Variable angle bone screw having a hardened head
US11278334B2 · kind B2 · utility
0Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2019 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Jan 9, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/8655
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A variable angle bone screw includes a first portion and a second portion that is separate from the first portion and configured to be attached to the first portion. The first portion defines at least a portion up to an entirety of the threaded head of the variable angle bone screw. The second portion defines at least a portion up to an entirety of the threaded shaft of the variable angle bone screw. The threaded head can have a first material hardness, and the threaded shaft can have a second material hardness that is less than the first material hardness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.