CFR › Title 21 › Part 870 › §870.125021 CFR §870.1250Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A percutaneous catheter is a device that is introduced into a vein or artery through the skin using a dilator and a sheath (introducer) or guide wire.(b)Classification. Class II (performance standards).