Hydrocolloid dressing is one of the commonly used functional dressings. It is not only widely used in clinical wound treatment, but also in daily life. For example, hydrocolloid band-aid is used for small wound care, and hydrocolloid acne patch is used for local treatment of acne. Functional dressings are mainly used for wound treatment, promote wound healing, and are also widely used in the field of phlebitis prevention; acute small wounds are the time for Band-Aid to work; will shine. Although hydrocolloids have been widely used, these do not mean that you have a deep understanding of hydrocolloid dressings, so do you know about hydrocolloid dressings?
The hydrocolloid dressing is a dressing containing gelatinous substances. The structure is divided into three layers: the wound contact surface, the polymer matrix and the backing. The main components are sodium carboxymethyl cellulose, gelatin, pectin, etc. materials and adhesives, etc., and finally form an absorbent, self-adhesive, waterproof dressing, transparent or translucent, biodegradable, and can be used for different wounds and anatomical parts.
When a hydrocolloid dressing comes into contact with wound exudate, it absorbs the fluid and turns into a gel, a process known as gelation. The properties of the gel formed are determined by the production formulations of different manufacturers. The gel formed by the hydrocolloid dressings of some manufacturers has a certain cohesive force, and the gel is kept in the structure of the dressing; while the gel formed by the hydrocolloid dressings of some manufacturers is loose in texture, and the gel covers the wound and is easily affected by the wound. Mistaken for wound secretions, or even mistaken for infection, it is not the case. At this time, the gel plays a nourishing role in the wound and can promote wound healing.
Although the hydrocolloid dressing is a wet dressing, its permeability is also very good, and the water vapor of the hydrocolloid dressing in its intact state is not easily permeable, but when the gelation process begins, the permeability of the dressing will increase. Excess moisture can be lost through the dressing in the form of water vapor, thereby enhancing the dressing's ability to absorb exudate. At the same time, hydrocolloid dressings can maintain a good moist environment and promote fibrinolysis, angiogenesis and wound healing. Since the backing of the hydrocolloid dressing is a semi-permeable material (usually a polyurethane film), it can effectively prevent the invasion of external bacteria and viruses, and at the same time has good water resistance, so whether it is a wet wound or a dry wound, it can be Adhesion is easy.