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Optimal microcatheter shaping method customized for a patient-specific vessel using a three-dimensional printer.

¹Department of Neurosurgery, CHA Bundang Medical Center, School of Medicine, CHA University, Seongnam, Korea.

Journal of Cerebrovascular and Endovascular Neurosurgery

|February 3, 2021

Summary

Custom-shaped microcatheters created using computer software and 3D printing improve navigation for cerebral aneurysm coil embolization. This patient-specific approach enhances microcatheter positioning accuracy during endovascular procedures.

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Area of Science:

Medical Engineering
Interventional Radiology
Biomedical Imaging

Background:

Accurate microcatheter positioning is crucial for successful cerebral aneurysm coil embolization.
Current methods for shaping microcatheters can be challenging and time-consuming.
Patient-specific anatomical variations require tailored approaches for optimal device deployment.

Purpose of the Study:

To develop and evaluate a novel method for creating patient-specific shaped microcatheters.
To utilize computer software and 3D printing for custom microcatheter fabrication.
To assess the efficacy of patient-specific microcatheters in simulated aneurysm models.

Main Methods:

3D vascular imaging data was processed to create simplified, skeletalized central line structures.

Keywords:

Software Therapeutic embolization ‌Intracranial aneurysm

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A custom computer application was used to shape microcatheters based on patient-specific vascular data.

Simulations were performed using 10 hollow 3D models of cerebral vasculature to validate microcatheter positioning.

Main Results:

Microcatheter positioning into the target aneurysm was successful in all 10 simulated models.
Successful navigation was achieved within one or two attempts, demonstrating high accuracy.
The patient-specific shaped microcatheters showed excellent compatibility with the simulated vascular anatomy.

Conclusions:

Computer-aided design and 3D printing enable the creation of patient-specific microcatheters for cerebral aneurysm treatment.
This technique offers a promising approach to improve microcatheter shaping and guidance during endovascular procedures.
Further investigation and application in clinical settings are warranted to validate this innovative technique.