Objective:To investigate the effect of ureteroscopic lithotripsy with intercept stone network for the treatment of upper ureteral stones.Methods:236 patients with upper ureteral calculi were randomly divided into three groups.79 cases were treated by rigid ureteroscope lithotripsy

while 88 cases were treated by rigid ureteroscopic lithotripsy with intercept stone network but another 69 cases underwent percutaneous nephrolithotomy.Results:The success rate of primary lithotripsy in ureteroscopic lithotripsy with intercept stone network group was 97.7% and higher than that in ureteroscopic lithotripsy without intercept stone network group which was 83.5%(P<0.05)

but there was no significant difference compared with percutaneous nephrolithotomy group(98.5%

P>0.05).There was no significant difference in the complication rate among the three groups(P>0.05)

as well as operation time.The hospitalization time in ureteroscopic lithotripsy with intercept stone network group was(3.58±1.96) d

and was less than that in percutaneous nephrolithotomy group(8.62 d±1.84 d

P<0.05)

but there was no significant difference compared with ureteroscopic lithotripsy without intercept stone network group(3.49 d±1.79 d

P>0.05).Conclusion:Holmium laser lithotripsy under ureteroscope combined with intercept stone network which fixes calculi and then breaks stone in the treatment of upper ureteral calculi can prevent the calculi from being pushed back or reversed

and then can obtain high a calculus fragmentation success rate as percutaneous nephrolithotomy.