Chitosan composite dressing and preparation method thereof

Abstract

The invention discloses a chitosan composite dressing and a preparation method thereof. The composite dressing comprises a chitosan dressing base layer, a medical water absorbing base layer, a waterproof layer and a medical adhesive tape adhesion layer, wherein the waterproof layer covers the medical adhesive tape adhesion layer; the medical water absorbing base layer is positioned between the chitosan dressing base layer and the waterproof layer; air holes are formed in the chitosan dressing base layer; the shapes and the areas of the chitosan dressing base layer, the medical water absorbing base layer and the waterproof layer are the same; anti-adhesion paper covers the chitosan dressing base layer; and the area of the anti-adhesion paper is consistent to that of the medical adhesive tape adhesion layer. The air holes on the chitosan dressing base layer and the medical water absorbing base layer can guarantee high permeability of water and air, and a wound is prevented from turning white and swelling. The medical water absorbing base layer has a water absorbing pad structure with high water absorption capability, tissue exudate penetrates through the air holes and is absorbed by the water absorbing pad, and efficient liquid absorption property is achieved. The waterproof layer can prevent excessive body fluid from permeating onto a medical adhesive tape, a part covered by the dressing can be fixed well, and the dressing cannot drop easily.

Description

technical field [0001] The patent of the invention relates to a medical wound dressing, in particular to a chitosan composite dressing and a preparation method thereof. Background technique [0002] With the development of society, clinical and war wound treatment have higher and higher requirements for local trauma hemostasis. Compared with traditional dressings, biological dressings have better compatibility, less toxic and side effects, low antigenicity, certain water permeability, and It has the advantages of reducing the frequency of wound dressing changes and improving the quality of wound healing. Biomedical materials are considered to be one of the most effective materials for local trauma hemostasis. Chitosan is a natural polymer derived from a wide range of deacetylated chitin. It has good biocompatibility and hemostatic effect, and can prevent the formation of fibrin, the proliferation of connective tissue cells and the synthesis of collagen. It has biological p...

AI Technical Summary

Problems solved by technology

The composite dressing uses an electrospinning method to prepare a chitosan cushion layer, and arranges vent holes on the chitosan cushion layer, and adds a layer of medical water-absorbing cushion layer and waterproof material between the chitosan cushion layer and the medical adhesive tape. Layer, the medical absorbent pad can increase the liquid absorption, and the waterproof layer prevents excessive body fluids from penetrating into the medical tape, solving the problems of the existing chitosan dressings such as air permeability and insufficient liquid absorption

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