# K212294: Ethos Treatment Management, Ethos Treatment Planning

- Pathway: 510(k) (Special)
- Applicant: Varian Medical Systems, Inc.
- Decided: Aug 20, 2021 after 29 days
- Product code: IYE (Accelerator, Linear, Medical)
- Device class: 2
- Regulation: 21 CFR 892.5050
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 16 generations back to K010975 (2001). 62 ancestors in all.
4 later devices descend from it; 2 cite it directly.
0 of 67 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K192377: Ethos Treatment Management, Ethos Treatment Planning, Ethos Radiotherapy System, Halcyon, Varian Medical Systems, Inc. (2020) Summary page 4.

## Most influential descendants
- K232479: ART-Plan (2023), 2 descendants of its own
- K253078: ART.1-US (2026), 0 descendants of its own
- K232923: Ethos Treatment Management (3.0); Ethos Treatment Planning (2.0) (2024), 0 descendants of its own
- K234068: ART-Plan (v.2.2.0) (2024), 0 descendants of its own

## Indications for use
Ethos Treatment Management is indicated for use in managing and monitoring radiation therapy treatment plans and sessions. Ethos Treatment Planning is indicated for use in generating and modifying radiation therapy treatment plans.

Source page: https://510kreport.com/device/K212294
Methodology: https://510kreport.com/methodology