Objective To review the application experience of ureteroscopy pneumatic lithotripsy combined with NTrap in the treatment of ureteral stones in primary hospitals.

Methods 190 patients who underwent ureteroscopic pneumatic lithotripsy from March 2015 to January 2018 were analyzed. Among these patients, 85 patients who underwent ureteroscopic pneumatic lithotripsy were assigned to group A, 35 cases of lower ureteral stones and 50 cases of middle and upper ureteral stones; 105 patients who underwent ureteroscopic pneumatic lithotripsy combined with the NTrap were assigned to group B, 40 cases of lower ureteral stones and 65 cases of middle and upper ureteral stones. The success rate of lithotripsy, operation time, postoperative complications, hospitalization time, and hospitalization cost were compared between the two groups.

Results The success rate of group A was 77.65% (66/85), and the success rate of group B was 93.33% (98/105), and the difference was statistically significant (P < 0.05).There was no statistical difference in the length of hospital stay and postoperative complications, but hospitalization costs were higher in group B than group A. The success rate of disposable lithotripsy in group A was lower than that in group B, and the difference was statistically significant(P < 0.05). There was no statistically significant difference in the success rate of lower calculi between groups A and B.

Conclusions The success rate of lithotripsy of upper ureteral calculi can be improved by using the combination of interception basket.