< Topic >Especially as removal of bone tissue with endoscope disposal to the rachis with efficient form is made possible, visual control of the disposal by the user is made usual possible.SolutionsIt has with the optical probe (endoscope) in order to insert to the cavity of the cannula and the cannula which have the distal (2036) end which has the form which inclines vis-a-vis the symmetrical axis of the cutting tool, the aforementioned cannula is formed, as the cutting tool of air the distal (2036) territory of the distal (2036) end has had the cutting edge 26 which carving/moment facilities is done in the edge of the wall of the cutting tool in the cutting tool of this air.< Selective figure >Figure 5.1【課題】特に脊柱への内視鏡処置での骨組織の除去を効率的な形態で可能にするとともに、利用者による処置の視覚的なコントロールを常時可能にする.【解決手段】切削工具の対称軸線に対して傾斜した形状をもつ遠位端部を備えるカニューレと、カニューレの空洞へ差し込むための光学プローブ(内視鏡)とを備え、前記カニューレは中空の切削工具として構成され、この中空の切削工具において遠位端部の遠位領域は切削工具の壁部の縁部に刻設された切れ刃26を有している。【選択図】図5.1
