Function-preserving in colorectal cancer surgery assisted by laparoscopy and da Vinci robotic surgical system

［Abstract］ Minimally invasive surgery has become the mainstream approach for treating colorectal cancer, with function-preserving being a focal point of recent surgical discussions. Compared with open surgery, laparoscopic surgery and da Vinci robotic surgery align more closely with the surgical principles of minimal invasion, “bloodlessness”, and function-preserving. This article delves into the aspects of function-preserving in laparoscopic and da Vinci robot-assisted colorectal cancer surgery, including visual surgical techniques, surgical manipulation-related injuries, preservation of autonomous nerves, sphincter-preserving surgery, holistic integrative medicine concept and natural orifice specimen extraction surgery, and precise preoperative evaluation and the application of novel technologies. The aim is to share insights with colleagues in the field.