公开(公告)号：US20220287585A1

公开(公告)日：2022-09-15

申请号：US17765678

申请日：2020-09-30

Applicant: HOYA CORPORATION

Inventor： Tetsu HIRAYAMA

IPC: A61B5/06 ,  A61B8/12

Abstract: Pliability of a tube is ensured while preventing deformation of the tube, occurrence of air leakage, and the like. An endoscope includes an insertion portion and a tube arranged inside the insertion portion. The insertion portion includes a bending section that is bendable based on an operation, a distal tip connected to a distal tip of the bending section, and a flexible tube portion that is bendable by external force independent of the operation. The tube includes an inner layer and an outer layer formed outside the inner layer. The inner layer is formed from polytetrafluoroethylene having solid structure. The outer layer is positioned at an end portion on a side of the distal tip and includes a first portion formed from polytetrafluoroethylene having solid structure and a second portion formed from polytetrafluoroethylene having porous structure.

公开(公告)号：US20220369896A1

公开(公告)日：2022-11-24

申请号：US17767214

申请日：2020-09-30

Applicant: HOYA CORPORATION

Inventor： Tetsu HIRAYAMA

IPC: A61B1/005 ,  A61B1/018

Abstract: Provided is an endoscope capable of effectively suppressing breakage of a channel while sufficiently exhibiting performance of a plurality of portions having different degrees of bending. The endoscope includes an insertion portion and a channel arranged inside the insertion portion. The insertion portion includes a bending section that is bendable based on an operation, and a flexible tube portion that is bendable by an external force unrelated to the operation. The channel includes an inner layer and an outer layer formed outside the inner layer, the inner layer is made of polytetrafluoroethylene having a solid structure, and the outer layer is made of polytetrafluoroethylene having a porous structure. A porosity of the outer layer in the bending section is smaller than a porosity of the outer layer in the flexible tube portion.

公开(公告)号：US20180325358A1

公开(公告)日：2018-11-15

申请号：US15775227

申请日：2016-11-07

Applicant: HOYA CORPORATION

Inventor： Tetsu HIRAYAMA

IPC: A61B1/00 ,  A61B1/015

CPC classification number: A61B1/00066 ,  A61B1/00 ,  A61B1/00091 ,  A61B1/015 ,  A61B2017/00393 ,  A61B2017/00415 ,  G02B23/24

Abstract: In a multistage pushbutton switch device, n pushbutton switches and at least one load absorption spring are movably arranged in between a pushbutton member and a reaction force wall in the same axial line, each of the n pushbutton switches is composed of an electrical switch member and a pressing member that operates the electrical switch member, and (n−1) that is one less than n, or more pushbutton switches is arranged with an intermediate spring member, when the pushbutton member is pressed and displaced, the n electrical switch members are sequentially turned on, the load absorption spring is arranged in at least one of between the pushbutton member and the pushbutton switch that is the nearest to the pushbutton member, between pushbutton switches that are adjacent, and between the reaction force wall and the pushbutton switch that is the nearest to the reaction force wall.

公开(公告)号：US20220395165A1

公开(公告)日：2022-12-15

申请号：US17776676

申请日：2020-11-18

Applicant: HOYA CORPORATION

Inventor： Tetsu HIRAYAMA ,  Takahiro KOBAYASHI ,  Naoyuki NAITO

IPC: A61B1/012 ,  G02B23/24

Abstract: The endoscope includes an insertion portion, a hand-operating unit, a first treatment-instrument conduit, and a second treatment-instrument conduit. One end of the insertion portion is coupled to the hand-operating unit. The first treatment-instrument conduit passes through insides of the insertion portion and the hand-operating unit. A treatment instrument is inserted into the first treatment-instrument conduit from an upper end of the hand-operating unit. The second treatment-instrument conduit passes through insides of the insertion portion and the hand-operating unit and includes a branching portion that branches off into a first branching path and a second branching path at the hand-operating unit, a treatment instrument is inserted into the second treatment-instrument conduit from the first branching path. The first treatment-instrument conduit includes a first part having a first hardness at least at a grip portion in the hand-operating unit and a second part having a second hardness smaller than the first hardness.

公开(公告)号：US20200221935A1

公开(公告)日：2020-07-16

申请号：US16649859

申请日：2018-10-05

Applicant: ENDOMASTER PTE LTD. ,  HOYA CORPORATION

Inventor： Tomonori YAMAMOTO ,  Boon Hang NG ,  Isaac David PENNY ,  Naoyuki NAITO ,  Takahiro KOBAYASHI ,  Tetsu HIRAYAMA

IPC: A61B1/00 ,  A61B1/018 ,  A61B1/015

Abstract: An endoscope system is provided. The system comprises an endoscope having a hollow tube formed therein; and an instrument for insertion through the hollow tube, wherein the instrument has a first end for operational control and a second distal end for instrument operation at a distal end of the endoscope, wherein the distal end of the endoscope has an illumination device and a vision device for providing illuminated vision at the distal end of the endoscope for operational control of the instrument operation at the distal end of the instrument, and wherein the distal end of the instrument and the distal end of the endoscope are interoperably coupled for rotational control of the instrument with respect to the endoscope.