A new nanoscale bandage uses a natural clotting agent found in blood to stop bleeding in an instant.
Researchers at MIT developed the bandage by coating the clotting agent thrombin onto sponges that can be fitted to just about any wound. Spraying the sponges with a biological nanoscale coating containing layers of tannic acid and thrombin created a film capable of being stored and easily carried. The sponges are particularly useful for stopping bleeding at the neck, a situation not suitable for tourniquets.
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