A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/34 (2006.01) B01D 61/24 (2006.01) B01D 61/28 (2006.01)
Patent
CA 2338952
Apparatuses and methods for hemodiafiltration are disclosed. Blood to be cleaned (27) enters a first dialyzer cartridge (23) containing a semi-permeable membrane (24) that divides the dialyzer (23) into a blood compartment (45) and a dialysate compartment (46). As blood (27) passes through blood compartment (45), plasma water containing blood substances is filtered across semi-permeable membrane (24) and additional blood substances are transferred across semi-permeable membrane (24) by diffusion. Partially dialyzed blood (18) exiting dialyzer cartridge (23) is mixed with sterile substitution fluid (16) to form a blood/substitution fluid mixture (17) and the mixture (17) enters a second dialyzer cartridge (22) containing a semi-permeable membrane (25) which divides the dialyzer cartridge (22) into a blood compartment (47) and a dialysate compartment (48). As mixture (17) passes through blood compartment (47), plasma water containing blood substances is filtered across semi-permeable membrane (25) and additional blood substances are transferred across semi-permeable membrane (25) by diffusion. Cleansed blood exits second dialyzer cartridge (22) and is recycled to the patient.
L'invention concerne des dispositifs et des procédés d'hémodiafiltration. Le sang devant être épuré (27) entre dans une première cartouche (23) de dialyseur contenant une membrane (24) semi-perméable qui divise le dialyseur (23) en un compartiment (45) à sang et un compartiment (46) à dialysat. Lorsque le sang (27) traverse le compartiment (45) à sang, le liquide plasmatique contenant des composants sanguins est filtré à travers la membrane (24) semi-perméable et des composants sanguins additionnels sont transférés à travers le membrane (24) semi-perméable par diffusion. Le sang partiellement dialysé (18) sortant de la cartouche (23) du dialyseur est mélangé à un fluide (16) de substitution pour former un mélange (17) sang/fluide de substitution, et ce mélange (17) entre dans une seconde cartouche (22) de dialyse contenant une membrane (25) semi-perméable qui divise la cartouche du dialyseur en un compartiment (47) à sang et un compartiment (48) à dialysat. Lorsque le mélange (17) passe à travers le compartiment (47) à sang, le liquide plasmatique contenant des composants sanguins est filtré à travers la membrane (25) semi-perméable et des composants sanguins additionnels sont transférés à travers cette membrane (25) par diffusion. Le sang épuré sort de la seconde cartouche (22) du dialyseur et est renvoyée vers le patient.
Collins Gregory R.
Spence Edward C.
Nephros Inc.
Robic
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