Surgical drill and bur for use therewith
US4811736A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Apr 20, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/1646
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical drill is disclosed which includes an electric motor and an elongate tubular support sleeve. A drill bur is mounted so as to extend through the support sleeve and extend outwardly from the free end thereof, and the bur includes a shaft which mounts a plastic sleeve bearing for relative rotation therewith. The bearing contacts the internal bore of the support sleeve, so as to provide a seal therebetween which prevents the passage of debris past the bearing and into the support sleeve. Also, a portion of the plastic sleeve bearing is visible during use, and the bearing includes a distinctive color which is correlated to the particular configuration or size of the cutting tip of the bur, to thereby facilitate its identification during use of the drill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.