A catheter is a slender, flexible tube used in medical procedures to access or deliver fluids to various parts of the body. It serves a diverse range of functions, from draining urine from the bladder to administering medications directly into blood vessels. Catheters are designed to be minimally invasive and can be temporary or permanent, depending on the medical requirement. These medical devices play a vital role in diagnosing and treating various conditions while minimizing discomfort for patients.