Plug device for endoscopic instrument channel

Details Plug device for endoscopic instrument channel Plug device for endoscopic instrument channel

1997-11-26

2000-09-12

Leubecker, John P.

Surgery

Endoscope

Having auxiliary channel

A61B 100

Patent

active

061170704

ABSTRACT:
A plug device for use in an entrance passage which is provided on a manipulating head of an endoscope to guide a treating instrument like forceps into an instrument channel of the endoscope. The plug device includes a metallic outer shell, and a pressure relief member formed of a resilient material and fitted in the outer shell member, the pressure relief member having: a valve portion including a slit which is normally closed and openable on insertion of a treating instrument into the entrance passage; a pressure relief chamber; and throttle portions including apertures of different size located on the inner and outer sides of the pressure relief chamber within the entrance passage to the instrument channel of the endoscope. An auxiliary or secondary pressure relief chamber is formed between the valve member and the pressure relief member.

REFERENCES:
patent: 4240411 (1980-12-01), Hosono
patent: 4653477 (1987-03-01), Akui et al.
patent: 4809679 (1989-03-01), Shimonaka et al.
patent: 4920953 (1990-05-01), McGown
patent: 5209219 (1993-05-01), Hollobaugh

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