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On the dynamic behaviour of chorded mitral valves

In: Computational Mechanics

Author

Listed:
  • X. Y. Luo

    (University of Glasgow, Department of Mathematics)

  • M. Yin

    (Xi’an University, Department of Engineering Mechanics)

  • P. Watton

    (Oxford University, Department of Engineering Science)

  • J. Wang

    (Xi’an University, Department of Engineering Mechanics)

Abstract

An immersed boundary model is employed to investigate the dynamic behaviour of a novel chorded mitral prosthesis, which is in the early stages of its development, under physiological flow conditions. In vivo magnetic resonance images of the left ventricle is analysed to determine the relative motion of the mitral annulus and the papillary muscle regions of the ventricle. The dynamic boundary conditions are incorporated into immersed boundary simulations to test the valve in a more realistic dynamic geometric environment. The immersed boundary model has successfully identified the effect of the dynamic boundary conditions on the mechanical behaviour of the valve and revealed the strengths and weaknesses of the current mitral design. The mechanical performance of the prosthesis is compared with recent studies of native porcine valves; differences in mechanical behaviour are observed. Potential improvements for the design of the prosthesis as well as the numerical methods are discussed.

Suggested Citation

  • X. Y. Luo & M. Yin & P. Watton & J. Wang, 2007. "On the dynamic behaviour of chorded mitral valves," Springer Books, in: Computational Mechanics, pages 311-311, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-75999-7_111
    DOI: 10.1007/978-3-540-75999-7_111
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