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Microcatheter movement in the aneurysm due to low-profile visualized intraluminal support deployment: An in vitro study - 09/04/22

Doi : 10.1016/j.neurad.2022.03.010 
Hiroyuki Ikeda , Masanori Kinosada, Minami Uezato, Yoshitaka Kurosaki, Masaki Chin, Sen Yamagata
 Department of Neurosurgery, Kurashiki Central Hospital, Kurashiki, Japan 

Corresponding author: Department of Neurosurgery, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, 710-8602, Japan.Department of NeurosurgeryKurashiki Central Hospital1-1-1 MiwaKurashiki710-8602Japan
En prensa. Pruebas corregidas por el autor. Disponible en línea desde el Saturday 09 April 2022

Abstract

Background

When a microcatheter is in the aneurysm, it may move due to low-profile visualized intraluminal support (LVIS) deployment. This study was designed to determine this mechanism.

Methods

Six silicon aneurysm models were created by combining the aneurysm location (side wall or bifurcation) and the parent vessel configuration (straight, ipsilateral bending, or contralateral bending). After adjusting the microcatheter tip position in the aneurysm by pushing or pulling, an LVIS stent was deployed to cover the aneurysm neck, and the changes in the microcatheter tip position was measured. Pushing and pulling were performed 15 times each for each model, for a total of 180 experiments.

Results

In all experiments, the microcatheter tip moved with LVIS deployment. The total movement distance was 3.00±1.59 mm, which was significantly different between the push and pull groups (p = 0.049), between the three side-wall aneurysm models (p<0.0001), and between the three bifurcation aneurysm models (p<0.0001). Backward movement in the aneurysm occurred in 21% (37/180). The frequency of backward movement was significantly different between the side-wall and bifurcation aneurysm models (p = 0.0265) and between the push and pull groups (p<0.0001). The forward movement distance was significantly different between the side-wall (n = 78) and bifurcation (n = 65) aneurysm models (p<0.0001).

Conclusions

The aneurysm location, the parent vessel configuration, and adjustment of the microcatheter tip position by pushing or pulling may affect the total movement distance and forward/backward movement of the microcatheter tip due to LVIS deployment.

El texto completo de este artículo está disponible en PDF.

Graphical abstract




Image, graphical abstract

El texto completo de este artículo está disponible en PDF.

Highlights

We examine microcatheter movement in the aneurysm due to LVIS deployment.
An aneurysm location (side wall or bifurcation) affects microcatheter movement.
A parent vessel configuration (straight, ipsilateral bending, or contralateral bending) affects microcatheter movement.
An adjustment of the microcatheter tip position by pushing or pulling affects microcatheter movement.

El texto completo de este artículo está disponible en PDF.

Keywords : Aneurysm, Device, Stent, LVIS, Microcatheter, Jailing technique

Abbreviations : LVIS


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© 2022  Elsevier Masson SAS. Reservados todos los derechos.
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