510(k) · Cleared
ClearedAdena-Zina Spinal System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Shanghai Sanyou Medical Co, Ltd. · NKB Thoracolumbosacral Pedicle Screw System
Cleared on Jul 28, 2023 as substantially equivalent to K152781 (Shanghai Sanyou Medical Co, Ltd., 2016) and 2 other predicates after a 28-day review. Its family tree reaches back 20 generations to 2004.
- Decided
- Jul 28, 2023
- Review
- 28 days
- Class
- Class II
- Product code
- NKB
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 20 generations to K040583 (2004). 241 ancestors in all, the oldest K841189 (1984). No later device cites it as a predicate yet.
- Root · 20 generations backK040583 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2004
- 16 generations between
- 3 generations backK170679 CD HORIZON® Spinal System, Medtronic Reusable Instruments for Use…Medtronic Sofamor Danek · 2017
- 2 generations backK191148 Medtronic HV-R™ Bone Cement, Kyphon™ Xpede™ Bone Cement, CD Horizon™…Medtronic Sofamor Danek USA, Inc. · 2019
- 1 generation backK193011 CD Horizon™ Fenestrated Screw SetMedtronic Sofamor Danek USA, Inc. · 2020
- This deviceK231931 Adena-Zina Spinal SystemShanghai Sanyou Medical Co, Ltd. · 2023
Show all 20 generations
- Root · 20 generations backK040583 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2004
- 19 generations backK041118 Modification to CD Horizon Spinal SystemMedtronic Sofamor Danek · 2004
- 18 generations backK042025 Modification to CD Horizon Spinal SystemMedtronic Sofamor Danek, Inc. · 2004 · Recalled
- 17 generations backK043151 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2005
- 16 generations backK050809 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2005
- 15 generations backK052187 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2005
- 14 generations backK053101 CD Horizon Spinal SystemMedtronic Sofamor Danek · 2006
- 13 generations backK091442 CD Horizon Spinal SystemMedtronic Sofamor Danek · 2009
- 12 generations backK091974 Modification to CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2009 · Recalled
- 11 generations backK102555 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2010
- 10 generations backK112473 CD Horizon Spinal SystemMedtronic Sofamor Danek, Inc. · 2011
- 9 generations backK113174 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2011 · Recalled
- 8 generations backK121680 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2012
- 7 generations backK122862 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2012
- 6 generations backK141605 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2014
- 5 generations backK143019 CD HORIZON Spinal System, IPC POWEREASE SystemMedtronic Sofamor Danek USA, Inc. · 2015
- 4 generations backK153463 CD HORIZON Spinal System, IPC POWEREASE SystemMedtronic Sofamor Danek USA, Inc. · 2015
- 3 generations backK170679 CD HORIZON® Spinal System, Medtronic Reusable Instruments for Use…Medtronic Sofamor Danek · 2017
- 2 generations backK191148 Medtronic HV-R™ Bone Cement, Kyphon™ Xpede™ Bone Cement, CD Horizon™…Medtronic Sofamor Danek USA, Inc. · 2019
- 1 generation backK193011 CD Horizon™ Fenestrated Screw SetMedtronic Sofamor Danek USA, Inc. · 2020
- This deviceK231931 Adena-Zina Spinal SystemShanghai Sanyou Medical Co, Ltd. · 2023
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −20 | K040583 | Modification to: CD Horizon Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −19 | K041118 | Modification to CD Horizon Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −18 | K042025 | Modification to CD Horizon Spinal System | Medtronic Sofamor Danek, Inc. | 2004 | 4 |
| −17 | K043151 | Modification to: CD Horizon Spinal System | Medtronic Sofamor Danek | 2005 | — |
| −16 | K050809 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2005 | — |
| −15 | K052187 | Modification to: CD Horizon Spinal System | Medtronic Sofamor Danek | 2005 | — |
| −14 | K053101 | CD Horizon Spinal System | Medtronic Sofamor Danek | 2006 | — |
| −13 | K091442 | CD Horizon Spinal System | Medtronic Sofamor Danek | 2009 | — |
| −12 | K091974 | Modification to CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2009 | 1 |
| −11 | K102555 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2010 | — |
| −10 | K112473 | CD Horizon Spinal System | Medtronic Sofamor Danek, Inc. | 2011 | — |
| −9 | K113174 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2011 | 1 |
| −8 | K121680 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2012 | — |
| −7 | K122862 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2012 | — |
| −6 | K141605 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2014 | — |
| −5 | K143019 | CD HORIZON Spinal System, IPC POWEREASE System | Medtronic Sofamor Danek USA, Inc. | 2015 | — |
| −4 | K153463 | CD HORIZON Spinal System, IPC POWEREASE System | Medtronic Sofamor Danek USA, Inc. | 2015 | — |
| −3 | K170679 | CD HORIZON® Spinal System, Medtronic Reusable Instruments for Use with the… | Medtronic Sofamor Danek | 2017 | — |
| −2 | K191148 | Medtronic HV-R™ Bone Cement, Kyphon™ Xpede™ Bone Cement, CD Horizon™… | Medtronic Sofamor Danek USA, Inc. | 2019 | — |
| −1 | K193011 | CD Horizon™ Fenestrated Screw Set | Medtronic Sofamor Danek USA, Inc. | 2020 | — |
| 0 (this device) | K231931 | Adena-Zina Spinal System | Shanghai Sanyou Medical Co, Ltd. | 2023 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 5 | 0 |
| 2000 | 14 | 0 |
| 2001 | 11 | 0 |
| 2002 | 10 | 0 |
| 2003 | 10 | 0 |
| 2004 | 26 | 0 |
| 2005 | 19 | 0 |
| 2006 | 12 | 0 |
| 2007 | 6 | 0 |
| 2008 | 8 | 0 |
| 2009 | 7 | 0 |
| 2010 | 6 | 0 |
| 2011 | 5 | 0 |
| 2012 | 3 | 0 |
| 2013 | 5 | 0 |
| 2014 | 3 | 0 |
| 2015 | 4 | 0 |
| 2016 | 3 | 0 |
| 2017 | 3 | 0 |
| 2018 | 2 | 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 NKB? 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 NKB device
- #1 K223494 CD Horizon Spinal Systemscore 40.4 · 30 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 |
|---|---|---|---|
| * | K152781 | Adena-Zina SystemSummary page 4…xation is provided via a posterior approach. The components are made from titanium alloy or cobalt chrome alloy. Components of the system include the originally cleared (K152781) straight and pre-bent rods, reduction screws, fixed angle screws, fixed angle reduction screws, multi-axial screws, multi-axial… | 2016 |
| * | K152604 | KYPHON HV-R Fenestrated Screw Cement, CD HORIZON Fenestrated Screw SetSummary page 5…ollowing predicate devices: Primary Predicate: • Shanghai Sanyou Adena-Zina System - K152781 Secondary Predicates: • Medtronic CD Horizon Fenestrated Screw Set- K152604; K193011 There are insignificant differences between the subject ZINA II screws and the predicate devices. The I… | 2016 |
| * | K193011 | CD Horizon™ Fenestrated Screw SetSummary page 5…predicate devices: Primary Predicate: • Shanghai Sanyou Adena-Zina System - K152781 Secondary Predicates: • Medtronic CD Horizon Fenestrated Screw Set- K152604; K193011 There are insignificant differences between the subject ZINA II screws and the predicate devices. The Indication… | 2020 |
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 19 years and passes through 4 companies; a new generation was cleared every 7 months on median.
- 34 of the 241 ancestors have a recall of any class.
- 3 other devices also cite its predicate K152781.
How does its category compare?
All NKB devicesNKB Thoracolumbosacral Pedicle 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 · NKB
24in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · NKB
61in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · NKB
1in 2025
Class I (1 since 2007) Class II/III not classified
Adverse event reports per year · NKB
1,171in 2025
MAUDE reports naming product code NKB, 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 | 38 | 87 | 4 | 34 |
| 2008 | 36 | 59 | 5 | 82 |
| 2009 | 44 | 71 | 33 | 171 |
| 2010 | 37 | 111 | 4 | 462 |
| 2011 | 48 | 84 | 3 | 577 |
| 2012 | 60 | 79 | 13 | 1,747 |
| 2013 | 35 | 73 | 0 | 1,962 |
| 2014 | 46 | 90 | 3 (1) | 1,671 |
| 2015 | 55 | 90 | 3 | 1,446 |
| 2016 | 50 | 84 | 1 | 1,585 |
| 2017 | 63 | 69 | 1 | 1,618 |
| 2018 | 56 | 61 | 3 | 1,684 |
| 2019 | 39 | 84 | 1 | 1,915 |
| 2020 | 48 | 68 | 1 | 2,076 |
| 2021 | 32 | 61 | 0 | 1,745 |
| 2022 | 34 | 88 | 5 | 1,339 |
| 2023 | 44 | 72 | 2 | 919 |
| 2024 | 39 | 57 | 3 | 1,614 |
| 2025 | 24 | 61 | 1 | 1,171 |
| 2026 | 30 | 91 | 3 | — |
What is it indicated for?
The Adena-Zina Spinal System is intended for posterior, non-cervical fixation as an adjunct to fusion for skeletally mature patients for the following indications: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e., fracture or dislocation); spinal stenosis; curvatures (i.e., scoliosis, kyphosis and/or lordosis); tumor…
Read the full statement (140 words)
The Adena-Zina Spinal System is intended for posterior, non-cervical fixation as an adjunct to fusion for skeletally mature patients for the following indications: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies); spondylolisthesis; trauma (i.e., fracture or dislocation); spinal stenosis; curvatures (i.e., scoliosis, kyphosis and/or lordosis); tumor; pseudarthrosis; and/or failed previous fusion. In addition, when used as a pedicle screw fixation system, the Adena-Zina Spinal System is intended for skeletally mature patients with severe spondylolisthesis (Grades 3 and 4) of the fifth lumbar-first sacral, L5-S1 vertebra, who are receiving fusion by autogenous bone graft only, who are having the device attached to the lumbar and sacral spine (levels may be from L3 to the sacrum/ilium), who are having the device removed after the attainment of a solid fusion.
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/K231931 · printed Nov 6, 2026
Cite this page
510(k) Report. “K231931: Adena-Zina Spinal System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K231931
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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