Endoscope

Details Endoscope Endoscope

1989-02-02

1989-11-21

Grieb, William H.

Surgery

Truss

Perineal

A61B 112

Patent

active

048815233

ABSTRACT:
An endoscope for endonasal surgery in particular, comprises a suction and flushing shaft accommodating an optical system and having a suction channel and a flushing channel. A switching valve is accommodated in a handle of the endoscope, for connecting the suction channel and the flushing channel to a suction source and to a flushing fluid source, respectively. The switching valve allows the suction channel to be flushed clear of bodily tissue or secretions, for example, during use of the endoscope within a bodily cavity. To this end, the switching valve is such that the suction channel can be cleansed by flushing fluid in an intermediate position of the switching valve, whilst the suction channel is shut off from the suction source.

REFERENCES:
patent: 4261343 (1981-04-01), Ouchi et al.
patent: 4517962 (1985-05-01), Heckele
patent: 4537209 (1985-08-01), Sasa
patent: 4694821 (1987-09-01), Kondo

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