| 摘要 |
2069412 9108788 PCTABS00005 Single-use safety syringe comprising a cylindrical body (1) provided with an opened, frusto-conical fore end (2), a sliding plunger (5) within said body, a needle (9) coupled to said plunger and assuming a retracted position in which it is received in said cylindrical body and an operative position in which it projects from said fore end to make an injection, self-locking means preventing the syringe from being filled again after the first injection, and means for retracting and locking under control said needle in the cylindrical body once made the injection.
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