(a) Identification. A cardiopulmonary bypass oxygenator is a device used to exchange gases between blood and a gaseous environment to satisfy the gas exchange needs of a patient during open-heart surgery.
(b) Classification. Class II (special controls). The special control for this device is the FDA guidance document entitled ``Guidance for Cardiopulmonary Bypass Oxygenators 510(k) Submissions.'' [45 FR 7907, Feb. 5, 1980, as amended at 52 FR 17737, May 11, 1987; 66 FR 18542, Apr. 10, 2001]