510(k) · Cleared
ClearedSystem 920 Argon/Dye Photocoagulator
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Coherent Medical Group · HQF Laser, Ophthalmic
Cleared on Jun 5, 1985 after a 208-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 31 later devices descend from it.
- Decided
- Jun 5, 1985
- Review
- 208 days
- Class
- Class II
- Product code
- HQF
- Recalls
- None
- Predicates
- 0
31 later devices descend from it, 1 citing it directly.
- This deviceK844357 System 920 Argon/Dye PhotocoagulatorCoherent Medical Group · 1985
- Descendant · cites it directly · 30 of its ownK971950 Infinitech Multi-Spot Slit Lamp Laser AdapterInfinitech, Inc. · 1997
- Descendant · 2 generations on · 29 of its ownK043486 Pascal Photocoagulator, Product-Pascal-01Topcon Medical Laser Systems, Inc. · 2005
- Descendant · 3 generations on · 23 of its ownK091666 Pascal Photocoagulator, Pascal-USOptimedica Corporation · 2009
- Descendant · 4 generations on · 22 of its ownK092621 Pascal Streamline PhotocoagulatorTopcon Medical Laser Systems, Inc. · 2009
- Descendant · 2 generations on · 17 of its ownK081744 Pascal Synthesis Delivery SystemOptimedica Corporation · 2008
Showing 5 of 31 descendants. See all descendants
Descendants cleared per year
Most influential descendants
Showing 5 of 31 · See all- K971950Infinitech Multi-Spot Slit Lamp Laser AdapterInfinitech, Inc. · 1997 · cites it directly30descendants
- K043486Pascal Photocoagulator, Product-Pascal-01Topcon Medical Laser Systems, Inc. · 2005 · 2 generations on29descendants
- K091666Pascal Photocoagulator, Pascal-USOptimedica Corporation · 2009 · 3 generations on23descendants
- K092621Pascal Streamline PhotocoagulatorTopcon Medical Laser Systems, Inc. · 2009 · 4 generations on22descendants
- K081744Pascal Synthesis Delivery SystemOptimedica Corporation · 2008 · 2 generations on17descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K844357 | System 920 Argon/Dye Photocoagulator | Coherent Medical Group | 1985 | — |
| +1 | K971950 | Infinitech Multi-Spot Slit Lamp Laser Adapter | Infinitech, Inc. | 1997 | — |
| +2 | K043486 | Pascal Photocoagulator, Product-Pascal-01 | Topcon Medical Laser Systems, Inc. | 2005 | — |
| +3 | K091666 | Pascal Photocoagulator, Pascal-US | Optimedica Corporation | 2009 | — |
| +4 | K092621 | Pascal Streamline Photocoagulator | Topcon Medical Laser Systems, Inc. | 2009 | — |
| +2 | K081744 | Pascal Synthesis Delivery System | Optimedica Corporation | 2008 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1997 | 1 | 0 |
| 2005 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 3 | 0 |
| 2010 | 3 | 0 |
| 2011 | 2 | 0 |
| 2012 | 3 | 0 |
| 2013 | 3 | 0 |
| 2015 | 2 | 0 |
| 2016 | 1 | 0 |
| 2017 | 3 | 0 |
| 2018 | 1 | 0 |
| 2019 | 3 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
| 2025 | 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 HQF? 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 HQF device
- #1 K251772 Navilas Laser System 577sl (156691)score 13.6 · 12 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? (31)
See all 311 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K971950 | Infinitech Multi-Spot Slit Lamp Laser Adapter | 1997 | 30 |
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, K971950 (Infinitech, Inc., 1997) has gone furthest, with 30 descendants of its own.
How does its category compare?
All HQF devicesHQF Laser, Ophthalmic: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · HQF
3in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · HQF
264in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · HQF
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · HQF
106in 2025
MAUDE reports naming product code HQF, 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 | 4 | 198 | 2 | 60 |
| 2008 | 3 | 28 | 1 | 34 |
| 2009 | 7 | 115 | 2 | 33 |
| 2010 | 2 | — | 3 | 43 |
| 2011 | 4 | 128 | 5 | 26 |
| 2012 | 5 | 179 | 1 | 41 |
| 2013 | 6 | 225 | 2 | 39 |
| 2014 | 3 | 215 | 4 | 58 |
| 2015 | 4 | 295 | 0 | 80 |
| 2016 | 3 | 271 | 0 | 108 |
| 2017 | 3 | 189 | 0 | 77 |
| 2018 | 1 | — | 0 | 82 |
| 2019 | 4 | 107 | 0 | 66 |
| 2020 | 4 | 53 | 0 | 72 |
| 2021 | 1 | — | 0 | 100 |
| 2022 | 7 | 86 | 0 | 111 |
| 2023 | 5 | 155 | 0 | 92 |
| 2024 | 3 | 167 | 0 | 75 |
| 2025 | 3 | 264 | 1 | 106 |
| 2026 | 2 | — | 0 | — |
https://510kreport.com/device/K844357 · printed Nov 5, 2026
Cite this page
510(k) Report. “K844357: System 920 Argon/Dye Photocoagulator.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K844357
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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