510(k) · Cleared
ClearedSynergy LT
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Oxford Instruments, Plc. · GWF Stimulator, Electrical, Evoked Response
Cleared on Jul 16, 1998 after an 87-day review. FDA’s file for it is a 510(k) statement, which names no predicate. 42 later devices descend from it.
- Decided
- Jul 16, 1998
- Review
- 87 days
- Class
- Class II
- Product code
- GWF
- Recalls
- None
- Predicates
- 0
42 later devices descend from it, 3 citing it directly.
- This deviceK981405 Synergy LTOxford Instruments, Plc. · 1998
- Descendant · cites it directly · 40 of its ownK073415 Nemus System; Nemus PC PeripheralEb Neuro S.P.A. · 2008
- Descendant · cites it directly · 34 of its ownK102610 Focus Emg DeviceTeleemg, LLC USA · 2011
- Descendant · 2 generations on · 30 of its ownK112052 Carefusion Nicolet EdxCarefusion 209, Inc. · 2012
- Descendant · 3 generations on · 12 of its ownK162383 Cadwell Sierra Summit, Cadwell Sierra AscentCadwell Industries, Inc. · 2017
- Descendant · 3 generations on · 12 of its ownK120979 Carefusion Nicolet EdxCarefusion 209, Inc. · 2012
Showing 5 of 42 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 42 · See all- K073415Nemus System; Nemus PC PeripheralEb Neuro S.P.A. · 2008 · cites it directly40descendants
- K102610Focus Emg DeviceTeleemg, LLC USA · 2011 · cites it directly34descendants
- K112052Carefusion Nicolet EdxCarefusion 209, Inc. · 2012 · 2 generations on30descendants
- K162383Cadwell Sierra Summit, Cadwell Sierra AscentCadwell Industries, Inc. · 2017 · 3 generations on12descendants
- K120979Carefusion Nicolet EdxCarefusion 209, Inc. · 2012 · 3 generations on12descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K981405 | Synergy LT | Oxford Instruments, Plc. | 1998 | — |
| +1 | K073415 | Nemus System; Nemus PC Peripheral | Eb Neuro S.P.A. | 2008 | — |
| +1 | K102610 | Focus Emg Device | Teleemg, LLC USA | 2011 | — |
| +2 | K112052 | Carefusion Nicolet Edx | Carefusion 209, Inc. | 2012 | — |
| +3 | K162383 | Cadwell Sierra Summit, Cadwell Sierra Ascent | Cadwell Industries, Inc. | 2017 | — |
| +3 | K120979 | Carefusion Nicolet Edx | Carefusion 209, Inc. | 2012 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 3 | 0 |
| 2017 | 4 | 0 |
| 2018 | 1 | 0 |
| 2019 | 3 | 0 |
| 2020 | 1 | 0 |
| 2022 | 5 | 0 |
| 2023 | 5 | 0 |
| 2024 | 6 | 0 |
| 2025 | 1 | 0 |
| 2026 | 5 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA 510(k) statement (indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in GWF? 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 GWF device
- #1 K263010 ISIS Headboxes, ISIS Neurostimulator, ISIS…score 17.5 · 19 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA’s file for it is a 510(k) statement, which names no predicate.
What descends from it? (42)
See all 423 later devices cite it directly; ranked here by how many devices descend from each in turn.
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?
- Of its descendants, K073415 (Eb Neuro S.P.A., 2008) has gone furthest, with 40 descendants of its own.
How does its category compare?
All GWF devicesGWF Stimulator, Electrical, Evoked Response: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · GWF
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · GWF
92in 2024
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · GWF
2so far in 2026, the most since 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · GWF
1,034in 2025
MAUDE reports naming product code GWF, 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 | 3 | 69 | 0 | 2 |
| 2008 | 2 | — | 0 | 1 |
| 2009 | 5 | 178 | 0 | 1 |
| 2010 | 3 | 269 | 0 | 4 |
| 2011 | 2 | — | 0 | 10 |
| 2012 | 4 | 230 | 1 | 44 |
| 2013 | 3 | 174 | 0 | 89 |
| 2014 | 1 | — | 0 | 25 |
| 2015 | 2 | — | 1 | 22 |
| 2016 | 1 | — | 0 | 20 |
| 2017 | 3 | 169 | 0 | 60 |
| 2018 | 0 | — | 0 | 58 |
| 2019 | 1 | — | 0 | 94 |
| 2020 | 1 | — | 0 | 65 |
| 2021 | 2 | — | 0 | 55 |
| 2022 | 2 | — | 0 | 45 |
| 2023 | 2 | — | 0 | 150 |
| 2024 | 4 | 92 | 0 | 854 |
| 2025 | 1 | — | 0 | 1,034 |
| 2026 | 3 | 125 | 2 | — |
What is it indicated for?
The SYNERGY LT is a 2 channel electromyograph which provides
facilities for EMG and Evoked Potentials testing for a range of
clinical applications.
SYNERGY LT is designed to enable reliable recording, display and
documentation of electrophysiological information from the human
nervous and muscular system in a clinical environment.
Indications for use read by OCR from a scanned FDA 510(k) statement, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K981405 · printed Nov 5, 2026
Cite this page
510(k) Report. “K981405: Synergy LT.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K981405
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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