Effects of yarn types and fabric types on the compliance and bursting strength of vascular grafts

Ching-Wen Lou; Po-Ching Lu; Jin-Jia Hu; Jia-Horng Lin

doi:10.1016/j.jmbbm.2016.03.002

Effects of yarn types and fabric types on the compliance and bursting strength of vascular grafts

J Mech Behav Biomed Mater. 2016 Jun:59:474-483. doi: 10.1016/j.jmbbm.2016.03.002. Epub 2016 Mar 9.

Authors

Ching-Wen Lou¹, Po-Ching Lu², Jin-Jia Hu³, Jia-Horng Lin⁴

Affiliations

¹ Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung City 40601, Taiwan, ROC.
² Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan, ROC.
³ Department of Biomedical Engineering, National Cheng Kung University, Tainan City 70101, Taiwan, ROC.
⁴ Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan, ROC; School of Chinese Medicine, China Medical University, Taichung City 40402, Taiwan, ROC; Department of Fashion Design, Asia University, Taichung City 41354, Taiwan, ROC. Electronic address: jhlin@fcu.edu.tw.

PMID: 26995157
DOI: 10.1016/j.jmbbm.2016.03.002

Abstract

The use of vascular grafts to replace damaged native vessels plays a significant role in clinical cardiovascular disease treatment. Comparable mechanical properties of small-diameter vascular grafts to that of native vessels are crucial and challenging. This study examines how different fabrics and yarns influence the mechanical properties of vascular grafts and evaluate the effectiveness of vascular grafts being used as native vessels. Five wrapped yarns are made into braids, warp knits, and weft knits. These knits are incorporated with PVA via freeze-thawing in order to form vascular grafts that are evaluated with circular properties and bursting strength tests. The test results indicate that the number of freeze-thawing cycles is related to the compliance and bursting strength of vascular grafts. In addition, the combination of spandex fibers improves the compliance of both the fabrics and vascular grafts.

Keywords: Knit; Polyester (PET); Polyvinyl Alcohol (PVA); Vascular grafts.

MeSH terms

Blood Vessel Prosthesis*
Humans
Materials Testing
Polyurethanes
Prosthesis Design*
Prosthesis Failure*
Textiles*

Substances

Polyurethanes