Patent ID: 6942642

Claim:
A winged indwelling needle comprising: a hollow needle having a knife point at its tip, a hub provided at a rear end of the hollow needle, a tub-shaped member for housing the hollow needle and the hub slidingly in a longitudinal direction, a pair of wing-shaped members provided on an outer surface side of a side wall of the tub-shaped member, protrusion maintaining means for releasably maintaining a state in which the hollow needle is protruded as much as a predetermined length from a tip of the tub-shaped member, and housing maintaining means for maintaining a state in which the hollow needle is housed in the tub-shaped member, said winged indwelling needle further comprising a rack provided in junction with the rear end of the hub, and a gear engaged with the rack and supported on an inner surface side of the side wall of the tub-shaped member, said hollow needle being driven through the rack by rotating the gear to be housed in the tub-shaped members, wherein the housing maintaining means comprises a second protruded portion provided to be protruded from the tic, of the rack to its side, and an engaging concave portion provided on the inner surface side of the side wall at the rear end of the tub-shaped member and engaged with the second protruded portion so as to maintain a state in which the hollow is housed in the tub-shaped member.