Contra-angle handpiece for rotary surgical instruments, in particular in dental surgery
US7156659B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2003 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Jul 4, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/185
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A driven appliance, such as a contra-angle handpiece for surgical instruments, in particular for dental surgery, includes a handle, a neck and a head for receiving an instrument. The handle and the neck of the contra-angle handpiece each receive a drive shaft, respectively, an input shaft and an output shaft, which are linked to each other by a gear train. The input shaft and the output shaft are slidingly mounted in their respective bodies, which forms a sheath for the two shafts. The shafts are maintained and supported on stops arranged on the corresponding sheathes through a single elastic element which is housed in the bend linking the handle to the neck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.