Headless compression screw with integrated reduction-compression instrument
US9113976B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 12, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/0046
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw is provided having first and second threaded portions of different diameter separated by a middle portion that is unthreaded so that the bone screw may be inserted into a pair of adjacent bone fragments and used to compress the fragments together by driving the screw into a hole drilled in the fragments. An installation tool is also disclosed for threadably engaging one end of the bone screw and is used to initially drive the screw into the bone hole. Thereafter, a screwdriver may be inserted through the tool and into engagement with a recess in the bone screw and may be used to drive the screw fully into the bone and to separate the bone screw from the installation tool. A method of installation is further provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.