# K971889: Chad Total O2 Delivery System

- Pathway: 510(k) (Traditional)
- Applicant: Chad Therapeutics, Inc.
- Decided: Nov 17, 1997 after 180 days
- Product code: CAW (Generator, Oxygen, Portable)
- Device class: 2
- Regulation: 21 CFR 868.5440
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
6 later devices descend from it; 4 cite 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)
- None. FDA’s file for it is a 510(k) statement, which names no predicate.

## Most influential descendants
- K013472: Total O2 (2001), 4 descendants of its own
- K053240: Devilbiss Oxygen Cylinder Filling System, 535 Series (2006), 2 descendants of its own
- K091191: Gas Transfill (2009), 1 descendant of its own
- K141967: Purefill Oxygen Compressor (2014), 0 descendants of its own
- K091028: Omni 5 Total O2 Delivery System (2009), 0 descendants of its own

## Indications for use
The TOTAL O2™ Delivery System is indicated for Supplemental Medical Oxygen for treatment of Respiratory Diseases.

Source page: https://510kreport.com/device/K971889
Methodology: https://510kreport.com/methodology