Abstract: The present invention provides an intravenous catheter apparatus having a retractable stylet, comprising a cannula member positioned at the end of a catheter, affixed to an end portion of a stylet body and engaged to an end portion of a tubular stylet protector chamber. The stylet protector chamber includes a stylet body plunger member having a stylet body and stylet on the distal end thereof, the stylet insertable in the bore of the cannula, and extending past the distal end of the cannula when the stylet is in the full extended position.

Abstract: A syringe apparatus having a syringe barrel open-ended on a first end for receiving a piston therewithin for movement down the syringe barrel, and having on the second end a constricted neck portion with a bore therethrough in communication with the bore within the syringe barrel. There would be further provided a needle portion having an upper base for mounting the upper portion of the needle, with the needle slidable within the bore of the constricted neck portion, from a position retracted into the neck portion to a position movable out of the end of the neck portion for injection. There is further provided a first and second locking members. The first locking member allows locking engagement between the slidable piston within the barrel and the lower base portion of the needle, so that when in the locked position the needle moves in relation with the piston portion.