Abstract:Abstract: Objective To explore the feasibility of using soft ureteroscope to attract stones for the treatment of horseshoe kidney stones, which can intelligently monitor the internal pressure of the renal pelvis. Methods From June 2016 to March 2018, 9 cases of horseshoe kidney complicated with kidney stones were treated with ureteroscopic holmium laser lithotripsy. During the operation, a self-developed F12/F14 flexible ureteroscope suction sheath capable of measuring pressure and a medical perfusion suction platform were used to intelligently monitor the internal pressure of the renal pelvis. The operation time, average hospital stay, stone removal rate and complications were analyzed, and the stone removal rate was evaluated by CT or KUB examination 1 month after operation. Results The stone diameter of the 9 patients was about (1.8 ± 0.7) cm, the average operation time was (53.2 ± 15.2) min, the average hospital stay was (2.5 ± 1.2) d, and the stone clearance rate was 88.89% in the first month after operation. One patient underwent extracorporeal shock wave lithotripsy after operation, and the stone was also cleared. One patient suffered from lumbar pain and three patients suffered from mild hematuria after symptomatic treatment. No serious complications such as fever, perforation of ureter or stricture of ureter or avulsion of ureter occurred after the operation. Conclusion The soft ureteroscopic aspiration lithotomy, which can intelligently monitor the internal pressure of the renal pelvis, is safe and effective in the treatment of horseshoe kidney with high stone clearance rate and few complications.