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Title:
ENDOSCOPE
Document Type and Number:
Japanese Patent JPS63277027
Kind Code:
A
Abstract:

PURPOSE: To prevent the damage of a flexible tube due to the generation of the pressure difference between the inside and outside of an endoscope at the time of sterilization, by providing a means for changing over the opening and closing of the air passing route with the inside and outside of the endoscope through operation to either one of the insert part, main body part and eyepiece part of the endoscope.

CONSTITUTION: When a rigid endoscope is sterilized using ethylene oxide gas, a rotary body 17 is rotated to be moved from the state shown by a solid line to the state shown by a dotted line. Whereupon, the inclined surface 18 at the leading end of the rotary body 17 is slightly separated from an O-ring 21 and, therefore, the interior of a main body 2 communicates with the open air through the formed gap and a porous membrane 15. As a result, since the inside and outside of the main body part 2 can be brought to the same pressure, it can be prevented that the first and second tubes 11, 12 constituting a flexible tube 6 are stretched and damaged.


Inventors:
SHIGA AKIRA
Application Number:
JP11210687A
Publication Date:
November 15, 1988
Filing Date:
May 08, 1987
Export Citation:
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Assignee:
OLYMPUS OPTICAL CO
International Classes:
G02B23/24; A61B1/00; (IPC1-7): A61B1/00; G02B23/24
Attorney, Agent or Firm:
Atsushi Tsuboi



 
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