Spring-loaded dynamic pedicle screw assembly
US7967848B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2008 |
| Grant date | Jun 28, 2011 |
| Priority date | — |
| Expiry date | Mar 26, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8695
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An assembly that includes a fixator component, a clamping mechanism, a screw head, a load sharing mechanism, and a blocker. The fixator component further includes a bulbous end, a neck portion, and a threaded end. The clamping mechanism is positioned around the neck portion of the fixator component. The load sharing mechanism is positioned in between the screw head and the bone fixator component. The screw head further includes a pair of diametrically opposed arms, a socket and a slot. The socket is positioned between the pair of arms and the slot is positioned above the socket. The socket is dimensioned and configured to house the bulbous end of the fixator component. The load sharing mechanism provides tensile resistance to the screw head and the blocker is adapted to engage the screw head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.