Endoscope for nasal surgery

Details Endoscope for nasal surgery Endoscope for nasal surgery

1990-05-22

1991-06-04

Grieb, William H.

Surgery

Truss

Perineal

A61B 100

Patent

active

050205145

ABSTRACT:
An endoscope for nasal surgery comprises an outer shaft having a handle incorporating a switching valve for connecting a suction and flushing channel of the outer shaft to, and disconnecting it from, a source of negative pressure and a source of flushing fluid. A working insert for insertion into the outer shaft, comprises a shaft for receiving an optical system proximally connected to the working insert, a shaft having a proximally positioned connector for insertion therethrough of an auxiliary instrument, for example a pair of forceps, and two guides for wires or rods which are movable by means of handles pivoted to the proximal end part of the working insert to displace a lever on the distal end of the working insert angularly to adjust the distal end of the auxiliary instrument.

REFERENCES:
patent: 4653476 (1987-03-01), Bonnet
patent: 4706655 (1987-11-01), Krauter
patent: 4750475 (1988-06-01), Yoshihashi
patent: 4756303 (1988-07-01), Kawashima et al.
patent: 4771766 (1988-09-01), Aoshiro et al.
patent: 4881523 (1989-11-01), Heckele

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