To summarize the application experience of aspirator in robot "3+ 2" assisted radical gastrectomy.

Retrospective analysis of clinical and surgical data of 21 patients with robotic radical gastrectomy in our department from Jan. to Aug. 2018.

The average age of this group of patients was 57.5 years old, and the body mass index was 22.4 kg/m². During the operation, the second assisted hand-held forceps were used to expose the surgical field, and the first assited hand-held suction device was used for local visual field cleaning to assist the operation process. The preoperative time was 30-50 minutes, with an average of 38.7 minutes; the operation time was 120-260 minutes, with an average of 186.7 minutes; the intraoperative blood loss was 30-120 ml, with an average of 62.2 ml; the number of lymph node dissection was 562, with an average of 26.7; One case of spleen injury was caused by tearing of the spleen capsule, compression and hemostasis, and no spleen was removed. No serious complications occurred during the operation.

The da Vinci robot radical gastrectomy, especially for obese and advanced gastric cancer patients, the "3+ 2" model is safe and practical. It is conducive to the new surgeons who develop robotic gastric cancer, which can reduce the resistance. The assistants can use the aspirator to provide good surgical field, reduce the difficulty of surgery, reduce the operation time, and better clinical teaching.