510(k) · Cleared
ClearedChad Therapeutics Bonsai Model 800
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 May 7, 2007 as substantially equivalent to K020475 (Chad Therapeutics, Inc., 2002) after a 52-day review. Its family tree reaches back 3 generations to 1996. 1 later device descends from it.
- Decided
- May 7, 2007
- Review
- 52 days
- Class
- Class II
- Product code
- NFB
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 3 generations to K963247 (1996). 5 ancestors in all. 1 later device descends from it, 1 citing it directly.
- Root · 3 generations backK963247 Victor Model Ocpr Oxygen Conserving Pressure RegulatorThermadyne Holings Corp. · 1996
- 2 generations backK992659 O2N Demand-II, Victor Model Ocpr-IIThermadyne Holings Corp. · 1999
- 1 generation backK020475 Chad Therapeutics Oxypenumatic Cypress Model 511Chad Therapeutics, Inc. · 2002
- This deviceK070740 Chad Therapeutics Bonsai Model 800Chad Therapeutics, Inc. · 2007
- Descendant · cites it directly · 0 of its ownK250322 Respond OC Conserving Regulator (130-0800)Responsive Respiratory · 2025
Most influential descendants
Showing 1 of 1 · See all- K250322Respond OC Conserving Regulator (130-0800)Responsive Respiratory · 2025 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −3 | K963247 | Victor Model Ocpr Oxygen Conserving Pressure Regulator | Thermadyne Holings Corp. | 1996 | — |
| −2 | K992659 | O2N Demand-II, Victor Model Ocpr-II | Thermadyne Holings Corp. | 1999 | — |
| −1 | K020475 | Chad Therapeutics Oxypenumatic Cypress Model 511 | Chad Therapeutics, Inc. | 2002 | — |
| 0 (this device) | K070740 | Chad Therapeutics Bonsai Model 800 | Chad Therapeutics, Inc. | 2007 | — |
| +1 | K250322 | Respond OC Conserving Regulator (130-0800) | Responsive Respiratory | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2001 | 2 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2025 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in NFB? 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? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K020475 | Chad Therapeutics Oxypenumatic Cypress Model 511Summary page 1…Predicate Device Equivalence: Substantial equivalence is claimed to the Chad Therapeutics Unmodified OXYPNEUMATIC CYPRESS 511, cleared for commercial distribution per K020475. Device Description: The Chad Therapeutics Bonsai a pneumatic-controlled device, which is a combination of a low… | 2002 |
| † | K884562 | Oxymatic-24 | 1989 |
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K250322 | Respond OC Conserving Regulator (130-0800) | 2025 | 0 |
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 11 years and passes through 2 companies; a new generation was cleared every 2.8 years on median.
- 1 of the 5 ancestors has a recall of any class.
- Of its descendants, K250322 (Responsive Respiratory, 2025) has gone furthest, with 0 descendants of its own.
- 1 other device also cites its predicate K020475.
How does its category compare?
All NFB devicesNFB Conserver, Oxygen: FDA decisions, review times, recalls and adverse event reports over 20 years. 2007, this device’s year, is highlighted.
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 | — |
What is it indicated for?
The Chad Therapeutics Bonsai (modified Chad Therapeutics OXYPNEUMATIC CYPRESS Model 511) 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 in their home and for ambulatory use.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K070740 · printed Nov 5, 2026
Cite this page
510(k) Report. “K070740: Chad Therapeutics Bonsai Model 800.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K070740
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026