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

Abstract

Background 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 3–4 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. Conclusion 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.

Development of a novel colorectal endoscopic submucosal dissection training model

“…Applying our previously developed gastric ESD model 4 , we have developed a colorectal ESD training model using non-animal materials with KOTOBUKI Medical, Inc. (Saitama, Japan) to resolve these issues ( Fig. 1 ).…”

Safe and Efficient Procedures and Training System for Endoscopic Submucosal Dissection

“…This is a major challenge for trainees. Therefore Mitsui et al evaluated the actual resection speed using G-Master and its ease of use, and reported that it is useful for gastric ESD training [24]. G-Master is used in our department for training prior to the conduct of gastric ESD procedures (Figure 2).…”

Objective indicators of endoscopic submucosal dissection skills through electrosurgical unit analysis

“…Therefore, the data may not have been obtained under the same conditions. Non‐animal ESD training models provide high reproducibility for both site and mucosa, 7–9 and data could have been collected under consistent conditions if such models were used. Further research is imperative to validate these findings in a clinical setting and must focus on the relationship between ESU analysis and clinical outcomes, including vital aspects such as tissue quality, adverse events, and recurrence rates.…”