Mechanical characterizations of braided composite stents made of helical polyethylene terephthalate strips and NiTi wires

Qingli Zheng, Pengfei Dong, Zhiqiang Li, Xinwei Han, Changchun Zhou, Meiwen An, Linxia Gu

Research output: Contribution to journalArticle

Abstract

The novel braided composite stent (BCS), woven with both nitinol wires and polyethylene terephthalate (PET) strips, were characterized and compared with the braided nitinol stent in the same weaving pattern. Finite element models simulating the stent compression and bending were developed to quantify its radial strength and longitudinal flexibility. The interaction between the nitinol wires and the PET strips were also delineated. Results showed that the PET strips enforced more constrains on the BCS and thus enhance its radial strength especially at a larger compression load. The longitudinal flexibility of the BCS was less sensitive to the presence of the PET strips. This work suggested that the novel design of the BCS could acquire the advantage of a covered stent without compromising its mechanical performance. The fundamental understanding of the braided composite stent will facilitate a better device design.

Original languageEnglish (US)
Pages (from-to)168-174
Number of pages7
JournalNanotechnology Reviews
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2019

Fingerprint

Polyethylene Terephthalates
Stents
Polyethylene terephthalates
Wire
Composite materials
Equipment Design
Compaction

Keywords

  • Braided composite stent
  • finite element method
  • flexibility
  • radial strength
  • wire interaction

ASJC Scopus subject areas

  • Biotechnology
  • Medicine (miscellaneous)
  • Materials Science (miscellaneous)
  • Energy Engineering and Power Technology
  • Engineering (miscellaneous)
  • Process Chemistry and Technology

Cite this

Mechanical characterizations of braided composite stents made of helical polyethylene terephthalate strips and NiTi wires. / Zheng, Qingli; Dong, Pengfei; Li, Zhiqiang; Han, Xinwei; Zhou, Changchun; An, Meiwen; Gu, Linxia.

In: Nanotechnology Reviews, Vol. 8, No. 1, 01.01.2019, p. 168-174.

Research output: Contribution to journalArticle

Zheng, Qingli ; Dong, Pengfei ; Li, Zhiqiang ; Han, Xinwei ; Zhou, Changchun ; An, Meiwen ; Gu, Linxia. / Mechanical characterizations of braided composite stents made of helical polyethylene terephthalate strips and NiTi wires. In: Nanotechnology Reviews. 2019 ; Vol. 8, No. 1. pp. 168-174.
@article{14cf15381338415bb080d20fc843b13d,
title = "Mechanical characterizations of braided composite stents made of helical polyethylene terephthalate strips and NiTi wires",
abstract = "The novel braided composite stent (BCS), woven with both nitinol wires and polyethylene terephthalate (PET) strips, were characterized and compared with the braided nitinol stent in the same weaving pattern. Finite element models simulating the stent compression and bending were developed to quantify its radial strength and longitudinal flexibility. The interaction between the nitinol wires and the PET strips were also delineated. Results showed that the PET strips enforced more constrains on the BCS and thus enhance its radial strength especially at a larger compression load. The longitudinal flexibility of the BCS was less sensitive to the presence of the PET strips. This work suggested that the novel design of the BCS could acquire the advantage of a covered stent without compromising its mechanical performance. The fundamental understanding of the braided composite stent will facilitate a better device design.",
keywords = "Braided composite stent, finite element method, flexibility, radial strength, wire interaction",
author = "Qingli Zheng and Pengfei Dong and Zhiqiang Li and Xinwei Han and Changchun Zhou and Meiwen An and Linxia Gu",
year = "2019",
month = "1",
day = "1",
doi = "10.1515/ntrev-2019-0016",
language = "English (US)",
volume = "8",
pages = "168--174",
journal = "Nanotechnology Reviews",
issn = "2191-9089",
publisher = "Walter de Gruyter GmbH",
number = "1",

}

TY - JOUR

T1 - Mechanical characterizations of braided composite stents made of helical polyethylene terephthalate strips and NiTi wires

AU - Zheng, Qingli

AU - Dong, Pengfei

AU - Li, Zhiqiang

AU - Han, Xinwei

AU - Zhou, Changchun

AU - An, Meiwen

AU - Gu, Linxia

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The novel braided composite stent (BCS), woven with both nitinol wires and polyethylene terephthalate (PET) strips, were characterized and compared with the braided nitinol stent in the same weaving pattern. Finite element models simulating the stent compression and bending were developed to quantify its radial strength and longitudinal flexibility. The interaction between the nitinol wires and the PET strips were also delineated. Results showed that the PET strips enforced more constrains on the BCS and thus enhance its radial strength especially at a larger compression load. The longitudinal flexibility of the BCS was less sensitive to the presence of the PET strips. This work suggested that the novel design of the BCS could acquire the advantage of a covered stent without compromising its mechanical performance. The fundamental understanding of the braided composite stent will facilitate a better device design.

AB - The novel braided composite stent (BCS), woven with both nitinol wires and polyethylene terephthalate (PET) strips, were characterized and compared with the braided nitinol stent in the same weaving pattern. Finite element models simulating the stent compression and bending were developed to quantify its radial strength and longitudinal flexibility. The interaction between the nitinol wires and the PET strips were also delineated. Results showed that the PET strips enforced more constrains on the BCS and thus enhance its radial strength especially at a larger compression load. The longitudinal flexibility of the BCS was less sensitive to the presence of the PET strips. This work suggested that the novel design of the BCS could acquire the advantage of a covered stent without compromising its mechanical performance. The fundamental understanding of the braided composite stent will facilitate a better device design.

KW - Braided composite stent

KW - finite element method

KW - flexibility

KW - radial strength

KW - wire interaction

UR - http://www.scopus.com/inward/record.url?scp=85075104630&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85075104630&partnerID=8YFLogxK

U2 - 10.1515/ntrev-2019-0016

DO - 10.1515/ntrev-2019-0016

M3 - Article

AN - SCOPUS:85075104630

VL - 8

SP - 168

EP - 174

JO - Nanotechnology Reviews

JF - Nanotechnology Reviews

SN - 2191-9089

IS - 1

ER -