Medical, in particular dental treatment device having a sealing element

摘要

The device (1) has a sealing element (3) surrounding a rotatable shaft (2) extended through a central hole, where the device is designed as an adapter and intermediate or connection piece. A sealing body surrounds the hole and has a sealing surface attached to the shaft. The surface is movable relative to the shaft, such that distance between the surface and the shaft is varied. The element is designed, such that the surface is movable relative to the shaft by the connection of an instrument e.g. angle piece, to the device or by the detachment of the instrument from the device.