510(k) · Cleared
ClearedMASADA Modular Spinal Fixation System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Astura Medical · NKB Thoracolumbosacral Pedicle Screw System
Cleared on Nov 16, 2023 as substantially equivalent to K181139 (Astura Medical, LLC, 2018) and 3 other predicates after a 160-day review. Its family tree reaches back 18 generations to 2004. 1 of the 406 devices in its family, counting itself, has a Class I recall. 2 later devices descend from it.
- Decided
- Nov 16, 2023
- Review
- 160 days
- Class
- Class II
- Product code
- NKB
- Recalls
- None
- Predicates
- 4
Its longest line of descent runs back 18 generations to K040583 (2004). 403 ancestors in all, the oldest K781443 (1978). 2 later devices descend from it, 2 citing it directly. 1 of the 406 devices in this family, counting this one, has a Class I recall.
- Root · 18 generations backK040583 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2004
- 14 generations between
- 3 generations backK140276 CD Horizon Spinal SystemMedtronic Sofamor Danek · 2014
- 2 generations backK142381 Xia 3 Spinal SystemStryker Corp. · 2014
- 1 generation backK181139 OLYMPIC Posterior Spinal Fixation SystemAstura Medical, LLC · 2018
- This deviceK231694 MASADA Modular Spinal Fixation SystemAstura Medical · 2023
- Descendant · cites it directly · 0 of its ownK252346 OLYMPIC Posterior Spinal Fixation System; MASADA Modular Spinal…Astura Medical · 2025
- Descendant · cites it directly · 0 of its ownK243259 MASADA Modular Spinal Fixation SystemAstura Medical · 2025
Show all 18 generations
- Root · 18 generations backK040583 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2004
- 17 generations backK041118 Modification to CD Horizon Spinal SystemMedtronic Sofamor Danek · 2004
- 16 generations backK042025 Modification to CD Horizon Spinal SystemMedtronic Sofamor Danek, Inc. · 2004 · Recalled
- 15 generations backK043151 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2005
- 14 generations backK050809 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2005
- 13 generations backK052187 Modification to: CD Horizon Spinal SystemMedtronic Sofamor Danek · 2005
- 12 generations backK053101 CD Horizon Spinal SystemMedtronic Sofamor Danek · 2006
- 11 generations backK091442 CD Horizon Spinal SystemMedtronic Sofamor Danek · 2009
- 10 generations backK091974 Modification to CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2009 · Recalled
- 9 generations backK102555 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2010
- 8 generations backK112473 CD Horizon Spinal SystemMedtronic Sofamor Danek, Inc. · 2011
- 7 generations backK113174 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2011 · Recalled
- 6 generations backK121680 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2012
- 5 generations backK131321 CD Horizon Spinal SystemMedtronic Sofamor Danek USA · 2013
- 4 generations backK132471 CD Horizon Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2013
- 3 generations backK140276 CD Horizon Spinal SystemMedtronic Sofamor Danek · 2014
- 2 generations backK142381 Xia 3 Spinal SystemStryker Corp. · 2014
- 1 generation backK181139 OLYMPIC Posterior Spinal Fixation SystemAstura Medical, LLC · 2018
- This deviceK231694 MASADA Modular Spinal Fixation SystemAstura Medical · 2023
Class I recalls in this family
- K100952 Modification to Synthes Matrix System2 generations back · 2010
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −18 | K040583 | Modification to: CD Horizon Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −17 | K041118 | Modification to CD Horizon Spinal System | Medtronic Sofamor Danek | 2004 | — |
| −16 | K042025 | Modification to CD Horizon Spinal System | Medtronic Sofamor Danek, Inc. | 2004 | 4 |
| −15 | K043151 | Modification to: CD Horizon Spinal System | Medtronic Sofamor Danek | 2005 | — |
| −14 | K050809 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2005 | — |
| −13 | K052187 | Modification to: CD Horizon Spinal System | Medtronic Sofamor Danek | 2005 | — |
| −12 | K053101 | CD Horizon Spinal System | Medtronic Sofamor Danek | 2006 | — |
| −11 | K091442 | CD Horizon Spinal System | Medtronic Sofamor Danek | 2009 | — |
| −10 | K091974 | Modification to CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2009 | 1 |
| −9 | K102555 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2010 | — |
| −8 | K112473 | CD Horizon Spinal System | Medtronic Sofamor Danek, Inc. | 2011 | — |
| −7 | K113174 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2011 | 1 |
| −6 | K121680 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2012 | — |
| −5 | K131321 | CD Horizon Spinal System | Medtronic Sofamor Danek USA | 2013 | — |
| −4 | K132471 | CD Horizon Spinal System | Medtronic Sofamor Danek USA, Inc. | 2013 | — |
| −3 | K140276 | CD Horizon Spinal System | Medtronic Sofamor Danek | 2014 | — |
| −2 | K142381 | Xia 3 Spinal System | Stryker Corp. | 2014 | — |
| −1 | K181139 | OLYMPIC Posterior Spinal Fixation System | Astura Medical, LLC | 2018 | — |
| 0 (this device) | K231694 | MASADA Modular Spinal Fixation System | Astura Medical | 2023 | — |
| +1 | K252346 | OLYMPIC Posterior Spinal Fixation System; MASADA Modular Spinal Fixation System | Astura Medical | 2025 | — |
| +1 | K243259 | MASADA Modular Spinal Fixation System | Astura Medical | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1978 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 13 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 15 | 0 |
| 1999 | 12 | 0 |
| 2000 | 22 | 0 |
| 2001 | 25 | 0 |
| 2002 | 21 | 0 |
| 2003 | 22 | 0 |
| 2004 | 26 | 0 |
| 2005 | 26 | 0 |
| 2006 | 23 | 0 |
| 2007 | 18 | 0 |
| 2008 | 22 | 0 |
| 2009 | 16 | 0 |
| 2010 | 16 | 1 |
| 2011 | 11 | 0 |
| 2012 | 11 | 0 |
| 2013 | 10 | 0 |
| 2014 | 7 | 0 |
| 2015 | 6 | 0 |
| 2016 | 5 | 0 |
| 2017 | 3 | 0 |
| 2018 | 2 | 0 |
| 2023 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2025 | 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.
1 device in this family has a Class I recall. 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? (4)
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 |
|---|---|---|---|
| * | K181139 | OLYMPIC Posterior Spinal Fixation SystemSummary page 5…21 CFR section 888.3070, 888.3050, 888.3010, 882.4560 Device Panel Orthopedic Primary Predicate Device OLYMPIC Posterior Spinal Fixation System (K181139) Additional Predicate OLYMPIC Navigated Instruments (K172166) Device(s) OLYMPIC Deformity Band System… | 2018 |
| * | K172166 | OLYMPIC Navigated InstrumentsSummary page 5…el Orthopedic Primary Predicate Device OLYMPIC Posterior Spinal Fixation System (K181139) Additional Predicate OLYMPIC Navigated Instruments (K172166) Device(s) OLYMPIC Deformity Band System (K222097) Globus CREO Stabilization Syst… | 2018 |
| * | K222097 | OLYMPIC Deformity Band SystemSummary page 5…sterior Spinal Fixation System (K181139) Additional Predicate OLYMPIC Navigated Instruments (K172166) Device(s) OLYMPIC Deformity Band System (K222097) Globus CREO Stabilization System (K124058) Device Description The MASADA Modular Spinal F… | 2023 |
| * | K124058 | Creo Stabilization SystemSummary page 5…YMPIC Navigated Instruments (K172166) Device(s) OLYMPIC Deformity Band System (K222097) Globus CREO Stabilization System (K124058) Device Description The MASADA Modular Spinal Fixation System is a top loading thoracolumb… | 2013 |
What descends from it? (2)
2 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (1 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
- K100952Modification to Synthes Matrix SystemSynthes Spine · 2010 · 2 generations back · ◆ in the 2010 ancestors bar of FIG. 11 Class I recall
What does this lineage say?
- The line of descent spans 19 years and passes through 7 companies; a new generation was cleared every 5 months on median.
- 43 of the 403 ancestors have a recall of any class; 1 has a Class I recall.
- Of its descendants, K252346 (Astura Medical, 2025) has gone furthest, with 0 descendants of its own.
- 3 other devices also cite its predicate K181139.
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?
Pedicle Screw System: The MASADA Modular Spinal Fixation System is intended for immobilization and stabilization of the posterior, non-cervical spine in skeletally mature patients as an adjunct to fusion 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…
Read the full statement (383 words)
Pedicle Screw System: The MASADA Modular Spinal Fixation System is intended for immobilization and stabilization of the posterior, non-cervical spine in skeletally mature patients as an adjunct to fusion 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, or lordosis), tumor, pseudoarthrosis, and/or failed previous fusion.
When used for posterior non-cervical pedicle screw fixation in pediatric patients, the MASADA pedicle screw implants are indicated as an adjunct to fusion to treat adolescent idiopathic scoliosis. The MASADA pedicle screw is intended to be used with autograft and/or allograft. Pediatric pedicle screw fixation is limited to a posterior approach.
Navigated Instrument System: The MASADA navigated instruments are intended to be used in the preparation and placement of MASADA screws during spinal surgery to assist the surgeon in precisely locating anatomical structures in either open or minimally invasive procedures. These instruments are designed for use with the Medtronic StealthStation® System, which is indicated for any medical condition in which the use of stereotactic surgery may be appropriate, and where reference to a rigid anatomical structure, such as a skull, a long bone, or vertebra, can be identified relative to a CT or MR based model, fluoroscopy images, or digitized landmarks of the anatomy. Refer to the Astura Navigated Instrument system Instructions For Use (INS-00006) regarding the use of these instruments.
Sublaminar Band System: The MASADA sublaminar band is a temporary implant for use in orthopedic surgery. The band system is intended to provide temporary stabilization as a bone anchor during the development of solid bony fusion and aid in the repair of bone fractures. The indications for use include the following applications:
- Spinal trauma surgery, used in sublaminar or facet wiring techniques.
- Spinal reconstructive surgery, incorporated into constructs for the purpose of correction of spinal deformities such as idiopathic and neuromuscular scoliosis in patients 8 years of age or older, adult scoliosis, kyphosis and spondylolisthesis.
- Spinal degenerative surgery, as an adjunct to spinal fusions.
The MASADA sublaminar band may also be used in conjunction with other medical grade implants made of similar metals whenever "wiring" may help secure the attachment of the other implants.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K231694 · printed Nov 6, 2026
Cite this page
510(k) Report. “K231694: MASADA Modular Spinal Fixation System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K231694
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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