Olympus Corporation

Kenji Takatsuji

Chikayoshi Meguro

Eijiro Sato

An endoscope includes a bending portion bendable in all directions including four directions: an up direction, a down direction, a left direction, and a right direction, a bending operation lever configured to bend the bending portion by being tilted, and a wire pulling mechanism provided integrally on the bending operation lever and including a lever tilting angle adjustment mechanism configured to set a first tilting angle at which the bending operation lever is tilted in order to bend the bending portion to at least one direction in the four directions by a predetermined bending angle and a second tilting angle at which the bending operation lever is tilted in order to bend the bending portion in a direction different from the at least one direction by a predetermined bending angle to different angles when the bending operation lever is tilted so as to bend the bending portion.

Endoscope

An endoscope includes: an endoscope operation portion; a first grasping portion configured to enable the endoscope operation portion to be grasped in a first grasping state; a second grasping portion configured to enable the endoscope operation portion to be grasped in a second grasping state; and attaching portion mounting portions to which an attaching portion of a treatment instrument operation portion is attached so as to enable an operation of the bending operation lever and an operation of a slider provided to the treatment instrument operation portion of the treatment instrument to be performed with fingers of a hand grasping the first grasping portion or the second grasping portion, the attaching portion mounting portions being formed respectively on the first grasping portion and the second grasping portion.

Endoscope and endoscope system

An endoscope includes: an insertion portion including a bending portion; an operation portion including a grasping portion and an operation portion main body; a pedestal portion protruded from the operation portion main body; a shaft member configured to be tilted; a finger contact portion on which a finger of a hand is placed, the finger contact portion being provided at an end portion of the shaft member; and a step portion on which a finger of the operator's hand, which is different from the finger placed on the finger placing portion, is placed, the step portion being provided at a position which is outside of a peripheral edge of the pedestal portion and which is an opposite side of the grasping portion across the shaft member.

In an endoscope including a rear grasping portion extending along a second longitudinal axis that is a direction flexed relative to a first longitudinal axis along which the operation portion body extends, a bend preventing portion covering a universal cable extending out from the proximal end side of the rear grasping portion is joined to the proximal end side of the rear grasping portion via a movable joint portion so that a direction of the bend preventing portion can be changed by the movable joint portion to a first direction oriented to the inner side in the flexion direction of the rear grasping portion relative to the operation portion body and a second direction oriented to the outer side in the flexion direction of the rear grasping portion relative to operation portion body.

The endoscope of the present embodiment is so configured that the forceps port connected to the insertion section can be rotated by connecting, like 'L', the front section from which the insertion section extends and the rear housing section from which the cable extends, and the curving operation lever is placed at a middle position of the L-shaped connection. Thus, the front section serving as the first grasping section and the rear housing section serving as the second grasping section can be shifted to each other as a section to be grasped, and the positions of the curving operation lever and the forceps port and the positions of the fingers match irrespective of the grasping mode, with the result that the operation can be performed comfortably.

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Tokyo, Japan

Kenji Takatsuji