Wound dressing is a material for dressing wounds, covering materials for sores, wounds or other damage.

The types of wound dressings are:

1. Passive dressing (traditional dressing), passively covering the wound and absorbing exudates, provides limited protection for the wound.

2. There are various forms of interaction between the dressing and the wound dressing, such as absorbing exudate and toxic substances, allowing gas exchange, thus creating an ideal environment for healing, blocking the outer layer structure, preventing the microorganism invasion in the environment, and preventing the cross infection of the wound.

3. Biological active dressing (closed dressing).

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