Patent ID: 7377911

Claim:
A medical needle device comprising: a winged shield for reduction of needle-stick injuries having a substantially cylindrical shield tube and a pair of wings linked to a front end side of the shield tube; a hub inserted into an inner bore of the shield tube such that it can be moved in an axial direction; and a cannula mounted to a front end portion of the hub, so that the cannula can be stored away in the inner bore of the shield tube, covering a front end of the cannula, wherein the wings have wing protrusions protruding from respective wing faces at a base region of the wings, the shield tube has a pair of through holes formed separately on both sides of its tubular wall and a pair of a front end protrusions formed on its inner circumferential surface, each through hole being positioned so that one wing protrusion can be inserted and each of the front end protrusions being positioned at an axial position corresponding substantially to the through hole and arranged between the pair of through holes in the circumferential direction of the shield tube and the hub has a main tubular portion and a holding portion positioned near the front end of the main tubular portion, the holding portion having a large diameter portion whose diameter is larger than that of the main tubular portion so that step portion is formed by a rear end surface of the large diameter portion; wherein the front end protrusions of the shield tube can be engaged with the step portion of the hub, and in such engaged state the wing protrusions can be engaged with the step portion of the hub by bending the two wings along the shield tube side walls so that the wing protrusions pass through the through hole; and wherein with the cannula protruding for a predetermined length 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 engage with the step portion of the hub.