510(k) · Cleared
ClearedPosterior Cervical Spine System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Double Medical Technology, Inc. · NKG Posterior Cervical Screw System
Cleared on Nov 22, 2023 as substantially equivalent to K210449 (Medtronic, 2021) and 1 other predicate after a 58-day review. Its family tree reaches back 17 generations to 2001. 1 later device descends from it.
- Decided
- Nov 22, 2023
- Review
- 58 days
- Class
- Class II
- Product code
- NKG
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 17 generations to K003155 (2001). 169 ancestors in all, the oldest K841189 (1984). 1 later device descends from it, 1 citing it directly.
- Root · 17 generations backK003155 Vertebral Body ReplacementOsteotech, Inc. · 2001
- 13 generations between
- 3 generations backK150918 PASS OCT Spinal SystemMedicrea International SA · 2015
- 2 generations backK153169 PASS OCT Patient Specific RodsMedicrea International · 2016
- 1 generation backK210449 Infinity™ OCT System, PASS OCT® Spinal SystemMedtronic · 2021
- This deviceK233078 Posterior Cervical Spine SystemDouble Medical Technology, Inc. · 2023
- Descendant · cites it directly · 0 of its ownK253195 TAURUS Posterior Occipital-Cervico-Thoracic Spinal SystemsZheJiang Decans Medical Devices Co., Ltd. · 2026
Show all 17 generations
- Root · 17 generations backK003155 Vertebral Body ReplacementOsteotech, Inc. · 2001
- 16 generations backK012254 VBROsteotech, Inc. · 2001
- 15 generations backK021791 Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2002
- 14 generations backK023570 Modification to Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2002
- 13 generations backK030601 Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2003
- 12 generations backK040536 Modification to Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2004
- 11 generations backK041556 Modification to Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2004
- 10 generations backK043561 Modification to Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2004
- 9 generations backK060719 Modification to Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2006
- 8 generations backK061938 Verte-Stack Spinal SystemMedtronic Sofamor Danek, Inc. · 2006
- 7 generations backK062427 Verte-Stack Spinal SystemMedtronic Sofamor Danek · 2006
- 6 generations backK070742 Modification to Vertex Reconstruction SystemMedtronic Sofamor Danek · 2007
- 5 generations backK123656 Vertex Reconstruction System, Vertex Select Reconstruction SystemMedtronic Sofamor Danek USA, Inc. · 2013
- 4 generations backK133556 Virage Oct Spinal Fixation SystemZimmer Spine, Inc. · 2014 · Recalled
- 3 generations backK150918 PASS OCT Spinal SystemMedicrea International SA · 2015
- 2 generations backK153169 PASS OCT Patient Specific RodsMedicrea International · 2016
- 1 generation backK210449 Infinity™ OCT System, PASS OCT® Spinal SystemMedtronic · 2021
- This deviceK233078 Posterior Cervical Spine SystemDouble Medical Technology, Inc. · 2023
Most influential descendants
Showing 1 of 1 · See all- K253195TAURUS Posterior Occipital-Cervico-Thoracic Spinal SystemsZheJiang Decans Medical Devices Co., Ltd. · 2026 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −17 | K003155 | Vertebral Body Replacement | Osteotech, Inc. | 2001 | — |
| −16 | K012254 | VBR | Osteotech, Inc. | 2001 | — |
| −15 | K021791 | Verte-Stack Spinal System | Medtronic Sofamor Danek | 2002 | — |
| −14 | K023570 | Modification to Verte-Stack Spinal System | Medtronic Sofamor Danek | 2002 | — |
| −13 | K030601 | Verte-Stack Spinal System | Medtronic Sofamor Danek | 2003 | — |
| −12 | K040536 | Modification to Verte-Stack Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −11 | K041556 | Modification to Verte-Stack Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −10 | K043561 | Modification to Verte-Stack Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −9 | K060719 | Modification to Verte-Stack Spinal System | Medtronic Sofamor Danek | 2006 | — |
| −8 | K061938 | Verte-Stack Spinal System | Medtronic Sofamor Danek, Inc. | 2006 | — |
| −7 | K062427 | Verte-Stack Spinal System | Medtronic Sofamor Danek | 2006 | — |
| −6 | K070742 | Modification to Vertex Reconstruction System | Medtronic Sofamor Danek | 2007 | — |
| −5 | K123656 | Vertex Reconstruction System, Vertex Select Reconstruction System | Medtronic Sofamor Danek USA, Inc. | 2013 | — |
| −4 | K133556 | Virage Oct Spinal Fixation System | Zimmer Spine, Inc. | 2014 | 2 |
| −3 | K150918 | PASS OCT Spinal System | Medicrea International SA | 2015 | — |
| −2 | K153169 | PASS OCT Patient Specific Rods | Medicrea International | 2016 | — |
| −1 | K210449 | Infinity™ OCT System, PASS OCT® Spinal System | Medtronic | 2021 | — |
| 0 (this device) | K233078 | Posterior Cervical Spine System | Double Medical Technology, Inc. | 2023 | — |
| +1 | K253195 | TAURUS Posterior Occipital-Cervico-Thoracic Spinal Systems | ZheJiang Decans Medical Devices Co., Ltd. | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 0 |
| 2002 | 13 | 0 |
| 2003 | 11 | 0 |
| 2004 | 27 | 0 |
| 2005 | 17 | 0 |
| 2006 | 11 | 0 |
| 2007 | 6 | 0 |
| 2008 | 6 | 0 |
| 2009 | 7 | 0 |
| 2010 | 2 | 0 |
| 2011 | 3 | 0 |
| 2012 | 1 | 0 |
| 2013 | 2 | 0 |
| 2014 | 3 | 0 |
| 2015 | 4 | 0 |
| 2016 | 1 | 0 |
| 2017 | 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 NKG? 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 NKG device
- #1 K252327 CMORE® CT System; CMORE® CT System Navigated…score 19.6 · 22 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 |
|---|---|---|---|
| * | K210449 | Infinity™ OCT System, PASS OCT® Spinal SystemSummary page 4…es NKG, KWP Regulatory class II Classification panel Orthopedic Predicate Device Legally marketed device(s) to which equivalence is claimed Primary predicate device: K210449 Infinity™ OCT System Additional predicate device: K 142838 Synapse Occipital-Cervical-Thoracic (OCT) System Reason for 510(k)… | 2021 |
| * | K142838 | Synapse Occipital-Cervical-Thoracic (OCT) SystemSummary page 4…dic Predicate Device Legally marketed device(s) to which equivalence is claimed Primary predicate device: K210449 Infinity™ OCT System Additional predicate device: K 142838 Synapse Occipital-Cervical-Thoracic (OCT) System Reason for 510(k) submission New device Device Description The Posterior Cer… | 2015 |
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 |
|---|---|---|---|
| K253195 | TAURUS Posterior Occipital-Cervico-Thoracic Spinal Systems | 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 22 years and passes through 9 companies; a new generation was cleared every 10 months on median.
- 17 of the 169 ancestors have a recall of any class.
- Of its descendants, K253195 (ZheJiang Decans Medical Devices Co., Ltd., 2026) has gone furthest, with 0 descendants of its own.
- 1 other device also cites its predicate K210449.
How does its category compare?
All NKG devicesNKG Posterior Cervical Screw System: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · NKG
6in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · NKG
58in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · NKG
2in 2020
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · NKG
153in 2025
MAUDE reports naming product code NKG, 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 | 0 | — | 0 | 0 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 17 | 71 | 0 | 4 |
| 2016 | 16 | 87 | 0 | 73 |
| 2017 | 15 | 108 | 0 | 99 |
| 2018 | 12 | 61 | 1 | 127 |
| 2019 | 8 | 50 | 1 | 214 |
| 2020 | 14 | 59 | 2 | 236 |
| 2021 | 7 | 56 | 0 | 704 |
| 2022 | 7 | 108 | 0 | 175 |
| 2023 | 10 | 58 | 0 | 131 |
| 2024 | 3 | 100 | 0 | 206 |
| 2025 | 6 | 58 | 0 | 153 |
| 2026 | 4 | 169 | 0 | — |
What is it indicated for?
The Posterior Cervical Spine System is intended to provide immobilization and stabilization of spinal segments as an adjunct to fusion for the following acute and chronic instabilities of the craniocervical junction, the cervical spine (C1 to C7), and the thoracic spine from T1-T2:
(1)Traumatic spinal fractures and/or traumatic dislocations.
(2)Instability or deformity.
(3)Failed previous fusions (e.g. pseudarthrosis).
(4)Tumors involving the cervical spine.
(5)Degenerative disease, including intractable radiculopathy and/or myelopathy, neck and/or arm pain of discogenic origin as confirmed by radiographic studies, and degenerative disease of the facets with instability.
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/K233078 · printed Nov 6, 2026
Cite this page
510(k) Report. “K233078: Posterior Cervical Spine System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K233078
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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