| 摘要 |
A safety syringe has a barrel, a needle hub movably received in the barrel and having an annular shoulder formed on an inner periphery of the needle hub and a needle extending out from the needle hub. When a hook engages with the annular shoulder and the plunger is moving forward, the stop and the needle hub are free of engagement with one another and thus the needle is slanted relative to the plunger for destruction of the needle.
|
