To address the limitations of current gastrointestinal endoscopy training systems—such as abstract modeling, low anatomical fidelity, and lack of support from adjacent organs—this study aimed to develop a high-fidelity upper gastrointestinal endoscopy training platform based on real imaging data, along with replaceable lesion training modules.

Three-dimensional reconstruction and optimized design were performed using patient CT images, preserving the upper gastrointestinal tract, adjacent organs, and bony structures. The outer shell and positioning framework were fabricated via 3D printing using TPU material, followed by rubber casting and overall assembly to form a complete human simulation model with a fixation system. According to training requirements, matching lesion modules for foreign body removal, polypectomy, and ESD were developed, enabling modular quick replacement and scenario expansion.

A simulated upper gastrointestinal endoscopy trainer was constructed that covers the pharynx, esophagus, stomach, duodenum, and pancreatobiliary system, integrating adjacent structures such as the liver, spleen, pancreas, diaphragm, and spine, together with a stable fixation system. Multiple compatible lesion training modules were successfully developed to meet training needs ranging from basic to advanced procedures. 

This trainer achieves high-fidelity design based on realistic anatomical structures, significantly enhancing the spatial perception and tactile feedback of endoscopic operations. It provides a reproducible and expandable solution for endoscopy education and skill training.