Forward viewing endoscope with specific cover for photographic c

Details Forward viewing endoscope with specific cover for photographic c Forward viewing endoscope with specific cover for photographic c

1977-12-30

1980-08-26

Burr, Edgar S.

Surgery

Truss

Perineal

128 6, 354 62, 354275, A61B 104

Patent

active

042190134

ABSTRACT:
A forward viewing tape endoscope comprises a head body having a photographic optical system disposed at the forward end of the head body and a film cassette chamber provided behind the photographic optical system, an outer tube surrounding the head body and having an opening bored in the peripheral wall to effect communication between the film cassette chamber and outer tube, and a cover detachably mounted on the opening by a tightening device. The replacement of a film cassette is carried out without the insertion and withdrawal of the head body and the undesirable exposure of the photographic optical system to the atmosphere.

REFERENCES:
patent: 2665617 (1954-01-01), Marcouiller
patent: 2959089 (1960-11-01), Hett
patent: 3329074 (1967-07-01), Gosselin
patent: 3426633 (1969-02-01), Fox
patent: 3523496 (1970-08-01), Nerwin
patent: 3608547 (1971-09-01), Sato et al.
patent: 3980078 (1976-09-01), Tominaga
patent: 4085742 (1978-04-01), Okada

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