Orthopaedic screw variable angle connection to a longitudinal support
US6423064B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7062
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The bone screw according to the invention for connection at a variable angle with a support bar for osteosynthesis, in particular a pedicle screw for implants for correcting and stabilizing a spinal column, has a threaded shaft (2) for screwing into a vertebra (3) and with a screw head (4) for fixing to a support bar (13), the screw head (4) being formed as a partial sphere with a frustoconically tapered peg (6) having a threaded bore (5), the tapered peg (6) with its threaded bore (5) extending at an acute angle to a longitudinal axis of the threaded shaft (2). The tapered peg (6) is securable by means of a screw (10) engaging in the threaded bore (5) to a clamping sleeve (11) forming a seat (12) for the support bar (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.