Hemodynamic study of the elliptic St. Jude Medical valve: A computational study.

摘要: Despite successful implantation of St. Jude Medical bileaflet mechanical heart valves, red blood cell lysis and thrombogenic complications associated with these types valves are yet to be addressed. In our previous study, we proposed an elliptic housing where 10% ovality was applied the valves. Our preliminary results suggested that overall hemodynamic performance improved in both closing opening phases. this evaluated hemodynamics around leaflets phase using a more sophisticated computational platform, fluid dynamics. Results lower shear stress wall values design. This improvement is characterized by regions downstream leaflets, pressure drop across valve smaller recirculation zones sinuses areas. The design may open new chapter concept next generation