Expandable intervertebral implant cage
US7094257B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Nov 25, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00173
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An expandable intervertebral implant having an external member and an internal member. The implant includes a locking arrangement having a first interlocking teeth structure formed on the external member and a second interlocking teeth structure formed on the internal member. The interlocking teeth structures of the external and internal members have engagement surfaces arranged in a non-perpendicular orientation relative to the direction of implant expansion. The locking arrangement is configured such that walls of the internal member are pulled or flexed toward the walls of the external member when compressive forces are applied to the implant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.