510(k) · Cleared
ClearedMerkur 4000
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
F.M. Wiest USA, Inc. · FAP Cystometric Gas (Carbon-Dioxide) On Hydraulic Device
Cleared on Jul 23, 1992 after a 167-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 2 later devices descend from it.
- Decided
- Jul 23, 1992
- Review
- 167 days
- Class
- Class II
- Product code
- FAP
- Recalls
- None
- Predicates
- 0
2 later devices descend from it, 2 citing it directly.
Most influential descendants
Showing 2 of 2 · See allView FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K920575 | Merkur 4000 | F.M. Wiest USA, Inc. | 1992 | — |
| +1 | K970595 | Circon Endotek OM-4 H2O Cystometry Pump | Circon Video | 1997 | — |
| +1 | K964522 | Ellipse 4 | Andromeda Medizinische Systeme GmbH | 1997 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1997 | 2 | 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 FAP? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
- Candidate predicates for a device like this, rankedin the report
- Recall history across each candidate’s familyin 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? (2)
2 later devices cite it directly; ranked here by how many devices descend from each in turn.
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, K970595 (Circon Video, 1997) has gone furthest, with 0 descendants of its own.
How does its category compare?
All FAP devicesFAP Cystometric Gas (Carbon-Dioxide) On Hydraulic Device: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · FAP
1in 2012
2026 to Oct 25, outlined.
Median 510(k) review, days · FAP
Too few FAP 510(k)s in any year since 2007 to give a median.
Recalls per year · FAP
No recall names FAP since 2007.
Adverse event reports per year · FAP
36in 2025
MAUDE reports naming product code FAP, 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 | 0 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 1 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 1 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 1 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 2 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 2 |
| 2025 | 0 | — | 0 | 36 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K920575 · printed Nov 5, 2026
Cite this page
510(k) Report. “K920575: Merkur 4000.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K920575
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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