A device designed to perform gas exchange by bubbling oxygen from tanks or from a central hospital supply through a column of blood. It typically includes a defoamer to break up the bubbles caused by the oxygenation process, and an arterial reservoir that collects defoamed blood; a gas flowmeter and a filtering system are usually placed in the oxygen line. This oxygenator is mostly used in short-term procedures as lengthy operation of the device could increase the risk of gas emboli, blood damage, and protein denaturization. This is a single-use device.