The term "oxygenators" is often used in medical settings to refer to devices that help oxygenate the blood. However, there are several other synonyms that can be used to describe these types of devices. One common synonym is "respirators," which refers to devices that help to ventilate the lungs and supply oxygen to the body. Another synonym is "oxygen deliverers," which can encompass a variety of devices such as nasal cannulas, oxygen masks, and oxygen tanks. "Aeration machines" is another synonym that can refer to devices used in water treatment plants to infuse oxygen into the water to support aquatic life. Overall, there are many different terms that can be used to describe devices or systems that provide oxygenation or aeration in various contexts.