Devices descending from K190236
5 later devices reach O2Vent Optima through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K220330 | Soundly Anti Snoring Device | Greystone Ip, Ltd. | 2022 | 0 | — |
| +1 | K203606 | Serena Sleep Block Mandibular Advancement (BMA), Serena Sleep Elastic Mandibular… | Meris Investment Group | 2021 | 3 | — |
| +2 | K252942 | ShaeferH | Shaeferh, LLC | 2026 | 0 | — |
| +2 | K232735 | EMA 3D | Ema Sleep Incorporated | 2024 | 1 | — |
| +3 | K252698 | NightGuard Aire Max | Nightguard Express, LLC | 2025 | 0 | — |