| 摘要 |
A device for permanently blocking a syringe after the first injection, comprising a syringe barrel (1) having two non-return abutments (4 and 5) on a plunger head (2) designed to act as a plug when it is separated from the plunger body (3) by the user attempting to draw the plunger (3) back after the first injection. Said device is particularly useful for disabling a medical syringe aftter the first injection.
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