510(k) · Cleared
ClearedTrez_HD
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Excel-Tech Ltd. (Xltek) · GWQ Full-Montage Standard Electroencephalograph
Cleared on Feb 14, 2014 as substantially equivalent to K042150 (Excel Tech., Ltd., 2004) after a 287-day review. Its family tree reaches back 1 generation to 2004. 1 later device descends from it.
- Decided
- Feb 14, 2014
- Review
- 287 days
- Class
- Class II
- Product code
- GWQ
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K042150 (2004). 1 later device descends from it, 1 citing it directly.
Most influential descendants
Showing 1 of 1 · See all- K162595Trex_HDNatus Medical Incorporated Dba Excel-Tech Ltd. (Xltek) · 2016 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K042150 | Xltek Trex Model#10309 | Excel Tech., Ltd. | 2004 | — |
| 0 (this device) | K131266 | Trez_HD | Excel-Tech Ltd. (Xltek) | 2014 | — |
| +1 | K162595 | Trex_HD | Natus Medical Incorporated Dba Excel-Tech Ltd. (Xltek) | 2016 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2016 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in GWQ? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new GWQ device
- #1 K260455 New Wave Systemscore 13.7 · 10 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K042150 | Xltek Trex Model#10309Summary page 1…Comn.Namel Electroencephalograph Classification Name Full-montage standard electroencephalograph Productdea GWQ, OLV Device Class7 11 Predicate Device: Trex (K042150) Prior Submissions for the same device: We reference K042150 as the predicate device only. There are no other submissions for… | 2004 |
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K162595 | Trex_HD | 2016 | 0 |
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
How does its category compare?
All GWQ devicesGWQ Full-Montage Standard Electroencephalograph: FDA decisions, review times, recalls and adverse event reports over 20 years. 2014, this device’s year, is highlighted.
FDA decisions per year · GWQ
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · GWQ
137in 2023
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · GWQ
1in 2020
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · GWQ
13in 2025
MAUDE reports naming product code GWQ, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 1 | — | 5 | 11 |
| 2008 | 2 | — | 2 | 8 |
| 2009 | 0 | — | 1 | 7 |
| 2010 | 3 | 73 | 1 | 12 |
| 2011 | 4 | 220 | 0 | 6 |
| 2012 | 4 | 208 | 0 | 9 |
| 2013 | 2 | — | 0 | 4 |
| 2014 | 2 | — | 0 | 7 |
| 2015 | 3 | 276 | 2 | 13 |
| 2016 | 3 | 50 | 0 | 28 |
| 2017 | 5 | 181 | 0 | 17 |
| 2018 | 8 | 150 | 0 | 15 |
| 2019 | 0 | — | 2 | 16 |
| 2020 | 6 | 216 | 1 | 30 |
| 2021 | 0 | — | 0 | 20 |
| 2022 | 3 | 216 | 0 | 16 |
| 2023 | 6 | 137 | 0 | 20 |
| 2024 | 1 | — | 0 | 17 |
| 2025 | 0 | — | 0 | 13 |
| 2026 | 2 | — | 1 | — |
What is it indicated for?
The Trex HD is an Electroencephalograph intended to be used to acquire, display, store and archive electroencephalographic signals, intended for electroencephalographic (EEG) or level 1-2 polysomnographic (PSG) recordings. The Trex HD amplifier is designed to be used with Natus NeuroWorksTM or Natus SleepWorksTM software.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K131266 · printed Nov 6, 2026
Cite this page
510(k) Report. “K131266: Trez_HD.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K131266
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026