Programmable, fluid pressure actuated blood processing...

F - Mech Eng,Light,Heat,Weapons – 04 – B

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F04B 49/00 (2006.01) A61M 1/10 (2006.01) A61M 1/30 (2006.01) F04B 13/02 (2006.01) F04B 43/02 (2006.01) F04B 49/06 (2006.01) A61M 1/36 (2006.01)

Patent

CA 2347537

Programmable, fluid pressure actuated blood processing systems (10) and methods are used in association with a blood separation device (18). The systems and methods employ a cassette (28), which contains several preformed, pneumatically actuated pump stations (PP1-PP4), several preformed fluid flow paths (F1-F38), and several preformed, pneumatically actuated (VA1-VA23) valves (1-23) in the fluid flow paths. The systems and methods also employ progr ammable pneumatic actuators (PA1-PA4) to hold the cassette and selectively apply pneumatic force to the valves and the pump stations.

L'invention porte sur des systèmes (10) programmables de traitement du sang actionnés par la pression du fluide, et sur des procédés utilisés en association avec un dispositif (18) de séparation du sang. Les systèmes et procédés de cette invention utilisent une cassette (28) qui contient plusieurs stations (PP1-PP4) de pompage pneumatiques, préformées, plusieurs voies (F1-F38) préformées d'écoulement du fluide et plusieurs valves (VA1-VA23) (1-23) pneumatiques, préformées, placées dans les voies d'écoulement du fluide. Ces systèmes et procédés utilisent également des actionneurs pneumatiques programmables (PA1-PA4) pour retenir la cassette et appliquer sélectivement une force pneumatique sur les valves et les stations de pompage.

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