Bone screw system
US8267975B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2011 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Aug 29, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8625
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A set of screws sized and configured for fixing a Jones fracture in a fifth metatarsal bone of a patient by preserving a bone thread path. Each screw has a low profile head on a trailing end, a thread portion on a leading portion, and a smooth shank portion between the head portion and the thread portion. A first screw has a thread major diameter of between about 4.4-4.6 mm, a second screw a thread major diameter of between about 5.4-5.6 mm, and a third screw a thread major diameter of between about 6.4-6.6 mm. The thread portion of all the screws in the set has a set of identical thread profile characteristics comprising a pitch, a leading edge angle, a trailing edge angle, a leading edge radius, a trailing edge radius, and a land. Each screw size is provided in various preferred lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.