A simple fluid-structure coupling algorithm for the study of the anastomotic mechanics of vascular grafts

Schiller, N. K., Franz, T., Weerasekara, N. S., Zilla, P. and Reddy, B. D. (2010) A simple fluid-structure coupling algorithm for the study of the anastomotic mechanics of vascular grafts. Computer Methods in Biomechanics and Biomedical Engineering, 13 6: 773-781.


Author Schiller, N. K.
Franz, T.
Weerasekara, N. S.
Zilla, P.
Reddy, B. D.
Title A simple fluid-structure coupling algorithm for the study of the anastomotic mechanics of vascular grafts
Journal name Computer Methods in Biomechanics and Biomedical Engineering   Check publisher's open access policy
ISSN 1476-8259
1025-5842
Publication date 2010-12-09
Year available 2010
Sub-type Article (original research)
DOI 10.1080/10255841003606124
Volume 13
Issue 6
Start page 773
End page 781
Total pages 9
Place of publication London, England
Publisher Gordon and Breach
Collection year 2011
Language eng
Abstract Vascular anastomoses constitute a main factor in poor graft performance due to mismatches in distensibility between the host artery and the graft. This work aims at computational fluid-structure investigations of proximal and distal anastomoses of vein grafts and synthetic grafts. Finite element and finite volume models were developed and coupled with a user-defined algorithm. Emphasis was placed on the simplicity of the coupling algorithm. An artery and vein graft showed a larger dilation mismatch than an artery and synthetic graft. The vein graft distended nearly twice as much as the artery while the synthetic graft displayed only approximately half the arterial dilation. For the vein graft, luminal mismatching was aggravated by development of an anastomotic pseudo-stenosis. While this study focused on end-to-end anastomoses as a vehicle for developing the coupling algorithm, it may serve as useful point of departure for further investigations such as other anastomotic configurations, refined modelling of sutures and fully transient behaviour.
Keyword Anastomosis
Vascular graft
Artery
Finite element methods
Blood flows
Computational fluid dynamics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Non HERDC
 
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Created: Fri, 10 Dec 2010, 11:49:20 EST by Dr Nirmal Weerasekara on behalf of Julius Kruttschnitt Mineral Research Centre