NDLI: The effects of the tilt angle of a bileaflet mechanical heart valve on blood flow and leaflet motion

Content Provider	Springer Nature Link
Author	Kim, Chang Nyung Hong, Taehyup
Copyright Year	2012
Abstract	Diseased heart valves can be replaced with bileaflet mechanical heart valves (BMHVs), which may be affected by complications such as hemolysis, platelet activation and device failure. These complications are closely related to the characteristics of blood flow through mechanical valves and leaflet dynamics, and can become worse with tilted implantation of BMHVs. This study simulated the interactions of blood flow and leaflet motion for BMHVs implanted at different tilt angles. A fluid-structure interaction (FSI) method was employed to solve the problems of blood flow and leaflet motion interactively. A validation of the present numerical methods was performed against data produced in a previous work, indicating that the method presented in this study is reliable. Our results reveal detailed blood flow and leaflet motion in an aorta caused by the systole and diastole of the ventricle. As the tilt angle increased, the degree of asymmetry of blood flow and the time delay in the motions of the two different leaflets also increased, which may cause worsening of complications.
Starting Page	819
Ending Page	825
Page Count	7
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	26
Issue Number	3
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2012-03-29
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Tilt Mechanical heart valve Blood flow Leaflet motions Regurgitation Industrial and Production Engineering Mechanical Engineering Vibration, Dynamical Systems, Control
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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