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Volume 27 Issue 3
May  2014
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Journal of Southwest Jiaotong University  > 2014  >  27(3): 530-535.
ZHAO Yuanzhe, LI Qunzhan, ZHOU Fulin, ZHU Peng. Permeability Characteristics of High-Order Harmonics of Traction Network for Three-Phase Power System[J]. Journal of Southwest Jiaotong University, 2015, 28(5): 961-969. doi: 10.3969/j.issn.0258-2724.2015.05.028
Citation: WU Liangliang, ZHOU Feng, SUN Hong, WANG Jin, LIU Li, HUANG Nan. Accelerated Fatigue Test in Vitro of the New Mechanical Heart Valve[J]. Journal of Southwest Jiaotong University, 2014, 27(3): 530-535. doi: 10.3969/j.issn.0258-2724.2014.03.025
shu

Accelerated Fatigue Test in Vitro of the New Mechanical Heart Valve

doi: 10.3969/j.issn.0258-2724.2014.03.025
  • Received Date: 16 Apr 2013
  • Publish Date: 25 Jun 2014
    Abstract
  • In order to evaluate the opening and closing states and fatigue properties of a new type of polyoxymethylene heart valve, accelerated fatigue tests were performed on the polyoxymethylene heart valve and an ON-X heart valve using the heart valve prostheses fatigue tester (TH-2200). The opening and the closing positions of the leaflets were tracked using the high speed camera, and the instantaneous motion states of valves were investigated. The results show that the new heart valve had a similar opening-closing cycle at the same frequency with the ON-X heart valve in in vitro accelerated fatigue experiments, and the leaflets of both the valves would generate jitters when they opened to the limit position. After 3×108 cycles of fatigue tests, no obvious wear was found on the valve ring, the valve leaflets rotated flexibly, and the heart valve was working properly.

     

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    • References(15)
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