510(k) · Cleared
ClearedDynex Micro
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Vilex, LLC · KTT Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component
Cleared on Sep 11, 2020 as substantially equivalent to K052196 (Vilex, Inc., 2005) after a 42-day review. Its family tree reaches back 3 generations to 1983. 1 later device descends from it.
- Decided
- Sep 11, 2020
- Review
- 42 days
- Class
- Class II
- Product code
- KTT
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 3 generations to K831576 (1983). 5 ancestors in all. 1 later device descends from it, 1 citing it directly.
- Root · 3 generations backK831576 OrthofixElectro-Biology, Inc. · 1983
- 2 generations backK955848 Orthofix ModulsystemOrthofix, Inc. · 1996 · Recalled
- 1 generation backK052196 Vilex X-FixVilex, Inc. · 2005
- This deviceK202143 Dynex MicroVilex, LLC · 2020
- Descendant · cites it directly · 0 of its ownK252106 External Fixation Mini Rail SystemParagon 28, Inc. · 2025
Most influential descendants
Showing 1 of 1 · See all- K252106External Fixation Mini Rail SystemParagon 28, Inc. · 2025 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −3 | K831576 | Orthofix | Electro-Biology, Inc. | 1983 | — |
| −2 | K955848 | Orthofix Modulsystem | Orthofix, Inc. | 1996 | 23 |
| −1 | K052196 | Vilex X-Fix | Vilex, Inc. | 2005 | — |
| 0 (this device) | K202143 | Dynex Micro | Vilex, LLC | 2020 | — |
| +1 | K252106 | External Fixation Mini Rail System | Paragon 28, Inc. | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1997 | 1 | 0 |
| 2005 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 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 KTT? 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 KTT device
- #1 K242861 TrueLok Elevatescore 21.3 · 14 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 |
|---|---|---|---|
| * | K052196 | Vilex X-FixSummary page 4…T (primary), JDW (secondary) Device Classification II III. Predicate Device Substantial equivalence is claimed to the following devices: • X-Fix, K052196, Vilex Inc. IV. Device Description The Dynex Micro® falls within the Vilex External Fixation System product line. The sy… | 2005 |
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 |
|---|---|---|---|
| K252106 | External Fixation Mini Rail System | 2025 | 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?
- The line of descent spans 37 years and passes through 4 companies; a new generation was cleared every 12.8 years on median.
- 1 of the 5 ancestors has a recall of any class.
- Of its descendants, K252106 (Paragon 28, Inc., 2025) has gone furthest, with 0 descendants of its own.
- 4 other devices also cite its predicate K052196.
How does its category compare?
All KTT devicesKTT Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component: FDA decisions, review times, recalls and adverse event reports over 20 years. 2020, this device’s year, is highlighted.
FDA decisions per year · KTT
10in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · KTT
88in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KTT
2in 2021
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KTT
673in 2025
MAUDE reports naming product code KTT, 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 | 9 | 55 | 2 | 45 |
| 2008 | 11 | 73 | 1 | 66 |
| 2009 | 11 | 94 | 2 | 45 |
| 2010 | 12 | 148 | 1 | 121 |
| 2011 | 10 | 157 | 0 | 196 |
| 2012 | 9 | 140 | 4 | 527 |
| 2013 | 7 | 87 | 7 | 898 |
| 2014 | 14 | 129 | 0 | 445 |
| 2015 | 12 | 60 | 0 | 401 |
| 2016 | 10 | 142 | 0 | 400 |
| 2017 | 11 | 184 | 1 | 485 |
| 2018 | 6 | 149 | 14 | 597 |
| 2019 | 8 | 110 | 3 | 800 |
| 2020 | 9 | 200 | 0 | 942 |
| 2021 | 10 | 83 | 2 | 961 |
| 2022 | 3 | 25 | 0 | 627 |
| 2023 | 7 | 29 | 0 | 554 |
| 2024 | 5 | 90 | 0 | 523 |
| 2025 | 10 | 88 | 0 | 673 |
| 2026 | 5 | 68 | 11 | — |
What is it indicated for?
The Vilex External Fixation System is intended for external fixation with the following indications:
Stabilization of Fractures & Osteotomy
Rear and Mid-foot Arthrodesis
Adult and Pediatric Leg Lengthening
Correction of Bone Deformity in Upper & Lower Extremities
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K202143 · printed Nov 6, 2026
Cite this page
510(k) Report. “K202143: Dynex Micro.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K202143
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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