A Dynamic Lumped Parameter Model of the Left Ventricular Assisted Circulation

Author

Einly Lim ; Cloherty, S.L. ; Reizes, J.A. ; Mason, D.G. ; Salamonsen, R.F. ; Karantonis, D.M. ; Lovell, N.H.

Author_Institution

Univ. of New South Wales, Sydney

fYear

2007

fDate

22-26 Aug. 2007

Firstpage

3990

Lastpage

3993

Abstract

A lumped parameter model of the cardiovascular system (CVS) and its interaction with an implantable rotary blood pump (iRBP) is presented. The CVS model consists of the heart, the systemic and the pulmonary circulations. The pump model is made up of three differential equations, i.e. the motor equation, the torque equation and the hydraulic equation. Qualitative comparison with data from ex vivo porcine experiments suggests that the model is able to simulate different physiologically significant pumping states with varying pump speed set points. The combined CVS- iRBP model is suitable for use as a tool for investigating changes in the circulatory system parameters in the presence of the pump, and for testing control algorithms.

Keywords

blood vessels; cardiovascular system; patient treatment; prosthetics; cardiovascular system; differential equations; dynamic lumped parameter model; heart; hydraulic equation; implantable rotary blood pump; left ventricular assisted circulation; motor equation; pulmonary circulation; pumping states; systemic circulation; torque equation; Blood; Cardiovascular system; Circulatory system; Differential equations; Heart; Humans; Impellers; Pulse width modulation; Stator windings; Torque; Heart Ventricles; Heart-Assist Devices; Humans; Models, Cardiovascular; Pulmonary Circulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE

Conference_Location

Lyon

ISSN

1557-170X

Print_ISBN

978-1-4244-0787-3

Type

conf

DOI

10.1109/IEMBS.2007.4353208

Filename

4353208