The paste sticks onto wet tissue firmly by repelling blood. Surgeons hope it can save time—and lives.
EXCESSIVE BLEEDING IS, in some sense, an engineering problem.
“For us, everything is a machine, even a human body,” says Hyunwoo Yuk, a research scientist in mechanical engineering at MIT. “They are malfunctioning and breaking, and we have some mechanical way to solve it.”
About 1.9 million people die every year from blood loss, sometimes from trauma, sometimes on the operating table. Bleeding bodies are wet, prone to infection, and need urgent care. Yet it’s hard to create a seal on wet tissue, and most commercial products used to stop dangerous bleeding rely on coagulants which take minutes to work. Some people don’t have minutes.