Bibliographic Details
| Title: |
Influence of anisotropy on the mechanical behaviour of bioprosthetic heart valves. |
| Authors: |
Burriesci, G., Howard, I. C., Patterson, E. A. |
| Source: |
Journal of Medical Engineering & Technology. Nov/Dec99, Vol. 23 Issue 6, p203-215. 13p. |
| Subjects: |
Mitral valve, Anisotropy |
| Abstract: |
Chemically modified pericardium is commonly used in the fabrication of bioprosthetic heart valves. This material exhibits non-linear elastic behaviour and, as for most other biological soft tissues, it is orthotropicin its extensibility. The influence of the natural orthotropy of pericardium on the mechanical behaviour of pericardial heart valves during the whole cardiac cycle has been studied, using the finiteelement method. A model of the leaflet of a bicuspid valve has been created, defining the material of the tissue as orthotropic non-linear elastic. Two preferential orthogonal orientations of the tissue have been analysed (axial and circumferential). The results show that even a small amount of orthotropy (an orthotropyindex of 1.5 has been used) can significantly affect the mechanical behaviour of the valve, and that an appropriate orientation of the fibres can contribute to optimizing the stress distribution in the leaflets. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Medical Engineering & Technology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| Database: |
Engineering Source |
