Endoscope apparatus having valve device for supplying water and

Details Endoscope apparatus having valve device for supplying water and Endoscope apparatus having valve device for supplying water and

1995-04-12

1997-12-16

Apley, Richard J.

Surgery

Endoscope

Having auxiliary channel

600157, 137606, A61B 112

Patent

active

056978880

ABSTRACT:
An endoscope apparatus having main body and an outer unit. The main body has an insertion section. The outer unit comprises an inner tube removably mounted on the insertion section and an inner tube removably mounted on the inner tube. A first passage is provided between the inner tube and the outer circumferential surface of the insertion section, and a second passage is provided between the inner tube and the outer tube. Liquid is supplied to and drawn from the distal end of the insertion section through one of the passages. Gas is applied onto the distal end of the insertion section through the other of the passages.

REFERENCES:
patent: 3903877 (1975-09-01), Terada
patent: 4261343 (1981-04-01), Ouchi et al.
patent: 4408598 (1983-10-01), Ueda
patent: 4892112 (1990-01-01), Knetsch
patent: 5027791 (1991-07-01), Takahashi
patent: 5125910 (1992-06-01), Freitas
patent: 5313934 (1994-05-01), Wiita et al.

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