This is a prospective, multicenter, randomized controlled, and superiority study. The two groups were randomly selected into a total of 150 subjects (75 in the test group and 75 in the control group) according to 1:1. The test group was treated with urethral drug balloon catheter from Lepu Medical Technology (Beijing) Co.,Ltd., while the control group was treated with direct vision internal urethrotomy (DVIU).~All subjects were followed up at 1, 3 and 6 months post-procedure, and the efficacy of urethral drug balloon catheter will be evaluated with the success rate of operation at 6 months as the main end point. Observe the occurrence of complications and other indicators to make a reliable evaluation of the safety of urethral drug balloon catheter.
To evaluate the safety and efficacy of urethral drug balloon catheter in the treatment of urethral stricture.