510(k) · Cleared
ClearedLED Spectrum therapy instrument
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Shenzhenshi Sincoheren S&T Development Co., Ltd. · GEX Powered Laser Surgical Instrument
Cleared on Sep 20, 2023 as substantially equivalent to K221083 (Medmix Co., Ltd., 2022) and 1 other predicate after an 84-day review. Its family tree reaches back 14 generations to 1995.
- Decided
- Sep 20, 2023
- Review
- 84 days
- Class
- Class II
- Product code
- GEX
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 14 generations to K943450 (1995). 149 ancestors in all, the oldest K800617 (1980). No later device cites it as a predicate yet.
- Root · 14 generations backK943450 Arthrocare Arthroscopic Electrosurgery System Model 970Arthrocare Corp. · 1995
- 10 generations between
- 3 generations backK083183 Aklarus Phototherapy SystemHill Laboratories Co. · 2009
- 2 generations backK192755 Soli-Lite LG4 GalileoSilhouet-Tone Corporation · 2019
- 1 generation backK221083 Smartlux MiniMedmix Co., Ltd. · 2022
- This deviceK231894 LED Spectrum therapy instrumentShenzhenshi Sincoheren S&T Development Co., Ltd. · 2023
Show all 14 generations
- Root · 14 generations backK943450 Arthrocare Arthroscopic Electrosurgery System Model 970Arthrocare Corp. · 1995
- 13 generations backK961069 Arthrocare Urologic Multi-Electrode Electrosurgery SystemArthrocare Corp. · 1996
- 12 generations backK962445 Arthrocare Dental Electrosurgery SystemArthrocare Corp. · 1996
- 11 generations backK964849 Arthrocare Dermatologic Electrosurgery SystemArthrocare Corp. · 1997
- 10 generations backK971532 Arthrocare Electrosurgery SystemArthrocare Corp. · 1997
- 9 generations backK974521 Vnus Closure SystemVnus Medical Technologies, Inc. · 1998
- 8 generations backK982816 Vnus Closure SystemVnus Medical Technologies, Inc. · 1999
- 7 generations backK022266 Aurora SRSyneron Medical, Ltd. · 2002
- 6 generations backK030426 Omnilux RedPhoto Therapeutics Limited · 2003
- 5 generations backK042630 Revlight Skin Care SystemSkincare Technology, Inc. · 2005
- 4 generations backK060792 IllumimedPhotoactif, LLC · 2006
- 3 generations backK083183 Aklarus Phototherapy SystemHill Laboratories Co. · 2009
- 2 generations backK192755 Soli-Lite LG4 GalileoSilhouet-Tone Corporation · 2019
- 1 generation backK221083 Smartlux MiniMedmix Co., Ltd. · 2022
- This deviceK231894 LED Spectrum therapy instrumentShenzhenshi Sincoheren S&T Development Co., Ltd. · 2023
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −14 | K943450 | Arthrocare Arthroscopic Electrosurgery System Model 970 | Arthrocare Corp. | 1995 | — |
| −13 | K961069 | Arthrocare Urologic Multi-Electrode Electrosurgery System | Arthrocare Corp. | 1996 | — |
| −12 | K962445 | Arthrocare Dental Electrosurgery System | Arthrocare Corp. | 1996 | — |
| −11 | K964849 | Arthrocare Dermatologic Electrosurgery System | Arthrocare Corp. | 1997 | — |
| −10 | K971532 | Arthrocare Electrosurgery System | Arthrocare Corp. | 1997 | — |
| −9 | K974521 | Vnus Closure System | Vnus Medical Technologies, Inc. | 1998 | — |
| −8 | K982816 | Vnus Closure System | Vnus Medical Technologies, Inc. | 1999 | — |
| −7 | K022266 | Aurora SR | Syneron Medical, Ltd. | 2002 | — |
| −6 | K030426 | Omnilux Red | Photo Therapeutics Limited | 2003 | — |
| −5 | K042630 | Revlight Skin Care System | Skincare Technology, Inc. | 2005 | — |
| −4 | K060792 | Illumimed | Photoactif, LLC | 2006 | — |
| −3 | K083183 | Aklarus Phototherapy System | Hill Laboratories Co. | 2009 | — |
| −2 | K192755 | Soli-Lite LG4 Galileo | Silhouet-Tone Corporation | 2019 | — |
| −1 | K221083 | Smartlux Mini | Medmix Co., Ltd. | 2022 | — |
| 0 (this device) | K231894 | LED Spectrum therapy instrument | Shenzhenshi Sincoheren S&T Development Co., Ltd. | 2023 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1980 | 1 | 0 |
| 1985 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 10 | 0 |
| 1996 | 12 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 0 |
| 2002 | 12 | 0 |
| 2003 | 10 | 0 |
| 2004 | 2 | 0 |
| 2005 | 5 | 0 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2013 | 2 | 0 |
| 2016 | 1 | 0 |
| 2018 | 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 GEX? 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 GEX device
- #1 K222064 The Alma Soprano Titaniumscore 38.1 · 24 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
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.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K221083 | Smartlux MiniSummary page 7…ser interface software allows the operator to access and control all device functions. 6. Predicate Device Identification Primary Device: 510(k) Number: K221083 Product Name: Phototherapy Unit Manufacturer: MEDMIX Co., Ltd. Predicate Device: 510(k) Number: K180900… | 2022 |
| * | K180900 | LED Light Therapy DeviceSummary page 7…Primary Device: 510(k) Number: K221083 Product Name: Phototherapy Unit Manufacturer: MEDMIX Co., Ltd. Predicate Device: 510(k) Number: K180900 Product Name: LED Light Therapy Device Model: KN-7000C2 Manufacturer: Xuzhou Kernel Medical Equipment Co., Ltd.… | 2018 |
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 28 years and passes through 10 companies; a new generation was cleared every 1.2 years on median.
- 4 of the 149 ancestors have a recall of any class.
- 1 other device also cites its predicate K221083.
How does its category compare?
All GEX devicesGEX Powered Laser Surgical Instrument: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · GEX
83in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · GEX
90in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · GEX
3in 2024
Class I (1 since 2007) Class II/III not classified
Adverse event reports per year · GEX
2,720in 2025
MAUDE reports naming product code GEX, 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 | 73 | 79 | 9 | 342 |
| 2008 | 107 | 86 | 2 | 232 |
| 2009 | 69 | 100 | 0 | 209 |
| 2010 | 50 | 96 | 4 | 1,711 |
| 2011 | 41 | 83 | 18 | 3,024 |
| 2012 | 45 | 118 | 5 | 2,000 |
| 2013 | 46 | 144 | 3 | 2,236 |
| 2014 | 61 | 147 | 6 | 2,036 |
| 2015 | 47 | 112 | 0 | 2,099 |
| 2016 | 51 | 114 | 1 | 2,585 |
| 2017 | 67 | 90 | 5 (1) | 2,977 |
| 2018 | 51 | 78 | 5 | 3,525 |
| 2019 | 41 | 88 | 6 | 2,709 |
| 2020 | 52 | 90 | 1 | 2,183 |
| 2021 | 53 | 123 | 0 | 3,465 |
| 2022 | 60 | 152 | 0 | 2,288 |
| 2023 | 52 | 87 | 6 | 2,337 |
| 2024 | 82 | 90 | 3 | 2,187 |
| 2025 | 83 | 90 | 0 | 2,720 |
| 2026 | 57 | 90 | 2 | — |
What is it indicated for?
The LED Spectrum therapy instrument includes five models, which are PDT-I, PDT-J, PDT-K, PDT-L, PDT-M. PDT-I: Blue (420±10nm) is generally indicated to treat dermatological conditions and specifically indicated to treat moderate inflammatory acne vulgaris. Combination of Red (630±10nm) and Infrared (825±10nm) is intended to emit energy in the red and infrared region of the spectrum for use in dermatology for the treatment of periorbital wrinkles.…
Read the full statement (305 words)
The LED Spectrum therapy instrument includes five models, which are PDT-I, PDT-J, PDT-K, PDT-L, PDT-M.
PDT-I:
Blue (420±10nm) is generally indicated to treat dermatological conditions and specifically indicated to treat moderate inflammatory acne vulgaris.
Combination of Red (630±10nm) and Infrared (825±10nm) is intended to emit energy in the red and infrared region of the spectrum for use in dermatology for the treatment of periorbital wrinkles.
Combination of Red (630±10nm) and Blue (420±10nm) is indicated for the treatment of mild to moderate inflammatory acne.
PDT-J:
Combination of Yellow (590±10nm) and Infrared (825±10nm) is intended to emit energy in the IR and visible spectrum to provide topical heating for the purpose of elevating tissue temperature; for the temporary relief of minor muscle and joint pain, arthritis and muscle spasm; relieving stiffness; promoting the relaxation of muscle tissue; and to temporarily increase local blood circulation where applied.
Combination of Red (630±10nm) and Infrared (825±10nm) is intended to emit energy in the red and infrared region of the spectrum for use in dermatology for the treatment of periorbital wrinkles.
PDT-K:
Blue (420±10nm) is generally indicated to treat dermatological conditions and specifically indicated to treat moderate inflammatory acne vulgaris.
Combination of Red (630±10nm) and Blue (420±10nm) is indicated for the treatment of mild to moderate inflammatory acne.
PDT-L:
Combination of Red (630±10nm) and Infrared (825±10nm) is intended to emit energy in the red and infrared region of the spectrum for use in dermatology for the treatment of periorbital wrinkles.
PDT-M:
Combination of Yellow (590±10nm) and Infrared (825±10nm) is intended to emit energy in the IR and visible spectrum to provide topical heating for the purpose of elevating tissue temperature; for the temporary relief of minor muscle and joint pain, arthritis and muscle spasm; relieving stiffness; promoting the relaxation of muscle tissue; and to temporarily increase local blood circulation where applied.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K231894 · printed Nov 6, 2026
Cite this page
510(k) Report. “K231894: LED Spectrum therapy instrument.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K231894
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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