Expandable interbody fusion device with graft chambers
US8900312B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | May 19, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00005
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An expandable interbody fusion device includes superior and inferior endplates that are configured to receive a sequentially inserted stack of expansion members or wafers in interlocking engagement. The expansion members are formed to each have a generally U-shaped rearward facing opening. The superior and inferior endplates have openings through their outer surfaces in at least partial alignment and communication with the rearward facing openings of the expansion members. The inferior endplate has a fully bounded cavity for telescoping receipt of the superior endplate. The inferior endplate also has a fully bounded channel extending through the rear endwall thereof in direct communication with the rearward facing opening of at least one expansion member for the receipt of bone graft material into the device to promote fusion between opposing vertebral bodies of the spine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.