Work

Safety analysis of the Weigao laparoscopic surgical robot for renal cyst decortication via transperitoneal and retroperitoneal approaches

Year: 2026

Type: article

Abstract: Objective To evaluate the efficacy and conduct a safety analysis of the Chinese domestically produced Weigao Micro Hand laparoscopic surgical robot in renal cyst decortication via transperitoneal and retroperitoneal approaches. Methods Clinical data were collected from 63 patients with renal cysts who underwent robot-assisted laparoscopic surgery between May 2023 and July 2025. Among them, 31 patients were treated via the transperitoneal approach and 32 patients were treated via the retroperitoneal approach. Clinical characteristics, as well as surgical and short-term postoperative outcomes, were prospectively collected and analyzed. Results Both the transperitoneal and the retroperitoneal approaches were successfully completed without conversion to open surgery or other unplanned interventions. No statistically significant differences were observed between the two approaches in terms of the operative time (66.13 ± 24.99 min vs. 77.50 ± 27.62 min) or postoperative hospital stay (3.87 ± 1.48 days vs. 4.56 ± 1.08 days). The retroperitoneal approach was associated with significantly less intraoperative blood loss (15.68 ± 4.64 mL vs. 11.78 ± 3.80 mL, P < 0.05), whereas the transperitoneal approach was associated with a significantly shorter postoperative drainage duration (2.10 ± 0.98 days vs. 3.13 ± 1.62 days, P < 0.05). Conclusion The application of the Weigao robotic surgical system in renal cyst decortication demonstrates favorable feasibility and safety. With respect to surgical approach selection, both techniques have their respective advantages and disadvantages. Given the continuity of laparoscopic experience, considerations for surgical safety, and the benefit of more refined manipulation afforded by the robotic system, the retroperitoneal approach currently appears to be the preferable option. Clinical Trial Registration https://www.chictr.org.cn/showproj.html?proj=223823 , identifier ChiCTR2400081949.

Source: Frontiers in Surgery

DOI: 10.3389/fsurg.2026.1960246