| 摘要 |
PURPOSE: A pressure sensitive type drill is provided, which uses intensity difference of membrane and bone and prevents damage of membrane and bone. CONSTITUTION: A pressure sensitive type drill is constituted as follows. A part of power is used to rotation using a mechanical structure including a gear or a saw blade. A part of power has a structure of transferring and cutting off the power by pushing up in the vertical direction in rotation. By using the object having the dynamic energy including the spring or magnet, the transmission or cutting off of the power according to the intensity of pressure is performed by reacting on the external pressure.
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