Blood treatment device
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United States of America Patent
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Jan 29, 2013
Grant Date -
Mar 31, 2011
app pub date -
May 20, 2010
filing date -
Aug 25, 2003
priority date (Note) -
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Abstract
A blood treatment device has a blood purification element divided into two chambers by a semipermeable membrane. With the device, nonphysiological conditions of the patient, in particular critical potassium concentrations and withdrawal rates, can be better prevented during the blood treatment. The device's analyzer unit determines on the basis of at least one sensor the concentration of a substance in the blood in the blood inlet line, the instantaneous transfer rate of this substance through the membrane, and the total quantity of this substance withdrawn during the treatment. The determined concentration is compared with a first admissible value range, the transfer rate is compared with a second admissible value range, and the quantity of the substance withdrawn is compared with a third value range. The device's control unit can instruct the device such that the blood treatment device performs the blood treatment while maintaining all three admissible value ranges.
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