An assembly of devices that provides mechanical circulatory support during open-heart surgery, bypassing the heart to facilitate surgery on the organ. The basic function of the machine is to oxygenate the body's venous supply of blood and then pump it back into the arterial circuit. It will typically provide features such as intracardiac suction, filtration, and temperature control. This device typically consists of mains electricity (AC-powered) console with centrifugal blood pumps, oxygenators, a heat exchanger, temperature regulators, a reservoir, filters, and a defoamer. Some systems are manufactured as a single unit while others are made up of modules.