Expandable vertebral prosthesis
US8668740B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2012 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Oct 9, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to an expandable prosthetic implant device for engagement between vertebrae generally comprising an inner member, outer member, and gear member positioned coaxial with respect to each other such that the inner and outer members are moveable relative to each other along an axis. The gear member is axially fixed to the outer member and freely rotatable with respect to the outer member and the gear member threadedly engages a threaded portion of the inner member to translate inner member along the axis. The implant is configured to engage the vertebrae in a predetermined alignment and the gear member includes gear teeth exposed to the exterior and configured to be accessible by a tool member at a plurality of angular positions around the perimeter of the implant device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.