Medical dressing for promoting wound healing and preparation method thereof

Abstract

The invention discloses medical dressing for promoting wound healing and a preparation method thereof. The medical dressing for promoting wound healing comprises a non-woven fabric substrate layer, a pressure-sensitive adhesive layer and a water-absorbing pad from bottom to top in sequence; the water-absorbing pad is formed by compounding chitosan non-woven fabric and a nano-material non-woven fabric. The medical dressing disclosed by the invention completely considers factors such as wound infection, sterilization, circulation promotion and wound dryness; the adopted chitosan non-woven fabric can prevent wound infection; nano sliver can achieve an effect of restraining bacteria to prevent infection; nano-scale tourmaline can release negative ions and far-infrared rays, so that an effect of accelerating microcirculation of tissues around the wound can be achieved, and the wound can be accelerated to heal; high water-absorbing fiber can absorb wound excreta, can keep the wound clean and dry, and can provide a good environment for wound healing. And therefore, the medical dressing disclosed by the invention can achieve the effect of promoting wound healing very well.

Description

technical field [0001] The invention relates to a medical dressing for promoting wound healing and a preparation method thereof. Background technique [0002] Medical dressings are medical materials used to cover sores, wounds or other damage. With the in-depth study of the pathophysiology of the wound healing process, people's understanding of the wound healing process has become more and more profound, which has led to the continuous improvement and development of medical wound dressings. However, the existing medical dressings cannot prevent infection. Wound inflammation leads to repeated wounds and prolonged healing time. At the same time, wound secretions will cause a poor healing environment, and the growth of cells around the wound requires an environment of fresh air. [0003] The industry has also been researching, and the Chinese patent document CN1339322A discloses "A Material with the Function of Promoting Wound Healing and its Preparation and Use". Fiber 5-40w...

AI Technical Summary

Problems solved by technology

[0004] 1. The manufacturing process is complicated and the cost is high

In the above patent, the blended yarn needs sizing, and the weaving process is complicated, especially in the process of making dressings from gauze. Due to the need for cutting, folding, pasting and other processes of gauze, multiple devices are required, non-continuous production, more manual intervention, and high manufacturing costs.

[0005] 2. Gauze containing nanomaterials does have the ability to promote wound healing through modification, but it has structural defects. The wound is in direct contact with the gauze, and inflammatory secretions penetrate into the gauze. As the wound surface heals, the gauze and gauze The occurrence of adhesions will inevitably cause the wound to rupture again during the dressing change process, which will slow down the healing process and increase the probability of infection

[0006] 3. As a wound care product, the market capacity is large and there are many production links, so it will be difficult for non-automatic production to keep up with the pace of market demand

[0007] Therefore, existing medical dressings cannot achieve the effect of promoting wound healing

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