Expandable intervertebral fusion implant having improved stability
US6332895A · kind A · utility
314Cited by
7References
5Claims
0Family size
Inventor
Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00179
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An expandable intervertebral implant includes two separate shells having corrugated mating surfaces which resist compression and shifting when the parts are distracted by a special installation tool. The shells include two planar wings which provide a large bearing area against adjacent vertebral endplates to prevent the implant from sinking into cancellous bone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.