Influence of Pivot Distance on the Performance of a Mechanic Heart Valve_Journal of Biomedical Engineering

Authors：

ZHANGYong , WULiangliang ,  HUANGNan

Institute of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China;

Corresponding author：

HUANGNan, Email: nhuang@263.net

Keywords：

mechanic heart valve; pivot distance; structure design

DOI：

10.7507/1001-5515.20140194

Video：

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Based on the analysis of the influence of the valve pivot distance on the performance of mechanical heart valve (MHV), such as the valve opening and closing features, flow field characteristics and the valve assembly properties, value constraints of the valve pivot distance were established, and the reasonable valve was obtained by means of the finite element method. It can be shown that the central flow characteristics of the valve could be enhanced with the increasing of the ratio of pivot distance to valve inner diameter, but the plastic deformation of the ring could be liable to occur in the MHV assembly process. It is proved that the valve of specifications can be designed in similar ratio of pivot distance to valve inner diameter according to the result of the valve performance experiment.

Citation： ZHANGYong, WULiangliang, HUANGNan. Influence of Pivot Distance on the Performance of a Mechanic Heart Valve. Journal of Biomedical Engineering, 2014, 31(5): 1037-1040. doi: 10.7507/1001-5515.20140194 Copy

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1. HSU U K, LU P J. Dynamic simulation and hemolysis evaluation of the regurgitant flow over a Tilting-Disc mechanical heart valve in pulsatile flow[J]. World J Mech , 2013, 3(3):160-168.
2. EICHINGER W B, HETTICH I, BLEIZIFFER S, et al. Intermittent regurgitation caused by incomplete leaflet closure of the Medtronic ADVANTAGE bileaflet heart valve: analysis of the underlying mechanism[J]. J Thorac Cardiovasc Surg, 2010, 140(3):611-616.
3. ROMATA C, SUSIN F M, CAMBI A, et al. Comparative classification of thrombotic formations on bileaflet mechanical heart valves by phonographic analysis[J].J Artif Organs, 2011,14(2): 100-111.
4. YAP C H, SAIKRISHNAN N, TAMILSELVAN G, et al. Experimental measurement of dynamic fluid shear stress on the aortic surface of the aortic valve leaflet[J]. Biomech Model Mechanobiol, 2012,11(1-2):171-182.
5. KING M J, CORDEN J, DAVID T, et al. Three dimensional, time dependent analysis of flow through bileaflet mechanical heart valves. comparison of experimental and numerical results[J]. J Biomech, 1996,29(5):609-618.
6. HWANG N H, REUL H, REINHARD P. In vitro evaluation of the long-body On-X bileaflet heart valve[J]. J Heart Valve Dis, 1998 ,7(5):561-568.
7. YUN B M, WU J , SIMONAL H A, et al. A numerical investigation of blood damage in the hinge area of aortic bileaflet mechanic heart valves during the leakage phase[J]. Ann Biomed Eng, 2012,40(7): 1468-1485.
8. 康振黄.心瓣流体动力学[M]. 成都:四川教育出版社, 1991:243-247.
9. 张建海,陈大鹏. 人工机械心瓣启闭过程的ALE有限元分析[J].应用数学和力学,1996,17(5): 387-396.
10. 汤京龙,王硕,刘丽, 等. 一种新型介入瓣膜脉动流性能的初步研究[J].生物医学工程学杂志,2013, 30(1):166-169.

Journal of Biomedical Engineering

Influence of Pivot Distance on the Performance of a Mechanic Heart Valve

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