510(k) · Cleared
ClearedCatamaran SI Joint Fusion System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Tenon Medical · OUR Sacroiliac Joint Fixation
Cleared on Mar 21, 2025 as substantially equivalent to K231944 (Tenon Medical, Inc., 2023) and 2 other predicates after a 37-day review. Its family tree reaches back 17 generations to 1984. 1 later device descends from it.
- Decided
- Mar 21, 2025
- Review
- 37 days
- Class
- Class II
- Product code
- OUR
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 17 generations to K841189 (1984). 134 ancestors in all. 1 later device descends from it, 1 citing it directly.
- Root · 17 generations backK841189 Oec/Rezaian Spinal FixatorOrthopedic Equipment Co., Inc. · 1984
- 13 generations between
- 3 generations backK161210 RIALTO (TM) SI Fusion System, Medtronic Reusable Instruments for Use…Medtronic Sofamor Danek · 2016
- 2 generations backK180818 Catamaran Sacroiliac Joint Fixation System (CAT SIJ Fixation System)Tenon Medical, Inc. · 2018
- 1 generation backK231944 CATAMARAN SI Joint Fusion SystemTenon Medical, Inc. · 2023
- This deviceK250403 Catamaran SI Joint Fusion SystemTenon Medical · 2025
- Descendant · cites it directly · 0 of its ownK260477 CATAMARAN™ SI Joint Fusion SystemTenon Medical · 2026
Show all 17 generations
- Root · 17 generations backK841189 Oec/Rezaian Spinal FixatorOrthopedic Equipment Co., Inc. · 1984
- 16 generations backK990148 Stackable Cage SystemDepuy Motech Acromed · 1999
- 15 generations backK003043 Surgical Titanium Mesh SystemDepuyacromed · 2001
- 14 generations backK022793 Tetris Spinal ImplantSignus Medical, LLC · 2003
- 13 generations backK031757 Peek Tetris Spinal ImplantSignus Medical, LLC · 2003
- 12 generations backK041888 Curved Peek Tetris Spinal ImplantSignus Medizintechnik GmbH · 2004
- 11 generations backK042930 Spacevision Cage SystemSpine Vision, Inc. · 2004
- 10 generations backK062759 Paramount VBR SystemInnovative Spinal Technologies, Inc. · 2007
- 9 generations backK072120 Paramount Intervertebral Body Fusion DeviceInnovative Spinal Technologies, Inc. · 2007
- 8 generations backK073291 Capstone Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2008
- 7 generations backK100175 Clydesdale Spinal SystemMedtronic Sofamor Danek · 2010
- 6 generations backK112405 Clydesdales Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2011
- 5 generations backK131425 Navigated Capstone Trials, Clydesdale Trials, Capstone & Clydesdale…Medtronic Navigation, Inc. · 2013 · Recalled
- 4 generations backK150231 Navigated Disc Prep Instruments and CAPSTONE TrialsMedtronic Sofamor Danek USA, Inc. · 2015
- 3 generations backK161210 RIALTO (TM) SI Fusion System, Medtronic Reusable Instruments for Use…Medtronic Sofamor Danek · 2016
- 2 generations backK180818 Catamaran Sacroiliac Joint Fixation System (CAT SIJ Fixation System)Tenon Medical, Inc. · 2018
- 1 generation backK231944 CATAMARAN SI Joint Fusion SystemTenon Medical, Inc. · 2023
- This deviceK250403 Catamaran SI Joint Fusion SystemTenon Medical · 2025
Most influential descendants
Showing 1 of 1 · See all- K260477CATAMARAN™ SI Joint Fusion SystemTenon Medical · 2026 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −17 | K841189 | Oec/Rezaian Spinal Fixator | Orthopedic Equipment Co., Inc. | 1984 | — |
| −16 | K990148 | Stackable Cage System | Depuy Motech Acromed | 1999 | — |
| −15 | K003043 | Surgical Titanium Mesh System | Depuyacromed | 2001 | — |
| −14 | K022793 | Tetris Spinal Implant | Signus Medical, LLC | 2003 | — |
| −13 | K031757 | Peek Tetris Spinal Implant | Signus Medical, LLC | 2003 | — |
| −12 | K041888 | Curved Peek Tetris Spinal Implant | Signus Medizintechnik GmbH | 2004 | — |
| −11 | K042930 | Spacevision Cage System | Spine Vision, Inc. | 2004 | — |
| −10 | K062759 | Paramount VBR System | Innovative Spinal Technologies, Inc. | 2007 | — |
| −9 | K072120 | Paramount Intervertebral Body Fusion Device | Innovative Spinal Technologies, Inc. | 2007 | — |
| −8 | K073291 | Capstone Spinal System | Medtronic Sofamor Danek USA, Inc. | 2008 | — |
| −7 | K100175 | Clydesdale Spinal System | Medtronic Sofamor Danek | 2010 | — |
| −6 | K112405 | Clydesdales Spinal System | Medtronic Sofamor Danek USA, Inc. | 2011 | — |
| −5 | K131425 | Navigated Capstone Trials, Clydesdale Trials, Capstone & Clydesdale Inserter | Medtronic Navigation, Inc. | 2013 | 10 |
| −4 | K150231 | Navigated Disc Prep Instruments and CAPSTONE Trials | Medtronic Sofamor Danek USA, Inc. | 2015 | — |
| −3 | K161210 | RIALTO (TM) SI Fusion System, Medtronic Reusable Instruments for Use with the… | Medtronic Sofamor Danek | 2016 | — |
| −2 | K180818 | Catamaran Sacroiliac Joint Fixation System (CAT SIJ Fixation System) | Tenon Medical, Inc. | 2018 | — |
| −1 | K231944 | CATAMARAN SI Joint Fusion System | Tenon Medical, Inc. | 2023 | — |
| 0 (this device) | K250403 | Catamaran SI Joint Fusion System | Tenon Medical | 2025 | — |
| +1 | K260477 | CATAMARAN™ SI Joint Fusion System | Tenon Medical | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 8 | 0 |
| 2003 | 4 | 0 |
| 2004 | 6 | 0 |
| 2005 | 7 | 0 |
| 2006 | 3 | 0 |
| 2008 | 5 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 0 |
| 2011 | 6 | 0 |
| 2012 | 2 | 0 |
| 2013 | 4 | 0 |
| 2014 | 2 | 0 |
| 2015 | 3 | 0 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 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.
Planning a device in OUR? 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 OUR device
- #1 K233508 iFuse Bedrock Granite® Implant Systemscore 30.7 · 31 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 |
|---|---|---|---|
| * | K231944 | CATAMARAN SI Joint Fusion SystemSummary page 5…ner Product Code: OUR Predicate Devices: Primary: CATAMARANTM Sacroiliac Joint Fixation System, Tenon Medical (K231944) Additional: SI-BONE iFuse Implant System®, SI-Bone, Inc. (K193524)… | 2023 |
| * | K193524 | SI-BONE iFuse Implant System®Summary page 5…Tenon Medical (K231944) Additional: SI-BONE iFuse Implant System®, SI-Bone, Inc. (K193524) Device Description: The Catamaran SI Joint Fusion System is intended for sacroiliac joint fusion for conditions including sacroi… | 2020 |
| * | K180818 | Catamaran Sacroiliac Joint Fixation System (CAT SIJ Fixation System)Summary page 6…same technological characteristics and principles of operation as compared to the predicate device; the Catamaran Sacroiliac Joint Fixation System cleared in K231944 and K180818. The sole purpose of this submission is to modify the indications for use. The new indications for use do not raise any new types… | 2018 |
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 |
|---|---|---|---|
| K260477 | CATAMARAN™ SI Joint Fusion System | 2026 | 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 41 years and passes through 12 companies; a new generation was cleared every 1.7 years on median.
- 19 of the 134 ancestors have a recall of any class.
- Of its descendants, K260477 (Tenon Medical, 2026) has gone furthest, with 0 descendants of its own.
- 2 other devices also cite its predicate K231944.
How does its category compare?
All OUR devicesOUR Sacroiliac Joint Fixation: FDA decisions, review times, recalls and adverse event reports over 20 years. 2025, this device’s year, is highlighted.
FDA decisions per year · OUR
14in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · OUR
97in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · OUR
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · OUR
10in 2025
MAUDE reports naming product code OUR, 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 | 0 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 3 | 27 | 0 | 6 |
| 2012 | 2 | — | 0 | 81 |
| 2013 | 4 | 103 | 0 | 96 |
| 2014 | 3 | 91 | 0 | 146 |
| 2015 | 8 | 111 | 0 | 119 |
| 2016 | 6 | 168 | 0 | 122 |
| 2017 | 4 | 120 | 0 | 157 |
| 2018 | 7 | 82 | 0 | 137 |
| 2019 | 7 | 89 | 0 | 175 |
| 2020 | 7 | 88 | 0 | 148 |
| 2021 | 9 | 85 | 0 | 154 |
| 2022 | 14 | 149 | 0 | 23 |
| 2023 | 20 | 55 | 0 | 7 |
| 2024 | 15 | 74 | 0 | 15 |
| 2025 | 14 | 97 | 1 | 10 |
| 2026 | 6 | 98 | 1 | — |
What is it indicated for?
The Tenon Medical Catamaran SI Joint Fusion System is intended for sacroiliac joint fusion for conditions including:
Sacroiliac joint disruptions and degenerative sacroiliitis
To augment immobilization and stabilization of the sacroiliac joint in skeletally mature patients undergoing sacropelvic fixation as part of a lumbar or thoracolumbar 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/K250403 · printed Nov 6, 2026
Cite this page
510(k) Report. “K250403: Catamaran SI Joint Fusion System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K250403
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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