Wet dressing and preparation method thereof

Abstract

The invention relates to wet dressing and a preparation method thereof and belongs to the technical field of chemistry. The method for preparing the wet dressing, disclosed by the invention, comprises the steps of mixing star-like hydrophilic polyurethane and a foaming component and then carrying out foaming, thereby obtaining the wet dressing, wherein the foaming component comprises a foaming agent, a solvent, an interfacial agent, polyamine and a catalyst, the foaming agent comprises sodium bicarbonate, calcium carbonate and / or magnesium carbonate, the interfacial agent comprises polydimethylsiloxane, polyoxyalkylene and / or a polydimethylsiloxane-polyoxyalkylene copolymer, the polyamine comprises 1,2-ethylenediamine, 1,4-butanediamine, 1,6-hexamethylenediamine, triethylene tetramine and / or polyether diamine, and the catalyst comprises zinc isoocatanoate, triethylene diamine, dimethyl cyclohexylamine, dimethylethanolamine, triethylamine, 1,8-diazabicyclo[5.4.0]undec-7-ene and / or pentamethyl diethylene triamine.

Description

technical field [0001] The invention relates to a wet dressing and a preparation method thereof, belonging to the technical field of chemistry. Background technique [0002] In 1962, Dr. Winter of the University of London first confirmed with animal experiments (pigs) that the wound healing speed in a wet environment is twice as fast as that in a dry wound. In 1963, Hinman confirmed the scientificity of moist healing with human studies. In August 2000, the U.S. Food and Drug Administration (A) particularly emphasized in the newly promulgated industry guidelines for wound surface medical supplies (external medicines and dressings) that maintaining a moist environment on the wound surface is a standard treatment method. [0003] The advantages of wound healing in a humid environment include: providing a moderately moist environment for the wound, accelerating wound healing, and significantly shortening the treatment time of the wound; the humid environment will not form dry s...

AI Technical Summary

Problems solved by technology

However, these common wet dressings still have certain defects. For example, these common wet dressings are all fixed in shape. Due to the inconsistent shape of the wound, the dressing needs to be manually cut by the user during use, so that the dressing and the wound can be effectively and fully Fitting, which easily leads to the risk of dressing contamination, and is inconvenient to use; these common wet dressings are of fixed thickness, and due to the inconsistency of the wound depth, the dressing cannot fully fit the wound, which leads to unbalanced force and reduces The effect of the dressing; In addition, in the actual treatment of wounds, there are often penetrating wounds caused by external forces, and deep wounds such as fistula tracts and fistulas. There is no matching dressing to use directly, and the wound dressing can only be cut multiple times, and then Filling the wound makes the dressing more difficult to fit the wound, which is extremely inconvenient to use

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