This highly absorbent wound dressing, derived from natural seaweed, is primarily composed of sodium alginate and calcium alginate. Through ionotropic gelation (e.g., calcium ion crosslinking), it forms a fibrous or nonwoven structure. It is widely used in clinical nursing, especially for acute and chronic wounds with abundant exudate. When applied to the wound, it can stop bleeding; when exposed to water, it turns into a gel, which improves blood circulation in the wound area, accelerates scab formation, and promotes wound healing.
High hygroscopicity: It can absorb exudate equivalent to 14-15 times its own weight, forming a moist gel to avoid wound dehydration or maceration. The gel state reduces secondary damage during dressing changes. High-Efficiency Filtration: The large specific surface area of ultrafine fibers enables effective capture of microscopic particles such as bacteria, viruses, and dust (filtration efficiency can exceed 95%).
Hemostasis and wound healing promotion: Calcium ions in alginate participate in the blood clotting process to accelerate hemostasis, while the moist environment promotes granulation tissue growth and epithelialization.
Antibacterial property: Some alginate dressings are added with silver ions (such as silver alginate) to enhance antibacterial efficacy (e.g., against *Staphylococcus aureus* and *Pseudomonas aeruginosa*).
High-exuding wounds: Pressure ulcers (Stages III-IV), lower extremity venous ulcers, diabetic foot ulcers.
Traumatic wounds: Burns, postoperative wounds, skin donor sites.
Wounds at risk of infection: Requires combination with antimicrobials (such as silver alginate).
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