| 摘要 |
Assembly for coupling a dental handpiece or contra-angle onto the support connecting them to the dental unit, such as a motor, comprising water and air supply means for the spray-wetting of the work target of the instrument which it supports and, if appropriate, means for the supply of electrical battery current situated in the head of the handpiece or the contra-angle for the purposes of illuminating the work target, as well as, if appropriate, supply means for fibre optics, characterised in that the rear face of the handpiece (1) is provided with a projecting ring (6) made of insulating material, and in that the motor (2) has an annular hollow shape (7) receiving the said ring when the handpiece is mounted on the motor. …<IMAGE>… |
