Comparison of tensile properties of xenopericardium from three animal species and finite element analysis for bioprosthetic heart valve tissue

2019 ◽  
Vol 44 (3) ◽  
pp. 278-287
Author(s):  
Aisa Rassoli ◽  
Nasser Fatouraee ◽  
Robert Guidoin ◽  
Ze Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Properties ◽  
Heart Valve ◽  
Animal Species ◽  
Bioprosthetic Heart Valve ◽  
Element Analysis ◽  
Valve Tissue ◽  
Heart Valve Tissue

Influence of Different Shapes to the Dynamic Mechanical Properties of Bioprosthetic Heart Valve

2012 ◽  
Vol 500 ◽  
pp. 417-422
Author(s):  
Xu Huang ◽  
Quan Yuan ◽  
Cheng Rui Zhang ◽  
Hai Bo Ma ◽  
Xin Ye
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Heart Valve ◽  
Dynamic Mechanical Properties ◽  
Bioprosthetic Heart Valve ◽  
Element Analysis ◽  
Geometrical Features ◽  
The Finite Element Analysis ◽  
Different Shapes

The stress with different shapes of the same thickness of the leaflet under the same load is analysed and compared by us. We create the spherical and ellipsoidal curved surface in accordance with geometrical features. The experimental results of the finite element analysis show that stress distribution of the different bioprosthetic heart valve leaflets with the same thickness is different. This work is very helpful to manufacture reasonable shaped valvular leaflets and to prolong the lifetime of the bioprosthetic heart valve.

The Material Nonlinear Analysis of Bioprosthetic Heart Valve on Suture Densities

2013 ◽  
Vol 421 ◽  
pp. 23-28
Author(s):  
Xia Zhang ◽  
Quan Yuan ◽  
Jun Zhang ◽  
Xu Huang ◽  
Hua Cong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Behavior ◽  
Heart Valve ◽  
Computer Aided Design ◽  
Parametric Models ◽  
Nonlinear Material ◽  
Bioprosthetic Heart Valve ◽  
Element Analysis ◽  
The Finite Element Analysis

In order to investigate the effect of suture density on the dynamic behavior of bioprosthetic heart valve with nonlinear material and improve long term durability of bioprosthetic heart valve, we establish the ellipsoidal leaflets and paraboloidal leaflets models via computer aided design. Based on the parametric models of the heart valve, four kinds of suture density (100,70,50 and 35 suture points on the attachment edge of the bioprosthetic heart valve) are analyzed by using finite element method. The finite element analysis results are compared with each valve model. It shows that suture density has a significant effect on the dynamic behavior of the bioprosthetic heart valve, which lead to different stress peak values, different stress distributions and deformation. The finite element analysis of the BHV could provide direct and useful information for the BHV designer.

Finite Element Analysis of Bioprosthetic Heart Valve on Suture Densities

2013 ◽  
Vol 706-708 ◽  
pp. 1348-1352
Author(s):  
Xia Zhang ◽  
Quan Yuan ◽  
Xu Huang ◽  
Hai Bo Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Heart Valve ◽  
Stress Distributions ◽  
Bioprosthetic Heart Valve ◽  
Element Analysis ◽  
Different Shapes ◽  
Valve Model

In order to improve long-term durability of bioprosthetic heart valve, stress distribution of bioprosthetic heart valve leaflets with different shapes and suture density under the same load is analyzed and compared based on finite element method.The finite element analysis results are compared with each valve model, it shows that suture density has a significant effect on the dynamic behavior of the bioprosthetic heart valve, which may lead not only to different stress peak values, but also to different stress distributions and deformation. This work can be very helpful when manufacturing the bioprosthetic heart valve.

TTK Chitra tilting disc heart valve model TC2: An assessment of fatigue life and durability

2017 ◽  
Vol 231 (8) ◽  
pp. 758-765 ◽  
Author(s):  
NN Subhash ◽  
Adathala Rajeev ◽  
Sreedharan Sujesh ◽  
CV Muraleedharan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Fatigue Life ◽  
Heart Valve ◽  
Life Prediction ◽  
Heart Valves ◽  
Failure Modes ◽  
Fatigue Life Prediction ◽  
Element Analysis ◽  
Valve Model

Average age group of heart valve replacement in India and most of the Third World countries is below 30 years. Hence, the valve for such patients need to be designed to have a service life of 50 years or more which corresponds to 2000 million cycles of operation. The purpose of this study was to assess the structural performance of the TTK Chitra tilting disc heart valve model TC2 and thereby address its durability. The TC2 model tilting disc heart valves were assessed to evaluate the risks connected with potential structural failure modes. To be more specific, the studies covered the finite element analysis–based fatigue life prediction and accelerated durability testing of the tilting disc heart valves for nine different valve sizes. First, finite element analysis–based fatigue life prediction showed that all nine valve sizes were in the infinite life region. Second, accelerated durability test showed that all nine valve sizes remained functional for 400 million cycles under experimental conditions. The study ensures the continued function of TC2 model tilting disc heart valves over duration in excess of 50 years. The results imply that the TC2 model valve designs are structurally safe, reliable and durable.

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