Development of new gastric endoscopic submucosal dissection training model: A reproducibility evaluation study

Tomohiro Mitsui; Yusuke Yoda; Hironori Sunakawa; Seiichiro Takayama; Keiichiro Nishihara; Atsushi Inaba; Daiki Sato; Tatsunori Minamide; Kenji Takashima; Keiichiro Nakajo; Tatsuro Murano; Tomohiro Kadota; Kensuke Shinmura; Hiroaki Ikematsu; Tomonori Yano

doi:10.1055/a-1845-5556

Endoscopy International Open, Table of Contents

CC BY-NC-ND 4.0 · Endosc Int Open 2022; 10(09): E1261-E1267
DOI: 10.1055/a-1845-5556

Original article

Development of new gastric endoscopic submucosal dissection training model: A reproducibility evaluation study

Tomohiro Mitsui

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Yusuke Yoda

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

²NEXT Medical Device Innovation Center, National Cancer Center Hospital East

³Division of Endoscopy, Saitama Cancer Center, Saitama, Japan

,

Hironori Sunakawa

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Seiichiro Takayama

⁴KOTOBUKI Medical, INC., Yashio, Japan

,

Keiichiro Nishihara

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Atsushi Inaba

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Daiki Sato

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

³Division of Endoscopy, Saitama Cancer Center, Saitama, Japan

,

Tatsunori Minamide

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Kenji Takashima

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

²NEXT Medical Device Innovation Center, National Cancer Center Hospital East

,

Keiichiro Nakajo

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Tatsuro Murano

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Tomohiro Kadota

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Kensuke Shinmura

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Hiroaki Ikematsu

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

,

Tomonori Yano

¹Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Chiba, Japan

²NEXT Medical Device Innovation Center, National Cancer Center Hospital East

› Author Affiliations

Abstract

Background and study aims Gastric endoscopic submucosal dissection (ESD) is a highly technical procedure mainly due to the distinctive shape of the stomach and diverse locations of lesions. We developed a new gastric ESD training model (G-Master) that could accurately recreate the location of the stomach and assessed the reproducibility of located lesions in the model.

Methods The model comprises a simulated mucous membrane sheet made of konjac flour and a setting frame, which can simulate 11 locations of the stomach. We assessed the reproducibility of each location in the model by assessing the procedure speed and using a questionnaire that was distributed among experts. In the questionnaire, each location was scored on a six-point scale for similarity of locations.

Results The mean score for all locations was high with > 4 points. Regarding locations, lower anterior and posterior walls had medium scores with 3 to 4 points. The procedure speed was slower in the greater curvature of the upper and middle gastric portions, where ESD is considered more difficult than the overall procedure speed.

Conclusions The new gastric ESD training model appears to be highly reproducible for each gastric location and its application for training in assuming actual gastric ESD locations.

Full Text

References

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