04040413 is referenced by 142 patents and cites 3 patents.

One or more inflatable balloons are provided on the outer surface of the tube of an endoscope which encloses the fiber optical light transmitting bundle. When only one balloon is provided, the balloon is provided on one side of the tube near the end thereof to enlarge the space within a body cavity in one direction and the flexible part of the tube may be bent in said direction. When moe than one balloon is provided, one of the balloons is selectively inflated to enlarge the space within the body cavity in the desired direction. In a preferred embodiment of the invention, the balloons are located at equal intervals around the tube. In another embodiment of the invention, an outer sleeve is provided around the tube with balloons on the outer face thereof and is made slidable with respect to the tube. The outer sleeve and the tube are inserted into the body cavity alternately by alternately inflating the balloons on the outer sleeve and those on the tube to facilitate the insertion thereof into the body cavity.

Title
Endoscope
Application Number
5/595425
Publication Number
4040413
Application Date
July 14, 1975
Publication Date
August 9, 1977
Inventor
Susumu Ohshiro
Iwatsuki
JA
Assignee
Fuji Photo Optical
JA
IPC
A61B 1/06
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