Multi-axial screw with a spherical landing
US7875060B2 · kind B2 · utility
32Cited by
8References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Jul 2, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8685
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-axial screw assembly with a spherical landing surface is disclosed. The multi-axial screw assembly 100 includes a bone anchor 150, a head 130 with a spherical outer surface and an extension member 160 extending from the top of the head 130. The multi-axial screw is designed to attach a planar or semispherical end member of a plate to a vertebra. The plate is part of a spine fixation or stabilization assembly. The multi-axial screw provides multi-axial pivoting of the screw relative to the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.