关键词: 磁锚定技术, 腹腔镜手术, 磁铁类手术钳, 巴马小型猪, 动物实验

Abstract: Objective　To exploring the application of novel separable magnetically-controlled forceps in laparoscopic minimally invasive surgeries.Methods　Four Bama miniature pigs were used as subjects. After general anesthesia, laparoscopic cholecystectomy, partial hepatectomy, and partial gastrectomy were performed. A novel separable magnetically-controlled forceps was used instead of Allis forceps to assist in pulling and exposing the surgical field. The operation time, intraoperative blood loss, whether auxiliary incisions were needed during the operation, and intraoperative unexpected events were recorded to evaluate the safety of the separable magnetic forceps. The 5-point Likert scale was used to assess the satisfaction of the operators’ operations and the generalizability of the separable magnetic forceps. The study conformed to the animal ethics regulations. Results　With the aid of the novel separable magnetically-controlled forceps, laparoscopic cholecystectomy, partial liver resection and partial stomach resection with reduction of the puncture hole in the abdominal cavity were successfully performed on all four Bama miniature pigs. The operation durations were (15.43±2.32) minutes, (18.71±4.21) minutes, and (23.32±3.43) minutes, respectively. The average intraoperative blood loss was less than 10 mL. The surgeon expressed a high level of satisfaction regarding the opening and closing, clamping, separation, and retrieval capabilities of the detachable magnetic control forceps. Additionally, the exposure of the surgical area was deemed satisfactory. Throughout the procedure, no adverse events transpired, including the detachment of the magnetic iron from the detachable magnetic forceps head, damage to the abdominal wall contact area, or the inability to retrieve the forceps head. Following the surgery, the experimental animals exhibited good survival rates, and no severe complications were encountered during the perioperative period.Conclusion　The novel separable magnetically-controlled forceps is safe and effective in assisting laparoscopic hepatobiliary, gastrointestinal, and other surgeries. It can achieve excellent tissue traction and visualization, facilitate port reduction in minimally invasive surgery, and has clinical promotion value. 

Key words: magnetic anchoring guidance, laparoscopic surgery, magnets surgical instruments, bama miniature pig, animal experimentation