| 摘要 |
<p>The instrument has a hollow shaft (3) mounted to rotate inside a tubular sheath (1) using a rolling bearing (4), and has an upstream part (5), and a downstream part (6). The part (6) has an upstream part (11) partially gripping the part (5), and a downstream part (12) whose inner diameter corresponds to outer of a tool (13). A clamp (14) is integrated in rotation with the shaft and movable along axis (AA). A clamp (14) is moved longitudinally either towards upstream or downstream so that jaws (17) penetrate below or escape to the part (5) to lock and unlock the tool, respectively.</p> |
