The existing needles for vasopressor injection are about 30 cm long and opaque. Even on aspirating, it is almost impossible to see blood in the syringe unless a very large vessel is punctured. In case of an inadvertent puncture, it may cause severe complications due to the vasoconstrictor drug. 

EzVu Visual Vasopressor Injection Needle provides a transparent terminal portion (window) through which the blood stain can be seen as soon as the needle punctures a blood vessel. This helps in identifying inadvertent puncture into a blood vessel and to avoid injection of drug into such blood vessels.