Title :
Load sensitive mock circulatory system for left ventricular assist device controller evaluation and development
Author :
Williams, Jeffrey L. ; Antaki, James F. ; Boston, JR ; Williams, SL ; Woodard, JC ; Miller, PJ ; Kormos, RL
Author_Institution :
Dept. of Surg., Pittsburgh Univ., PA, USA
Abstract :
A mock circulatory system (MCS) capable of simulating the principal clinical hemodynamics that influence left ventricular assist device (LVAD) timing has been constructed. The MCS includes lumped compliance and resistance components, polyurethane trileaflet valves, and a voice-coil actuated piston pump to simulate left ventricular pumping action. The novelty of this system is its ability to mimic left ventricular pressure-volume relationships based upon a supplied time-varying elastance. The MCS provides a load-sensitive, “bench-top” simulation of the natural heart and systemic circulation on which automatic control algorithms for LVAD´s can be developed
Keywords :
artificial organs; biocontrol; biomedical equipment; controllers; haemodynamics; automatic control algorithms; left ventricular assist device controller; left ventricular pumping action simulation; load sensitive mock circulatory system; load-sensitive bench-top simulation; medical instrumentation; natural heart; polyurethane trileaflet valves; systemic circulation; time-varying elastance; voice-coil actuated piston pump; Actuators; Automatic control; Circulatory system; Control systems; Error correction; Feedback loop; Hardware; Heart; Hemodynamics; Humans; Motion control; Open loop systems; Pistons; Time varying systems; Timing; 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.1994.412090
