| 摘要 |
<p>A support device for a dentist's drill comprising a support (14), an articulated arm (44) comprising two articulated quadrilateral devices (46, 48) disposed in series with one another, and adjustment means (64) operable to vary the direction of the working axis (54) of the drill. The support (14) is provided with fixing means (16) for connecting it to a seat back (18) of a dentist's chair (20) and the articulated arm (44) can assume a working condition in which the two articulated quadrilateral devices (46, 48) are disposed at 90° to one another.</p> |
