A urinary catheter is a flexible tube used to drain urine from the bladder. It is often inserted through the urethra and can be used for patients who are unable to urinate naturally due to medical conditions, surgery, or injury. Catheters can be temporary or long-term, depending on the patient's needs. There are different types of urinary catheters, including intermittent catheters, which are inserted and removed several times a day, and indwelling catheters, which remain in place for an extended period. Proper care and hygiene are essential to prevent infections and complications associated with catheter use.