catheters

Urinary catheters are small tubes that are inserted into the bladder to drain urine. They may
be inserted via the urethra, a Mitrofanoff (see below) or through the abdominal wall
(suprapubic catheter). Catheters can be indwelling (they remain in the bladder for days or
weeks at a time), or intermittent (they are inserted and then removed as soon as the
bladder is empty).