Medical valve with expandable seal member

Details Medical valve with expandable seal member Medical valve with expandable seal member

A - Human Necessities

61

M

A61M 39/26 (2006.01) A61M 39/04 (2006.01)

Patent

CA 2459695

A medical valve has a resilient member (22) that is forcibly expanded to an expanded volume from a normal volume. Specifically, the valve operates in a closed mode that prevents fluid flow, and an open mode that permits fluid flow. To these ends, the valve has a housing having an inlet and an outlet, and the noted resilient member (22) within the housing. The resilient member and housing form a fluid channel between the inlet and the outlet. The fluid channel at least in part extends through the resilient member (22). The fluid channel at least in part extends through the resilient member. The fluid channel has a given portion formed by a variable volume portion (54) of the resilient member. The variable volume portion (54) has a normal volume when in the closed mode, and an expanded volume when in the open mode. The expanded volume is greater than the normal volume.

L'invention concerne une valve médicale présentant une élément élastique dilaté en force pour obtenir un volume dilaté à partir d'un volume normal. En particulier, la valve fonctionne dans un mode fermé évitant tout écoulement de fluide, et dans un mode ouvert permettant un écoulement de fluide. A cet effet, la vanne est dotée d'un logement présentant une entrée et une sortie, et ledit élément élastique est situé à l'intérieur de ce logement. Cet élément élastique et ledit logement forment un canal fluidique entre l'entrée et la sortie. Le canal fluidique s'étend au moins partiellement à travers l'élément élastique. Le canal fluidique comporte une portion formée par une partie à volume variable de l'élément élastique. La partie à volume variable présente un volume normal, lorsque celle-ci est en mode fermé, et un volume dilaté, lorsqu'elle est en mode ouvert. Le volume dilaté est supérieur au volume normal.

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