ISO 7199:2016 specifies requirements for sterile, single-use, extracorporeal blood-gas exchangers (oxygenators) intended for supply of oxygen to, and removal of carbon dioxide from, the blood of humans. ISO 7199:2016 also applies to heat exchangers and arterial filters that are integral parts of the oxygenator. ISO 7199:2016 also applies to external equipment unique to the use of the oxygenator. ISO 7199:2016 does not apply to - implanted oxygenators, - liquid oxygenators, - extracorporeal circuits (blood tubing), - separate heat exchangers, - separate ancillary devices, and - separate arterial line filter.