Drill centering tool for removal of orthopedic plug
US8114090B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jan 6, 2005 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Sep 28, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/175
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tool centers an elongated drill bit within an elongated canal surrounded by bone tissue. A sleeve having an expandable diameter is internally threaded. The sleeve threadedly engages an externally-threaded cylindrical guide. A key includes a handle at one end of an elongated rod. The rod includes transversely-protruding buttons for engaging the guide so that rotation of the handle produces rotation of the guide to cause radial expansion of the sleeve. This results in symmetrical contacting of the interior surfaces of the bone tissue, thereby creating a vertical, centered channel with respect to the bone, that extends through the tool for guiding the drill bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.