510(k) Report

510(k) · Cleared

Cleared

Model 920 Argon Laser System

K837235510(k) TraditionalCleared Apr 4, 198334-day review

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Coherent Radiation Laboratories

Cleared on Apr 4, 1983 after a 34-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 66 later devices descend from it.

Decided
Apr 4, 1983
Review
34 days
Recalls
None
Predicates
0

66 later devices descend from it, 1 citing it directly.

Descendants, by year cleared 2002: 1 descendant cleared2005: 4 descendants cleared2006: 3 descendants cleared2011: 6 descendants cleared2004: 1 descendant cleared2017: 5 descendants cleared2009: 6 descendants cleared2007: 1 descendant cleared2003: 1 descendant cleared2008: 2 descendants cleared2010: 3 descendants cleared2013: 5 descendants cleared2012: 3 descendants cleared2022: 4 descendants cleared2014: 2 descendants cleared2016: 3 descendants cleared2015: 2 descendants cleared2019: 5 descendants cleared2023: 2 descendants cleared2020: 2 descendants cleared2026: 2 descendants cleared2025: 1 descendant cleared2024: 1 descendant cleared2018: 1 descendant cleared19801990200020102020
  1. This deviceK837235 Model 920 Argon Laser SystemCoherent Radiation Laboratories · 1983
  2. Descendant · cites it directly · 65 of its ownK022181 Novus Varia Ophthalmic Laser and Delivery Devices with AccessoriesLumenis, Inc. · 2002
  3. Descendant · 2 generations on · 29 of its ownK043486 Pascal Photocoagulator, Product-Pascal-01Topcon Medical Laser Systems, Inc. · 2005
  4. Descendant · 3 generations on · 23 of its ownK091666 Pascal Photocoagulator, Pascal-USOptimedica Corporation · 2009
  5. Descendant · 4 generations on · 22 of its ownK092621 Pascal Streamline PhotocoagulatorTopcon Medical Laser Systems, Inc. · 2009
  6. Descendant · 3 generations on · 17 of its ownK081744 Pascal Synthesis Delivery SystemOptimedica Corporation · 2008

Showing 5 of 66 descendants. See all descendants

Descendants cleared per year

2002: 12003: 12004: 12005: 42006: 32007: 12008: 22009: 62010: 32011: 62012: 32013: 52014: 22015: 22016: 32017: 52018: 12019: 52020: 22022: 42023: 22024: 12025: 12026: 2
2002high 6 (2009) · low 0 (2021)2026

Most influential descendants

Showing 5 of 66 · See all
  • K022181Novus Varia Ophthalmic Laser and Delivery Devices with AccessoriesLumenis, Inc. · 2002 · cites it directly65descendants
  • 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 · 3 generations on17descendants
View FIG. 1 as a table

Line of descent and top descendants

GenerationNumberDeviceApplicantDecidedRecalls
0 (this device)K837235Model 920 Argon Laser SystemCoherent Radiation Laboratories1983—
+1K022181Novus Varia Ophthalmic Laser and Delivery Devices with AccessoriesLumenis, Inc.2002—
+2K043486Pascal Photocoagulator, Product-Pascal-01Topcon Medical Laser Systems, Inc.2005—
+3K091666Pascal Photocoagulator, Pascal-USOptimedica Corporation2009—
+4K092621Pascal Streamline PhotocoagulatorTopcon Medical Laser Systems, Inc.2009—
+3K081744Pascal Synthesis Delivery SystemOptimedica Corporation2008—

Descendants by year cleared

Year clearedDevicesWith a Class I recall
200210
200310
200410
200540
200630
200710
200820
200960
201030
201160
201230
201350
201420
201520
201630
201750
201810
201950
202020
202240
202320
202410
202510
202620
FIG. 1 — Lineage of K837235, 1983–2026Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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Notable FDA decisions, review times and new Class I recalls. See an issue.

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.

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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? (66)

See all 66

1 later device cites it directly; ranked here by how many devices descend from each in turn.

NumberDeviceApplicantDecidedDescendants
K022181Novus Varia Ophthalmic Laser and Delivery Devices with AccessoriesLumenis, Inc.200265

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, K022181 (Lumenis, Inc., 2002) has gone furthest, with 65 descendants of its own.

More from Coherent Radiation Laboratories

3 FDA decisions under this applicant name. See the company

  • K837125System 900 Two Room Remote FibersCoherent Radiation Laboratories · 1983
  • K827383Model 900 Photocoagulator with Green-Only OptionsCoherent Radiation Laboratories · 1982

https://510kreport.com/device/K837235 · printed Nov 6, 2026

Cite this page

510(k) Report. “K837235: Model 920 Argon Laser System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K837235

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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