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Characterization of Surgical Tools for Specific Endovascular Navigation.
1Univ Lyon, INSA Lyon, CNRS, LaMCoS, UMR5259, 69621, Villeurbanne, France.
Cardiovascular Engineering and Technology
|March 3, 2022
Summary
Mechanical characterization of active guidewires and catheters was performed. This data enables accurate numerical simulation of endovascular navigation for complex medical targets.
Area of Science:
- Biomedical Engineering
- Medical Device Characterization
- Computational Modeling
Background:
- Endovascular navigation requires precise control of surgical tools.
- Accurate mechanical properties of guidewires and catheters are crucial for simulation.
- Current simulation models lack detailed mechanical data for specific devices.
Purpose of the Study:
- To mechanically characterize commercially available active guidewires and catheters.
- To obtain data for implementing into numerical simulations of endovascular navigation.
- To improve simulation accuracy for complex target navigation.
Main Methods:
- 3-point bending tests and bending with added masses for guidewire component Young moduli determination.
- Activation tests under ideal conditions to study guidewire behavior.
- Mechanical property assessment of catheters using 3-point bending tests.
Main Results:
- Young moduli determined for guidewire shaft and distal tip.
- Optimal current intensity and activation time (1.7 s) defined for guidewire curvature.
- Catheters identified as elastic or viscoelastic, with highlighted rigidity gradients.
Conclusions:
- Mechanical characterization provides essential data for endovascular navigation simulations.
- Accurate material properties enable more reliable computational modeling.
- This work facilitates advanced simulation of navigating complex vascular targets.
