510(k) · Cleared
ClearedSequel External Fixation Device
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Sequel Medical, Inc. · KTT Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component
Cleared on Jan 19, 2021 as substantially equivalent to K190486 (S.H.Pitkar Orthotools Pvt., Ltd., 2019) and 2 other predicates after a 116-day review. Its family tree reaches back 14 generations to 1996. 1 later device descends from it.
- Decided
- Jan 19, 2021
- Review
- 116 days
- Class
- Class II
- Product code
- KTT
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 14 generations to K962616 (1996). 67 ancestors in all, the oldest K792022 (1979). 1 later device descends from it, 1 citing it directly.
- Root · 14 generations backK962616 Synthes Dorsal Distal Radius Plate (DDRP) SystemSynthes (Usa) · 1996
- 10 generations between
- 3 generations backK143125 Orthofix True Lok Hexapod System VI.3Orthofix Srl · 2014
- 2 generations backK152171 Orthofix TL-HEX True Lok Hexapod System (TL-HEX) V1.4Orthofix Srl · 2015
- 1 generation backK170650 Orthofix TrueLok Hexapod System (TL-HEX) V2.0Orthofix Srl · 2017 · Recalled
- This deviceK202833 Sequel External Fixation DeviceSequel Medical, Inc. · 2021
- Descendant · cites it directly · 0 of its ownK253291 Excelsior SystemBlue Ocean Global · 2026
Show all 14 generations
- Root · 14 generations backK962616 Synthes Dorsal Distal Radius Plate (DDRP) SystemSynthes (Usa) · 1996
- 13 generations backK982732 Synthes (Usa) Distal Radius Plate System (DRPS)Synthes · 1998
- 12 generations backK023007 Distal Radius Fracture Repair SystemHand Innovations, Inc. · 2002
- 11 generations backK030198 Hand Innovations, Inc. Distal Radius Fracture Repair SystemHand Innovations, Inc. · 2003
- 10 generations backK032705 Distal Radius Fracture Repair SystemHand Innovations, Inc. · 2003
- 9 generations backK050932 Distal Volar Radius Anatomical Plate SystemHand Innovations, Inc. · 2005 · Recalled
- 8 generations backK051735 Peri-Loc Locking Bone Plates and Locking Bone Screws for the Upper…Smith & Nephew, Inc. · 2005
- 7 generations backK071563 Peri-Loc Periarticular Locked Plating SystemSmith & Nephew, Inc. · 2007
- 6 generations backK090675 Smith & Nephew, Inc. VLP Foot Plating, Screw System and AccessoriesSmith & Nephew, Inc. · 2009
- 5 generations backK093047 Smith & Nephew Circular Fixation SystemSmith & Nephew, Inc. · 2010 · Recalled
- 4 generations backK141078 Orthofix TL-Hex True Lok Hexalobe System (TL-Hex)Orthofix Srl · 2014
- 3 generations backK143125 Orthofix True Lok Hexapod System VI.3Orthofix Srl · 2014
- 2 generations backK152171 Orthofix TL-HEX True Lok Hexapod System (TL-HEX) V1.4Orthofix Srl · 2015
- 1 generation backK170650 Orthofix TrueLok Hexapod System (TL-HEX) V2.0Orthofix Srl · 2017 · Recalled
- This deviceK202833 Sequel External Fixation DeviceSequel Medical, Inc. · 2021
Most influential descendants
Showing 1 of 1 · See all- K253291Excelsior SystemBlue Ocean Global · 2026 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −14 | K962616 | Synthes Dorsal Distal Radius Plate (DDRP) System | Synthes (Usa) | 1996 | — |
| −13 | K982732 | Synthes (Usa) Distal Radius Plate System (DRPS) | Synthes | 1998 | — |
| −12 | K023007 | Distal Radius Fracture Repair System | Hand Innovations, Inc. | 2002 | — |
| −11 | K030198 | Hand Innovations, Inc. Distal Radius Fracture Repair System | Hand Innovations, Inc. | 2003 | — |
| −10 | K032705 | Distal Radius Fracture Repair System | Hand Innovations, Inc. | 2003 | — |
| −9 | K050932 | Distal Volar Radius Anatomical Plate System | Hand Innovations, Inc. | 2005 | 1 |
| −8 | K051735 | Peri-Loc Locking Bone Plates and Locking Bone Screws for the Upper Extremity | Smith & Nephew, Inc. | 2005 | — |
| −7 | K071563 | Peri-Loc Periarticular Locked Plating System | Smith & Nephew, Inc. | 2007 | — |
| −6 | K090675 | Smith & Nephew, Inc. VLP Foot Plating, Screw System and Accessories | Smith & Nephew, Inc. | 2009 | — |
| −5 | K093047 | Smith & Nephew Circular Fixation System | Smith & Nephew, Inc. | 2010 | 1 |
| −4 | K141078 | Orthofix TL-Hex True Lok Hexalobe System (TL-Hex) | Orthofix Srl | 2014 | — |
| −3 | K143125 | Orthofix True Lok Hexapod System VI.3 | Orthofix Srl | 2014 | — |
| −2 | K152171 | Orthofix TL-HEX True Lok Hexapod System (TL-HEX) V1.4 | Orthofix Srl | 2015 | — |
| −1 | K170650 | Orthofix TrueLok Hexapod System (TL-HEX) V2.0 | Orthofix Srl | 2017 | 1 |
| 0 (this device) | K202833 | Sequel External Fixation Device | Sequel Medical, Inc. | 2021 | — |
| +1 | K253291 | Excelsior System | Blue Ocean Global | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1983 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 3 | 0 |
| 2005 | 2 | 0 |
| 2006 | 3 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2019 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2026 | 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 21.4 · 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? (3)
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 |
|---|---|---|---|
| * | K190486 | Pitkar External Fixation SystemSummary page 5…Page 1 K202833 Page 2 of 6 3. PREDICATE DEVICES Predicate Device: K190486 Pitkar External Fixation System S H Pitkar Orthotools Pvt Ltd… | 2019 |
| * | K071394 | Modification to:Sbi RingfixSummary page 5…ols Pvt Ltd. Plot No. EL 32, J Block, MIDC Bhosari Pune, IN 411026 Secondary Predicate Devices: K071394 SBi RingFIXTM System Small Bone Innovations Inc.… | 2007 |
| * | K170650 | Orthofix TrueLok Hexapod System (TL-HEX) V2.0Summary page 5…Bone Innovations Inc. 505 Park Ave., 14th Floor New York, NY 10022 K170650 Orthofix TrueLok Hexapod System (TL-HEX) V2.0 Orthofix Srl… | 2017 |
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 |
|---|---|---|---|
| K253291 | Excelsior System | 2026 | 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 25 years and passes through 6 companies; a new generation was cleared every 1.6 years on median.
- 20 of the 67 ancestors have a recall of any class.
- Of its descendants, K253291 (Blue Ocean Global, 2026) has gone furthest, with 0 descendants of its own.
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. 2021, 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 Sequel Ring Fixation System is indicated for both adults and pediatric patients for:
1. Open and closed fracture fixation
2. Pseudoarthrosis or non-union of long bones
3. Limb lengthening by epiphyseal or metaphyseal distraction
4. Correction of bony or soft tissue deformities
5. Correction of segmental or nonsegmental bony or soft tissue defects
6. Post-Traumatic joint contracture which has resulted in loss of range of motion
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/K202833 · printed Nov 5, 2026
Cite this page
510(k) Report. “K202833: Sequel External Fixation Device.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K202833
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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