Structure of end portion of side-looking type electronic endosco

Details Structure of end portion of side-looking type electronic endosco Structure of end portion of side-looking type electronic endosco

1995-08-28

1996-10-29

Crow, Stephen R.

Surgery

Endoscope

With particular arrangement of internal elements

600170, 600129, A61B 100

Patent

active

055691625

ABSTRACT:
A structure of the end portion of a side-looking type electronic endoscope in which an irradiation window is disposed closer to the end than an observation window, thereby enabling a better observation of a deceased part at the time of treatment. The structure also facilitates the removal of a light guide. The observation window is disposed on the side surface of the endoscope, and a solid-state image sensor is attached to the observation window via the objective system member and the rectangular prism. A light guide is disposed in the space formed on the back side of the prism; and an irradiation window which is connected to the light guide is disposed closer to the end of the end portion than the observation window. It is therefore possible to observe the internal body as an object of inspection with the light irradiated from the portion closer to the end than the observation window. By providing a tool engaging portion which engages with a toll for removing the light guide at the end portion of the light guide, the removal of the light guide at the time of repair or replacement is facilitated.

REFERENCES:
patent: 4622954 (1986-11-01), Arakawa et al.
patent: 4779130 (1988-10-01), Yabe
patent: 4787370 (1988-11-01), Karamori
patent: 4868644 (1989-09-01), Yabe et al.
patent: 4941457 (1990-07-01), Hasegawa
patent: 5325847 (1994-07-01), Matsuno

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