Endoscope having a distal end portion connected through an elongated tube to a control housing so as to be inserted into a hollow portion of a living body for the inspection thereof. The distal end portion is provided with at least a light transmitting window such as a photographing or viewing window through which the light from an object is introduced into the distal end portion so that an image of the object is formed by an objective lens therein so as to be photographed or viewed. A plastic l...

Endoscope having a bendable tube connected to a forward end member adapted to be inserted into a hollow body portion to be inspected and controlled from a control housing and an elongated flexible tube connecting the bendable tube and the control housing. The flexible tube has a thin tubular synthetic resin layer having a tubular net-like braid of non-metallic fibers embedded therein and another thin tubular synthetic resin layer having a tubular net-like braid of metallic fibers embedded therei...

An endoscope comprising a control housing and a forward end portion connected to said control housing by an elongated tube and adapted to be inserted into a hollow portion of a living body for inspection and/or photographing thereof. The endoscope comprises a flexible sheath secured at its one end to the control housing and various extension means of the endoscope to be connected to the respective various exterior devices for effecting various functions such as for illuminating the object, suppl...

Endoscope for use with an instrument such as a forceps, a stripper brush, and a washing tube inserted through a guide channel provided in the endoscope. To facilitate and insure the exact operation of the inserted instrument, the optical axis of the observation optical system of the endoscope is so positioned that the optical axis is directed to the point at which the tip of the instrument is positioned during the operation of the instrument.

One or more inflatable balloons are provided on the outer surface of the tube of an endoscope which encloses the fiber optical light transmitting bundle. When only one balloon is provided, the balloon is provided on one side of the tube near the end thereof to enlarge the space within a body cavity in one direction and the flexible part of the tube may be bent in said direction. When moe than one balloon is provided, one of the balloons is selectively inflated to enlarge the space within the bod...

An endoscope of the type in which a visual field extending from its front surface to one side surface is observable by turning a turnable portion of an image-receiving optical system mounted at the front portion of the endoscope. The endoscope is provided with a guide member which serves to hold the front end portion of a forceps, which is inserted through the endoscope, and arranged to be turnable in the same direction with the foregoing turnable portion of the optical system. At its base porti...

An endoscope comprising a single nozzle disposed near the view window provided at the distal end of said endoscope so as to wash the surface of said window and a separately provided feed line which is branched near the nozzle into a washing liquid tube and an air tube selectively used as occasion demands.

An endoscope wherein a slotted control member is rockably disposed in a port provided in the distal end section of the endoscope; the forward end portion open to the port of the channel is inclined relative to the axis of the distal end section; a tubular member, for example, forceps inserted into the channel has its tip portion so guided by the inclined forward end portion of the channel as to extend outwardly of the distal end section to one swing limit of said tip portion by being conducted t...

Two image guiding fiber bundles are disposed within an endoscope with the base end portions thereof secured together within the proximal end section of the endoscope. A common eyepiece is arranged opposite to the base end surface of the fiber bundles. One image of the interior wall of a body organ of a patient is transmitted, through a view window opened at the front end surface of the distal end section of the endoscope, to the forward end of one fiber bundle, while another image of the interio...

A suction port is opened at the outer surface of a distal end section of an endoscope and a valve member is located within the suction port. The valve member is adapted to be moved from a first position in which the suction port is fully opened, to a second position in which the suction port is restricted in its opening area. In the first position of the valve member, a body liquid or liquid substance present within the body organ of a patient is suctioned through the suction port. In the second...