Intramedullary fixation device for metaphyseal long bone fractures and methods of using the same
US6706046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Dec 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8057
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fixation system includes a device having a nail portion and a plate portion, preferably horizontally and vertically offset relative to the nail portion by a neck portion. The nail portion includes threaded screw holes, and the plate portion includes longitudinally displaced peg holes, each of which is adapted to orient a peg in a different orientation from the others. The system also includes unicortical screws having a reasonably large head adapted to seat against the outer surface of the bone and a threaded shaft adapted to engage in the screw holes, and pegs adapted to engage in the peg holes. Bone is clamped between the nail portion and the head of the unicortical screws. The pegs provide stabilization and support for subchondral fragments. Moreover, as the pegs preferably enter the subchondral fragments from a plurality of directions, additional fixation of the device into the bone is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.