The Nonlinear Analysis of the Biopresthetic Heart Valve

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Abstract:

In order to improve long-term durability of bioprosthetic heart valve, we take the spherical,paraboloidal,cylindrical and the ellipsoidal leaflets for nonlinear analysis and the material is orthotropic.The experimental results of the finite element nonlinear analysis show that when the leaflets with the material orthotropic is closed,the deformation of the symmetric edge is larger than else. The stress distribution of the cylindrical, spherical, paraboloidal and ellipsoidal valve leaflets is quite different. The ellipsoidal valve leaflets have more advantages than the cylindrical, spherical, paraboloidal valve leaflets.This work is very helpful to manufacture reasonable shaped valvular leaflets and to prolong the lifetime of the bioprosthetic heart valve.

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3438-3442

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July 2011

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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[1] Zhao Shixiong, Luo Zhengxiang. The statue of arificial heart valve[J], Journal of Biomechnical Engineering 1991, (8): 259-262.

Google Scholar

[2] I. Vesely, The evolution of bioprosthetic heart valve design and its impact on durability, Cardiovascular Pathology, vol. 12, pp.277-286, (2003).

DOI: 10.1016/s1054-8807(03)00075-9

Google Scholar

[3] J. Li, X. Y. Luo, Z. B. Kuang. A Nonlinear Anisotropic Model for Porcine Aortic Heart Valves[J]. Journal of Biomechanics, 2001(34): 1279-1289.

DOI: 10.1016/s0021-9290(01)00092-6

Google Scholar

[4] Alan D. Freed, Daniel R. Einstein, Ivan Vesely. Invariant Formulation for Dispersed Transverse Isotropy in Aortic Heart Valves[J]. Biomechan Model Mechanobiol, 2005(4): 100-117.

DOI: 10.1007/s10237-005-0069-8

Google Scholar

[5] W. David Merryman, George C. Engelmayr Jr., Jun Liao, Michael S. Sacks. Defining Biomechanical Endpoints for Tissue Engineered Heart Valve Leaflets from Native Leaflet Properties[J]. Progress in Pediatric Cardiology, 2006(21): 153-160.

DOI: 10.1016/j.ppedcard.2005.11.001

Google Scholar

[6] D. Mavrilas, Y. Missirlis. An Approach to the Optimization of Preparation of Bioprosthetic Heart Valves[J]. Biomech, 1991, 24: 331-339.

DOI: 10.1016/0021-9290(91)90351-m

Google Scholar

[7] X. Y. Luo, W.G. Li, J. Li. Geometrical Stress-Reducing Factors in Anisotropic Porcine Heart Valves[J]. Journal of Biomechanical Engineering, 2003, 125: 735-743.

DOI: 10.1115/1.1614821

Google Scholar