Application of 3D Printing Technique in Radical Gastrectomy With Leonardo da Vinci Robot

The investigators will work with general surgery, imaging department and 3D printing center to try to print gastric cancer model and guide the operation. After obtaining the approval of the Hospital Ethics Committee, 20 patients with gastric cancer were collected for imaging examination and evaluation, and the normal physical model of 70% normal volume was printed with Guang Min resin material.The investigators will analyse the anatomical relationship between the tumor and surrounding tissues,and determine the range of tumor excision and the feasibility and safety of radical gastrectomy with Leonardo da Vinci robot for gastric cancer.Through the assistance of the 3D model,The investigators will select the suitable operation path to determine the extent of tumor excision and lymph node dissection.Furthermore, 3D print model is used to provide real-time navigation for key steps of surgery. The purpose of this research is to observe the application value of 3D printing technique in gastric cancer laparoscopic surgery with Leonardo da Vinci robot radical gastrectomy, and to provide reference for the development of 3D printing model of other complicated digestive tract surgery.