510(k) · Cleared
ClearedKatalyst Training System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Katalyst, Inc. · NGX Stimulator, Muscle, Powered, For Muscle Conditioning
Cleared on Feb 3, 2020 as substantially equivalent to K170903 (Djo, LLC, 2017) after a 297-day review. Its family tree reaches back 7 generations to 1988. 3 later devices descend from it.
- Decided
- Feb 3, 2020
- Review
- 297 days
- Class
- Class II
- Product code
- NGX
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 7 generations to K881114 (1988). 32 ancestors in all, the oldest K872976 (1987). 3 later devices descend from it, 3 citing it directly.
- Root · 7 generations backK881114 Empi Model 989, TensEmpi · 1988
- 6 generations backK970203 Epix VTEmpi · 1997
- 5 generations backK061650 Select Tens, Model 4600SEmpi · 2007
- 4 generations backK093324 Empi ContinuumEmpi · 2010
- 3 generations backK124016 Empi PhoenixDjo, LLC · 2013
- 2 generations backK153704 StriveDjo, LLC · 2016
- 1 generation backK170903 Compex Wireless USADjo, LLC · 2017
- This deviceK190966 Katalyst Training SystemKatalyst, Inc. · 2020
- Descendant · cites it directly · 0 of its ownK233770 Pepper EMS Training SystemPepper Interactive, Inc. · 2025
- Descendant · cites it directly · 0 of its ownK222386 VisionbodyVb Technologies AG · 2023
- Descendant · cites it directly · 0 of its ownK221498 Miha Bodytec IIMiha Bodytec GmbH · 2022
Most influential descendants
Showing 3 of 3 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −7 | K881114 | Empi Model 989, Tens | Empi | 1988 | — |
| −6 | K970203 | Epix VT | Empi | 1997 | — |
| −5 | K061650 | Select Tens, Model 4600S | Empi | 2007 | — |
| −4 | K093324 | Empi Continuum | Empi | 2010 | — |
| −3 | K124016 | Empi Phoenix | Djo, LLC | 2013 | — |
| −2 | K153704 | Strive | Djo, LLC | 2016 | — |
| −1 | K170903 | Compex Wireless USA | Djo, LLC | 2017 | — |
| 0 (this device) | K190966 | Katalyst Training System | Katalyst, Inc. | 2020 | — |
| +1 | K233770 | Pepper EMS Training System | Pepper Interactive, Inc. | 2025 | — |
| +1 | K222386 | Visionbody | Vb Technologies AG | 2023 | — |
| +1 | K221498 | Miha Bodytec II | Miha Bodytec GmbH | 2022 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1987 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 2000 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2007 | 3 | 0 |
| 2009 | 2 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2015 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2025 | 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 NGX? 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 NGX device
- #1 K250146 SofWave Systemscore 15.5 · 12 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 |
|---|---|---|---|
| * | K170903 | Compex Wireless USASummary page 4…lator, For Muscle Conditioning – 21 CFR 890.5850 Product Code NGX Review Panel: 89, Physical Medicine Regulatory Class Class II Predicate Devices Compex Wireless USA (K170903) 1 D… | 2017 |
What descends from it? (3)
3 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?
- The line of descent spans 32 years and passes through 3 companies; a new generation was cleared every 3.1 years on median.
- 1 of the 32 ancestors has a recall of any class.
- Of its descendants, K233770 (Pepper Interactive, Inc., 2025) has gone furthest, with 0 descendants of its own.
- 3 other devices also cite its predicate K170903.
How does its category compare?
All NGX devicesNGX Stimulator, Muscle, Powered, For Muscle Conditioning: FDA decisions, review times, recalls and adverse event reports over 20 years. 2020, this device’s year, is highlighted.
FDA decisions per year · NGX
15in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · NGX
93in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · NGX
2in 2013
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · NGX
15in 2025
MAUDE reports naming product code NGX, 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 | 7 | 135 | 0 | 0 |
| 2008 | 3 | 209 | 0 | 0 |
| 2009 | 4 | 132 | 0 | 0 |
| 2010 | 6 | 180 | 0 | 0 |
| 2011 | 5 | 291 | 0 | 1 |
| 2012 | 3 | 362 | 0 | 0 |
| 2013 | 6 | 269 | 2 | 1 |
| 2014 | 6 | 298 | 0 | 0 |
| 2015 | 9 | 184 | 0 | 7 |
| 2016 | 4 | 240 | 0 | 21 |
| 2017 | 10 | 108 | 0 | 2 |
| 2018 | 6 | 104 | 0 | 6 |
| 2019 | 14 | 167 | 0 | 4 |
| 2020 | 11 | 207 | 0 | 7 |
| 2021 | 12 | 256 | 0 | 5 |
| 2022 | 6 | 307 | 0 | 7 |
| 2023 | 12 | 96 | 0 | 8 |
| 2024 | 12 | 207 | 0 | 11 |
| 2025 | 15 | 93 | 0 | 15 |
| 2026 | 4 | 118 | 0 | — |
What is it indicated for?
The Katalyst Training System is an Over-The-Counter device intended to stimulate healthy muscles in order to improve or facilitate muscle performance. It is to be used by adults only. The Katalyst Training System is not intended to be used in conjunction with therapy or treatment of medical diseases or medical conditions of any kind. None of the training programs or operational parameters are designed to target injured or ailing muscles and its use on…
Read the full statement (153 words)
The Katalyst Training System is an Over-The-Counter device intended to stimulate healthy muscles in order to improve or facilitate muscle performance. It is to be used by adults only.
The Katalyst Training System is not intended to be used in conjunction with therapy or treatment of medical diseases or medical conditions of any kind. None of the training programs or operational parameters are designed to target injured or ailing muscles and its use on such muscles is contraindicated.
The Katalyst Training System's electrical impulses allow the triggering of action potentials on motoneurons of motor nerves (excitations). These excitations of motoneurons are transmitted to the muscle fibers via the motor endplate where they generate mechanical muscle fiber responses that correspond to muscle work. Depending on the parameters of the electrical impulses (pulse frequency, duration of contraction, duration of rest, total session duration), different types of muscle work can be imposed on the stimulated muscles.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K190966 · printed Nov 5, 2026
Cite this page
510(k) Report. “K190966: Katalyst Training System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K190966
Report an extraction error
Are you the manufacturer?
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