PROBLEM TO BE SOLVED: To provide a marker for body tube introduction, in which the hardness of a marker is also important because an accident is also assumed when the body tube introduction is caught on other equipment and damaged during treatment in a body, and also, when the body tube introduction has to be bundled up with a metallic thing, it is loosened during use if Vickers hardness is small, particularly a marker is prevented from being damaged by a stress received and loosened when the wire is bundled up by wire rods and a wire portion turned with a marker is bent in the body, accordingly, the marker for body tube introduction having high Vickers hardness is desirable, however the device for raising hardness has not been done conventionally, and then, the marker for body tube introduction having high hardness is expected without impairing the effectiveness of the production.MEANS FOR SOLVING THE PROBLEM: There is provided a marker for body tube introduction that is constituted of a material having Vickers hardness of 200 or more and 600 or less.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】体内管導入物用マーカーにおいては,体内での治療中に体内管導入物が他の器具に引っ掛かって破損するなどのアクシデントも想定されるため,マーカーの硬度も重要である。また,体内管導入物が金属製のもので束ねなければならない場合,ビッカース硬度が小さいと使用中にゆるんでしまう。特に線材を束ねたワイヤーの場合にマーカーで回されているワイヤー部分が体内で曲がる際に応力を受けてマーカーに傷がつき,ゆるむことを防止する。このようなことから,ビッカース硬度を高い体内管導入物用マーカーが望ましいが,従来では,硬度を高くするための工夫はなされてこなかった。そこで,生産の効率性を損なうことなく,硬度の高い体内管導入物用マーカーが望まれていた【課題を解決するための手段】ビッカース硬度が200以上600以下の材料で構成された体内管導入物用マーカーを提供する【選択図】図1
