The Radial Direction Mechanical Property of Small-diameter Vascular Graft Reinforced by Polyester/Spandex Tubular Fabric

摘要：

The goal of this study is to evaluate the mechanical property of small-diameter polyurethane blood vessel reinforced by weft-knitted tubular fabric of polyester/spandex, and determine the influence of tubular fabric on mechanical property of artificial blood vessel. The polyester/spandex tubular fabric with different blend ratios was prepared by proposed-built machine and used to reinforce small-diameter vascular graft. Artificial blood vessel was fabricated by coagulation technique at room temperature. The morphology of small-diameter vascular graft was observed by scanning electron microscope, and micropores were observed on acrosssection and inner surface. The radial direction mechanical property and compliance of small-diameter polyurethane vascular graft reinforced by polyester/spandex tubular fabric was characterized. The results indicated that the wall thickness and polyester/spandex blend ratios have significant influence on the mechanical property and compliance of vascular graft. With the decline of wall thickness, the radial compliance and stress at breaking increased. The compliance and strain at breaking increased with the spandex content increase in the tubular fabric. So we can get small-diameter artificial blood vessel with different radial mechanical property and compliance by changing the wall thickness and polyester/spandex blend ratio to meet the clinical application.

关键词： vascular graft mechanical property compliance radial direction polyurethane

作者: YANG Hong-jun ZHU Guo-cheng ZHANG Zhen WANG Zhen-zhen XU Wei-lin

作者单位: College of Textiles, Donghua University, Shanghai 201620, China Textile Research Center, Wuhan University of Science & Engineering, Wuhan 430073, China

会议类型: 国际会议

会议名称: 2010 International Forum on Biomedical Textile Materials(2010国际纺织生物医用论坛)

会议地点: 上海

会议语种:英文

页码: 430-435

在线出版日期: 2010-05-28（万方平台首次上网日期，不代表论文的发表时间）