# K191501: PALLAS 308/311 Solid-State UV Laser System

- Pathway: 510(k) (Special)
- Applicant: Laseroptek Co., Ltd.
- Decided: Jan 3, 2020 after 211 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: 7 generations back to K885026 (1989). 23 ancestors in all.
1 later device descends 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)
- K172639: PALLAS 308/311 Solid-State UV Laser System, Laseroptek Co., Ltd. (2017) Summary page 4.

## Most influential descendants
- K223588: PALLAS Premium (2023), 0 descendants of its own

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

Source page: https://510kreport.com/device/K191501
Methodology: https://510kreport.com/methodology