510(k) Report

510(k) · Cleared

Cleared

Flix-Ems

K181419510(k) TraditionalCleared May 14, 2019348-day reviewClass II21 CFR 890.5850

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Casgarum Investment, S.L. · NGX Stimulator, Muscle, Powered, For Muscle Conditioning

Cleared on May 14, 2019 as substantially equivalent to K133225 (Fit-Pro Kft, Ltd., 2014) and 1 other predicate after a 348-day review. Its family tree reaches back 7 generations to 1988.

Decided
May 14, 2019
Review
348 days
Class
Class II
Product code
NGX
Recalls
None
Predicates
2

Its longest line of descent runs back 7 generations to K881114 (1988). 33 ancestors in all, the oldest K872976 (1987). No later device cites it as a predicate yet.

Other ancestors, by year cleared 2014: 1 other ancestor2015: 1 other ancestor2002: 2 other ancestors2013: 1 other ancestor2009: 2 other ancestors1994: 1 other ancestor2012: 1 other ancestor2007: 3 other ancestors1998: 1 other ancestor2005: 2 other ancestors1996: 2 other ancestors2004: 1 other ancestor2003: 1 other ancestor2000: 1 other ancestor1997: 1 other ancestor1993: 2 other ancestors1992: 2 other ancestors1987: 1 other ancestorK881114 · Empi Model 989, Tens · Empi · 1988K970203 · Epix VT · Empi · 1997K061650 · Select Tens, Model 4600S · Empi · 2007K093324 · Empi Continuum · Empi · 2010K124016 · Empi Phoenix · Djo, LLC · 2013K153704 · Strive · Djo, LLC · 2016K170903 · Compex Wireless USA · Djo, LLC · 201719851990199520002005201020152020
Other ancestors, by generation 1 generation back: 1 other ancestor2 generations back: 2 other ancestors3 generations back: 3 other ancestors4 generations back: 4 other ancestors5 generations back: 5 other ancestors6 generations back: 11 other ancestors K170903 · Compex Wireless USA · Djo, LLC · 2017K153704 · Strive · Djo, LLC · 2016K124016 · Empi Phoenix · Djo, LLC · 2013K093324 · Empi Continuum · Empi · 2010K061650 · Select Tens, Model 4600S · Empi · 2007K970203 · Epix VT · Empi · 1997K881114 · Empi Model 989, Tens · Empi · 1988−50
  1. Root · 7 generations backK881114 Empi Model 989, TensEmpi · 1988
  2. 6 generations backK970203 Epix VTEmpi · 1997
  3. 5 generations backK061650 Select Tens, Model 4600SEmpi · 2007
  4. 4 generations backK093324 Empi ContinuumEmpi · 2010
  5. 3 generations backK124016 Empi PhoenixDjo, LLC · 2013
  6. 2 generations backK153704 StriveDjo, LLC · 2016
  7. 1 generation backK170903 Compex Wireless USADjo, LLC · 2017
  8. This deviceK181419 Flix-EmsCasgarum Investment, S.L. · 2019
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
−7K881114Empi Model 989, TensEmpi1988—
−6K970203Epix VTEmpi1997—
−5K061650Select Tens, Model 4600SEmpi2007—
−4K093324Empi ContinuumEmpi2010—
−3K124016Empi PhoenixDjo, LLC2013—
−2K153704StriveDjo, LLC2016—
−1K170903Compex Wireless USADjo, LLC2017—
0 (this device)K181419Flix-EmsCasgarum Investment, S.L.2019—

Other ancestors by year cleared

Year clearedDevicesWith a Class I recall
198710
199220
199320
199410
199620
199710
199810
200010
200220
200310
200410
200520
200730
200920
201210
201310
201410
201510
FIG. 1 — Lineage of K181419, 1988–2019Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

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. #1 K250146 SofWave Systemscore 15.5 · 12 generations · no Class I recall
  2. #2 Held for the reportin the report
  3. #3 Held for the reportin the report
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What was it cleared against? (2)

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.

TypeNumberDeviceApplicantDecidedRecalls
*K133225E-Fit EF-1280 Ems Machine
Summary page 4
…: Stimulator, muscle, powered, for muscle conditioning (21 CFR 890.5850) PREDICATE DEVICE(S): E-Fit EF-1280 (K133225) Compex Wireless USA (K170903) DEVICE DESCRIPTION: The proposed device is an electro-medical d…
Fit-Pro Kft, Ltd.2014—
*K170903Compex Wireless USA
Summary page 4
…ing (21 CFR 890.5850) PREDICATE DEVICE(S): E-Fit EF-1280 (K133225) Compex Wireless USA (K170903) DEVICE DESCRIPTION: The proposed device is an electro-medical device designed and manufactured for sports and fitness activity…
Djo, LLC2017—

Also cleared against K133225: 6 other devices →

What descends from it?

No later submission names this one as a predicate yet.

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 31 years and passes through 3 companies; a new generation was cleared every 3.1 years on median.
  • 1 of the 33 ancestors has a recall of any class.
  • 6 other devices also cite its predicate K133225.

How does its category compare?

All NGX devices

NGX Stimulator, Muscle, Powered, For Muscle Conditioning: FDA decisions, review times, recalls and adverse event reports over 20 years. 2019, this device’s year, is highlighted.

FDA decisions per year · NGX

15in 2025

2007: 72008: 32009: 42010: 62011: 52012: 32013: 62014: 62015: 92016: 42017: 102018: 62019: 142020: 112021: 122022: 62023: 122024: 122025: 152026 (partial year): 4
2007high 15 (2025) · low 3 (2008)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · NGX

93in 2025

2007: 135 days median2008: 209 days median2009: 132 days median2010: 180 days median2011: 291 days median2012: 362 days median2013: 269 days median2014: 298 days median2015: 184 days median2016: 240 days median2017: 108 days median2018: 104 days median2019: 167 days median2020: 207 days median2021: 256 days median2022: 307 days median2023: 96 days median2024: 207 days median2025: 93 days median2026 (partial year): 118 days median
2007high 362 (2012) · low 93 (2025)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · NGX

2in 2013

2013: 2
2007high 2 (2013) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · NGX

15in 2025

2011: 12013: 12015: 72016: 212017: 22018: 62019: 42020: 72021: 52022: 72023: 82024: 112025: 15
2007high 21 (2016) · low 0 (2007)2025

MAUDE reports naming product code NGX, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
2007713500
2008320900
2009413200
2010618000
2011529101
2012336200
2013626921
2014629800
2015918407
20164240021
20171010802
2018610406
20191416704
20201120707
20211225605
2022630707
2023129608
202412207011
20251593015
202641180—

What is it indicated for?

FLIX-EMS device is intended to stimulate healthy muscles in order to improve or facilitate muscle performance. It is to be used by adults only. FLIX-EMS is not intended for adjunctive therapy in the treatment of medical diseases and conditions of any kind. None of the FLIX-EMS stimulation programs are designed for injured or disease afflicted muscles. Its use on such muscles is contraindicated. The work imposed on the muscles by the FLIX-EMS programs is…

Read the full statement (153 words)

FLIX-EMS device is intended to stimulate healthy muscles in order to improve or facilitate muscle performance. It is to be used by adults only.

FLIX-EMS is not intended for adjunctive therapy in the treatment of medical diseases and conditions of any kind. None of the FLIX-EMS stimulation programs are designed for injured or disease afflicted muscles. Its use on such muscles is contraindicated. The work imposed on the muscles by the FLIX-EMS programs is definitely not suitable for rehabilitation and physiotherapy.

FLIX-EMS electrical impulses allow the triggering of action potentials on motoneurones of motor nerves (excitations). These excitations of motoneurones 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 read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.

Cite this page

510(k) Report. “K181419: Flix-Ems.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K181419

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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