Visualization of the hinge flow in a 5:1 scaled model of the medtronic parallel bileaflet heart valve prosthesis |
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| Authors: | T. M. Healy A. A. Fontaine J. T. Ellis S. P. Walton A. P. Yoganathan |
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| Affiliation: | (1) Cardiovascular Fluid Mechanics Laboratory School of Chemical Engineering Petit Institute for Bioengineering and Biosciences Georgia Institute of Technology Atlanta, Georgia 30332, USA, GE;(2) Cardiovascular Fluid Mechanics Laboratory School of Mechanical Engineering Petit Institute for Bioengineering and Biosciences Georgia Institute of Technology Atlanta, Georgia 30332, USA, GE |
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| Abstract: | In this work, a flow visualization experiment was performed to elucidate features of the retrograde hinge flow through a 5 : 1 scaled model of the Medtronic Parallel bileaflet heart valve. It was hypothesized that this model would provide detailed flow information facilitating identification of flow structures associated with thrombus formation in this valve. The experimental protocol was designed to ensure fluid dynamic similarity between the model and prototype heart valves. Flow was visualized using dye injection. The detailed flow structures observed showed the hinge’s inflow channel was the most suspect region for thrombus formation. Here a complex helical structure was observed. Received: 27 October 1997/Accepted: 1 May 1998 |
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