Momentary high pressure valve

Details Momentary high pressure valve Momentary high pressure valve

A - Human Necessities

61

M

A61M 39/22 (2006.01) A61M 39/00 (2006.01)

Patent

CA 2624809

A valve (10) comprises a housing (12) with a valve element (14) which normally fluidicly couples a low pressure operating device, such as a transducer (30) and tubing (34) to be coupled to a patient (36) along a first flow path (42) including a flexible control wall (58) which normally interrupts a second flow path (72) between a high pressure generating source such as an injector syringe (32) and the tubing (34), but which flexes, in response to high pressure excursions from the syringe (32) to allow the second flow path (72) to open as it flexes into the first flow path (42) to thereby restrict same thus providing protection to the transducer (30) during the high pressure excursion from the syringe (32).

L'invention concerne une soupape (10) comportant un boîtier (12) muni d'un élément de soupape (14) qui met normalement en communication fluidique un dispositif fonctionnant à basse pression, tel qu'un transducteur (30), et un tubage (34) destiné à être relié à un patient (36) le long d'un premier chemin d'écoulement (42) comprenant une paroi de régulation (58) souple qui barre normalement un deuxième chemin d'écoulement (72) entre une source génératrice de haute pression telle qu'une seringue d'injection (32) et le tubage (34), mais fléchit en réponse à des déviations à haute pression de la seringue (32) pour permettre au deuxième chemin d'écoulement (72) de s'ouvrir lorsqu'elle fléchit vers le premier chemin d'écoulement (42) afin de rétrécir ainsi ce dernier, assurant ainsi la protection du transducteur (30) pendant la déviation à haute pression de la seringue (32).

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