Angulated locking plate/screw interface
US8597334B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2009 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Aug 30, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/863
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for lockably engaging bone screws into a fixation plate may include a locking fixation plate including a threaded screw hole defined by an inner surface surrounding the threaded screw hole, the inner surface comprising an upper countersink and a threaded portion, the threaded portion comprising a pair of threads arranged in a double helix configuration, and a screw comprising a generally conical head tapering into a generally cylindrical shaft that ends at a tip and a single thread beginning near the tip and extending along the generally cylindrical shaft and onto the generally conical head, a thread height of the single thread being constant over a majority of the generally cylindrical shaft and tapering as the thread extends onto the head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.