WO2020071378A1 - Treatment instrument for endoscope, assistive instrument for endoscope, and endoscope - Google Patents

Treatment instrument for endoscope, assistive instrument for endoscope, and endoscope

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Publication number
WO2020071378A1
WO2020071378A1 PCT/JP2019/038779 JP2019038779W WO2020071378A1 WO 2020071378 A1 WO2020071378 A1 WO 2020071378A1 JP 2019038779 W JP2019038779 W JP 2019038779W WO 2020071378 A1 WO2020071378 A1 WO 2020071378A1
Authority
WO
WIPO (PCT)
Prior art keywords
endoscope
treatment instrument
treatment
flange portion
flange
Prior art date
Application number
PCT/JP2019/038779
Other languages
French (fr)
Japanese (ja)
Inventor
佳弘 上田
Original Assignee
富士フイルム株式会社
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 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2020550461A priority Critical patent/JP7098744B2/en
Publication of WO2020071378A1 publication Critical patent/WO2020071378A1/en

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    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes

Definitions

  • the present invention relates to a treatment tool for an endoscope, an auxiliary tool for an endoscope, and an endoscope.
  • the endoscope treatment tool inserted into the treatment instrument insertion channel of the flexible endoscope is a treatment tool operated by an assistant different from the endoscope operator, and a treatment operated by the endoscope operator. It is roughly divided into ingredients.
  • An example of a treatment tool operated by an endoscope operator is a puncture needle device used in an ultrasonic endoscopic puncture suction (EUS-FNA).
  • EUS-FNA is a technique of observing the thorax and abdomen from the digestive tract such as the stomach and duodenum with an ultrasonic endoscope, and puncturing a needle from the digestive tract to collect a tissue sample.
  • the endoscope operation unit When a treatment tool operated by an endoscope operator is used, the endoscope operation unit is gripped and operated by one hand of the endoscope operator, and the treatment tool operation unit is operated by the endoscope operator. It is grasped and operated by the other hand.
  • the treatment instrument operation section is fixed to the endoscope operation section, and the treatment instrument operation section is stably provided via the endoscope operation section held by one hand of the endoscope operator. Supported.
  • the operator of the endoscope can use the other hand exclusively for operating the treatment tool operation unit.
  • the puncture needle device for an ultrasonic endoscope described in Patent Literature 1 has a cylindrical connection portion into which a base of an ultrasonic endoscope having a non-circular flange portion is inserted, and is inserted into the cylindrical connection portion. And a lock member for retaining the base.
  • the cylindrical connecting portion has an insertion restricting portion that comes into contact with the base inserted to a predetermined position, and a non-circular flange receiving hole into which the non-circular flange is fitted so as to be relatively non-rotatable.
  • the lock member is slid in a direction intersecting with the insertion / removal direction of the base in a state where the base is in contact with the insertion restricting portion and the flange is fitted into the flange receiving hole. As a result, the locking member engages with the flange, and the base is prevented from coming off.
  • the endoscope adapter described in Patent Literature 2 connects an endoscope and a treatment tool for an endoscope that is inserted into a conduit of the endoscope.
  • the treatment tool for an endoscope has a treatment tool fixing base that is disposed on the same axis and is detachable.
  • the endoscope adapter is fixed to the endoscope conduit base, and then the endoscope treatment tool is fixed to the endoscope adapter treatment tool fixing base, so that the endoscope treatment tool is fixed. Fixed to the endoscope.
  • JP 2010-269126 A Japanese Patent Application Laid-Open No. 2010-94367
  • the present invention has been made in view of the above-described circumstances, and enables a treatment tool for an endoscope and an auxiliary tool for an endoscope to be securely attached to an endoscope operation unit with a simple configuration and to be easily detachable.
  • the purpose is to do.
  • the treatment tool for an endoscope is provided at an entrance portion of the treatment tool insertion channel in the endoscope operation unit, and is formed in a non-circular shape when viewed in the axial direction of the treatment tool insertion channel.
  • a treatment tool operation portion that can be fixed to a mouthpiece having a flange portion, wherein the treatment tool operation portion has the same shape as the flange portion, and an opening through which the flange portion can be inserted;
  • the treatment tool operation unit is rotated about the central axis of the treatment tool insertion channel with respect to the endoscope operation unit in a state of passing through the opening, and an engagement unit that engages with the flange unit,
  • a contact portion that contacts a seat surface around the base in the endoscope operation portion in a state where the engagement portion is engaged with the flange portion.
  • the endoscope auxiliary tool is provided at an entrance of the treatment tool insertion channel of the endoscope operation unit, and has a non-circular shape when viewed in the axial direction of the treatment tool insertion channel.
  • a first end portion that can be fixed to a base having a first flange portion formed on the end portion, and a second flange portion that is the same as the first flange portion, and the treatment tool operation portion of the treatment tool for an endoscope. Connects the first end portion and the second end portion that can be fixed, and inserts a treatment instrument flexible portion extending from the treatment instrument operation portion fixed to the second end portion.
  • a rigid tube portion wherein the first end portion has the same shape as the first flange portion and an opening through which the flange portion can be inserted, and the flange portion has passed through the opening portion.
  • the first end is located at the center of the treatment instrument insertion channel with respect to the endoscope operation section.
  • the base having the flange portion formed in a non-circular shape when viewed in the axial direction of the treatment tool insertion channel is provided at the entrance of the treatment tool insertion channel in the endoscope operation unit.
  • the treatment instrument operating section of the treatment instrument for the endoscope or the first end of the auxiliary tool for the endoscope can be fixed to the base.
  • the treatment tool for the endoscope and the auxiliary tool for the endoscope can be firmly attached to the endoscope operation section and easily detachable with a simple configuration.
  • FIG. 1 is a perspective view of an example of an endoscope for describing an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an example of an endoscope system including the endoscope of FIG. 1. It is an exploded perspective view of an example of an endoscope treatment tool for explaining an embodiment of the present invention.
  • FIG. 4 is a perspective view showing how to use the endoscope treatment tool of FIG. 3.
  • FIG. 2 is a perspective view of an example of a base of the endoscope in FIG. 1. It is a top view of the base of FIG.
  • FIG. 4 is a plan view of a fixing portion of the endoscope treatment tool of FIG. 3 with respect to a base.
  • FIG. 8 is a sectional view taken along line VIII-VIII of the fixed portion in FIG. 7.
  • FIG. 9 is a sectional view taken along line IX-IX of the fixed portion in FIG. 7. It is a schematic diagram of a modification of the fixed part of FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of an example of the auxiliary tool for endoscopes for describing embodiment of this invention. It is a top view of the 1st end part of the auxiliary tool for endoscopes of FIG. It is a perspective view of the 2nd end part of the auxiliary tool for endoscopes of FIG.
  • FIG. 13 is a schematic view of a modification of the endoscope aid of FIG. 11.
  • FIG. 1 shows an example of an endoscope for describing an embodiment of the present invention
  • FIG. 2 shows an example of an endoscope system including the endoscope of FIG.
  • the endoscope system 1 includes an endoscope 2, a light source device 3, a processor unit 4, and a suction pump 5.
  • the endoscope 2 is a flexible endoscope, and includes an insertion section 10 inserted into the subject, an endoscope operation section 11 connected to the insertion section 10, and a universal cord 12 extending from the endoscope operation section 11. At the end of the universal cord 12, a connector 13 connected to the light source device 3 is provided.
  • the insertion section 10 includes a distal end portion 14, a bending portion 15 connected to the distal end portion 14, and a flexible portion 16 connecting the bending portion 15 and the endoscope operation portion 11.
  • An imaging unit 17 including an imaging device such as a CCD (Charge Coupled Device) image sensor and a CMOS (Complementary Metal Oxide Semiconductor) image sensor is mounted on the distal end portion 14.
  • an ultrasonic transducer for transmitting and receiving ultrasonic waves is mounted on the distal end portion 14 in place of or in addition to the imaging unit 17. Is done.
  • the bending section 15 is configured to be bendable, and the bending of the bending section 15 is operated by the endoscope operation section 11. Further, the flexible portion 16 is configured to be flexible enough to be deformable following the shape of the insertion path in the subject.
  • the endoscope operation unit 11 includes an operation button 18A for operating suction using the suction pump 5, an operation knob 18B for operating the bending of the bending unit 15, an operation button 18C for operating imaging using the imaging unit 17, and the like. Is provided.
  • the endoscope operation section 11 is provided with an entrance portion 24 of a treatment instrument insertion channel 23 through which the treatment instrument is inserted.
  • a light guide 20 and an electric cable 21 are provided inside the insertion section 10, the endoscope operation section 11, and the universal cord 12.
  • the light guide 20 guides the illumination light generated by the light source device 3 to the distal end portion 14.
  • the electric cable 21 transmits the operating power of the imaging unit 17, a control signal, and a captured image signal between the imaging unit 17 and the processor unit 4.
  • the processor unit 4 generates captured image data from the input captured image signal, displays the generated captured image data on the monitor 6, and records the data.
  • a plurality of operation wires 22 and a treatment tool insertion channel 23 are provided inside the insertion section 10 and the endoscope operation section 11.
  • the operation wire 22 reaches the distal end portion 14 of the insertion portion 10 from the endoscope operation portion 11, and is pushed out toward the distal end portion 14 in response to operation of the operation knob 18B of the endoscope operation portion 11, or the endoscope is operated. It is pulled to the mirror operation unit 11 side.
  • the bending section 15 of the insertion section 10 is bent in accordance with the pushing and pulling of the operation wire 22.
  • the treatment tool insertion channel 23 extends from the entrance portion 24 provided in the endoscope operation section 11 to the distal end portion 14 of the insertion portion 10, and the exit portion 25 of the treatment instrument insertion channel 23 has a distal end surface of the distal end portion 14. It is open to.
  • the endoscope operation unit 11 is provided with a base 30 that forms an opening of the entrance portion 24 of the treatment tool insertion channel 23.
  • the endoscope treatment tool inserted into the treatment tool insertion channel 23 is a base 30. Can be fixed to
  • the treatment instrument insertion channel 23 joins the suction tube 26 in the endoscope operation section 11.
  • the suction pipe 26 extends to the connector 13 via a valve 27 opened and closed by the operation button 18A, and is connected to the suction pump 5 via a connection tube 29 connected to a base 28 provided on the connector 13. .
  • a fluid such as blood is sucked into the suction pump 5 from the opening of the outlet 25 of the treatment instrument insertion channel 23 through the suction tube 26.
  • FIGS. 3 and 4 show an example of an endoscope treatment tool for describing an embodiment of the present invention.
  • An endoscope treatment tool 100 shown in FIGS. 3 and 4 is a puncture needle device, and includes a puncture needle 101 having a soft shaft portion 110 and a puncture portion 111 continuously provided at the tip of the shaft portion 110, and a puncture needle.
  • the treatment apparatus includes a soft sheath 102 through which the needle 101 is inserted, and a treatment instrument operation unit 103 for operating the puncture needle 101.
  • the treatment tool 100 for the endoscope is not limited to the puncture needle device, and may be a high-frequency scissor forceps, a high-frequency knife, a bipolar hemostat, a clip, a collection net, or the like.
  • the treatment instrument operation unit 103 has a main body 112 and a handle 113 that is slid with respect to the main body 112.
  • the main body 112 guides the puncture needle 101 toward the sheath 102 extending from the distal end 114 of the main body 112.
  • the handle 113 detachably holds the puncture needle 101 inserted into the sheath 102.
  • the sheath 102 is inserted into the treatment instrument insertion channel 23 through the opening of the entrance portion 24 of the treatment instrument insertion channel 23.
  • the distal end of the sheath 102 inserted into the treatment instrument insertion channel 23 is disposed so as to protrude from the distal end 14 of the endoscope 2 through the opening of the outlet portion 25 of the treatment instrument insertion channel 23.
  • a sheath of the endoscope treatment tool 100 is operated by an endoscope operator.
  • the tip of 102 is arranged at a position facing the examination site of the subject.
  • the handle 113 is pushed by the endoscope operator.
  • the puncture portion 111 of the puncture needle 101 projects from the distal end of the sheath 102 and pierces the test site of the subject, and a tissue sample of the test site is collected.
  • the treatment instrument operation section 103 is fixed to the base 30 of the endoscope operation section 11.
  • the endoscope operator can use the hand opposite to the one hand holding the endoscope operation unit 11 exclusively for operating the treatment instrument operation unit 103.
  • FIGS. 5 and 6 show the base 30 of the endoscope operation unit 11.
  • the base 30 has a cylindrical portion 31 and a flange portion 32 provided to protrude radially from the outer peripheral surface of the cylindrical portion 31.
  • the tube portion 31 is provided so as to protrude from the endoscope operation portion 11, and a flat seat surface 33 is formed around the tube portion 31 in the endoscope operation portion 11.
  • the tubular portion 31 communicates with the treatment instrument insertion channel 23, and the flange portion 32 is formed in a non-circular shape when viewed in the axial direction of the treatment instrument insertion channel 23.
  • the flange portion 32 is formed in a non-circular shape obtained by cutting off a pair of arcs located on opposite sides of the center of the circle. May be square, rectangular, or elliptical.
  • FIGS. 7 to 9 show a fixing portion of the treatment tool operation section 103 to the base 30.
  • the treatment instrument operation unit 103 is fixed to the base 30 by the distal end 114 of the main body 112.
  • the distal end 114 of the main body 112 is formed in an annular shape surrounding the periphery of the sheath 102, and the base 30 is inserted between the outer peripheral surface of the sheath 102 and the inner peripheral surface of the distal end 114.
  • the tip 114 has an opening 120, an engaging part 121, and a contact part 122.
  • the opening 120 is provided inside the distal end 114.
  • the opening 120 is formed in the same shape as the flange 32 of the base 30. In the example shown in FIGS. 7 and 8, a pair of arcs located on opposite sides of the center of the circle are cut off. It is formed in a non-circular shape. And the opening part 120 is formed slightly larger than the flange part 32, and the flange part 32 can be penetrated as shown in FIG.
  • the engaging portion 121 is provided so as to protrude radially from the inner peripheral surface of the distal end portion 114, and is formed in a shape excluding the opening portion 120 from a circle including the opening portion 120, and surrounds the outer periphery of the opening portion 120. In. When the treatment instrument operation unit 103 is rotated about the center axis of the base 30 with respect to the endoscope operation unit 11 in a state where the flange portion 32 has passed through the opening portion 120, as shown in FIG. 121 engages with the flange portion 32.
  • the contact portion 122 forms the distal end surface of the distal end portion 114.
  • the contact portion 122 contacts the seat surface 33 of the endoscope operation portion 11.
  • a fixed portion including the engaging portion 121 and the contact portion 122 is sandwiched between the flange portion 32 and the seat surface 33, whereby the treatment instrument operation portion 103 is fixed to the base 30.
  • the engaging portion 121 and the abutting portion 122 are immovable with respect to the distal end portion 114 and have a simple configuration. Further, the strength of the engaging portion 121 and the abutting portion 122 that are immovable with respect to the distal end portion 114 can be more easily increased than that of the movable portion. Therefore, the treatment instrument operation unit 103 can be firmly attached to the endoscope operation unit 11. Then, the treatment instrument operation section 103 can be easily attached to and detached from the endoscope operation section 11 simply by rotating the treatment instrument operation section 103.
  • the contact portion 122 is made of an elastic material, and the contact portion 122 and the seat surface 33 are in close contact with each other with the elastic compression of the contact portion 122.
  • an elastic member may be provided on the seat surface 33, and in this case also, the strength of fixing the treatment instrument operation unit 103 to the base 30 and the airtightness can be increased.
  • a seal point SP indicated by a two-dot chain line (between the outer peripheral surface of the circular flange portion 35 of the base 30 and the inner peripheral surface of the distal end portion 114 and the outer peripheral surface of the circular flange portion 36 of the base 30.
  • An airtight elastic member may be arranged between the inner peripheral surface of the distal end portion 114 and between the distal end portion of the base 30 and the bottom of the distal end portion 114).
  • the treatment instrument operation section 103 may have a lock section for preventing the treatment instrument operation section 103 from rotating with respect to the endoscope operation section 11 in a state where the engagement section 121 is engaged with the flange section 32 of the base 30.
  • the lock portion 130 shown in FIG. 10 includes a lock bar 131 that engages with the long side portion 34 corresponding to the chord of the cut-off arc in the non-circular flange portion 32 formed by cutting off a pair of arcs. , And a spring 132 for urging the lock bar 131.
  • the lock bar 131 has a lock release operation section 133 so that the operator of the endoscope can arbitrarily release the lock.
  • the lock bar 131 is not limited to the engagement with the long side portion 34 of the flange portion 32.
  • a notch or a hole is separately provided in the flange portion 32 or another portion of the base 30, and the lock bar 131 engages with the notch or the hole. May be combined.
  • the lock portion may be configured by a screw that penetrates the distal end portion 114 in the radial direction and contacts the base 30 inserted into the distal end portion 114. In any of the configurations, the endoscope operator can arbitrarily switch between fixing and non-fixing in the rotation direction.
  • FIGS. 11 to 13 show an example of an endoscope assisting tool for describing an embodiment of the present invention.
  • the endoscope auxiliary tool 200 shown in FIG. 11 is installed between the endoscope operation section 11 and the treatment instrument operation section 103, and protrudes from the distal end portion 14 of the endoscope 2 through the treatment instrument insertion channel 23.
  • the protrusion amount of the sheath 102 of the endoscopic treatment tool 100 is adjusted.
  • the endoscope auxiliary tool 200 includes a first end 201 that can be fixed to the base 30 of the endoscope operation section 11, a second end 202 that can fix the treatment instrument operation section 103, and a first end 201. And a cylindrical portion 203 connecting the second end portion 202 and the second end portion 202.
  • the tubular portion 203 is hard, and can penetrate the sheath 102 extending from the distal end portion 114 of the treatment instrument operation portion 103.
  • the first end 201 has the same configuration as the distal end 114 of the treatment instrument operation unit 103, and has an opening 220, an engaging part 221, and a contact part 222 as shown in FIG. 12.
  • the opening 220 is provided inside the annular first end 201.
  • the opening 220 is formed in the same shape as the flange 32 of the base 30 of the endoscope operation unit 11 and is formed slightly larger than the flange 32 so that the flange 32 can be inserted.
  • the engagement portion 221 is provided so as to protrude in the radial direction from the inner peripheral surface of the annular first end 201, and surrounds the outer periphery of the opening 220.
  • the second end 202 is configured similarly to the base 30 of the endoscope operation unit 11, and has a cylindrical portion 231, a flange 232, and a seat surface 233 as shown in FIG.
  • the flange portion 232 is the same as the flange portion 32 of the base 30, and can be inserted into the opening 120 of the distal end portion 114 of the treatment instrument operation unit 103.
  • the engaging section 121 of the distal end portion 114 of the treatment instrument operation section 103 is turned into the flange section 232. Engage with.
  • the contact portion 122 of the distal end portion 114 of the treatment instrument operating portion 103 is in contact with the seating surface 233 of the second end portion 202.
  • a fixed portion including the engaging portion 121 and the contact portion 122 is sandwiched between the flange portion 232 and the seat surface 233, whereby the treatment instrument operating portion 103 is fixed to the second end 202.
  • the sheath 102 of the treatment tool 100 for an endoscope that is arranged to protrude from the distal end portion 14 of the endoscope 2 becomes excessive.
  • the surplus length of the sheath 102 is such that the treatment instrument operation unit 103 is separated from the endoscope operation unit 11 and is disposed between the endoscope operation unit 11 and the treatment instrument operation unit 103.
  • the sheath 102 disposed between the endoscope operation section 11 and the treatment instrument operation section 103 bends, so that the treatment instrument operation section 103 hangs down. For this reason, the treatment tool operation unit 103 requires the support of the endoscope operator.
  • the endoscope assisting device 200 the surplus length of the sheath 102 is stored in the rigid cylindrical portion 203, and the treatment instrument operation unit 103 performs endoscope through the endoscope assisting device 200. It is fixed to the mirror operation unit 11.
  • the endoscope operator can use the hand opposite to the one hand holding the endoscope operation unit 11 exclusively for operating the treatment instrument operation unit 103.
  • the contact portion 222 of the first end 201 may be made of an elastic material.
  • the contact portion 222 and the seat surface 33 come into tight contact with each other with the elastic compression of the contact portion 222, and the fixing strength of the first end 201 to the base 30 is increased.
  • the first end 201 may have a lock portion that prevents the rotation of the first end 201 with respect to the endoscope operating portion 11 in a state where the engaging portion 221 is engaged with the flange portion 32 of the base 30. Good.
  • the lock portion of the first end 201 can be configured similarly to the lock portion 130 shown in FIG.
  • FIG. 14 shows a modified example of the endoscope auxiliary tool 200, in which a tubular portion 203 is connected to a first tubular member 210 connected to a first end 201 and a second tubular member 210 connected to a second end 202. And two tubular members 211.
  • the second cylindrical member 211 is fitted to the first cylindrical member 210 so as to be able to advance and retreat in the axial direction of the cylindrical portion 203 with respect to the first cylindrical member 210.
  • the length of the cylindrical portion 203 is made variable by the reciprocating movement of the second cylindrical member 211, and the amount of protrusion of the sheath 102 of the treatment tool 100 for the endoscope that is arranged to protrude from the distal end portion 14 of the endoscope 2 is variously changed.
  • the second tubular member 211 is rotatable around the central axis of the tubular portion 203 with respect to the first tubular member 210.
  • the rotation of the second cylindrical member 211 allows the treatment instrument operation unit 103 fixed to the second end 202 to rotate, thereby improving the operability of the endoscope treatment instrument 100.
  • Appropriate friction acts between the first cylinder member 210 and the second cylinder member 211 fitted to each other, and the friction causes the position of the first cylinder member 210 and the second cylinder member 211 to be changed. Since the relationship is maintained, there is no need for endoscope operator support.
  • the treatment tool for an endoscope disclosed in the present specification is provided at the entrance of the treatment tool insertion channel in the endoscope operation unit, and is viewed in the axial direction of the treatment tool insertion channel.
  • a treatment tool operation portion that can be fixed to a base having a flange portion formed in a non-circular shape, wherein the treatment tool operation portion has the same shape as the flange portion and an opening through which the flange portion can be inserted.
  • the distal end of the contact portion is made of an elastic material.
  • the treatment tool for an endoscope disclosed in the present specification may be configured such that the treatment instrument operation section is configured such that the engagement section is engaged with the flange section, and the endoscope operation section of the treatment instrument operation section. And a lock portion for preventing rotation about the central axis with respect to.
  • the endoscope auxiliary tool disclosed in the present specification is provided at the entrance of the treatment tool insertion channel of the endoscope operation unit, and is non-circular when viewed in the axial direction of the treatment tool insertion channel.
  • a first end portion that can be fixed to a base having a first flange portion formed in a shape, and a second flange portion that is the same as the first flange portion, wherein the treatment tool operation of the treatment tool for an endoscope is performed.
  • the treatment tool insertion chamber is inserted into the endoscope operation portion.
  • the engagement portion engages with the first flange portion by being rotated about the central axis of the flannel, and the engagement portion engages with the first flange portion, and the endoscope operation portion is engaged with the engagement portion.
  • the tip of the contact portion is made of an elastic material.
  • the endoscope assisting tool disclosed in the present specification may be configured such that the first end portion is the endoscope operation portion of the first end portion in a state where the engagement portion is engaged with the flange portion. And a lock portion for preventing rotation about the central axis with respect to.
  • the tubular portion has a first tubular member connected to the first end, and a second tubular member connected to the second end.
  • the second cylindrical member is rotatable around the central axis of the cylindrical portion with respect to the first cylindrical member.
  • the endoscope disclosed in the present specification has a base having a flange portion formed in a non-circular shape when viewed in the axial direction of the treatment instrument insertion channel, the treatment instrument insertion channel in the endoscope operation section.
  • the end portion of the treatment tool for the endoscope or the first end of the auxiliary tool for the endoscope can be fixed to the base.

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  • General Physics & Mathematics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

An objective of the present invention is to facilitate, by a simple configuration, firmly attaching a treatment instrument for endoscope and assistive instrument for endoscope to an endoscope operation part, and easily attaching same to and detaching same from the endoscope operation part. Provided is a treatment instrument for endoscope (100) comprising a treatment instrument operation part (103) which can be anchored in a base (30) disposed in an entry portion (24) of a treatment instrument insertion channel (23) in an endoscope operation part (11) and comprising a flange part (32) formed in a non-circular shape when seen in the axial direction of the treatment instrument insertion channel. The treatment instrument operation part (103) comprises: an opening part (120) which has the same shape as the flange part (32) and through which the flange part (32) can be inserted; an engagement part (121) which engages with the flange part (32) by the treatment instrument operation part (103) being rotated about the central axis of the treatment instrument insertion channel (23) in relation to the endoscope operation part (11) in a state in which the flange part (32) is passed through the opening part (120); and a contact part (122) which makes contact with a seat (33) in the circumference of the base (30) of the endoscope operation part (11) when the engagement part (121) is engaged with the flange part (32).

Description

内視鏡用処置具、内視鏡用補助具及び内視鏡Endoscope treatment tools, endoscope aids, and endoscopes
　本発明は、内視鏡用処置具、内視鏡用補助具及び内視鏡に関する。 The present invention relates to a treatment tool for an endoscope, an auxiliary tool for an endoscope, and an endoscope.
　軟性内視鏡の処置具挿通チャンネルに挿通される内視鏡用処置具は、内視鏡操作者とは別の介助者によって操作される処置具と、内視鏡操作者によって操作される処置具とに大別される。内視鏡操作者によって操作される処置具として、超音波内視鏡下穿刺吸引法（ＥＵＳ－ＦＮＡ：Endoscopic UltraSound-guided Fine Needle Aspiration）に用いられる穿刺針装置が例示される。なお、ＥＵＳ－ＦＮＡとは、胃、十二指腸等の消化管から超音波内視鏡で胸腹部を観察し、消化管内から針を刺して組織サンプルを採取する術式である。 The endoscope treatment tool inserted into the treatment instrument insertion channel of the flexible endoscope is a treatment tool operated by an assistant different from the endoscope operator, and a treatment operated by the endoscope operator. It is roughly divided into ingredients. An example of a treatment tool operated by an endoscope operator is a puncture needle device used in an ultrasonic endoscopic puncture suction (EUS-FNA). EUS-FNA is a technique of observing the thorax and abdomen from the digestive tract such as the stomach and duodenum with an ultrasonic endoscope, and puncturing a needle from the digestive tract to collect a tissue sample.
　内視鏡操作者によって操作される処置具が使用される場合に、内視鏡操作部が内視鏡操作者の一方の手によって把持及び操作され、処置具操作部は内視鏡操作者の他方の手によって把持及び操作される。この場合に、処置具操作部が内視鏡操作部に固定されることが望ましく、内視鏡操作者の一方の手によって把持された内視鏡操作部を介して処置具操作部が安定に支持される。これにより、内視鏡操作者は、他方の手を、専ら処置具操作部の操作に用いることができる。 When a treatment tool operated by an endoscope operator is used, the endoscope operation unit is gripped and operated by one hand of the endoscope operator, and the treatment tool operation unit is operated by the endoscope operator. It is grasped and operated by the other hand. In this case, it is desirable that the treatment instrument operation section is fixed to the endoscope operation section, and the treatment instrument operation section is stably provided via the endoscope operation section held by one hand of the endoscope operator. Supported. Thus, the operator of the endoscope can use the other hand exclusively for operating the treatment tool operation unit.
　特許文献１に記載された超音波内視鏡用穿刺針装置は、非円形状の鍔部を備える超音波内視鏡の口金が挿入される筒状接続部と、筒状接続部に挿入された口金を抜け止めするロック部材とを備える。筒状接続部は、所定位置まで挿入された口金と当接する挿入規制部と、非円形状の鍔部が相対回転不能に嵌合する非円形状の鍔部受容孔とを有する。口金が挿入規制部に当接し且つ鍔部が鍔部受容孔に嵌合した状態で、ロック部材は、口金の挿抜方向と交差する方向にスライド移動される。これにより、ロック部材が鍔部と係合し、口金が抜け止めされる。 The puncture needle device for an ultrasonic endoscope described in Patent Literature 1 has a cylindrical connection portion into which a base of an ultrasonic endoscope having a non-circular flange portion is inserted, and is inserted into the cylindrical connection portion. And a lock member for retaining the base. The cylindrical connecting portion has an insertion restricting portion that comes into contact with the base inserted to a predetermined position, and a non-circular flange receiving hole into which the non-circular flange is fitted so as to be relatively non-rotatable. The lock member is slid in a direction intersecting with the insertion / removal direction of the base in a state where the base is in contact with the insertion restricting portion and the flange is fitted into the flange receiving hole. As a result, the locking member engages with the flange, and the base is prevented from coming off.
　特許文献２に記載された内視鏡用アダプタは、内視鏡と内視鏡の管路に挿通される内視鏡用処置具とを接続するものであり、内視鏡の管路口金と同一軸線上に配置され、内視鏡用処置具が着脱自在な処置具固定口金を有する。内視鏡用アダプタが内視鏡の管路口金に固定され、その後に内視鏡用処置具が内視鏡用アダプタの処置具固定口金に固定されることにより、内視鏡用処置具が内視鏡に固定される。 The endoscope adapter described in Patent Literature 2 connects an endoscope and a treatment tool for an endoscope that is inserted into a conduit of the endoscope. The treatment tool for an endoscope has a treatment tool fixing base that is disposed on the same axis and is detachable. The endoscope adapter is fixed to the endoscope conduit base, and then the endoscope treatment tool is fixed to the endoscope adapter treatment tool fixing base, so that the endoscope treatment tool is fixed. Fixed to the endoscope.
日本国特開２０１０－２６９１２６号公報JP 2010-269126 A 日本国特開２０１０－９４３６７号公報Japanese Patent Application Laid-Open No. 2010-94367
　特許文献１に記載された超音波内視鏡用穿刺針装置は、ロック部材がスライド移動されることによって、筒状接続部の口金に対する軸方向の移動が規制される。そして、軸方向の移動が規制されることによって鍔部と鍔部受容孔との嵌合が維持され、これにより筒状接続部の口金に対する軸回りの回転が規制される。このように、筒状接続部の口金に対する固定が、可動なロック部材によって行われるため、構成が複雑であり、強度不足も懸念される。 は In the puncture needle device for an ultrasonic endoscope described in Patent Literature 1, the axial movement of the cylindrical connection portion with respect to the base is regulated by sliding the lock member. Then, the engagement of the flange portion and the flange portion receiving hole is maintained by restricting the movement in the axial direction, whereby the rotation of the cylindrical connection portion around the axis with respect to the base is restricted. As described above, since the fixing of the cylindrical connection portion to the base is performed by the movable lock member, the configuration is complicated, and there is a concern about insufficient strength.
　特許文献２に記載された内視鏡用アダプタでは、内視鏡用処置具の使用開始前に、あらかじめ内視鏡用アダプタを内視鏡の管路口金に取り付けておく手間が必要となる。さらに、複数の内視鏡用処置具が使用される場合において、例えば干渉等に起因して内視鏡用アダプタとの組み合わせが不適な内視鏡用処置具が含まれる場合には、その都度、内視鏡用アダプタを内視鏡の管路口金から取り外す必要があり、交換作業が煩雑となる。 In the endoscope adapter described in Patent Literature 2, it is necessary to attach the endoscope adapter to the conduit base of the endoscope before starting use of the endoscope treatment tool. Further, in the case where a plurality of endoscope treatment tools are used, for example, when an endoscope treatment tool that is inappropriate for combination with the endoscope adapter due to interference or the like is included, in each case, In addition, it is necessary to remove the endoscope adapter from the end cap of the endoscope, which makes the replacement operation complicated.
　本発明は、上述した事情に鑑みなされたものであり、内視鏡用処置具及び内視鏡用補助具を、簡易な構成によって内視鏡操作部に強固に取り付け可能且つ容易に着脱可能とすることを目的とする。 The present invention has been made in view of the above-described circumstances, and enables a treatment tool for an endoscope and an auxiliary tool for an endoscope to be securely attached to an endoscope operation unit with a simple configuration and to be easily detachable. The purpose is to do.
　本発明の一態様の内視鏡用処置具は、内視鏡操作部における処置具挿通チャンネルの入口部分に設けられており、上記処置具挿通チャンネルの軸方向にみた場合に非円形状に形成されたフランジ部を有する口金に固定可能な処置具操作部を備え、上記処置具操作部は、上記フランジ部と同一形状であり且つ上記フランジ部が挿通可能な開口部と、上記フランジ部が上記開口部を通過した状態で上記処置具操作部が上記内視鏡操作部に対して上記処置具挿通チャンネルの中心軸回りに回転されることにより、上記フランジ部と係合する係合部と、上記係合部が上記フランジ部と係合した状態で、上記内視鏡操作部における上記口金の周囲の座面に当接する当接部と、を有する。 The treatment tool for an endoscope according to one aspect of the present invention is provided at an entrance portion of the treatment tool insertion channel in the endoscope operation unit, and is formed in a non-circular shape when viewed in the axial direction of the treatment tool insertion channel. A treatment tool operation portion that can be fixed to a mouthpiece having a flange portion, wherein the treatment tool operation portion has the same shape as the flange portion, and an opening through which the flange portion can be inserted; The treatment tool operation unit is rotated about the central axis of the treatment tool insertion channel with respect to the endoscope operation unit in a state of passing through the opening, and an engagement unit that engages with the flange unit, A contact portion that contacts a seat surface around the base in the endoscope operation portion in a state where the engagement portion is engaged with the flange portion.
　また、本発明の一態様の内視鏡用補助具は、内視鏡操作部の処置具挿通チャンネルの入口部分に設けられており、上記処置具挿通チャンネルの軸方向にみた場合に非円形状に形成された第１フランジ部を有する口金に固定可能な第１端部と、上記第１フランジ部と同一の第２フランジ部を有し、上記内視鏡用処置具の上記処置具操作部が固定可能な第２端部と、上記第１端部と上記第２端部とを連結しており、上記第２端部に固定された上記処置具操作部から延びる処置具軟性部を挿通可能な硬質な筒部と、を備え、上記第１端部は、上記第１フランジ部と同一形状であり且つ上記フランジ部が挿通可能な開口部と、上記フランジ部が上記開口部を通過した状態で上記第１端部が上記内視鏡操作部に対して上記処置具挿通チャンネルの中心軸回りに回転されることにより、上記フランジ部と係合する係合部と、上記係合部が上記フランジ部と係合した状態で、上記内視鏡操作部における上記口金の周囲の座面に当接する当接部と、を有する。 The endoscope auxiliary tool according to one aspect of the present invention is provided at an entrance of the treatment tool insertion channel of the endoscope operation unit, and has a non-circular shape when viewed in the axial direction of the treatment tool insertion channel. A first end portion that can be fixed to a base having a first flange portion formed on the end portion, and a second flange portion that is the same as the first flange portion, and the treatment tool operation portion of the treatment tool for an endoscope. Connects the first end portion and the second end portion that can be fixed, and inserts a treatment instrument flexible portion extending from the treatment instrument operation portion fixed to the second end portion. A rigid tube portion, wherein the first end portion has the same shape as the first flange portion and an opening through which the flange portion can be inserted, and the flange portion has passed through the opening portion. In the state, the first end is located at the center of the treatment instrument insertion channel with respect to the endoscope operation section. By being rotated around, the engaging portion that engages with the flange portion, and in a state where the engaging portion is engaged with the flange portion, the engaging portion around the base in the endoscope operating portion And an abutting portion that abuts.
　また、本発明の一態様の内視鏡は、処置具挿通チャンネルの軸方向にみた場合に非円形状に形成されたフランジ部を有する口金が、内視鏡操作部における処置具挿通チャンネルの入口部分に設けられており、上記内視鏡用処置具の上記処置具操作部、又は上記内視鏡用補助具の上記第１端部が上記口金に固定可能である。 Further, in the endoscope according to one aspect of the present invention, the base having the flange portion formed in a non-circular shape when viewed in the axial direction of the treatment tool insertion channel is provided at the entrance of the treatment tool insertion channel in the endoscope operation unit. The treatment instrument operating section of the treatment instrument for the endoscope or the first end of the auxiliary tool for the endoscope can be fixed to the base.
　本発明によれば、内視鏡用処置具及び内視鏡用補助具を、簡易な構成によって内視鏡操作部に強固に取り付け可能且つ容易に着脱可能とすることができる。 According to the present invention, the treatment tool for the endoscope and the auxiliary tool for the endoscope can be firmly attached to the endoscope operation section and easily detachable with a simple configuration.
本発明の実施形態を説明するための、内視鏡の一例の斜視図である。FIG. 1 is a perspective view of an example of an endoscope for describing an embodiment of the present invention. 図１の内視鏡を含む内視鏡システムの一例の模式図である。FIG. 2 is a schematic diagram of an example of an endoscope system including the endoscope of FIG. 1. 本発明の実施形態を説明するための、内視鏡用処置具の一例の分解斜視図である。It is an exploded perspective view of an example of an endoscope treatment tool for explaining an embodiment of the present invention. 図３の内視鏡用処置具の使用方法を示す斜視図である。FIG. 4 is a perspective view showing how to use the endoscope treatment tool of FIG. 3. 図１の内視鏡の口金の一例の斜視図である。FIG. 2 is a perspective view of an example of a base of the endoscope in FIG. 1. 図５の口金の平面図である。It is a top view of the base of FIG. 図３の内視鏡用処置具の口金に対する固定部分の平面図である。FIG. 4 is a plan view of a fixing portion of the endoscope treatment tool of FIG. 3 with respect to a base. 図７の固定部分のVIII－VIII線断面図である。FIG. 8 is a sectional view taken along line VIII-VIII of the fixed portion in FIG. 7. 図７の固定部分のIX－IX線断面図である。FIG. 9 is a sectional view taken along line IX-IX of the fixed portion in FIG. 7. 図７の固定部分の変形例の模式図である。It is a schematic diagram of a modification of the fixed part of FIG. 本発明の実施形態を説明するための、内視鏡用補助具の一例の斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of an example of the auxiliary tool for endoscopes for describing embodiment of this invention. 図１１の内視鏡用補助具の第１端部の平面図である。It is a top view of the 1st end part of the auxiliary tool for endoscopes of FIG. 図１１の内視鏡用補助具の第２端部の斜視図である。It is a perspective view of the 2nd end part of the auxiliary tool for endoscopes of FIG. 図１１の内視鏡用補助具の変形例の模式図である。FIG. 13 is a schematic view of a modification of the endoscope aid of FIG. 11.
　図１は、本発明の実施形態を説明するための、内視鏡の一例を示し、図２は、図１の内視鏡を含む内視鏡システムの一例を示す。 FIG. 1 shows an example of an endoscope for describing an embodiment of the present invention, and FIG. 2 shows an example of an endoscope system including the endoscope of FIG.
　内視鏡システム１は、内視鏡２と、光源装置３と、プロセッサユニット４と、吸引ポンプ５とを備える。内視鏡２は軟性鏡であり、被検体内に挿入される挿入部１０と、挿入部１０に連なる内視鏡操作部１１と、内視鏡操作部１１から延びるユニバーサルコード１２とを有し、ユニバーサルコード１２の末端には、光源装置３に接続されるコネクタ１３が設けられている。 The endoscope system 1 includes an endoscope 2, a light source device 3, a processor unit 4, and a suction pump 5. The endoscope 2 is a flexible endoscope, and includes an insertion section 10 inserted into the subject, an endoscope operation section 11 connected to the insertion section 10, and a universal cord 12 extending from the endoscope operation section 11. At the end of the universal cord 12, a connector 13 connected to the light source device 3 is provided.
　挿入部１０は、先端部１４と、先端部１４に連なる湾曲部１５と、湾曲部１５と内視鏡操作部１１とを接続している軟性部１６とで構成されている。先端部１４には、ＣＣＤ（Charge Coupled Device）イメージセンサ、ＣＭＯＳ（ComplementaryMetal Oxide Semiconductor）イメージセンサ等の撮像素子を含む撮像部１７が搭載されている。なお、内視鏡２が超音波内視鏡である場合に、先端部１４には、撮像部１７に替えて、又は撮像部１７に加えて超音波を発信及び受信する超音波振動子が搭載される。湾曲部１５は湾曲可能に構成されており、湾曲部１５の湾曲は内視鏡操作部１１によって操作される。また、軟性部１６は、被検体内の挿入経路の形状に倣って変形可能な程に可撓に構成されている。 The insertion section 10 includes a distal end portion 14, a bending portion 15 connected to the distal end portion 14, and a flexible portion 16 connecting the bending portion 15 and the endoscope operation portion 11. An imaging unit 17 including an imaging device such as a CCD (Charge Coupled Device) image sensor and a CMOS (Complementary Metal Oxide Semiconductor) image sensor is mounted on the distal end portion 14. When the endoscope 2 is an ultrasonic endoscope, an ultrasonic transducer for transmitting and receiving ultrasonic waves is mounted on the distal end portion 14 in place of or in addition to the imaging unit 17. Is done. The bending section 15 is configured to be bendable, and the bending of the bending section 15 is operated by the endoscope operation section 11. Further, the flexible portion 16 is configured to be flexible enough to be deformable following the shape of the insertion path in the subject.
　内視鏡操作部１１には、吸引ポンプ５を用いた吸引を操作する操作ボタン１８Ａ、湾曲部１５の湾曲を操作する操作ノブ１８Ｂ、撮像部１７を用いた撮像を操作する操作ボタン１８Ｃ等が設けられている。また、内視鏡操作部１１には、処置具が挿通される処置具挿通チャンネル２３の入口部分２４が設けられている。 The endoscope operation unit 11 includes an operation button 18A for operating suction using the suction pump 5, an operation knob 18B for operating the bending of the bending unit 15, an operation button 18C for operating imaging using the imaging unit 17, and the like. Is provided. In addition, the endoscope operation section 11 is provided with an entrance portion 24 of a treatment instrument insertion channel 23 through which the treatment instrument is inserted.
　挿入部１０及び内視鏡操作部１１並びにユニバーサルコード１２の内部には、ライトガイド２０と、電気ケーブル２１とが設けられている。ライトガイド２０は、光源装置３によって生成される照明光を先端部１４に導く。電気ケーブル２１は、撮像部１７の動作電力、制御信号、及び撮影画像信号を、撮像部１７とプロセッサユニット４との間で伝送する。プロセッサユニット４は、入力された撮影画像信号から撮影画像データを生成し、生成した撮影画像データをモニタ６に表示させ、また記録する。 ラ イ ト A light guide 20 and an electric cable 21 are provided inside the insertion section 10, the endoscope operation section 11, and the universal cord 12. The light guide 20 guides the illumination light generated by the light source device 3 to the distal end portion 14. The electric cable 21 transmits the operating power of the imaging unit 17, a control signal, and a captured image signal between the imaging unit 17 and the processor unit 4. The processor unit 4 generates captured image data from the input captured image signal, displays the generated captured image data on the monitor 6, and records the data.
　挿入部１０及び内視鏡操作部１１の内部には、複数の操作ワイヤ２２と、処置具挿通チャンネル２３とが設けられている。操作ワイヤ２２は、内視鏡操作部１１から挿入部１０の先端部１４に達しており、内視鏡操作部１１の操作ノブ１８Ｂの操作に応じて先端部１４側に押し出され、又は内視鏡操作部１１側に引っ張られる。挿入部１０の湾曲部１５は、操作ワイヤ２２の押し引きに応じて湾曲される。処置具挿通チャンネル２３は、内視鏡操作部１１に設けられている入口部分２４から挿入部１０の先端部１４に達しており、処置具挿通チャンネル２３の出口部分２５は先端部１４の先端面に開口している。内視鏡操作部１１には、処置具挿通チャンネル２３の入口部分２４の開口を形成する口金３０が設けられており、処置具挿通チャンネル２３に挿通される内視鏡用処置具は、口金３０に固定可能である。 複数 A plurality of operation wires 22 and a treatment tool insertion channel 23 are provided inside the insertion section 10 and the endoscope operation section 11. The operation wire 22 reaches the distal end portion 14 of the insertion portion 10 from the endoscope operation portion 11, and is pushed out toward the distal end portion 14 in response to operation of the operation knob 18B of the endoscope operation portion 11, or the endoscope is operated. It is pulled to the mirror operation unit 11 side. The bending section 15 of the insertion section 10 is bent in accordance with the pushing and pulling of the operation wire 22. The treatment tool insertion channel 23 extends from the entrance portion 24 provided in the endoscope operation section 11 to the distal end portion 14 of the insertion portion 10, and the exit portion 25 of the treatment instrument insertion channel 23 has a distal end surface of the distal end portion 14. It is open to. The endoscope operation unit 11 is provided with a base 30 that forms an opening of the entrance portion 24 of the treatment tool insertion channel 23. The endoscope treatment tool inserted into the treatment tool insertion channel 23 is a base 30. Can be fixed to
　また、処置具挿通チャンネル２３は、内視鏡操作部１１において吸引管２６と合流している。吸引管２６は、操作ボタン１８Ａによって開閉されるバルブ２７を経てコネクタ１３まで延びており、コネクタ１３に設けられている口金２８に接続された接続チューブ２９を介して吸引ポンプ５と接続されている。バルブ２７が開かれることにより、血液等の流体が、処置具挿通チャンネル２３の出口部分２５の開口から吸引管２６を通して吸引ポンプ５に吸引される。 The treatment instrument insertion channel 23 joins the suction tube 26 in the endoscope operation section 11. The suction pipe 26 extends to the connector 13 via a valve 27 opened and closed by the operation button 18A, and is connected to the suction pump 5 via a connection tube 29 connected to a base 28 provided on the connector 13. . When the valve 27 is opened, a fluid such as blood is sucked into the suction pump 5 from the opening of the outlet 25 of the treatment instrument insertion channel 23 through the suction tube 26.
　図３及び図４は、本発明の実施形態を説明するための、内視鏡用処置具の一例を示す。 FIGS. 3 and 4 show an example of an endoscope treatment tool for describing an embodiment of the present invention.
　図３及び図４に示す内視鏡用処置具１００は、穿刺針装置であり、軟質な軸部１１０及び軸部１１０の先端に連設された穿刺部１１１を有する穿刺針１０１と、穿刺針１０１を挿通させる軟質なシース１０２と、穿刺針１０１を操作するための処置具操作部１０３とを備える。なお、内視鏡用処置具１００は、穿刺針装置に限定されず、高周波はさみ鉗子、高周波ナイフ、バイポーラ止血鉗子、クリップ、回収ネット等でもよい。 An endoscope treatment tool 100 shown in FIGS. 3 and 4 is a puncture needle device, and includes a puncture needle 101 having a soft shaft portion 110 and a puncture portion 111 continuously provided at the tip of the shaft portion 110, and a puncture needle. The treatment apparatus includes a soft sheath 102 through which the needle 101 is inserted, and a treatment instrument operation unit 103 for operating the puncture needle 101. Note that the treatment tool 100 for the endoscope is not limited to the puncture needle device, and may be a high-frequency scissor forceps, a high-frequency knife, a bipolar hemostat, a clip, a collection net, or the like.
　処置具操作部１０３は、本体部１１２と、本体部１１２に対してスライド移動されるハンドル１１３とを有する。本体部１１２は、本体部１１２の先端部１１４から延びるシース１０２に向けて穿刺針１０１を案内する。ハンドル１１３は、シース１０２に挿入された穿刺針１０１を着脱可能に保持する。 The treatment instrument operation unit 103 has a main body 112 and a handle 113 that is slid with respect to the main body 112. The main body 112 guides the puncture needle 101 toward the sheath 102 extending from the distal end 114 of the main body 112. The handle 113 detachably holds the puncture needle 101 inserted into the sheath 102.
　シース１０２は、処置具挿通チャンネル２３の入口部分２４の開口を通して処置具挿通チャンネル２３に挿入される。処置具挿通チャンネル２３に挿入されたシース１０２の先端部は、処置具挿通チャンネル２３の出口部分２５の開口を通して、内視鏡２の先端部１４から突出して配置される。 The sheath 102 is inserted into the treatment instrument insertion channel 23 through the opening of the entrance portion 24 of the treatment instrument insertion channel 23. The distal end of the sheath 102 inserted into the treatment instrument insertion channel 23 is disposed so as to protrude from the distal end 14 of the endoscope 2 through the opening of the outlet portion 25 of the treatment instrument insertion channel 23.
　内視鏡２の撮像部１７によって取得される光学像及び／又は超音波振動子によって取得されるエコー像を用いた観察下において、内視鏡操作者により、内視鏡用処置具１００のシース１０２の先端部が被検体の検査部位を臨む位置に配置される。そして、ハンドル１１３が内視鏡操作者によって押し込まれる。ハンドル１１３が押し込まれることにより、穿刺針１０１の穿刺部１１１が、シース１０２の先端部から突出して被検体の検査部位に刺さり、検査部位の組織サンプルが採取される。 Under observation using an optical image acquired by the imaging unit 17 of the endoscope 2 and / or an echo image acquired by the ultrasonic transducer, a sheath of the endoscope treatment tool 100 is operated by an endoscope operator. The tip of 102 is arranged at a position facing the examination site of the subject. Then, the handle 113 is pushed by the endoscope operator. When the handle 113 is pushed in, the puncture portion 111 of the puncture needle 101 projects from the distal end of the sheath 102 and pierces the test site of the subject, and a tissue sample of the test site is collected.
　以上の操作において、処置具操作部１０３は、内視鏡操作部１１の口金３０に固定されている。これにより、内視鏡操作者は、内視鏡操作部１１を把持している一方の手とは反対側の手を、専ら処置具操作部１０３の操作に用いることができる。 In the above operation, the treatment instrument operation section 103 is fixed to the base 30 of the endoscope operation section 11. Thus, the endoscope operator can use the hand opposite to the one hand holding the endoscope operation unit 11 exclusively for operating the treatment instrument operation unit 103.
　図５及び図６は、内視鏡操作部１１の口金３０を示す。 FIGS. 5 and 6 show the base 30 of the endoscope operation unit 11.
　口金３０は、筒部３１と、筒部３１の外周面から径方向に突出して設けられているフランジ部３２とを有する。筒部３１は、内視鏡操作部１１から突出して設けられており、内視鏡操作部１１における筒部３１の周囲には、平坦な座面３３が形成されている。筒部３１は、処置具挿通チャンネル２３に連通しており、フランジ部３２は、処置具挿通チャンネル２３の軸方向にみた場合に、非円形状に形成されている。図５及び図６に示す例では、フランジ部３２は、円の中心を挟んで互いに反対側に位置する一対の円弧が切り落とされてなる非円形状に形成されているが、フランジ部３２の形状は、正方形、長方形、楕円形であってもよい。 The base 30 has a cylindrical portion 31 and a flange portion 32 provided to protrude radially from the outer peripheral surface of the cylindrical portion 31. The tube portion 31 is provided so as to protrude from the endoscope operation portion 11, and a flat seat surface 33 is formed around the tube portion 31 in the endoscope operation portion 11. The tubular portion 31 communicates with the treatment instrument insertion channel 23, and the flange portion 32 is formed in a non-circular shape when viewed in the axial direction of the treatment instrument insertion channel 23. In the example shown in FIGS. 5 and 6, the flange portion 32 is formed in a non-circular shape obtained by cutting off a pair of arcs located on opposite sides of the center of the circle. May be square, rectangular, or elliptical.
　図７から図９は、処置具操作部１０３の口金３０に対する固定部分を示す。 FIGS. 7 to 9 show a fixing portion of the treatment tool operation section 103 to the base 30. FIG.
　処置具操作部１０３は、本体部１１２の先端部１１４によって口金３０に固定される。本体部１１２の先端部１１４は、シース１０２の周囲を取り囲む環状に形成されており、口金３０は、シース１０２の外周面と先端部１１４の内周面との間に差し込まれる。この先端部１１４は、開口部１２０と、係合部１２１と、当接部１２２とを有する。 The treatment instrument operation unit 103 is fixed to the base 30 by the distal end 114 of the main body 112. The distal end 114 of the main body 112 is formed in an annular shape surrounding the periphery of the sheath 102, and the base 30 is inserted between the outer peripheral surface of the sheath 102 and the inner peripheral surface of the distal end 114. The tip 114 has an opening 120, an engaging part 121, and a contact part 122.
　開口部１２０は、先端部１１４の内部に設けられている。開口部１２０は、口金３０のフランジ部３２と同一形状に形成されており、図７及び図８に示す例では、円の中心を挟んで互いに反対側に位置する一対の円弧が切り落とされてなる非円形状に形成されている。そして、開口部１２０は、フランジ部３２よりも僅かに大きく形成されており、図８に示すように、フランジ部３２が挿通可能である。 The opening 120 is provided inside the distal end 114. The opening 120 is formed in the same shape as the flange 32 of the base 30. In the example shown in FIGS. 7 and 8, a pair of arcs located on opposite sides of the center of the circle are cut off. It is formed in a non-circular shape. And the opening part 120 is formed slightly larger than the flange part 32, and the flange part 32 can be penetrated as shown in FIG.
　係合部１２１は、先端部１１４の内周面から径方向に突出して設けられており、開口部１２０を内包する円から開口部１２０を除いた形状に形成され、開口部１２０の外周を囲んでいる。フランジ部３２が開口部１２０を通過した状態で処置具操作部１０３が内視鏡操作部１１に対して口金３０の中心軸回りに回転されることにより、図９に示すように、係合部１２１はフランジ部３２と係合する。 The engaging portion 121 is provided so as to protrude radially from the inner peripheral surface of the distal end portion 114, and is formed in a shape excluding the opening portion 120 from a circle including the opening portion 120, and surrounds the outer periphery of the opening portion 120. In. When the treatment instrument operation unit 103 is rotated about the center axis of the base 30 with respect to the endoscope operation unit 11 in a state where the flange portion 32 has passed through the opening portion 120, as shown in FIG. 121 engages with the flange portion 32.
　当接部１２２は、先端部１１４の先端面を構成している。係合部１２１がフランジ部３２と係合した状態で、図９に示すように、当接部１２２は、内視鏡操作部１１の座面３３に当接している。係合部１２１及び当接部１２２を含む固定部分が、フランジ部３２と座面３３との間で挟持され、これにより、処置具操作部１０３は口金３０に固定される。 The contact portion 122 forms the distal end surface of the distal end portion 114. In a state where the engaging portion 121 is engaged with the flange portion 32, as shown in FIG. 9, the contact portion 122 contacts the seat surface 33 of the endoscope operation portion 11. A fixed portion including the engaging portion 121 and the contact portion 122 is sandwiched between the flange portion 32 and the seat surface 33, whereby the treatment instrument operation portion 103 is fixed to the base 30.
　係合部１２１及び当接部１２２は、先端部１１４に対して不動であり、構成が簡易である。また、先端部１１４に対して不動な係合部１２１及び当接部１２２の強度は、可動部よりも容易に高められる。したがって、処置具操作部１０３を内視鏡操作部１１に強固に取り付けられる。そして、処置具操作部１０３を回転させるだけで、処置具操作部１０３を内視鏡操作部１１に対して容易に着脱できる。 The engaging portion 121 and the abutting portion 122 are immovable with respect to the distal end portion 114 and have a simple configuration. Further, the strength of the engaging portion 121 and the abutting portion 122 that are immovable with respect to the distal end portion 114 can be more easily increased than that of the movable portion. Therefore, the treatment instrument operation unit 103 can be firmly attached to the endoscope operation unit 11. Then, the treatment instrument operation section 103 can be easily attached to and detached from the endoscope operation section 11 simply by rotating the treatment instrument operation section 103.
　好ましくは、当接部１２２は弾性材料からなり、当接部１２２と座面３３とが当接部１２２の弾性的な圧縮を伴って緊密に接する。これにより、処置具操作部１０３の口金３０に対する固定強度及び気密性が高まる。なお、弾性部材が座面３３に設けられてもよく、この場合にも、処置具操作部１０３の口金３０に対する固定強度及び気密性を高められる。なお、図８において二点鎖線で示すシール箇所ＳＰ（口金３０の円形状のフランジ部３５の外周面と先端部１１４の内周面との間、口金３０の円形状のフランジ部３６の外周面と先端部１１４の内周面との間、及び口金３０の先端部と先端部１１４の底部との間）に、気密用の弾性部材を配置してもよい。 Preferably, the contact portion 122 is made of an elastic material, and the contact portion 122 and the seat surface 33 are in close contact with each other with the elastic compression of the contact portion 122. Thereby, the fixing strength and airtightness of the treatment tool operation unit 103 to the base 30 are increased. Note that an elastic member may be provided on the seat surface 33, and in this case also, the strength of fixing the treatment instrument operation unit 103 to the base 30 and the airtightness can be increased. In FIG. 8, a seal point SP indicated by a two-dot chain line (between the outer peripheral surface of the circular flange portion 35 of the base 30 and the inner peripheral surface of the distal end portion 114 and the outer peripheral surface of the circular flange portion 36 of the base 30. An airtight elastic member may be arranged between the inner peripheral surface of the distal end portion 114 and between the distal end portion of the base 30 and the bottom of the distal end portion 114).
　また、処置具操作部１０３は、係合部１２１が口金３０のフランジ部３２と係合した状態で処置具操作部１０３の内視鏡操作部１１に対する回転を阻止するロック部を有してもよい。図１０に示すロック部１３０は、一対の円弧が切り落とされてなる非円形状に形成されたフランジ部３２において、切り落とされた円弧の弦に対応する長辺部３４に係合するロックバー１３１と、ロックバー１３１を付勢するバネ１３２とによって構成されている。ロックバー１３１は、内視鏡操作者が任意にロック解除できるように、ロック解除操作部１３３を有する。ロックバー１３１は、フランジ部３２の長辺部３４との係合に限定されず、例えばフランジ部３２又は口金３０のその他の箇所に切り欠き又は穴が別途設けられ、この切り欠き又は穴に係合してもよい。また、ロック部は、先端部１１４を径方向に貫通して、先端部１１４に挿し込まれた口金３０に当接するネジによって構成されてもよい。いずれの構成においても、内視鏡操作者が任意に回転方向の固定の有無を切り替えることが可能である。 Further, the treatment instrument operation section 103 may have a lock section for preventing the treatment instrument operation section 103 from rotating with respect to the endoscope operation section 11 in a state where the engagement section 121 is engaged with the flange section 32 of the base 30. Good. The lock portion 130 shown in FIG. 10 includes a lock bar 131 that engages with the long side portion 34 corresponding to the chord of the cut-off arc in the non-circular flange portion 32 formed by cutting off a pair of arcs. , And a spring 132 for urging the lock bar 131. The lock bar 131 has a lock release operation section 133 so that the operator of the endoscope can arbitrarily release the lock. The lock bar 131 is not limited to the engagement with the long side portion 34 of the flange portion 32. For example, a notch or a hole is separately provided in the flange portion 32 or another portion of the base 30, and the lock bar 131 engages with the notch or the hole. May be combined. Further, the lock portion may be configured by a screw that penetrates the distal end portion 114 in the radial direction and contacts the base 30 inserted into the distal end portion 114. In any of the configurations, the endoscope operator can arbitrarily switch between fixing and non-fixing in the rotation direction.
　図１１から図１３は、本発明の実施形態を説明するための、内視鏡用補助具の一例を示す。 FIGS. 11 to 13 show an example of an endoscope assisting tool for describing an embodiment of the present invention.
　図１１に示す内視鏡用補助具２００は、内視鏡操作部１１と処置具操作部１０３との間に設置され、処置具挿通チャンネル２３を通して内視鏡２の先端部１４から突出して配置される内視鏡用処置具１００のシース１０２の突出量を調節するものである。内視鏡用補助具２００は、内視鏡操作部１１の口金３０に固定可能な第１端部２０１と、処置具操作部１０３が固定可能な第２端部２０２と、第１端部２０１と第２端部２０２とを連結している筒部２０３とを備える。筒部２０３は、硬質であり、処置具操作部１０３の先端部１１４から延びるシース１０２を挿通可能である。 The endoscope auxiliary tool 200 shown in FIG. 11 is installed between the endoscope operation section 11 and the treatment instrument operation section 103, and protrudes from the distal end portion 14 of the endoscope 2 through the treatment instrument insertion channel 23. The protrusion amount of the sheath 102 of the endoscopic treatment tool 100 is adjusted. The endoscope auxiliary tool 200 includes a first end 201 that can be fixed to the base 30 of the endoscope operation section 11, a second end 202 that can fix the treatment instrument operation section 103, and a first end 201. And a cylindrical portion 203 connecting the second end portion 202 and the second end portion 202. The tubular portion 203 is hard, and can penetrate the sheath 102 extending from the distal end portion 114 of the treatment instrument operation portion 103.
　第１端部２０１は、処置具操作部１０３の先端部１１４と同様に構成されており、図１２に示すように、開口部２２０と、係合部２２１と、当接部２２２とを有する。開口部２２０は、環状の第１端部２０１の内部に設けられている。開口部２２０は、内視鏡操作部１１の口金３０のフランジ部３２と同一形状に形成されており、且つフランジ部３２よりも僅かに大きく形成されており、フランジ部３２が挿通可能である。係合部２２１は、環状の第１端部２０１の内周面から径方向に突出して設けられており、開口部２２０の外周を囲んでいる。フランジ部３２が開口部２２０を通過した状態で第１端部２０１が内視鏡操作部１１に対して回転されることにより、係合部２２１はフランジ部３２と係合する。そして、係合部２２１がフランジ部３２と係合した状態で、当接部２２２は、内視鏡操作部１１の座面３３に当接している。係合部２２１及び当接部２２２を含む固定部分が、フランジ部３２と座面３３との間で挟持され、これにより、第１端部２０１は口金３０に固定される。 The first end 201 has the same configuration as the distal end 114 of the treatment instrument operation unit 103, and has an opening 220, an engaging part 221, and a contact part 222 as shown in FIG. 12. The opening 220 is provided inside the annular first end 201. The opening 220 is formed in the same shape as the flange 32 of the base 30 of the endoscope operation unit 11 and is formed slightly larger than the flange 32 so that the flange 32 can be inserted. The engagement portion 221 is provided so as to protrude in the radial direction from the inner peripheral surface of the annular first end 201, and surrounds the outer periphery of the opening 220. When the first end portion 201 is rotated with respect to the endoscope operation portion 11 in a state where the flange portion 32 has passed through the opening portion 220, the engaging portion 221 is engaged with the flange portion 32. Then, with the engagement portion 221 engaged with the flange portion 32, the contact portion 222 contacts the seat surface 33 of the endoscope operation portion 11. A fixing portion including the engaging portion 221 and the contact portion 222 is sandwiched between the flange portion 32 and the seat surface 33, whereby the first end 201 is fixed to the base 30.
　第２端部２０２は、内視鏡操作部１１の口金３０と同様に構成されており、図１３に示すように、筒部２３１と、フランジ部２３２と、座面２３３とを有する。フランジ部２３２は、口金３０のフランジ部３２と同一であり、処置具操作部１０３の先端部１１４の開口部１２０に挿通可能である。フランジ部２３２が開口部１２０を通過した状態で処置具操作部１０３が第２端部２０２に対して回転されることにより、処置具操作部１０３の先端部１１４の係合部１２１がフランジ部２３２と係合する。そして、係合部１２１がフランジ部２３２と係合した状態で、処置具操作部１０３の先端部１１４の当接部１２２は第２端部２０２の座面２３３に当接している。係合部１２１及び当接部１２２を含む固定部分が、フランジ部２３２と座面２３３との間で挟持され、これにより、処置具操作部１０３は第２端部２０２に固定される。 The second end 202 is configured similarly to the base 30 of the endoscope operation unit 11, and has a cylindrical portion 231, a flange 232, and a seat surface 233 as shown in FIG. The flange portion 232 is the same as the flange portion 32 of the base 30, and can be inserted into the opening 120 of the distal end portion 114 of the treatment instrument operation unit 103. When the treatment instrument operation section 103 is rotated with respect to the second end 202 while the flange section 232 has passed through the opening section 120, the engaging section 121 of the distal end portion 114 of the treatment instrument operation section 103 is turned into the flange section 232. Engage with. Then, in a state where the engaging portion 121 is engaged with the flange portion 232, the contact portion 122 of the distal end portion 114 of the treatment instrument operating portion 103 is in contact with the seating surface 233 of the second end portion 202. A fixed portion including the engaging portion 121 and the contact portion 122 is sandwiched between the flange portion 232 and the seat surface 233, whereby the treatment instrument operating portion 103 is fixed to the second end 202.
　例えば、内視鏡２の先端部１４から突出して配置される内視鏡用処置具１００のシース１０２の突出量が小さくされる際に、シース１０２に余剰が生じる。シース１０２の余剰長さは、処置具操作部１０３が内視鏡操作部１１から分離され、内視鏡操作部１１と処置具操作部１０３との間に配置される。内視鏡用補助具２００が無い場合に、内視鏡操作部１１と処置具操作部１０３との間に配置されるシース１０２が撓むことにより、処置具操作部１０３が垂れ下がる。このため、処置具操作部１０３は内視鏡操作者の支持を必要とする。これに対し、内視鏡用補助具２００によれば、シース１０２の余剰長さは硬質な筒部２０３に収納され、処置具操作部１０３は、内視鏡用補助具２００を介して内視鏡操作部１１に固定される。これにより、内視鏡操作者は、内視鏡操作部１１を把持している一方の手とは反対側の手を、専ら処置具操作部１０３の操作に用いることができる。 For example, when the amount of protrusion of the sheath 102 of the treatment tool 100 for an endoscope that is arranged to protrude from the distal end portion 14 of the endoscope 2 is reduced, the sheath 102 becomes excessive. The surplus length of the sheath 102 is such that the treatment instrument operation unit 103 is separated from the endoscope operation unit 11 and is disposed between the endoscope operation unit 11 and the treatment instrument operation unit 103. When the endoscope auxiliary tool 200 is not provided, the sheath 102 disposed between the endoscope operation section 11 and the treatment instrument operation section 103 bends, so that the treatment instrument operation section 103 hangs down. For this reason, the treatment tool operation unit 103 requires the support of the endoscope operator. On the other hand, according to the endoscope assisting device 200, the surplus length of the sheath 102 is stored in the rigid cylindrical portion 203, and the treatment instrument operation unit 103 performs endoscope through the endoscope assisting device 200. It is fixed to the mirror operation unit 11. Thus, the endoscope operator can use the hand opposite to the one hand holding the endoscope operation unit 11 exclusively for operating the treatment instrument operation unit 103.
　なお、第１端部２０１の当接部２２２は、弾性材料からなってもよい。当接部２２２と座面３３とが、当接部２２２の弾性的な圧縮を伴って緊密に接し、第１端部２０１の口金３０に対する固定強度が高まる。また、第１端部２０１は、係合部２２１が口金３０のフランジ部３２と係合した状態で第１端部２０１の内視鏡操作部１１に対する回転を阻止するロック部を有してもよい。第１端部２０１のロック部は、図１０に示したロック部１３０と同様に構成され得る。 Note that the contact portion 222 of the first end 201 may be made of an elastic material. The contact portion 222 and the seat surface 33 come into tight contact with each other with the elastic compression of the contact portion 222, and the fixing strength of the first end 201 to the base 30 is increased. Further, the first end 201 may have a lock portion that prevents the rotation of the first end 201 with respect to the endoscope operating portion 11 in a state where the engaging portion 221 is engaged with the flange portion 32 of the base 30. Good. The lock portion of the first end 201 can be configured similarly to the lock portion 130 shown in FIG.
　図１４は、内視鏡用補助具２００の変形例を示し、筒部２０３が、第１端部２０１に接続されている第１筒部材２１０と、第２端部２０２に接続されている第２筒部材２１１とを有する。第２筒部材２１１は、第１筒部材２１０に対して、筒部２０３の軸方向に進退可能に第１筒部材２１０に嵌合している。第２筒部材２１１の進退移動によって筒部２０３の長さが可変となり、内視鏡２の先端部１４から突出して配置される内視鏡用処置具１００のシース１０２の突出量を種々に変更できる。また、第２筒部材２１１は、第１筒部材２１０に対して筒部２０３の中心軸回りに回転可能である。第２筒部材２１１の回転によって第２端部２０２に固定された処置具操作部１０３が回転可能となり、内視鏡用処置具１００の操作性を高めることができる。なお、互いに嵌合している第１筒部材２１０と第２筒部材２１１との間には適宜な摩擦が作用しており、この摩擦によって第１筒部材２１０と第２筒部材２１１との位置関係は保たれるので、内視鏡操作者の支持は不要である。 FIG. 14 shows a modified example of the endoscope auxiliary tool 200, in which a tubular portion 203 is connected to a first tubular member 210 connected to a first end 201 and a second tubular member 210 connected to a second end 202. And two tubular members 211. The second cylindrical member 211 is fitted to the first cylindrical member 210 so as to be able to advance and retreat in the axial direction of the cylindrical portion 203 with respect to the first cylindrical member 210. The length of the cylindrical portion 203 is made variable by the reciprocating movement of the second cylindrical member 211, and the amount of protrusion of the sheath 102 of the treatment tool 100 for the endoscope that is arranged to protrude from the distal end portion 14 of the endoscope 2 is variously changed. it can. Further, the second tubular member 211 is rotatable around the central axis of the tubular portion 203 with respect to the first tubular member 210. The rotation of the second cylindrical member 211 allows the treatment instrument operation unit 103 fixed to the second end 202 to rotate, thereby improving the operability of the endoscope treatment instrument 100. Appropriate friction acts between the first cylinder member 210 and the second cylinder member 211 fitted to each other, and the friction causes the position of the first cylinder member 210 and the second cylinder member 211 to be changed. Since the relationship is maintained, there is no need for endoscope operator support.
　以上説明したとおり、本明細書に開示された内視鏡用処置具は、内視鏡操作部における処置具挿通チャンネルの入口部分に設けられており、上記処置具挿通チャンネルの軸方向にみた場合に非円形状に形成されたフランジ部を有する口金に固定可能な処置具操作部を備え、上記処置具操作部は、上記フランジ部と同一形状であり且つ上記フランジ部が挿通可能な開口部と、上記フランジ部が上記開口部を通過した状態で上記処置具操作部が上記内視鏡操作部に対して上記処置具挿通チャンネルの中心軸回りに回転されることにより、上記フランジ部と係合する係合部と、上記係合部が上記フランジ部と係合した状態で、上記内視鏡操作部における上記口金の周囲の座面に当接する当接部と、を有する。 As described above, the treatment tool for an endoscope disclosed in the present specification is provided at the entrance of the treatment tool insertion channel in the endoscope operation unit, and is viewed in the axial direction of the treatment tool insertion channel. A treatment tool operation portion that can be fixed to a base having a flange portion formed in a non-circular shape, wherein the treatment tool operation portion has the same shape as the flange portion and an opening through which the flange portion can be inserted. When the treatment tool operation unit is rotated about the center axis of the treatment instrument insertion channel with respect to the endoscope operation unit in a state where the flange portion has passed through the opening portion, the engagement with the flange portion is achieved. And an abutting portion that abuts on a seat surface around the base in the endoscope operating portion in a state where the engaging portion is engaged with the flange portion.
　また、本明細書に開示された内視鏡用処置具は、上記当接部の先端部が、弾性材料からなる。 In the treatment tool for an endoscope disclosed in the present specification, the distal end of the contact portion is made of an elastic material.
　また、本明細書に開示された内視鏡用処置具は、上記処置具操作部が、上記係合部が上記フランジ部と係合した状態で上記処置具操作部の上記内視鏡操作部に対する上記中心軸回りの回転を阻止するロック部を有する。 In addition, the treatment tool for an endoscope disclosed in the present specification may be configured such that the treatment instrument operation section is configured such that the engagement section is engaged with the flange section, and the endoscope operation section of the treatment instrument operation section. And a lock portion for preventing rotation about the central axis with respect to.
　また、本明細書に開示された内視鏡用補助具は、内視鏡操作部の処置具挿通チャンネルの入口部分に設けられており、上記処置具挿通チャンネルの軸方向にみた場合に非円形状に形成された第１フランジ部を有する口金に固定可能な第１端部と、上記第１フランジ部と同一の第２フランジ部を有し、上記内視鏡用処置具の上記処置具操作部が固定可能な第２端部と、上記第１端部と上記第２端部とを連結しており、上記第２端部に固定された上記処置具操作部から延びる処置具軟性部を挿通可能な硬質な筒部と、を備え、上記第１端部は、上記第１フランジ部と同一形状であり且つ上記第１フランジ部が挿通可能な開口部と、上記第１フランジ部が上記開口部を通過した状態で上記第１端部が上記内視鏡操作部に対して上記処置具挿通チャンネルの中心軸回りに回転されることにより、上記第１フランジ部と係合する係合部と、上記係合部が上記第１フランジ部と係合した状態で、上記内視鏡操作部における上記口金の周囲の座面に当接する当接部と、を有する。 Further, the endoscope auxiliary tool disclosed in the present specification is provided at the entrance of the treatment tool insertion channel of the endoscope operation unit, and is non-circular when viewed in the axial direction of the treatment tool insertion channel. A first end portion that can be fixed to a base having a first flange portion formed in a shape, and a second flange portion that is the same as the first flange portion, wherein the treatment tool operation of the treatment tool for an endoscope is performed. A second end portion to which a portion can be fixed, the first end portion and the second end portion being connected to each other, and a treatment instrument flexible portion extending from the treatment instrument operation portion fixed to the second end portion; A hard cylindrical portion that can be inserted, wherein the first end has the same shape as the first flange portion, and an opening through which the first flange portion can be inserted; When the first end portion passes through the opening, the treatment tool insertion chamber is inserted into the endoscope operation portion. The engagement portion engages with the first flange portion by being rotated about the central axis of the flannel, and the engagement portion engages with the first flange portion, and the endoscope operation portion is engaged with the engagement portion. An abutting portion that abuts a seat surface around the base.
　また、本明細書に開示された内視鏡用補助具は、上記当接部の先端部が、弾性材料からなる。 は Further, in the endoscope assisting tool disclosed in this specification, the tip of the contact portion is made of an elastic material.
　また、本明細書に開示された内視鏡用補助具は、上記第１端部が、上記係合部が上記フランジ部と係合した状態で上記第１端部の上記内視鏡操作部に対する上記中心軸回りの回転を阻止するロック部を有する。 Further, the endoscope assisting tool disclosed in the present specification may be configured such that the first end portion is the endoscope operation portion of the first end portion in a state where the engagement portion is engaged with the flange portion. And a lock portion for preventing rotation about the central axis with respect to.
　また、本明細書に開示された内視鏡用補助具は、上記筒部が、上記第１端部に接続されている第１筒部材と、上記第２端部に接続されている第２筒部材とを有し、上記第２筒部材は、上記第１筒部材に対して上記筒部の軸方向に進退可能に、上記第１筒部材に嵌合している。 Also, in the endoscope assisting tool disclosed in the present specification, the tubular portion has a first tubular member connected to the first end, and a second tubular member connected to the second end. A tubular member, wherein the second tubular member is fitted to the first tubular member so as to be able to advance and retreat in the axial direction of the tubular portion with respect to the first tubular member.
　また、本明細書に開示された内視鏡用補助具は、上記第２筒部材が、上記第１筒部材に対して上記筒部の中心軸回りに回転可能である。 In the endoscope auxiliary tool disclosed in the present specification, the second cylindrical member is rotatable around the central axis of the cylindrical portion with respect to the first cylindrical member.
　また、本明細書に開示された内視鏡用は、処置具挿通チャンネルの軸方向にみた場合に非円形状に形成されたフランジ部を有する口金が、内視鏡操作部における処置具挿通チャンネルの入口部分に設けられており、上記内視鏡用処置具の上記処置具操作部、又は上記内視鏡用補助具の上記第１端部が上記口金に固定可能である。 In addition, the endoscope disclosed in the present specification has a base having a flange portion formed in a non-circular shape when viewed in the axial direction of the treatment instrument insertion channel, the treatment instrument insertion channel in the endoscope operation section. The end portion of the treatment tool for the endoscope or the first end of the auxiliary tool for the endoscope can be fixed to the base.
　以上、図面を参照しながら各種の実施の形態について説明したが、本発明はかかる例に限定されないことは言うまでもない。当業者であれば、特許請求の範囲に記載された範疇内において、各種の変更例又は修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。また、発明の趣旨を逸脱しない範囲において、上記実施の形態における各構成要素を任意に組み合わせてもよい。 Although various embodiments have been described with reference to the drawings, it is needless to say that the present invention is not limited to such examples. It is clear that those skilled in the art can conceive various changes or modifications within the scope of the claims, and these naturally belong to the technical scope of the present invention. I understand. Further, each component in the above embodiment may be arbitrarily combined without departing from the spirit of the invention.
　なお、本出願は、２０１８年１０月１日出願の日本特許出願（特願２０１８－１８６９７４）に基づくものであり、その内容は本出願の中に参照として援用される。 This application is based on a Japanese patent application filed on October 1, 2018 (Japanese Patent Application No. 2018-186974), the contents of which are incorporated herein by reference.
１　内視鏡システム
２　内視鏡
３　光源装置
４　プロセッサユニット
５　吸引ポンプ
６　モニタ
１０　挿入部
１１　内視鏡操作部
１２　ユニバーサルコード
１３　コネクタ
１４　先端部
１５　湾曲部
１６　軟性部
１７　撮像部
１８Ａ　操作ボタン
１８Ｂ　操作ノブ
１８Ｃ　操作ボタン
２０　ライトガイド
２１　電気ケーブル
２２　操作ワイヤ
２３　処置具挿通チャンネル
２４　入口部分
２５　出口部分
３０　口金
３１　筒部
３２　フランジ部（第１フランジ部）
３３　座面
３４　フランジ部の長辺部
１００　内視鏡用処置具
１０１　穿刺針
１０２　シース（処置具軟性部）
１０３　処置具操作部
１１０　軸部
１１１　穿刺部
１１２　本体部
１１３　ハンドル
１１４　先端部
１２０　開口部
１２１　係合部
１２２　当接部
１３０　ロック部
１３１　ロックバー
１３２　バネ
２００　内視鏡用補助具
２０１　第１端部
２０２　第２端部
２０３　筒部
２１０　第１筒部材
２１１　第２筒部材
２２０　開口部
２２１　係合部
２２２　当接部
２３１　筒部
２３２　フランジ部（第２フランジ部）
２３３　座面
ＳＰ　シール箇所

  DESCRIPTION OF SYMBOLS 1 Endoscope system 2 Endoscope 3 Light source device 4 Processor unit 5 Suction pump 6 Monitor 10 Insertion section 11 Endoscope operation section 12 Universal cord 13 Connector 14 Tip section 15 Curved section 16 Flexible section 17 Imaging section 18A Operation button 18B Operation knob 18C Operation button 20 Light guide 21 Electric cable 22 Operation wire 23 Treatment tool insertion channel 24 Inlet part 25 Outlet part 30 Base 31 Tube part 32 Flange part (first flange part)
33 seat surface 34 long side portion 100 of flange portion treatment device 101 for endoscope puncture needle 102 sheath (soft treatment device portion)
103 treatment tool operation unit 110 shaft unit 111 puncture unit 112 main body unit 113 handle 114 distal end unit 120 opening 121 engaging unit 122 abutment unit 130 lock unit 131 lock bar 132 spring 200 endoscope auxiliary tool 201 first end 202 second end 203 cylindrical part 210 first cylindrical member 211 second cylindrical member 220 opening 221 engaging part 222 abutting part 231 cylindrical part 232 flange part (second flange part)
233 Seat SP Seal location

Claims (9)

  1. 　内視鏡操作部における処置具挿通チャンネルの入口部分に設けられており、前記処置具挿通チャンネルの軸方向にみた場合に非円形状に形成されたフランジ部を有する口金に固定可能な処置具操作部を備え、
    　前記処置具操作部は、
    　前記フランジ部と同一形状であり且つ前記フランジ部が挿通可能な開口部と、
    　前記フランジ部が前記開口部を通過した状態で前記処置具操作部が前記内視鏡操作部に対して前記処置具挿通チャンネルの中心軸回りに回転されることにより、前記フランジ部と係合する係合部と、
    　前記係合部が前記フランジ部と係合した状態で、前記内視鏡操作部における前記口金の周囲の座面に当接する当接部と、
    　を有する内視鏡用処置具。     A treatment tool operation is provided at the entrance of the treatment tool insertion channel in the endoscope operation section, and can be fixed to a mouthpiece having a flange formed in a non-circular shape when viewed in the axial direction of the treatment tool insertion channel. Part,
    The treatment tool operation unit includes:
    An opening having the same shape as the flange portion and through which the flange portion can be inserted,
    The treatment tool operation unit is rotated around the central axis of the treatment instrument insertion channel with respect to the endoscope operation unit in a state where the flange portion has passed through the opening, thereby engaging with the flange portion. An engagement portion;
    In the state where the engagement portion is engaged with the flange portion, a contact portion that comes into contact with a seat surface around the base in the endoscope operation portion,
    An endoscope treatment tool having:
  2. 　請求項１記載の内視鏡用処置具であって、
    　前記当接部の先端部は、弾性材料からなる内視鏡用処置具。     The treatment tool for an endoscope according to claim 1,
    The distal end of the contact portion is a treatment tool for an endoscope made of an elastic material.
  3. 　請求項１又は２記載の内視鏡用処置具であって、
    　前記処置具操作部は、前記係合部が前記フランジ部と係合した状態で前記処置具操作部の前記内視鏡操作部に対する前記中心軸回りの回転を阻止するロック部を有する内視鏡用処置具。     The treatment tool for an endoscope according to claim 1 or 2,
    An endoscope having a lock portion that prevents the treatment instrument operation portion from rotating around the central axis with respect to the endoscope operation portion in a state where the engagement portion is engaged with the flange portion; Treatment tool.
  4. 　内視鏡操作部の処置具挿通チャンネルの入口部分に設けられており、前記処置具挿通チャンネルの軸方向にみた場合に非円形状に形成された第１フランジ部を有する口金に固定可能な第１端部と、
    　前記第１フランジ部と同一の第２フランジ部を有し、請求項１から３のいずれか一項記載の内視鏡用処置具の前記処置具操作部が固定可能な第２端部と、
    　前記第１端部と前記第２端部とを連結しており、前記第２端部に固定された前記処置具操作部から延びる処置具軟性部を挿通可能な硬質な筒部と、
    　を備え、
    　前記第１端部は、
    　前記第１フランジ部と同一形状であり且つ前記第１フランジ部が挿通可能な開口部と、
    　前記第１フランジ部が前記開口部を通過した状態で前記第１端部が前記内視鏡操作部に対して前記処置具挿通チャンネルの中心軸回りに回転されることにより、前記第１フランジ部と係合する係合部と、
    　前記係合部が前記第１フランジ部と係合した状態で、前記内視鏡操作部における前記口金の周囲の座面に当接する当接部と、
    　を有する内視鏡用補助具。     The first end portion is provided at the entrance of the treatment instrument insertion channel of the endoscope operation section and can be fixed to a base having a first flange portion formed in a non-circular shape when viewed in the axial direction of the treatment instrument insertion channel. One end,
    A second end portion having the same second flange portion as the first flange portion, the second end portion being capable of fixing the treatment instrument operation section of the treatment tool for an endoscope according to any one of claims 1 to 3,
    A rigid cylindrical portion connecting the first end and the second end, and capable of inserting a treatment instrument flexible portion extending from the treatment instrument operation section fixed to the second end;
    With
    The first end is
    An opening having the same shape as the first flange portion and through which the first flange portion can be inserted;
    The first end portion is rotated around the central axis of the treatment instrument insertion channel with respect to the endoscope operation portion in a state where the first flange portion has passed through the opening, so that the first flange portion is formed. An engaging portion that engages with
    A contact portion that comes into contact with a seat surface around the base in the endoscope operation portion in a state where the engagement portion is engaged with the first flange portion;
    An endoscope aid having a.
  5. 　請求項４記載の内視鏡用補助具であって、
    　前記当接部の先端部は、弾性材料からなる内視鏡用補助具。     The endoscope auxiliary tool according to claim 4,
    A distal end of the contact portion is an endoscope auxiliary tool made of an elastic material.
  6. 　請求項４又は５記載の内視鏡用補助具であって、
    　前記第１端部は、前記係合部が前記フランジ部と係合した状態で前記第１端部の前記内視鏡操作部に対する前記中心軸回りの回転を阻止するロック部を有する内視鏡用補助具。     It is an endoscope auxiliary tool according to claim 4 or 5,
    The endoscope having a lock portion for preventing the first end portion from rotating around the central axis with respect to the endoscope operation portion in a state where the engagement portion is engaged with the flange portion. Aids.
  7. 　請求項４から６のいずれか一項記載の内視鏡用補助具であって、
    　前記筒部は、前記第１端部に接続されている第１筒部材と、前記第２端部に接続されている第２筒部材とを有し、
    　前記第２筒部材は、前記第１筒部材に対して前記筒部の軸方向に進退可能に、前記第１筒部材に嵌合している内視鏡用補助具。     An endoscope aid according to any one of claims 4 to 6,
    The cylinder has a first cylinder connected to the first end, and a second cylinder connected to the second end,
    The endoscope auxiliary tool, wherein the second cylindrical member is fitted to the first cylindrical member so as to be able to advance and retreat in the axial direction of the cylindrical portion with respect to the first cylindrical member.
  8. 　請求項７記載の内視鏡用補助具であって、
    　前記第２筒部材は、前記第１筒部材に対して前記筒部の中心軸回りに回転可能である内視鏡用補助具。     The endoscope aid according to claim 7,
    The endoscope auxiliary tool, wherein the second tubular member is rotatable around the central axis of the tubular portion with respect to the first tubular member.
  9. 　処置具挿通チャンネルの軸方向にみた場合に非円形状に形成されたフランジ部を有する口金が、内視鏡操作部における処置具挿通チャンネルの入口部分に設けられており、請求項１から３のいずれか一項記載の内視鏡用処置具の前記処置具操作部、又は請求項４から８のいずれか一項記載の内視鏡用補助具の前記第１端部が前記口金に固定可能な内視鏡。

          A mouthpiece having a flange portion formed in a non-circular shape when viewed in the axial direction of the treatment instrument insertion channel is provided at an entrance portion of the treatment instrument insertion channel in the endoscope operation section. The treatment instrument operating section of the treatment instrument for an endoscope according to any one of the claims, or the first end of the assisting tool for an endoscope according to any one of the claims 4 to 8 can be fixed to the base. Endoscope.

PCT/JP2019/038779 2018-10-01 2019-10-01 Treatment instrument for endoscope, assistive instrument for endoscope, and endoscope WO2020071378A1 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP3973844A1 (en) * 2020-09-23 2022-03-30 FUJIFILM Corporation Treatment tool device for endoscope and endoscope system

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JP2006187471A (en) * 2005-01-06 2006-07-20 Olympus Medical Systems Corp Treatment instrument for endoscope
JP2010264065A (en) * 2009-05-14 2010-11-25 Hoya Corp Puncture needle device for ultrasonic endoscope
JP2010264064A (en) * 2009-05-14 2010-11-25 Hoya Corp Puncture needle device for ultrasonic endoscope
JP2013085857A (en) * 2011-10-21 2013-05-13 Hoya Corp Puncture needle device for ultrasonic endoscope

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JP2006187471A (en) * 2005-01-06 2006-07-20 Olympus Medical Systems Corp Treatment instrument for endoscope
JP2010264065A (en) * 2009-05-14 2010-11-25 Hoya Corp Puncture needle device for ultrasonic endoscope
JP2010264064A (en) * 2009-05-14 2010-11-25 Hoya Corp Puncture needle device for ultrasonic endoscope
JP2013085857A (en) * 2011-10-21 2013-05-13 Hoya Corp Puncture needle device for ultrasonic endoscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3973844A1 (en) * 2020-09-23 2022-03-30 FUJIFILM Corporation Treatment tool device for endoscope and endoscope system
JP2022052257A (en) * 2020-09-23 2022-04-04 富士フイルム株式会社 Treatment instrument for endoscope, and endoscopic system

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