An electrohydraulic ventricular assist system with a linear actuator.
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.
Yagura
A
A
National Cardiovascular Center, Research Institute, Osaka, Japan.
Taenaka
Y
Y
Takano
H
H
Noda
H
H
Kinoshita
M
M
Tatsumi
E
E
Sekii
H
H
Sasaki
E
E
Akutsu
T
T
Oh-Umi
T
T
D000818:Animals; D011211:Electric Power Supplies; D004867:Equipment Design; D006353:Heart-Assist Devices; D006439:Hemodynamics; D008955:Models, Cardiovascular