MEDICAL NEEDLE DEVICE HAVING WINGED SHIELD FOR THE REDUCTIONOF NEEDLE-STICK INJURIES

摘要

A medical needle device is provided with a winged shield 4 having a cylindrical shield tube 4a and wings 5 and 6 linked to a front end side of t he shield tube, a hub 2 inserted into the shield tube, and a cannula 1. The wings have wing protrusions 7 and 8. The shield tube has through holes 9 and 10 on its tubular wall and front end protrusions 15 and 16 formed on its inner circumferential surface at an axial position corresponding to the through holes. The hub has a step portion 26 formed at an outer surface of front end portion. The front end protrusion can be engaged with the step portion of the hub, and further the wing protrusions can be engaged with the step portion by bending the two wings so that the wing protrusions pass through the through hole. With the cannula protruding from the front end of the shield tube, the hub is held so as not to move inside the shield tube toward the base end by letting the front end protrusion or the wing protrusions engaged with the step portion.