# K172639: PALLAS 308/311 Solid-State UV Laser System

- Pathway: 510(k) (Traditional)
- Applicant: Laseroptek Co., Ltd.
- Decided: Nov 3, 2017 after 63 days
- Product code: GEX (Powered Laser Surgical Instrument)
- Device class: 2
- Regulation: 21 CFR 878.4810
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 6 generations back to K885026 (1989). 22 ancestors in all.
2 later devices descend from it; 1 cites it directly.
0 of 25 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K020847: Xtrac Excimer Laser System, Model AL7000, Photo Medex, Inc. (2002) Summary page 4.
- K062963: Pharos Excimer Laser System, Model EX-308, Ra Medical Systems,Inc (2007) Summary page 4.

## Most influential descendants
- K191501: PALLAS 308/311 Solid-State UV Laser System (2020), 1 descendant of its own
- K223588: PALLAS Premium (2023), 0 descendants of its own

## Indications for use
The indications for use are UVB phototherapy of psoriasis, vitiligo, atopic dermatitis, and leukoderma of affected skin.

Source page: https://510kreport.com/device/K172639
Methodology: https://510kreport.com/methodology