate from the wound part is made of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber. Since the mixture is made of a mixture with cotton, and the mixture is partly fused and networked with heat-fusible fiber cotton, a large number of fine spaces formed by the fused portions of heat-fusible fiber cotton However, the wrinkle functions in the same way as the capillary tube, and effectively absorbs and permeates the exudate from the wound by capillary action and leads to the liquid absorbent fiber cotton layer laminated on the liquid permeable fiber cotton layer. Absorb to fiber cotton layer.

  Thus, since the exudate permeates the liquid permeable fiber cotton layer and is hardly absorbed and retained in the layer, the exudate does not solidify the liquid permeable fiber cotton layer with the exudate. This prevents the trouble that the wound part, which has adhered to the wound part, is forcibly removed when the pad is replaced, and the wound part which has been healed is deteriorated again.

  Moreover, since the exudate only permeates the liquid-permeable fiber cotton layer and is hardly absorbed and retained, it is difficult to become a hotbed for propagation of various bacteria.

  Moreover, since the peelable fiber cotton which does not easily adhere to the wound part is mixed with the liquid-permeable fiber cotton layer, the adhesion of the pad to the wound part is further reduced.

  Furthermore, since antimicrobial fiber cotton is mixed in the liquid-permeable fiber cotton layer, the propagation of various bacteria is prevented, and healing of the wound part is promoted.

  Furthermore, the liquid-permeable fiber cotton layer is a network in which a mixture of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton is partially fused by the heat-fusible fiber cotton. Therefore, the wound portion is rich and elastic and flexible, and the unity property is very good, and handling with tweezers is easy.

FIG. 1 is a schematic cross-sectional view showing a wound part pad of Example 1. FIG. FIG. 2 is a schematic cross-sectional view showing a wound part pad of Example 2. FIG. FIG. 3 is a schematic cross-sectional view showing the wound pad of Comparative Example 1.

  The present invention relates to a liquid-permeable fiber cotton layer for abutting against a wound part and sucking and permeating exudate from the wound part, and laminated on the liquid-permeable fiber cotton layer for absorbing the exudate. In the pad comprising the liquid absorbent fiber cotton layer, the liquid permeable fiber cotton layer is composed of a mixture of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton, and the mixture is partially It is characterized by being fused with the heat-fusible fiber cotton.

  The liquid-permeable fiber cotton layer used in the present invention is for abutting against the wound part and substantially absorbing the exudate from the wound part, and sucking and permeating it. Accordingly, the liquid-permeable fiber cotton layer is preferably composed of fibers that do not adversely affect the wound part and hardly absorb the liquid, such as polyester fibers, polyamide fibers, polyurethane fibers, polyolefin fibers, and polystyrene fibers. Examples thereof include fibers, polyvinyl chloride fibers, polyacrylonitrile fibers, and polyvinyl alcohol fibers. These may be used alone or in combination of two or more as required.

  The liquid-permeable fiber cotton layer of the present invention is composed of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton, and the peelable fiber cotton prevents adhesion to the wound part. Alternatively, the above-described fibers may be used as they are for the purpose of reduction, but for example, those subjected to releasable processing such as silicone processing are suitable.

  Antibacterial fiber cotton is used to prevent the growth of germs, and the fiber is sterilized by dry heat sterilization, gas sterilization, gamma irradiation sterilization, etc. The antibacterial fiber etc. which apply | coated are mentioned, These are used individually or in combination of 2 or more types as needed.

  In addition, the heat-fusible fiber cotton is partly fused to form a network of peelable fiber cotton and antibacterial fiber cotton, and a large number of spaces are formed by the fused parts of the heat-fusible fiber cotton. Of these fibers, it is preferable to use fibers having a melting point lower than those of the peelable fiber cotton and the antibacterial fiber cotton. Moreover, you may use a polyethylene fiber and a polypropylene fiber. In particular, a core-sheath structure having the above-described fiber as a core and polyethylene as a sheath is preferable. The polyethylene is melted to melt the peelable fiber cotton and antibacterial fiber cotton to form a network.

  As the liquid-permeable fiber cotton in the present invention, a polyester fiber is particularly preferable. Specifically, the peelable fiber cotton is made of a polyester fiber treated with silicone, such as “Washable” (trade name, manufactured by Teijin Ltd.), and the antibacterial fiber cotton is made of, for example, “Chemitac”. It consists of polyester fiber that has undergone antibacterial treatment, such as Σ ”(trade name, manufactured by Teijin Ltd.), and heat-fusible fiber cotton is, for example,“ TBS ”(trade name, manufactured by Teijin Ltd.) Such a core-sheath structure fiber having a polyester fiber as a core and polyethylene as a sheath is preferable.

  As for the mixing ratio of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton, peelable fiber cotton is 30 to 50% by weight, antibacterial fiber cotton is 40 to 60% by weight, and heat-fusible It is preferable that fiber cotton is 5 to 15 weight%. When the peelable fiber cotton is less than 30% by weight, the effect of preventing adhesion to the wound portion is reduced. On the other hand, when it exceeds 50% by weight, the proportion of the antibacterial fiber cotton is reduced, and the effect of preventing the propagation of various bacteria may be reduced. is there. In addition, if the heat-fusible fiber cotton is less than 5% by weight, the network formed by the fusion part of the heat-fusible fiber cotton becomes insufficient, and the formation of the fine space part to be formed becomes insufficient, On the other hand, if the amount exceeds 15% by weight, networking proceeds excessively, elasticity and flexibility are reduced, and the wound may be stimulated and deteriorated.

  The liquid-permeable fiber cotton in the present invention is a mixture of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton at a predetermined ratio, is defatted with a defatting device, and is blown to a mixing tank. The mixing tank is passed once or twice, mixed, carded, formed into a predetermined size with a molding machine, heat treated with a heat treatment machine, and cut with a cutting device to obtain a liquid-permeable fiber cotton.

The molding size in the molding machine is not particularly limited, but is preferably about 1 to 2 m in width, about 1 to 2 m in length, and about 10 to 40 mm in thickness from the viewpoint of ease of manufacture and handleability.
Moreover, the size of the liquid-permeable fiber cotton obtained by cutting with a cutting device is not particularly limited, but is preferably about 50 to 200 mm in width, 50 to 200 mm in length, and about 10 to 30 mm in thickness.

  The liquid-permeable fiber cotton can be impregnated or coated with a disinfectant solution, a drug, or the like as necessary.

On the liquid-permeable fiber cotton layer obtained as described above, liquid-absorbent fiber cotton is laminated to form a wound pad.
A liquid absorptive fiber cotton layer is for absorbing the exudate sucked and permeated by the liquid permeable fiber cotton layer.
Therefore, what has liquid absorptivity is used, for example, gauze, natural cotton, cellulose fiber cotton etc. are mentioned, These are used individually or in combination of 2 or more types as needed. The gauze is used by being folded to a desired thickness.

  The size of the liquid-absorbing fiber cotton layer may be appropriately determined depending on the amount of exudate that the liquid-permeable fiber cotton layer sucks up and permeates, but is usually about the same as the liquid-permeable fiber cotton layer.

  The wound pad of the present invention consisting of the liquid-permeable fiber cotton layer and the liquid-absorbent fiber cotton layer is brought into contact with the wound part with the liquid-permeable fiber cotton layer on the wound side, and if necessary, a bandage, It is fixed with adhesive tape. In this case, the pad can be fixed after being covered with gauze, oil paper, a sheet or the like.

  In the wound pad of the present invention, the liquid-permeable fiber cotton layer sucks and transmits the exudate from the wound part, leads to the absorbent fiber cotton layer on the upper part, and the exudate is absorbed by the absorbent fiber cotton layer. The Therefore, since the liquid-permeable fiber cotton layer does not substantially absorb the exudate and is not contaminated, it is not necessary to replace the liquid-permeable fiber cotton layer frequently. Replace it.

  EXAMPLES Hereinafter, although an Example and a clinical trial example are given and this invention is demonstrated further in detail, this invention is not restrict | limited at all by these.

Example 1
Polyester fiber “Washable” (manufactured by Teijin Ltd.) 40% by weight as peelable fiber, antibacterial polyester fiber “Chemitack Σ” 50% by weight as antibacterial fiber, and heat fusion Mixing and defatting 10% by weight of core-sheathed fiber “TBS” (manufactured by Teijin Ltd.) with polyester fiber as the core and polyethylene as the sheath as the adhering fiber cotton, then blown to the first mixing tank After passing through the mixing tank, the mixture was supplied to the second mixing tank.
Next, it is carded with a card machine, molded into a size of 2 m wide × 1.5 m long × 20 mm thick with a molding machine, heat treated at 150 ° C. for 2 minutes with a heat treatment machine, and then 100 mm wide with a Thomson bar. It was press-cut into a length of 100 mm and a thickness of 20 mm to obtain a liquid-permeable fiber cotton layer.

  On the liquid permeable fiber cotton layer, a liquid absorbent fiber cotton layer obtained by folding dry heat-sterilized gauze into a width of 100 mm, a length of 100 mm, and a thickness of 40 mm is laminated to form a wound part as shown in FIG. I got a pad.

Example 2
In Example 1, polyethylene fiber is used as the heat-fusible fiber cotton, the size of the liquid-permeable fiber cotton is 200 mm wide × 200 mm long × 30 mm thick, and the size of the liquid absorbent fiber cotton made of gauze is 200 mm wide. X A length of 200 mm x a thickness of 30 mm was obtained in the same manner as in Example 1 to obtain a wound pad as shown in FIG.

Comparative Example 1
A wound pad as shown in FIG. 3 was obtained in the same manner as in Example 1 except that polyester cotton sterilized by dry heat was used as the liquid-permeable fiber cotton layer in Example 1.

Clinical trial example 1
After removing necrotic tissue of pressure ulcer (13 cm x 16 cm) in a sacral region of a 72-year-old male patient who is bedridden due to angina and anoxic encephalopathy, the wound is washed once a day with 500 ml of isodine saline. Isodine gel was applied to the part.
Using the four pads for wound part obtained in Example 1 on the isodine gel application surface, each liquid-permeable fiber cotton layer was brought into contact with the wound part, and the liquid-permeable fiber cotton layer was changed once a day. The liquid absorbent fiber cotton layer was changed twice a day.
The liquid-permeable fiber cotton layer sucked and permeated exudate from the wound well, and did not adhere to the wound. After 6 days, the growth of benign granulation was confirmed, and the pressure ulcer reduced and recovered. .

Clinical trial example 2
After removing necrotic tissue of pressure ulcer (15cm x 17cm) in a sacral region of an 80-year-old male patient who was bedridden due to chronic malabsorption, it was washed once a day with 500 ml of isodine saline and wounded. Isodine gel was applied.
Using one wound part pad obtained in Example 2 on the isodine gel application surface, the liquid-permeable fiber cotton layer was brought into contact with the wound part, and the liquid-permeable fiber cotton layer was changed once a day. The liquid absorbent fiber cotton layer was changed twice a day.
The liquid-permeable fiber cotton layer sucked and permeated exudate from the wound well, and did not adhere to the wound. After 6 days, the growth of benign granulation was confirmed, and the pressure ulcer reduced and recovered. .

Comparative clinical trial example 1
The procedure was the same as in Example 1 except that four wound pads in Comparative Example 1 were brought into contact with other pressure ulcers (12 cm × 14 cm) in the sacrum of the patient in Example 1.
Compared with the case of the trial example 1, the exudate sucking permeability was slightly inferior, and some adhesion to the wound portion of the permeable tissue cotton layer was observed, but after one week, the growth of benign granulation was confirmed, Reduced pressure ulcer recovery was observed.

  As described above, the wound pad of the present invention has a liquid-permeable fiber cotton layer that is in contact with the wound part and sucks and permeates exudate from the wound part. It consists of a mixture of cotton and heat-fusible fiber cotton, and the mixture is partly fused and networked with heat-fusible fiber cotton, so it is formed by the fused part of heat-fusible fiber cotton. The liquid-absorbing fibers laminated on the liquid-permeable fiber cotton layer, with a large number of fine spaces that function like the capillaries, effectively sucking and permeating exudate from the wound by capillary action It guide | induces to a cotton layer and makes this absorptive fiber cotton layer absorb.

  Thus, since the exudate permeates the liquid permeable fiber cotton layer and is hardly absorbed and retained in the layer, the exudate does not solidify the liquid permeable fiber cotton layer with the exudate. This prevents the trouble that the wound part, which has adhered to the wound part, is forcibly removed when the pad is replaced, and the wound part which has been healed is deteriorated again.

  Moreover, since the exudate only permeates the liquid-permeable fiber cotton layer and is hardly absorbed and retained, it is difficult to become a hotbed for propagation of various bacteria. Moreover, since the peelable fiber cotton which does not easily adhere to the wound part is mixed with the liquid-permeable fiber cotton layer, the adhesion of the pad to the wound part is further reduced.

  Furthermore, since antimicrobial fiber cotton is mixed in the liquid-permeable fiber cotton layer, the propagation of various bacteria is prevented, and healing of the wound part is promoted.

  Furthermore, the liquid-permeable fiber cotton layer has a network in which a mixture of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton is partially fused by the heat-fusible fiber cotton. Therefore, it is rich in elasticity and flexibility, does not irritate the wound part, and is very easy to handle, so that it is easy to handle with tweezers.

1 Liquid-permeable fiber cotton layer 1a Fusion part 2 Liquid-absorbable fiber cotton layer

Claims (8)

  A liquid-permeable fiber cotton layer for contacting the wound part and sucking and permeating exudate from the wound part, and a liquid-absorbing fiber laminated on the liquid-permeable fiber cotton layer and absorbing the exudate In the pad comprising a cotton layer, the liquid-permeable fiber cotton layer is made of a mixture of peelable fiber cotton, antibacterial fiber cotton, and heat-fusible fiber cotton, and the mixture is partially heat-bonded. A wound pad, which is fused with an adhesive fiber cotton.   The peelable fiber cotton is made of at least one selected from polyester fiber, polyamide fiber, polyurethane fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyacrylonitrile fiber, and polyvinyl alcohol fiber. The wound pad according to claim 1.   The antibacterial fiber cotton is composed of at least one selected from polyester fiber, polyamide fiber, polyurethane fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyacrylonitrile fiber, and polyvinyl alcohol fiber. The wound pad according to claim 1 or 2, characterized in that   Thermally fusible fiber cotton is polyester fiber, polyamide fiber, polyurethane fiber, polyolefin fiber, polystyrene fiber, polyvinyl chloride fiber, polyacrylonitrile fiber, polyvinyl alcohol fiber, polyethylene fiber, polypropylene fiber It consists of at least 1 sort chosen, The pad for wound parts according to any one of claims 1 to 3 characterized by things.   The wound part pad according to any one of claims 1 to 4, wherein the heat-fusible fiber cotton has a core-sheath structure.   The peelable fiber cotton is made of polyester fiber with silicone treatment, the antibacterial fiber cotton is made of polyester fiber with antibacterial treatment, the heat-fusible fiber cotton has the polyester fiber as the core, and the polyethylene as the sheath The wound pad according to claim 1, comprising a core-sheath structure.   The peelable fiber cotton is 30 to 50% by weight, the antibacterial fiber cotton is 40 to 60% by weight, and the heat-fusible fiber cotton is 5 to 15% by weight. The wound pad according to Item 1.   The wound pad according to any one of claims 1 to 7, wherein the liquid absorbent fiber cotton layer is made of at least one selected from gauze, natural cotton, and cellulose fiber cotton.

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