Patent ID: 6270453
Filing Date: 2001-08-07
Classification: A61B

Abstract:
A bending device for an examining insertion tube which is inserted in an examined object to inspect inside, said bending device operating to bend a head portion of the examining insertion tube, comprising:a plurality of cylindrical members; andfour wires linking said cylindrical members in a cylindrical manner;wherein each of said cylindrical members comprises:two first protruding portions formed at both ends of a first diameter of said cylindrical member and protruding from a top end of said cylindrical member i an axial direction of said cylindrical member;two second protruding portions formed at both ends of a second diameter of said cylindrical member and protruding from a bottom end of said cylindrical member in the axial direction of said cylindrical member;two first small cylindrical members for two of the four wires to pass through, respectively, said two first small cylindrical members being fixed on an outer circumferential face of said cylindrical member and in vicinities of said first protruding portions, respectively; andtwo second small cylindrical members for the rest two of the four wires to pass through, respectively, said two second small cylindrical members being fixed on the outer circumferential face of said cylindrical member and in vicinities of said second protruding portions, respectively;wherein said first diameter is approximately perpendicular to the second diameter; andwherein said plurality of cylindrical members are linked by the wires, said first protruding portions of one cylindrical member contacting respectively said second protruding portions of another cylindrical member adjacent and above said cylindrical member.