Syringe

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/28 (2006.01)

Patent

CA 2745621

Provided is a syringe with which it is possible to hold with greater stability a liquid inside the barrel while maintaining the slidability and air-tightness between the barrel and the gasket without requiring fixation of silicone oil, and which is excellent in terms of accuracy of visual inspection. The syringe has a resin barrel, a gasket slidably inserted inside the barrel, a plunger attached to the gasket, and a silicone film obtained by applying silicone oil having a kinematic viscosity of 500 to 10,000 cSt over the inner peripheral surface of the barrel in an amount of 5 to 50 µg per 1 cm2 of area.

Linvention concerne une seringue permettant de maintenir un liquide avec une plus grande stabilité à lintérieur dun cylindre tout en maintenant la qualité de coulissement et détanchéité entre le cylindre et un joint sans avoir recours aux propriétés dadhésion de lhuile de silicone, et présentant une excellente qualité en termes de précision dinspection visuelle. La seringue comprend un cylindre en résine, un joint introduit de manière coulissante à lintérieur du cylindre, un plongeur fixé au joint, et un film de silicone obtenu par application dhuile de silicone présentant une viscosité dynamique de 500 à 100,000 cSt sur la surface périphérique intérieure du cylindre selon une quantité de 5 à 50 µg par 1 cm2 de zone de surface.

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