Endoscope with means for preventing an observing optical system

Details Endoscope with means for preventing an observing optical system Endoscope with means for preventing an observing optical system

1987-03-12

1988-10-25

Grieb, William H.

Surgery

Truss

Perineal

350589, A61B 106

Patent

active

047796138

ABSTRACT:
This endoscope is provided within an endoscope body having an elongate insertion part having an observing window at the tip and an operating part provided as connected to the rear end of this insertion part with an observing optical system transmitting an observed image from the tip of the above mentioned insertion part to the above mentioned operating part and is provided with a first airtightening device for making the above mentioned endoscope body airtight in the structure and a second airtightening device for making at least a part of the above mentioned observing optical system airtight in the structure or is provided within the above mentioned endoscope body with a hygroscopic member formed of a flexible sheet-shaped hygroscopic material.

REFERENCES:
patent: 2184352 (1939-12-01), Langsner
patent: 2421805 (1947-06-01), Peck
patent: 3740114 (1973-06-01), Thompson
patent: 4036218 (1977-07-01), Yamashita et al.
patent: 4341205 (1982-07-01), Hosono et al.
patent: 4538593 (1985-09-01), Ishii

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