CFR › Title 21 › Part 870 › §870.505021 CFR §870.5050Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A patient care suction apparatus is a device used with an intrathoracic catheter to withdraw fluid from the chest during the recovery period following surgery.(b)Classification. Class II (performance standards).