US 11,026,563 B2Granted

Endoscope and method of assembling endoscope

AssigneeFUJIFILM Corporation

InventorsTadashi Ando, Shozo Iyama

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Abstract

According to an aspect of the invention, the circumferential position of a protrusion portion of a light guide member is aligned with the position of a second groove portion of a pressing member and a tip portion of the light guide member is inserted into an insertion hole. Next, the light guide member is rotated to align the circumferential position of the protrusion portion of the light guide member with the position of a first groove portion of a mounting hole, and the tip portion of the light guide member is mounted in the mounting hole of a tip portion body. After that, a screw member is inserted into a through hole of the pressing member, is threadedly inserted into a screw hole of the tip portion body, and fixes the pressing member to a base end face of the tip portion body.

Claims10

Dependent claims

An endoscope comprising:

an insertion unit that has a longitudinal axis;
an insertion member that is disposed so as to be inserted into the insertion unit along the longitudinal axis of the insertion unit, wherein the insertion member is one of a light guide member, a tube member, or an image guide member;
a tip portion body that is provided close to a tip of the insertion unit and has a central axis parallel to the longitudinal axis of the insertion unit;
a disc-shaped pressing member that is in contact with a base end side of the tip portion body;
a protrusion portion that is provided on a tip portion of the insertion member and protrudes outward from an outer periphery of the tip portion of the insertion member in a radial direction;
at least one mounting hole which is provided in the tip portion body and in which the tip portion of the insertion member is inserted and mounted and a first groove portion having a shape corresponding to the protrusion portion is formed and is disposed at a first circumferential position in a circumferential direction around an axial direction of the insertion member;
and
an insertion hole which is provided in the disc-shaped pressing member, into which the tip portion of the insertion member is inserted, and in which a second groove portion having a shape corresponding to the protrusion portion is formed and is disposed at a second circumferential position different from the first circumferential position in the circumferential direction around the axial direction of the insertion member,
wherein the first groove portion and the second groove portion are disposed at different locations along the longitudinal axis of the insertion unit.

6 more elements

A method of assembling an endoscope, the endoscope including an insertion unit that has a longitudinal axis, an insertion member that is disposed so as to be inserted into the insertion unit along the longitudinal axis of the insertion unit, wherein the insertion member is one of a light guide member, a tube member, or an image guide member, a tip portion body that is provided close to a tip of the insertion unit, a disc-shaped pressing member that is in contact with a base end side of the tip portion body, a protrusion portion that is provided on a tip portion of the insertion member and protrudes outward from an outer periphery of the tip portion of the insertion member in a radial direction, a mounting hole which is provided in the tip portion body and in which the tip portion of the insertion member is inserted and mounted and a first groove portion having a shape corresponding to the protrusion portion is formed and is disposed at a first circumferential position in a circumferential direction around an axial direction of the insertion member, and an insertion hole which is provided in the disc-shaped pressing member, into which the tip portion of the insertion member is inserted, and in which a second groove portion having a shape corresponding to the protrusion portion is formed and is disposed at a second circumferential position different from the first circumferential position in the circumferential direction around the axial direction of the insertion member, wherein the first groove portion and the second groove portion are disposed at different locations along the longitudinal axis of the insertion unit, the method comprising:

an insertion step of inserting the tip portion of the insertion member into the insertion hole of the disc-shaped pressing member in a state in which a circumferential position of the protrusion portion and a circumferential position of the second groove portion are aligned with each other;
a mounting step of mounting the tip portion of the insertion member in the mounting hole of the tip portion body in a state in which the circumferential position of the protrusion portion and a circumferential position of the first groove portion are aligned with each other after the insertion step;
and
a fixing step of fixing the disc-shaped pressing member to the tip portion body.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/684,946Filed 24 Aug 2017
Priority: JP JP2016-16676729 Aug 2016
Published: US 2018/0055334 A11 Mar 2018
Granted: 8 Jun 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61B 1/0011
Constructional details of the endoscope body: manufacturing of endoscope parts
A61B 1/00071
Constructional details of the endoscope body: insertion part of the endoscope body
A61B 1/00112
Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g.…:…
A61B 1/018
Characterised by internal passages or accessories therefor: for receiving instruments

Family

US 2018/0055334 A1Pre-grant publication · published 1 Mar 2018
US 11,026,563 B2This patent

From the US filing history. Foreign family members aren’t listed.

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