Disposable prevents acupuncture and keeps somewhere needle

The utility model discloses a disposable prevents acupuncture and keeps somewhere needle, include pipe seat, needle tubing and prevent acupuncture protection device, prevent that acupuncture protection device comprises overcoat and spring leaf, the separation blade of spring leaf is can not be closed under natural state, the inner wall of overcoat has an arch at least, the arch is gradual change formula or the design of sudden change formula, the spring leaf is in has an arch on the elasticity arm at least, the overcoat have at least one with protruding screens of matcing on the spring leaf, the screens be used for with fixed and the locking of spring leaf and overcoat, the inner wall of pipe seat have at least one with protruding match recessed on the spring leaf, when the needle tubing is installed in the time of in the spring leaf, arch on the spring leaf just falls into the recessed department of pipe seat makes the spring leaf with fixed and the locking of pipe seat to prevent to injure medical personnel when the needle point from dialing out, but the wide application is kept somewhere in various clinical infusions and vein.