Behaviour of two typical stents towards a new stent evolution

M Simão, J M Ferreira, J Mora-Rodriguez, J Fragata, H M Ramos

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study explores the analysis of a new stent geometry from two typical stents used to treat the coronary artery disease. Two different finite element methods are applied with different boundary conditions to investigate the stenosis region. Computational fluid dynamics (CFD) models including fluid-structure interaction are used to assess the haemodynamic impact of two types of coronary stents implantation: (1) type 1-based on a strut-link stent geometry and (2) type 2-a continuous helical stent. Using data from a recent clinical stenosis, flow disturbances and consequent shear stress alterations introduced by the stent treatment are investigated. A relationship between stenosis and the induced flow fields for the two types of stent designs is analysed as well as the correlation between haemodynamics and vessel wall biomechanical factors during the initiation and development of stenosis formation in the coronary artery. Both stents exhibit a good performance in reducing the obstruction artery. However, stent type 1 presents higher radial deformation than the type 2. This deformation can be seen as a limitation with a long-term clinical impact.

Original languageEnglish
Pages (from-to)1019-1037
Number of pages19
JournalMedical & Biological Engineering & Computing
Volume55
Issue number6
Early online date26 Sep 2016
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Computational fluid dynamic (CFD)
  • Coronary artery disease (CAD)
  • Haemodynamic analysis
  • Stenosis
  • Stent geometry

Fingerprint Dive into the research topics of 'Behaviour of two typical stents towards a new stent evolution'. Together they form a unique fingerprint.

  • Cite this