Premium
Development of an Autoflow Cruise Control System for a Centrifugal Pump
Author(s) -
Nishida Hiroshi,
Beppu Toshiyuki,
Nakajima Masato,
Nishinaka Tomohiro,
Nakatani Hayao,
Ihashi Kenji,
Katsumata Takahiro,
Kitamura Masaya,
Aomi Shigeyuki,
Endo Masahiro,
Koyanagi Hitoshi,
Oshiyama Hiroaki,
Nogawa Atsuhiko,
Amano Nobuhiko,
Nojiri Chisato,
Akutsu Tetsuzo
Publication year - 1995
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/j.1525-1594.1995.tb02410.x
Subject(s) - centrifugal pump , rotational speed , flow control (data) , volumetric flow rate , personal computer , flow (mathematics) , control system , impeller , simulation , engineering , computer science , mechanical engineering , mechanics , electrical engineering , physics , computer hardware , telecommunications
Abstract: To improve the ease of driving a centrifugal pump that 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. The Capiox Pump Console 3000 was controlled by a personal computer through a serial communication line. In the usual manual mode, the motor speed knob works as a pump speed control, and in the autoflow mode, the same knob works as a blood flow rate control. After selecting and obtaining the desired flow rate, the mode was changed from manual to autoflow mode. In the autoflow mode, the computer compares the desired flow rate with the actual flow measured by an ultrasonic Doppler flow‐meter and adjusts the motor rotational speed accordingly. During both in vivo and in vitro testing, this autoflow mode was able to return the changed flow that 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 s without any significant fluctuation. In conclusion, the newly developed computer controlled autoflow system was able to produce a reliable and effective flow regulation for a centrifugal pump.