| 摘要 |
A syringe has two groups of oppositely formed slip-proof straps axially formed on a periphery of the barrel so that when the user is holding the barrel to pull the recycled needle back into the barrel, the user is able to have a firm grip to the barrel. Further, the plunger of the syringe has a square head formed on a distal end of the plunger and extending out of the barrel so as to facilitate the user to pull the needle.
|
