21 CFR 880.6970
§ 880.6970 Liquid crystal vein locator.
United States · 21 CFR — Food and Drugs · Status: effective
Cite this
- Citation
- 21 CFR 880.6970, § 880.6970 Liquid crystal vein locator, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/90616
- Permanent ID
ys:prov:90616@1- SHA-256
eef3bbaf4f3d4a47d90c45d8dd045bbee273e351451e6af868642da4694cafd1
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
(a) Identification. A liquid crystal vein locator is a device used to indicate the location of a vein by revealing variations in the surface temperature of the skin by displaying the color changes of heat sensitive liquid crystals (cholesteric esters).
(b) Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter, subject to the limitations in § 880.9.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.