# K800742: Liberator/Stroller II System

- Pathway: 510(k) (Traditional)
- Applicant: Cryogenic Assoc.
- Decided: May 23, 1980 after 50 days
- Product code: BYJ (Unit, Liquid-Oxygen, Portable)
- Device class: 2
- Regulation: 21 CFR 868.5655
- Recalls of this device: 4 (4 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
8 later devices descend from it; 1 cites it directly.
1 of 9 devices in its family (counting itself) has a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K013251: Spirit 300 (2001), 7 descendants of its own
- K072011: Copd Liquid Oxygen Portable, Model 300P (2007), 3 descendants of its own
- K090421: Model 350G Gas Conserver (2009), 2 descendants of its own
- K050153: Spirit, Model Has (2005), 1 descendant of its own
- K221014: Effortless Oxygen Conserver System Models Effortless Pro and Effortless Mobile (2022), 0 descendants of its own

## Recalls of this device
- Oct 10, 2022 · Class I · Z-0339-2023: An audit discovered some inconsistencies in weld penetration on the longitudinal weld seam on the inner bottle of the device on some of the units.
- Oct 10, 2022 · Class I · Z-0336-2023: An audit discovered some inconsistencies in weld penetration on the longitudinal weld seam on the inner bottle of the device on some of the units.
- Oct 10, 2022 · Class I · Z-0338-2023: An audit discovered some inconsistencies in weld penetration on the longitudinal weld seam on the inner bottle of the device on some of the units.
- Oct 10, 2022 · Class I · Z-0337-2023: An audit discovered some inconsistencies in weld penetration on the longitudinal weld seam on the inner bottle of the device on some of the units.

Source page: https://510kreport.com/device/K800742
Methodology: https://510kreport.com/methodology