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CC BY-NC-ND 4.0 · Asian J Neurosurg 2024; 19(03): 349-353
DOI: 10.1055/s-0042-1757216
Original Article

Positional Relationship between Two Microcatheters according to the Navigation Sequence within the Curved Vessel in Neuroendovascular Procedures

Tomotaka Ohshima
1   Neuroendovascular Therapy Center, Aichi Medical University, Nagakute, Aichi, Japan
,
Megumi Koiwai
2   Department of Neurosurgery, Aichi Medical University, Nagakute, Aichi, Japan
,
Naoki Matsuo
2   Department of Neurosurgery, Aichi Medical University, Nagakute, Aichi, Japan
,
Shigeru Miyachi
1   Neuroendovascular Therapy Center, Aichi Medical University, Nagakute, Aichi, Japan
2   Department of Neurosurgery, Aichi Medical University, Nagakute, Aichi, Japan
› Author Affiliations Funding None.
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Abstract

Objective In neuroendovascular treatment, there are many opportunities to guide multiple catheters into the intracranial blood vessels. We report the relationship between two microcatheters according to the guiding order with experimental in vitro studies.

Materials and Methods We hypothesize that in a bent blood vessel such as a paraclinoid region of the internal carotid artery, the catheter that was first guided tended to pass through the inside, and the catheter that was guided later tended to pass through the outside. The in vitro verification was performed using a microcatheter and a balloon catheter in a silicone vascular aneurysmal model.

Results As a result, it was found that the two catheters were arranged according to our hypothesis. This finding was also observed during the actual operation of balloon-assisted coil embolization.

Conclusion The positional relationship between the two catheters according to the navigation order is very important, in particular during balloon-assisted coiling and stent-assisted coiling via a jailed microcatheter.

Keywords

endovascular treatment - intracranial aneurysms - coil embolization - microcatheter

Authors' Contributions

Tomotaka Ohshima was involved in concepts, design, literature search, and manuscript preparation. Shigeru Miyachi edited and reviewed the manuscript. All the authors critically revised the article and provided final approval of the article.




Publication History

Article published online:
24 June 2024

© 2024. 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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