Needle assembly

摘要

The shieldable needle assembly includes a needle cannula and a hub member supporting a proximal end of the needle cannula. A shield member is aligned with the hub member and extends co-axially about the needle cannula. The shield member is movable between a retracted position in which a puncture tip of the needle cannula is exposed, and an extended position covering the puncture tip. A pair of extendable members is connected between the hub and the shield members. The extendable members each include a pair of folding legs. A tension spring is connected between the extendable members. The hub member is movable in an axial direction away from the shield member.