Polyaxial screw system
US8092503B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Apr 10, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/701
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A polyaxial screw system includes a drive cap having a partition wall with a first side and an opposing second side, a passage extending through the partition wall. A sleeve projects from the second side of the partition wall, the sleeve and partition wall bounding a socket. A shaft outwardly projects from the first side of the partition wall. A screw has a threaded portion and a head formed on an end thereof. The head of the screw is at least partially disposed within socket of the drive cap. A collet is at least partially disposed within the socket of the drive cap. At least a portion of a compression cap movably extends through the opening in the partition wall so that the compression cap can selectively move the collet relative to the drive cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.