Bien-air Holding Sa

Bien-air Holding Sa C/o Bien-air Dental Sa

Yann Gâteau

Davide Sarchi

Daniel Nicolet

Myriam Mosimann

A handpiece suitable for dental or chirurgical applications, including a device for clamping a drilling tool, able to be actuated in rotation about an axis of rotation by a drive mechanism. The drive mechanism has a drive shaft rotatable about the said axis of rotation. The clamping device includes a clamp disposed inside the drive shaft for axially securing the drilling tool with respect to the axis of rotation, the clamp co-operating with a plunger for releasing the drilling tool, as well as a radial guide bush of the drilling tool, rotating integrally with the drive shaft. A selective angular coupling mechanism exerting an angular holding torque between the clamp and the guide bush or respectively the drive shaft, the value of which being inferior to that corresponding to the slip threshold between the said clamp and the drilling tool.

Selective coupling device for a collet chuck

The present invention relates to a device and a method for measuring osseous quality.

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Biel/Bienne, Switzerland

Yann Gâteau