510(k) · Cleared
ClearedDryden Bacteria Filter
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Dryden Corp. · CAH Filter, Bacterial, Breathing-Circuit
Cleared on Nov 13, 1979 after a 26-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 10 later devices descend from it.
- Decided
- Nov 13, 1979
- Review
- 26 days
- Class
- Class II
- Product code
- CAH
- Recalls
- None
- Predicates
- 0
10 later devices descend from it, 1 citing it directly.
- This deviceK792097 Dryden Bacteria FilterDryden Corp. · 1979
- Descendant · cites it directly · 9 of its ownK961914 Bacteria/Viral FilterHudson Respiratory Care, Inc. · 1996
- Descendant · 2 generations on · 3 of its ownK052087 Breathing Filter Bacterial/Viral, Model AG7178Ag Industries · 2005
- Descendant · 3 generations on · 2 of its ownK061426 Oxygen Concentrator Filters, Models DBF32, DBF24, DBF27, DBF25…Porous Media Corp. · 2006
- Descendant · 2 generations on · 2 of its ownK043148 All Flow Pulmonary Function FilterAlliance Tech Medical, Inc. · 2004 · Recalled
- Descendant · 4 generations on · 1 of its ownK091363 Compressor Filter, Models AG1038831, HCF100,BF900,BF910,BF950…Ag Industries · 2010
Showing 5 of 10 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 10 · See all- K961914Bacteria/Viral FilterHudson Respiratory Care, Inc. · 1996 · cites it directly9descendants
- K052087Breathing Filter Bacterial/Viral, Model AG7178Ag Industries · 2005 · 2 generations on3descendants
- K061426Oxygen Concentrator Filters, Models DBF32, DBF24, DBF27, DBF25, DFC06 and DDF47Porous Media Corp. · 2006 · 3 generations on2descendants
- K043148All Flow Pulmonary Function FilterAlliance Tech Medical, Inc. · 2004 · 2 generations on2descendants
- K091363Compressor Filter, Models AG1038831, HCF100,BF900,BF910,BF950, LL201, LL202, LL205…Ag Industries · 2010 · 4 generations on1descendant
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K792097 | Dryden Bacteria Filter | Dryden Corp. | 1979 | — |
| +1 | K961914 | Bacteria/Viral Filter | Hudson Respiratory Care, Inc. | 1996 | — |
| +2 | K052087 | Breathing Filter Bacterial/Viral, Model AG7178 | Ag Industries | 2005 | — |
| +3 | K061426 | Oxygen Concentrator Filters, Models DBF32, DBF24, DBF27, DBF25, DFC06 and DDF47 | Porous Media Corp. | 2006 | — |
| +2 | K043148 | All Flow Pulmonary Function Filter | Alliance Tech Medical, Inc. | 2004 | 1 |
| +4 | K091363 | Compressor Filter, Models AG1038831, HCF100,BF900,BF910,BF950, LL201, LL202… | Ag Industries | 2010 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1996 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 0 |
| 2012 | 1 | 0 |
| 2014 | 1 | 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.
Planning a device in CAH? 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 CAH device
- #1 K251583 Ambu® Virobac II® Exhalation Filterscore 11.6 · 2 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? (10)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K961914 | Bacteria/Viral Filter | 1996 | 9 |
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?
- Of its descendants, K961914 (Hudson Respiratory Care, Inc., 1996) has gone furthest, with 9 descendants of its own.
How does its category compare?
All CAH devicesCAH Filter, Bacterial, Breathing-Circuit: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · CAH
2in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · CAH
237in 2023
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · CAH
1in 2025
Class I (7 since 2007) Class II/III not classified
Adverse event reports per year · CAH
77in 2025
MAUDE reports naming product code CAH, 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 | 2 | — | 0 | 32 |
| 2008 | 1 | — | 0 | 27 |
| 2009 | 4 | 111 | 0 | 18 |
| 2010 | 5 | 216 | 2 | 40 |
| 2011 | 3 | 281 | 0 | 9 |
| 2012 | 3 | 212 | 0 | 16 |
| 2013 | 1 | — | 1 | 47 |
| 2014 | 4 | 250 | 1 | 98 |
| 2015 | 2 | — | 0 | 51 |
| 2016 | 0 | — | 0 | 34 |
| 2017 | 1 | — | 1 | 29 |
| 2018 | 0 | — | 0 | 33 |
| 2019 | 2 | — | 0 | 30 |
| 2020 | 2 | — | 0 | 33 |
| 2021 | 2 | — | 0 | 56 |
| 2022 | 3 | 204 | 6 (6) | 67 |
| 2023 | 3 | 237 | 0 | 40 |
| 2024 | 2 | — | 0 | 51 |
| 2025 | 0 | — | 1 (1) | 77 |
| 2026 | 2 | — | 0 | — |
https://510kreport.com/device/K792097 · printed Nov 4, 2026
Cite this page
510(k) Report. “K792097: Dryden Bacteria Filter.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K792097
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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