Artificial intervertebral disc
US6645248B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Aug 23, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an artificial intervertebral disc for implanting between two vertebral bodies (W) comprising two end plates (1, 2) which bound a hollow space (4), which is filled with an elastically and/or plastically deformable nucleus (3), at two opposite sides, with the hollow space (4) being enclosed by a tubular fiber ring (5) such that the end plates (1, 2), together with the fiber ring (5), bound the hollow space (4) and the end plates (1, 2) are in tensile connection with the fiber ring (5). The fiber ring (5) is designed as elastically extensible in the radial and axial directions, with the fiber ring (5) having a larger modulus of elasticity than the nucleus (3) and the nucleus (3) and the fiber ring (5) interacting such that the elastic properties of the artificial intervertebral disc show a non-linear behavior with increasing deformation at least with respect to a compression force (F).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.