Corrugated diaphragm shape design study for hemocompatible pulsatile ventricular assist devices

C. Loosli, L. Moy, G. Kress, E. Mazza and P. Ermanni

Computer Methods in Biomechanics and Biomedical Engineering, 2018, vol. 21, issue 5, 399-407

Abstract: We aim to maximize the pumping volume of a pulsatile ventricular assist device, where the diaphragm is covered with an endothelial cell layer. These cells are estimated to survive a cyclic strain up to fifteen percent. To increase the pumping volume under this strain constraint we use an approach based on corrugation of the diaphragm in its reference configuration. The paper explains the parametrization scheme for finding corrugation shapes, addresses modeling and evaluation schemes and reports on the results of a parameter study. The results show that corrugated diaphragm shapes are effective for increasing pumping volumes under a strain constraint.

Date: 2018
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DOI: 10.1080/10255842.2018.1434623

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