# K191571: UV Radiation Treatment System

- Pathway: 510(k) (Traditional)
- Applicant: Xuzhou Yongkang Electronic Science Technology Co., Ltd.
- Decided: Feb 6, 2020 after 237 days
- Product code: FTC (Light, Ultraviolet, Dermatological)
- Device class: 2
- Regulation: 21 CFR 878.4630
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K132643 (2014). 2 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K181805: UV Phototherapy, Xuzhou Kernel Medical Equipment Co., Ltd. (2019) Summary page 4.

## Most influential descendants
- K242908: UV Phototherapy Device (Group A: SQ308PCHFD, SQ308PCQFD, SQ308PCPFD, SQ308PCNFD, SQ308PCMFD); UV Phototherapy Device (Group B: SQ308PHTFF, SQ308PHSFF, SQ308PHRFF, SQ308PHZFG, SQ308PPUFF, SQ308PPVFF, SQ308PPWFG) (2024), 0 descendants of its own

## Indications for use
The UV Radiation Treatment System models YK-6000A, YK-6000A-T, YK-6000B, andYK-6000B-T, are intended for use under the direction of a physician, for the treatment of vitiligo, psoriasis, and eczema. The devices are intended for treatment of these conditions on Fitzpatrick Skin Types (I-VI).

Source page: https://510kreport.com/device/K191571
Methodology: https://510kreport.com/methodology