Abstract: A medical needle device includes a winged shield (4) having a substantially cylindrical shaped shield cylinder (4a) and wings (5, 6) connected to the front end side thereof, a needle base (2) inserted in the shield cylinder (4a), and a needle (1). The wings have wing projections (7, 8) and the shield cylinder has through holes (9, 10) on the wall thereof. By overlaying the wings along the side surface of the shield cylinder, each of the wing projections can be inserted into the inner cavity of the shield cylinder via the through hole. Thereby, without requiring a special operation in the sticking operation, each of the wing projections can prevent the needle base from moving in the axial direction and can hold the needle base in the shield cylinder reliably in a state in which the needle protrudes from the front end of the shield cylinder by a predetermined length.

Abstract: A medical needle device includes a winged shield (4) having a substantially cylindrical shaped shield cylinder (4a) and wings (5, 6) connected to the front end side thereof, a needle base (2) inserted in the shield cylinder (4a), and a needle (1). The wings have wing projections (7, 8) and the shield cylinder has through holes (9, 10) on the wall thereof. By overlaying the wings along the side surface of the shield cylinder, each of the wing projections can be inserted into the inner cavity of the shield cylinder via the through hole. Thereby, without requiring a special operation in the sticking operation, each of the wing projections can prevent the needle base from moving in the axial direction and can hold the needle base in the shield cylinder reliably in a state in which the needle protrudes from the front end of the shield cylinder by a predetermined length.

Abstract: 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 the 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.