Cervical plate locking mechanism and associated surgical method
US8721693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2007 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Feb 18, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8605
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The cervical plate locking mechanism of the present invention is elegant in its design and effective in its performance, and utilizes a plate with holes that each incorporate a locking lip structure and locking screws that each incorporate a head portion having petal structures that are outwardly biased prior to insertion via an internally-disposed c-ring or the like. Advantageously, the lead-in torque of each of the locking screws is less than the lead-out torque of each of the locking screws. Thus, reverse threading or backing out is prevented. Alternatively, the cervical plate locking mechanism of the present invention utilizes a locking plate having petal structures that are inwardly biased prior to insertion of the head portion of the locking screws via an externally-disposed c-ring or the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.