# US 2023/0404368 A1 · Endoscope

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- Number: US 2023/0404368 A1
- Document ID: US20230404368A1
- Status: Published application
- Kind: A1
- Application number: 18/459,437
- Filed: 2023-09-01
- Published: 2023-12-21
- Earliest claimed: 2021-03-03
- Assignees: FUJIFILM Corporation
- Applicants: FUJIFILM Corporation
- Inventors: Masaya INOUE
- Web page: https://patentgrep.com/patent/US20230404368A1

## CPC

- A61B 1/00087: {Tools (A61B17/00234 takes precedence)}
- A61B 1/00066: {Proximal part of endoscope body, e.g. handles (A61B1/0052 takes precedence)}
- A61B 1/00098: {Deflecting means for inserted tools}
- A61B 1/018: for receiving instruments
- A61B 1/042: {characterised by a proximal camera, e.g. a CCD camera}
- G02B 23/24: Instruments {or systems} for viewing the inside of hollow bodies, e.g. fibrescopes
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

An endoscope according to the embodiment of the present invention includes a bending operating member and an elevator operation lever that displaces an elevation angle of a treatment tool elevator for elevating a treatment tool provided in a distal end of an insertion part, the bending operating member and the elevator operation lever being attached to a body part of an operating part, in which the elevator operation lever includes a finger hook part inside which a rotational movement regulating member is provided, and by bringing the rotational movement regulating member and an outer peripheral surface of the body part of the operating part into contact with each other, rotational movement of the elevator operation lever is regulated.

## Claims

### Claim 1

An endoscope comprising:
a bending operating member and an elevator operation lever attached to a body part of an operating part, the elevator operation lever being operated to displace an elevation angle of a treatment tool elevator for elevating a treatment tool provided in a distal end of an insertion part,
wherein the elevator operation lever includes a finger hook part inside which a rotational movement regulating member is provided,
rotational movement of the elevator operation lever is regulated by bringing the rotational movement regulating member and an outer peripheral surface of the body part of the operating part into contact with each other, and
the rotational movement regulating member protrudes toward the outer peripheral surface on both sides in a width direction inside the finger hook part.

### Claim 2 (depends on 1)

The endoscope according to claim 1,
wherein a range of rotational movement of the treatment tool elevator is changed in accordance with a range of the rotational movement of the elevator operation lever.

### Claim 3 (depends on 1)

The endoscope according to claim 1,
wherein, by changing a position or a shape of the rotational movement regulating member, a range of rotational movement of the treatment tool elevator is changed.

### Claim 4 (depends on 1)

The endoscope according to claim 1,
wherein, by changing a height in a direction perpendicular to an installation surface or a width in a direction horizontal to the installation surface of the rotational movement regulating member, a range of rotational movement of the treatment tool elevator is changed.

### Claim 5 (depends on 1)

The endoscope according to claim 1,
wherein the endoscope includes a plurality of the elevator operation levers having different positions or shapes of the rotational movement regulating members, and a range of rotational movement of the treatment tool elevator is changed as the elevator operation lever is replaced.

### Claim 6 (depends on 1)

The endoscope according to claim 1,
wherein, in a state where the bending operating member and the elevator operation lever are attached to the body part of the operating part, the finger hook part is attachable and detachable, and, by replacing with the finger hook part in which a position or a shape of the rotational movement regulating member is different, a range of rotational movement of the treatment tool elevator is changed.