Multiobjective Optimization of Rotodynamic Blood Pumps: The Use Case of a Cavopulmonary Assist Device.
Journal
ASAIO journal (American Society for Artificial Internal Organs : 1992)
ISSN: 1538-943X
Titre abrégé: ASAIO J
Pays: United States
ID NLM: 9204109
Informations de publication
Date de publication:
31 May 2024
31 May 2024
Historique:
medline:
3
6
2024
pubmed:
3
6
2024
entrez:
3
6
2024
Statut:
aheadofprint
Résumé
Comprehensive optimization of rotodynamic blood pumps (RBPs) requires the consideration of three partially conflicting objectives: size, hemocompatibility, and motor efficiency. Optimizing these individual objectives independently, the potential of multiobjective optimizations often remains untapped. This study aimed at the multiobjective optimization of an RBP for cavopulmonary support accounting for all three objectives simultaneously. Hydraulic and electromagnetic design spaces were characterized using computational fluid dynamics and computational electromagnetics, respectively. Design variables included secondary flow gap widths, impeller diameters, and stator heights. The size objective encompassed the RBP widths and heights, the hemocompatibility objective was a weighted composite measure of well-established metrics, and the motor objective was determined by motor losses. Multiobjective optimization was performed through Pareto analysis. 81 designs were considered, and 21 Pareto-optimal designs were identified. The Pareto analysis indicated that hemocompatibility performance could be improved by 72.4% with a concomitant 1.5% reduction in the baseline pump volume. This, however, entailed an increase in motor losses by 0.2 W, while still meeting design requirements, with maximum local temperature rises remaining below 0.4 K. The multiobjective optimization led to a Pareto front, demonstrating the feasibility to improve hemocompatibility at reduced pump volume, however, at the cost of a diminished yet still acceptable motor performance.
Identifiants
pubmed: 38829985
doi: 10.1097/MAT.0000000000002237
pii: 00002480-990000000-00497
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © ASAIO 2024.
Déclaration de conflit d'intérêts
Disclosure: M.G. received personal fees and grants from BerlinHeart GmbH. The other authors have no conflicts of interest to report.
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