510(k) · Cleared
ClearedCalibrate LTX Interbody System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Alphatec Spine, Inc. · MAX Intervertebral Fusion Device With Bone Graft, Lumbar
Cleared on Mar 29, 2023 as substantially equivalent to K222028 (Alphatec Spine, 2022) and 1 other predicate after a 117-day review. Its family tree reaches back 31 generations to 1984. 2 of the 1,199 devices in its family, counting itself, have a Class I recall. 7 later devices descend from it.
- Decided
- Mar 29, 2023
- Review
- 117 days
- Class
- Class II
- Product code
- MAX
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 31 generations to K841189 (1984). 1,191 ancestors in all, the oldest K761228 (1976). 7 later devices descend from it, 2 citing it directly. 2 of the 1,199 devices in this family, counting this one, have a Class I recall.
- Root · 31 generations backK841189 Oec/Rezaian Spinal FixatorOrthopedic Equipment Co., Inc. · 1984
- 27 generations between
- 3 generations backK212524 Anteralign Spinal System with Titan nanoLOCK Surface TechnologyMedtronic Sofamor Danek USA, Inc. · 2021
- 2 generations backK214010 Anteralign Spinal System with Titan nanoLOCK Surface TechnologyMedtronic Sofamor Danek USA · 2022
- 1 generation backK222028 IdentiTi™ Porous Ti Interbody System, IdentiTi™ NanoTec™ Interbody…Alphatec Spine · 2022
- This deviceK223611 Calibrate LTX Interbody SystemAlphatec Spine, Inc. · 2023
- Descendant · cites it directly · 4 of its ownK242364 IdentiTi™ II Interbody SystemAlphatec Spine, Inc. · 2024
- Descendant · cites it directly · 1 of its ownK242147 Calibrate LTX Interbody System; Calibrate NanoTec LTX Interbody SystemAlphatec Spine, Inc. · 2024
- Descendant · 2 generations on · 0 of its ownK261020 Symmetrix™ L Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2026
- Descendant · 2 generations on · 0 of its ownK251575 IdentiTi™ II ALIF Standalone Interbody System; Transcend™ ALIF…Alphatec Spine · 2025
- Descendant · 2 generations on · 0 of its ownK251080 IdentiTi II Cervical Interbody SystemAlphatec Spine, Inc. · 2025
Show all 31 generations
- Root · 31 generations backK841189 Oec/Rezaian Spinal FixatorOrthopedic Equipment Co., Inc. · 1984
- 30 generations backK990148 Stackable Cage SystemDepuy Motech Acromed · 1999
- 29 generations backK003043 Surgical Titanium Mesh SystemDepuyacromed · 2001
- 28 generations backK022793 Tetris Spinal ImplantSignus Medical, LLC · 2003
- 27 generations backK031757 Peek Tetris Spinal ImplantSignus Medical, LLC · 2003
- 26 generations backK041888 Curved Peek Tetris Spinal ImplantSignus Medizintechnik GmbH · 2004
- 25 generations backK042930 Spacevision Cage SystemSpine Vision, Inc. · 2004
- 24 generations backK062759 Paramount VBR SystemInnovative Spinal Technologies, Inc. · 2007
- 23 generations backK072120 Paramount Intervertebral Body Fusion DeviceInnovative Spinal Technologies, Inc. · 2007
- 22 generations backK073291 Capstone Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2008
- 21 generations backK094025 Crescent Spinal SystemMedtronic Sofamor Danek · 2010
- 20 generations backK110543 Crescent (R) Spinal System TitaniumMedtronic Sofamor Danek USA, Inc. · 2011
- 19 generations backK121683 Acculif TL CageCoalign Innovations, Inc. · 2012
- 18 generations backK123752 Acculif TL and PL CageCoalign Innovations, Inc. · 2013
- 17 generations backK132505 Acculif TL and PL CageCoalign Innovations, Inc. · 2013 · Recalled
- 16 generations backK141217 Acculif TL and PL CageStryker Corporation · 2014 · Recalled
- 15 generations backK143163 AVS® AL and ALign PEEK Spacers, AVS® PL and UniLIF PEEK Spacers…Stryker Corporation · 2015
- 14 generations backK143616 AccuLIF TL and PL CageStryker Corporation · 2015 · Recalled
- 13 generations backK152304 Tritanium PL CageStryker · 2015 · Recalled
- 12 generations backK160955 Tritanium® PL CageStryker · 2016
- 11 generations backK162262 Tritanium® PL CageStryker · 2016
- 10 generations backK171496 Tritanium C Anterior Cervical CageStryker Spine · 2017
- 9 generations backK180364 HD LifeSciences Cervical IBFD SystemHd Lifesciences, LLC · 2018
- 8 generations backK183557 Endoskeleton® TA Interbody Fusion Device, Endoskeleton® TAS…Titan Spine, Inc. · 2019 · Recalled
- 7 generations backK192018 Endoskeleton TA Interbody Fusion Device, Endoskeleton TAS and TAS…Titan Spine, Inc. · 2019 · Recalled
- 6 generations backK191581 Endoskeleton TL Interbody Fusion Device, Endoskeleton TL…Titan Spine, Inc. · 2020
- 5 generations backK201267 Adaptix Interbody System with Titan nanoLOCK Surface TechnologyMedtronic Sofamor Danek · 2020
- 4 generations backK210425 Catalyft PL Expandable Interbody SystemMedtronic Sofamor Danek USA, Inc. · 2021 · Recalled
- 3 generations backK212524 Anteralign Spinal System with Titan nanoLOCK Surface TechnologyMedtronic Sofamor Danek USA, Inc. · 2021
- 2 generations backK214010 Anteralign Spinal System with Titan nanoLOCK Surface TechnologyMedtronic Sofamor Danek USA · 2022
- 1 generation backK222028 IdentiTi™ Porous Ti Interbody System, IdentiTi™ NanoTec™ Interbody…Alphatec Spine · 2022
- This deviceK223611 Calibrate LTX Interbody SystemAlphatec Spine, Inc. · 2023
Showing 5 of 7 descendants. See all descendants
Descendants cleared per year
Class I recalls in this family
Most influential descendants
Showing 5 of 7 · See all- K242364IdentiTi™ II Interbody SystemAlphatec Spine, Inc. · 2024 · cites it directly4descendants
- K242147Calibrate LTX Interbody System; Calibrate NanoTec LTX Interbody SystemAlphatec Spine, Inc. · 2024 · cites it directly1descendant
- K261020Symmetrix™ L Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2026 · 2 generations on0descendants
- K251575IdentiTi™ II ALIF Standalone Interbody System; Transcend™ ALIF Standalone Interbody SystemAlphatec Spine · 2025 · 2 generations on0descendants
- K251080IdentiTi II Cervical Interbody SystemAlphatec Spine, Inc. · 2025 · 2 generations on0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −31 | K841189 | Oec/Rezaian Spinal Fixator | Orthopedic Equipment Co., Inc. | 1984 | — |
| −30 | K990148 | Stackable Cage System | Depuy Motech Acromed | 1999 | — |
| −29 | K003043 | Surgical Titanium Mesh System | Depuyacromed | 2001 | — |
| −28 | K022793 | Tetris Spinal Implant | Signus Medical, LLC | 2003 | — |
| −27 | K031757 | Peek Tetris Spinal Implant | Signus Medical, LLC | 2003 | — |
| −26 | K041888 | Curved Peek Tetris Spinal Implant | Signus Medizintechnik GmbH | 2004 | — |
| −25 | K042930 | Spacevision Cage System | Spine Vision, Inc. | 2004 | — |
| −24 | K062759 | Paramount VBR System | Innovative Spinal Technologies, Inc. | 2007 | — |
| −23 | K072120 | Paramount Intervertebral Body Fusion Device | Innovative Spinal Technologies, Inc. | 2007 | — |
| −22 | K073291 | Capstone Spinal System | Medtronic Sofamor Danek USA, Inc. | 2008 | — |
| −21 | K094025 | Crescent Spinal System | Medtronic Sofamor Danek | 2010 | — |
| −20 | K110543 | Crescent (R) Spinal System Titanium | Medtronic Sofamor Danek USA, Inc. | 2011 | — |
| −19 | K121683 | Acculif TL Cage | Coalign Innovations, Inc. | 2012 | — |
| −18 | K123752 | Acculif TL and PL Cage | Coalign Innovations, Inc. | 2013 | — |
| −17 | K132505 | Acculif TL and PL Cage | Coalign Innovations, Inc. | 2013 | 3 |
| −16 | K141217 | Acculif TL and PL Cage | Stryker Corporation | 2014 | 3 |
| −15 | K143163 | AVS® AL and ALign PEEK Spacers, AVS® PL and UniLIF PEEK Spacers, AVS® TL PEEK… | Stryker Corporation | 2015 | — |
| −14 | K143616 | AccuLIF TL and PL Cage | Stryker Corporation | 2015 | 4 |
| −13 | K152304 | Tritanium PL Cage | Stryker | 2015 | 1 |
| −12 | K160955 | Tritanium® PL Cage | Stryker | 2016 | — |
| −11 | K162262 | Tritanium® PL Cage | Stryker | 2016 | — |
| −10 | K171496 | Tritanium C Anterior Cervical Cage | Stryker Spine | 2017 | — |
| −9 | K180364 | HD LifeSciences Cervical IBFD System | Hd Lifesciences, LLC | 2018 | — |
| −8 | K183557 | Endoskeleton® TA Interbody Fusion Device, Endoskeleton® TAS Interbody Fusion… | Titan Spine, Inc. | 2019 | 3 |
| −7 | K192018 | Endoskeleton TA Interbody Fusion Device, Endoskeleton TAS and TAS… | Titan Spine, Inc. | 2019 | 4 |
| −6 | K191581 | Endoskeleton TL Interbody Fusion Device, Endoskeleton TL Hyperlordotic… | Titan Spine, Inc. | 2020 | — |
| −5 | K201267 | Adaptix Interbody System with Titan nanoLOCK Surface Technology | Medtronic Sofamor Danek | 2020 | — |
| −4 | K210425 | Catalyft PL Expandable Interbody System | Medtronic Sofamor Danek USA, Inc. | 2021 | 1 |
| −3 | K212524 | Anteralign Spinal System with Titan nanoLOCK Surface Technology | Medtronic Sofamor Danek USA, Inc. | 2021 | — |
| −2 | K214010 | Anteralign Spinal System with Titan nanoLOCK Surface Technology | Medtronic Sofamor Danek USA | 2022 | — |
| −1 | K222028 | IdentiTi™ Porous Ti Interbody System, IdentiTi™ NanoTec™ Interbody System… | Alphatec Spine | 2022 | — |
| 0 (this device) | K223611 | Calibrate LTX Interbody System | Alphatec Spine, Inc. | 2023 | — |
| +1 | K242364 | IdentiTi™ II Interbody System | Alphatec Spine, Inc. | 2024 | — |
| +1 | K242147 | Calibrate LTX Interbody System; Calibrate NanoTec LTX Interbody System | Alphatec Spine, Inc. | 2024 | — |
| +2 | K261020 | Symmetrix™ L Spinal System | Medtronic Sofamor Danek USA, Inc. | 2026 | — |
| +2 | K251575 | IdentiTi™ II ALIF Standalone Interbody System; Transcend™ ALIF Standalone… | Alphatec Spine | 2025 | — |
| +2 | K251080 | IdentiTi II Cervical Interbody System | Alphatec Spine, Inc. | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1976 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 11 | 0 |
| 1993 | 8 | 0 |
| 1994 | 15 | 0 |
| 1995 | 21 | 0 |
| 1996 | 23 | 0 |
| 1997 | 21 | 0 |
| 1998 | 34 | 0 |
| 1999 | 24 | 0 |
| 2000 | 36 | 0 |
| 2001 | 45 | 0 |
| 2002 | 42 | 0 |
| 2003 | 51 | 0 |
| 2004 | 67 | 0 |
| 2005 | 57 | 0 |
| 2006 | 42 | 0 |
| 2007 | 41 | 0 |
| 2008 | 83 | 1 |
| 2009 | 63 | 0 |
| 2010 | 55 | 1 |
| 2011 | 70 | 0 |
| 2012 | 48 | 0 |
| 2013 | 52 | 0 |
| 2014 | 50 | 0 |
| 2015 | 45 | 0 |
| 2016 | 42 | 0 |
| 2017 | 37 | 0 |
| 2018 | 18 | 0 |
| 2019 | 13 | 0 |
| 2020 | 14 | 0 |
| 2021 | 7 | 0 |
| 2022 | 2 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2024 | 2 | 0 |
| 2025 | 4 | 0 |
| 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.
2 devices in this family have 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 MAX device
- #1 K203714 NuVasive Thoracolumbar Interbody Systems…score 102.5 · 24 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 |
|---|---|---|---|
| * | K222028 | IdentiTi™ Porous Ti Interbody System, IdentiTi™ NanoTec™ Interbody System, Transcend™…Summary page 4…Trade Name Manufacturer Primary Predicate Device MAX, OVD, IdentiTi and Transcend Interbody K222028 Alphatec Spine PHM… | 2022 |
| * | K222455 | Calibrate LTX Interbody SystemSummary page 4…Alphatec Spine PHM Systems Additional Predicate Devices MAX, OVD, K222455 Calibrate LTX Interbody System Alphatec Spine PHM IV. DEVICE… | 2022 |
What descends from it? (7)
2 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (2 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.
What does this lineage say?
- The line of descent spans 39 years and passes through 18 companies; a new generation was cleared every 8 months on median.
- 125 of the 1,191 ancestors have a recall of any class; 2 have a Class I recall.
- Of its descendants, K242364 (Alphatec Spine, Inc., 2024) has gone furthest, with 4 descendants of its own.
- 8 other devices also cite its predicate K222028.
How does its category compare?
All MAX devicesMAX Intervertebral Fusion Device With Bone Graft, Lumbar: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · MAX
29in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MAX
85in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MAX
5in 2025
Class I (1 since 2007) Class II/III not classified
Adverse event reports per year · MAX
811in 2025
MAUDE reports naming product code MAX, 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 | 7 | 86 | 0 | 12 |
| 2008 | 35 | 88 | 2 | 19 |
| 2009 | 31 | 102 | 9 | 90 |
| 2010 | 29 | 137 | 0 | 154 |
| 2011 | 49 | 98 | 3 | 201 |
| 2012 | 48 | 69 | 11 (1) | 327 |
| 2013 | 58 | 102 | 0 | 380 |
| 2014 | 58 | 115 | 3 | 366 |
| 2015 | 53 | 113 | 1 | 524 |
| 2016 | 64 | 124 | 6 | 647 |
| 2017 | 76 | 116 | 1 | 596 |
| 2018 | 64 | 114 | 4 | 616 |
| 2019 | 60 | 131 | 1 | 699 |
| 2020 | 56 | 106 | 0 | 640 |
| 2021 | 53 | 109 | 0 | 622 |
| 2022 | 41 | 95 | 1 | 618 |
| 2023 | 30 | 87 | 0 | 576 |
| 2024 | 38 | 91 | 1 | 729 |
| 2025 | 29 | 85 | 5 | 811 |
| 2026 | 18 | 95 | 0 | — |
What is it indicated for?
The Calibrate LTX Interbody System is indicated for spinal fusion procedures from T1 to S1 in skeletally mature patients for the treatment of a symptomatic degenerative disc disease (DDD), degenerative spondylolisthesis, spinal stenosis, and/or thoracic disc herniation (myelopathy and/or radiculopathy with or without axial pain) at one or two adjacent levels. DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by…
Read the full statement (201 words)
The Calibrate LTX Interbody System is indicated for spinal fusion procedures from T1 to S1 in skeletally mature patients for the treatment of a symptomatic degenerative disc disease (DDD), degenerative spondylolisthesis, spinal stenosis, and/or thoracic disc herniation (myelopathy and/or radiculopathy with or without axial pain) at one or two adjacent levels. DDD is defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies.
Additionally, the Calibrate LTX Interbody System can be used as an adjunct to fusion in patients diagnosed with multilevel degenerative scoliosis and sagittal deformity.
The Calibrate LTX Interbody System is intended for use on patients who have had at least six months of non-operative treatment. It is intended to be used with autograft and/or allogenic bone graft comprised of cortical, cancellous, and/or corticocancellous bone, and/or demineralized allograft bone with bone marrow aspirate and supplemental fixation systems that are cleared by FDA for use in the thoracic and lumbar spine.
Calibrate LTX spacers expanded greater than 20° must be used with the provided bone screws in addition to supplemental fixation. Calibrate LTX spacers without integrated fixation features may be used with AMP-X System as integrated fixation in addition to supplemental fixation.
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/K223611 · printed Nov 6, 2026
Cite this page
510(k) Report. “K223611: Calibrate LTX Interbody System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K223611
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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