Title :
Pneumatic driver for a pediatric ventricular assist device
Author :
Bearnson, G.B. ; Orth, J.L. ; Juretich, J.T. ; Holfert, J.W. ; Burns, G.L. ; Pantalos, G.M.
Author_Institution :
Artificial Heart Res. Lab., Utah Univ., Salt Lake City, UT, USA
Abstract :
A new driver for a pneumatically powered pediatric ventricular assist device has been developed. The driver consists of stepper motor with an eccentric on the shaft driving a slider mechanism. The slider is connected to a pusher plate and diaphragm inside of a housing which generates the pressure. At the beginning of each half cycle the pressure is vented to atmosphere using a solenoid valve. Drive pressure, heart rate, and percent of systole are controlled by controlling the motor´s step rate and shaft position
Keywords :
artificial organs; cardiology; haemodynamics; pneumatic systems; diaphragm; drive pressure; heart rate; pediatric ventricular assist device; pneumatic driver; pneumatically powered device; pusher plate; shaft position; slider mechanism; solenoid valve; stepper motor; systole percent; Atmosphere; Batteries; Blood; Cardiology; Cities and towns; Heart rate; Pressure control; Shafts; Solenoids; Valves;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412077
