Abstract: In a medical needle device having a shield for reduction of needlestick injuries, a protrusion is formed on an outer peripheral surface of a hub to which a needle is mounted, a height of the protrusion being set so that the protrusion protrudes beyond an inner diameter of a shield tube, and a gate groove is formed at an inner surface of the shield tube to extend from a front end to the vicinity of a rear end, dimensions of the gate groove being such that the protrusion 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 with respect to 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.

Abstract: The medical needle device includes a winged shield (4) that has a substantially cylindrical shield tube (4a) and a pair of wings (5, 6) positioned at a front end side of the shield tube, a hub (2) that is inserted into an inner bore of the shield tube so as to be movable in an axial direction, and a needle (1) that is mounted to a front end of the hub. An infusion tube (3) can be attached to a rear end of the hub, and a tip of the needle can be stored in the inner bore of the shield tube. The shield tube is bendable at least in a part along the axial direction when the needle protrudes from a front end of the shield tube and is latched to the shield tube. Thereby, the medical needle device is bendable in a curve in a position that is sufficiently close to the needle, while having the winged shield.

Abstract: In a medical needle device having a shield for reduction of needlestick injuries, a protrusion is formed on an outer peripheral surface of a hub to which a needle is mounted, a height of the protrusion being set so that the protrusion protrudes beyond an inner diameter of a shield tube, and a gate groove is formed at an inner surface of the shield tube to extend from a front end to the vicinity of a rear end, dimensions of the gate groove being such that the protrusion 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 with respect to 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.