Safety syringe with plunger locking means

Details Safety syringe with plunger locking means Safety syringe with plunger locking means

A - Human Necessities

61

M

A61M 5/50 (2006.01)

Patent

CA 2696951

A safety syringe (11) is disclosed. The safety syringe has a retractable needle facility (14/15) incorporated therein, the syringe comprising a barrel (12) and plunger (13) and needle assembly. The needle is caused to retract into the barrel of the syringe upon completion of injection once it has been used, by means of engagement between the needle assembly and the end of the plunger. Locking means (28) preferably in the form of a locking bush is provided in the body of the syringe to engage the plunger once it is retracted after use, so that the syringe is rendered incapable of being used further.

L'invention porte sur une seringue de sécurité (11) munie d'une installation d'aiguille rétractable (14/15) incorporée. La seringue comporte un cylindre (12), un piston (13) et un ensemble d'aiguille. A la fin de l'injection, l'aiguille est amenée à se rétracter dans le cylindre de la seringue par un engagement entre l'ensemble d'aiguille et l'extrémité du piston. Des moyens de verrouillage (28), de préférence sous la forme d'un manchon de verrouillage, sont disposés dans le corps de la seringue pour engager le piston rétracté, ce qui prévient son utilisation subséquent.

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