| 摘要 |
The present invention relates to a device for fastening a rotatory drivable tool to the head of a technoscope by screwing a tool holder provided at the proximal side end of the tool to the distal end of the shank of a drive spindle. To secure undesired detaching of the tool from the technoscope, the tool holder is additionally screwed onto and against a cylinder sleeve which is run through by the shank of the drive spindle and rotatably mounted in the technoscope head.
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