Spinal plate assembly having locking mechanism
US10456181B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2016 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | May 20, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7059
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spinal plate assembly comprising a base plate defining an opening adjacent at least one aperture for receiving a bone screw which attaches to a spinal vertebrae. The aperture includes a seat and an annular groove having an end wall. The assembly comprises a locking mechanism having a split ring partially recessed within the annular groove and moveable between a locked condition partially blocking the aperture for retaining the screw in the seat and an unlocked condition radially deformable into the annular groove for permitting screw removal. The split ring has a proximal end and a distal end. The distal end is configured to engage the end wall of the annular groove. The locking mechanism comprises a rotating member retained within the opening of the base plate and having a notch configured to engage the proximal end of the ring to drive the ring toward the unlocked condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.