Improvements to a single use syringe

Details Improvements to a single use syringe Improvements to a single use syringe

A - Human Necessities

61

M

A61M 5/34 (2006.01) A61M 5/32 (2006.01) A61M 5/50 (2006.01)

Patent

CA 2444886

A single use syringe uses a "pinching" action between a specially designed plunger and a specially designed needle holder to shoot the needle back into the syringe body upon completion of the piston stroke. The needle is not biased by a helical spring and the syringe remains in an unbiased condition until the plunger is pushed against the needle holder that creates the pinching action to shoot the needle back into the syringe body.

Selon la présente invention, une seringue à usage unique utilise une action de "pincement" entre un piston spécialement conçu et un porte-aiguille spécialement conçu pour faire rentrer l'aiguille dans le corps de seringue lors de l'arrivée en fin de course du piston. L'aiguille n'est pas sollicitée par un ressort hélicoïdal et la seringue reste dans un état non sollicité jusqu'à ce que le piston soit poussé contre le porte-aiguille qui créé l'action de pincement permettant de faire rentrer l'aiguille dans le corps d'aiguille.

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