Favored angle pedicle screw with one or more oblique bore sections for preventing stress concentrations
US11864799B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2021 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Mar 5, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7038
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A favored angle screw assembly and a rod receiver body for a favored angle pedicle screw assembly. The favored angle screw assembly includes a pedicle screw and the rod receiver body. The rod receiver body includes a tubular wall having a first end with a first opening, a second end with a second opening, and a bore extending from the first opening to the second opening. The bore features a first bore section adjacent to the first opening, a second bore section adjacent the second opening, and a third bore section having a first end adjacent to the first bore section and a second end adjacent to the seat surface. The third bore section defines a transition surface that conforms to a side wall of an oblique three-dimensional shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.