Researchers at MIT and Hong Kong University used nanotechnology to develop a liquid which could stop bleeding in animal subjects. When the liquid, composed of protein fragments called peptides, is applied to open wounds, the peptides self-assemble into a nanoscale protective barrier gel that seals the wound and halts bleeding. Once the injury heals, the nontoxic gel is broken down into molecules that cells can use as building blocks for tissue repair.
“We have found a way to stop bleeding, in less than 15 seconds, that could revolutionize bleeding control,” said Rutledge Ellis-Behnke, research scientist in the MIT Department of Brain and Cognitive Sciences.
Doctors currently have few effective methods to stop bleeding without causing other damage. More than 57 million Americans undergo nonelective surgery each year, and as much as 50% of surgical time is spent working to control bleeding. Current tools used to stop bleeding include clamps, pressure, cauterization, vasoconstriction and sponges.