遠心ポンプの自動流量制御（クルーズコントロール）システムの開発

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  • Development of an autoflow control system for a centrifugal pump.

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To improve the ease of driving a centrifugal pump which is afterload dependent, we have developed an automatic flow control system for the Terumo Capiox centrifugal pump system. This system consists of an autoflow “cruise” control system with a safety cutoff. In the usual manual mode, the motor speed knob works as a pump speed control, and in the autof low mode, the same knob works as a blood flow rate control. In the autof low mode, the computer compares the desired flow rate with the actual flow measured by an ultrasonic Doppler flowmeter, and adjusts the motor rotational speed accordingly. During both in-vivo and in vitro testing, this autof low mode was able to return the changed flow which was disrupted by either clamping and declamping of the tubing, or by the bolus injection of a vasomotor drug, to the selected flow rate within 10 seconds wihout any significant fluctuation. In conclusion, the newly developed computer controlled autof low system was able to produce a reliable and effective flow regulation for a centrifugal pump. We believe that we may be ultimately able to establish a novel of terl oad independent centrifugal pump with further development of this autof low mode.

収録刊行物

  • 人工臓器

    人工臓器 24 (2), 608-612, 1995

    一般社団法人 日本人工臓器学会

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