Composite chitosan dressing

Abstract

The invention relates to a composite chitosan dressing, and belongs to the technical field of hemostatic materials. The composite chitosan dressing is of a layered structure with a functional layer, wherein the functional layer is formed by compounding a chitosan recovery promoting layer and a chitosan hemostasis layer; the functional components of the functional layer contain no other components except for chitosan. The composite dressing plays the role by directly contacting with red blood cells and blood platelets without depending on in-vivo hemostasis mechanisms, moreover no irritability is caused, no heat is released, and the role can come into play under the condition of low body temperature. The composite chitosan dressing provided by the invention is applicable to gynaecology and obstetrics surgery, endoscope minimally invasive surgery, general surgery department surgery, open type wound of orthopaedics departments, plastic and aesthetic surgery, outpatient service and emergency treatment trauma, superficial skin ulcer and the like, and can be applicable to wound fixation, nursing and dressing change of various puncture, conduits and cathetering, and to nursing and dressing change of wound and wound surfaces of individual bruise, contusion, knife wound, small-area burn and the like. The composite chitosan dressing has the effects of hemostasis, heal prompting, analgesia, antibiosis and scar generation prevention.

Description

technical field [0001] The invention belongs to the technical field of hemostatic materials, more specifically, the invention relates to a chitosan composite dressing for promoting wound healing. Background technique [0002] The skin is an important organ of the human body. It plays a role in controlling body temperature, preventing infection, immunity and sensing. Extensive damage to the skin may result from trauma, abrasions, skin ulcers, and burns. Injured skin can easily lead to bacterial infection, loss of body fluids and complications. In the prior art, wound dressings are usually used to protect the wound, absorb exudate, prevent wound infection, maintain a moist environment of the wound and promote wound healing. The wound dressing has the following requirements: 1) It has a softness similar to that of human skin, and it can maintain a certain shape and strength when it is wet; 2) It can maintain a moist environment on the wound surface and has a good ability to a...

AI Technical Summary

Problems solved by technology

Although blending can improve the mechanical and chemical properties of chitosan, it also limits the type and location of the wound; U.S. Patent No. 5,597,581 discloses that chitosan and alginate are blended by wet spinning, which is worthy of hemostatic and anti-aging properties. A dressing that has mildew and antibacterial properties and can promote healing. The fluid absorption capacity of the blended dressing is 28 times its own weight

But only for chronic wounds with a lot of exudate