ArticleAnnals of biomedical engineering2019
Reduction of Pressure Gradient and Turbulence Using Vortex Generators in Prosthetic Heart Valves.
Article in Annals of biomedical engineering, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Comparison of invasive and non-invasive gradients before and after TAVI and their implications on clinical outcomes.Cardiovascular intervention and therapeutics · 2025Article
- Taking inspiration from birds to improve flow in prosthetic heart valves: an European Research Council granted project.European heart journal · 2024Article
- Biomechanical Scaffolds of Decellularized Heart Valves Modified by Electrospun Polylactic Acid.Applied biochemistry and biotechnology · 2024Article
- Rethinking mechanical heart valves in the aortic position: new paradigms in design and testing.Frontiers in cardiovascular medicine · 2024Review
- Article
- Comparison of Transvalvular Aortic Mean Gradients Obtained by Intraprocedural Echocardiography and Invasive Measurement in Balloon and Self-Expanding Transcatheter Valves.Journal of the American Heart Association · 2021Article
- Atrial and ventricular flows across a transcatheter mitral valve.Interactive cardiovascular and thoracic surgery · 2021Article
- The hemodynamics of transcatheter aortic valves in transcatheter aortic valves.The Journal of thoracic and cardiovascular surgery · 2021Article
- Impact of superhydrophobicity on the fluid dynamics of a bileaflet mechanical heart valve.Journal of the mechanical behavior of biomedical materials · 2020Article
- Sinus Hemodynamics After Transcatheter Aortic Valve in Transcatheter Aortic Valve.The Annals of thoracic surgery · 2020Article
- Fetal Transcatheter Trileaflet Heart Valve Hemodynamics: Implications of Scaling on Valve Mechanics and Turbulence.Annals of biomedical engineering · 2020Article
- In-vitro characterization of self-expandable textile transcatheter aortic valves.Journal of the mechanical behavior of biomedical materials · 2020Article
- A turbulence in vitro assessment of On-X and St Jude Medical prostheses.The Journal of thoracic and cardiovascular surgery · 2020Article
- Spatiotemporal Complexity of the Aortic Sinus Vortex as a Function of Leaflet Calcification.Annals of biomedical engineering · 2019Article
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Authors and funding
2 authors.
Funding
Abstract
Blood damage and platelet activation are inherent problems with present day bi-leaflet mechanical heart valve designs. Passive flow control through different arrangements of vortex generators (VG) as means of improving pressure gradients and reducing turbulence are investigated. Rectangular VG arrays were mounted on the downstream surfaces of a 23 mm 3D printed mechanical valve. The effect of VGs on the resulting flow structures were assessed under pulsatile physiological flow conditions where high resolution particle image velocimetry measurement was performed. The co-rotating VGs showed lower Reynolds shear stresses and improved pressure gradients (PG) compared with the counter-rotating ones and the no-VG control one (that showed higher turbulence). RSS was found 38.13 ± 0.89, 12.95 ± 0.32, 15.75 ± 0.71, 24.54 ± 0.84 and 16.33 ± 0.58 Pa for the control, co-rotating VGs, 8 counter-rotating VGs, 4 far-spaced VGs and 4 closely-spaced VGs, respectively. PG of 10.45 ± 0.94 mmHg was obtained with co-rotating VGs and the difference was significant compared with the other configurations (control 14.88 ± 0.4 mmHg; 8 counter-rotating VGs 13.76 ± 0.51 mmHg; 4 far-spaced VGs 13.84 ± 0.09 mmHg; and 4 closely-spaced VGs 15.37 ± 0.16 mmHg). Co-rotating VGs for this application induce a more delayed flow separation and a more homogenized and streamlined transition of flow compared with the counter-rotating VGs. Passive flow control techniques deployed on BHMVs is potentially beneficial as significant control of flow at small length scales without inducing large-scale design modifications of the valve.
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