| 摘要 |
<p>A distractor (1) presenting a central portion (2); two partially threaded straight elements (3, 4) extending from opposite sides of the central portion (2) and connected to it by respective spherical articulated joints (5, 6); and two slides (7, 8), each movable axially along a respective straight element (3, 4). Each slide (7, 8) presents a prismatic main body (27); and two parallel arms (28) extending from the main body (27) and presenting respective aligned holes (29) through which the respective straight element (3, 4) fits. A regulating nut (31), movable along a respective straight element (3, 4) and interposed between the arms (28) of a respective slide (7, 8), provides for positioning each slide (7, 8) continuously and micrometrically along the respective straight element (3, 4). <IMAGE></p> |
