How long is the male urinary catheter?

Male ureter length>18-20cm, male ureter generally has two bends, mainly the anterior pubic curve and the inferior pubic curve, generally there are three strictures, namely the inner urethral orifice, the membranous part, and the outer urethral orifice. Male ureter is relatively long, so it must be noted when indwelling the ureter. To prevent urethral injury, fully insert the ureter into the bladder, insert 1- 2 cm into the bladder when urine is found to flow out, and then inflate the balloon. Many male urethra is too long, there is no effective catheter inserted into the urethra will balloon inflation, will cause urethral rupture bleeding.