Spinal alignment apparatus and methods
US6802844B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Jun 2, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/7073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Spinal alignment apparatus includes bodies which connect to vertebra to be aligned, and elongated elements that connect to the bodies. The elements are adjustable relative to the bodies in multiple dimensions, with locking mechanisms that allow the alignment to proceed in an orderly fashion until a desired degree of correction is achieved. Each elongated element has a shaped end terminating in the first portion of the lockable coupling mechanism. The vertebral connector bodies each include a feature for attaching the body to a respective vertebrae, and the second portion of the lockable coupling mechanism. The feature for attaching the body to a respective vertebrae may include a pedicle screw or, alternatively, a shape such as a hook adapted for sublaminar engagement. The elongated element also preferably includes a length adjustment mechanism, such as a telescoping or threaded section to provide a desired length in conjunction with a desired degree of alignment. Various coupling mechanisms are disclosed to provide multiple degrees of freedom prior to fixation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.