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    • 2. 发明申请
    • ENDOSCOPE
    • US20220273162A1
    • 2022-09-01
    • US17632072
    • 2020-12-25
    • HOYA CORPORATION
    • Yoshitsugu HOSOGOE
    • A61B1/005
    • An endoscope includes: a hardness adjustment cable that is arranged in an insertion portion and includes a hardness adjustment sheath, a hardness adjustment wire inserted in the hardness adjustment sheath, and a coupling tool coupling the hardness adjustment sheath and the hardness adjustment wire; a retaining member fixed to the hardness adjustment wire on an operation unit side of the hardness adjustment cable; a cam mechanism that is coupled to the retaining member when tension is applied to the hardness adjustment wire; a sheath fixing unit coupled to the hardness adjustment sheath on the operation unit side of the hardness adjustment cable; and a guide frame that is arranged between the insertion portion and an operation unit and that holds the cam mechanism and the sheath fixing unit so as to be independently movable in a longitudinal direction of the insertion portion.