| 摘要 |
A disposable syringe contains the barrel with the tip and the needle, the rod and the piston, and the device for blocking the piston. The blocking device inside the syringe is designed as the blocking rod with the head or the flexible head with the cuts, which is rigidly attached to the end-face of the tip. The blocking device contains the conical opening or the opening with the flexible teeth around the perimeter of the opening.
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