Bacterial cellulose composite dressing

Abstract

The invention relates to a bacterial cellulose composite dressing, which is prepared by soaking a composite material composed of bacterial cellulose and non-woven fabrics or woven fabrics in an antibiotics-containing water solution. The bacterial cellulose composite dressing is prepared by following steps: choosing bacterial strains capable of secreting bacterial cellulose to made into a seed mash, then evenly dropwise adding the seed mash on non-woven fabrics or woven fabrics, which have been subjected to a sterilization treatment, adding a small amount of fermentation culture medium for cultivation of 12 to 48 hours, then adding fermentation culture medium, cultivating for 3 to 6d, taking out the fermentation products, and finally subjecting the fermentation products to a purifying treatment so as to obtain the bacterial cellulose composite non-woven fabrics or woven fabrics. The preparation method has the advantages of simple technology, and convenient operation, and is capable of preparing bacterial cellulose wound dressings with various functions according to the needs.

Description

technical field [0001] The invention relates to the technical field of medical equipment and its preparation, in particular to a bacterial cellulose composite dressing. Background technique [0002] Bacterial cellulose is a polymer compound composed of glucose linked by β-1,4-glycosidic chains. As an excellent biological material, it has its unique physical and chemical properties: BC has a natural three-dimensional nano-network structure; Tensile strength and elastic modulus; high hydrophilicity, good air permeability, water absorption, water permeability, extraordinary water holding capacity and high wet strength. In addition, a large number of studies have shown that bacterial cellulose has good in vivo and in vitro biocompatibility and good biodegradability, which makes bacterial cellulose itself applicable to the field of biomedicine. The use of simple bacterial cellulose as a dressing has been reported abroad, and it has been industrialized for clinical use. Therefor...

AI Technical Summary

Problems solved by technology

These methods can prepare bacterial cellulose composite materials, but the three-dimensional nano-network structure of bacterial cellulose itself is often destroyed during the preparation process, resulting in the degradation of some properties of the composite material due to the destruction of the bacterial cellulose structure, such as: mechanical properties Strength, water absorption performance, air permeability, etc.