Chitosan healing promoting layer and chitosan hemostasis layer composite dressing

Abstract

The invention relates to a chitosan healing promoting layer and chitosan hemostasis layer composite dressing. The chitosan composite dressing is of a layered structure comprising a functional layer, and the functional layer is formed by compositing a chitosan healing promoting layer and a chitosan hemostasis layer. The composite dressing makes direct contact with red blood cells and platelets to play roles and does not depend on a hemostasis mechanism in the body; and besides, the composite dressing cannot cause allergy, cannot release heat and can play roles under the condition of hypothermia. The chitosan composite dressing is applicable to gynecological and obstetric surgeries, endoscopic minimally invasive surgeries, general surgeries, orthopedic open type wounds, plastic and aestheticsurgeries, outpatient emergency trauma, superficial skin ulcer as well as wound fixation, nursing and dressing change of various punctures, catheters and indwelling catheters and nursing and dressingchange of wound surfaces such as personal bruises, contusions, knife wounds and small-area burns. The chitosan composite dressing has functions of hemostasis, healing promotion, pain relieving, antisepsis 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 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...

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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