Experimental evaluation of self-expandable metallic tracheobronchial stents

Yanli Wang, Pengfei Dong, Jingyao Ke, Xiang Shen, Zongming Li, Kewei Ren, Xinwei Han, Linxia Gu

Research output: Contribution to journalArticle

Abstract

The self-expandable metallic stents have been widely used in tracheobronchial obstruction or fistulation, including the J-shaped and Y-shaped stents, named after the shape of the branch-stem junction of the stent. However, there is scarce data on the mechanical performance of these tracheobronchial stents, which is essential for optimal stent implantation. In this work, eight self-expandable metallic tracheobronchial stents in three types (i.e., straight, J-shaped, and Y-shaped), with or without cover, were characterized. The compression resistance of the stems was investigated through both compression and indentation tests. The bending resistance of the branches in the J-shaped and Y-shaped stents was assessed through the bending test. Our results demonstrated that the covered stents exhibited a significantly higher compression resistance and bending resistance than the uncovered ones. The branches had a minimal impact on the compression resistance of the stem. The branch of the J-shaped stent showed a significantly lower bending resistance than the Y shaped one. This work provides a testing framework for the J-shaped and Y-shaped stents,which could shed some light on the optimal design of stent with branches.

Original languageEnglish (US)
Pages (from-to)136-142
Number of pages7
JournalNanotechnology Reviews
Volume8
Issue number1
DOIs
StatePublished - Jan 1 2019

Fingerprint

Stents
Self Expandable Metallic Stents
Bending tests
Indentation
Compaction

Keywords

  • J-shaped
  • Y-shaped
  • bending resistance
  • covered stent
  • self-expandable metallic tracheobronchial stent

ASJC Scopus subject areas

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

Cite this

Experimental evaluation of self-expandable metallic tracheobronchial stents. / Wang, Yanli; Dong, Pengfei; Ke, Jingyao; Shen, Xiang; Li, Zongming; Ren, Kewei; Han, Xinwei; Gu, Linxia.

In: Nanotechnology Reviews, Vol. 8, No. 1, 01.01.2019, p. 136-142.

Research output: Contribution to journalArticle

Wang, Y, Dong, P, Ke, J, Shen, X, Li, Z, Ren, K, Han, X & Gu, L 2019, 'Experimental evaluation of self-expandable metallic tracheobronchial stents', Nanotechnology Reviews, vol. 8, no. 1, pp. 136-142. https://doi.org/10.1515/ntrev-2019-0013
Wang, Yanli ; Dong, Pengfei ; Ke, Jingyao ; Shen, Xiang ; Li, Zongming ; Ren, Kewei ; Han, Xinwei ; Gu, Linxia. / Experimental evaluation of self-expandable metallic tracheobronchial stents. In: Nanotechnology Reviews. 2019 ; Vol. 8, No. 1. pp. 136-142.
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