11. UPDATED VALIDATION OF 3D PRINTING-BASED TRAINING TOOLS FOR TRANSANAL SURGERY

Abstract

Abstract Introduction Due to the complexity of colorectal surgery, the development of specialised training tools is necessary to improve the technical skills of surgeons in a controlled environment. In the framework of the MIREIA Project, this study proposes an updated design of a toolkit to provide a safe and effective environment for colorectal surgery training. Methods Work was carried out on the design of a silicone colon model using injection moulds, consisting of two components (the colon model and its wrap), using the fused deposition 3D printing technique. Two layers of silicone were added to simulate the mucosal and muscular layers. A group of surgeons evaluated the formative utility of the model in transanal surgery, performing resection and suturing of polyps inside the model. Results According to the results of the validation study, the silicone colon model showed adequate behaviour during insufflation and a positive haptic response to contact with laparoscopic forceps. This model accurately reproduces the layers of the colon and allows customisation for each patient. In addition, polyp removal is realistic and the elastic layers support stitches, providing greater realism during surgery. Conclusion A realistic simulator has been developed for training in transanal laparoscopic surgery, but improvements in the final design are needed for widespread implementation. The application of an aqueous gel on the mucosal layer is proposed to improve the realism of the training.