Compliance properties of collagen-coated polyethylene terephthalate vascular prostheses

Khoffi, Foued; Mathieu, Daniel; Dieval, Florence; Chakfé, Nabil; Durand, Bernard

doi:10.5301/jabfm.5000189

Compliance properties of collagen-coated polyethylene terephthalate vascular prostheses

Abstract

Background

Compliance mismatch between native artery and a prosthetic graft used for infrainguinal bypass is said to be a factor for graft failure. The aim of this study was to develop a technique for measuring the compliance of collagen-coated polyethylene terephthalate (PET) vascular prostheses and to analyze the influence of several key properties on the elastic behavior of the grafts.

Methods

Compliance testing was performed on 3 prostheses with and without internal compliant membrane (ICM). The principle of this test was to study the dimensional changes of prostheses submitted to internal pressure from 30 to 240 mm Hg at intervals of predetermined values.

Results

We demonstrated that the ICM created links with the inner surface of the crimps and considerably modified the graft behavior when submitted to internal pressure. The results showed that compliance properties were dependent on the wall thickness and the crimping geometry of textile vascular prostheses. Mechanical analysis predicts the circumferential tensile behavior of these arterial grafts and validates tests for measuring compliance.

J Appl Biomater Funct Mater 2014; 12(3): 163 - 171

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/jabfm.5000189

Authors

Foued Khoffi, Daniel Mathieu, Florence Dieval, Nabil Chakfé, Bernard Durand

Article History

• Accepted on 22/04/2013
• Available online on 18/04/2014
• Published online on 30/12/2014

Disclosures

Financial support: The authors acknowledge financial support from the Alfred Valentine Wallach Foundation (France) and the Groupe Européen de Recherche sur les Prothèses Appliquées à la Chirurgie Vasculaire. This work has also been supported by Perouse Medical.

Conflict of interest statement: There were no conflicts of interest.

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Authors

Khoffi, Foued [PubMed] [Google Scholar] 1, 2, * Corresponding Author ([email protected])
Mathieu, Daniel [PubMed] [Google Scholar] 1, 2
Dieval, Florence [PubMed] [Google Scholar] 1, 2
Chakfé, Nabil [PubMed] [Google Scholar] 2, 3
Durand, Bernard [PubMed] [Google Scholar] 1, 2

Affiliations

1 Laboratory of Textile Physics and Mechanics, University of Haute Alsace, Mulhouse - France
2 European Research Group on Grafts Used in Vascular Surgery (ERGGVS), Faculty of Medicine, Strasbourg - France
3 Departement of Vascular Surgery, University Hospitals of Strasbourg, Strasbourg - France

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