510(k) · Cleared
ClearedKowa, FM-600, Model LSS50
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Kowa Co., Ltd. · MYC Ophthalmoscope, Laser, Scanning
Cleared on Aug 7, 2009 as substantially equivalent to K913852 (Kowa Optimed, Inc., 1992) and 1 other predicate after a 116-day review. Its family tree reaches back 1 generation to 1988. 1 later device descends from it.
- Decided
- Aug 7, 2009
- Review
- 116 days
- Class
- Class II
- Product code
- MYC
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 1 generation to K880920 (1988). 2 ancestors in all. 1 later device descends from it, 1 citing it directly.
Most influential descendants
Showing 1 of 1 · See all- K261255Kowa FM-600Kowa Company, Ltd. Chofu Factory · 2026 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K880920 | Laser Flare Cell Meter FC-1000 | Kowa Optimed, Inc. | 1988 | — |
| 0 (this device) | K091039 | Kowa, FM-600, Model LSS50 | Kowa Co., Ltd. | 2009 | — |
| +1 | K261255 | Kowa FM-600 | Kowa Company, Ltd. Chofu Factory | 2026 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1992 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2026 | 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 MYC? 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 MYC device
- #1 K261255 Kowa FM-600score 12.3 · 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? (2)
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 |
|---|---|---|---|
| * | K913852 | Laser Flare MeterSummary page 1…Identification of predicate devices: Kowa Company believes that this device is substantially equivalent to: Laser flare meter FM-500 manufactured by Kowa, 510(k)# K913852, Laser flare cell meter FC-1000 manufactured by Kowa, 501(k)# K880920. Device description: KOWA FM-600, here after refer t… | 1992 |
| * | K880920 | Laser Flare Cell Meter FC-1000Summary page 1…is substantially equivalent to: Laser flare meter FM-500 manufactured by Kowa, 510(k)# K913852, Laser flare cell meter FC-1000 manufactured by Kowa, 501(k)# K880920. Device description: KOWA FM-600, here after refer to as FM-600, is a noninvasive flare photometry device that is able to assess… | 1988 |
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 |
|---|---|---|---|
| K261255 | Kowa FM-600 | 2026 | 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?
- None of the 2 ancestors has a recall.
- Of its descendants, K261255 (Kowa Company, Ltd. Chofu Factory, 2026) has gone furthest, with 0 descendants of its own.
How does its category compare?
All MYC devicesMYC Ophthalmoscope, Laser, Scanning: FDA decisions, review times, recalls and adverse event reports over 20 years. 2009, this device’s year, is highlighted.
FDA decisions per year · MYC
2in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MYC
116in 2009
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MYC
No recall names MYC since 2007.
Adverse event reports per year · MYC
2in 2023
MAUDE reports naming product code MYC, 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 | 0 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 3 | 116 | 0 | 0 |
| 2010 | 2 | — | 0 | 0 |
| 2011 | 2 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 1 | — | 0 | 0 |
| 2014 | 2 | — | 0 | 0 |
| 2015 | 2 | — | 0 | 0 |
| 2016 | 1 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 2 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 2 | — | 0 | 1 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 2 |
| 2024 | 0 | — | 0 | 0 |
| 2025 | 2 | — | 0 | 0 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
KOWA FM-600 is an instrument to measure the protein level contained in aqueous humor of the anterior chamber of human eye.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K091039 · printed Nov 6, 2026
Cite this page
510(k) Report. “K091039: Kowa, FM-600, Model LSS50.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K091039
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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