# K022684: Portable Therapeutic Oxygen Concentration System (Ptocs)

- Pathway: 510(k) (Abbreviated)
- Applicant: Essex Cryogenics of Missouri, Inc.
- Decided: Sep 11, 2002 after 30 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
Longest line of descent: 1 generation back to K904087 (1990). 2 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K013223: Patient Ventilation Oxygen Concentrating System (Pvocs), Litton Systems, Inc. (2002)
- K904087: Mobilaire Iii and V Model Irc 301 and 501 Oxy. Con, Invacare Corp. (1990) Summary page 1.

## Most influential descendants
- K131990: Oxygen Generator Liquefier - (Ogl) (2014), 0 descendants of its own

## Indications for use
Provides supplemental therapeutic oxygen to a patient in a military field hospital setting.

Source page: https://510kreport.com/device/K022684
Methodology: https://510kreport.com/methodology