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Flatworm-inspired medical adhesives stop blood lossloprox yeast infection g, h represent the mean ± s.d. (n = 40 for 2M-LIMB Surface; 20 for 2M-LIMB Internal; and 30 for 5M-LIMB Surface and Internal in e; n = 4 in g, h; The experiment was repeated three times independently with similar results for d). Credit: <i>Nature Communications</i> (2022). DOI: 10.1038/s41467-022-32803-1″ width=”800″ height=”530″>

Every year around 2 million people die worldwide from hemorrhaging or blood loss. Uncontrolled hemorrhaging accounts for more than 30% of trauma deaths. To stop the bleeding, doctors often apply pressure to the wound and seal the site with medical glue. But what happens when applying pressure is difficult or could make things worse? Or the surface of the wound is too bloody for glue?

Drawing inspiration from nature, researchers from McGill University have developed a medical adhesive that could save lives, modeled after structures found in marine animals like mussels and flatworms. Their research is published in Nature Communications.

“When applied to the bleeding site, the new adhesive uses suction to absorb blood, clear the surface for adhesion, and bond to the tissue providing a physical seal. The entire application process is quick and pressure-free, which is suitable for non-compressible hemorrhage situations, which are often life-threatening,” says lead author Guangyu Bao, a recently graduated Ph.D. student under the supervision of Professor Jianyu Li of Department of Mechanical Engineering.

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