Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Reexamination Certificate
2002-11-22
2010-12-14
Kim, John (Department: 1797)
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
C210S085000, C210S090000, C210S097000, C210S143000, C210S258000, C210S321650, C210S416100, C210S645000, C210S646000, C210S739000, C210S929000, C604S004010, C604S005010, C604S006090, C604S006110, C604S028000, C604S065000, C604S067000
Reexamination Certificate
active
07850856
ABSTRACT:
The invention relates to a method for monitoring the supply of substitution liquid during an extracorporeal blood treatment and to an extracorporeal blood treatment unit equipped with a device for monitoring the supply of substitution liquid. The monitoring of the supply of substitution liquid is based on the measurement of pressure waves, which are generated by the substitution liquid pump, in the extracorporeal blood circulation system. A disturbance in the supply of substitution liquid is inferred when the amplitude of the pressure waves exceeds a predetermined limit value. The amplitude of the pressure waves is preferably monitored in the venous blood line.
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Wamsiedler Ralf
Zhang Wei
Fresenius Medical Care Deutschland GmbH
Kenyon & Kenyon LLP
Kim John
LandOfFree
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