Screw driver for a multiaxial bone screw
US8394108B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2011 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | May 31, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A screwdriver for driving a multi-axial its distal end for engaging the head of the bone screw for joint rotational movement. The screw driver includes an outer retention sleeve within which the inner shaft rotates freely. The outer retention sleeve releasably attaches to the yoke of the bone screw. In another configuration, the screwdriver comprises a screw engagement member affixed to the shaft for joint rotational movement therewith, the screw engagement member comprising a stop sized to seat within a slot of the bone screw yoke, the stop being configured to rotate the yoke upon rotation shaft. A releasable retention member is provided on the screw engagement member for releasably attaching the screwdriver to the bone screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.