510(k) · Cleared
ClearedMicrO2 OSA Device with Micro-Recorder
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Microdental, Inc. · PLC Sleep Appliances With Patient Monitoring
Cleared on Nov 7, 2016 as substantially equivalent to K150369 (Somnomed, Inc., 2015) and 1 other predicate after a 147-day review. Its family tree reaches back 9 generations to 1989. 5 later devices descend from it.
- Decided
- Nov 7, 2016
- Review
- 147 days
- Class
- Class II
- Product code
- PLC
- Recalls
- None
- Predicates
- 2
Its longest line of descent runs back 9 generations to K882303 (1989). 11 ancestors in all. 5 later devices descend from it, 2 citing it directly.
- Root · 9 generations backK882303 H&M Anti-Snoring DeviceHays & Meade, Inc. · 1989
- 5 generations between
- 3 generations backK130558 Somnodent Herbst; Classic, FlexSomnomed, Inc. · 2013
- 2 generations backK140278 Somnodent Fusion, Classic; Somnodent Fusion, FlexSomnomed, Inc. · 2014
- 1 generation backK150369 SomnoDent Classic with DentiTrac Micro-recorder, SomnoDent Flex with…Somnomed, Inc. · 2015
- This deviceK161624 MicrO2 OSA Device with Micro-RecorderMicrodental, Inc. · 2016
- Descendant · cites it directly · 2 of its ownK202529 ProSomnus EVO Sleep and Snore Device, ProSomnus EVO Sleep and Snore…Prosomnus Sleep Technologies, Inc. · 2020
- Descendant · 2 generations on · 1 of its ownK252765 ProSomnus RPMO2 OSA Device (RPMO2 OSA)Prosomnus Sleep Technologies · 2026
- Descendant · cites it directly · 1 of its ownK172859 Prosomnus [CA] Sleep and Snore Device and Prosomnus [CA] Sleep and…Prosomnous Sleep Technologies · 2017
- Descendant · 3 generations on · 0 of its ownK254304 iNOS intraoral biosensorAchaemenid, LLC · 2026
- Descendant · 2 generations on · 0 of its ownK190687 Twilite ApplianceStephen J Harkins, Dds, PC · 2019
Show all 9 generations
- Root · 9 generations backK882303 H&M Anti-Snoring DeviceHays & Meade, Inc. · 1989
- 8 generations backK962516 Tap Anti-Snoring DeviceNellcor Puritan Bennett, Inc. · 1996
- 7 generations backK042161 Anti-Snoring/Sleep Apnea DeviceRj & VK Bird Pty, Ltd. · 2004
- 6 generations backK050592 Somnomed Mas RxaSomnomed, Ltd. · 2005
- 5 generations backK073004 Somnomed BflexSomnomed, Inc. · 2008
- 4 generations backK121340 Somnodent G2Somnomed, Inc. · 2012
- 3 generations backK130558 Somnodent Herbst; Classic, FlexSomnomed, Inc. · 2013
- 2 generations backK140278 Somnodent Fusion, Classic; Somnodent Fusion, FlexSomnomed, Inc. · 2014
- 1 generation backK150369 SomnoDent Classic with DentiTrac Micro-recorder, SomnoDent Flex with…Somnomed, Inc. · 2015
- This deviceK161624 MicrO2 OSA Device with Micro-RecorderMicrodental, Inc. · 2016
Most influential descendants
Showing 5 of 5 · See all- K202529ProSomnus EVO Sleep and Snore Device, ProSomnus EVO Sleep and Snore Device with Patient…Prosomnus Sleep Technologies, Inc. · 2020 · cites it directly2descendants
- K252765ProSomnus RPMO2 OSA Device (RPMO2 OSA)Prosomnus Sleep Technologies · 2026 · 2 generations on1descendant
- K172859Prosomnus [CA] Sleep and Snore Device and Prosomnus [CA] Sleep and Snore Device with…Prosomnous Sleep Technologies · 2017 · cites it directly1descendant
- K254304iNOS intraoral biosensorAchaemenid, LLC · 2026 · 3 generations on0descendants
- K190687Twilite ApplianceStephen J Harkins, Dds, PC · 2019 · 2 generations on0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −9 | K882303 | H&M Anti-Snoring Device | Hays & Meade, Inc. | 1989 | — |
| −8 | K962516 | Tap Anti-Snoring Device | Nellcor Puritan Bennett, Inc. | 1996 | — |
| −7 | K042161 | Anti-Snoring/Sleep Apnea Device | Rj & VK Bird Pty, Ltd. | 2004 | — |
| −6 | K050592 | Somnomed Mas Rxa | Somnomed, Ltd. | 2005 | — |
| −5 | K073004 | Somnomed Bflex | Somnomed, Inc. | 2008 | — |
| −4 | K121340 | Somnodent G2 | Somnomed, Inc. | 2012 | — |
| −3 | K130558 | Somnodent Herbst; Classic, Flex | Somnomed, Inc. | 2013 | — |
| −2 | K140278 | Somnodent Fusion, Classic; Somnodent Fusion, Flex | Somnomed, Inc. | 2014 | — |
| −1 | K150369 | SomnoDent Classic with DentiTrac Micro-recorder, SomnoDent Flex with DentiTrac… | Somnomed, Inc. | 2015 | — |
| 0 (this device) | K161624 | MicrO2 OSA Device with Micro-Recorder | Microdental, Inc. | 2016 | — |
| +1 | K202529 | ProSomnus EVO Sleep and Snore Device, ProSomnus EVO Sleep and Snore Device… | Prosomnus Sleep Technologies, Inc. | 2020 | — |
| +2 | K252765 | ProSomnus RPMO2 OSA Device (RPMO2 OSA) | Prosomnus Sleep Technologies | 2026 | — |
| +1 | K172859 | Prosomnus [CA] Sleep and Snore Device and Prosomnus [CA] Sleep and Snore… | Prosomnous Sleep Technologies | 2017 | — |
| +3 | K254304 | iNOS intraoral biosensor | Achaemenid, LLC | 2026 | — |
| +2 | K190687 | Twilite Appliance | Stephen J Harkins, Dds, PC | 2019 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1993 | 1 | 0 |
| 2014 | 1 | 0 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2017 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2026 | 2 | 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 PLC? 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 PLC device
- #1 K252765 ProSomnus RPMO2 OSA Device (RPMO2 OSA)score 17.1 · 11 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 |
|---|---|---|---|
| * | K150369 | SomnoDent Classic with DentiTrac Micro-recorder, SomnoDent Flex with DentiTrac…Summary page 4…Device(s) Primary Predicate: Device Name: SomnoDent with Micro-Recorder Manufacturer: SomnoMed, Ltd. 510(k) Number: K150369 Reference Predicate: Device Name: Micr02 OSA Device Manufacturer: MicroDental Laboratorie… | 2015 |
| * | K133683 | MICR02 Osa DeviceSummary page 4…0369 Reference Predicate: Device Name: Micr02 OSA Device Manufacturer: MicroDental Laboratories, Inc. 510(k) Number: K133683 4. Device Description: The MicrO2 OSA device series consists of maxillary and mandibular devices that when interfaced… | 2014 |
What descends from it? (5)
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?
- The line of descent spans 27 years and passes through 6 companies; a new generation was cleared every 1.4 years on median.
- None of the 11 ancestors has a recall.
- Of its descendants, K202529 (Prosomnus Sleep Technologies, Inc., 2020) has gone furthest, with 2 descendants of its own.
- 4 other devices also cite its predicate K150369.
How does its category compare?
All PLC devicesPLC Sleep Appliances With Patient Monitoring: FDA decisions, review times, recalls and adverse event reports over 20 years. 2016, this device’s year, is highlighted.
FDA decisions per year · PLC
1in 2024
2026 to Oct 25, outlined.
Median 510(k) review, days · PLC
Too few PLC 510(k)s in any year since 2007 to give a median.
Recalls per year · PLC
No recall names PLC since 2007.
Adverse event reports per year · PLC
1in 2023
MAUDE reports naming product code PLC, 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 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 1 | — | 0 | 0 |
| 2016 | 2 | — | 0 | 1 |
| 2017 | 2 | — | 0 | 1 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 1 | — | 0 | 0 |
| 2020 | 1 | — | 0 | 1 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 1 |
| 2024 | 1 | — | 0 | 0 |
| 2025 | 0 | — | 0 | 0 |
| 2026 | 2 | — | 0 | — |
What is it indicated for?
The MICRODENTAL, Inc. MicrO2 device is intended to reduce night time snoring and mild to moderate obstructive sleep apnea (OSA) in adults.
Optionally, if the DentiTrac® micro-recorder is completely embedded into the MicrO2 appliance, the micro-recorder is intended to measure patient compliance to the oral appliance therapy in combination with the DentiTrac® System.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K161624 · printed Nov 6, 2026
Cite this page
510(k) Report. “K161624: MicrO2 OSA Device with Micro-Recorder.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K161624
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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