510(k) · Cleared
ClearedOphthalmic a-Scan a-2000 Sonome
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Sonomed Technology, Inc. · IYO System, Imaging, Pulsed Echo, Ultrasonic
Cleared on Feb 26, 1985 after a 160-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 1 of the 79 devices in its family, counting itself, has a Class I recall. 78 later devices descend from it.
- Decided
- Feb 26, 1985
- Review
- 160 days
- Class
- Class II
- Product code
- IYO
- Recalls
- None
- Predicates
- 0
78 later devices descend from it, 2 citing it directly. 1 of the 79 devices in this family, counting this one, has a Class I recall.
- This deviceK843696 Ophthalmic a-Scan a-2000 SonomeSonomed Technology, Inc. · 1985
- Descendant · cites it directly · 76 of its ownK040668 E-Z Scan AB5500+Sonomed, Inc. · 2004
- Descendant · 2 generations on · 67 of its ownK042467 Lso Pet/CT Hirez 64Cti Pet Systems, Inc. · 2004 · Recalled
- Descendant · 3 generations on · 66 of its ownK050509 Lso Pet/CT Hirez Series, Models 2I, 6I, 16I, 64ICti Pet Systems, Inc. · 2005
- Descendant · 4 generations on · 65 of its ownK060060 Biograph 6Siemens Medical Solutions USA, Inc. · 2006
- Descendant · 4 generations on · 64 of its ownK060631 Biograph 64 and Biograph 40Siemens Medical Solutions USA, Inc. · 2006 · Recalled
Showing 5 of 78 descendants. See all descendants
Descendants cleared per year
Class I recalls in this family
- K200213 Biograph mMR with syngo MR E11P-AP01 system…9 generations on · 2020
Most influential descendants
Showing 5 of 78 · See all- K040668E-Z Scan AB5500+Sonomed, Inc. · 2004 · cites it directly76descendants
- K042467Lso Pet/CT Hirez 64Cti Pet Systems, Inc. · 2004 · 2 generations on67descendants
- K050509Lso Pet/CT Hirez Series, Models 2I, 6I, 16I, 64ICti Pet Systems, Inc. · 2005 · 3 generations on66descendants
- K060060Biograph 6Siemens Medical Solutions USA, Inc. · 2006 · 4 generations on65descendants
- K060631Biograph 64 and Biograph 40Siemens Medical Solutions USA, Inc. · 2006 · 4 generations on64descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K843696 | Ophthalmic a-Scan a-2000 Sonome | Sonomed Technology, Inc. | 1985 | — |
| +1 | K040668 | E-Z Scan AB5500+ | Sonomed, Inc. | 2004 | — |
| +2 | K042467 | Lso Pet/CT Hirez 64 | Cti Pet Systems, Inc. | 2004 | 1 |
| +3 | K050509 | Lso Pet/CT Hirez Series, Models 2I, 6I, 16I, 64I | Cti Pet Systems, Inc. | 2005 | — |
| +4 | K060060 | Biograph 6 | Siemens Medical Solutions USA, Inc. | 2006 | — |
| +4 | K060631 | Biograph 64 and Biograph 40 | Siemens Medical Solutions USA, Inc. | 2006 | 3 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2004 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 2 | 0 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 0 |
| 2011 | 2 | 0 |
| 2013 | 2 | 0 |
| 2014 | 4 | 0 |
| 2015 | 1 | 0 |
| 2016 | 2 | 0 |
| 2017 | 6 | 0 |
| 2018 | 7 | 0 |
| 2019 | 5 | 0 |
| 2020 | 6 | 1 |
| 2021 | 4 | 0 |
| 2022 | 5 | 0 |
| 2023 | 5 | 0 |
| 2024 | 7 | 0 |
| 2025 | 4 | 0 |
| 2026 | 7 | 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.
1 device in this family has a Class I recall. 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 IYO device
- #1 K243937 Accuro 3Sscore 20.5 · 18 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? (78)
See all 782 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (1 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
- K200213Biograph mMR with syngo MR E11P-AP01 system softwareSiemens Medical Solutions USA, Inc. · 2020 · 9 generations on · ◆ in the 2020 descendants bar of FIG. 11 Class I recall
What does this lineage say?
- Of its descendants, K040668 (Sonomed, Inc., 2004) has gone furthest, with 76 descendants of its own.
How does its category compare?
All IYO devicesIYO System, Imaging, Pulsed Echo, Ultrasonic: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · IYO
7in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · IYO
171in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · IYO
1in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · IYO
485in 2025
MAUDE reports naming product code IYO, 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 | 20 | 17 | 4 | 39 |
| 2008 | 14 | 36 | 5 | 20 |
| 2009 | 13 | 79 | 9 | 27 |
| 2010 | 15 | 113 | 8 | 20 |
| 2011 | 11 | 69 | 0 | 58 |
| 2012 | 15 | 68 | 2 | 78 |
| 2013 | 17 | 50 | 3 | 436 |
| 2014 | 14 | 63 | 2 | 304 |
| 2015 | 19 | 46 | 1 | 268 |
| 2016 | 10 | 36 | 0 | 254 |
| 2017 | 19 | 72 | 0 | 238 |
| 2018 | 14 | 56 | 1 | 368 |
| 2019 | 13 | 59 | 1 | 537 |
| 2020 | 11 | 57 | 0 | 498 |
| 2021 | 15 | 64 | 11 | 617 |
| 2022 | 5 | 190 | 1 | 511 |
| 2023 | 11 | 177 | 0 | 527 |
| 2024 | 10 | 220 | 0 | 640 |
| 2025 | 7 | 171 | 0 | 485 |
| 2026 | 10 | 139 | 1 | — |
https://510kreport.com/device/K843696 · printed Nov 6, 2026
Cite this page
510(k) Report. “K843696: Ophthalmic a-Scan a-2000 Sonome.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K843696
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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