Injector module for a syringe, and pre-filled syringe...

Details Injector module for a syringe, and pre-filled syringe... Injector module for a syringe, and pre-filled syringe...

A - Human Necessities

61

M

A61M 5/32 (2006.01) A61M 5/24 (2006.01) A61M 5/28 (2006.01)

Patent

CA 2160540

An injector module (40) and a one- or two-component syringe comprising same, said module including a cylindrical barrel (41), a needle (43) extending from the end thereof, and a protective sleeve (42) for said needle. The sleeve consists of a single rigid member axially slidable over the cylindrical barrel (41). Said cylindrical barrel is provided with a skirt (46) with at least one flexible tab (47) engageable with an inner ring-shaped rib (50) of the rigid cylindrical sleeve to prevent the return of the sleeve once it has been moved forward. For this purpose, the flexible tabs (47) comprise a slanted end (47a) and a rounded edge (47b) which engage said inner rib.

L' invention concerne un module injecteur (40) et une seringue mono ou bi-composants comportant un tel module, ce dernier comprenant un corps cylindrique (41), une aiguille (43) montée à l'extrémité de ce corps et un manchon de protection (42) de cette aiguille. Ce manchon est constitué d'une pièce unique rigide montée par emboîtement et coulissement axial sur le corps cylindrique (41). Ce corps cylindrique est pourvu d'une jupe (46) comportant au moins une languette souple (47) agencée pour coopérer avec un bourrelet intérieur annulaire (50) du manchon cylindrique rigide pour former un dispositif anti- retour de ce manchon lorsqu'il est amené dans une position avancée. A cet effet, les languettes souples (47) comportent une extrémité inclinée (47a) et un rebord arrondi (47b) agencés pour coopérer avec ledit bourrelet intérieur.

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