Patent ID: 7601139

Claim:
A safety hypodermic needle assembly comprising: a needle hub having an inner needle assembly, a proximal end and a distal end, the proximal end comprising a threaded member and a syringe tip receiving chamber, and the distal end comprising an opening; a needle secured to the inner needle assembly and having a needle tip; a resilient member; a spring clip for obstructing the needle tip movable by the resilient member to a blocking position; a pressure trigger having a fluid path, an opening, and a pusher end axially aligned with the syringe tip receiving chamber and slidably movable relative thereto; a pressure fitting having an elongated arm and a tapered ramp disposed on the elongated arm, the pressure fitting is configured to compress the resilient member when the needle assembly is in a ready position by engaging with the inner needle assembly; and wherein the spring clip is configured to block the needle tip when the pressure trigger is moved distally within the syringe tip receiving chamber to disengage the pressure fitting from the inner needle assembly.