510(k) · Cleared
ClearedModification to Blackstone Spinal Fixation System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Blackstone Medical, Inc. · KWP Appliance, Fixation, Spinal Interlaminal
Cleared on Nov 13, 2002 as substantially equivalent to K994217 (Blackstone Medical, Inc., 2000) and 3 other predicates after a 26-day review. Its family tree reaches back 2 generations to 1998. 300 later devices descend from it.
- Decided
- Nov 13, 2002
- Review
- 26 days
- Class
- Class II
- Product code
- KWP
- Recalls
- None
- Predicates
- 4
Its longest line of descent runs back 2 generations to K980447 (1998). 4 ancestors in all. 300 later devices descend from it, 8 citing it directly.
- Root · 2 generations backK980447 Depuy Motech Moss Miami Spinal SystemDePuy Orthopaedics, Inc. · 1998
- 1 generation backK020674 Blackstone Spinal Fixation System 4.5MM Multi-Axial ScrewBlackstone Medical, Inc. · 2002
- This deviceK023498 Modification to Blackstone Spinal Fixation SystemBlackstone Medical, Inc. · 2002
- Descendant · cites it directly · 298 of its ownK030581 Blackstone Spinal Fixation System Lateral Offset (System Modification)Blackstone Medical, Inc. · 2003
- Descendant · cites it directly · 297 of its ownK030241 Modification to Blackstone Spinal Fixation SystemBlackstone Medical, Inc. · 2003
- Descendant · cites it directly · 296 of its ownK080407 Blackstone SFS Parallel Rod ConnectorsBlackstone Medical, Inc. · 2008 · Recalled
- Descendant · cites it directly · 277 of its ownK081684 Blackstone Pedicle Screw SystemBlackstone Medical, Inc. · 2008 · Recalled
- Descendant · 2 generations on · 209 of its ownK082797 Blackstone Pedicle Screw SystemBlackstone Medical, Inc. · 2008
Showing 5 of 300 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 300 · See all- K030581Blackstone Spinal Fixation System Lateral Offset (System Modification)Blackstone Medical, Inc. · 2003 · cites it directly298descendants
- K030241Modification to Blackstone Spinal Fixation SystemBlackstone Medical, Inc. · 2003 · cites it directly297descendants
- K080407Blackstone SFS Parallel Rod ConnectorsBlackstone Medical, Inc. · 2008 · cites it directly296descendants
- K081684Blackstone Pedicle Screw SystemBlackstone Medical, Inc. · 2008 · cites it directly277descendants
- K082797Blackstone Pedicle Screw SystemBlackstone Medical, Inc. · 2008 · 2 generations on209descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −2 | K980447 | Depuy Motech Moss Miami Spinal System | DePuy Orthopaedics, Inc. | 1998 | — |
| −1 | K020674 | Blackstone Spinal Fixation System 4.5MM Multi-Axial Screw | Blackstone Medical, Inc. | 2002 | — |
| 0 (this device) | K023498 | Modification to Blackstone Spinal Fixation System | Blackstone Medical, Inc. | 2002 | — |
| +1 | K030581 | Blackstone Spinal Fixation System Lateral Offset (System Modification) | Blackstone Medical, Inc. | 2003 | — |
| +1 | K030241 | Modification to Blackstone Spinal Fixation System | Blackstone Medical, Inc. | 2003 | — |
| +1 | K080407 | Blackstone SFS Parallel Rod Connectors | Blackstone Medical, Inc. | 2008 | 1 |
| +1 | K081684 | Blackstone Pedicle Screw System | Blackstone Medical, Inc. | 2008 | 3 |
| +2 | K082797 | Blackstone Pedicle Screw System | Blackstone Medical, Inc. | 2008 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1998 | 1 | 0 |
| 2000 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2003 | 2 | 0 |
| 2004 | 1 | 0 |
| 2008 | 3 | 0 |
| 2009 | 1 | 0 |
| 2010 | 4 | 0 |
| 2011 | 2 | 0 |
| 2012 | 5 | 0 |
| 2013 | 9 | 0 |
| 2014 | 5 | 0 |
| 2015 | 9 | 0 |
| 2016 | 12 | 0 |
| 2017 | 23 | 0 |
| 2018 | 16 | 0 |
| 2019 | 17 | 0 |
| 2020 | 23 | 0 |
| 2021 | 16 | 0 |
| 2022 | 23 | 0 |
| 2023 | 36 | 0 |
| 2024 | 33 | 0 |
| 2025 | 34 | 0 |
| 2026 | 26 | 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 KWP? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
- Candidate predicates for a device like this, rankedin the report
- Recall history across each candidate’s familyin 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 |
|---|---|---|---|
| * | K994217 | Blackstone Spinal Fixation SystemSummary page 1…y means of screws to the non- cervical spine. The Blackstone Spinal Fixation System consists of an assortment of screws and rods which have received 5 1O(k) clearance (#K9942 17, and #K020674). Intcnded Use / Indications for Use: The Blackstone Spinal Fixation System is intended for non-cervical use in t… | 2000 |
| * | K020674 | Blackstone Spinal Fixation System 4.5MM Multi-Axial ScrewSummary page 1…quivalent Devices: BlackstoneTM Spinal Fixation System w 9 4 2 17) Blackstonem Spinal Fixation System 4 . 5 m Multi-Axial Screws (K020674) Device Description: The BlackstoneTMSpinal Fixation System 4.5mm, 5.5mm, 6.5mm, and 7.5mm Multi- Axial Screws are titanium all… | 2002 |
| * | K980447 | Depuy Motech Moss Miami Spinal System Our OCR of the scanned summary read K980477, FDA’s number for Image Vue Eeg (Sam Technology, Inc.). Corrected to the number one digit away whose FDA name carries the summary’s words for the device, “DePuy Motech Moss Miami Spinal System”. | 1998 |
| * | K982320 | Depuy Motech Moss Miami Spinal SystemSummary page 3…6.5mm, and 7.5m.m Multi-Axial Screws by their very nature are substantially equivalent to the DePuy Motech Moss Miami Spinal Koz234948 System (K980477, K982320) which has been cleared by FDA for certain anterior and pedicle fixation use indications. fiy@ 3.+ 3 { 5 <… | 1998 |
What descends from it? (300)
See all 3008 later devices cite it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K030581 | Blackstone Spinal Fixation System Lateral Offset (System Modification) | 2003 | 298 |
| K030241 | Modification to Blackstone Spinal Fixation System | 2003 | 297 |
| K080407 | Blackstone SFS Parallel Rod Connectors | 2008 | 296 |
| K081684 | Blackstone Pedicle Screw System | 2008 | 277 |
| K153428 | Firebird Spinal Fixation System, Phoenix MIS Spinal Fixation System | 2016 | 73 |
| K140260 | Skyhawk Lateral Plate System | 2014 | 14 |
| K042514 | Modification to Blackstone Modular Pedicle Screw System | 2004 | 1 |
| K111448 | Icon (TM) Modular Pedicle Screw System | 2012 | 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 4 years and passes through 2 companies; a new generation was cleared every 4.0 years on median.
- None of the 4 ancestors has a recall.
- Of its descendants, K030581 (Blackstone Medical, Inc., 2003) has gone furthest, with 298 descendants of its own.
- 9 other devices also cite its predicate K994217.
How does its category compare?
All KWP devicesKWP Appliance, Fixation, Spinal Interlaminal: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · KWP
9in 2015
2026 to Oct 25, outlined.
Median 510(k) review, days · KWP
113in 2015
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KWP
2in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KWP
494in 2025
MAUDE reports naming product code KWP, 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 | 14 | 96 | 2 | 210 |
| 2008 | 13 | 50 | 1 | 594 |
| 2009 | 12 | 89 | 23 | 682 |
| 2010 | 14 | 186 | 2 | 474 |
| 2011 | 12 | 67 | 6 | 792 |
| 2012 | 18 | 112 | 1 | 918 |
| 2013 | 12 | 99 | 3 | 1,090 |
| 2014 | 13 | 138 | 0 | 1,022 |
| 2015 | 9 | 113 | 1 | 1,348 |
| 2016 | 0 | — | 3 | 1,379 |
| 2017 | 0 | — | 0 | 864 |
| 2018 | 0 | — | 1 | 657 |
| 2019 | 0 | — | 2 | 518 |
| 2020 | 0 | — | 0 | 796 |
| 2021 | 0 | — | 0 | 525 |
| 2022 | 0 | — | 2 | 335 |
| 2023 | 0 | — | 0 | 332 |
| 2024 | 0 | — | 0 | 436 |
| 2025 | 0 | — | 0 | 494 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The Blackstone Spinal Fixation System is intended for non-cervical use in the spine. The Blackstone Spinal Fixation System, when used for pedicle screw fixation, is intended only for patients: a) Having severe spondylolisthesis (Grades 3 and 4) at the L5-S1 joint; b) Who are receiving fusion using autogenous bone graft only; c) Who are having the device fixed or attached to the lumbar and sacral spine (L3 and below); and d) Who are having the device…
Read the full statement (301 words)
The Blackstone Spinal Fixation System is intended for non-cervical use in the spine. The Blackstone Spinal Fixation System, when used for pedicle screw fixation, is intended only for patients:
a) Having severe spondylolisthesis (Grades 3 and 4) at the L5-S1 joint;
b) Who are receiving fusion using autogenous bone graft only;
c) Who are having the device fixed or attached to the lumbar and sacral spine (L3 and below); and
d) Who are having the device removed after the development of a solid fusion mass.
The Blackstone Spinal Fixation System, when used as a pedicle screw system in skeletally mature patients, is intended to provide immobilization and stabilization of spinal segments, as an adjunct to fusion, in treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar and sacral spine:
a) Degenerative spondylolistheses with objective evidence of neurologic impairment;
b) Fracture;
c) Dislocation;
d) Scoliosis;
e) Kyphosis;
f) Spinal tumor; and
g) Failed previous fusion (pseudarthrosis).
The Blackstone Spinal Fixation System, when used for anterolateral non-pedicle screw fixation to the non-cervical spine, is intended for the following indications:
a) Degenerative disc disease (as defined as back pain of discogenic origin with degenerative disc confirmed by history and radiographic studies);
b) spondylolistheses;
c) spinal stenosis;
d) spinal deformities (i.e., scoliosis, kyphosis, lordosis);
e) tumor;
f) pseudoarthrosis;
g) previous failed fusion; and
h) trauma (i.e., fracture or dislocation).
The Blackstone Spinal Fixation System, when used for posterior non-pedicle screw fixation system of the non-cervical spine, is intended for the following indications:
a) Degenerative disc disease (as defined as back pain of discogenic origin with degenerative disc confirmed by history and radiographic studies);
b) spondylolistheses;
c) spinal stenosis;
d) spinal deformities (i.e., scoliosis, kyphosis, lordosis);
e) tumor;
f) pseudoarthrosis;
g) previous failed fusion; and
h) trauma (i.e., fracture or dislocation).
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/K023498 · printed Nov 6, 2026
Cite this page
510(k) Report. “K023498: Modification to Blackstone 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/K023498
Report an extraction error
Are you the manufacturer?
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