Chitosan bandage

Abstract

The invention discloses a chitosan bandage, comprising a substrate layer, a biological membrane layer and a protection layer, which are compounded into one piece. The biological membrane layer is compounded of a chitosan fiber non-woven fabric and a medical absorption pad by taking a medical polyurethane resin adhesive as an intermediate medium. The substrate layer is combined with the medical absorption pad of the biological membrane layer by a medical TPU film of the medical polyurethane resin adhesive. The protection layer covers the chitosan fiber non-woven fabric of the biological membrane layer. The chitosan bandage can efficiently protect a wound surface, stops blood, relieves pain, promotes tissue repair and accelerates wound surface healing. The chitosan bandage is suitable for caring and treating surgical incisions, cuts, bruises and plastic surgery wound surfaces, in clinic, is widely applied to surgery department, obstetrics and gynecology department, otolaryngologic department, orthopedics department and the like and widely applied to wound surface care after surgical incision stitching in inpatient department.

Description

technical field [0001] The invention belongs to medical equipment, in particular to a chitosan protective bandage. Background technique [0002] Different degrees of skin damage often occur in people's daily life, work, various diseases, operations and accidental injuries. When the skin is injured, it is urgent to use dressings to cover and protect the wound to provide an environment conducive to healing. The self-adhesive dressing that emerged after gradually replacing the traditional degreasing gauze has the characteristics of protecting the wound surface, absorbing exudate and not sticking to the wound. It is currently widely used in clinical practice and is still in use today. [0003] Self-adhesive dressings are generally composed of four parts. The first layer is a mesh non-woven fabric substrate coated with hot melt adhesive, which plays the role of fixing dressings, protecting wounds and blocking bacteria; the second layer is medical non-woven fabrics that absorb P...

AI Technical Summary

Problems solved by technology

However, there are still many disadvantages in self-adhesive dressings: 1) The anti-adhesive barrier layer does not have the function of hemostasis while playing the role of non-stick wounds. In clinical applications, wound bleeding will pass through the anti-stick barrier layer unimpeded , directly to the medical non-woven fabric absorbent layer, so that the liquid absorption capacity of the non-woven fabric absorbent layer can easily reach saturation, and blood often seeps through the mesh non-woven fabric substrate layer, which will increase the risk of bacterial infection and increase clinical dressing changes The number of times, increase the workload of medical staff and increase the discharge of medical waste and its pollution to the environment; 2) The anti-adhesive isolation layer is made of water-repellent material and is also a biologically inert material, which cannot play any physiological role in promoting wound healing. To a certain extent, the patient's wound healing time is prolonged, thereby increasing the potential opportunity cost such as the time cost of both the doctor and the patient; 3) The base material layer is not waterproof and has poor elasticity. It will increase the risk of wound infection and the workload of dressing change, and the dressing will easily fall off when used on joints that need to be stretched, which will also increase the workload and cost of dressing change

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