510(k) · Cleared
ClearedMMC Amplifier
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Melville Software, Ltd. · GWL Amplifier, Physiological Signal
Cleared on Oct 26, 1994 after a 92-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 1 later device descends from it.
- Decided
- Oct 26, 1994
- Review
- 92 days
- Class
- Class II
- Product code
- GWL
- Recalls
- None
- Predicates
- 0
1 later device descends from it, 1 citing it directly.
- This deviceK943673 MMC AmplifierMelville Software, Ltd. · 1994
- Descendant · cites it directly · 0 of its ownK964494 SleepwizardNellcor Puritan Bennett, Inc. · 1997
Most influential descendants
Showing 1 of 1 · See all- K964494SleepwizardNellcor Puritan Bennett, Inc. · 1997 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K943673 | MMC Amplifier | Melville Software, Ltd. | 1994 | — |
| +1 | K964494 | Sleepwizard | Nellcor Puritan Bennett, Inc. | 1997 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1997 | 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 GWL? 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 GWL device
- #1 K232210 X-trodes System Mscore 10.4 · 13 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? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K964494 | Sleepwizard | 1997 | 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?
- Of its descendants, K964494 (Nellcor Puritan Bennett, Inc., 1997) has gone furthest, with 0 descendants of its own.
How does its category compare?
All GWL devicesGWL Amplifier, Physiological Signal: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · GWL
1in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · GWL
133in 2024
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · GWL
1in 2013
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · GWL
1in 2018
MAUDE reports naming product code GWL, 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 | 1 | — | 0 | 0 |
| 2008 | 0 | — | 0 | 2 |
| 2009 | 2 | — | 0 | 0 |
| 2010 | 1 | — | 1 | 0 |
| 2011 | 1 | — | 0 | 0 |
| 2012 | 2 | — | 0 | 0 |
| 2013 | 0 | — | 1 | 0 |
| 2014 | 1 | — | 0 | 0 |
| 2015 | 1 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 2 | — | 0 | 0 |
| 2018 | 1 | — | 0 | 1 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 1 | — | 0 | 0 |
| 2021 | 2 | — | 0 | 0 |
| 2022 | 1 | — | 0 | 0 |
| 2023 | 2 | — | 0 | 0 |
| 2024 | 4 | 133 | 0 | 0 |
| 2025 | 1 | — | 0 | 0 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K943673 · printed Nov 5, 2026
Cite this page
510(k) Report. “K943673: MMC Amplifier.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K943673
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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