Chucking device for a medical or dental handpiece
US8870570B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2010 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Sep 11, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C3/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical or dental handpiece includes a tool holding/releasing device with a hollow shaft, a first holding unit and a second holding unit. The hollow shaft can be put into a drive motion for holding a treatment tool. The hollow shaft extends along a central axis and has a tool receptacle opening. The second holding unit is separate from the first holding unit and axially offset from the first holding unit relative to the central axis. Both holding units are designed to axially secure a treatment tool held in the hollow shaft and to transmit a torque to the treatment tool. Both holding units have at least one shaped element each and a bore penetrating the outer wall of the hollow shaft. The shaped element can be held in such a way that it projects through the bore into the interior of the hollow shaft. A locking sleeve is operatively connected to the shaped elements and can move relative to the hollow shaft. The locking sleeve surrounds the hollow shaft and an operating element operatively connected to the locking sleeve for the movement or sliding of the locking sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.