Roberta Surian
Experimental set-up for the characterization of 3D printed realistic phantoms of medium-large calibre arteries.
Rel. Diego Gallo, Claudio Chiastra, Elena Torta. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Biomedica, 2021
Abstract
Compliance is a parameter that describes the ability of blood vessels to expand and then recoil towards its initial form as a response to pressure changes. It can be used to give an estimation of the vessels elasticity and it represents an important cardiovascular risk factor, as compliance decreases with age. In particular, it is related to the arterial stiffness occurring as a consequence to vascular wall pathologies such as atherosclerosis or other wall degenerative changes. Therefore, it is important to be able to measure it accurately and reliably in experimental mock loop reproducing the function of the cardiovascular system. The present thesis aims at developing and testing a low cost and easy to use set-up able to estimate the compliance of vascular vessels models, when inserted in a hydraulic system that replicates realistic conditions.
Thus, the developed test bench includes the PD-1100 pulsatile pump from BDC Laboratories (CO, United States), two cameras from mobile phones positioned above and next to the phantom that record the external diameter deformations over time as the fluid flows, four piezoresistive pressure sensors placed in pairs upstream and downstream of the vessel model that are connected to the circuit by two 3D printed tube connectors, and a flow meter
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