Systems and devices for dynamic stabilization of the spine
US8425562B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2009 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Feb 10, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7031
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dynamic stabilization system for use with a spinal motion segment includes a first bone anchor assembly, a second bone anchor assembly, a resilient element, and a sheath. The resilient element includes an end portion engageable with the first bone anchor assembly and a resilient portion engageable with the second bone anchor assembly. The resilient element provides resilient resistance when the first and second bone anchor assemblies are moved toward one another and provides no resistance and is separable from the second bone anchor assembly when the first and second bone anchor assemblies are moved away from one another. The sheath surrounds the resilient portion and articulation surface of the second bone anchor assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.