Liquid wound dressings have film-forming, rapid and other effects. An ionic membrane will be formed on the wound surface to prevent secondary injury and infection. Liquid dressings are widely used in various wounds, epidermal injuries, surgical wound care, repair of damaged barriers, and repair of various types of acne marks, etc.
Super absorbent wound dressings are used for washing, cleaning and protecting superficial wounds, abrasions, etc. in the dermis layer and above, providing a healing environment for superficial wounds and skin injuries. The wound is sealed with an elastic, tension, and semi-permeable film, creating a low-oxygen, slightly acidic moist environment between the dressing and the wound, inhibiting the growth of bacteria on the wound, promoting the synthesis of fibroblasts and stimulating the proliferation of blood vessels, so as not to produce scabs, reduce the pain of the wound, promote wound healing, reduce scarring, and actively repair the dermis.
Ⅰ. The mechanism of action of super absorbent wound dressings
1. Wound dressings can create a moist healing environment for wounds and promote cell migration
Compared with the traditional concept of dry wound healing, super absorbent wound dressings are conducive to the dissociation and division of cells, promote the release of growth factors, and promote the division and proliferation of epithelial cells in a wet environment, which can effectively shorten the duration of wound healing. time to promote rapid wound healing.
2. Wound dressings can activate wounds to initiate autolytic debridement
In a humid environment, the wound exudate contains a variety of enzymes and activating factors, among which protease and urokinase play a greater role. These two enzymes can effectively promote the dissolution of protease and necrotic tissue, and at the same time activate the activity of growth factors. Promote epithelial cell crawling and accelerate wound healing.
3. Wound dressings can reduce the incidence of wound infection in a moist environment
Studies have shown that in a humid environment, due to the effect of low oxygen and low pH, white blood cells can function more effectively, and the super absorbent wound pad can well inhibit the reproduction and growth of bacteria, thereby reducing the incidence of wound infection.
4. The wound dressing creates an anaerobic, slightly acidic environment
In a closed and humid environment, a hypoxic environment will be formed, and bacteria grow slowly in such an environment. At the same time, the hypoxic environment can promote the synthesis of fibroblasts and stimulate the proliferation of blood vessels.
Ⅱ. Choose the appropriate super absorbent wound dressing
The degree of understanding of the pathophysiology of wound repair, careful observation and judgment of specific wounds, and understanding of the functional properties of various wound dressings are all helpful for making appropriate dressing selections. The following basic principles should be followed when selecting super absorbent wound dressings:
1. The principle of best fit: the choice is safe, effective, convenient and appropriate.
2. The principle of individualization: choose appropriate wound dressings according to the stage of the wound.
3. Dynamic principle: choose wound dressings according to the wound healing in the course of treatment.
At present, there are many types of wound dressings on the market. In the selection process, it is necessary to adopt a comprehensive evaluation method according to the healing stage of the wound, and evaluate the physiology, structure, treatment and care of the wound, so as to choose the best high water absorption. Sexual wound dressings can effectively promote wound healing.
