Ionic enhanced dialysis/disfiltration system

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/34 (2006.01) A61M 1/16 (2006.01) B01D 61/24 (2006.01) B01D 61/28 (2006.01)

Patent

CA 2581005

A dual-stage system and methods for using the same include first and second filtration cartridges is provided and is particularly suited for hemodiafiltration and/or hemodialysis. As fluid enters the first filtration cartridge, the hydroxyl ion concentration and hence pH is increased by exposing it to either a strong base or a salt of a weak acid across a filter membrane. This stage allows for improved removal of certain toxins in the fluid, such as protein-bound substances that disassociate more readily from proteins at higher pH. As the filtered fluid enters the second filtration cartridge, the pH of the fluid is restored to normal levels prior to infusion to a patient.

La présente invention a trait à un système à deux étages et à ses procédés d'utilisation comportant des première et deuxième cartouches et particulièrement approprié pour l'hémodiafiltration et/ou l'hémodialyse. Lors de la pénétration de fluide dans la première cartouche de filtration, la concentration en ions d'hydroxyle et donc le pH s'accroît par son exposition à soit une base forte ou un sel d'acide faible à travers la membrane. Cet étage permet l'élimination améliorée de certaines toxines dans le fluide, telles que des substances liées aux protéines qui se dissocient plus facilement des protéines à un pH supérieur. Lors de la pénétration du fluide filtré dans la deuxième cartouche, le pH du fluide est ramené aux niveaux normaux préalablement à la perfusion à un patient.

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