Two stage diafiltration method and apparatus

Details Two stage diafiltration method and apparatus Two stage diafiltration method and apparatus

A - Human Necessities

61

M

A61M 1/34 (2006.01) B01D 61/24 (2006.01) B01D 61/28 (2006.01) B01D 61/32 (2006.01)

Patent

CA 2427251

In a blood dialysis system including a source of substitution fluid (10) and a blood dialysis machine, a hemodiafiltration system having a first dialyzer (1) including a first blood compartment (4) having a first blood inlet which receives blood to be cleaned and a first blood outlet which expels partially blood and a first dialysate compartment (5) having a first dialysate inlet and a first dialysate outlet, means (8) for mixing the partially diafiltered blood with substitution fluid (10) from the source to obtain a blood/substitution fluid mixture (9), and a second dialyzer (2) including a second blood compartment (11) having a second blood inlet which receives the blood/substitution fluid mixture (9) and a second blood outlet which expels diafiltered blood and a second dialysate compartment (12) having a second dialysate inlet and a second dialysate outlet.

La présente invention concerne un système de dialyse sanguine comprenant une source de liquide de remplacement (10) et une machine de dialyse sanguine. Un système d'hémodiafiltration possède un premier dialyseur (1) comprenant un premier compartiment (4) de sang possédant un premier orifice d'entrée du sang qui reçoit le sang à purifier et un premier orifice de sortie du sang qui expulse le sang diafiltré partiellement, et un premier compartiment (5) pour dialysat présentant un premier orifice d'entrée du dialysat et un premier orifice de sortie du dialysat, des moyens (8) permettant de mélanger le sang partiellement diafiltré avec le liquide de remplacement (10) de la source afin d'obtenir un mélange (9) sang/liquide de remplacement, et un deuxième dialyseur (2) comprenant un deuxième compartiment (11) de sang présentant un deuxième orifice d'entrée du sang qui reçoit le mélange (9) sang/liquide de remplacement et un deuxième orifice de sortie du sang qui expulse le sang diafiltré, et un deuxième compartiment (12) pour dialysat présentant un deuxième orifice d'entrée du dialysat et un deuxième orifice de sortie du dialysat.

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