A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/32 (2006.01) A61M 5/00 (2006.01)
Patent
CA 2584106
A syringe (20) includes a hollow barrel (24), a hollow plunger (30) movable within the barrel and a needle assembly (56) secured within and at a distal end (26) of the barrel. The needle assembly includes a needle holder (58), a resilient member (84) that biases the needle holder toward the proximal end opening of the barrel, and a retaining member (64) releasably secured to the needle holder via a reduced material section. The retaining member maintains the needle holder at the distal end of the barrel against the bias of the resilient member. When the plunger is fully depressed within the barrel, the plunger engages the needle holder such that the retaining member is forced to break away and separate from the needle holder along the reduced material section to facilitate retraction of the needle holder and a needle secured to the needle holder into the retraction cavity (48) disposed within the plunger.
L'invention concerne une seringue comprenant un cylindre creux, un piston creux mobile dans le cylindre et un ensemble aiguille fixé à l'intérieur et au niveau d'une extrémité distale du cylindre. L'ensemble aiguille comprend un porte-aiguille, un élément élastique qui sollicite le porte-aiguille vers l'orifice d'extrémité proximale du cylindre, ainsi qu'un élément de retenue fixé amovible au porte-aiguille via une section de matière réduite. L'élément de retenue maintient le porte-aiguille au niveau de l'extrémité distale du cylindre contre la sollicitation de l'élément élastique. Lorsque le piston est entièrement enfoncé dans le cylindre, le piston vient en contact avec le porte-aiguille de sorte que l'élément de retenue est forcé à se rompre et à se séparer du porte-aiguille le long de la section de matière réduite afin de faciliter la rétraction du porte-aiguille et d'une aiguille fixée sur le porte-aiguille dans la cavité de rétraction située dans le piston.
Janek Greg
Runfola Vincent
Yu Li Xian
Deeth Williams Wall Llp
Safety Medical International Incorporated
LandOfFree
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