A surgical instrument or substance used to stop bleeding, either by clamping blood vessels or promoting clotting.
From haemostasis + -at (agent noun suffix). A haemostat is a tool or device that performs the function of stopping blood—literally an 'agent of haemostasis.'
Surgeons have hundreds of specialized tools, and hemostats range from simple clamps to advanced techniques like lasers and electrical cautery—each surgeon has preferences based on the type of bleeding they're trying to control.
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