Insights into the formation and characteristics of leakage flow structures through bileaflet mechanical heart valve prostheses

Jeffrey T. Ellis, Timothy M. Healy, Arnold A. Fontaine, Rahul Saxena, Ajit P. Yoganathan

Research output: Contribution to conferencePaperpeer-review

Abstract

The retrograde flow fields surrounding one hinge of Saint Jude Medical (SJM) and Medtronic Parallel (MP) bileaflet mechanical heart valve designs are studied. This study allows a detailed characterization of the washout capacity, squeeze flow, and leakage jets of each valve. The closing flow field of the SJM is found to be dominated by secondary flows, suggesting a scouring of nearby leaflet surfaces. In contrast, the closing flow field of the MP is more static, particularly around the hinge recess of this valve design. The comparative lack of reverse flow around the MP hinge recess may indicate a potential for entrapment or deposition of blood elements.

Original languageEnglish (US)
Pages279-280
Number of pages2
StatePublished - Dec 1 1996
EventProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition - Atlanta, GA, USA
Duration: Nov 17 1996Nov 22 1996

Other

OtherProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition
CityAtlanta, GA, USA
Period11/17/9611/22/96

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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