Polyaxial bone screw locking mechanism
US6964666B2 · kind B2 · utility
256Cited by
42References
5Claims
0Family size
Inventor
Key dates
| Filing date | Apr 9, 2003 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | Feb 18, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw having a head and a shank. The shank having a ball thereon and the head having a socket for receiving the ball. The ball being externally threaded and the chamber communicating with the exterior of the head through a threaded bore. The ball being threadably received through the bore and being swivelable in the chamber after passing through the bore. The bone screw including at least one set screw that operably engages the ball to lock the head in position relative to the shank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.