tourniquet

kiristysside A tightly-compressed bandage used to stop bleeding by stopping the flow of blood through a large artery in a limb.
(RQ:Chmbrs YngrSt)

His forefathers had been, as a rule, professional men—physicians and lawyers; his grandfather died under the walls of Chapultepec Castle while twisting a tourniquet for a cursing dragoon; an uncle remained indefinitely at Malvern Hill;(nb..).