# K240442: MagnetOs Putty

- Pathway: 510(k) (Traditional)
- Applicant: Kuros Biosciences B.V
- Decided: Apr 1, 2024 after 47 days
- Product code: MQV (Filler, Bone Void, Calcium Compound)
- Device class: 2
- Regulation: 21 CFR 888.3045
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 25 generations back to K841189 (1984). 317 ancestors in all.
3 later devices descend from it; 3 cite it directly.
1 of 321 devices in its family (counting itself) has a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K203714: NuVasive Thoracolumbar Interbody Systems: NuVasive CoRoent Thoracolumbar System, NuVasive CoRoent XL Interfixated System, Brigade System, Brigade Lateral System, BASE Interfixated Titanium System, Coalesce Thoracolumbar Interbody Fusion System, NuVasive Cohere Thoracolumbar Interbody System, NuVasive Modulus XLIF Interbody System, NuVasive Modulus TLIF Interbody System, NuVasive Modulus ALIF System, NuVasive Attrax Putty, Nu Vasive, Incorporated (2021) Summary page 5.
- K230736: MagnetOs Putty, Kuros Biosciences B.V (2023) Summary page 5.

## Most influential descendants
- K241212: MagnetOs Easypack Putty (2024), 1 descendant of its own
- K262230: Mg OSTEOREVIVE™;Mg OSTEOCRETE™ (2026), 0 descendants of its own
- K243474: MagnetOs MIS (2025), 0 descendants of its own

## Indications for use
MagnetOs Putty is an implant intended to fill bony voids or gaps of the skeletal system, i.e., the extremities, pelvis, intervertebral disc space, and posterolateral spine. These osseous defects may be surgically created or the result of traumatic injury to the bone and are not intrinsic to the stability of the bony structure. MagnetOs Putty may be used standalone or mixed with autograft. When used in intervertebral body fusion procedures, MagnetOs Putty must also be used with an intervertebral body fusion device cleared by FDA for use with a bone void filler. MagnetOs Putty resorbs and is replaced with bone during the healing process.

Source page: https://510kreport.com/device/K240442
Methodology: https://510kreport.com/methodology