510(k) Report

De Novo · Granted

Granted

ELEOSx™ Limb Salvage System

DEN210058De NovoGranted Apr 5, 2024827-day reviewClass II21 CFR 888.3900

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

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.

Descendants, by year cleared 2025: 1 descendant cleared2026: 1 descendant cleared2020202220242026
  1. This deviceDEN210058 ELEOSx™ Limb Salvage SystemOnkos Surgical · 2024
  2. Descendant · cites it directly · 0 of its ownK253066 ELEOS™ with NanoCept® Technology Limb Salvage SystemOnkos Surgical, Inc. · 2026
  3. 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 all
  • K253066ELEOS™ with NanoCept® Technology Limb Salvage SystemOnkos Surgical, Inc. · 2026 · cites it directly0descendants
  • K252920ELEOS™ Limb Salvage System with NanoCept® TechnologyOnkos Surgical, Inc. · 2025 · cites it directly0descendants
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
0 (this device)DEN210058ELEOSx™ Limb Salvage SystemOnkos Surgical2024—
+1K253066ELEOS™ with NanoCept® Technology Limb Salvage SystemOnkos Surgical, Inc.2026—
+1K252920ELEOS™ Limb Salvage System with NanoCept® TechnologyOnkos Surgical, Inc.2025—

Descendants by year cleared

Year clearedDevicesWith a Class I recall
202510
202610
FIG. 1 — Lineage of DEN210058, 2024–2026Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

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. #1 K253066 ELEOS™ with NanoCept® Technology Limb Salvage…score 11.8 · 2 generations · no Class I recall
  2. #2 Held for the reportin the report
Get a 510(k) 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.

NumberDeviceApplicantDecidedDescendants
K253066ELEOS™ with NanoCept® Technology Limb Salvage SystemOnkos Surgical, Inc.20260
K252920ELEOS™ Limb Salvage System with NanoCept® TechnologyOnkos Surgical, Inc.20250

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 devices

QZZ 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

2024: 12025: 12026 (partial year): 1
2007high 1 (2024) · low 0 (2007)2026

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

2025: 30
2007high 30 (2025) · low 0 (2007)2025

MAUDE reports naming product code QZZ, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20070—00
20080—00
20090—00
20100—00
20110—00
20120—00
20130—00
20140—00
20150—00
20160—00
20170—00
20180—00
20190—00
20200—00
20210—00
20220—00
20230—00
20241—00
20251—030
20261—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.

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