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CC BY-NC-ND 4.0 · Endosc Int Open
DOI: 10.1055/a-2351-0647
Original article

Mechanical evaluation of the dilation force of dilation devices during interventional endoscopic ultrasound

Takeshi Ogura
1   2nd Department of Internal Medicine, Osaka Medical College, Takatsuki-shi, Japan
,
Saori Ueno
2   2nd Department of Internal Medicine, Osaka Medical College, Osaka, Japan
,
Akitoshi Hakoda 
3   2nd Department of Internal Medicine, Osaka Medical College, Takatsuki, Japan (Ringgold ID: RIN13010)
,
Atsushi Okuda 
4   2nd Department of Internal Medicine, Osaka Medical College, Takatsukishi, Japan
,
Nobu Nishioka
5   2nd Department of Internal Medicine, Osaka Medical College, Takatsukishi, Japan
,
Jun Sakamoto
6   2nd Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan (Ringgold ID: RIN13010)
,
Masahiro Yamamura
7   2nd Department of Internal Medicine, Osaka Medical College, Takatsuki-shi, Japan
,
Nobuhiro Hattori
8   2nd Department of Internal Medicine, Osaka Medical College, Takatsuki-shi, Japan
,
Kimi Bessho
6   2nd Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan (Ringgold ID: RIN13010)
,
Hiroki Nishikawa
6   2nd Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki, Japan (Ringgold ID: RIN13010)
,
Rie Kanaoka
9   Department of Business planning, Kaneka Medix Corporation, Osaka, Japan (Ringgold ID: RIN88336)
,
Youhei Kurose
9   Department of Business planning, Kaneka Medix Corporation, Osaka, Japan (Ringgold ID: RIN88336)
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Background and aim To insert the metal stent delivery system (8.5Fr) during interventional EUS, several dilation steps are needed, and this may be related to increased bile leakage from a fistula. TThere have been no definitive studies of dilation force. The aim of the present study was to evaluate dilation force during I-EUS using several dilation devices. Method In the present study, seven dilation devices were evaluated including bougie dilators such as straight-shaped dilator (the ES dilator, Soehendra dilator, a standard ERCP catheter) and screw-shaped dilator (Tornus ES, Soehendra stent retriever), and 4mm-balloon catheter (REN biliary balloon catheter, Hurricane RX). The diameter of each dilators and dilation force was measured. Result Of the bougie dilators, the dilation force of the ES dilator was the highest (0.908 ± 0.035 kg). Of the balloon catheters, the dilation force of the Hurricane RX (3.261 ± 0.024 kg) was slightly higher than that of the REN (3.159 ± 0.072 kg). Of the bougie dilators, although the diameter of the ES dilator was not larger than that of the Tornus ES the dilation force was stronger. Similarly, the diameter of the Soehendra stent retriever was greater than that of the ERCP catheter or Soehendra dilator, and the dilation force was lower. In conclusion, compared with bougie dilators, balloon catheters have stronger dilation force according to our experimental study. The present results should be evaluated in clinical trials.



Publikationsverlauf

Eingereicht: 22. April 2024

Angenommen nach Revision: 13. Juni 2024

Accepted Manuscript online:
24. Juni 2024

© . The Author(s). 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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