As for this invention, the removal and re-installation possible rectilinear condition tool for dentistry which revolution possibly is designed or regards the instrument for the surgery. This instrument is installed, the hollow shaft which is installed in the tubular sheath (1) and the aforementioned tubular sheath (3), the aforementioned high-level component the high-level component (5) and the aforementioned shaft the high-level section which holding is done partly (11) and the aforementioned tool (13) the downstream section which possesses the inside diameter which matches major diameter substantially (12) possessing (5), the downstream component which becomes the hollow shaft which consists of (6) (3) and with the aforementioned hollow shaft (3) being revolution possible, the aforementioned axis (AA) paralleling, movement possibly, the aforementioned high-level component of the aforementioned shaft the clamp where (5) inside is arranged in the same axis (14) with,The aforementioned jaw (17) the aforementioned hollow shaft (3) the aforementioned high-level component (5) advancing inside, the aforementioned clamp (14) having with the expedient which is moved to axial direction with the method holding of being the aforementioned tool secure, it becomes.< Selective figure >Figure 1この発明は、脱着可能な直線状ツールが回転可能に設計された歯科用又は外科用の器具に関する。この器具は、管状シース(1)と、前記管状シースに装着された中空シャフト(3)であって上流部材(5)と前記シャフトの前記上流部材(5)を部分的に握持する上流部(11)及び前記ツール(13)の外径と実質的に一致する内径を有する下流部(12)を有してなる下流部材(6)とから成る中空シャフト(3)と、前記中空シャフト(3)と共に回転可能で前記軸(AA)に沿って移動可能に装着され、前記シャフトの前記上流部材(5)の内部に同軸に配置されたクランプ(14)と、前記顎部(17)が前記中空シャフト(3)の前記上流部材(5)内に進出して前記ツールをしっかりと握持する方法で前記クランプ(14)を軸方向に移動する手段とを備えて成る。【選択図】図1
