Poly(L-lactic acid) monofilaments for biodegradable braided self-expanding stent

被引：21
|
作者：
Zhao, Gutian [1 ]
Li, Xin [1 ]
Tian, Yuan [1 ]
Wu, Gensheng [2 ]
Zhang, Yi [3 ]
Jiang, Wei [4 ]
Yang, Juekuan [1 ]
Ni, Zhonghua [1 ]
机构：
[1] Southeast Univ, Sch Mech Engn, Jiangsu Key Lab Design & Manufacture Micronano Bi, Nanjing 211189, Peoples R China
[2] Nanjing Forestry Univ, Sch Mech & Elect Engn, Nanjing 210037, Peoples R China
[3] Southeast Univ, Zhongda Hosp, Ctr Intervent Radiol & Vasc Surg, Med Sch,Dept Radiol, Nanjing 210044, Peoples R China
[4] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210023, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2021年 / 56卷 / 21期
基金：
中国国家自然科学基金;
关键词：
35;
D O I：
10.1007/s10853-021-06021-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Although poly(l-lactic acid) (PLLA) is the widely used material for bioresorbable stents, publications on PLLA braided stents are still lacking. In this paper, the PLLA monofilaments were prepared via melt spinning and solid-state drawing. The total draw ratios are from 2.8 to 30.8. The properties of the monofilaments, such as crystallinity, elastic modulus, elongation at break, were characterized. Due to the relatively good mechanical properties, PLLA monofilaments with draw ratio of 16.8 were used to braid carotid stents. The curve of the radial force of the braided PLLA stent almost overlaps with that of a Carotid Wallstent with similar parameters, which indicates that the braided PLLA stent can provide adequate support to the carotid lesion.
引用
收藏
页码：12383 / 12393
页数：11
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