Disposable syringe having a retractable needle

Details Disposable syringe having a retractable needle Disposable syringe having a retractable needle

A - Human Necessities

61

M

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

Patent

CA 2183599

A disposable syringe having a retractable needle and a spring (17) for automatically withdrawing the plunger (1) from the barrel after injection, wherein plunger-locking projections (19) prevent the plunger from being reinserted into the sleeve. The projections pierce the plunger automatically when excessive force is exerted thereon, whereby the plunger (1) is damaged and the syringe is rendered useless.

Dans cette seringue à aiguille escamotable, où un ressort (17) permet de remonter automatiquement le corps (1) dans son fourreau après une injection, les ergots (19) de blocage du corps empêchent le corps d'être redescendu dans le fourreau. Ils sont autoperçants de sorte qu'une pression exagérée entraîne la destruction du corps (1). et rend la seringue inutilisable.

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