Suction control device for an endoscope

Details Suction control device for an endoscope Suction control device for an endoscope

1981-12-04

1984-09-04

Yasko, John D.

Surgery

Truss

Perineal

A61B 100

Patent

active

044690908

ABSTRACT:
A suction control device of an endoscope comprises an outer cylinder connected with a channel at one end and having an opening at the other end, an inner cylinder opening at either end and inserted in the outer cylinder so as to be able to move axially between a first position on one end side of the outer cylinder and a second position on the other end side of the outer cylinder, thereby forming an annular space defined between the inner cylinder and the outer cylinder, a first rugged ring formed on one end of the inner cylinder, a second rugged ring formed on the inner peripheral surface of the outer cylinder so as to come closely in contact with the first rugged ring to cut off the communication between the space and the channel when the inner cylinder is moved to the first position, and a coupling piece disposed on the other end of the outer cylinder so as to cut off the space from the atmosphere and supporting the inner cylinder so as to allow the space to communicate with the channel. A suction tube is connected with the space between the coupling piece and the first rugged ring, the outer cylinder having a communication hole for connecting the space with the atmosphere between the coupling piece and the first rugged ring.

REFERENCES:
patent: 3517669 (1970-06-01), Buono et al.
patent: 3707972 (1973-01-01), Villari et al.
patent: 3741217 (1973-06-01), Ciarico
patent: 3791379 (1974-02-01), Storz
patent: 3958566 (1976-05-01), Funhata
patent: 4198958 (1980-04-01), Utsugi
patent: 4211214 (1980-07-01), Chikashige
patent: 4261343 (1981-04-01), Ouchi et al.

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