Endoscope having optical elements that are resistant to condensa

Details Endoscope having optical elements that are resistant to condensa Endoscope having optical elements that are resistant to condensa

1987-09-22

1989-02-21

Grieb, William H.

Surgery

Truss

Perineal

350418, A61B 106

Patent

active

048055980

ABSTRACT:
An endoscope includes an insertion section, which is inserted into a body cavity of a human subject, and image transmitting means, which is located within the insertion section and is composed a plurality of lenses. A highly-viscous gel-like substance free from any water moisture is used to fill the space between adjacent associated lenses, or else is employed as a light transmitting means for conducting light, supplied from a light source, from that distal end portion onto a body cavity of the human subject.

REFERENCES:
patent: 695606 (1902-03-01), Grun
patent: 3740113 (1973-06-01), Cass
patent: 4146019 (1979-03-01), Bass et al.
patent: 4286839 (1981-09-01), Ilzig et al.
patent: 4289119 (1981-09-01), Meyer, Sr.
patent: 4370023 (1983-01-01), Lange
patent: 4615333 (1986-10-01), Taguchi
patent: 4619247 (1986-10-01), Inoue et al.

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