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Gastroenterology Research and Practice
Volume 2014 (2014), Article ID 908693, 7 pages
Research Article

A Novel Dry Model for Practicable Sphincterotomy and Precut Needle Knife Sphincterotomy

1Center for Gastroenterology, Teine-Keijinkai Hospital, 1-40-1-12 Maeda Teine-ku, Sapporo 006-8555, Japan
2Department of Gastroenterology and Hepatology, Tokyo Medical University, Tokyo 160-0023, Japan

Received 1 May 2014; Revised 25 August 2014; Accepted 25 August 2014; Published 10 September 2014

Academic Editor: Michel Kahaleh

Copyright © 2014 Akio Katanuma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Aim. We aimed to develop a simulation dry model for endoscopic sphincterotomy (ES) and needle knife precut sphincterotomy (NKP) and to evaluate its usefulness as a training simulator. Materials and Methods. An endoscopic retrograde cholangiopancreatography trainer was used as a duodenum, bile duct, and papilla simulator. A simulated papilla was created with a piece of rolled uncured ham, and ES and NKP were performed. Hands-on training was carried out using this model, and success and failure of the procedures were evaluated. A questionnaire survey was conducted among the participants to assess the performance and usefulness of the dry model for ES and NKP training. Results. Twenty-two endoscopists participated in the hands-on training using this dry model. ES was successful in 33 out of 34 attempts (97%) whereas NKP was successful in all 7 attempts (100%). Based on the results of the questionnaire survey, the median score for realism was 7 (range: 2–9) for ES and 8 for NKP on a scale of 1 to 10. Conclusions. The dry model using an uncured ham provides a condition closely similar to actual clinical practice and is useful as a training model for ES and NKP.