Composite medical dressing using calcium alginate fibers

Abstract

The invention relates to a composite medical dressing using calcium alginate fibers. The composite medical dressing comprises a surface layer, an intermediate layer and a wound contact layer, and is characterized in that the surface layer is made of polyester fiber non-woven fabrics; the intermediate layer and the wound contact layer are made of calcium alginate fiber and polyvinyl alcohol fiber mixing needle-punched non-woven fabrics; the content of the calcium alginate fibers in the intermediate layer is 40%-70%, the content of polyvinyl alcohol fibers in the intermediate layer is 30%-60%, and the gram weight of the intermediate layer is 30-80 g / m<2>; and the content of the calcium alginate fibers in the wound contact layer is 80%-90%, the content of the polyvinyl alcohol fibers in the wound contact layer is 1%-20%, and the gram weight of the wound contact layer is 30-50 g / m<2>. According to the composite medical dressing, the dosage of the calcium alginate fibers can be decreased on the premise of guaranteeing healing effect, thus the production cost is reduced; and the composite medical dressing has the remarkable advantages that a processing technique is simple and chemical adhesives are avoided.

Description

technical field [0001] The invention belongs to medical dressings, in particular to a composite medical dressing using calcium alginate fibers. Background technique [0002] Chronic and complex wound care is the biggest challenge facing the global medical field. Diabetic foot ulcers, venous stasis ulcers, and pressure sores are typical chronic and complex wounds that seriously affect the health of patients, especially the elderly. However, existing medical Dressing products cannot meet the treatment needs of chronic and complex wounds. [0003] Modern medical theory proves that providing a relatively moist and closed environment to the wound is conducive to the healing of the wound. According to this theory, a series of new biocompatible high-tech dressings have been invented. Calcium alginate fiber has good biocompatibility and degradability. When in contact with the wound, the calcium ions in the calcium alginate fiber and the sodium ions in the exudate can also undergo i...

AI Technical Summary

Problems solved by technology

The application has the characteristics of good water absorption and non-adhesion to the wound, but there are also problems with complex processing procedures, and the use of chemical adhesives in the self-adhesive layer has a certain impact on the air permeability of the dressing

[0010] In short, the above-mentioned technical solutions and other calcium alginate fiber medical dressing products with similar structures generally have the defects that the cost and dressing performance cannot be balanced or the processing technology is complicated; some technical solutions also have the actual use of chemicals that may be harmful to the human body question

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