| 摘要 |
PROBLEM TO BE SOLVED: To provide roller pumps which have high versatility and contribute to the simplification of the composition of blood treating circuit and are capable of controlling flow rates with high accuracy and a blood treating circuit. SOLUTION: This blood treating circuit 1A has a blood circulating path 2, a blood dialyzer 3 installed in mid-way thereof, a filtrate control section 4, a dialyzate control section 5 and a replenishing liquid control section 6. The filtrate control section 4 has a filtrate discharge path 41 which is connected to the filtrate discharge port 34 of the blood dialyzer 3, the roller pump 42 which is installed in mid-way thereof and is settable at plural modes, a vessel 43 for recovering the filtrate, a weight detecting means 44 which detects the weight over the entire part of the vessel 43 and a communication cable 45 which executes communication between the weight detecting means 44 and the roller pump 42. The roller pumps 42 controls its own pump discharge rate by calculating the integrated flow rate from the detected weight. The roller pumps 52, 62 also consist of the composition similar to the composition of the roller pump 42. The discharge rates of these pumps are controlled via communication cables 47 and 48 by the roller pump 42.
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