Reversible bone screw lock
US5478342A · kind A · utility
135Cited by
13References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Jun 30, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/8655
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical bone screw including a lock to lessen the possibility of pull-out or screw-out. The screw may be any bone screw including a cannula. A wire spring is inserted partially into the cannula prior to use. Once in position, the wire spring is pushed further down the cannula until its ends may project out side openings in the screw. These projections lock the screw in place. Further depression of the wire spring disengages them so the screw may be removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.