Intervertebral spacer device having a multi-pronged domed spring
US6645249B2 · kind B2 · utility
188Cited by
28References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2001 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Mar 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S606/907
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intervertebral spacer device having a pair of opposing plates for seating against opposing vertebral bone surfaces, separated by a spring mechanism. The preferred spring mechanism is a multi-pronged domed spring which is coupled to the upper plate by set screws. The spring includes a socket formed in the peak thereof and mounts onto a ball-shaped head extending outwardly from the lower plate. The spring and post members are thereby flexibly coupled such that the upper and lower plates may rotate relative to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.