| 摘要 |
The invention concerns a syringe (S) comprising a body (K) forming a liquid reservoir, and a plunger (P) mounted mobile in the body (K). Said body (K) is housed axially mobile in a safety guard (1) between an active position wherein the needle (A) projects through the guard (1) distal end, and a protective position wherein the needle (A) is retracted into the guard (1) and towards which the body (K) is elastically returned. The body (K) is blocked relatively to the guard in active position by locking means (6) countering the elastic force returning the body, releasable by means (8) activated when the plunger (P) is in a position wherein it has injected the liquid.
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