Devices descending from K983706
19 later devices reach Modification of Townley Pedicle Screw Plating System through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +1 | K031354 | Ebi OMEGA21 Spinal Fixation System | Ebi, L.P. | 2003 | 13 | — |
| +1 | K031355 | Ebi Spinelink - II Spinal Fixation System | Ebi, L.P. | 2003 | 4 | — |
| +2 | K082353 | Mercury Spinal System | Spinal Elements, Inc. | 2009 | 11 | — |
| +2 | K083230 | Mercury Spinal System | Spinal Elements, Inc. | 2008 | 11 | — |
| +2 | K042772 | Ebi Array Spinal Fixation System and Spinelink II Spinal Fixation Device | Ebi, L.P. | 2004 | 3 | — |
| +3 | K222516 | Mercury® II Spinal System | Spinal Elements, Inc. | 2022 | 3 | — |
| +3 | K191576 | Mercury® Spinal System, Overwatch® Spinal System | Spinal Elements, Inc. | 2019 | 5 | — |
| +3 | K172967 | Mercury® Spinal System | Spinal Elements, Inc. | 2018 | 5 | — |
| +3 | K151215 | Mercury Spinal System | Spinal Elements, Inc. | 2015 | 8 | — |
| +3 | K141372 | Mercury Spinal System | Spinal Elements, Inc. | 2014 | 9 | — |
| +3 | K091587 | Mercury Spinal System | Spinal Elements, Inc. | 2009 | 10 | — |
| +3 | K070530 | Modification to Passmed Spinal System | Medicrea Technologies | 2007 | 2 | — |
| +4 | K243916 | Primus Spinal Fixation System | Spinal Elements, Inc. | 2025 | 2 | — |
| +4 | K193472 | OrthoCircle Spine Pedicle Screw System | Orthocircle Spine | 2020 | 0 | — |
| +4 | K190981 | NEX-D2 Posterior Fixation System | Next Orthosurgical | 2020 | 0 | — |
| +4 | K190376 | PASS LP Spinal System | Medicrea International SA | 2019 | 1 | 5 |
| +5 | K251154 | RIVA Posterior Fixation System; RIVA Posterior Fixation System Navigation Instruments | Ht Medical D.B.A. Xenix Medical | 2025 | 1 | — |
| +5 | K213281 | PASS LP™ Spinal System, CD Horizon™ Spinal System | Medicrea International SA | 2022 | 0 | — |
| +6 | K262193 | RIVA® Posterior Fixation System with NanoACTIV Surface Technology; RIVA® Anchor… | Xenix Medical | 2026 | 0 | — |