Tip adaptor device for endoscope

Abstract

Abstract PURPOSE:To form the outside diameter of the tip part of an insertion part as thinly as possible by providing a male screw for screwing and fixing a connecting body extending over two front and rear stages of a tip constituting part, and making the nominal diameters of said front and rear male screws to the same. CONSTITUTION:An adaptor device is formed so that in a state that a screwing body 32 is assembled to a connecting body 34 and an adaptor body 35 is screwed to the connecting body 34, the screwing body 32 is inserted externally to the outside periphery of a body 28 and its female screw 39 is made free in both the axial direction and the rotational direction between male screws 37, 38 of the pre-stage of a first space 33. Subsequently, this screwing body 32 is pushed into the rear in the axial direction, a fitting part 43a of the adaptor body 35 is fitted to the outside periphery of the tip side of the tip constituting part body 28, and also, its projecting surface is rotated so as to be fitted to the positioning surface, and its positioning in the rotational direction is executed. In such a case, the portion of a gap of height of the male screw of a conventional tip constituting part and the connecting body are made unnecessary, and by that portion, the outside diameter of the insertion part can be thinned.

Inventors

• 👤 Masahiro Kumakura
• 👤 熊倉　昌浩

Bibliographic Details