Dialysis machine and method of operating a dialysis machine
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United States of America Patent
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Jul 22, 2003
Grant Date -
Jul 11, 2002
app pub date -
Jun 15, 2001
filing date -
Jun 17, 2000
priority date (Note) -
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Abstract
A machine and method for preparing dialysis fluid for a dialysis machine. Fresh water is mixed with one or more dialysis fluid concentrates. The mixture of water and concentrates is conveyed into an equalizing chamber by a proportioning unit at a predetermined flow rate independent of the dialysate flow rate. Metered addition of the concentrates is performed volumetrically and is monitored on the basis of the conductivity of the dialysis fluid, which is measured by conductivity sensors. Because the mixture of water and concentrates is always conveyed at the same flow rate, the composition of the dialysis fluid can be determined with a high accuracy and the proportioning can be performed accurately.
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