# K252920: ELEOS™ Limb Salvage System with NanoCept® Technology

- Pathway: 510(k) (Special)
- Applicant: Onkos Surgical, Inc.
- Decided: Oct 15, 2025 after 33 days
- Product code: QZZ (Limb And Joint Salvage Device With Coating For Bacteria Reduction)
- Device class: 2
- Regulation: 21 CFR 888.3900
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K932222 (1994). 6 ancestors in all.
No later device cites it as a predicate yet.
0 of 7 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- DEN210058: ELEOSx™ Limb Salvage System, Onkos Surgical (2024) Summary page 5.
- K161520: ELEOS Limb Salvage System, Onkos Surgical, Inc. (2016) Summary page 5.

## Indications for use
The ELEOS™ and ELEOS™ Limb Salvage System with NanoCept® Technology 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™ and ELEOS™ Limb Salvage System with NanoCept® Technology 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 ELEOS™ Limb Salvage System with NanoCept® Technology 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.

Source page: https://510kreport.com/device/K252920
Methodology: https://510kreport.com/methodology