Side-looking type electronic endoscope which allows manipulating

Details Side-looking type electronic endoscope which allows manipulating Side-looking type electronic endoscope which allows manipulating

1992-08-25

1994-09-06

Apley, Richard J.

Surgery

Truss

Perineal

128 6, A61B 100

Patent

active

053438531

ABSTRACT:
A side-looking type endoscope which leads out a manipulating tool from the side surface of the end portion thereof. A raising table for raising a manipulating tool is provided at the end portion. An arcuate groove is formed in the raising table in such a manner that the arcuate groove has a linear bottom line and the inclination of the linear bottom line when the raising table is erect is different from the inclination of the wall of the exit passage of the manipulation tool insertion channel. An arcuate groove having a curvature radius suitable for guiding the manipulating tool which is bent when the raising table is erect is formed at a part of the arcuate groove having a linear bottom line, thereby enabling a smooth movement of the manipulating tool. If the exit passage of the manipulating tool insertion channel has an oval section having the major axis in the vertical direction, or the solid-state image sensor is disposed such that the surface of the device is perpendicular to the exit end surface of the endoscope, and the exit passage of the manipulating tool insertion channel is curved in a plane approximately parallel to the surface of device of the solid-state image sensor, it is easy to bend the manipulating tool at an even larger angle and with an even larger curvature radius.

REFERENCES:
patent: 3896793 (1975-07-01), Mitsui et al.
patent: 4407273 (1983-10-01), Ouchi
patent: 4452236 (1984-06-01), Utsugi
patent: 4593680 (1986-06-01), Kubokawa
patent: 4697576 (1987-10-01), Krauter
patent: 4706655 (1987-11-01), Krauter
patent: 4841949 (1989-06-01), Shimizu et al.
patent: 4949706 (1990-08-01), Thon

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