Slide-type anti-backout device for prosthesis
US8454666B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2010 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jun 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7059
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A slide-type cervical plate includes an anti-backout device (2) preventing the vertical movements of the bone anchor screws (3) and which consists of first vertical-blocking elements (71) capable of deforming elastically in a first direction so that an anchor screw (3) can be introduced into the corresponding bore (4) and of second vertical-blocking elements (8) capable of deforming elastically in a second direction different than the first so that another anchor screw (3) can be fitted into another bore (4), the first and second blocking elements deforming elastically when a combined external load in a vertical direction and in rotation in the clockwise direction is applied to the anchor screws (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.