| 摘要 |
The blood of a patient to be dialyzed is circulated out of the patient's body through an extracorporeal circuit including a blood pump and a dialyzer. The dialyzer has a solution supply piping for the supply of a dialyzing solution thereto and a discharge piping for the discharge of the dialyzing solution therefrom, and the discharge piping is branched into a discharge passage and a metering passage. The supply piping, the discharge passage and the metering passage have disposed thereon a supply control valve, a discharge control valve and a combination of a metering valve and a metering device, respectively. During a washing step, the supply control valve is opened while the discharge and metering control valves are opened and closed, respectively, so that the dialyzing solution within the dialyzer is replenished. During a dialyzing step, only the metering valve is opened so that the water removal can take place in the dialyzer and the quantity of the dialyzing solution increased as a result of the water removal can be measured by the metering device. The washing and dialyzing steps are alternately and cyclically performed.
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