Open AccessAn Electrohydraulic Ventricular Assist System with a Linear Actuator
Author(s) -
Akihiko Yagura,
Yoshiyuki Taenaka,
Hisateru Takano,
Hiroyuki Noda,
Masayuki Kinoshita,
Eisuke Tatsumi,
Hiroyoshi Sekii,
Eisaku Sasaki,
Tetsuzo Akutsu,
Takeharu Oh-Umi,
Kappei Tsukahara,
Katsuya Tsuchimoto
Publication year - 1989
Publication title -
asaio transactions
Language(s) - English
Resource type - Journals
eISSN - 2375-0952
pISSN - 0889-7190
DOI - 10.1097/00002480-198907000-00089
Subject(s) - afterload , hemodynamics , actuator , biomedical engineering , linear actuator , cardiology , control theory (sociology) , materials science , computer science , medicine , artificial intelligence , control (management)
An electrohydraulic ventricular assist system with a linear actuator was developed, and in vitro and in vivo evaluations were performed. During in vitro evaluations this system could yield 5.6 L/min of pump flow against a mean afterload of 100 mmHg. Durability tests were performed for more than 4 months. The system was implanted in three goats and a maximum pump flow of 4.2 L/min was obtained against a mean afterload of 100 mmHg, and 3.2 L/min against 130 mmHg. These evaluations have proven that the system can maintain stable hemodynamics under various conditions.