| 摘要 |
The injection syringe has at least one syringe body ( 12 ) provided with a needle ( 22 ) and a pusher ( 14 ) mounted so as to be able to move in the body ( 12 ). The syringe has a movable guard ( 36 ) for protecting the injection end ( 22 A) of the needle. The guard ( 36 ) is able to move with respect to the body ( 12 ) between a position retracted in the body ( 12 ) and an active protection position. The guard ( 36 ) and the body ( 12 ) have associated projecting and recessed reliefs for holding the guard in a retracted position. It has a retractable member ( 70 ) for positive holding of the engagement of the said associated reliefs, when the guard ( 36 ) is in a retracted position. The pusher ( 14 ) and the said holding member ( 70 ) are adapted for a retraction of the said holding member ( 70 ) under the action of the pushing in of the pusher ( 14 ) into the body, at the end of injection, providing a release of the positive holding of the engagement of the associated reliefs.
|
