# US 9,753,269 B2 · Endoscope

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- Number: US 9,753,269 B2
- Document ID: US9753269B2
- Status: Granted
- Kind: B2
- Application number: 15/418,808
- Filed: 2017-01-30
- Published: 2017-05-18
- Granted: 2017-09-05
- Earliest claimed: 2014-10-17
- Assignees: Olympus Corporation
- Applicants: Olympus Corporation
- Inventors: Takehide Kibayashi
- Web page: https://patentgrep.com/patent/US9753269B2

## CPC

- G02B 23/243: {Objectives for endoscopes}
- A61B 1/00045: {Display arrangement}
- A61B 1/00114: {Electrical cables in or with an endoscope}
- A61B 1/00188: {with focusing or zooming features}
- A61B 1/042: {characterised by a proximal camera, e.g. a CCD camera}
- A61B 1/051: {Details of CCD assembly}
- G02B 7/09: adapted for automatic focusing or varying magnification
- G02B 7/10: by relative axial movement of several lenses, e.g. of varifocal objective lens
- A61B 1/06: with illuminating arrangements
- G02B 23/2469: {using optical fibres}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An endoscope includes: an endoscope distal end rigid member; an objective optical system fixing frame; a moving frame; a wire unit including a rigid shaft portion; a wire unit connecting projection portion configured such that a flange having a diameter larger than the rigid shaft portion is screwed to a distal end face side; a first wire unit insertion hole through which a flange of the rigid shaft portion can pass in a state that screwing to the wire unit connecting projection portion is canceled; a lid member; a second wire unit insertion hole configured to be coaxial with a center axis of the first wire unit insertion hole, and through which the flange of the rigid shaft portion can pass; and a sealing member.

## Claims

### Claim 1

An endoscope comprising:
an endoscope distal end rigid member;
an objective optical system fixing frame configured to hold an optical member configuring an objective optical system arranged on a distal end side inside a through-hole formed along a longitudinal axis of the endoscope distal end rigid member;
a moving frame arranged on a holding frame freely movably forward and backward and configured to hold a moving lens such that the moving lens is moved forward and backward along an optical axis of the objective optical system;
a wire unit including an operation wire, one end portion of which is connected to an operation lever, and a rigid shaft portion configured such that another end portion of the operation wire is integrally fixed to one end face side, a diameter of the rigid shaft portion being larger than the operation wire;
a wire unit connecting projection portion provided protruding outward from an outer peripheral surface of the moving frame, and configured such that a flange provided on another end face side of the rigid shaft portion and having a diameter larger than the rigid shaft portion is screwed to a distal end face side;
a first wire unit insertion hole provided on a holding frame protrusion portion including a proximal end face to which a distal end face of the wire unit connecting projection portion protruding outward from an outer peripheral surface of the holding frame comes into contact, and configured to be a through-hole through which a flange of the rigid shaft portion can pass in a state that screwing to the wire unit connecting projection portion is canceled;
a lid member attached to the first wire unit insertion hole;
a second wire unit insertion hole formed along the longitudinal axis of the endoscope distal end rigid member, configured to be coaxial with a center axis of the first wire unit insertion hole, and configured to be a through-hole through which the flange of the rigid shaft portion can pass in the state that screwing to the wire unit connecting projection portion is canceled; and
a sealing member configured to seal the second wire unit insertion hole.

### Claim 2 (depends on 1)

The endoscope according to claim 1, wherein an inner diameter of the second wire unit insertion hole is same as or larger than an inner diameter of the first wire unit insertion hole.

### Claim 3 (depends on 1)

The endoscope according to claim 1, wherein the rigid shaft portion of the wire unit is fixed to the wire unit connecting projection portion by screwing, the lid member is fixed to the holding frame protrusion portion by screwing, and the sealing member is fixed to the endoscope distal end rigid member by screwing.

### Claim 4 (depends on 1)

The endoscope according to claim 1, wherein the lid member and the sealing member are integrally configured.

### Claim 5 (depends on 1)

The endoscope according to claim 1, wherein a distal end cover member disposed to cover a distal end face side of the endoscope distal end rigid member is provided with a third wire unit insertion hole which is a through-hole configured to be coaxial with a center axis of the second wire unit insertion hole and have a diameter same as or larger than a diameter dimension of the second wire unit insertion hole.