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Updated: Jun 5, 2026

A New Ex Vivo Model for the Evaluation of Endoscopic Submucosal Injection Material Performance
Published on: October 19, 2018
[Endoscopic inanimate biological simulators for training in endoscopic mucosal dissection]
P Figueroa-Barojas1, S Sobrino-Cossío, A Hernández-Guerrero
1Departamento de Endoscopia, Instituto Nacional de Cancerología, México, D.F. México. drapaolafigueroa@gmail.com
Biological inanimate simulators effectively train endoscopic submucosal dissection (ESD) skills with a good safety margin. Further practice is needed to improve the learning curve for this complex endoscopic procedure.
Area of Science:
- Gastroenterology
- Medical Simulation
- Surgical Education
Context:
- Endoscopic submucosal dissection (ESD) is a standard treatment for early gastric cancer, enabling en bloc resection of larger lesions.
- ESD requires specialized skills and longer procedure times compared to endoscopic mucosal resection, highlighting the need for effective training methods.
- Simulators offer a risk-free environment for training, skill development, and technique standardization in complex endoscopic procedures.
Purpose:
- To evaluate the efficacy of biological inanimate simulators in developing endoscopic skills essential for performing ESD.
- To assess the safety and feasibility of using simulators for ESD training.
Summary:
- An experimental study utilized a biological inanimate simulator to train five endoscopists in ESD techniques.
- The study evaluated technical success, complication rates, and procedure times, with a mean dissection time of 21.08 minutes for 18 lesions.
- A strong positive correlation was observed between self-evaluation and instructor's evaluation, while lesion size did not correlate with procedure time. One perforation occurred and was managed successfully.
Impact:
- Biological inanimate simulators provide a safe platform for training complex endoscopic procedures like ESD.
- The findings suggest that while simulators aid in skill acquisition, increased procedural volume is necessary to optimize the learning curve.
- This training method allows for risk-free practice, enhancing trainee confidence and competence in ESD before patient procedures.
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