3 adjectives to describe tourniquets

There they found Pete still shouting for help, kneeling above the body of a man, and working desperately to arrange an effectual tourniquet.

The water expelled by the elbowed pipes reacted through pressure, as in the hydraulic tourniquet of cabinets of physics, and effected the propulsion of the vessel.

A tight tourniquet can be tied a little above the wound, such that one finger should be able to pass under the tourniquet.

3 adjectives to describe  tourniquets