Abstract

Info

Title:: Simulation analysis on mechanical mechanism of proximal gastrectomy with anti-reflux anastomosis using triangle-valve technique

Author(s):: ZHAO Shaokun1; GAO Yongshun2; SUN Jiangang2; CAO Wei1; YI Ling3; GUO Pan3; 1. National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China 2. Department of Gastrointestinal Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China 3. School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, China

Keywords:: Keywords: adenocarcinoma of the esophagogastric junction anti-reflux artificial triangular valve computational fluid dynamics

Abstract:: Abstract: Objective To carry out the fluid dynamics-based numerical simulation of gastric chyme after proximal gastrectomy with anti-reflux anastomosis using triangle-valve technique (PG-TVT) for the adenocarcinoma of the esophagogastric junction (AEG), and to further analyze the flow characteristics of different gastric chymes. Methods Based on the constructed gastric simulation models after conventional PG or PG-TVT, Fluent software was used to numerically simulate the gastric reflux with different viscosities. Results Compared with conventional PG, PG-TVT had a better anti-reflux effect in standing posture. In supine posture, when the viscosity of the gastric chyme was greater than 0.145 2 Pa[?s and the stomach chyme did not exceed the artificial valve, PG-TVT could also achieve a better anti-reflux effect. Moreover, the numerical simulation results of PG-TVT were consistent with the clinical manifestations. Conclusion This simulation analysis provides a theoretical and numerical basis for the analysis on the effectiveness of PG-TVT, the postoperative diet of clinical patients and the further improvement of surgical planning.