PROBLEM TO BE SOLVED: To secure pushability of an operator when pushing a medical long body such as an endoscope forward inside the body cavity of a patient.SOLUTION: A medical long body 1 includes a bending mechanism 10 for which a plurality of annular components are combined, and the annular component 2 includes an annular body 3, a projection part 6 projected from the upper end part 3a of the body 3, and a recessed part 11 formed at the lower end part 3b of the body 3. The projection part 6 includes a first projection part 8 having a curved part 8a, and a second projection part 9 formed at the curved part 8a of the first projection part 8. The recessed part 11 includes a first recessed part 12 to be slidably engaged with the first projection part 8, and a second recessed part 13 formed at the first recessed part 12, to be slidably engaged with the second projection part 9.COPYRIGHT: (C)2014,JPO&INPIT【課題】内視鏡のような医療用長尺体を患者の体腔内で押し進める際に、術者のプッシャビリティを確保する。【解決手段】医療用長尺体1は、環状部品2を複数組み合わせた屈曲機構10を有し、環状の本体3と、本体3の上端部3aから突出した突起部6と、本体3の下端部3bに形成された凹部11と、を備えた環状部品2を有する。突起部6は、曲部8aを有する第1突起部8と、第1突起部8の曲部8aに形成された第2突起部9を有する。凹部11は、第1突起部8と摺動可能に係合する第1凹部12と、第1凹部12に形成された第2突起部9と摺動可能に係合する第2凹部13を有する。【選択図】図2
