Blood/gas separator and flow system

Details Blood/gas separator and flow system Blood/gas separator and flow system

A - Human Necessities

61

M

128/81

A61M 1/36 (2006.01) A61M 1/14 (2006.01) A61M 1/32 (2006.01)

Patent

CA 2017460

A blood reservoir is formed with a hard outer shell housing defining at least one blood compartment. A flexible bag is mounted in the outer shell and is connected to the reservoir inlet port to allow blood to directly enter the flexible bag. The bag includes two oppositely positioned ends, one of which includes a microporous screen and is situated to lie partially below a minimum level attained by blood in the reservoir. The second bag end is substantially open, and includes a porous element partially coated with an antifoaming agent. The coated portion of the element is positioned above a maximum level attained by the blood in the hard shell. The potential of excessive mixing between the blood and air is reduced by controlling the expansion of the bag during blood flow.

Un réservoir de sang est composé d'une coque externe rigide définissant au moins un compartiment à sang. Un sac souple est monté sur la coque externe et est relié à l'orifice d'entrée du réservoir pour permettre au sang de s'écouler directement dans le sac souple. Le sac comprend deux extrémités opposées, dont une comporte un écran microporeux et est placée de façon à se tenir en partie sous un niveau minimum atteint par le sang dans le réservoir. La seconde extrémité du sac est essentiellement ouverte et comporte un élément poreux recouvert en partie d'un antimousse. La partie recouverte de l'élément est placée au-dessus d'un niveau maximum atteint par le sang dans la coque rigide. La possibilité d'un mélange excessif entre le sang et l'air est réduite en contrôlant l'expansion du sac pendant l'écoulement sanguin.

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