Securing fasteners
US11172967B2 · kind B2 · utility
1Cited by
115References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2019 |
| Grant date | Nov 16, 2021 |
| Priority date | — |
| Expiry date | Jul 27, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8685
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fastener, for example a bone screw, is sized to pass into an aperture of an implant, for example, a bone plate, the fastener having an anchor portion engageable with body tissue, and a head portion formed by an assembly of an insert and an anchor extension. The insert and anchor extension cooperate to form a reduced dimension passable into the aperture, and an expanded dimension not passable out of the aperture. The size of the assembly may be configurable, for example, by tabs, ramped surfaces, or an expanding diameter of a threadable insert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.