Bone plate assemblies with backout protection and visual indicator
US8211154B2 · kind B2 · utility
25Cited by
43References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8047
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone plate assembly includes a plate, at least one bushing, and at least one bone screw. The bushing is positioned within a through hole of the plate. The bushing and screw are configured to engage each other to inhibit the screw from backing out. The screw includes a visual indicator surface that is visible to the operator during insertion of the screw through the bushing and plate. The bushing is configured to cover at least a portion of the visual indicator surface to show when the bushing and screw are properly engaged to inhibit backout of the screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.