Patent ID: 7306576

Claim:
A medical needle device having a shield for reduction of needlestick injuries, comprising: the shield for reduction of needlestick injuries including a substantially cylindrical shield tube as a main body; a hub inserted into the shield tube so that the hub is movable in an axial direction and whose rear end portion can be connected to an infusion tube; and a needle mounted to a front end portion of the hub, wherein a tip of the needle can be stored in an inner bore of the shield tube, wherein the hub has a protrusion at a portion of an outer peripheral surface at a front end portion thereof, a height of the protrusion being such that the protrusion protrudes beyond an inner diameter of the shield tube, and a gate groove is formed at an inner surface of the shield tube as a stripe shaped recess so as not to pass entirely through the wall of the shield tube and so as to extend from a distal end to the vicinity of a rear end of the shield tube, the gate groove having dimensions such that the protrusion at the front end portion of the hub can fit in a front end portion of the gate groove, in a state where the protrusion is exposed from the front end of the shield tube, the hub can rotate around an axis of the shield tube, at a rotational position of the protrusion at which it does not face a front end of the gate groove, a position of the hub is limited so as not to move toward a rear end side of the shield tube due to engagement of the protrusion with a front end face of the shield tube, and at a rotational position of the protrusion at which it faces the front end of the gate groove, the protrusion can slide into the gate groove.