Compression screw assembly
US4641640A · kind A · utility
111Cited by
11References
4Claims
0Family size
Inventor
Key dates
| Filing date | Nov 28, 1984 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Nov 28, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/8891
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A compression screw assembly for applying compression to a fractured bone includes a lag screw, a compression plate including a hollow barrel member adapted to receive the lag screw in at least one fixed orientation, a wrench assembly adapted to releasably engage the lag screw in axial alignment therewith, and apparatus having surface contours complimentary with the outer surface of the lag screw and inner surface of the barrel member for being optionally insertable into the barrel member to prevent axial rotation of the lag screw with respect to the barrel member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.