CFR › Title 21 › Part 870 › §870.129021 CFR §870.1290Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A steerable catheter control system is a device that is connected to the proximal end of a steerable guide wire that controls the motion of the steerable catheter.(b)Classification. Class II (performance standards).