510(k) · Cleared
ClearedSomfit
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Compumedics Limited · MNR Ventilatory Effort Recorder
Cleared on Nov 30, 2023 as substantially equivalent to K180775 (Itamar Medical, Ltd., 2018) after a 184-day review. Its family tree reaches back 9 generations to 1992. 1 later device descends from it.
- Decided
- Nov 30, 2023
- Review
- 184 days
- Class
- Class II
- Product code
- MNR
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 9 generations to K913396 (1992). 49 ancestors in all, the oldest K830295 (1983). 1 later device descends from it, 1 citing it directly.
- Root · 9 generations backK913396 Cannula Style ThermocouplesPro-Tech, Inc. · 1992
- 5 generations between
- 3 generations backK122516 Embletta MPREmbla Systems · 2013 · Recalled
- 2 generations backK161579 Watch-PAT200UItamar Medical, Ltd. · 2017
- 1 generation backK180775 Watch-PAT300Itamar Medical, Ltd. · 2018
- This deviceK231546 SomfitCompumedics Limited · 2023
- Descendant · cites it directly · 0 of its ownK252383 Somfit DCompumedics Limited · 2025
Show all 9 generations
- Root · 9 generations backK913396 Cannula Style ThermocouplesPro-Tech, Inc. · 1992
- 8 generations backK982293 Pressure Transducer Airflow SensorPro-Tech Services, Inc. · 1998
- 7 generations backK020607 Sleepflo, Model 101501Biomec, Inc. · 2002
- 6 generations backK030379 Aplab, Model 801D0030Sector Medical Corp. · 2003
- 5 generations backK041904 Compass F10 SystemMedcare Flaga · 2004
- 4 generations backK073682 Embletta GoldEmbla Systems, Inc. · 2008 · Recalled
- 3 generations backK122516 Embletta MPREmbla Systems · 2013 · Recalled
- 2 generations backK161579 Watch-PAT200UItamar Medical, Ltd. · 2017
- 1 generation backK180775 Watch-PAT300Itamar Medical, Ltd. · 2018
- This deviceK231546 SomfitCompumedics Limited · 2023
Most influential descendants
Showing 1 of 1 · See all- K252383Somfit DCompumedics Limited · 2025 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −9 | K913396 | Cannula Style Thermocouples | Pro-Tech, Inc. | 1992 | — |
| −8 | K982293 | Pressure Transducer Airflow Sensor | Pro-Tech Services, Inc. | 1998 | — |
| −7 | K020607 | Sleepflo, Model 101501 | Biomec, Inc. | 2002 | — |
| −6 | K030379 | Aplab, Model 801D0030 | Sector Medical Corp. | 2003 | — |
| −5 | K041904 | Compass F10 System | Medcare Flaga | 2004 | — |
| −4 | K073682 | Embletta Gold | Embla Systems, Inc. | 2008 | 1 |
| −3 | K122516 | Embletta MPR | Embla Systems | 2013 | 1 |
| −2 | K161579 | Watch-PAT200U | Itamar Medical, Ltd. | 2017 | — |
| −1 | K180775 | Watch-PAT300 | Itamar Medical, Ltd. | 2018 | — |
| 0 (this device) | K231546 | Somfit | Compumedics Limited | 2023 | — |
| +1 | K252383 | Somfit D | Compumedics Limited | 2025 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1983 | 1 | 0 |
| 1986 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 3 | 0 |
| 2004 | 2 | 0 |
| 2008 | 3 | 0 |
| 2011 | 1 | 0 |
| 2014 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2025 | 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 MNR? 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 MNR device
- #1 K244027 Sansa Hsatscore 18.1 · 12 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
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 |
|---|---|---|---|
| * | K180775 | Watch-PAT300Summary page 5…ulation number: 21 CFR 868.2375 Predicate Device Information Trade Name: Watch-PAT300 Manufacturer: Itamar Medical, Ltd. 510(k) number: K180775 510(k) Decision Date: 17th August 2018 Classification: Ventilatory Effort Recorder Product code: MNR Device class:… | 2018 |
| † | K191031 | NightOwl | 2020 |
| † | K130013 | X4 System | 2013 |
| † | K183625 | SomnaPatch | 2019 |
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 |
|---|---|---|---|
| K252383 | Somfit D | 2025 | 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?
- The line of descent spans 31 years and passes through 9 companies; a new generation was cleared every 4.0 years on median.
- 4 of the 49 ancestors have a recall of any class.
- Of its descendants, K252383 (Compumedics Limited, 2025) has gone furthest, with 0 descendants of its own.
- 2 other devices also cite its predicate K180775.
How does its category compare?
All MNR devicesMNR Ventilatory Effort Recorder: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · MNR
10in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · MNR
165in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · MNR
1in 2021
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · MNR
43in 2025
MAUDE reports naming product code MNR, 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 | 6 | 124 | 2 | 1 |
| 2008 | 14 | 118 | 0 | 0 |
| 2009 | 8 | 89 | 1 | 0 |
| 2010 | 0 | — | 0 | 1 |
| 2011 | 9 | 90 | 1 | 1 |
| 2012 | 1 | — | 0 | 1 |
| 2013 | 4 | 161 | 0 | 0 |
| 2014 | 2 | — | 0 | 1 |
| 2015 | 4 | 229 | 0 | 4 |
| 2016 | 3 | 281 | 0 | 10 |
| 2017 | 4 | 275 | 0 | 4 |
| 2018 | 3 | 147 | 0 | 2 |
| 2019 | 8 | 383 | 0 | 3 |
| 2020 | 5 | 192 | 0 | 5 |
| 2021 | 3 | 137 | 1 | 5 |
| 2022 | 7 | 266 | 0 | 4 |
| 2023 | 6 | 183 | 0 | 13 |
| 2024 | 6 | 217 | 0 | 11 |
| 2025 | 10 | 165 | 0 | 43 |
| 2026 | 5 | 227 | 1 | — |
What is it indicated for?
The Somfit system is a non-invasive prescription device for home use with patients suspected to have sleep-related breathing disorders. The Somfit is a diagnostic aid for the detection of sleep-related breathing disorders, sleep staging (REM, N1, N2, N3, Wake), and snoring level. The Somfit system acquires electrical data from three frontal electrodes, tri-axial accelerometer data, acoustic and plethysmographic data. The Somfit calculates and reports to…
Read the full statement (174 words)
The Somfit system is a non-invasive prescription device for home use with patients suspected to have sleep-related breathing disorders. The Somfit is a diagnostic aid for the detection of sleep-related breathing disorders, sleep staging (REM, N1, N2, N3, Wake), and snoring level. The Somfit system acquires electrical data from three frontal electrodes, tri-axial accelerometer data, acoustic and plethysmographic data. The Somfit calculates and reports to clinicians EEG/EOG channels, Sleep Stages, SpO2, Peripheral Arterial Tonometry (PAT) signal, pulse rate, and snoring level. The Somfit calculates and reports to clinicians derived parameters such as PAT-derived Apnea Hypopnea Index, Obstructive Desaturation Index; and hypnogram-derived indices such as time in each sleep stage. Somfit data is not intended to be used as the sole or primary basis for diagnosing any sleep-related breathing disorder, prescribing treatment, or determining whether additional diagnostic assessment is warranted. The Somfit is not intended for use as life support equipment, for example vital signs monitoring in intensive care unit. The Somfit is a prescription device indicated for adult patients aged 21 years and over.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K231546 · printed Nov 6, 2026
Cite this page
510(k) Report. “K231546: Somfit.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K231546
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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