Development of a test bank for fluid dynamic analysis of two prosthetic heart valves using air as working fluid

Luz M. Rivera, Ana I. Crispín, Nelson Escobar, Lina M. Hoyos, John Bustamante

Resultado de la investigación: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

This work presents the fluid dynamic analysis of the mechanical prosthetic heart valves: Björk Shiley and Sorin Bicarbon™. Analysis of prosthetic valves is currently done with viscous fluids that emulate the behavior of blood; however the developed test bank, wind tunnel, uses air as the working fluid. This working fluid differs from those currently being used due to its low density and viscosity properties, which provides greater sensitivity to small changes in geometry and valve design variations. These features permit to identify relevant changes to the patient's hemodynamic system based on the effect of the implanted valve. Tests were performed by measuring the fluid-dynamics of both valves; the obtained results show accuracy with the valves' performance under clinical conditions. The offset design of the Björk Shiley tilting disk gives the valve the ability to generate less blood trauma and increase laminar flow and the Sorin Bicarbon™ bileaflet has a larger orifice for better hemodynamic performance. Furthermore, the transversal pressure gradients and local effects such as turbulence and vortexes were also analyzed; and the obtained results are accurate according to the functionality, geometrical and structural characteristics of both valves at their real environment.

Idioma originalInglés
Título de la publicación alojadaBiomedical and Biotechnology Engineering
EditorialAmerican Society of Mechanical Engineers (ASME)
ISBN (versión digital)9780791846469
DOI
EstadoPublicada - 2014
Publicado de forma externa
EventoASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014 - Montreal, Canadá
Duración: 14 nov. 201420 nov. 2014

Serie de la publicación

NombreASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volumen3

Conferencia

ConferenciaASME 2014 International Mechanical Engineering Congress and Exposition, IMECE 2014
País/TerritorioCanadá
CiudadMontreal
Período14/11/1420/11/14

Nota bibliográfica

Publisher Copyright:
Copyright © 2014 by ASME.

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