and which is a hollow cylinder having an end wall portion 12 on which a needle attaching sleeve 13 of suitable design is mounted the needle attaching sleeve 13 can be molded to the barrel at the time of manufacture and suitable means of any desired type can be made to support the hypodermic needle 14 at the outer end of the needle attaching sleeve a syringe plunger 15 has a piston member on the interior of the barrel 11 and can be slid outwardly along the interior of the barrel to draw fluids or blood in through the hypodermic needle 14 which has a sharp open point the plunger also can be moved inwardly to discharge the barrel contents through the needle a needle guard assembly indicated generally at 20 is shown installed on the molded hub 19 of the needle adjacent the needle attaching sleeve 13 and can be attached to the needle in any suitable way preferably it will be molded in place the guard assembly also can be cemented or frictionally attached in place the needle guard assembly comprises a resilient or spring loaded folding support arm 21 that has a base end 22 which is the portion of the guard attached to the needle hub in a suitable manner the arm 21 includes a spring loaded elbow type hinge joint 23 approximately midway between the base end 22 and an outer end 25 the elbow hinge divides the arm into too.