A novel method to quantitate bioprosthetic valve leaflet mechanical stress: a numerical and in vitro study

STANOVA ; GODIO-RABOUTET ; MASSON ; PY ; BARRAGAN ; THOLLON ; RIEU ; PIBAROT

Type de document
ARTICLE A COMITE DE LECTURE REPERTORIE DANS BDI (ACL)
Langue
anglais
Auteur
STANOVA ; GODIO-RABOUTET ; MASSON ; PY ; BARRAGAN ; THOLLON ; RIEU ; PIBAROT
Résumé / Abstract
An original in vitro/in silico method was developed to estimate the local and global mechanical stress applied on the bioprosthetic valve leaflet, which can be important for better understanding of the valve durability. A non-contact system based on stereophotogammetry and digital image correlation enabled filming and studying the valve leaflet movement frame by frame and performing three-dimensional analysis. The deformation was applied in a finite element model in order to calculate the local mechanical stress applied. High stress regions were primarily observed in the upper leaflet edge and belly and to a lesser extent at the free leaflet edge.
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