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Control System Modification of an Electromechanical Pulsatile Total Artifical Heart
Author(s) -
Ohushi Yukio,
Andrude Aron de,
Müller Jürgen,
Nosé Yukihiko
Publication year - 1997
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.1525-1594.1997.tb00496.x
Subject(s) - pulsatile flow , artificial heart , hall effect sensor , outflow , control system , controller (irrigation) , biomedical engineering , magnet , control theory (sociology) , materials science , engineering , computer science , electrical engineering , surgery , control (management) , physics , medicine , cardiology , agronomy , artificial intelligence , biology , meteorology
A reliable control system is one of the most important characteristics of the electromechanical pulsatile total artificial heart (TAH). Obtaining an error‐free procedure is essential for a successful in vivo implantation. To avoid any malfunction of the electrical control system, a modification of the previously designed controller was made to ensure stable pumping without the Hall effect sensor missensing. The installation position of the Hall effect sensor was changed from the top of the housing to the central piece with small magnets being installed in the stabilizer rods. The usage of the Hall effect sensor was chosen as an electrical switch. An in vitro one month running test of the TAH demonstrated adequate hydro‐dynamic performance with a completely error‐free pumping characteristic. The total efficiency of the TAH was 12.6 ± 1.4% at an 8 L/min outflow and 10.7 ± 1.0% at a 6 L/min outflow condition.