Pulsatile blood flows through a bileaflet mechanical heart valve with different approach methods of numerical analysis; pulsatile flows with fixed leaflets and interacted with moving leaflets

2003 ◽  
Vol 17 (7) ◽  
pp. 1073-1082 ◽  
Author(s):  
Choeng Ryul Choi ◽  
Chang Nyung Kim ◽  
Young Joo Kwon ◽  
Jae Won Lee
Keyword(s):  
Numerical Analysis ◽  
Heart Valve ◽  
Mechanical Heart Valve ◽  
Blood Flows ◽  
Bileaflet Mechanical Heart Valve ◽  
Pulsatile Flows

Thrombogenic Performance of a St. Jude Bileaflet Mechanical Heart Valve in a Sheep Model

ASAIO Journal ◽  
2006 ◽  
Vol 52 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Wei Yin ◽  
Irvin B. Krukenkamp ◽  
Adam E. Saltman ◽  
Glenn Gaudette ◽  
Krishnamurthy Suresh ◽  
...  
Keyword(s):  
Heart Valve ◽  
Mechanical Heart Valve ◽  
Sheep Model ◽  
Bileaflet Mechanical Heart Valve

Static and Dynamic Stresses during Valve Closure of a Bileaflet Mechanical Heart Valve Prosthesis

1991 ◽  
Vol 14 (12) ◽  
pp. 781-788 ◽  
Author(s):  
T.H. Chiang ◽  
H. Lam ◽  
R. Quijano ◽  
R. Donham ◽  
P. Gilliam ◽  
...  
Keyword(s):  
Heart Valve ◽  
Mechanical Heart Valve ◽  
Heart Valve Prosthesis ◽  
Valve Prosthesis ◽  
Valve Closure ◽  
Element Analysis ◽  
Dynamic Stresses ◽  
Magnitude Distribution ◽  
Bileaflet Mechanical Heart Valve ◽  
The Impact

The effect of contact geometry and component compliance on the magnitude, distribution, and state of various types of stresses on a bileaflet mechanical heart valve prosthesis during valve closure was analyzed using an Edwards-Duromedics™ mitral valve as example. Static and dynamic stresses developing on both the leaflet and pivot ball during valve closure were modeled using finite element analysis (FEA). Uniform contact between the leaflet and housing as well as between the pivot ball and pivot slot can significantly reduce both static and dynamic stresses around the contact area. The level of the dynamic flexural stresses can be an order of magnitude higher than that of the static stresses. When both the radial and axial compliance of the housing are taken into consideration, peak dynamic stress was more than 40% less than that generated through the impact between a moving leaflet and a non-compliant rigid housing.

scholarly journals Impact of superhydrophobicity on the fluid dynamics of a bileaflet mechanical heart valve

2020 ◽  
Vol 110 ◽  
pp. 103895
Author(s):  
Hoda Hatoum ◽  
Sravanthi Vallabhuneni ◽  
Arun Kumar Kota ◽  
David L. Bark ◽  
Ketul C. Popat ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Heart Valve ◽  
Mechanical Heart Valve ◽  
Bileaflet Mechanical Heart Valve
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