Polyaxial pedicle screw having provisional fastening means
US9603627B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 2012 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Apr 26, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A polyaxial pedicle screw includes a screwed shaft section for anchoring the pedicle screw in a vertebra, on one axial end of which a shaft head is configured which is coupled in a rotating and/or pivoting manner as well as in a tensile-force transmitting manner to a receiving sleeve for a longitudinal support. The receiving sleeve has a fastening means for selective positional fastening of the receiving sleeve with respect to the shaft section, the fastening means at least consisting of an inlay/pin mounted in the receiving sleeve and acting on the shaft head, and a locking element acting on the inlay/pin. The inlay/pin is configured with attachment points or engagement elements, which are not covered or overlapped by the locking element, for the provisional introduction of a compressive force on the inlay/pin parallel to the locking element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.