Definition
A catheter is a thin tube inserted into the body to drain or inject fluids, or to access blood vessels. In medical contexts, it can be used to deliver medication or drain urine from the bladder. It's like a tiny, internal straw. π° Unlike needles, catheters are designed to stay in place for extended periods. Catheters may be used temporarily during surgery, or chronically if a patient is unable to urinate naturally. The process of inserting or removing a catheter needs to be done by a trained medical professional. There are different types of catheters for different medical uses.