membrane oxygenator

noun

: a device that adds oxygen and removes carbon dioxide from the blood of a patient especially during cardiac surgery and extracorporeal membrane oxygenation and that consists of a semipermeable membrane which allows for the exchange of respiratory gases

Artificial pumps will force the blood through Jessica's eight-pound body, and a complex contraption called a membrane oxygenator will pull carbon dioxide out of her blood, exchanging it for oxygen.

—Perri Klass, Discover