Surgical bur shank and locking collet mechanism
US6000940A · kind A · utility
23Cited by
4References
20Claims
0Family size
Inventors
Key dates
| Filing date | Apr 29, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Apr 29, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/17811
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A collet for holding a rotatable tool such as a bur or drill bit having a stepped shaft including a drive shaft having a stepped internal diameter mating with the external diameter of the bur or drill shaft, a plurality of hardened balls mounted in openings in the sleeve, a locking sleeve having a tapered surface movable with the force of a spring against the balls to force the balls against the shaft to lock the shaft in the sleeve. A rotatable locking collar is movable to release the spring force to release the shaft for removal and replacement of the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.