Micro-valve

A - Human Necessities – 61 – M

Patent

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Details

A61M 39/24 (2006.01) F16K 15/14 (2006.01)

Patent

CA 2667528

A one-way valve (1 ) comprises a seat (5) and a membrane (4) having an inner portion (4a) that is stretched over the seat, wherein, in use, the inner membrane portion is selectively deflected from the seat such that a fluid path is created from one side of the membrane to the other so as to open the valve, and wherein an outer peripheral portion (4b) of the membrane is stiffer than the inner portion such that the membrane deflection is substantially restricted to only the inner portion. The one-way valve may be used in a pump for an infusion system.

L'invention porte sur une valve antireflux (1) qui comprend un siège (5) et une membrane (4) comportant une partie interne (4a) étirée par-dessus le siège, la partie membrane interne étant, en cours d'emploi, sélectivement défléchie par rapport au siège de sorte que se crée d'un côté de la membrane à l'autre une trajectoire fluidique qui permet l'ouverture de la valve, et une partie périphérique externe (4b) de la membrane étant plus rigide que la partie interne de manière que le fléchissement de la membrane est sensiblement limité à la partie interne uniquement. La valve antireflux de l'invention peut être utilisée dans une pompe pour système de perfusion.

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