JPH0236517Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention prevents tissue damage and protects skin ulcers such as ulcers caused by trauma such as burns and abrasions, and ulcers and pressure ulcers caused by local blood circulation disorders. and dressing materials that exhibit excellent healing effects.

(Prior Art) Conventionally, the above-mentioned wounds have been treated by applying therapeutic drugs, applying disinfectant gauze and wrapping bandages, or pasting gauze with one-sided adhesive tape called Katsuto Kizuna, Kizuki Kizuna, etc. Wear it to protect it.

(Problem that the invention attempts to solve) However, such conventional ones can be removed,
Alternatively, during treatment, the exudate blisters that protect the wound surface may burst, making it difficult for epithelial cells to form in the wound base layer, causing pain to the patient. Even if left as is, it will not be absorbed into the body and the wound will likely become infected with bacteria or contaminated with excrement, so it must be replaced. Pain is inevitable during friction and removal of the wound surface. There are problems such as easily damaging the surface of a wound that is about to heal and making it difficult for the affected area to dry.

(Means for Solving the Problems) The present invention covers the above-mentioned drawbacks, and its structure is made by interweaving bioabsorbable synthetic polymer fibers and cellulose fibers, which has a tear strength of 10%. The present invention relates to a bioabsorbable wound dressing characterized in that the weight is adjusted to 300g. (However, the tear strength is measured by JIS L-1096 method.) In other words, the present invention is made of a combination of a bioabsorbable polymer material and a water-absorbing cellulose fiber, and eliminates the above-mentioned conventional drawbacks. be.

As the bioabsorbable synthetic polymer constituting the present invention, polyglycolic acid is most suitable in terms of absorbability and strength adjustment, but polylactide, polydioxanone, polycaprolactone, etc. may also be used in some cases. In addition, the tear strength was specified as 10 to 300 g because if it is less than 10 g, there will be problems with shape retention during the manufacturing process and it cannot be handled as a mesh-like knit or woven fabric, and if it exceeds 300 g, flexibility will be imparted. It feels bad to the touch because it is not embrittled, and it is painful to remove because it is not properly embrittled.
Also, it takes longer than necessary for absorption into the body, which is undesirable. To adjust the strength of polyglycolic acid, for example, it is possible to leave it in the air for a long time after knitting and weaving, but heat treatment is effective for short-term treatment, such as hot water treatment. It is preferable that the treatment be carried out at 90°C for about 3 hours, and the treatment with high-pressure steam should be carried out at 120°C for about 30 minutes. It is desirable to

Further, as the cellulose fiber to be mixed and woven with this, 30 to 100 count cotton yarn, which has been refined and has increased water absorption, is suitable. Use this every 2 to 10 times.

Furthermore, the knitting and weaving structures involved in interwoven weaving are usually well-known weaving structures such as flat, twill, and satin.
Knitting structures such as flat, milled, double-sided, and tricot can be arbitrarily selected and used, and cross-knitting of bioabsorbable polymer fiber yarn and cellulose fiber yarn,
The weaving rate can be selected arbitrarily depending on the purpose, but it is preferable to use every 2 to 10 cellulose fiber yarns.

(Function) Since the present invention is composed of an interwoven fabric of bioabsorbable synthetic polymer fibers and water-absorbing cellulose fibers, it has the following functions and effects.

That is, the bioabsorbable synthetic polymer filament layer adheres well to the skin, and body fluid exudates are absorbed and excreted into the cellulose-based fabric, thereby aiding the migration of epithelial cells and promoting wound healing. Furthermore, since the bioabsorbable fibers have been processed to be flexible, they adhere well to the wound area and decompose and lose strength within a certain short period of time. Furthermore, since it is a bioabsorbable material, it will not damage the wound or cause pain even if it is left as is until it heals.

(Example) The configuration will be illustrated below.

Figure 1 shows an example of the configuration of the present invention, in which a woven fabric 2 made by interweaving bioabsorbable synthetic polymer fibers and cellulose fibers is adhered to the adhesive tape surface of a single-sided adhesive tape 1. . The single-sided adhesive tape 1 is made by coating a synthetic resin film 3 with an adhesive 4, as shown in the sectional view of FIG.

In this structure, the fabric 2 is made by melt-spinning polyglycolic acid with an intrinsic viscosity of 1.2 to obtain yarn with 18 filaments and 2.5 denier per filament, as shown in FIG. It is made of absorbent fiber yarn 5 with increased viscosity and 60 count cotton yarn 6 that has been scoured in a plain weave so that the cotton yarns are positioned every fourth in both the warp and weft, and this is further woven in an autoclave for 121 It was processed at ℃ for 30 minutes to make it flexible and strong enough to be torn by hand, that is, the tear strength was adjusted to 150 g.

(Effects of the invention) Since the present invention has the above structure, it adheres well to the skin and body fluid exudates are absorbed and discharged by the cellulose fibers, which helps the migration of epithelial cells and promotes wound healing. It has been treated to be flexible, so it adheres well to the wound without irritating it.
Furthermore, since it is a bioabsorbable material, it will not damage the wound or cause pain even if left until it heals, and will not cause skin ulcers such as burns, ulcers caused by trauma such as abrasions, ulcers and bedsores due to local blood circulation disorders. It prevents tissue damage, protects the wound, and exhibits excellent healing effects.

Further, as shown in FIG. 4, if a fabric 7 knitted solely from cellulose fiber yarn is further superimposed on the side of the mixed fabric constructed as described above that does not come in contact with the skin to form a double structure, absorbency will be increased and It has the advantage of imparting cushioning properties. Such a structure has an extremely low ratio of water-absorbing and hygroscopic cellulose-based fibers in the weaving ratio of the above-mentioned bio-absorbable synthetic polymer and water-absorbing and hygroscopic cellulose-based fibers, or consists only of bio-absorbable synthetic polymers. It is suitable when you are

[Brief explanation of drawings]

Figure 1 is a front view illustrating the configuration of the present invention;
The figures are a sectional view taken along the line A-A in FIG. 1, FIG. 3 is a front view illustrating the fabric of the present invention, and FIG. 4 is a perspective view illustrating another example of the structure. 1... Single-sided adhesive tape, 2... Woven fabric, 5...
Bioabsorbable fiber yarn, 6... Cotton yarn, 7... Cellulose fiber single knitted fabric.

Claims (1)

[Claims for Utility Model Registration] 1. Made by mixing and weaving bioabsorbable synthetic polymer fibers and cellulose fibers, the tear strength of which is 10~10.
A bioabsorbable wound dressing characterized by being adjusted to 300g. (However, the tear strength is measured according to JIS L-1096 method.) 2. Bioabsorbability according to claim 1 of the utility model registration claim, characterized in that it is constructed by laminating a knitted fabric made of cellulose fibers. Wound dressings. 3. The bioabsorbable wound dressing according to claim 1, which is made of a plastic film sheet coated with an adhesive.