De Novo · Granted
GrantedELEOSx™ Limb Salvage System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Onkos Surgical · QZZ Limb And Joint Salvage Device With Coating For Bacteria Reduction
Granted on Apr 5, 2024 as a new device type through De Novo after an 827-day review. 2 later devices descend from it.
- Decided
- Apr 5, 2024
- Review
- 827 days
- Class
- Class II
- Product code
- QZZ
- Recalls
- None
2 later devices descend from it, 2 citing it directly.
- This deviceDEN210058 ELEOSx™ Limb Salvage SystemOnkos Surgical · 2024
- Descendant · cites it directly · 0 of its ownK253066 ELEOS™ with NanoCept® Technology Limb Salvage SystemOnkos Surgical, Inc. · 2026
- Descendant · cites it directly · 0 of its ownK252920 ELEOS™ Limb Salvage System with NanoCept® TechnologyOnkos Surgical, Inc. · 2025
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 |
|---|---|---|---|---|---|
| 0 (this device) | DEN210058 | ELEOSx™ Limb Salvage System | Onkos Surgical | 2024 | — |
| +1 | K253066 | ELEOS™ with NanoCept® Technology Limb Salvage System | Onkos Surgical, Inc. | 2026 | — |
| +1 | K252920 | ELEOS™ Limb Salvage System with NanoCept® Technology | Onkos Surgical, Inc. | 2025 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
Sources: FDA De Novo 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 QZZ? 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 QZZ device
- #1 K253066 ELEOS™ with NanoCept® Technology Limb Salvage…score 11.8 · 2 generations · no Class I recall
- #2 Held for the reportin the report
Does it have a predicate?
De Novo decisions do not claim a predicate device.
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? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K253066 (Onkos Surgical, Inc., 2026) has gone furthest, with 0 descendants of its own.
How does its category compare?
All QZZ devicesQZZ Limb And Joint Salvage Device With Coating For Bacteria Reduction: FDA decisions, review times, recalls and adverse event reports over 20 years. 2024, this device’s year, is highlighted.
FDA decisions per year · QZZ
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · QZZ
Too few QZZ 510(k)s in any year since 2007 to give a median.
Recalls per year · QZZ
No recall names QZZ since 2007.
Adverse event reports per year · QZZ
30in 2025
MAUDE reports naming product code QZZ, 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 | 0 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 0 |
| 2024 | 1 | — | 0 | 0 |
| 2025 | 1 | — | 0 | 30 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
The ELEOS™/ELEOSx™ Limb Salvage System is indicated for resection and replacement of the proximal femur, intercalary portion of the femur, total femur, distal femur, and proximal tibia in skeletally mature patients with the following conditions: 1) Non-inflammatory degenerative joint disease such as osteoarthritis, traumatic arthritis, avascular necrosis, ankylosis, protrusion acetabuli, and painful hip dysplasia; 2) Inflammatory degenerative joint…
Read the full statement (241 words)
The ELEOS™/ELEOSx™ Limb Salvage System is indicated for resection and replacement of the proximal femur, intercalary portion of the femur, total femur, distal femur, and proximal tibia in skeletally mature patients with the following conditions:
1) Non-inflammatory degenerative joint disease such as osteoarthritis, traumatic arthritis, avascular necrosis, ankylosis, protrusion acetabuli, and painful hip dysplasia;
2) Inflammatory degenerative joint disease such as rheumatoid arthritis;
3) Correction of functional deformity;
4) Revision procedures where other treatments or devices have failed; and,
5) Treatment of fractures that are unmanageable using other techniques.
The ELEOS™/ELEOSx™ Limb Salvage System is also indicated for procedures where resection and replacement of the proximal femur, intercalary portion of the femur, total femur, distal femur, and proximal tibia is required with the following conditions:
1) Patients suffering from severe arthropathy of the hip and/or knee that does not respond to any conservative therapy or better alternative surgical treatment;
2) Surgical intervention for severe trauma, revision hip or knee arthroplasties, and/or Oncology indications.
3) Metastatic diseases
The ELEOSx™ MDPB coating, where applied, is intended to reduce bacterial contamination prior to implantation resulting from deposition in the operating room on the surface of the device components. The clinical impact associated with the MDPB coating, including prevention of infection or reduction of infection risk in patients, has not been evaluated in human clinical trials. The MDPB coating is not intended to treat existing infections and does not act within or on the body.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/DEN210058 · printed Nov 6, 2026
Cite this page
510(k) Report. “DEN210058: ELEOSx™ Limb Salvage System.” Lineage record from FDA De Novo data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/DEN210058
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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