Patent ID: 6511460
Filing Date: 2003-01-28
Classification: A61M

Abstract:
An injection syringe (10) comprising:an elongate syringe body (12) comprising a tube (18) and a perforated front wall (26) capable of receiving an injection needle (70); a rear actuating plunger (14) mounted so that it can move inside the tube (18),; a mobile needle shield (16) that can move externally along the syringe body (12) between a retracted position, drawn back from an injection end of the needle (70), and an active protecting position in which a front end of the shield (16) is forward of the injection end of said needle (70); a means for coupling (54) for axially interconnecting the shield (16) and the actuating plunger (14) to cause them to move simultaneously forward along a common portion; and a means for releasing (58) for releasing the means for coupling (54) to disconnect the actuating plunger (14) and the needle shield (16) during a final phase of fitting of the needle shield (16).