Dressing with chitosan hydrogel

Abstract

A dressing with chitosan hydrogel is provided with elastic webbing serving as base cloth (1), the base cloth is rectangular or is in a rounded rectangle shape, the inner face of the base cloth is coated with a mucilage glue layer (2), a protection layer (3) is stuck on the mucilage glue layer in the middle of the base cloth, the protection layer is covered with separating paper (4), and the outer edge of the separating paper is fixed to the corresponding exposed part of the periphery of the base cloth. The dressing with the chitosan hydrogel is characterized in that a medical TPU film fixed on the outer side of the base cloth in a hot pressing mode serves as a reinforcing rib layer (5) of an X structure, the reinforcing rib layer is composed of a reinforcing rib (5.1) and a reinforcing rib (5.2), the reinforcing ribs are located on the diagonal lines of the base cloth and are crossed in the center of the base cloth, the width of the reinforcing ribs is 5-10% of the width of the base cloth, the thickness of the reinforcing rib layer is 0.1-0.5 mm, the protection layer is sponge fabric made of polylactic acid, the thickness of the protection layer is 0.5-1 mm, the protection layer is soaked with the chitosan hydrogel, and the chitosan hydrogel comprises 3-5 w / v% of chitosan.

Description

field of invention [0001] The invention relates to a medical dressing. Background technique [0002] Medical dressings generally include an adhesive layer, a base cloth and a protective layer, which are attached to the surface of the wound through the protective layer to prevent further infection of the wound. However, in order to ensure that the surface is breathable and movable, the general dressing base layer often adopts materials with high air permeability, low elastic modulus, and high elongation, but this material has poor fixation performance. When it is fixed to a certain extent, it cannot meet the needs, and the medical thermoplastic polyurethane resin (TPU) film has a high elastic modulus, which can fix the wound well, but it is completely airtight, the sense of restraint is too strong, and the use compliance not good. [0003] Chitosan is obtained by deacetylation of chitin (chitin), which exists widely in nature, and has good biocompatibility, safety and biode...

AI Technical Summary

Problems solved by technology

However, in order to ensure that the surface is breathable and movable, the general dressing base layer often adopts materials with high air permeability, low elastic modulus, and high elongation, but this material has poor fixation performance. When it is fixed to a certain extent, it cannot meet the needs, and the medical thermoplastic polyurethane resin (TPU) film has a high elastic modulus, which can fix the wound well, but it is completely airtight, the sense of restraint is too strong, and the use compliance not good

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