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WO2021255903A1 - Endoscope - Google Patents

Endoscope Download PDF

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Publication number
WO2021255903A1
WO2021255903A1 PCT/JP2020/023995 JP2020023995W WO2021255903A1 WO 2021255903 A1 WO2021255903 A1 WO 2021255903A1 JP 2020023995 W JP2020023995 W JP 2020023995W WO 2021255903 A1 WO2021255903 A1 WO 2021255903A1
Authority
WO
WIPO (PCT)
Prior art keywords
end side
channel tube
main body
endoscope
base end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/023995
Other languages
English (en)
Japanese (ja)
Inventor
洋佑 磯部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Corp filed Critical Olympus Corp
Priority to PCT/JP2020/023995 priority Critical patent/WO2021255903A1/fr
Publication of WO2021255903A1 publication Critical patent/WO2021255903A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments

Definitions

  • an endoscope has an insertion part inserted into a subject such as a patient to acquire image data in the subject by an imaging device and to perform treatment with a treatment tool or the like.
  • the insertion passage for the treatment tool through which the treatment tool is inserted is such that a resin channel tube is attached to the opening of the tip member of the endoscope insertion portion via a mouthpiece, and the channel tube is attached to the base end side of the mouthpiece.
  • the channel tube is prevented from falling off by covering it with resin or tying it with a thread.
  • Patent Document 1 a step is required in which the first region has a higher pressure-resistant crushing property than the second region formed on the proximal end side, and the first region has a higher pressure-resistant crushing property. It has a problem that it becomes difficult to connect to a pipe member.
  • the present invention has been made in view of the above, and an object of the present invention is to provide an endoscope having a simple structure and capable of preventing the sheath from being caught in the mouthpiece.
  • the endoscope according to the present invention has a distal end side and a proximal end side in the longitudinal direction of an insertion portion inserted into a subject and having a distal end member on the distal end side.
  • the channel tube through which the treatment tool is inserted and the channel tube are aligned with the proximal end side of the opening of the distal end member, the proximal end side is covered with the channel tube, and the treatment instrument is inserted together with the opening and the channel tube.
  • a mouthpiece having a through hole constituting a passage, a first main body portion arranged around the outer periphery of the mouthpiece covered with the channel tube, and a base portion protruding from the base end side of the mouthpiece in the longitudinal direction are arranged.
  • a tubular holding member having a second main body portion is provided, and the outer diameter of the channel tube extending toward the proximal end side is set on the inner circumference of the second main body portion of the holding member.
  • a protrusion is formed to press the channel tube so as to be smaller than the outer diameter of the channel tube in contact with the main body, and the base end side of the protrusion forms a tapered surface that guides the outer diameter of the channel tube to gradually expand.
  • an index indicating the mounting position with the mouthpiece is arranged on the outer surface of the holding member.
  • the holding member has a notch across the index.
  • the difference between the inner diameter of the first main body and the outer diameter of the base end side of the mouthpiece is twice the wall thickness of the channel tube in the natural state. It is as follows.
  • the mouthpiece has an abutting surface for contacting with the channel tube.
  • the maximum bending angle of the curved portion is 130 ° or more in the above invention.
  • the curved portion is configured by connecting a plurality of curved pieces, and the distance between the curved pieces arranged on the tip end side is that of the curved piece arranged on the proximal end side. Less than the interval.
  • an endoscope having a simple configuration and capable of preventing the sheath having a built-in treatment tool from being caught in the mouthpiece.
  • FIG. 1 is a diagram schematically showing an endoscope system according to an embodiment of the present invention.
  • FIG. 2 is a perspective view schematically showing the tip configuration of the insertion portion of the ultrasonic endoscope according to the embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of the ultrasonic endoscope of FIG.
  • FIG. 4 is an enlarged view of A in FIG.
  • FIG. 5 is a cross-sectional view of FIG. 4 in a state where the holding member is removed.
  • FIG. 6 is a cross-sectional view of an ultrasonic endoscope that does not correspond to the embodiment of the present invention.
  • FIG. 7 is a diagram illustrating the curvature of the curved portion of the endoscope of FIG. FIG.
  • FIG. 8 is a top view illustrating a modification 1 of the endoscope according to the embodiment of the present invention.
  • FIG. 9 is a cross-sectional view of FIG.
  • FIG. 10 is a top view of the endoscope according to the second modification of the present embodiment.
  • FIG. 11 is a top view of the endoscope according to the third modification of the present embodiment.
  • FIG. 12 is a top view of the endoscope according to the modified example 4 of the present embodiment.
  • FIG. 13 is a cross-sectional view illustrating the curvature of the endoscope according to the prior art.
  • FIG. 14 is a cross-sectional view illustrating the curvature of the endoscope according to the prior art.
  • FIG. 1 is a diagram schematically showing an endoscope system 1 according to an embodiment of the present invention.
  • the endoscope system 1 is a system for performing ultrasonic diagnosis in a subject such as a cavity of a living body using an ultrasonic endoscope.
  • the endoscope system 1 includes an ultrasonic endoscope 2, an ultrasonic observation device 3, an endoscope observation device 4, a display device 5, and a light source device 6.
  • the ultrasonic endoscope 2 converts an electrical pulse signal received from the ultrasonic observation device 3 into an ultrasonic pulse (acoustic pulse) by an ultrasonic vibrator provided at the tip thereof and irradiates the subject. At the same time, the ultrasonic echo reflected by the subject is converted into an electrical echo signal expressed by a voltage change and output.
  • the ultrasonic endoscope 2 has an imaging optical system and an imaging element, and is inserted into the digestive tract (esophagus, stomach, duodenum, large intestine) or respiratory organs (trachea, bronchus) of the subject, and is inserted into the digestive tract or the digestive tract. , It is possible to perform either respiratory imaging.
  • the ultrasonic endoscope 2 has a light guide that guides the illumination light to irradiate the subject at the time of imaging. The tip of the light guide reaches the tip of the insertion portion of the ultrasonic endoscope 2 into the subject, while the proximal end is connected to the light source device 6 that generates illumination light.
  • the ultrasonic endoscope 2 transmits ultrasonic waves to the gastrointestinal tract and organs around the respiratory organs (pancreatic duct, gallbladder, bile duct, biliary tract, lymph node, mediastinal organ, blood vessel, etc.), and the periphery thereof. Receives ultrasonic waves reflected by the organ.
  • the curved portion 212 can bend the longitudinal axis of the tip portion 211 in two different directions from each other.
  • the curved portion 212 can be curved on the XY plane shown in FIG. 1 to change the direction of the tip portion 211, and can be curved on the XY plane orthogonal to the XY plane to change the direction of the tip portion 211. Is.
  • the ultrasonic vibrator 7 is a convex type in which a plurality of piezoelectric elements are provided in an array, the piezoelectric elements involved in transmission / reception are electronically switched, and the transmission / reception of each piezoelectric element is delayed to electronically scan. It is an ultrasonic transducer of.
  • FIG. 2 is a perspective view schematically showing the tip configuration of the insertion portion of the ultrasonic endoscope according to the first embodiment.
  • the tip portion 211 includes an ultrasonic oscillator module 214 holding an ultrasonic oscillator 7, and an endoscope module 215 having an illumination lens 218 that collects illumination light and emits it to the outside.
  • the endoscope module 215 is provided in the tip member 216, forms a part of the image pickup optical system, and collects the objective lens 217, the image pickup element, and the illumination light that captures the light from the outside and emits the illumination light to the outside. It has an illumination lens 218.
  • the tip member 216 is formed with a treatment tool protrusion 219 that communicates with the treatment tool insertion passage formed in the insertion portion 21 and projects the treatment tool from the tip of the insertion portion 21.
  • the universal cord 23 is a cable extending from the operation unit 22 and having a plurality of signal cables for transmitting various signals, an optical fiber for transmitting illumination light supplied from the light source device 6, and the like.
  • the connector 24 is provided at the tip of the universal cord 23.
  • the connector 24 includes first to third connector portions 241 to 243 to which the ultrasonic cable 31, the video cable 41, and the optical fiber cable 61 are connected, respectively.
  • the ultrasonic observation device 3 is electrically connected to the ultrasonic endoscope 2 via the ultrasonic cable 31 (FIG. 1), and sends a pulse signal to the ultrasonic endoscope 2 via the ultrasonic cable 31. At the same time as outputting, an echo signal is input from the ultrasonic endoscope 2. Then, the ultrasonic observation device 3 performs a predetermined process on the echo signal to generate ultrasonic image data.
  • the display device 5 is configured by using a liquid crystal display or an organic EL (Electro Luminescence), a projector, a CRT (Cathode Ray Tube), or the like, and an ultrasonic image generated by the ultrasonic observation device 3 or an endoscopic observation device 4 Display the endoscopic image etc. generated in.
  • a liquid crystal display or an organic EL (Electro Luminescence), a projector, a CRT (Cathode Ray Tube), or the like and an ultrasonic image generated by the ultrasonic observation device 3 or an endoscopic observation device 4 Display the endoscopic image etc. generated in.
  • the light source device 6 is connected to the ultrasonic endoscope 2 via the optical fiber cable 61 (see FIG. 1), and the illumination light that illuminates the inside of the subject via the optical fiber cable 61 is the ultrasonic endoscope. Supply to 2.
  • FIG. 3 is a cross-sectional view of the ultrasonic endoscope 2 of FIG. 2 in the longitudinal axis direction
  • FIG. 4 is an enlarged view of part A of FIG.
  • the longitudinal axis referred to here is an axis along the longitudinal direction of the insertion portion 21.
  • the insertion passage for the treatment tool is composed of a through hole 220 of the tip member 216, a through hole 153 of the base 150, a through hole 154, and a through hole 171 of the channel tube 170.
  • the vicinity of the end portion connected to the treatment tool protrusion 219 is inclined with respect to the longitudinal axis of the insertion portion 21, and the treatment tool is inclined from the treatment tool protrusion 219 with respect to the longitudinal axis. It is provided so as to protrude from the surface. Further, a treatment tool entry port 224 parallel to the longitudinal axis is provided at the end portion of the through hole 220 on the base end side.
  • the tip side referred to here is the ultrasonic module 214 side of the insertion portion 21, and the base end side is the operation portion 22 side.
  • the base 150 has a first base portion 151 and a second base portion 152.
  • the first mouthpiece portion 151 is arranged on the tip end side and is fitted to the treatment tool entrance 224.
  • the through hole 153 in the first base portion 151 is inclined with respect to the longitudinal axis.
  • the second base portion 152 is arranged on the base end side and has a smaller outer diameter than the first base portion 151.
  • the through hole 154 in the second base portion 152 and the second base portion 152 is parallel to the longitudinal axis.
  • a stepped portion 152a is provided over the entire circumference on the tip end side of the second cap portion 152, that is, on the outer periphery of the first cap portion 151 side, and the end portion on the tip side of the channel tube 170 outerly placed on the second cap portion 152. Is wound and fixed to the step portion 152a with a thread 160.
  • the base end side region 152b of the second base portion 152 has a tapered shape in which the diameter of the through hole 154 is large on the base end side.
  • the first base portion 151 is fixedly bonded to the treatment tool entrance 224 with an adhesive in a state of being fixed by the screw 225.
  • the screw 225 contact surface of the first base portion 151 is provided with a recessed portion 151x that is one step recessed from the other outer peripheral surface so that the base 150 does not come off with respect to the tip member 216 when temporarily fixed by the screw 225. May be.
  • the pressing member 100 protrudes in the longitudinal axis direction from the first main body portion 101 arranged on the outer periphery of the proximal end side region 152b of the second cap portion 152 covered by the channel tube 170 and the proximal end side of the cap 150. It has a second main body portion 102 to be arranged, and has a tubular shape. On the inner circumference of the second main body 102 of the pressing member 100, the outer diameter D 2 of the channel tube 170 near the base end side of the base 150 is smaller than the outer diameter D 7 of the channel tube 170 in contact with the first main body 101. A protrusion 103 is formed (see FIG. 5).
  • the base end side of the protrusion 103 forms a tapered surface 105 that guides the outer diameter of the channel tube 170 to gradually expand.
  • the first main body portion 101 and the second main body portion 102 may be integrally molded, but the first main body portion 101 and the second main body portion 102 manufactured as separate bodies may be joined to each other. ..
  • FIG. 6 is a cross-sectional view of, for example, a conventional ultrasonic endoscope that does not correspond to the embodiment of the present invention.
  • the pressing member 100F of FIG. 6 is different from the pressing member 100 used in the present invention in that a tapered surface is not formed on the base end side of the protrusion 103.
  • the holding member 100F is used, the swelling of the channel tube 170 by the sheath 180 near the base end side of the base 150 of the channel tube 170 can be prevented, but the swelling of the channel tube 170 extending from the base end side of the holding member 100F is caused by the sheath 180. As shown in FIG.
  • the tip of the sheath 180 may be caught by the end of the holding member 100F instead of the end of the base 150.
  • the proximal end side of the protrusion 103 is the tapered surface 105, the channel tube 170 extending from the proximal end side of the pressing member 100 is pressed by the tip of the sheath 180. Even when the sheath 180 is inflated, it is possible to effectively prevent the stack in which the tip of the sheath 180 is caught in the end of the pressing member 100.
  • the inner diameter D 3 of the protrusion 103 portion of the pressing member 100 is about the same as the outer diameter D 0 of the channel tube 170.
  • the channel tube 170 is expanded even at the portion in contact with the protrusion 103 by inserting the sheath 180, and the end portion of the base 150 is expanded. Is exposed, and there is a high possibility that the tip of the sheath 170 will get stuck.
  • the inner diameter D 3 at the protrusion 103 portion is smaller than the outer diameter D 0 of the channel tube 170, the inner diameter D 4 at the portion of the channel tube 170 in contact with the protrusion 103 becomes smaller, and the insertion of the sheath 180 deteriorates.
  • the assembleability for inserting the pressing member 100 is also reduced.
  • the inner diameter D 5 of the end portion of the base end side region 152b of the base 150 is the inner diameter D 4 at the portion in contact with the protrusion 103 of the channel tube 170.
  • the inner diameter D 4 at the portion of the channel tube 170 in contact with the protrusion 103 is the original diameter of the channel tube 170 due to the relationship between the inner diameter D 3 of the protrusion 103 of the pressing member 100 and the outer diameter D 0 of the channel tube 170. Since it may be different from the inner diameter D 1 , it is preferable to set the inner diameter D 5 and the inner diameter D 4 in consideration of the relevant values.
  • an adhesive is used when fixing the channel tube 170 to the base 150, it is preferable to consider the thickness of the adhesive.
  • the inner diameter D 6 of the first main body portion 101 of the pressing member 100 is about the same as the outer diameter D 7 of the channel tube 170 covering the base end side region 152b of the base 150. If the inner diameter D 6 of the first main body 101 is larger than the outer diameter D 7 of the channel tube 170, a gap is generated between the channel tube 170 and the holding member 100, so that the holding member 100 is eccentric from the base 150. There is a risk of tilting and assembling. In such a case, the holding of the channel tube 170 by the pressing member 100 may not be successful, resulting in poor insertion of the sheath 180. Further, if the inner diameter D 6 of the first main body portion 101 is smaller than the outer diameter D 7 of the channel tube 170, it is necessary to compress the channel tube 170 when assembling the holding member 100 to the base 150, which makes assembly difficult. Become.
  • the difference between the inner diameter D 6 of the first main body portion 101 of the pressing member 100 and the outer diameter D 8 of the base end side region 152b of the base 150 is not more than twice the wall thickness t of the channel tube 170 in the natural state. Is preferable.
  • FIG. 7 is a diagram illustrating the curvature of the curved portion 212 of the ultrasonic endoscope 2 of FIG.
  • the curved portion 212 is configured by connecting a plurality of curved pieces (not shown), and is curved in the vertical and horizontal directions by operating the curved knob 221 (see FIG. 1).
  • the curved portion is configured by connecting a plurality of curved pieces having the same shape, but in the curved portion 212 of the ultrasonic endoscope 2 of the present invention, the distance between the curved pieces arranged on the tip side is the base end. Use one that is smaller than the distance between the curved pieces placed on the side. As shown in FIG.
  • the diameter of the curved portion 212 is about 15 mm, which is 13 mm.
  • the length of the curved portion 212 is about 40 mm in the conventional one, which was about 50 mm, and the maximum bending angle is 130 ° or more, and further 150 ° from the one in which the conventional one was about 90 °.
  • the ultrasonic endoscope 2 modified to the above degree has come to be used.
  • the angle formed between the adjacent curved pieces in the curved state is also significantly increased.
  • the diameter of the curved portion 212 has been reduced, and even when the bending angle is small, the tip portion of the sheath 180 is likely to be caught on the end portion of the pressing member 100.
  • the angle formed between the adjacent curved pieces in the curved state becomes smaller. It is possible to prevent the tip portion of the sheath 180 from being caught on the end portion of the pressing member 100.
  • the diameter of the curved portion 212 is reduced, the diameter of a plurality of signal cables for supplying power to the ultrasonic module 214 and the image pickup module 215 and transmitting various signals is also reduced, but the cable is less elastic due to the reduction in diameter. It may be a structure. Such a signal cable is more likely to buckle and break due to the bending operation of the bending portion 212 which is shortened and the bending angle is increased. From the viewpoint of preventing disconnection of the signal cable, it is preferable to cover the periphery of the signal cable arranged in the curved portion 212 with a heat-shrinkable tube that can be curved but is hard.
  • FIG. 8 is a top view illustrating a modification 1 of the endoscope according to the embodiment of the present invention
  • FIG. 9 is a cross-sectional view of FIG.
  • the holding member 100A according to the first modification has an index indicating the mounting position on the outer surface.
  • the pressing member 100A has a first main body portion 101A and a second main body portion 102, and the second main body portion 102A is configured to have a larger outer diameter than the first main body portion.
  • the boundary line between the first main body portion 101A and the second main body portion 102A serves as an index indicating the mounting position of the pressing member 100A.
  • the pressing member 100A has an index, that is, a notch 106 that crosses the first main body portion 101A and the second main body portion 102A. As shown in FIG. 8, the notch 106 is a notch that penetrates from the outer surface to the inner surface of the pressing member 106A.
  • the pressing member 100A is assembled to the proximal end side region 152b of the base 150 covered with the channel tube 170, the proximal end side region 152b visible through the transparent channel tube 170 from the notch 106 is confirmed, and the proximal end and the index are confirmed. Assemble the pressing member 100A so that the index is located on the tip side from the base end. This makes it possible to easily attach the holding member 100A to the base 150 at an accurate position.
  • the first main body portion 101A and the second main body portion 102A are used as indexes as different outer diameters, but the index is not limited to this.
  • a groove formed by a laser or the like or an index may be formed by printing or the like at the boundary between the first main body portion and the second main body portion formed to have the same diameter.
  • the notch 106 is preferably arranged on the UP side having the largest bending angle in order to prevent the tip portion of the sheath 180 from being caught in the notch 106.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

L'invention concerne un endoscope dans lequel un accrochage d'une gaine sur un capuchon peut être empêché par une configuration simple. Un endoscope selon la présente invention comprend : un tube de canal qui est inséré à travers un outil de traitement; un capuchon qui a son côté d'extrémité avant ajusté sur le côté d'extrémité de base d'une ouverture dans un élément d'extrémité avant d'une partie insertion, qui a le côté d'extrémité de base recouvert par le tube de canal, et qui a un trou traversant qui, conjointement avec l'ouverture et le tube de canal, constitue un canal d'insertion pour l'outil de traitement; et un élément de pression cylindrique qui comprend une première partie corps qui est disposée autour de la circonférence extérieure du capuchon qui est recouverte par le tube de canal et une seconde partie corps qui est disposée de manière à faire saillie au-delà du côté d'extrémité de base du capuchon dans une direction longitudinale. L'élément de pression a formé sur une circonférence interne de la seconde partie corps une saillie qui effectue une pression de façon à amener le diamètre externe du tube de canal s'étendant vers le côté d'extrémité de base à devenir plus petit que le diamètre externe du tube de canal qui est en contact avec la première partie corps. Le côté d'extrémité de base de la saillie est configuré pour avoir une surface effilée qui fonctionne pour guider le tube de canal de manière à augmenter progressivement le diamètre externe de celui-ci.
PCT/JP2020/023995 2020-06-18 2020-06-18 Endoscope Ceased WO2021255903A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/023995 WO2021255903A1 (fr) 2020-06-18 2020-06-18 Endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/023995 WO2021255903A1 (fr) 2020-06-18 2020-06-18 Endoscope

Publications (1)

Publication Number Publication Date
WO2021255903A1 true WO2021255903A1 (fr) 2021-12-23

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PCT/JP2020/023995 Ceased WO2021255903A1 (fr) 2020-06-18 2020-06-18 Endoscope

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163405U (fr) * 1980-05-09 1981-12-04
JPH02271817A (ja) * 1990-03-06 1990-11-06 Olympus Optical Co Ltd 内視鏡
JPH09253033A (ja) * 1996-03-25 1997-09-30 Fuji Photo Optical Co Ltd 内視鏡の処置具挿通チャンネル
JP2002209829A (ja) * 2001-01-22 2002-07-30 Fuji Photo Optical Co Ltd 内視鏡の管路接続構造
JP2006218231A (ja) * 2005-02-14 2006-08-24 Olympus Corp 内視鏡用可撓管及び内視鏡装置
JP2017086399A (ja) * 2015-11-09 2017-05-25 富士フイルム株式会社 内視鏡
JP2018117872A (ja) * 2017-01-25 2018-08-02 富士フイルム株式会社 内視鏡挿入部の先端部構造及び内視鏡
JP2018134276A (ja) * 2017-02-22 2018-08-30 富士フイルム株式会社 処置具チャンネル及び内視鏡

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163405U (fr) * 1980-05-09 1981-12-04
JPH02271817A (ja) * 1990-03-06 1990-11-06 Olympus Optical Co Ltd 内視鏡
JPH09253033A (ja) * 1996-03-25 1997-09-30 Fuji Photo Optical Co Ltd 内視鏡の処置具挿通チャンネル
JP2002209829A (ja) * 2001-01-22 2002-07-30 Fuji Photo Optical Co Ltd 内視鏡の管路接続構造
JP2006218231A (ja) * 2005-02-14 2006-08-24 Olympus Corp 内視鏡用可撓管及び内視鏡装置
JP2017086399A (ja) * 2015-11-09 2017-05-25 富士フイルム株式会社 内視鏡
JP2018117872A (ja) * 2017-01-25 2018-08-02 富士フイルム株式会社 内視鏡挿入部の先端部構造及び内視鏡
JP2018134276A (ja) * 2017-02-22 2018-08-30 富士フイルム株式会社 処置具チャンネル及び内視鏡

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