Bone screw and screwdriver
US5484440A · kind A · utility
311Cited by
35References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1994 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Aug 18, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/86
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone screw screwdriver and method for securely, positively locking a bone screw to the screwdriver. The screwdriver includes an extending handle through which a drive rod is slidingly disposed. A tongue at one end of the drive rod interlocks within a groove in the bone screw. The drive rod selectively locks within the handle to positively interlock the bone screw with the screwdriver. A tab on the screwdriver engages a corresponding recess on the bone screw to prevent rotation and removal of the bone screw from the screwdriver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.