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Related Experiment Video

Updated: May 7, 2026

Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention
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Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention

Published on: September 18, 2015

Structural analysis for Wingspan stent in a perforator model.

Motoaki Fujimoto1, Yasuhiro Shobayashi, Koichiro Takemoto

  • 1Division of Interventional Neuroradiology, Department of Radiological Sciences, David Geffen School of Medicine, University of California Los Angeles; Los Angeles, CA, USA -

Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences
|September 28, 2013
PubMed
Summary
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Wingspan stenting can cause perforator infarction. Simulations show high stress around stent struts deforms the artery, potentially leading to perforator occlusion. This structural deformation may explain post-stenting complications.

Area of Science:

  • Biomedical Engineering
  • Neurointerventional Surgery
  • Computational Fluid Dynamics

Background:

  • Perforator infarction is a significant complication following intracranial Wingspan stenting.
  • Understanding the mechanism of perforator infarction is crucial for improving patient outcomes.

Purpose of the Study:

  • To investigate the biomechanical mechanisms underlying perforator infarction after Wingspan stenting.
  • To analyze the interaction between the Wingspan stent, atheromatous plaque, and perforator arteries.

Main Methods:

  • Simulated stent-artery interaction using computational modeling.
  • Analyzed structural deformation and biomechanical stress distribution around the stent struts.
  • Evaluated the impact of stenting on the perforator orifice geometry.

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Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
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Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

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Last Updated: May 7, 2026

Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention
11:01

Ferromagnetic Bare Metal Stent for Endothelial Cell Capture and Retention

Published on: September 18, 2015

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
11:00

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

Main Results:

  • High radial stress concentrations were observed along the stent struts.
  • Areas of high circumferential stress were identified surrounding the stent.
  • Simulations demonstrated significant stretching and deformation of the perforator orifice post-stenting.

Conclusions:

  • Structural deformation of the artery and perforator orifice plays a key role in perforator occlusion.
  • Biomechanical forces induced by Wingspan stenting contribute to perforator infarction.
  • These findings offer insights into preventing post-stenting perforator complications.