# K033364: Chad Therapeutics Sage

- Pathway: 510(k) (Traditional)
- Applicant: Chad Therapeutics, Inc.
- Decided: May 11, 2004 after 203 days
- Product code: NFB (Conserver, Oxygen)
- Device class: 2
- Regulation: 21 CFR 868.5905
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K961126 (1996). 4 ancestors in all.
2 later devices descend from it; 1 cites it directly.
0 of 7 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K000890: Chad Therapeutics Oxymatic Model 401, Chad Therapeutics, Inc. (2000) Summary page 1.
- K003455: Modification to Chad Therapeutics Oxymatic Model 401, Chad Therapeutics, Inc. (2000) Summary page 1.
- K010389: Chad Therapeutics Oxymatic Model 401 and Oxymatic Model 411, Chad Therapeutics, Inc. (2001) Summary page 1.
- K961126: Pulse Dose Series, Devilbiss Health Care, Inc. (1996) Summary page 1.

## Most influential descendants
- K113111: Chad Therapeutic Evolution Electronic Oxygen Conserver with Motion (2011), 1 descendant of its own
- K220591: Proxima (2022), 0 descendants of its own

## Indications for use
The Chad Therapeutics Sage is intended for prescription use only, to be used as part of a portable therapeutic oxygen system for patients that require supplemental oxygen while at rest or during activity.

Source page: https://510kreport.com/device/K033364
Methodology: https://510kreport.com/methodology