Devices descending from K991990
105 later devices reach Tri-Polar System through their predicates, nearest generation first.
| Generation | Number | Device | Applicant | Decided | Own descendants | Recalls |
|---|---|---|---|---|---|---|
| +5 | K221675 | United U2 femoral head, 22mm delta ceramic head | United Orthopedic Corporation | 2022 | 0 | — |
| +5 | K210614 | BENCOX Mirabo Z Cup Cortinium | Corentec Co., Ltd. | 2022 | 1 | — |
| +5 | K211866 | Bencox THR System | Corentec Co., Ltd. | 2021 | 0 | — |
| +5 | K182221 | Bencox Mirabo Cup Multi Hole | Corentec Co., Ltd. | 2019 | 3 | — |
| +6 | K252067 | Velora Acetabular System | Restor3D, Inc. | 2025 | 0 | — |