blood-stauncher
/ˈblʌdˌstɔːn(t)ʃə/(also blood-stancher)
noun
1A substance, device, etc., which staunches (or is reputed to staunch) bleeding.
2A person believed to have the power or ability to staunch bleeding by supernatural means.
Origin
Early 18th century; earliest use found in Daniel Turner (1667–1741), surgeon and physician. From blood + stancher.