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Updated: Jul 8, 2026
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Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
Published on: December 6, 2024
Numerical evaluation method for catheter prototypes using photo-elastic stress analysis on patient-specific vascular
1Department of Micro-Nano Systems Engineering, Nagoya University, Nagoya, Japan. tercero@robo.mein.nagoya-u.ac.jp
Summary
A new quantitative method evaluates endovascular catheter performance using a robotic system and a vascular model. This analysis revealed prototype catheters with microcoils performed worse than standard surgical catheters.
Area of Science:
- Biomedical Engineering
- Medical Device Evaluation
- Surgical Simulation
Background:
- Quantitative analysis for endovascular catheter performance within the vascular lumen is currently lacking.
- Existing methods do not adequately assess the mechanical interactions between catheters and vascular walls during procedures.
Purpose of the Study:
- To develop and validate a novel quantitative system for evaluating endovascular catheter performance.
- To assess the impact of catheter design, specifically microcoils, on insertion performance.
Main Methods:
- A robotic system was engineered, incorporating a polyurethane elastomer vascular model within a polariscope.
- The system simulated catheter insertion trajectories, capturing motion and analyzing birefringence patterns caused by external stress.
- Numerical analysis of video frames quantified the stress exerted by catheters on the vascular model.
Main Results:
- The developed system successfully quantified catheter-induced stress on the vascular model.
- Prototype catheters, particularly those with microcoils at their tips, demonstrated significantly lower performance compared to a standard surgical catheter.
Conclusions:
- The proposed methodology offers a new quantitative approach for evaluating medical catheters.
- This system can also be utilized to assess physician skills in catheter manipulation during endovascular procedures.
