Tool for driving pedicle screws
US5946988A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8891
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tool for driving pedicle screws into vertebrae of the human spine has a shaft preferably with a handle at one end and, at the opposite end, a holder for receiving a preferably ring-shaped head which is flattened on opposite sides. The tool has a first clamping jaw (18) secured to the shaft (12), and a second loose clamping jaw (20) including a lateral projection which is tiltably received by the first clamping jaw (18). The tool has an axially slidable actuating member (32) which is guided along the shaft (12). The front end of the actuating member (32) engages the rear end of the second clamping jaw (20) and is preferably axially urged towards the second clamping jaw (20) by a threaded driving means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.