Nano antibacterial anti-infective self-degrading medical dressing

Abstract

The invention discloses a nano antibacterial anti-infective self-degrading medical dressing, comprising a dressing body and a film, wherein the dressing body is composed of a plurality of functional layers including an outer protective layer, a hydrogel layer, a hydrophilic antibacterial layer and a natural gauze layer; the outer protective layer is a semi-permeable membrane or a multilayer perforated nonwoven fabric, and isolates dust, bacteria, microorganisms and the like in a physical isolation manner under the premise of ensuring ventilation; the hydrogel layer controls the temperature ofthe dressing and cools a wound; the hydrophilic antibacterial layer can absorb the exudate (tissue fluid, pus water and the like) of the wound through hydrophilic particles, and can inhibit bacteria continuously through antibacterial particles; the natural gauze layer is applied to the wound; a drug sustained-release ring on the natural gauze layer is shaped by silk fibroin nano fibers, and a therapeutic drug can be injected into the drug sustained-release ring. When applied to the wound, the medical dressing can sustainedly releases drugs and continuously applies the drugs to the wound to achieve a therapeutic purpose.

Description

Technical field [0001] The invention relates to the technical field of medical supplies, in particular to a nano antibacterial and anti-infection self-degrading medical dressing. Background technique [0002] Wound healing is an extremely complex physiological process. The patient's physical fitness is the internal factor that determines wound healing, but the role of medical dressings cannot be ignored. Medical dressings are a very important class of medical textiles. With the advancement of science and technology and various needs in the medical field, new medical dressings with certain functions have attracted more and more attention. [0003] Most of the medical dressings currently used are sterile gauze, and when used, there are often the following problems: 1. Therapeutic drugs are mostly coated on the surface of the sterile gauze, which lasts for a short time and has a poor slow-release effect, and cannot continue to treat the wound; 2. Lack of necessary temperature control...

AI Technical Summary

Problems solved by technology

[0003] Most of the medical dressings currently used are sterile gauze. When using them, there are often the following problems: 1. Most of the therapeutic drugs are coated on the surface of the sterile gauze, which lasts for a short time and has poor slow-release effect, so it cannot continue to treat the wound; 2. Lack of necessary temperature control, especially in high temperature conditions, can not effectively control the wound temperature, which is not conducive to wound recovery; 3. The adsorption effect is poor, mainly due to the poor hydrophilicity of medical dressings, which cannot effectively and quickly absorb tissue fluid or concentrated water, etc. It is easy to cause wound ulceration; 4. Poor continuous antibacterial ability can easily lead to bacterial growth, which is not conducive to wound recovery

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