510(k) · Cleared
ClearedGerson Isolair Apr Particulate Surgical Mask
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Louis M. Gerson Co., Inc. · FXX Mask, Surgical
Cleared on Nov 16, 1992 after a 173-day review. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known. 22 later devices descend from it.
- Decided
- Nov 16, 1992
- Review
- 173 days
- Class
- Class II
- Product code
- FXX
- Recalls
- None
- Predicates
- 0
22 later devices descend from it, 1 citing it directly.
- This deviceK922507 Gerson Isolair Apr Particulate Surgical MaskLouis M. Gerson Co., Inc. · 1992
- Descendant · cites it directly · 21 of its ownK960778 Isolair Apr Type N95Louis M. Gerson Co., Inc. · 1996
- Descendant · 2 generations on · 15 of its ownK041855 Pleats Plus N95 Particulate Respirator, Models 1050 and 1050SAearo Co. · 2004
- Descendant · 2 generations on · 11 of its ownK051182 Inovel Health Care Model N95 Particulate Respirators and Surgical…Inovel, LLC · 2005 · Recalled
- Descendant · 3 generations on · 5 of its ownK070139 Willson One-Fit Healthcare Particle Respirator and Surgical Mask…Survivair, Inc. · 2007
- Descendant · 4 generations on · 3 of its ownK070782 Willson One-Fit Flat-Fold Healthcare Particulate Respirator and…Survivair Respirators, LLC · 2007
Showing 5 of 22 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 22 · See all- K960778Isolair Apr Type N95Louis M. Gerson Co., Inc. · 1996 · cites it directly21descendants
- K041855Pleats Plus N95 Particulate Respirator, Models 1050 and 1050SAearo Co. · 2004 · 2 generations on15descendants
- K051182Inovel Health Care Model N95 Particulate Respirators and Surgical MasksInovel, LLC · 2005 · 2 generations on11descendants
- K070139Willson One-Fit Healthcare Particle Respirator and Surgical Mask, HC-NB095Survivair, Inc. · 2007 · 3 generations on5descendants
- K070782Willson One-Fit Flat-Fold Healthcare Particulate Respirator and Surgical Mask, Models…Survivair Respirators, LLC · 2007 · 4 generations on3descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K922507 | Gerson Isolair Apr Particulate Surgical Mask | Louis M. Gerson Co., Inc. | 1992 | — |
| +1 | K960778 | Isolair Apr Type N95 | Louis M. Gerson Co., Inc. | 1996 | — |
| +2 | K041855 | Pleats Plus N95 Particulate Respirator, Models 1050 and 1050S | Aearo Co. | 2004 | — |
| +2 | K051182 | Inovel Health Care Model N95 Particulate Respirators and Surgical Masks | Inovel, LLC | 2005 | 1 |
| +3 | K070139 | Willson One-Fit Healthcare Particle Respirator and Surgical Mask, HC-NB095 | Survivair, Inc. | 2007 | — |
| +4 | K070782 | Willson One-Fit Flat-Fold Healthcare Particulate Respirator and Surgical Mask… | Survivair Respirators, LLC | 2007 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 2002 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 0 |
| 2006 | 3 | 0 |
| 2007 | 5 | 0 |
| 2008 | 2 | 0 |
| 2009 | 2 | 0 |
| 2010 | 4 | 0 |
| 2015 | 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 FXX? 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 FXX device
- #1 K201479 DemeMASKscore 40.2 · 6 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 lists a 510(k) statement for it but has not posted the file, so its predicates are not known.
What descends from it? (22)
See all 221 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K960778 | Isolair Apr Type N95 | 1996 | 21 |
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, K960778 (Louis M. Gerson Co., Inc., 1996) has gone furthest, with 21 descendants of its own.
How does its category compare?
All FXX devicesFXX Mask, Surgical: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · FXX
6in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · FXX
123in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · FXX
2in 2024
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · FXX
11in 2025
MAUDE reports naming product code FXX, 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 | 11 |
| 2008 | 2 | — | 0 | 10 |
| 2009 | 1 | — | 0 | 3 |
| 2010 | 7 | 144 | 0 | 9 |
| 2011 | 6 | 137 | 0 | 8 |
| 2012 | 1 | — | 0 | 22 |
| 2013 | 3 | 219 | 0 | 9 |
| 2014 | 1 | — | 0 | 5 |
| 2015 | 5 | 298 | 0 | 14 |
| 2016 | 5 | 268 | 0 | 16 |
| 2017 | 1 | — | 0 | 45 |
| 2018 | 3 | 119 | 0 | 21 |
| 2019 | 4 | 124 | 2 | 23 |
| 2020 | 27 | 113 | 0 | 60 |
| 2021 | 218 | 162 | 0 | 67 |
| 2022 | 91 | 113 | 0 | 21 |
| 2023 | 22 | 139 | 1 | 21 |
| 2024 | 15 | 263 | 2 | 21 |
| 2025 | 6 | 123 | 0 | 11 |
| 2026 | 5 | 142 | 0 | — |
https://510kreport.com/device/K922507 · printed Nov 6, 2026
Cite this page
510(k) Report. “K922507: Gerson Isolair Apr Particulate Surgical Mask.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K922507
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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