Cervical disc replacement
US6972038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2004 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Feb 11, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/911
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for replacing at least a portion of an intervertebral disc in a spinal column includes: a first member having a first vertebral contact surface for engagement with an endplate of a first vertebral bone in the spinal column and a first articulating surface having a single saddle surface; and a second member having a second vertebral contact surface for engagement with an endplate of a second vertebral bone in the spinal column and a second articulating surface having a single saddle surface wherein: an intervertebral disc space is defined substantially between the first and second endplates of the first and second vertebral bones, and the first and second members are operable to articulate relative to one another, when disposed in the intervertebral disc space, about at least one of: (i) a first center of rotation for at least one of flexion and extension that is located above the first and second articulating surfaces outside the intervertebral disc space, and (ii) a second center of rotation for lateral bending that is located below the first and second articulating surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.