WO2015064616A1 - 内視鏡処置システム - Google Patents
内視鏡処置システム Download PDFInfo
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- WO2015064616A1 WO2015064616A1 PCT/JP2014/078718 JP2014078718W WO2015064616A1 WO 2015064616 A1 WO2015064616 A1 WO 2015064616A1 JP 2014078718 W JP2014078718 W JP 2014078718W WO 2015064616 A1 WO2015064616 A1 WO 2015064616A1
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- WIPO (PCT)
- Prior art keywords
- endoscope
- support
- distal end
- auxiliary tool
- axis
- Prior art date
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- 0 CCCC(C*)N=O Chemical compound CCCC(C*)N=O 0.000 description 4
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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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00087—Tools
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00089—Hoods
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00098—Deflecting means for inserted tools
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00101—Insertion part of the endoscope body characterised by distal tip features the distal tip features being detachable
-
- 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
- A61B1/00131—Accessories for endoscopes
- A61B1/0014—Fastening element for attaching accessories to the outside of an endoscope, e.g. clips, clamps or bands
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
-
- 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
- A61B1/005—Flexible endoscopes
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00269—Type of minimally invasive operation endoscopic mucosal resection EMR
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/00296—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means mounted on an endoscope
Definitions
- the present invention relates to an endoscope treatment system that is used together with a high-frequency knife to perform an incision treatment.
- an endoscope hood is attached as an endoscope auxiliary tool to the distal end portion of the insertion portion of the endoscope.
- the endoscope hood is provided with a substantially cylindrical transparent cap portion and a substantially cylindrical endoscope mounting portion.
- the endoscope mounting portion detachably fixes the endoscope hood to the distal end portion of the insertion portion of the endoscope.
- An endoscope locking portion projects from the distal end portion of the endoscope mounting portion toward the inside.
- a claw portion projects from the tip of the cap portion toward the inside.
- the endoscope treatment system described in Patent Document 1 configured as described above is pushed to a position where the distal end of the insertion portion of the endoscope hits the endoscope locking portion, whereby the insertion portion of the endoscope is inserted.
- the endoscope mounting portion of the endoscope hood is fixed to the tip of the insertion portion of the endoscope in a state where the tip does not enter the cap portion.
- the tip opening of the cap portion of the endoscope hood is pressed against the mucous membrane of the target mucosal resection part.
- the operator pushes out the snare wire in a state where the tip of the snare wire fed out from the snare sheath is in contact with the claw portion.
- the snare wire extends circumferentially along the inner peripheral surface of the distal end portion of the cap portion, and is disposed at the root of the excised portion where the mucous membrane is raised. Subsequently, the operator pulls the snare wire into the snare sheath and binds the root of the excised portion of the mucosa. Next, the operator excises the mucous membrane by energizing the snare wire with a high frequency.
- an endoscopic submucosal dissection in which a high-frequency knife is introduced into a body cavity through a channel formed in an insertion portion of an endoscope, and the lesioned mucosa is exfoliated using the high-frequency knife.
- ESD endoscopic submucosal dissection
- an operator introduces a syringe needle into a body cavity through a channel of the endoscope.
- the operator injects physiological saline into the submucosal layer of the lesioned mucosa using an injection needle to raise the lesioned mucosa.
- the operator wears a counter electrode plate on the patient, and introduces a high-frequency knife having a known needle-like electrode endoscopically. Subsequently, when the operator energizes the electrode, inserts the electrode around the lesioned mucosa, and moves the electrode laterally along the periphery of the lesioned mucosa, the submucosa around the lesioned mucosa is incised. Go.
- the present invention has been made in view of such circumstances, and an object thereof is to provide an endoscopic treatment system that can easily peel the submucosal layer from the muscle layer.
- the endoscope auxiliary tool attached to the distal end portion of the endoscope includes the first support portion extending along the longitudinal axis and the first support portion.
- a second support portion provided substantially parallel to the longitudinal axis, and provided at the distal ends of the first support portion and the second support portion, respectively, and more distal than the distal end portion of the endoscope
- the 1st protrusion part and the 2nd protrusion part which were distribute
- the endoscope aid has a tip portion connected to the first projecting portion, and the endoscope A first pressing portion that extends to the proximal end side of the auxiliary tool and has a proximal end portion attached to the insertion portion, and a distal end portion that is continuous with the second projecting portion, and extends to the proximal end side and has a proximal end portion A second pressing portion attached to the insertion portion.
- the endoscope auxiliary tool is attached to the first support part and the second support part, respectively.
- a plate-like member provided in a region not including the axis of the channel may be provided.
- the endoscope auxiliary tool in the endoscope auxiliary tool according to the first aspect, includes a proximal end portion of the first support portion and the second support portion.
- a connecting portion connected to each of the base end portions of the first supporting portion and the first supporting portion and the second supporting portion. You may provide the plate-shaped member arrange
- the plate-like member may be formed of a transparent material.
- an endoscope treatment system includes an endoscope having a flexible insertion portion and having a channel formed in a distal end surface of the insertion portion, and the insertion portion.
- An endoscope auxiliary tool attached to the distal end of the endoscope.
- the endoscope auxiliary tool is a first projecting portion disposed on the distal end side of the distal end surface of the insertion portion and sandwiching the axis of the channel in an orthogonal direction orthogonal to the axis of the insertion portion.
- the distal end portion When viewed in the orthogonal direction with the second projecting portion, the distal end portion is continuous with the first projecting portion, is inclined with respect to the axis of the insertion portion and extends toward the distal end surface side, and the proximal end portion is The first support part attached to the insertion part and the tip part are connected to the second projecting part, and the tip surface side is inclined to the same side as the first support part with respect to the axis of the insertion part. And a second support portion having a proximal end portion attached to the insertion portion.
- the submucosal layer can be easily detached from the muscle layer.
- the endoscope treatment system 1 of the present embodiment includes an endoscope 10 and an endoscope auxiliary tool 60.
- the endoscope 10 has a flexible insertion portion 20, and a channel 21 that opens at a distal end surface 22 a of the insertion portion 20 is formed.
- the endoscope auxiliary tool 60 is attached to the distal end portion of the insertion portion 20.
- the distal end portion of the insertion portion 20 in FIG. 1 is shown in a side view with a part omitted.
- the distal end portion of the insertion portion 20 in FIG. 2 is shown in a plan view. That is, as shown in FIG. 2, the light guide 26 described later is on the upper side, and the channel 21 is on the lower side.
- a surface viewed in an orthogonal direction D described later is called a side surface, and a surface viewed in the same direction as the direction shown in FIG.
- the endoscope 10 is a so-called direct-view type flexible device that can observe the front of the insertion portion 20.
- the endoscope 10 includes the elongated insertion portion 20 described above, an operation portion 40 provided at a proximal end portion of the insertion portion 20, and a universal cable 50 having one end portion attached to a side surface of the operation portion 40.
- the insertion portion 20 includes a distal end hard portion 22 provided at the distal end, a bending portion 23 that is attached to the proximal end portion of the distal end hard portion 22 and can be bent, and is attached to the proximal end portion of the bending portion 23 to provide flexibility. And a flexible tube portion 24.
- a light guide 26 formed of a bundle of optical fibers and an observation unit 27 are provided on the distal end surface 22a of the distal end rigid portion 22 so as to be exposed to the outside.
- the observation unit 27 has an objective lens (not shown) and a CCD (charge coupled device).
- the light guide 26 is inserted into the insertion portion 20 and the operation portion 40 and extends to the universal cable 50.
- the objective lens forms an image of the observation target in the visual field range R1 in front of the tip surface 22a on the light receiving surface of the CCD.
- the CCD converts the image of the observation target in the visual field range R1 into a signal representing the image, and transmits the converted signal to the signal wiring 28.
- the signal wiring 28 is inserted into the insertion unit 20 and the operation unit 40 and extends to the universal cable 50.
- the channel 21 is inserted into the insertion portion 20 and extends to the operation portion 40.
- the axis C1 of the channel 21 (hereinafter referred to as “first axis C1”) is parallel to the axis C2 of the insertion portion 20 (hereinafter referred to as “second axis C2”). .
- a plurality of bending pieces (not shown) are connected in the direction of the second axis C2.
- the distal end portion of the operation wire is attached to the bending piece on the most distal end side.
- the proximal end side of the operation wire is inserted into the flexible tube portion 24 and extends to the operation portion 40.
- the operation unit 40 is provided with an angle knob 41 and a switch 42 for pulling back and pushing the operation wire.
- the switch 42 is provided to operate a light source, a monitor, and a power source (not shown) which will be described later.
- the angle knob 41 By operating the angle knob 41, the operation wire can be operated to bend the bending portion 23 in a desired direction.
- a forceps port 43 communicating with the channel 21 is provided on the distal end side of the operation unit 40.
- a light source, a monitor, and a power source are connected to the end of the universal cable 50.
- the light source supplies illumination light to the base end face of the light guide 26.
- the monitor incorporates a signal processing circuit and is connected with a signal wiring 28.
- the signal transmitted through the signal wiring 28 is converted by the signal processing circuit, whereby an image within the visual field range R1 of the observation target acquired by the CCD is displayed on the monitor.
- the power supply supplies power to the CCD, light source, monitor, etc. of the observation unit 27.
- the endoscope auxiliary tool 60 includes a first projecting portion 61 and a second projecting portion 62 (hereinafter referred to as “projecting portions 61 and 62”), a first support portion 63 having a longitudinal axis, And a second support portion 64 (hereinafter referred to as “support portions 63, 64”) extending substantially parallel to the support portion 63.
- the first projecting portion 61 and the second projecting portion 62 are arranged on the distal end side of the endoscope auxiliary tool 60 with respect to the distal end surface 22a of the insertion portion 20.
- the first support portion 63 is formed in a rod shape and is arranged so that the tip is continuous with the first protrusion 61.
- the second support portion 64 is formed in a rod shape, and is arranged so that the tip is continuous with the second protrusion 62.
- the protrusions 61 and 62 of the present embodiment are bent portions obtained by bending the distal ends of the first support portion 63 and the second support portion 64, respectively. Since this bent portion is arranged on the distal side of the distal end portion of the endoscope and is positioned with respect to the distal end portion of the endoscope, the distal end portion of the endoscope is located between the submucosa P5 and the muscle layer P6. It is easy to sneak in. As shown in FIG.
- the projecting portions 61 and 62 are endoscopes. It arrange
- the protrusions 61 and 62 are arranged on the first axis C1 when viewed in the orthogonal direction D shown in FIG. Specifically, the tip portions of the first support portion 63 and the second support portion 64 sandwich the first axis C1 on the distal side of the tip portion of the endoscope, and the first support portion.
- first support portion 63 and the second support portion 64 of the present embodiment are positioned with respect to the distal end portion of the endoscope so as to be inclined with respect to the first axis C1.
- first support portion 63 and the second support portion 64 of the present embodiment are configured so that the proximal end portions of the first pressing portion 65 and the second pressing portion 66 (described later) connected to the protruding portions 61 and 62 are fixed fixtures.
- the first pressing portion 65 and the second pressing portion 66 support the protruding portions 61 and 62 at the distal end portion, and the first connecting portion that connects the protruding portions 61 and 62 and the fixture, and It functions as a second connecting part.
- the first support portion 63 is inclined about 45 °, for example, with respect to the second axis C2 and extends from the first protrusion 61 to the base end side. That is, the angle ⁇ 1 formed by the second axis C2 and the first support portion 63 on the base end side is about 45 °.
- the second support portion 64 is inclined to the same base end side as the first support portion 63 with respect to the second axis C2 when viewed in the orthogonal direction D perpendicular to the second axis C2, and the second protrusion portion. 62 extends proximally. That is, when viewed in the orthogonal direction D, the base end side of the first support portion 63 and the base end side of the second support portion 64 are in the same direction on the base end side with respect to the second axis C2. It is arranged at an angle.
- the support parts 63 and 64 overlap in the side view shown in FIG. 1, and are arranged so as to approach each other toward the distal end side of the endoscope auxiliary tool 60 in the plan view shown in FIG. Yes. That is, the endoscope auxiliary tool 60 is configured to be tapered as a whole in a plan view shown in FIG.
- the endoscope auxiliary tool 60 has a first pressing portion 65 and a second pressing portion 66 as shown in FIG.
- the first pressing portion 65 is arranged so that the distal end is connected to the first protruding portion 61 and extends from the first protruding portion 61 to the proximal end side.
- the second pressing portion 66 is arranged so that the distal end is connected to the second protruding portion 62 and extends from the second protruding portion 62 to the proximal end side. That is, the second pressing portion 66 is disposed so as to extend from the second protruding portion 62 to the proximal end side of the endoscope auxiliary tool 60.
- the endoscope auxiliary tool 60 includes two sets of a protruding portion, a supporting portion, and a pressing portion. Each of the support portions 63 and 64 and the pressing portions 65 and 66 is formed in a linear shape. In the plan view shown in FIG. 2, the holding portions 65 and 66 are disposed so as to approach each other toward the distal end side of the endoscope auxiliary tool 60.
- the first projecting portion 61, the first support portion 63, and the first pressing portion 65 are integrally formed by coating the outer surface of a stainless steel rod-shaped member with an insulating resin and bending it. ing.
- suppressing part 65 may be integrally molded with resin.
- the second protrusion 62, the second support part 64, and the second pressing part 66 are also formed in the same manner as the first protrusion 61, the first support part 63, and the first pressing part 65. Yes. As shown in FIGS.
- the proximal end portion of the first pressing portion 65 and the proximal end portion of the second pressing portion 66 are connected to the distal end hard portion 22 of the insertion portion 20 with a medical band B (fixing device or the like).
- the positioning part is attached.
- the endoscope auxiliary tool 60 is attached to the insertion portion 20 so that the protruding portions 61 and 62 are within the visual field range R1 of the observation unit 27. Between the first protrusion 61 and the second protrusion 62, between the first support part 63 and the second support part 64, and between the first pressing part 65 and the second pressing part 66. The separation distance is not less than the inner diameter of the channel 21. When viewed in the orthogonal direction D, the holding portions 65 and 66 are arranged at positions slightly shifted from the first axis C1.
- the endoscope treatment system 1 is used together with a high-frequency knife 200 having a treatment instrument insertion portion 210 that can be inserted into the channel 21.
- the high-frequency knife 200 has a known configuration and includes the above-described treatment instrument insertion portion 210 and a treatment instrument operation portion 220 provided at the base end portion of the treatment instrument insertion portion 210.
- a conductive operation wire (not shown) is inserted into the sheath 211 so as to be able to advance and retreat.
- a rod-like electrode 212 (see FIG. 3) is fixed to the tip of the operation wire.
- the electrode 212 extends along the longitudinal direction of the sheath 211. The operator can cause the electrode 212 to protrude from the distal end of the sheath 211 or accommodate the electrode 212 in the sheath 211 by moving the operation wire back and forth with respect to the sheath 211.
- the treatment instrument operation unit 220 includes a rod-shaped operation unit main body 221 fixed to the proximal end portion of the sheath 211 and a slider 222.
- the operation unit main body 221 includes a finger ring 221a at the base end.
- the slider 222 is provided to be slidable in the longitudinal direction of the operation unit main body 221 with respect to the operation unit main body 221.
- the slider 222 includes finger-hooking rings 222 a and 222 b arranged in a direction orthogonal to the longitudinal direction of the operation unit main body 221.
- the slider 222 includes a connection connector portion 223 to which a cord leading to a high frequency generator (not shown) is electrically connected.
- the connection connector portion 223 is electrically connected to the proximal end portion of the operation wire.
- an operator such as an operator attaches a counter electrode plate (not shown) to the patient.
- the operator attaches the endoscope auxiliary tool 60 to the insertion portion 20 with the medical band B.
- the operator activates the endoscope 10 by operating the switch 42 or the like, and supplies power from the power source to the CCD or the like of the observation unit 27.
- Illumination light emitted from the light source is supplied to the base end face of the light guide 26, and the illumination light guided to the light guide 26 is irradiated in front of the insertion portion 20.
- the operator introduces the insertion unit 20 into the body cavity from the patient's mouth or the like while observing the image acquired by the observation unit 27 of the endoscope 10 on the monitor.
- the operator operates the angle knob 41 as necessary to introduce the insertion portion 20 while curving the bending portion 23, and a lesion that is a target site to be excised in the body cavity of the distal end surface 22 a of the insertion portion 20. Opposite the mucosa.
- the operator introduces an injection needle (not shown) into the body cavity through the forceps port 43 and the channel 21 of the endoscope 10 while maintaining the position of the distal end surface 22a of the insertion portion 20 with respect to the lesioned mucosa. Subsequently, the operator uses a syringe needle to inject physiological saline into the submucosal layer of the lesioned mucosa portion P1 shown in FIG. 3 to raise the lesioned mucosa portion P1. Thereafter, the operator pulls out the injection needle from the channel 21.
- the operator holds the treatment instrument operation unit 220 through a finger through the ring 221a and the rings 222a and 222b.
- the operator moves (retracts) the slider 222 toward the proximal end side with respect to the operation unit main body 221 of the high-frequency knife 200 and accommodates the electrode 212 in the sheath 211.
- the operator introduces the treatment instrument insertion portion 210 of the high-frequency knife 200 into the channel 21 of the endoscope 10.
- the operator causes the treatment instrument insertion portion 210 to protrude from the distal end surface 22 a of the insertion portion 20. At this time, as shown in FIGS.
- the treatment instrument insertion portion 210 is disposed on the first axis C ⁇ b> 1 and between the first protrusion 61 and the second protrusion 62. Subsequently, the operator connects the cord of the high frequency generator to the connection connector portion 223 of the treatment instrument operation portion 220 and applies a high frequency voltage to the electrode 212 via the operation wire. The operator moves (pushes) the slider 222 toward the distal end side with respect to the operation portion main body 221, and causes the electrode 212 to protrude from the distal end of the sheath 211 as shown in FIG.
- the operator places the electrode 212 on the mucosal layer P2 around the lesioned mucosal part P1 and the submucosal layer (not shown).
- the operator moves the electrode 212 in a direction crossing the longitudinal direction of the electrode 212 by, for example, an operation of bending the bending portion 23, and incises the mucosal layer P2 and the like with the electrode 212 to form the opening P3.
- the operator pulls back the slider 222 with respect to the operation unit main body 221 and also pulls back the high-frequency knife 200 with respect to the endoscope 10 to house the treatment instrument insertion unit 210 in the channel 21.
- the operator pushes the insertion part 20 of the endoscope 10, thereby allowing the submucosal layer P5 and the muscle layer P6 between the lesion mucosa part P1 and the opening P3 to pass through the opening P3.
- the protrusions 61 and 62 are introduced between them.
- the holding portions 65 and 66 are positioned closer to the muscle layer P6 than the support portions 63 and 64 are. Since the muscle layer P6 is held by the pressing portions 65 and 66, the surgical field becomes almost flat.
- the support parts 63 and 64 and the pressing parts 65 and 66 are arranged so as to approach each other toward the distal end side of the endoscope auxiliary tool 60.
- the endoscope auxiliary tool 60 has a tapered shape as a whole, and the endoscope auxiliary tool 60 is easily introduced between the submucosal layer P5 and the muscle layer P6.
- the mucosal layer P2 and the submucosal layer P5 (hereinafter referred to as “lid portion P7”) separated from the muscle layer P6 on the lesion mucosa portion P1 side of the opening P3 are supported by the support portions 63 and 64. Since the lid part P7 is supported by the pair of support parts 63, 64, the space P (see FIG. 4) is located between the support parts 63, 64 and closer to the pressing parts 65, 66 than the support parts 63, 64. It can suppress that the cover part P7 enters.
- the endoscope auxiliary tool 60 can reliably support the lid portion P ⁇ b> 7 with the support portions 63 and 64.
- the lid P7 is supported by the support parts 63 and 64, so that the connection portion P8 between the lid P7 and the muscle layer P6 and the protrusions 61 and 62 arranged in the connection portion P8 can be reliably operated by the monitor. Can be recognized.
- the connection portion P8 is located so as to extend in the orthogonal direction D with respect to the endoscope auxiliary tool 60.
- the protrusions 61 and 62 are located on the most distal end side of the endoscope auxiliary tool 60, the protrusions 61 and 62 are disposed at a position near the connection portion P8.
- the operator pushes the high-frequency knife 200 into the endoscope 10 and pushes the slider 222 into the operation portion main body 221 to cause the electrode 212 to protrude again from the distal end surface 22a of the insertion portion 20.
- the treatment instrument insertion portion 210 is disposed on the first axis C1, the electrode 212 is fed forward on the first axis C1 and between the first protrusion 61 and the second protrusion 62. It is. That is, the endoscope auxiliary tool 60 does not hinder when the operator pushes the high-frequency knife 200.
- connection part P8 when the electrode 212 fed forward contacts the intermediate part between the part near the first protrusion 61 and the part near the second protrusion 62, the connection part P8 An incision is made.
- the endoscope auxiliary tool 60 swings together with the distal end hard portion 22 (shakes the neck).
- the endoscope auxiliary tool 60 swings in the orthogonal direction D
- the endoscope auxiliary tool 60 and the electrode 212 move (slide) in the orthogonal direction D with respect to the lid P7 and the muscle layer P6.
- the operator can perform the incision of the connecting portion P8 continuously and quickly. .
- the operator incises the connection portion P8 between the lid portion P7 and the muscle layer P6 while pushing the insertion portion 20 or bending the bending portion 23, and excises and peels all the lesion mucosa portion P1.
- the operator pulls back the slider 222 to house the electrode 212 in the sheath 211, and pulls out the high-frequency knife 200 from the channel 21 of the endoscope 10 to the proximal end side.
- the operator inserts grasping forceps (not shown) into the channel 21 and operates the grasping forceps to take out the lesion mucosa portion P1 through the channel 21.
- the operator pulls out the insertion portion 20 of the endoscope 10 from the patient's mouth, performs necessary treatments, and ends the series of treatments.
- the lid portion P7 is supported by the support portions 63 and 64, whereby the connection portion P8 between the lid portion P7 and the muscle layer P6 is formed.
- the operator can easily recognize it. Since the protrusions 61 and 62 are arranged so as to sandwich the first axis C1 in the orthogonal direction D, when the operator pushes the high-frequency knife 200 in which the treatment instrument insertion portion 210 is inserted into the channel 21, the electrode 212 is inserted. Passes between the first protrusion 61 and the second protrusion 62.
- connection part P8 the electrode 212 fed forward contacts the intermediate part between the part near the first protrusion 61 and the part near the second protrusion 62, and the operator Can easily peel the submucosa P5 from the muscle layer P6.
- the endoscope auxiliary tool 60 When the endoscope auxiliary tool 60 includes the pressing portions 65 and 66, the muscle layer P6 is held almost flat when the connection portion P8 is incised, and the procedure can be easily performed.
- the endoscope auxiliary tool 60 has a space between the first support portion 63 and the second support portion 64, a space between the first pressing portion 65 and the second pressing portion 66, and the like. Accordingly, it is easy to perform a procedure such as local injection or hemostasis through the space between them, and it is possible to prevent the smoke generated when the incision is made with the high-frequency knife 200 from being accumulated in the space V and difficult to observe by the observation unit 27. it can.
- the endoscope auxiliary tool includes two sets of the protruding portion, the support portion, and the pressing portion.
- the endoscope auxiliary tool includes three sets of the protruding portion, the supporting portion, and the pressing portion. You may comprise so that it may provide above.
- the endoscope auxiliary tool 70 has both first end portions 61 and first end portions. You may provide the 1st connection part 71 connected with the holding
- the endoscope auxiliary tool 70 also includes a second connecting portion whose both ends are connected to the second projecting portion 62 and the second pressing portion 66, respectively. The first connecting portion 71 and the second connecting portion are disposed in parallel to the distal end surface 22 a of the insertion portion 20.
- the protrusion parts 61 and 62 are distribute
- FIG. 7 is a partial cross-sectional view of the side surface of the distal end portion in the endoscope treatment system according to the second modification of the first embodiment of the present invention.
- the endoscope auxiliary tool 75 instead of the holding portions 65 and 66 of the endoscope auxiliary tool 60, the endoscope auxiliary tool 75 includes a first connecting portion 76 and a second connecting portion (non- May be provided.
- the first connecting portion 76 is arranged so that the distal end portion is connected to the proximal end portion of the first support portion 63 and extends to the proximal end side of the endoscope auxiliary tool 75.
- the second connection portion is arranged so that the distal end portion is connected to the proximal end portion of the second support portion 64 and extends to the proximal end side of the endoscope auxiliary tool 75.
- the support portions 63 and 64 are bent so as to be inclined with respect to the axial direction of the first connecting portion 76 and / or the second connecting portion, and are more distal than the distal end of the endoscope.
- the first connecting portion 76 and the second connecting portion are attached to and positioned at the distal end portion of the endoscope by a fixture (positioning portion) so as to be inclined with respect to the axial direction of the endoscope (channel).
- first support portion 63 and the second support portion 64 sandwich the first axis C1 on the distal side of the distal end portion of the endoscope, and the first support portion 63 and the second support portion 64
- the first connecting portion with respect to the distal end portion of the endoscope so as to incline radially outward of the distal end portion of the endoscope from the distal end portion of the second support portion 64 toward the distal end portion of the endoscope. It is positioned by a fixture (positioning part) via 76 and the second connecting part.
- the distal ends of the support portions 63 and 64 of the present modified example allow the distal end portion of the endoscope to enter between the submucosa P5 and the muscle layer P6. It can be configured to be easy.
- the proximal end portion of the first connecting portion 76 and the proximal end portion of the second connecting portion are attached to the distal end hard portion 22 of the insertion portion 20 with a medical band B or the like.
- the endoscope treatment system 1B including the endoscope auxiliary tool 75 according to the modified example configured as described above can achieve the same effects as those of the endoscope treatment system 1 according to the present embodiment.
- the endoscope auxiliary tool 75 of this modification may be configured such that the base end portions of the support portions 63 and 64 are directly attached to the distal end hard portion 22 of the insertion portion 20 without providing both connecting portions. Good.
- the endoscope treatment system 2 includes an endoscope auxiliary tool 80 instead of the endoscope auxiliary tool 60 of the endoscope treatment system 1 according to the first embodiment.
- the endoscope auxiliary tool 80 includes a connecting portion 81 and a plate-like member 82 in addition to the components of the endoscope auxiliary tool 60.
- the connecting portion 81 is connected to the base end portion of the first support portion 63 and the base end portion of the second support portion 64, respectively.
- the plate-like member 82 is rotatably supported by the connecting portion 81.
- the support portions 63 and 64 are formed so as to be parallel to each other, but the support portions 63 and 64 approach each other toward the distal end side of the endoscope auxiliary tool 80. It may be formed.
- the holding portions 65 and 66 That is, in FIG. 8 and FIG. 9 described later, the pressing portions 65 and 66 are formed so as to be parallel to each other, but the pressing portions 65 and 66 approach toward the distal end side of the endoscope auxiliary tool 80. It may be formed as follows.
- the connecting portion 81 can be configured by coating a stainless steel rod-shaped member with a resin.
- the protruding portions 61 and 62, the supporting portions 63 and 64, the pressing portions 65 and 66, and the connecting portion 81 are integrally formed.
- the plate-like member 82 is formed in a rectangular plate shape with a known resin having biocompatibility such as ABS (Acrylonitrile Butadiene Styrene) resin.
- the plate-like member 82 is preferably formed of a transparent material.
- a pair of through-holes 82 a are formed at the edge of the plate-like member 82 at intervals along the edge.
- the plate-like member 82 is disposed on the distal end side of the endoscope auxiliary tool 80 with respect to the support portions 63 and 64 and the connecting portion 81.
- the thread 83 inserted through the through hole 82 a in the plate-like member 82 is tied to the connecting portion 81.
- the position of the plate-like member 82 with respect to the support portions 63, 64 is defined as the normal position when the base-side surface of the plate-like member 82 contacts the support portions 63, 64.
- the first axis C1 intersects the surface on the proximal end side of the plate-like member 82 at the point G.
- the plate-like member 82 in the normal position is disposed at a position that prevents the progress of the treatment instrument inserted through the channel 21 along the first axis C1.
- the endoscope treatment system 2 configured in this way, when the plate-like member 82 is in the normal position, and the lid portion P7 pushes the surface on the distal end side of the plate-like member 82 toward the proximal end side, the plate-like member 82 is supported by the support portions 63 and 64 and the connecting portion 81. Thereby, the endoscope treatment system 2 can more reliably support the lid portion P7 with the endoscope auxiliary tool 80. Since the plate-like member 82 is formed of a transparent material, the operator can observe the state ahead of the plate-like member 82 through the plate-like member 82 by the observation unit 27.
- the electrode 212 contacts the plate-like member 82 at point G.
- the electrode 212 pushes the plate-like member 82 toward the distal end, whereby the plate-like member 82 rotates around the connecting portion 81, and the electrode 212 is moved forward of the plate-like member 82. Can be moved to.
- the operator can easily peel the submucosal layer P5 from the muscle layer P6.
- the plate-like member 82 is rotatably supported with respect to the connecting portion 81, but is not limited thereto.
- the plate-like member may be rotatably supported by the connecting portion 81 by bending the end portion of the plate-like member into a tubular shape and inserting the connecting portion 81 into the pipe.
- a plate-like member 82 is attached to the support portions 63 and 64 and the connecting portion 81 with an adhesive (not shown) or the like, like an endoscope auxiliary tool 85 shown in FIG.
- You may comprise as follows.
- the plate-like member 82 is provided in a region that does not include the first axis C1. That is, the plate-like member 82 is disposed at a position that does not hinder the progress of the treatment instrument.
- the lid portion P7 pushes the surface on the distal end side of the plate-like member 82
- the plate-like member 82 is supported by the support portions 63 and 64 and the connecting portion 81.
- the electrode 212 passes through the protruding portions 61 and 62 rather than the plate-like member 82 and is ahead of the plate-like member 82. Move to.
- the electrode 212 allows the operator to easily peel the submucosal layer P5 from the muscle layer P6.
- the plate-like member 82 is provided in a region between the first support portion 63 and the second support portion 64 and does not include the first axis C1.
- the observation unit 27 can observe between the protrusion 61 and the second protrusion 62. Therefore, the plate-like member 82 may be formed of an opaque material.
- the endoscope auxiliary tool 85 may not be provided with the connecting portion 81 and the plate-like member 82 may be attached only to the support portions 63 and 64.
- the endoscope auxiliary tool 90 includes a mounting member 91, side plates 92 and 93, and a connecting member 94.
- the attachment portion 91 has a cylindrical shape and is detachably disposed on the distal end hard portion 22 of the insertion portion 20 of the endoscope 10.
- the side plates 92 and 93 are arranged in front of the attachment member 91 so as to sandwich the first axis C1 in the orthogonal direction D.
- the connecting member 94 connects the side plates 92 and 93 and the mounting member 91.
- the inner diameter of the attachment member 91 is slightly larger than the outer diameter of the distal end hard portion 22.
- the distance between the side plates 92 and 93 is equal to the inner diameter of the channel 21.
- the connecting member 94 is formed in an arc shape in which a cross-sectional shape orthogonal to the first axis C1 is convex in a direction away from the first axis C1.
- the attachment member 91, the side plates 92 and 93, and the connecting member 94 are integrally formed of a resin having insulating properties and biocompatibility such as silicon and PTFE (polytetrafluoroethylene).
- the end of the side plate 92 and the end on the connecting member 94 side is the first protruding portion 92a
- the end of the side plate 93 and the end on the connecting member 94 side is the second protruding portion 93a.
- the edge portion that extends from the first protrusion 92 a of the side plate 92 to the base end side is the first support portion 92 b
- the edge portion that extends from the second protrusion 93 a of the side plate 93 to the base end side. Is the second support portion 93b.
- the endoscope auxiliary tool 90 configured as described above is attached to the distal end rigid portion 22 of the endoscope 10, the first support portion 92b, the second support portion 93b, and the connecting member 94 are covered with each other.
- the part P7 is supported.
- the electrode 212 passes between the side plate 92 and the side plate 93, and the high-frequency knife 200 is in front of the side plates 92 and 93. Move to.
- the endoscope auxiliary tool 100 includes the above-described mounting member 91, the flap 101, and connecting members 102 and 103.
- the flap 101 is plate-shaped and is disposed on the distal end side with respect to the attachment member 91.
- the connecting members 102 and 103 are rod-shaped and connect the flap 101 and the attachment member 91.
- the flap 101 and the connecting members 102 and 103 can be configured using the same material as the attachment member 91 and the first protrusion 61, respectively.
- the connecting portion between the flap 101 and the connecting members 102 and 103 and the connecting portion between the connecting members 102 and 103 and the attachment member 91 are fixed by a known adhesive.
- the flap 101 is fixed to the attachment member 91 by the connecting members 102 and 103.
- the front end portion of the flap 101 and the end portions in the width direction are the first projecting portion 101a and the second projecting portion 101b.
- An edge portion that extends from the first protrusion 101a of the flap 101 to the proximal end side is the first support portion 101c
- an edge portion that extends from the second protrusion 101b to the proximal end side is the second support portion 101c.
- the support portion 101d When the attachment member 91 is attached to the insertion portion 20 of the endoscope 10, the angle ⁇ 3 formed by the second axis C2 and the support portions 101c and 101d is about 45 °.
- connection structure 106 can be constituted by, for example, a hole formed in the side surface of the attachment member 91 and a hook formed in the base end portion of the coupling members 102 and 103 and inserted through the hole.
- the distal end portions of the pulling wires 107 are connected to intermediate portions in the longitudinal direction of the connecting members 102 and 103, respectively.
- the pulling wire 107 extends to the proximal end side of the endoscope auxiliary tool 105.
- the operator can adjust the aforementioned angle ⁇ 3 by moving the flap 101 by pulling back and pushing the pair of pulling wires 107. That is, when the operator pushes the high-frequency knife 200 with the treatment instrument insertion portion 210 inserted into the channel 21, the electrode 212 does not pass between the first protrusion 101a and the second protrusion 101b. It is. Subsequently, the operator can adjust the aforementioned angle ⁇ 3 by moving the flap 101 so that the electrode 212 passes between the first protrusion 101a and the second protrusion 101b.
- An endoscope auxiliary tool 110 includes the above-described mounting member 91, side plates 111 and 112, and a connecting member 113.
- the side plates 111 and 112 are arranged in front of the attachment member 91 so as to sandwich the first axis C1 in the orthogonal direction D.
- the connecting member 113 connects the side plates 111 and 112 and the mounting member 91.
- the edge portion 111a of the side plate 111 and the edge portion 112a of the side plate 112 are inclined so as to approach each other toward the outer peripheral surface of the mounting member 91 toward the base end side.
- the distance between the side plates 111 and 112 is equal to the inner diameter of the channel 21.
- the connecting member 113 is formed in an arc shape in which a cross-sectional shape orthogonal to the first axis C1 is convex in a direction away from the first axis C1.
- the attachment member 91, the side plates 111 and 112, and the connecting member 113 are integrally formed of the same material as the endoscope auxiliary tool 90 described above.
- the operator attaches the endoscope auxiliary tool 110 thus configured to the distal end hard portion 22 of the endoscope 10, and introduces the side plates 111 and 112 between the submucosa P5 and the muscle layer P6 through the opening P3. .
- the side plates 111 and 112 act to lift the lesioned mucosa portion P1 from the muscle layer P6.
- the electrode 212 passes between the side plate 111 and the side plate 112 and moves forward relative to the side plates 111 and 112.
- the endoscope auxiliary tool 115 includes the above-described mounting member 91 and a bar 116 connected to opposing edges at the distal end portion of the mounting member 91. I have.
- the endoscope treatment system 4 is configured by the endoscope auxiliary tool 115 and the endoscope 10.
- the bar 116 is curved so as to be convex toward the distal end side of the endoscope auxiliary tool 115. In order not to disturb the visual field range R1 of the observation unit 27, it is preferable that the outer diameter of the bar 116 is narrow.
- the bar 116 can be formed of the same material as the attachment member 91 or can be configured using the same material as the first protrusion 61. For example, the strength of the bar 116 can be increased by using a bar member made of stainless steel, which is the same material as the first protruding portion 61, as a reinforcing material.
- the bar 116 is preferably arranged between the channel 21 and the observation unit 27 in a front view when the attachment member 91 is attached to the insertion portion 20 of the endoscope 10.
- the operator When performing a procedure using the endoscope treatment system 4 configured as described above, the operator places the channel 21 closer to the muscle layer P6 than the observation unit 27 of the endoscope 10, and FIG. And as shown in FIG. 17, the cover part P7 is supported by the observation unit 27 side of the bar
- An endoscope auxiliary tool 120 includes an endoscope auxiliary tool at the center in the longitudinal direction of the bar 116 in addition to the components of the endoscope auxiliary tool 115 described above.
- a protrusion 121 protruding toward the front end side of 120 is provided.
- the protrusion 121 can be formed by, for example, curving the central portion of the bar-shaped member constituting the bar 116 toward the distal end side.
- An endoscope auxiliary tool 125 according to a second modification of the fourth embodiment of the present invention shown in FIG. 20 is replaced with a bar 116 of the endoscope auxiliary tool 115 according to the present embodiment at the distal end portion of the attachment member 91.
- a protrusion 126 protruding toward the distal end side of the endoscope auxiliary tool 125 is provided at the edge. Even if the endoscope assisting tool 125 is configured in this way, the lid P7 is hung on the protrusion 126 in the same manner as the endoscope assisting tool 120 of the first modified example of the fourth embodiment of the present invention described above.
- the lid 126 can be reliably raised by the protrusion 126.
- the endoscope auxiliary tool 130 of the third modified example of the fourth embodiment of the present invention shown in FIG. 21 is formed on the protrusion 126 of the endoscope auxiliary tool 125 of the second modified example of the fourth embodiment of the present invention described above. Instead, a recessed portion 131 that is recessed from the edge portion at the distal end portion of the attachment member 91 toward the proximal end side of the endoscope auxiliary tool 130 is provided.
- the recess 131 penetrates the side wall of the endoscope auxiliary tool 130 in the thickness direction. Even if the endoscope auxiliary tool 130 is configured in this way, the lid portion P7 is hung on the recess 131 like the endoscope auxiliary tool 125 of the second modification of the fourth embodiment of the present invention described above.
- the lid P7 can be reliably raised by the recess 131.
- the support shaft 137 fixed to the bent portion of the L-shaped hook member 136 is provided on the outer peripheral surface of the mounting member 91. It is rotatably supported on the tip side.
- a pair of the hook member 136 and the support shaft 137 are provided on the outer peripheral surface of the attachment member 91 at positions opposite to each other across the axis of the attachment member 91 (one support shaft 137 is not shown).
- the end portion of the bar 116 is fixed to one end portion of each hook member 136.
- the tip end portion of the pulling wire 138 is connected to the other end portion of each hook member 136.
- the pulling wire 138 extends to the proximal end side of the endoscope auxiliary tool 135.
- the distal end portion of the sheath 139 through which the pulling wire 138 is inserted is fixed to the attachment member 91.
- a known forceps 141 is supported on the outer peripheral surface of the attachment member 91 by a support member 142 so as to advance and retreat in the axial direction of the attachment member 91.
- the operator pushes the pulling wire 138 as shown in FIG. It is arranged at the position.
- the puller wire 138 may be operated by an assistant. As described above, the burden on the operator can be reduced by sharing the part of the operation of the endoscope treatment system 4B by the assistant.
- each hook member 136 rotates around the support shaft 137 as shown in FIG. 116 moves, and the lid part P ⁇ b> 7 rises in front of the forceps 141.
- the operator pushes the forceps 141 and grips the distal end portion of the lid portion P7 with the pair of gripping pieces 141a.
- the operator pushes the high-frequency knife 200 in which the treatment instrument insertion portion 210 is inserted into the channel 21, and peels off the connection portion P8 between the lid portion P7 and the muscle layer P6 with the electrode 212.
- the peeling progresses, the operator can continuously peel even if the lesioned mucosa portion P1 is large by pushing the forceps 141 holding the lid P7.
- the first to fourth embodiments of the present invention have been described in detail with reference to the drawings.
- the specific configuration is not limited to this embodiment, and the configuration does not depart from the gist of the present invention. Changes, combinations, deletions, etc. are also included.
- each of the configurations shown in each embodiment can be used in appropriate combination.
- the endoscope auxiliary tool is fixed to the insertion portion 20 by attaching the base end portions of the pressing portions 65 and 66 to the insertion portion 20 with the medical band B.
- the endoscope auxiliary tool is fixed to the insertion portion 20 by attaching the base end portions of the pressing portions 65 and 66 to the insertion portion 20 with the medical band B.
- the endoscope auxiliary tool is attached to the insertion portion 20 by fixing the proximal end portions of the pressing portions 65 and 66 to the cylindrical attachment member that can be attached to and detached from the distal end hard portion 22 of the insertion portion 20 with an adhesive or the like.
- You may comprise as follows.
- the support portions 63 and 64 are disposed so as to approach each other toward the distal end side of the endoscope auxiliary tool in plan view.
- the support parts 63 and 64 may be arranged so as to be parallel to each other. With such a configuration, the distance between the support portions 63 and 64 does not change regardless of the positions of the support portions 63 and 64 in the longitudinal direction. Therefore, the cover part P7 can be reliably supported by the support parts 63 and 64.
- the support parts 63 and 64 may be arranged so as to be separated (become widened) toward the distal end side of the endoscope auxiliary tool in plan view.
- the holding portions 65 and 66 may be arranged so as to be parallel to each other, or may be arranged so as to be separated from each other toward the distal end side of the endoscope auxiliary tool in plan view.
- the support parts 63 and 64 and the pressing parts 65 and 66 may be arranged symmetrically (line symmetric) with respect to the first axis C1 or arranged asymmetrically. May be. It has been described that the protrusions 61 and 62 are arranged on the first axis C1 when viewed in the orthogonal direction D. However, the positions at which the protrusions 61 and 62 are disposed are not limited to this, and the protrusions 61 and 62 may be disposed at positions shifted from the first axis C1.
- Each of the above embodiments can provide an endoscopic treatment system that can easily peel the submucosal layer from the muscle layer.
- Endoscope 20 Insertion section 21 Channel 22a End face 60, 70, 75, 80, 85, 90, 100, 105, 110, 115, 120, 125, 130, 135 Endoscope auxiliary tool 61, 92a, 101a First protrusion 62, 93a, 101b Second protrusion 63, 92b, 101c First support part 64, 93b, 101d Second Supporting portion 65 First pressing portion 66 Second pressing portion 81 Connecting portion 82 Plate member C1 Channel axis (first axis) C2 Insertion axis (second axis)
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Abstract
Description
例えば、特許文献1に記載された内視鏡処置システムでは、内視鏡の挿入部の先端部に内視鏡補助具として内視鏡用フードが取付けられている。内視鏡用フードには、略円筒状の透明なキャップ部と、略円筒状の内視鏡装着部とが設けられている。内視鏡装着部は、内視鏡用フードを内視鏡の挿入部の先端部に着脱可能に固定する。
内視鏡装着部の先端部には、内部側に向けて内視鏡係止部が突設されている。キャップ部の先端部には、爪部が内部側に向けて突設されている。
操作者は、スネアシースから繰り出したスネアワイヤの先端部を爪部に当てた状態で、スネアワイヤを押し出す。スネアワイヤは、キャップ部の先端部の内周面に沿って円周上に広がり、粘膜の盛り上がった切除部分の根本に配置される。
続いて、操作者は、スネアワイヤをスネアシースに引き込み、粘膜の切除部分の根元を緊縛する。次に、操作者は、スネアワイヤに高周波を通電することで、粘膜を切除する。
この内視鏡的粘膜下層剥離術では、例えば、操作者は、内視鏡のチャンネルを通して径内視鏡的に注射針を体腔内に導入する。続いて、操作者は、注射針を用いて病変粘膜部分の粘膜下層に生理食塩水を注入して、その病変粘膜部分を隆起させる。さらに、操作者は、対極板を患者に装着し、公知の針状の電極を有する高周波ナイフを径内視鏡的に導入する。続いて、操作者が、電極に通電し、病変粘膜部分の周囲に電極を差し、電極を病変粘膜部分の周囲に沿って横方向に動かすと、病変粘膜部分の周囲の粘膜下層が切開されていく。
操作者は、切開した粘膜下層と筋層との間に内視鏡用フードを挿入することで、切開した粘膜下層と筋層とを離間させた状態で保持する。操作者は、内視鏡のチャンネルを通して導入した高周波ナイフで粘膜下層と筋層との接続部分を切開し、粘膜下層を筋層から剥離する。
以下、本発明に係る内視鏡処置システムの第1実施形態を、図1から図7を参照しながら説明する。なお、以下の全ての図面においては、図面を見やすくするため、各構成要素の寸法の比率は適宜異ならせてある。
図1および図2に示すように、本実施形態の内視鏡処置システム1は、内視鏡10と、内視鏡補助具60とを備えている。内視鏡10は、可撓性の挿入部20を有し、挿入部20の先端面22aに開口するチャンネル21が形成されている。内視鏡補助具60は、挿入部20の先端部に取付けられている。
図1における挿入部20の先端部は、一部を省略した側面図で示されている。図2における挿入部20の先端部は、平面図で示されている。すなわち、図2に示すように、後述するライトガイド26が上側にあり、チャンネル21が下側にある。以下の全ての図面において、図1のように、後述する直交方向Dに見る面を側面といい、図2に示す方向と同じ方向に見る面を平面という。
挿入部20は、先端に設けられた先端硬質部22と、先端硬質部22の基端部に取付けられ湾曲操作可能な湾曲部23と、湾曲部23の基端部に取付けられ可撓性を有する可撓管部24とを有している。
ライトガイド26は、挿入部20および操作部40内に挿通され、ユニバーサルケーブル50まで延びている。対物レンズは、先端面22aの前方の視野範囲R1内の観察対象の像をCCDの受光面上に結像させる。CCDは、視野範囲R1内の観察対象の像を画像で表す信号に変換し、変換した信号を信号配線28に送信する。信号配線28は、挿入部20および操作部40内に挿通され、ユニバーサルケーブル50まで延びている。
チャンネル21は、挿入部20内に挿通されて操作部40まで延びている。挿入部20の先端側において、チャンネル21の軸線C1(以下、「第一の軸線C1」と称する)は挿入部20の軸線C2(以下、「第二の軸線C2」と称する)に平行である。
操作部40の先端側には、チャンネル21に連通する鉗子口43が設けられている。
ユニバーサルケーブル50の端部には、光源、モニタ、および電源が接続されている。光源は、ライトガイド26の基端面に照明光を供給する。モニタには、信号処理回路が内蔵され、信号配線28が接続されている。信号配線28を通して送信された信号は信号処理回路で変換されることにより、CCDが取得した観察対象の視野範囲R1内の画像がモニタに表示される。
電源は、観察ユニット27のCCD、光源、モニタなどに電力を供給する。
図2に示すように、さらに、第二の軸線C2に直交する直交方向Dにおいて、突出部61、62(第一の支持部63および第二の支持部64の先端部)は、内視鏡の先端部よりも遠位側で第一の軸線C1を挟むように配されている。この実施形態では、図1に示す直交方向Dに見たときに、突出部61、62は、第一の軸線C1上に配されている。具体的には、第一の支持部63および第二の支持部64の先端部が内視鏡の先端部よりも遠位側で第一の軸線C1を挟んでおり、且つ第一の支持部63および第二の支持部64の先端部から内視鏡の先端部に向かうに連れて内視鏡の先端部の径方向外方に傾斜するように内視鏡の先端部に対して位置決めされる。その結果、本実施形態の第一の支持部63および第二の支持部64は、第一の軸線C1に対して傾斜するように内視鏡の先端部に対して位置決めされる。例えば、本実施形態の第一の支持部63および第二の支持部64は、突出部61、62と連なる後述する第一の押さえ部65および第二の押さえ部66の基端部が固定具(位置決め部)によって内視鏡先端部に取り付けられることで位置決めされる。この場合、第一の押さえ部65および第二の押さえ部66は、突出部61、62を先端部で支持しており、突出部61、62と固定具とを連結する第一の連結部および第二の連結部として機能している。第一の支持部63は、第二の軸線C2に対して例えば45°程度傾いて第一の突出部61から基端側に延びている。すなわち、第二の軸線C2と第一の支持部63とが基端側になす角度θ1は45°程度である。
第二の支持部64は、第二の軸線C2に直交する直交方向Dにみたとき、第二の軸線C2に対して第一の支持部63と同じ基端側に傾いて第二の突出部62から基端側に延びている。すなわち、直交方向Dに見たときに、第一の支持部63の基端側と第二の支持部64の基端側とは、第二の軸線C2に対して基端側に同じ向きに傾斜して配置されている。
この実施形態では、支持部63、64は、図1に示す側面視において重なっていて、図2に示す平面視において内視鏡補助具60の先端側に向かうにしたがって互いに近づくように配置されている。すなわち、図2に示す平面視において内視鏡補助具60全体として先細りとなるように構成されている。
第一の突出部61と第二の突出部62との間、第一の支持部63と第二の支持部64との間、および第一の押さえ部65と第二の押さえ部66との離間距離は、チャンネル21の内径以上である。直交方向Dに見たときに、押さえ部65、66は、第一の軸線C1からわずかにずれた位置に配されている。
高周波ナイフ200は、公知の構成を有し、前述の処置具挿入部210と、この処置具挿入部210の基端部に設けられた処置具操作部220とを備えている。
処置具挿入部210では、シース211内に導電性の図示しない操作ワイヤが進退可能に挿通されている。操作ワイヤの先端部には棒状の電極212(図3参照)が固定されている。電極212は、シース211の長手方向に沿って延びている。操作者は、シース211に対して操作ワイヤを進退させることで、シース211の先端から電極212を突出させたり、シース211内に電極212を収容させたりすることができる。
スライダ222は、指掛け用のリング222a、222bを操作部本体221の長手方向に対して直交する方向に並べて備えている。スライダ222は、図示しない高周波発生装置に通じるコードが電気的に接続される接続コネクタ部223を備えている。
接続コネクタ部223は、操作ワイヤの基端部に電気的に接続されている。
まず、術者などの操作者は、患者に対極板(図示せず)を装着する。操作者は、挿入部20に内視鏡補助具60を医療用バンドBで取付けておく。続いて、操作者は、スイッチ42を操作することなどにより内視鏡10を起動させて、電源から観察ユニット27のCCDなどに電力を供給する。光源が発した照明光がライトガイド26の基端面に供給され、ライトガイド26に導かれた照明光は挿入部20の前方に照射される。操作者は、内視鏡10の観察ユニット27で取得した画像をモニタで観察しつつ、挿入部20を患者の口などから体腔内に導入する。
操作者は、必要に応じてアングルノブ41を操作して湾曲部23を湾曲させながら挿入部20を導入していき、挿入部20の先端面22aを体腔内における切除すべき目的部位である病変粘膜部分に対向させる。
操作者は、挿入部20の先端面22aから処置具挿入部210を突出させる。このとき、図2および図4に示すように、処置具挿入部210は第一の軸線C1上であって、第一の突出部61と第二の突出部62との間に配される。続いて、操作者は、処置具操作部220の接続コネクタ部223に高周波発生装置のコードを接続し、操作ワイヤを介して電極212に高周波電圧を印加する。
操作者は、操作部本体221に対してスライダ222を先端側に移動させ(押し込み)、図3に示すようにシース211の先端から電極212を突出させる。
続いて、操作者は、病変粘膜部分P1の周囲の粘膜層P2および不図示の粘膜下層に、電極212を差す。操作者は、湾曲部23を湾曲させる操作などにより、電極212の長手方向に交差する方向に電極212を移動させ、粘膜層P2などを電極212により切開し、開口P3を形成する。
続いて、操作者は、操作部本体221に対してスライダ222を引き戻すとともに、内視鏡10に対して高周波ナイフ200を引き戻し、チャンネル21内に処置具挿入部210を収容しておく。
開口P3よりも病変粘膜部分P1側における筋層P6から剥離された粘膜層P2および粘膜下層P5(以下、「蓋部P7」と称する)は、支持部63、64により支持される。蓋部P7が一対の支持部63、64で支持されることで、支持部63、64の間であって支持部63、64よりも押さえ部65、66側の空間V(図4参照)に蓋部P7が入るのを抑制することができる。蓋部P7が支持部63、64に接触すれば蓋部P7が支持部63、64で支持される。そのため、蓋部P7が支持部63、64で支持された場合に、蓋部P7の支持部63、64に沿う方向における長さが支持部63、64の長さに比べて短い場合であっても、内視鏡補助具60は、蓋部P7を支持部63、64で確実に支持することができる。
蓋部P7が支持部63、64に支持されることで、蓋部P7と筋層P6との接続部分P8、およびこの接続部分P8に配された突出部61、62をモニタで確実に操作者が認識することができる。接続部分P8は、内視鏡補助具60に対して直交方向Dに延びるように位置している。
操作者は、内視鏡10に対して高周波ナイフ200を押し込むとともに、操作部本体221に対してスライダ222を押し込み、挿入部20の先端面22aから再び電極212を突出させる。
処置具挿入部210は第一の軸線C1上に配されるため、電極212は第一の軸線C1上であって第一の突出部61と第二の突出部62との間を通して前方に送り出される。すなわち、内視鏡補助具60は、操作者が高周波ナイフ200を押し込むときに支障とはならない。
操作者が湾曲部23を湾曲させると、先端硬質部22とともに内視鏡補助具60も揺動する(首を振る)。内視鏡補助具60が直交方向Dに揺動したときには、蓋部P7や筋層P6に対して内視鏡補助具60や電極212が直交方向Dに移動する(滑る)。このように、操作者は、蓋部P7を支持した状態で内視鏡補助具60を直交方向Dに揺動させることができるため、接続部分P8の切開を連続的かつ速やかに行うことができる。
続いて、操作者は、挿入部20を押し込んだり湾曲部23を湾曲させたりしながら蓋部P7と筋層P6との接続部分P8を切開し、病変粘膜部分P1を全て切除して剥離させる。
最後に、操作者は、患者の口から内視鏡10の挿入部20を引き抜き、必要な処置をして一連の処置を終了する。
内視鏡補助具60は、第一の支持部63と第二の支持部64との間、および第一の押さえ部65と第二の押さえ部66との間などが空いている。これにより、これらの間を通して局注や止血などの手技を行いやすく、かつ、高周波ナイフ200で切開した時に発生する煙などが空間Vに貯まり観察ユニット27により観察し難くなることを抑制することができる。
この第1変形例においても、直交方向Dに見たときに、突出部61、62は、第一の軸線C1上に配されている。
内視鏡補助具70をこのように構成することで、チャンネル21の内径が大きく処置具挿入部210の外径が大きい場合であっても、操作者は、蓋部P7と筋層P6との接続部分P8を電極212で切開しやすくすることができる。
第一の連結部76の基端部および第二の連結部の基端部は、挿入部20の先端硬質部22に医療用バンドBなどで取付けられている。
このように構成された変形例の内視鏡補助具75を備える内視鏡処置システム1Bによっても、本実施形態に係る内視鏡処置システム1と同様の効果を奏することができる。
なお、本変形例の内視鏡補助具75では、両連結部を備えずに、支持部63、64の基端部が挿入部20の先端硬質部22に直接取付けられるように構成してもよい。
次に、本発明の第2実施形態について図8および図9を参照しながら説明する。本発明の第1実施形態と同一の部位には、同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図8に示すように、本実施形態に係る内視鏡処置システム2は、第1実施形態に係る内視鏡処置システム1の内視鏡補助具60に代えて内視鏡補助具80を備えている。
内視鏡補助具80は、内視鏡補助具60の各構成に加えて、連結部81と、板状部材82とを備えている。連結部81は、第一の支持部63の基端部および第二の支持部64の基端部にそれぞれ連結される。板状部材82は、連結部81に回動可能に支持される。
図8および後述する図9においては、支持部63、64は互いに平行になるように形成されているが、支持部63、64は内視鏡補助具80の先端側に向かうにしたがって互いに近づくように形成されていてもよい。押さえ部65、66についても同様である。すなわち、図8および後述する図9においては、押さえ部65、66は互いに平行になるように形成されているが、押さえ部65、66は内視鏡補助具80の先端側に向かうにしたがって近づくように形成されていてもよい。
板状部材82は、ABS(Acrylonitrile Butadiene Styrene)樹脂などの生体適合性を有する公知の樹脂で矩形の板状に形成されている。板状部材82は、透明な材料で形成されることが好ましい。
板状部材82の縁部には、縁部に沿って間隔を空けて一対の貫通孔82aが形成されている。
図8に示すように、板状部材82の基端側の面が支持部63、64に当接したとき、支持部63、64に対する板状部材82の位置を通常位置と定義する。
板状部材82が通常位置にあるときに、第一の軸線C1は板状部材82の基端側の面と点Gで交わる。言い換えると、通常位置にある板状部材82は、第一の軸線C1に沿ってチャンネル21に挿通される処置具の進行を妨げる位置に配されている。
一方で、操作者が、チャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込むと、電極212が板状部材82に点Gで接触する。操作者が、高周波ナイフ200をさらに押し込むと、電極212が板状部材82を先端側に押すことで板状部材82が連結部81周りに回動し、電極212を板状部材82よりも前方に移動させることができる。
このように構成された本実施形態に係る内視鏡処置システム2によれば、操作者は、粘膜下層P5を筋層P6から容易に剥離することができる。
このように構成された内視鏡処置システム2Aは、板状部材82の先端側の面を蓋部P7が押したときに、板状部材82を支持部63、64および連結部81が支持する。一方で、操作者が、チャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込むと、電極212は板状部材82よりも突出部61、62側を通り板状部材82よりも前方に移動する。そして、この電極212により、操作者は、粘膜下層P5を筋層P6から容易に剥離することができる。
本実施形態の変形例では、内視鏡補助具85が連結部81を備えず、板状部材82が支持部63、64のみに取付けられるように構成してもよい。
次に、本発明の第3実施形態について図10から図14を参照しながら説明する。上述の実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。以下では内視鏡補助具に重点を置いて説明するが、これらの内視鏡補助具は前述の内視鏡10とともに内視鏡処置システムを構成する。
図10および図11に示すように、本実施形態に係る内視鏡補助具90は、取付け部材91と、側板92、93と、連結部材94とを備えている。取付け部91は、筒状であり、内視鏡10の挿入部20の先端硬質部22に着脱可能に配される。側板92、93は、取付け部材91の前方に第一の軸線C1を直交方向Dに挟むように配される。連結部材94は、側板92、93と取付け部材91とを連結する。
取付け部材91、側板92、93、および連結部材94は、シリコンやPTFE(ポリテトラフルオロエチレン)などの絶縁性および生体適合性を有する樹脂で一体に形成されている。
側板92の先端部であって連結部材94側の端が第一の突出部92aであり、側板93の先端部であって連結部材94側の端が第二の突出部93aである。側板92の第一の突出部92aから基端側に延びるように連なる縁部が第一の支持部92bであり、側板93の第二の突出部93aから基端側に延びるように連なる縁部が第二の支持部93bである。操作者が内視鏡10の挿入部20に取付け部材91を取付けたときに、第二の軸線C2と支持部92b、93bとがなす角度θ2は45°程度である。
このように構成された内視鏡補助具90が内視鏡10の先端硬質部22に取付けられたときには、第一の支持部92bと、第二の支持部93bと、連結部材94とが蓋部P7を支持する。一方で、操作者がチャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込むと、高周波ナイフ200は、電極212は側板92と側板93との間を通り側板92、93よりも前方に移動する。
フラップ101、連結部材102、103は、取付け部材91、第一の突出部61と同じ材料を用いてそれぞれ構成することができる。フラップ101と連結部材102、103との接続部、および連結部材102、103と取付け部材91との接続部は、公知の接着剤によりそれぞれ固定されている。すなわち、フラップ101は、連結部材102、103により取付け部材91に固定されている。
本実施形態の第1変形例では、フラップ101の先端部であって幅方向の端部が第一の突出部101a、第二の突出部101bである。フラップ101の第一の突出部101aから基端側に延びるように連なる縁部が第一の支持部101cであり、第二の突出部101bから基端側に延びるように連なる縁部が第二の支持部101dである。
内視鏡10の挿入部20に取付け部材91を取付けられたときに、第二の軸線C2と支持部101c、101dとがなす角度θ3は45°程度である。
連結部材102、103の長手方向の中間部には、牽引ワイヤ107の先端部がそれぞれ接続される。牽引ワイヤ107は、内視鏡補助具105の基端側に延びている。
このように構成された内視鏡補助具105では、操作者は、一対の牽引ワイヤ107を引き戻したり押し込んだりすることで、フラップ101を移動させて前述の角度θ3を調節することができる。すなわち、操作者は、チャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込んだときに、電極212が第一の突出部101aと第二の突出部101bとの間を通らない状態である。続いて、操作者は、電極212が第一の突出部101aと第二の突出部101bとの間を通るように、フラップ101を移動させ、前述の角度θ3を調節することができる。
側板111の縁部111a、および側板112の縁部112aは、基端側に向かうにしたがって取付け部材91の外周面に互いに近づくように傾斜している。側板111、112間の距離は、チャンネル21の内径に等しい。連結部材113は、第一の軸線C1に直交する断面形状が第一の軸線C1から離れる方向に向かって凸となる円弧状に形成されている。
取付け部材91、側板111、112、および連結部材113は、前述の内視鏡補助具90と同一の材料で一体に形成されている。
続いて、操作者が、チャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込むと、電極212は側板111と側板112との間を通り側板111、112よりも前方に移動する。
次に、本発明の第4実施形態について図15から図23を参照しながら説明する。前記実施形態と同一の部位には同一の符号を付してその説明は省略し、異なる点についてのみ説明する。
図15および図16に示すように、本実施形態に係る内視鏡補助具115は、前述の取付け部材91と、取付け部材91の先端部における対向する縁部同士に接続されたバー116とを備えている。
内視鏡補助具115と内視鏡10とで内視鏡処置システム4が構成される。
内視鏡10の挿入部20に取付け部材91を取付けたときの正面視において、バー116は、チャンネル21と観察ユニット27との間に配置されることが好ましい。
続いて、操作者が、内視鏡10のチャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込むと、電極212はバー116に接触することなく前方に移動する。
バー116に蓋部P7を掛けて挙上することで、蓋部P7の第二の軸線C2方向の長さが比較的短い場合であっても、蓋部P7をバー116で確実に支持することができる。
操作者が、蓋部P7を挙上した状態で内視鏡補助具115を揺動させることで、蓋部P7に対して内視鏡補助具115や電極212が直交方向Dに移動する。このため、蓋部P7を挙上した状態が変化せず、操作者は、切開や剥離を容易に行うことができる。
操作者は、このように構成された内視鏡処置システム4Aを用いて手技をする場合には、モニタに表示される図19に示す画像Mにおいて、病変粘膜部分P1を6時の方向に配置できるとは限らない。この場合、バー116は病変粘膜部分P1に対して大きく傾いた状態になる。このような場合であっても、突起121に蓋部P7を掛けることで、バー116で蓋部P7を確実に挙上することができる。
内視鏡補助具125がこのように構成されても、前述の本発明の第4実施形態の第1変形例の内視鏡補助具120と同様に、突起126に蓋部P7を掛けることで、突起126で蓋部P7を確実に挙上することができる。
内視鏡補助具130がこのように構成されても、前述の本発明の第4実施形態の第2変形例の内視鏡補助具125と同様に凹部131に蓋部P7を掛けることで、凹部131で蓋部P7を確実に挙上することができる。
各フック部材136の一方の端部には、前述のバー116の端部がそれぞれ固定されている。各フック部材136の他方の端部には、牽引ワイヤ138の先端部がそれぞれ接続されている。牽引ワイヤ138は内視鏡補助具135の基端側に延びている。牽引ワイヤ138が挿通されたシース139の先端部は、取付け部材91に固定されている。
取付け部材91の外周面には、公知の鉗子141が支持部材142により取付け部材91の軸線方向に進退可能に支持されている。
操作者が、蓋部P7と不図示の筋層P6との間にバー116を挿入し牽引ワイヤ138を引き戻すと、図23に示すように各フック部材136が支持軸137周りに回転してバー116が移動し、蓋部P7が鉗子141の前方に起上する。
続いて、操作者は、鉗子141を押し込んで一対の把持片141aで蓋部P7の先端部を把持する。この状態で、操作者は、チャンネル21に処置具挿入部210が挿通された高周波ナイフ200を押し込み、電極212で蓋部P7と筋層P6との接続部分P8の剥離を行う。
剥離が進んだら、操作者は、蓋部P7を把持した鉗子141を押し込むことで、病変粘膜部分P1が大きい場合であっても連続的に剥離を行うことができる。
例えば、本発明の第1実施形態および第2実施形態では、挿入部20に押さえ部65、66の基端部を医療用バンドBで取付けることで、挿入部20に内視鏡補助具が固定されていると説明した。しかし、挿入部20の先端硬質部22に着脱可能な筒状の取付け部材に押さえ部65、66の基端部を接着剤などで固定することで、挿入部20に内視鏡補助具を取付けるように構成してもよい。
押さえ部65、66についても同様に、互いに平行になるように配置されていてもよいし、平面視において内視鏡補助具の先端側に向かうにしたがって離間するように配置されていてもよい。
直交方向Dに見たときに、突出部61、62は第一の軸線C1上に配されていると説明した。しかし、突出部61、62が配される位置はこの限りではなく、突出部61、62が第一の軸線C1からずれた位置に配されていてもよい。
10 内視鏡
20 挿入部
21 チャンネル
22a 先端面
60、70、75、80、85、90、100、105、110、115、120、125、130、135 内視鏡補助具
61、92a、101a 第一の突出部
62、93a、101b 第二の突出部
63、92b、101c 第一の支持部
64、93b、101d 第二の支持部
65 第一の押さえ部
66 第二の押さえ部
81 連結部
82 板状部材
C1 チャンネルの軸線(第一の軸線)
C2 挿入部の軸線(第二の軸線)
Claims (6)
- 内視鏡の先端部に取付けられる内視鏡補助具であって、
前記内視鏡補助具は、
長手軸に沿って延設された第一の支持部と、
前記第一支持部の前記長手軸と略平行に設けられた第二の支持部と、
前記第一の支持部および前記第二の支持部の先端部にそれぞれ設けられ、前記内視鏡の前記先端部よりも遠位側かつ前記内視鏡の前記先端部に開口するチャンネルの軸線を挟むように配された第一の突出部および第二の突出部と、
前記第一の支持部および前記第二の支持部が前記チャンネルの前記軸線に対して傾斜するように前記第一の突出部および前記第二の突出部を前記内視鏡の前記先端部に対して位置決めする位置決め部と、
を有する内視鏡補助具。 - 前記第一の突出部に先端部が連なり、前記内視鏡補助具の基端側に延びて基端部が前記挿入部に取付けられた第一の押さえ部と、
前記第二の突出部に先端部が連なり、前記基端側に延びて基端部が前記挿入部に取付けられた第二の押さえ部と、
を備える請求項1に記載の内視鏡補助具。 - 前記第一の支持部および前記第二の支持部にそれぞれ取付けられ、前記チャンネルの前記軸線を含まない領域に設けられた板状部材を備える請求項1に記載の内視鏡補助具。
- 前記第一の支持部の基端部および前記第二の支持部の基端部にそれぞれ連結された連結部と、
前記第一の支持部および前記第二の支持部よりも先端側に配置されるとともに、前記第一の支持部および前記第二の支持部に当接可能に配置され、前記連結部に回動可能に支持された板状部材とを備える請求項1に記載の内視鏡補助具。 - 前記板状部材は透明な材料で形成されている請求項3または4に記載の内視鏡補助具。
- 可撓性の挿入部を有し、前記挿入部の先端面に開口するチャンネルが形成された内視鏡と、
前記挿入部の先端部に取付けられる内視鏡補助具と、
を備え、
前記内視鏡補助具は、
前記挿入部の前記先端面よりも先端側であって、前記挿入部の軸線に直交する直交方向において前記チャンネルの軸線を挟むように配された第一の突出部および第二の突出部と、
前記直交方向に見たときに、
前記第一の突出部に先端部が連なり、前記挿入部の軸線に対して傾いて前記先端面側に延び、基端部が前記挿入部に取付けられた第一の支持部と、
前記第二の突出部に先端部が連なり、前記挿入部の軸線に対して前記第一の支持部と同じ側に傾いて前記先端面側に延び、基端部が前記挿入部に取付けられた第二の支持部と、
を有する内視鏡処置システム。
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EP14859098.7A EP3064121A4 (en) | 2013-11-01 | 2014-10-29 | Endoscopic treatment system |
JP2015521895A JP5792416B1 (ja) | 2013-11-01 | 2014-10-29 | 内視鏡処置システム |
CN201480024962.9A CN105188507B (zh) | 2013-11-01 | 2014-10-29 | 内窥镜处理系统 |
US14/945,141 US10278564B2 (en) | 2013-11-01 | 2015-11-18 | Endoscope treatment system |
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EP (1) | EP3064121A4 (ja) |
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Also Published As
Publication number | Publication date |
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JPWO2015064616A1 (ja) | 2017-03-09 |
US20160073859A1 (en) | 2016-03-17 |
US10278564B2 (en) | 2019-05-07 |
EP3064121A4 (en) | 2017-09-06 |
EP3064121A1 (en) | 2016-09-07 |
JP5792416B1 (ja) | 2015-10-14 |
CN105188507A (zh) | 2015-12-23 |
CN105188507B (zh) | 2017-05-24 |
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