Abstract: Objective To investigate the efficacy and safety of negative pressure suction sheath lithotriptic for incarcerated ureteral calculi. Methods Ninety-eight patients with ureteral embedded stones admitted to our hospital were selected for the study.They were divided into 2 groups according to the differences in surgical methods.Forty-five patients in the study group were treated with negative pressure suction sheath ureteral lithotripsy,while 53 patients in the control group were treated with conventional ureteroscopic lithotripsy,comparing the clinical efficacy and other differences between the two groups.Results The operation time and renal pelvis pressure in the study group were lower than those in the control group,and the stone clearance rate was higher than that in the control group(P<0.05).There was no difference in the relevant test indexes between the two groups before surgery(P>0.05),while the relevant test indexes in the study group improved significantly after surgery than those in the control group(P<0.05).Postoperative day 1,the complication rate of patients in the study group was significantly lower than that of the control group(P<0.05).After surgery,the prognosis of patients in the study group was significantly better than that of patients in the control group(P<0.05).Conclusion The efficacy of negative pressure suction sheath ureterolithotripsy in patients with incarcerated decrease the occurrence of postsurgical complications,which not only significantly improves the stone removal rate,but also reduces the inflammatory response of patients to surgery and ultimately improves their prognosis.

Key words: ureteral lithotripsy with negative pressure sheath, ureteral lithotripsy, ureteral stone, serum index, safet