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Related Experiment Video

Updated: Feb 8, 2026

Monitoring the Wall Mechanics During Stent Deployment in a Vessel

Monitoring the Wall Mechanics During Stent Deployment in a Vessel

Published on: May 8, 2012

Multiobjective design optimization of stent geometry with wall deformation for triangular and rectangular struts.

Narendra Kurnia Putra¹, Pramudita Satria Palar², Hitomi Anzai²

¹Department of Bioengineering and Robotics, Graduate School of Engineering, Tohoku University, Aramaki-Aza Aoba 6-6-4, Aoba-ku, Sendai, Miyagi, 980-8579, Japan. naren@biofluid.ifs.tohoku.ac.jp.

Medical & Biological Engineering & Computing

|July 4, 2018

Summary

This summary is machine-generated.

Optimizing stent geometry minimizes vessel injury and restenosis. Triangular struts with specific gap and length configurations improve blood flow and reduce stress, enhancing intravascular hemodynamics.

Keywords:

Computational simulation Kriging surrogate method Multiobjective optimization Restenosis Stent

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Last Updated: Feb 8, 2026

Monitoring the Wall Mechanics During Stent Deployment in a Vessel

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Design and Optimization Strategies of a High-Performance Vented Box

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Published on: June 9, 2023

Area of Science:

Biomedical Engineering
Cardiovascular Device Design
Computational Fluid Dynamics

Background:

Stent geometrical design impacts stent-vessel contact and blood flow dynamics.
Suboptimal designs can lead to intravascular abnormalities like vessel wall injury and restenosis.
Structural optimization is essential for improving stent performance and patient outcomes.

Purpose of the Study:

To perform multiobjective stent optimization for minimizing average stress and low wall shear stress ratio.
To evaluate the influence of stent strut geometry (triangular vs. rectangular) on intravascular hemodynamics.
To identify optimal stent configurations for enhanced hemocompatibility.

Main Methods:

Utilized surrogate-based optimization with Kriging method and Expected Hypervolume Improvement (EHVI).
Conducted 3D flow simulations incorporating wall deformation for both triangular and rectangular struts.
Optimized inter-strut gap (G) and side length (SL) parameters.

Main Results:

Identified optimal G-SL configurations: 2.81-0.39 mm for rectangular and 3.00-0.43 mm for triangular struts.
Demonstrated that triangular struts generally improve intravascular hemodynamics compared to rectangular struts.
The surrogate model effectively mapped optimal stent configurations based on stress and flow criteria.

Conclusions:

Triangular struts are superior for improving intravascular hemodynamics.
Optimized stent designs can mitigate risks of vessel wall injury and restenosis.
The study provides specific geometric recommendations for next-generation stent designs.