Abstract: The needle guard employs a spring clip that has a pair of apertured locks through which the needle passes. The aperture in the foremost lock is defined by cutouts that deflect inwardly upon withdrawal of the needle in order to block a return passage of the needle. The end of the needle is enlarged to abut against the rearmost lock and to further prevent a return passage through the foremost lock. The enlarged end of the needle is trapped between the two locks after being drawn into the needle guard.

Abstract: The positive flow needleless connector has a cannula slideably mounted within a tubular housing. A sleeve-like septum seals the cannula from an outside environment while also sealing an internal chamber of the cannula from a flow path in a male luer housing. Movement of the cannula from an extended position to a retracted position against the force of a spring exposes a second inlet of the cannula to the flow path of the male luer housing to permit flow therebetween. During disconnect, the inlet from the cannula is sealed prior to the cannula returning the extended position. This allows fluid to move from a reservoir between the cannula and septum to move into the passage of the male luer housing.