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CC BY 4.0 · Endosc Int Open 2021; 09(10): E1536-E1541
DOI: 10.1055/a-1523-8959
Original article

Possibility of new shielding device for upper gastrointestinal endoscopy

Daisuke Kikuchi
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
,
Daiki Ariyoshi
2   Olympus Medical Systems Corporation, Tokyo, Japan
,
Yugo Suzuki
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
,
Yorinari Ochiai
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
,
Hiroyuki Odagiri
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
,
Junnosuke Hayasaka
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
,
Masami Tanaka
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
,
Tetsuya Morishima
2   Olympus Medical Systems Corporation, Tokyo, Japan
,
Keita Kimura
2   Olympus Medical Systems Corporation, Tokyo, Japan
,
Hiroshi Ezawa
3   Olympus Corporation, Tokyo, Japan
,
Risa Iwamoto
2   Olympus Medical Systems Corporation, Tokyo, Japan
,
Yoshinori Matsuwaki
4   Matsuwaki Clinic Shinagawa, Tokyo, Japan
,
Shu Hoteya
1   Department of Gastroenterology, Toranomon Hospital, Tokyo Japan
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Abstract

Background and study aims Infection control is essential when performing endoscopic procedures, especially during the COVID-19 pandemic. Therefore, we have developed a new shielding device called STEP for infection control in upper gastrointestinal endoscopy.

Patients and methods STEP consists of a mask worn by the patient and a drape that is connected to the mask and covers the endoscope. A suction tube attached to the mask prevents aerosols from spreading. The endoscopist operates the endoscope through the drape. Three endoscopists performed a total of 18 examinations using an upper endoscopy training model with and without STEP. Endoscopic images were evaluated by three other endoscopists, using a visual analog scale. We also simulated contact, droplet, and aerosol infection and evaluated the utility of STEP.

Results All examinations were conducted without a problem. Mean procedure time was 126.3 ± 11.6 seconds with STEP and 122.3 ± 10.0 seconds without STEP. The mean visual analog score was 90.7 ± 10.1 with STEP and 90.4 ± 10.0 without STEP. In the contact model, adherence of simulated contaminants was 4.9 ± 1.4 % without STEP and 0 % with STEP. In the droplet model, the number of simulated contaminants attached to the paper was 338 273 ± 90 735 pixels without STEP and 0 with STEP. In the aerosol model, the total number of particles was 346 837 ± 9485 without STEP and was significantly reduced to 222 ± 174 with STEP.

Conclusions No effect on examination time or endoscopic image quality was observed when using STEP in upper gastrointestinal endoscopy. Using STEP reduced the diffusion of simulated contaminants in all three infection models.



Publication History

Received: 23 February 2021

Accepted: 17 May 2021

Article published online:
16 September 2021

© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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