Intervertebral disk prosthesis or artificial vertebra
US7166131B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jan 26, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intervertebral disk prosthesis having an essentially hollow cylindrical base element (1) which is provided with a casing (2) that is embodied as a bellows, a top end (3), and a bottom end (4), and a central longitudinal axis (5). The base element also includes an upper apposition plate (6), which is disposed perpendicular to the longitudinal axis (5) at the top end (3) of the base element (1) and rests on the base plate of the vertebra, and a lower apposition plate (7), which is arranged perpendicular to the longitudinal axis (5) at the bottom end (4) of the base element (1) and leans on the cover plate of a vertebra. The casing (2) serves a spring element having a defined spring rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.