Customized posterior atlantoaxial reduction fixatorwith screws and rods
US12150678B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 18, 2020 |
| Grant date | Nov 26, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/037
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A customized posterior atlantoaxial reduction fixator with screws and rods, including two supporting-screws, two pulling-screws, two variable cross section fixing rods, a bracing beam, two lock nuts and two pressing rod nuts. Each of the supporting-screws includes a first head and a first body, and each of the pulling-screws includes a second head and a second body; tips of both the first body and the second body are provided with a tapered thread; both the first head and the second head are provided with nail grooves inside, with U-shaped grooves on the sides; each of the a plurality of nail grooves is provided with an internal thread inside; the second head is provided with a long arm nail groove, with an annular recess configured on the middle part of an outer wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.