The Analysis of Bioprosthetic Heart Valve with Different Suture Densities

摘要

In order to investigate the effect of suture density on the dynamic behavior of bioprosthetic heart valve, we establish the spherical leaflets models via computer aided design. Based on the parametric models of the heart valve, four kinds of suture density is analyzed and finite element analysis is used to simulate the mechanical performance of bioprosthetic heart valve. The results show that the stress distributions of the spherical valve leaflets with different suture density is quite different and the peak von-Mises with 50 suture points is lower than the other three kinds of suture density. From the whole loading process, we can find that the spherical valve leaflet with 50 suture points has better dynamic properties. This work is very helpful when manufacuturing the bioprosthetic heart valve, thus to prolong the lifetime of the bioprosthetic heart valve.