Bi-directional fixating/locking transvertebral body screw/intervertebral cage stand-alone constructs with vertical hemi-bracket screw locking mechanism
US9532821B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2012 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Mar 12, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2220/0025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bi-directional fixating transvertebral (BDFT) screw/cage apparatus is provided. The BDFT apparatus includes an intervertebral cage including a plurality of internal angled screw guides, a plurality of screw members, and a cage indentation adjacent to the screw guides that independently or supplemented by other screw locking mechanisms prevents the screw members from pulling out of the internal angled screw guides. The internal angled screw guides orient a first screw member superiorly and a second screw member inferiorly. The intervertebral cage is adapted for posterior lumbar intervertebral placement, anterior lumbar intervertebral placement, anterio-lateral thoracic intervertebral placement, or anterior cervical intervertebral placement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.