510(k) · Cleared
ClearedCasian, 3.5/4.5 Connectors
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
K2m, Inc. · KWP Appliance, Fixation, Spinal Interlaminal
Cleared on Jul 20, 2012 as substantially equivalent to K081107 (K2m, Inc., 2008) and 3 other predicates after a 30-day review. Its family tree reaches back 11 generations to 1985. 1 later device descends from it.
- Decided
- Jul 20, 2012
- Review
- 30 days
- Class
- Class II
- Product code
- KWP
- Recalls
- None
- Predicates
- 4
Its longest line of descent runs back 11 generations to K853033 (1985). 32 ancestors in all. 1 later device descends from it, 1 citing it directly.
- Root · 11 generations backK853033 Hartshill Rect & Wires, Spinal Fixation SystemA.W. Showell (Surgicraft), Ltd. · 1985
- 7 generations between
- 3 generations backK050391 Protex CT Cervicothoracic Spinal SystemGlobus Medical, Inc. · 2005
- 2 generations backK101084 Caspian Spinal SystemK2m, Inc. · 2010
- 1 generation backK103232 Caspian Spinal SystemK2m, Inc. · 2011
- This deviceK121808 Casian, 3.5/4.5 ConnectorsK2m, Inc. · 2012
- Descendant · cites it directly · 0 of its ownK142558 Caspian OCT/MESA Mini/DENALI Mini Spinal SystemK2m · 2014
Show all 11 generations
- Root · 11 generations backK853033 Hartshill Rect & Wires, Spinal Fixation SystemA.W. Showell (Surgicraft), Ltd. · 1985
- 10 generations backK965221 Ransford Cervical Fixation SystemSurgicraft, Ltd. · 1997
- 9 generations backK982322 Synthes Spine Occipital-Cervical Plate/Rod and Hook SystemSynthes (Usa) · 1998
- 8 generations backK002733 Summit Occipito-Cervico-Thoracic (Oct) Spinal SystemDepuyacromed · 2000
- 7 generations backK013222 Summit Occipito-Cervico- Thoracic (Oct) Spinal SystemDepuyacromed · 2001
- 6 generations backK022190 Modification to Summit Occipito-Cervico-Thoracic (Oct) Spinal SystemDepuyacromed · 2002
- 5 generations backK030103 Summit Oct Spinal System Minipolyaxial ScrewsDepuyacromed · 2003
- 4 generations backK041203 Summit Oct Spinal SystemDepuy Spine, Inc. · 2004
- 3 generations backK050391 Protex CT Cervicothoracic Spinal SystemGlobus Medical, Inc. · 2005
- 2 generations backK101084 Caspian Spinal SystemK2m, Inc. · 2010
- 1 generation backK103232 Caspian Spinal SystemK2m, Inc. · 2011
- This deviceK121808 Casian, 3.5/4.5 ConnectorsK2m, Inc. · 2012
Most influential descendants
Showing 1 of 1 · See all- K142558Caspian OCT/MESA Mini/DENALI Mini Spinal SystemK2m · 2014 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −11 | K853033 | Hartshill Rect & Wires, Spinal Fixation System | A.W. Showell (Surgicraft), Ltd. | 1985 | — |
| −10 | K965221 | Ransford Cervical Fixation System | Surgicraft, Ltd. | 1997 | — |
| −9 | K982322 | Synthes Spine Occipital-Cervical Plate/Rod and Hook System | Synthes (Usa) | 1998 | — |
| −8 | K002733 | Summit Occipito-Cervico-Thoracic (Oct) Spinal System | Depuyacromed | 2000 | — |
| −7 | K013222 | Summit Occipito-Cervico- Thoracic (Oct) Spinal System | Depuyacromed | 2001 | — |
| −6 | K022190 | Modification to Summit Occipito-Cervico-Thoracic (Oct) Spinal System | Depuyacromed | 2002 | — |
| −5 | K030103 | Summit Oct Spinal System Minipolyaxial Screws | Depuyacromed | 2003 | — |
| −4 | K041203 | Summit Oct Spinal System | Depuy Spine, Inc. | 2004 | — |
| −3 | K050391 | Protex CT Cervicothoracic Spinal System | Globus Medical, Inc. | 2005 | — |
| −2 | K101084 | Caspian Spinal System | K2m, Inc. | 2010 | — |
| −1 | K103232 | Caspian Spinal System | K2m, Inc. | 2011 | — |
| 0 (this device) | K121808 | Casian, 3.5/4.5 Connectors | K2m, Inc. | 2012 | — |
| +1 | K142558 | Caspian OCT/MESA Mini/DENALI Mini Spinal System | K2m | 2014 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 0 |
| 2004 | 4 | 0 |
| 2007 | 1 | 0 |
| 2008 | 2 | 0 |
| 2009 | 2 | 0 |
| 2011 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2014 | 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 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 |
|---|---|---|---|
| * | K081107 | Caspian Spinal System, Screws, Rods, Hooks, Rod ConnectorsSummary page 1…Regulatory Class: Class 11 3. Predicate or legally marketed devices which are substantially equivalent: * K2M Caspian Spinal System (K081107, K092640, K 103232) " DePuy Mountaineer (KI 10353) 4. Description of the device: The Caspian Spinal System is… | 2008 |
| * | K092640 | Caspian Spinal SystemSummary page 1…tory Class: Class 11 3. Predicate or legally marketed devices which are substantially equivalent: * K2M Caspian Spinal System (K081107, K092640, K 103232) " DePuy Mountaineer (KI 10353) 4. Description of the device: The Caspian Spinal System is a top-loa… | 2009 |
| * | K103232 | Caspian Spinal SystemSummary page 1…s: Class 11 3. Predicate or legally marketed devices which are substantially equivalent: * K2M Caspian Spinal System (K081107, K092640, K 103232) " DePuy Mountaineer (KI 10353) 4. Description of the device: The Caspian Spinal System is a top-loading, mult… | 2011 |
| * | K110353 | Mountaineer Oct Spinal System | 2011 |
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 |
|---|---|---|---|
| K142558 | Caspian OCT/MESA Mini/DENALI Mini Spinal System | 2014 | 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 27 years and passes through 7 companies; a new generation was cleared every 1.3 years on median.
- 1 of the 32 ancestors has a recall of any class.
- Of its descendants, K142558 (K2m, 2014) has gone furthest, with 0 descendants of its own.
- 10 other devices also cite its predicate K081107.
How does its category compare?
All KWP devicesKWP Appliance, Fixation, Spinal Interlaminal: FDA decisions, review times, recalls and adverse event reports over 20 years. 2012, this device’s year, is highlighted.
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 Caspian OCT/mini Mesa/mini Denali Spinal System is intended to provide stabilization as an adjunct to fusion of the cervical spine and occipito-cervico-thoracic junction (occiput-T3) when used with autograft or allograft and is indicated for the following: DDD (neck pain of discogenic origin with degeneration of the disc as confirmed by patient history and radiographic studies), spondylolisthesis, spinal stenosis, fracture/dislocation, revision of…
Read the full statement (148 words)
The Caspian OCT/mini Mesa/mini Denali Spinal System is intended to provide stabilization as an adjunct to fusion of the cervical spine and occipito-cervico-thoracic junction (occiput-T3) when used with autograft or allograft and is indicated for the following: DDD (neck pain of discogenic origin with degeneration of the disc as confirmed by patient history and radiographic studies), spondylolisthesis, spinal stenosis, fracture/dislocation, revision of previous cervical spine surgery, tumors, atlantoaxial fracture with instability, occipitocervical dislocation.
The occipital bone screws are limited to occipital fixation only.
The rod and hook components are intended for use in the cervical/upper thoracic (C1-T3) spine. The pedicle screws are limited to placement in T1-T3 in treating thoracic conditions only. The pedicle screws are not intended to be placed in or treat conditions involving the cervical spine.
The Caspian Spinal System can also be linked to the Range Spinal System using rod connectors or transitional rods.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K121808 · printed Nov 6, 2026
Cite this page
510(k) Report. “K121808: Casian, 3.5/4.5 Connectors.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K121808
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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