| 摘要 |
A winged needle assembly includes a cannula; a needle hub; a protector of approximately cylindrical shape externally fitted onto the hub; and a pair of wings fixed to the outer peripheral surface of the protector; the hub being allowed, due to the resilient force of a spring, to slide from a first position where the distal end of the cannula protrudes beyond the distal end side of the protector to a second position where the cannula is accommodated in the protector, wherein: the spring is arranged on the outer periphery of the hub and is fixed in the axial direction between the proximal end of the protector and the proximal end of the hub, and first engaging means for engaging the hub at the first position so that it can be disengaged and second engaging means for engaging the hub at the second position so that it cannot be disengaged are provided.
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