Syringe

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/50 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2201507

A syringe comprising a tubular body (11) closed at one end (12) and open at the other end (13), a plunger (14) receivable in the body (11) to define a chamber (16) of variable volume, a needle support (24) adapted to support and accommodate a hollow needle, said needle support (24) being supported from or in the wall of the body (11) and being movable in a direction substantially parallel to the main axis of the body (11) between a first position at which the needle extends from the one end of the body (11) and the interior of the needle is in communication with the chamber (16), and a second position at which the outer end of the needle is in a retracted position, said needle support (24) having a protrusion (28) which is selectively engageable with the wall of the body (11) at the first and second positions to be able to be retained at said positions and receivable through the wall of the body (11) when at the second position to be engaged with the plunger (14) to prevent axial movement of both the needle support (24) and the plunger (14) with respect to the body (11).

Une seringue comprend un corps tubulaire (11) fermé à une extrémité (12) et ouvert à l'autre (13), un piston (14) reçu dans le corps (11) pour définir une chambre (16) de volume variable et un support (24) d'aiguille, conçu pour recevoir et soutenir une aiguille creuse, et monté sur la paroi du corps (11) ou se logeant dans celle-ci, ce support pouvant se déplacer dans une direction généralement parallèle à l'axe principal du corps (11), entre une position initiale dans laquelle l'aiguille s'étend à partir d'une extrémité du corps (11) et l'intérieur de l'aiguille communique avec la chambre (16), et une seconde position dans laquelle l'extrémité externe de l'aiguille est escamotée. Ce support (24) d'aiguille comporte un élément en saillie (28) qui vient sélectivement en appui sur la paroi du corps (11) dans les première et seconde positions afin d'être retenu dans lesdites positions et qui passe à travers ladite paroi, dans la seconde position, pour s'accoupler au piston (14) et prévenir tout mouvement axial du support (24) d'aiguille aussi bien que du piston (14) par rapport au corps (11).

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