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CC BY-NC-ND 4.0 · Asian J Neurosurg 2021; 16(03): 645-647
DOI: 10.4103/ajns.AJNS_90_21
Technical Note

A novel technique of microcatheter shaping using real image display for endovascular aneurysmal coil embolization

Tomotaka Ohshima
Neuroendovascular Therapy Center, Aichi Medical University, Nagakute
,
Yoshitaka Nagano
1   Department of Electronic Control and Robot Engineering, Aichi University of Technology, Gamagori, Aichi
,
Shigeru Miyachi
2   Department of Neurosurgery, Aichi Medical University, Nagakute
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In coil embolization of intracranial aneurysms, guiding the microcatheter to an appropriate site in the aneurysm and stabilizing it there are important. In paraclinoid internal carotid aneurysms, complicated three-dimensional (3-D) shaping of the microcatheter tip is occasionally required. We devised a novel shaping method for microcatheters by using a real image display (RID). The usefulness of this technique was validated. We used a RID consisting of a couple of concave mirrors. A piece of patient-specific vascular model, which was made using a 3-D printer before the operation, was set inside the RID. We obtained a real 3-D image just above the RID. As a microcatheter and its shaping inner mandrel could be entered in the hologram of the vasculature, we could create the actual shape of the microcatheter. The shaped microcatheter could be navigated at the desired position in the aneurysm. Complete obliteration of the aneurysm was achieved without any trouble among 30 consecutive cases. We evaluated the effectiveness of the RID for making and navigating a microcatheter in cases with challenging anatomies. It was useful for favorable microcatheter shaping, as the RID could be entered inside the aneurysm models, unlike when tracing the outer surface of rigid 3-D models.

Key-words:

Coil embolization - intracranial aneurysm - microcatheter - shaping

Financial support and sponsorship

This work was supported by JSPS KAKENHI Grant Number JP18K09010.




Publication History

Received: 28 February 2021

Accepted: 26 April 2021

Article published online:
16 August 2022

© 2021. Asian Congress of Neurological Surgeons. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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