Joint prosthesis for total lumbar arthroplasty by posterior approach
US8177811B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2009 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Apr 4, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7043
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The total arthroplasty joint prosthesis includes connectors (2, 4) fixed in the pedicles Vp of the spinal levels by anchoring screws (3), upper and lower connecting elements (5, 6) connecting the connectors (2, 4) to each other, and guiding and damping element (7) connecting the upper and lower connecting elements (5, 6), the guiding and damping element (7) and the upper and lower connecting elements (5, 6) being constructed with relation to each other so as to define at least one rotation and sliding axis C situated at the level of the upper superjacent vertebra Va of the instrumented segment Sr in order to limit the stresses on the anchoring screws (3) ensuring fixation of the connectors (2) in the superjacent vertebra Va.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.