Screw for osteosynthesis and arthrodesis
US9504504B2 · kind B2 · utility
4Cited by
73References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2015 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jun 2, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/864
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a self-tapping and self-boring osteosynthesis screw for compressive orthopaedic surgery, characterised in that, in the bone engagement regions, at both the distal portion (A1a) and at the proximal portion (A2a), the sum of the angles defining the outer taper of the shank (f) and the taper of the crest line of the screw thread pitch (P) is higher than 45°, and in that the leading portion (i.e. the most distal one) of each thread includes a plurality of cutting edges (AR) obtained by stock removal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.