Modular uniplanar pedicle screw assembly for use with a polyaxial bone fastener
US11607252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2020 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Dec 8, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/564
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A modular uniplanar pedicle screw assembly for use with a polyaxial bone fastener. The modular assembly comprises a uniplanar tulip assembly adapted to be coupled to a head of the polyaxial bone fastener, wherein the uniplanar tulip assembly includes a longitudinal slot. The modular assembly further includes an adapter having a lower portion and an upper portion. The lower portion is sized and shaped to be received in a recess of the bone fastener head. The upper portion extends from the lower portion and is adapted to slide along the longitudinal slot of the uniplanar tulip assembly to allow movement of the uniplanar tulip assembly in a first plane along a direction that is parallel to a longitudinal axis of the longitudinal slot, the longitudinal slot preventing movement of the uniplanar tulip assembly in a second plane lateral to the first plane relative to the bone fastener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.