Abstract:

Objective To study the feasibility of domestic single-port surgical robot assisted endoscopic system for partial nephrectomy， and analyze its safety in clinical partial nephrectomy based on experimental results Methods Three qualified experimental pigs were selected， two senior urological professors and a senior resident doctor used a domestic single-port surgical robot to perform partial nephrectomy on the left and right kidneys. Recorded the operation duration， hot ischemia duration， suture time， estimated blood loss， volume of renal parenchyma excision and other information. Results There were 8 wedge resection and 4 heminephrectomies. The kidney volume of wedge resection was （7.35 ± 0.81）mL and the blood loss was （8.50 ± 11.09）mL. The total operation time was （41.67 ± 8.50）min， and the time of resection was （5.88 ± 3.27）min and the stitching time was （11.75 ± 2.82）min. The kidney volume of heminephrectomy was （24.30 ± 2.18）mL， and the blood loss was （6.25 ± 4.35）mL. The total operation time of heminephrectomy was （47.00 ± 11.27）min， and the time of resection was （3.25 ± 1.5）min and the stitching time was （10.00 ± 5.25）min. No bleeding was observed on the wound after the Bull dog was released in all operations. There was no significant difference in operation time and blood loss between the heminephrectomy group and the wedge resection group. There was no significant difference in operation time or blood loss between the senior doctor group and the senior resident doctor group. The NASA-TLX scale was used to assess the degree of workload of the operator during surgical operations， and the results showed that none of the three surgeons had a high level of frustration.There were no adverse events related to the single-port surgical robot system during the operation. Conclusion It is safe and feasible for a domestic single-port surgical robot system to perform a partial nephrectomy.

Key words: single-port surgical robot system, minimally invasive, partial nephrectomy, safety, animal experiment