# K071581: Backpack Medical Oxygen System

- Pathway: 510(k) (Traditional)
- Applicant: Essex Cryogenics of Missouri, Inc.
- Decided: Jul 11, 2007 after 33 days
- Product code: BYJ (Unit, Liquid-Oxygen, Portable)
- Device class: 2
- Regulation: 21 CFR 868.5655
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K880183 (1988). 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)
- K033000: Next Generation Portable Therapeutic Liquid Oxygen System, Essex Cryogenics of Missouri, Inc. (2004) Summary page 1.

## Most influential descendants
- K130068: Dismounted Medical & Supplemental Oxygen System (Dmos) (2013), 0 descendants of its own

## Indications for use
The BMOS is intended to be used by emergency response personnel in military and commercial fields to provide an emergency source of supplemental oxygen for patient/s while being transported from a crisis situation to a health care facility. The BMOS is not intended to be a life sustaining or a life-supporting device.

Source page: https://510kreport.com/device/K071581
Methodology: https://510kreport.com/methodology