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- Title
PROPOSED OVAL ST. JUDE MEDICAL VALVE: EFFECT OF HEART RATE.
- Authors
JAHANDARDOOST, MEHDI; OHLMANN, LUKE; FRADET, GUY; MOHAMMADI, HADI
- Abstract
In this study, the hemodynamic performance of the conventional St. Jude Medical (SJM) valve and our proposed design known as the oval SJM valve are studied and compared. These studies are based on a wide range of physiological heart rates, i.e., 70–130 bpm, in the opening phase. We designed and developed a precise computational platform to assess the hemodynamics of bileaflet mechanical heart valves for laminar and turbulent regimes. Also, as one of the fundamental changes applied to the conventional SJM vales, the housing is considered oval similar to oval shape of annulus. Results clearly indicate hemodynamic improvements in the proposed design over the SJM valve. The improvements are characterized by lower shear stress and wall shear stress distributions around the valve and leaflets, and lower valve pressure drop compared to that of the conventional SJM model. The proposed design shows potential and merits additional development.
- Subjects
ST. Jude Medical Inc.; JUDAS Iscariot; HEART valves; HEART beat; HEMODYNAMICS; SHEARING force; MECHANICAL hearts; SHEAR walls; ERYTHROCYTE deformability
- Publication
Journal of Mechanics in Medicine & Biology, 2018, Vol 18, Issue 2, pN.PAG
- ISSN
0219-5194
- Publication type
Article
- DOI
10.1142/S0219519418500148