Ionic enhanced dialysis/diafiltration system
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United States of America Patent
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-
Nov 23, 2004
Grant Date -
Jan 16, 2003
app pub date -
Jul 9, 2002
filing date -
Jan 11, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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 diafiltration cartridge, the hydrogenion concentration (pH) is reduced by exposing it to an acidic solution such as citric 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 lower 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.
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