# K172273: 308nm Excimer System

- Pathway: 510(k) (Traditional)
- Applicant: Chongqing Peninsula Medical Technology Co., Ltd.
- Decided: Jul 30, 2018 after 367 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: 17 generations back to K943450 (1995). 224 ancestors in all.
5 later devices descend from it; 4 cite it directly.
0 of 230 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K150752: GME ExSys 308, Gme (German Medical Engineering) GmbH (2015) Summary page 4.

## Most influential descendants
- K192642: 308nm Excimer System (2020), 2 descendants of its own
- K200971: 308nm Excimer System (2020), 1 descendant of its own
- K244022: 308nm UV Phototherapy System (UV-K); 308nm UV Phototherapy System (UV-X); 308nm UV Phototherapy System (UV-Y); 308nm UV Phototherapy System (UV-Z) (2025), 0 descendants of its own
- K242977: 308nm Excimer Phototherapy Device (CN-308E, KN-4003B3, KN-4003B4, KN-5000C KN-5000D, KN-5000H, KN-5000K) (2025), 0 descendants of its own
- K202827: 308nm Excimer UV-light Skin Therapy System (2020), 0 descendants of its own

## Indications for use
The 308nm Excimer System is intended to be used for the treatment of psoriasis and vitiligo. It is to be used on intact skin only.

Source page: https://510kreport.com/device/K172273
Methodology: https://510kreport.com/methodology