title: A sophisticated electromechanical ventricular simulator for ventricular assist system testing.
abstract: With the advent of chronically implanted left ventricular assist systems, new adaptive control algorithms are being developed to allow automatic device control under a variety of hemodynamic conditions. An electromechanical pump is described that accurately mimics ventricular function. A pusher-plate sac pump with tri-leaflet valves is coupled to a high-speed linear motor. Pump chamber volume and pressure are constrained to follow the time-varying elastance model of ventricular function by use of a microprocessor feedback loop.
authors.affiliation: Novacor Division, Baxter Healthcare Corporation, Oakland, California 94621.
authors.forename: J C
authors.initials: JC
authors.lastname: Woodard
authors.forename: S M
authors.initials: SM
authors.lastname: Rock
authors.forename: P M
authors.initials: PM
authors.lastname: Portner
mesh_terms: D003198:Computer Simulation; D004867:Equipment Design; D006353:Heart-Assist Devices; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D008955:Models, Cardiovascular; D008962:Models, Theoretical; D012984:Software; D016276:Ventricular Function