Compression screw system
US4095591A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1977 |
| Grant date | Jun 20, 1978 |
| Priority date | — |
| Expiry date | Jan 27, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/746
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An extension is provided for being nonrotatably fixed to a lag screw that is to be anchored to the head of a femur or other bone in a manner so as to allow compression to be applied to a fracture. The extension extends outward of the bone when attached to the lag screw and when the lag screw is anchored to the bone to allow a compression plate to be easily positioned thereon. The cross-section of the extension is substantially the same as the cross-section of the lag screw to allow the compression plate to be easily and quickly passed onto the lag screw from the extension once the compression plate has been positioned on the extension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.