Estimation of the physiological mechanical conditioning in vascular tissue engineering by a predictive fluid-structure interaction approach

Claudia Tresoldi, Elena Bianchi, Alessandro Filippo Pellegata, Gabriele Dubini and Sara Mantero

Computer Methods in Biomechanics and Biomedical Engineering, 2017, vol. 20, issue 10, 1077-1088

Abstract: The in vitro replication of physiological mechanical conditioning through bioreactors plays a crucial role in the development of functional Small-Caliber Tissue-Engineered Blood Vessels. An in silico scaffold-specific model under pulsatile perfusion provided by a bioreactor was implemented using a fluid-structure interaction (FSI) approach for viscoelastic tubular scaffolds (e.g. decellularized swine arteries, DSA). Results of working pressures, circumferential deformations, and wall shear stress on DSA fell within the desired physiological range and indicated the ability of this model to correctly predict the mechanical conditioning acting on the cells-scaffold system. Consequently, the FSI model allowed us to a priori define the stimulation pattern, driving in vitro physiological maturation of scaffolds, especially with viscoelastic properties.

Date: 2017
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DOI: 10.1080/10255842.2017.1332192

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