A syringe

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/32 (2006.01) A61M 5/178 (2006.01) A61M 5/50 (2006.01)

Patent

CA 2585297

A syringe (1) comprises a barrel (2) for containing a substance to be injected, a needle carrier (12) for carrying a needle (10), and a plunger (3) which is adapted to be movable in the barrel 2 to expel the substance to be injected from the needle (10). The plunger (3) has a first part (3a), a second part (3b) and a resilient member (6) therebetween, the first (3a) and second (3b) parts being adapted to be releasably locked together to hold the resilient member (6) in a compressed state. In use, the first part 3a of the plunger (3) and the needle carrier (12) are adapted to engage one another following expulsion of the substance, and the second part (3b) of the plunger (3) is adapted to be unlocked from the first part (3a) following said engagement, allowing the resilient member (6) to expand to propel the needle carrier (12) into the barrel (2).

L'invention concerne une seringue (1) comprenant un cylindre (2) permettant de renfermer une substance à injecter, un support d'aiguille (12) permettant de supporter une aiguille (10) et un piston (3) conçu pour être mobile dans le cylindre (2), aux fins d'expulsion de la substance à injecter à partir de l'aiguille (10). Le piston (3) comprend une première partie (3a), une seconde partie (3b) et un élément élastique (6) entre ceux-ci, les première (3a) et seconde (3b) parties étant conçues pour être verrouillées ensemble afin de maintenir l'élément élastique (6) dans un état comprimé. Pendant l'utilisation, la première partie (3a) du piston (3) et le support d'aiguille (12) sont conçus pour venir en prise, suite à l'expulsion de la substance et la seconde partie (3b) du piston (3) est conçue pour être déverrouillée de la première partie (3a) suite à la prise, afin de permettre à l'élément élastique (6) de s'étendre, aux fins de propulsion du support d'aiguille (12) dans le cylindre (2).

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