To investigate the feasibility of domestic robotic-assisted hiatal hernia repair combined with fundoplication in an animal model.

Two pigs were selected as experimental subjects and underwent robotic-assisted hiatal hernia repair in July 2024. Both Nissen (360°) and Toupet (270°) fundoplication were performed on each pig. The surgical time, blood loss, robot setup and teardown time were recorded for each procedure.

During the surgery, the animals’ vital signs were stable, and no serious complications such as massive bleeding occurred. The surgical time for Nissen fundoplication was 145.0 min and 151.6 min in pig A and pig B, respectively, and for Toupet fundoplication was 150.0 min and 168.4 min in pig A and pig B, respectively. The robot setup time was 10.0 min and 10.5 min, and the teardown time was 5.0 min and 5.5 min, respectively. The intraoperative blood loss was 52.0 ml and 56.7 ml, respectively. Both pigs successfully completed the surgery without any mortality during or after the procedure.

The preliminary application of domestic robot-assisted hiatal hernia repair combined with fundoplication in a porcine animal model shows that it is feasible and surgically safe, providing a reference for subsequent complex surgical procedures and large-sample training.