| 摘要 |
A new and improved disposable needle system includes apparatus for receiving/dispensing fluids such as body fluids, medicaments, vaccines and the like comprising a disposable needle assembly having a removable cap for protecting an open outer end of an elongated metal needle and a removable inner end cap for enclosing an inner end portion of the needle. The needle is provided with a threaded plastic mount fixed intermediate the ends and the mount is threaded into an aperture in a forward wall of a tube holder adapted to receive and support a hollow tube in communication with the inner end portion of the needle when inserted into the interior of the tube holder with the mount threaded into the aperture in preparation for use. The tube holder includes a needle mount engaging sleeve or wrench permanently affixed and rotatably mounted on the forward end of the holder. The rotary sleeve comprises an open-ended socket-wrench-like device for rotating the needle mount to release the needle from the tube holder after use without requiring any human contact with the needle itself. In preparation for use, the inner end cap is removed and the uncovered mount is threaded into the aperture of the tube holder by rotating the outer cap, again without requiring manual contact with any portion of the needle or mount. When the needle is fully inserted into the tube holder, and thereafter when the needle is ready for use, the cap is removed to expose the outer end of the needle. The outer end cap has a one way clutch engaging the needle mount and the cap cannot be used for unthreading the needle after use. For this purpose, only the rotary sleeve may be used and this helps to insure that no inadvertent contact with a contaminated needle results as the needle is disposed of.
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