Mechanical & Materials Engineering, Department of
Date of this Version
8-20-2019
Citation
Wang, Yanli, Dong, Pengfei, Ke, Jingyao, Shen, Xiang, Li, Zongming, Ren, Kewei, Han, Xinwei and Gu, Linxia. "Experimental evaluation of self-expandable metallic tracheobronchial stents" Nanotechnology Reviews, vol. 8, no. 1, 2019, pp. 136-142. https://doi.org/10.1515/ntrev-2019-0013
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.
Included in
Mechanics of Materials Commons, Nanoscience and Nanotechnology Commons, Other Engineering Science and Materials Commons, Other Mechanical Engineering Commons
Comments
CC-BY