510(k) · Cleared
ClearedOxymatictm Electronic Oxgyen Conserver
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Chad Therapeutics, Inc. · NFB Conserver, Oxygen
Cleared on Aug 13, 1985 after a 53-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 4 of the 51 devices in its family, counting itself, have a Class I recall. 50 later devices descend from it.
- Decided
- Aug 13, 1985
- Review
- 53 days
- Class
- Class II
- Product code
- NFB
- Recalls
- None
- Predicates
- 0
50 later devices descend from it, 5 citing it directly. 4 of the 51 devices in this family, counting this one, have a Class I recall.
- This deviceK852650 Oxymatictm Electronic Oxgyen ConserverChad Therapeutics, Inc. · 1985
- Descendant · cites it directly · 42 of its ownK963042 Innosan Travelair S Portable Oxygen Concentrator, Code NO. M407001853Sim Italia S.R.L. · 1996
- Descendant · 2 generations on · 38 of its ownK013931 Omni Oxygen System, Model 1000Sequal Technologies, Inc. · 2002 · Recalled
- Descendant · 3 generations on · 18 of its ownK083163 Omni 2 Oxygen SystemSequal Technologies, Inc. · 2009 · Recalled
- Descendant · 3 generations on · 9 of its ownK120785 Omni 3 Oxygen SystemCaire, Inc. · 2012
- Descendant · 3 generations on · 7 of its ownK093261 MOVESThornhill Research, Inc. · 2010 · Recalled (Class I)
Showing 5 of 50 descendants. See all descendants
Descendants cleared per year
Class I recalls in this family
Most influential descendants
Showing 5 of 50 · See all- K963042Innosan Travelair S Portable Oxygen Concentrator, Code NO. M407001853Sim Italia S.R.L. · 1996 · cites it directly42descendants
- K013931Omni Oxygen System, Model 1000Sequal Technologies, Inc. · 2002 · 2 generations on38descendants
- K083163Omni 2 Oxygen SystemSequal Technologies, Inc. · 2009 · 3 generations on18descendants
- K120785Omni 3 Oxygen SystemCaire, Inc. · 2012 · 3 generations on9descendants
- K093261MOVESThornhill Research, Inc. · 2010 · 3 generations on7descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K852650 | Oxymatictm Electronic Oxgyen Conserver | Chad Therapeutics, Inc. | 1985 | — |
| +1 | K963042 | Innosan Travelair S Portable Oxygen Concentrator, Code NO. M407001853 | Sim Italia S.R.L. | 1996 | — |
| +2 | K013931 | Omni Oxygen System, Model 1000 | Sequal Technologies, Inc. | 2002 | 1 |
| +3 | K083163 | Omni 2 Oxygen System | Sequal Technologies, Inc. | 2009 | 1 |
| +3 | K120785 | Omni 3 Oxygen System | Caire, Inc. | 2012 | — |
| +3 | K093261 | MOVES | Thornhill Research, Inc. | 2010 | Class I |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 2000 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 2 | 0 |
| 2004 | 2 | 0 |
| 2005 | 2 | 0 |
| 2006 | 3 | 0 |
| 2008 | 2 | 0 |
| 2009 | 1 | 0 |
| 2010 | 3 | 1 |
| 2012 | 1 | 0 |
| 2014 | 3 | 0 |
| 2015 | 2 | 0 |
| 2017 | 3 | 1 |
| 2018 | 4 | 0 |
| 2019 | 2 | 1 |
| 2021 | 1 | 1 |
| 2023 | 2 | 0 |
| 2024 | 3 | 0 |
| 2025 | 7 | 0 |
Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
4 devices in this family have a Class I recall. A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new NFB device
- #1 K250322 Respond OC Conserving Regulator (130-0800)score 10.6 · 4 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA has not posted a summary or statement for it, so its predicates are not known.
What descends from it? (50)
See all 505 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (4 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
- K093261MOVESThornhill Research, Inc. · 2010 · 3 generations on · ◆ in the 2010 descendants bar of FIG. 12 Class I recalls
- K162877VOCSN Unified Respiratory SystemVentec Life Systems, Inc. · 2017 · 4 generations on · ◆ in the 2017 descendants bar of FIG. 114 Class I recalls
- K181166Trilogy EvoRespironics, Inc. · 2019 · 5 generations on · ◆ in the 2019 descendants bar of FIG. 131 Class I recalls
- K193586Vivo 45 LSBreas Medical AB · 2021 · 6 generations on · ◆ in the 2021 descendants bar of FIG. 11 Class I recall
What does this lineage say?
- Of its descendants, K963042 (Sim Italia S.R.L., 1996) has gone furthest, with 42 descendants of its own.
How does its category compare?
All NFB devicesNFB Conserver, Oxygen: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · NFB
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · NFB
Too few NFB 510(k)s in any year since 2007 to give a median.
Recalls per year · NFB
3in 2007
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · NFB
8in 2025
MAUDE reports naming product code NFB, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 1 | — | 3 | 3 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 1 | — | 0 | 1 |
| 2012 | 0 | — | 0 | 3 |
| 2013 | 1 | — | 0 | 5 |
| 2014 | 0 | — | 0 | 2 |
| 2015 | 0 | — | 0 | 4 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 9 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 1 | — | 0 | 3 |
| 2021 | 0 | — | 0 | 2 |
| 2022 | 2 | — | 0 | 1 |
| 2023 | 0 | — | 0 | 4 |
| 2024 | 0 | — | 0 | 1 |
| 2025 | 1 | — | 0 | 8 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K852650 · printed Nov 5, 2026
Cite this page
510(k) Report. “K852650: Oxymatictm Electronic Oxgyen Conserver.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K852650
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026