Variable angle bone plate system
US11457964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2018 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Aug 23, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/866
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns a bone plate system comprising: a bone fastening element comprising a shaft with a first thread with a first lead length, the fastening element further comprising a head with a second thread on its outer surface, the second thread having a second lead length, the outer surface having a first hardness; and a bone plate with a second hardness which is smaller than the first hardness, the bone plate comprising a non-threaded through hole in a non-assembled state for receiving the bone fastening element, the hole comprising a first hole portion with a first three-dimensional shape and a second hole portion with a second, different three-dimensional shape. The first lead length substantially equals the second lead length, and the second thread is arranged to irreversible deform the wall of the hole to form a female thread on the wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.