# K833994: Pulsair I & II

- Pathway: 510(k) (Traditional)
- Applicant: Cryo Corp.
- Decided: Dec 12, 1983 after 21 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
No predicates in its family tree.
9 later devices descend from it; 2 cite it directly.
0 of 10 devices in its family (counting itself) have 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

Source page: https://510kreport.com/device/K833994
Methodology: https://510kreport.com/methodology