Document Type

Abstract

Publication Date

2-11-2026

Comments

Presented at the 2026 Scholarly Inquiry (SI) Research Project Symposium.

Abstract

Introduction

In-situ laser fenestration has become increasingly critical in endovascular surgery. However, the higher risk of endoleak and microthrombosis has raised concerns about achieving optimal outcomes.

In a previous study, researchers performed laser fenestration on several commonly used graft materials and compared fabric fraying and directional tear propagation. However, the experimental environment was suboptimal because the fenestration angle was not controlled. This may limit the validity of the results.

In this SI project, we aim to create a more controlled environment for laser fenestration by designing and 3D printing an enclosure that mimics the anatomy of the aorta and the common iliac artery, as well as controlled perpendicular accesses in a fixed 90-degree angle.

Methods

A series of bench experiments will be conducted to evaluate the tearing properties of different graft materials using a 3D-printed transparent enclosure with fixed angles for laser fenestration and balloon dilation. Multiple aortic endografts will be selected for testing. Fenestration geometry, fabric fraying, and directional tear propagation will be measured using light microscopy and SEM.

Results

We anticipate that laser fenestration and subsequent balloon dilation will create defects with differences in tear length, edge fraying, and tear direction between graft materials, fenestration angles, and laser energy levels.

Conclusions

This study presents a reproducible platform for evaluating the durability and safety of various endografts for laser fenestration applications. Future studies may incorporate pulsatile flow models to better simulate the in vivo hemodynamic environment and evaluate a broader range of graft materials.

Additional Files
Bi_Tuyaa_poster.pdf (1604 kB)

Language

English

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