Chitosan wound dressing

Abstract

The invention relates to a chitosan wound dressing. The chitosan wound dressing is of a layered structure comprising a functional layer, and the functional layer is formed by a chitosan healing promoting layer and a chitosan hemostatic layer. The wound dressing directly makes contact with red blood cells and blood platelets so as to exert the effect without relying on an internal hemostatic mechanism; and irritability is not caused, heat is not released, and the effect can be exerted under the condition of hypothermia. The chitosan wound dressing is suitable for wound fixing, nursing and dressing change of gynecological and obstetric surgery, endoscopic minimally invasive surgery, general surgery, orthopaedic open wounds, cosmetic plastic surgery, outpatient and emergency trauma, superficial skin ulcers and the like as well as various punctures, catheters and cathetering, and nursing and dressing change of wounds and wound surfaces of personal bruises, contusions, knife wounds, small-area burns and the like. The chitosan wound dressing has the effects of hemostasis, healing promoting, analgesia, antibiosis and scar generation inhibition.

Description

Technical field: [0001] The invention belongs to the technical field of hemostatic materials, more specifically, the invention relates to a chitosan wound 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 abs...

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

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