Catheter infections

A urinary catheter is a flexible plastic tube used to drain urine from your bladder when you cannot urinate by yourself. A doctor will place the catheter into the bladder by inserting it through the urethra, the opening that carries urine from the bladder to the outside of the body. When the catheter is in the bladder, a small balloon is inflated to keep the catheter in place. The catheter allows urine to drain from the bladder into a bag that is usually attached to the thigh.