# K042142: Chad Therapeutics Lotus, Models OM-700 and OM-700S

- Pathway: 510(k) (Special)
- Applicant: Chad Therapeutics, Inc.
- Decided: Sep 20, 2004 after 42 days
- Product code: NFB (Conserver, Oxygen)
- Device class: 2
- Regulation: 21 CFR 868.5905
- 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 K003455 (2000). 1 ancestor in all.
3 later devices descend from it; 1 cites it directly.
0 of 5 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K003455: Modification to Chad Therapeutics Oxymatic Model 401, Chad Therapeutics, Inc. (2000) Summary page 1.

## Most influential descendants
- K103392: Chad Therapeutic Evolution Electronic Oxygen Conserver (2010), 2 descendants of its own
- K113111: Chad Therapeutic Evolution Electronic Oxygen Conserver with Motion (2011), 1 descendant of its own
- K220591: Proxima (2022), 0 descendants of its own

## Indications for use
The Chad Therapeutics Lotus (modified Chad Therapeutics OXYMATIC Model 411) is intended for use in the same manner as the unmodified device, i.e., for prescription use only, to be used as part of a portable oxygen delivery system for patients that require supplemental oxygen up to 6 liters per minute, in their home and for ambulatory use.

Source page: https://510kreport.com/device/K042142
Methodology: https://510kreport.com/methodology