Safety syringe with rotating sleeve lock

Abstract

A safety lock syringe assembly comprising a barrel including a distal end and a proximal end, one or more lugs extending outwardly from an outer surface of the barrel, and a needle extending from the distal end, and a sleeve having threads that engage the one or more lugs, the sleeve includes a sleeve locking mechanism, wherein the sleeve threadably rotates in a first direction to a first position that exposes the needle, the sleeve threadably rotates in a second direction to a second position that shields the needle, and the sleeve threadably rotates in the second direction to a third position that engages the one or more lugs to the sleeve locking mechanism to irreversibly lock the shield to the barrel.

Dependencies are inferred from the claim text.