Corrugated diaphragm shape design study for hemocompatible pulsatile ventricular assist devices. Issue 5 (4th April 2018)

• Record Type: Journal Article
• Authors: Loosli, C.; Moy, L.; Kress, G.; Mazza, E.; Ermanni, P.
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 21:Issue 5(2018)
• Page Start: 399
• Page End: 407
• Publication Date: 2018-04-04
• Subjects: Pulsatile ventricular assist device -- corrugated diaphragm -- shape parametrization -- nonlinear structural simulation with FEM; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2018.1434623
• Languages: English
• ISSNs: 1025-5842

Abstract

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.