Orthopedic prosthesis having anti-backout screw
US6086614A · kind A · utility
128Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jan 23, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2230/0017
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable orthopedic prosthesis includes a screw having a threaded shank and a head. The head includes a plurality of splines extending outwardly of the diametrical extent of the head. A first implantable prosthetic element has a threaded bore for receiving the threaded shank of the screw in threaded engagement. A second implantable prosthetic element has a shoulder-stepped bore for receiving the threaded shank therethrough and for engaging the head. The bore includes an annular groove for receiving the splines of the head and defines a shoulder for engaging the splines to prevent backout of the screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.