The Easy-904 tourniquet is the perfect device to immobilize veins for accurate puncture and cannulation. This devices allows the punctured being to remain uncontested, as well as making the blood sampling fast without sacrificing quality. The Easy-904 tourniquet allows sufficient vein fill with an easy puncture, even with a large cannulas. This allows medications to then be incepted into the blood flow. There is also reduced tissue acidosis during extended tourniqueting when this device is used.