Spine osteosynthesis instrumentation for an anterior approach
US5702395A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1995 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | May 10, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The instrumentation comprises at least two blocks (1) adapted to transversely interconnect two rigid rods (2, 3) axially slidable in these blocks which are provided with bone anchorage screws (7, 8) suitable oriented and slides (4, 5) which are slidable in longitudinal recesses (6, 7) receiving the respective rods (2, 3) which may be in this way clamped by the slides after the latter have been completely closed. Each block (1) has in the transverse direction from the anterior part to the posterior part a curved general shape corresponding to the antero-lateral anatomy of the vertebral bodies, the interior surface being consequently concave while the exterior surface is convex. The instrumentation obtained by the assembly of two blocks (1), anchorage screws and stiffening rods (2, 3) forms a very stable rectangular structure restoring the axial continuity of the vertebral column, avoiding correction losses and facilitating the consolidation of the bone graft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.