| 摘要 |
A syringe includes a cylindrical housing slidably received in a protective cover and having a needle secured to the front end, and a plunger slidably received in the cylindrical housing. The protective cover includes a longitudinal channel and includes a groove and a depression and a cavity formed in one end. The cylindrical housing includes a latch that may be forced into the depression of the protective cover in a detachably securing position and that may be selectively forced into the cavity of the protective cover in a locking position.
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