Mounting mechanisms for pedicle screws and related assemblies
US7615068B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2004 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Dec 31, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00991
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pedicle screw is provided that includes an upwardly extending collet. The collet may include downwardly extending slots that define deflectable segments therebetween. When a spherical element or other structure, e.g., a non-dynamic stabilizing element, is positioned around the collet, introduction of a set screw causes outward deflection of the upstanding segments into engagement with the spherical element. A snap ring may be interposed between the collet and the spherical element to facilitate positioning therebetween. In an alternative embodiment, a non-slotted collet is employed. In such embodiment, the collet and the spherical element may be threadingly engaged and may include a snap ring therebetween. The pedicle screw subassemblies may be incorporated into a spinal stabilization system which may include a dynamic stabilizing member to provide clinically efficacious results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.