A system for delivering oxygen to a gas permeable membrane oxygenator is disclosed. The system may include an integral source of gas under pressure and a source of vacuum. A first mass flow controller is connected to the source of gas upstream in the gas flow from the gas exchange device. A pressure...http://www.google.com.au/patents/US5158534?utm_source=gb-gplus-sharePatent US5158534 - Automated gas delivery system for blood gas exchange devices
