| 摘要 |
An injection syringe (10) has an elongated syringe body (12) including a tube (18), a perforated front wall (26) for receiving an injection needle (70), and a rear actuating plunger (14) movably mounted inside the tube (18). A mobile needle shield (16) is externally movable along the syringe body (12) between a retracted position and an active position. An axial coupling mechanism (54) is provided between the shield (16) and the actuating plunger (14) for their simultaneous displacement towards the front on a common section. A release mechanism (58) is provided for releasing the coupling mechanism (54) to disengage the actuating plunger (14) and the needle shield (16) when the needle shield (16) is finally set in place.
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