CFR › Title 21 › Part 870 › §870.325021 CFR §870.3250Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A vascular clip is an implanted extravascular device designed to occlude, by compression, blood flow in small blood vessels other than intracranial vessels.(b)Classification. Class II (performance standards).