The trachea is a tube-like structure that allows air passage through it. When the tracheal tissues are subjected to tumors, congenital diseases, and trauma, this results in tracheomalacia or tracheal stenosis. While studying for reliable and clinically safe methods for treatment, tracheal stents have proven to be an effective alternative. Tracheal prostheses, also known as tracheal stents, are used for stabilizing, assisting, and reconstructing an injured or collapsed trachea. The design of the tracheal stent plays a very significant role in its performance after deployment. This work proposes an auxetic design for PLA tracheal stent, designed through Fusion360. This research also showcases differences in performance between traditionally designed stents and auxetic-designed stents. The computational studies are performed on ANSYS, and the data are validated based on deviations in the performance of existing designs. The proposed auxetic stent design was found to have an increase of 11.45% in diameter.

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Finite Element Analysis of Auxetic PLA Tracheal Stent

  • Vedangini Chaudhary,
  • Arunima Ghosh,
  • Ishika Mathur,
  • Ishita Shukla,
  • Pooja Bhati

摘要

The trachea is a tube-like structure that allows air passage through it. When the tracheal tissues are subjected to tumors, congenital diseases, and trauma, this results in tracheomalacia or tracheal stenosis. While studying for reliable and clinically safe methods for treatment, tracheal stents have proven to be an effective alternative. Tracheal prostheses, also known as tracheal stents, are used for stabilizing, assisting, and reconstructing an injured or collapsed trachea. The design of the tracheal stent plays a very significant role in its performance after deployment. This work proposes an auxetic design for PLA tracheal stent, designed through Fusion360. This research also showcases differences in performance between traditionally designed stents and auxetic-designed stents. The computational studies are performed on ANSYS, and the data are validated based on deviations in the performance of existing designs. The proposed auxetic stent design was found to have an increase of 11.45% in diameter.