Polyaxial bone screw
US8663288B2 · kind B2 · utility
18Cited by
67References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2012 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Oct 22, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8605
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention generally provides a polyaxial fixation device having a shank with a spherical head formed on a proximal end thereof, and a receiver member having an axial passage formed therein that is adapted to polyaxially seat the spherical head of the shank. The polyaxial bone screw further includes an engagement member that is adapted to provide sufficient friction between the spherical head and the receiver member to enable the shank to be maintained in a desired angular orientation before locking the spherical head within the receiver member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.