Gut Liver. 2019;13(4):415-420.

A Newly Designed 3-Dimensional Printer-Based Gastric Hemostasis Simulator with Two Modules for Endoscopic Trainees (with Video).

, ,

제1저자 이동석 · 교신저자 이진혁, 안지용

PMID 30970441 PMC6622563 DOI 10.5009/gnl18389 IF 4.1 소화기내과

소속 (2)

Department of Gastroenterology, SMG-SNU Boramae Medical Center, Seoul National University of College of Medicine, Seoul, Korea.
Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Abstract

BACKGROUND/AIMS We used 3-dimensional (3D) printing technology to create a new hemostasis simulator for the stomach and investigated its efficacy and realism in endoscopic hemostasis training.

METHODS A new stomach hemostasis simulator, with two hemostasis modules for hemoclipping and injection, was constructed using a 3D printer. Twenty-one endoscopists, including 11 first-year fellows (beginner group) and 10 faculty members (expert group), tested the performance of the simulator. We recorded and reviewed five training sessions and evaluated the simulator with questionnaires using a 7-point Likert scale.

RESULTS The mean evaluation score of the expert group was 6.3±0.5 for the hemoclipping module and 6.0±0.6 for the injection module. The expert group strongly agreed that endoscopic handling in the simulator was realistic and reasonable for hemostasis training. The mean procedure time for hemoclipping was 72.7±7.1 seconds for the beginner group and 19.7±1.2 seconds for the expert group. The mean procedure time for injection was 92.1±9.8 seconds for the beginner group and 36.3±2 seconds for the expert group. The procedure time of beginner group became shorter with repetition and was significantly lower by the fifth trial.

CONCLUSIONS A new 3D-printed hemostasis simulator is capable of hemostasis training and can very effectively train beginners before they perform the procedure in patients with gastrointestinal bleeding.

Keywords

EducationEndoscopyHemostasisPrintingSimulatorthree-dimensional

Figures

**Fig. 1** Hemostasis simulator composed of a hemoclipping module and injection module. (A) Artificial blood is supplied to the simulator through a pump. Any conventional endoscopic equipment can be used. (B) Two hemostasis modules are incorporated into the main body.

**Fig. 2** Hemoclipping module. (A) The hemoclipping module is composed of 16 protruding parts. The protruding parts are sealed with a metal pin blocking the artificial blood. (B) When the metal pin is removed from the protruding hole, artificial blood begins pumping in a manner similar to that of actual blood from a vessel. (C) When the hemoclip is properly positioned, the flow of artificial blood stops.

**Fig. 3** Injection module. (A) The inner part of the injection module has two stacked chambers and the outer part is made of the methacrylic acid ester cured by photoinitiator. (B, C) When the saline is injected into the outer chamber, the flow of artificial blood is diminished and stops if outer chamber pressure is high enough.

**Fig. 4** Procedure times for each trial for each group. (A) Hemoclipping module and (B) injection module.

그림 출처: PubMed Central 공개 논문 (PMC6622563)

Conflict of interest statement

CONFLICTS OF INTEREST. No potential conflict of interest relevant to this article was reported.

그 밖의 정보