Devices descending from K161842
6 later devices reach Overwatch Spine System through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K191576 | Mercury® Spinal System, Overwatch® Spinal System | Spinal Elements, Inc. | 2019 | 5 | — |
| +2 | K222516 | Mercury® II Spinal System | Spinal Elements, Inc. | 2022 | 3 | — |
| +2 | K193472 | OrthoCircle Spine Pedicle Screw System | Orthocircle Spine | 2020 | 0 | — |
| +3 | K243916 | Primus Spinal Fixation System | Spinal Elements, Inc. | 2025 | 2 | — |
| +4 | K251154 | RIVA Posterior Fixation System; RIVA Posterior Fixation System Navigation Instruments | Ht Medical D.B.A. Xenix Medical | 2025 | 1 | — |
| +5 | K262193 | RIVA® Posterior Fixation System with NanoACTIV Surface Technology; RIVA® Anchor… | Xenix Medical | 2026 | 0 | — |