A passive safety needle device is disclosed having a housing, a needle hub, aneedle cannula, aretractable sheath, a spring to bias the retractable sheath in a distaldirection to cover the distalend of the needle cannula, a radial protrusion to cause the spring to movefrom the proximalspring position to the distal spring position, and a catch to secure thedistal end of the spring tothe distal end of the housing. The spring may bias the retractable sheath in adistal direction tocover the distal end of the needle cannula. The radial protrusion causes thespring to movefrom a proximal spring position to the distal spring position towards thecatch located at thedistal end of the housing.
