Patent ID: 6893423

Claim:
An injection syringe having a syringe body provided with an injection needle and an actuation pusher mounted so as to be able to move in the body, the injection needle having an injection end and the syringe having a movable needle guard for protecting the injection end of the needle, which guard is able to move with respect to the body between a position in which it is retracted in the body away from the injection end of the needle and an active protection position in which the front end of the guard is at the front of the injection end of the needle, the guard and the body having associated projecting and recessed reliefs for holding the guard in a retracted position, wherein the syringe has a retractable retaining member for the positive retaining of the engagement of the associated projecting and recessed reliefs, when the needle guard is in a retracted position, and wherein the actuation pusher and said retaining member are adapted for a retraction of said retractable retaining member with respect to the needle guard, under the action of the pushing in of the actuation pusher into the body, at the end of injection, providing a release of the positive retaining of the engagement of the associated projecting and recessed reliefs.