Patent ID: 6454703
Filing Date: 2002-09-24
Classification: A61B

Abstract:
In an endoscopic insertion instrument, having an angle section connected contiguously to a proximal end of a rigid tip end section thereof and adapted to be manipulated through a plural number of operating wires, said angling section including a flexible tube formed by pivotally and successively connecting a plural number of angle rings through pivoting pins, said operating wires being extended axially through said flexible tube via said pivoting pins and having fore ends thereof fixedly anchored at operating wire fixation points in boundary portions between said flexible tube and said rigid tip end section to bend said angling section in an arbitrary direction by pulling or pushing said operating wires,an angling joint tube for said angle section of said endoscopic insertion instrument, comprising: at least an operating wire fixation point shifted by a predetermined angle in circumferential direction of said flexible tube from a normal position on an axial extension line from a row of pivoting pins to fix at least one operating wire in an angularly shifted position; a wire guide fixedly mounted on a wire guide pin fixedly planted at least on one of angle rings, which are connected by a foremost one in said row of pivoting pins, and arranged to guide said one operating wire in such a way as to evade at least a top portion of said foremost pivoting pin as said operating wire is manipulating in a pulling or pushing direction.