Patent ID: 6527706
Filing Date: 2003-03-04
Classification: A61B

Abstract:
In an endoscopic insertion instrument having a rigid tip end section with an observation window and an illumination window, an elongated flexible body, and an angle section connected between said rigid tip end section and said flexible body:a join construction configured to connect said angle section to said flexible body of said endoscopic insertion instrument, comprising: a couple of connecting rings axially extended toward each other from joining ends of said angle section and said flexible body and fitted one on the other one in an overlapped state; at least one aperture provided in an outer one of said connecting rings to supply solder to overlapped joining surfaces of said connecting rings at the time fixedly soldering said connecting rings to each other; at least one operating wire threaded and extended through said angle section and said elongated flexible body of said insertion instrument via said connecting rings configured to flexibly bend said angle section; a closed sheathing coil coextensively provided in said flexible body configured to encase said operating wire; an anchor pipe fixedly provided in the inner one of said connecting rings to fixedly anchor a fore end of said sheathing coil; and a fluid-tight shield portion formed on and around outer periphery of said closed sheathing coil over a predetermined axial length at least from a proximal end portion of said inner connecting ring, to prevent a flux from intruding into said closed sheathing coil at the time of soldering said connecting rings together.