Static and dynamic cervical plates and cervical plate constructs
US8182518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Jul 25, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8042
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cervical bone plate includes a graft window that allows access to and/or visualization of a bone graft area of the cervical spine after attachment of the present cervical plate to the vertebrae. The window is preferably, but not necessarily, sized for maximum exposure of the graft area and/or the vertebral body without compromising plate strength, particularly with respect to federal standards for such devices. The window is centrally positioned on the plate and is sized to provide alignment of the plate onto the vertebrae at the base of the vertebra fastener or screw holes of the plate. In a dynamic form of this cervical bone plate, the graft window expands and contracts with respective expansion and contraction of the dynamic plate after attachment to the vertebrae (i.e. “dynamizes”). In another form, a three-component dynamic bone plate is configured such that a middle component accepts an identical end component at both ends of the middle component. The end component is a 180° interchangeable part. The middle component and the end component have cooperating configurations and complementarily configured grooves that allow sliding movement between the middle component and the e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.