A urinal tube is commonly called a catheter. More specifically, if it's a tube inserted into the bladder to drain urine, it is often referred to as a Foley catheter.
Here's a more detailed breakdown:
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Catheter: This is the general term for a tube inserted into the body to drain fluids, and is the most accurate and straightforward answer.
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Foley Catheter: This is a specific type of catheter that's indwelling, meaning it stays inside the body for a period of time. It's inserted through the urethra into the bladder to drain urine. A balloon at the tip of the catheter is inflated with sterile water after insertion to hold it in place.
While other terms might be used in specific contexts, "catheter" and, more precisely, "Foley catheter" are the most accurate and commonly used names for a urinal tube used for draining urine from the bladder.
