A kidney bowl is a shallow basin with a kidney-shaped footprint and sloping walls generally used for holding soiled dressings and other medical waste. When washing out a small wound, for example, sometimes the wash water is applied from above with a kidney bowl held underneath to catch the runoff. The shape of the bowl allows it to be held against the patient's body to catch any falling fluids or debris.
Made from plastic this kidney bowl is designed to be disposable.