This intervention consists in placing a probe after locating by puncture of the bladder through the abdominal wall. This procedure is most often performed under local anesthesia and allows urine to flow directly from the bladder to the outside. This catheter is sometimes attached to the skin with a non-absorbable thread. The urine is collected in a collection bag. This therapeutic gesture is practiced when the bladder does not empty correctly by natural means. For your relief, it is necessary to allow the urine to flow outwards, but it is not possible to restore its usual path through the urethra canal.