WO2015166980A1 - 内視鏡用粘膜挙上具及び内視鏡処置システム - Google Patents
内視鏡用粘膜挙上具及び内視鏡処置システム Download PDFInfo
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- WO2015166980A1 WO2015166980A1 PCT/JP2015/062966 JP2015062966W WO2015166980A1 WO 2015166980 A1 WO2015166980 A1 WO 2015166980A1 JP 2015062966 W JP2015062966 W JP 2015062966W WO 2015166980 A1 WO2015166980 A1 WO 2015166980A1
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- endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
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- 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
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- A61B1/00089—Hoods
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Definitions
- the present invention relates to an endoscope mucosa lifting tool and an endoscope treatment system.
- an endoscope auxiliary tool is attached to a distal end portion of an insertion portion of an endoscope to improve the function of the endoscope.
- Patent Literature 1 discloses an endoscope treatment system in which an endoscope hood is attached as an endoscope auxiliary tool to a distal end portion of an endoscope insertion portion.
- the endoscope hood disclosed in Patent Document 1 includes a substantially cylindrical transparent cap portion, and a substantially cylinder that detachably fixes the endoscope hood to the distal end portion of the insertion portion of the endoscope.
- an endoscope mounting portion projects from the distal end portion of the endoscope mounting portion toward the inside.
- a claw portion projects from the distal end portion of the cap portion toward the inner side.
- the insertion portion of the endoscope is moved to the endoscope mounting portion until the distal end of the insertion portion of the endoscope hits the endoscope locking portion. Pushed in.
- the endoscope mounting portion of the endoscope hood is fixed to the distal end of the insertion portion of the endoscope in a state where the distal end of the insertion portion of the endoscope does not enter the cap portion.
- the distal end opening of the cap portion of the endoscope hood disclosed in Patent Document 1 is pressed against the site to be treated, for example, the mucous membrane at the site to be mucosally excised.
- An operator of the endoscope treatment system disclosed in Patent Document 1 pushes out the snare wire in a state where the distal end portion of the snare wire drawn out from the snare sheath is applied to the claw portion when the endoscope treatment system is used.
- 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.
- the operator pulls the snare wire into the snare sheath and binds the root of the excised portion of the mucosa. Thereafter, the mucous membrane can be excised by energizing the snare wire with 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 a lesioned mucosa is removed using this high-frequency knife. It has been known.
- An operator who performs endoscopic submucosal dissection first introduces an injection needle into a body cavity through a channel of the endoscope. Subsequently, the operator injects physiological saline into the submucosal layer of the lesioned mucosa using an injection needle to raise the lesioned mucosa. Furthermore, the operator wears the counter electrode plate of the high-frequency knife on the patient. Thereafter, an operator introduces a high-frequency knife having a known needle-like electrode into the body endoscopically.
- the operator When the operator energizes the electrode, stabs the electrode around the lesioned mucosa, and moves the electrode laterally along the periphery of the lesioned mucosa, the submucosal layer around the lesioned mucosa is incised.
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an endoscopic mucosal lifting device and endoscope that can ensure a wide working space between the submucosa and the muscle layer.
- a mirror treatment system is provided.
- the endoscopic mucosal lifting device has a push-up surface that protrudes from the distal end portion of the endoscope and has a predetermined width for raising the tissue.
- a first support portion provided at a position protruding from the distal end portion of the endoscope at a position protruding from the outer surface of the raised portion with a gap spaced outward from the raised portion;
- a position facing the first support portion with respect to the raised portion is provided with a gap spaced outward from the outer surface of the raised portion.
- a second support part wherein the first support part and the second support part have a predetermined width in order to press down the tissue surrounding the tissue pushed up by the pushing surface of the raised part. It has a lower surface.
- the endoscope has a long insertion portion having a predetermined central axis,
- the upper portion may have the push surface at a position further distally along the central axis than the distal end portion of the insertion portion.
- the raised portion, the first support portion, and the second support portion may be rod-shaped.
- the push-up part is connected to the raising part so as to connect the raised part to the endoscope.
- the first support part and the second support part are formed from the distal end of the endoscope. You may extend inclining with respect to the raising part.
- the raised portion includes a first raised portion and a second raised portion that are separated from each other, and the first raised portion. You may have a connection part which connects the proximal end of upper part, and the proximal end of said 2nd raising part.
- the endoscopic mucosal lifting device in the endoscopic mucosal lifting device according to the first aspect, includes the distal end of the first support portion, You may further provide the connection part which connects the distal end of said 2nd support part.
- an endoscope treatment system includes: an endoscopic mucosal lifting device according to the first aspect; and an endoscope to which the endoscopic mucosal lifting device is attached. Prepare.
- FIG. 1 is an overall view showing an endoscope treatment system according to an embodiment of the present invention. It is a top view which shows the structure of the distal part of the endoscope treatment system which concerns on one Embodiment of this invention. It is a front view which shows the mucosal lifting tool for endoscopes and an endoscope in the endoscope treatment system which concerns on one Embodiment of this invention. It is a figure which shows an example of the endoscopic image at the time of use of the endoscope treatment system which concerns on one Embodiment of this invention. It is a figure which shows one process at the time of use of the endoscope treatment system which concerns on one Embodiment of this invention.
- FIG. 1 is an overall view showing an endoscope treatment system (ESD treatment system 1) according to the present embodiment.
- FIG. 2 is a plan view showing the configuration of the distal portion of the ESD treatment system 1.
- FIG. 3 is a front view showing the endoscopic mucosa lifting tool 30 and the endoscope 10 in the ESD treatment system 1.
- An ESD treatment system 1 is an endoscopic treatment system having a configuration suitable for performing an endoscopic submucosal dissection (ESD).
- the ESD treatment system 1 includes an endoscope 10, an endoscopic mucosa lifting tool 30, and an endoscopic incision tool 50.
- the endoscope 10 includes an insertion unit 11, an operation unit 23, and a universal cable 29.
- the insertion portion 11 is an elongated member that can be inserted into the body.
- the insertion portion 11 includes a distal rigid portion 12, a bending portion 17, and a flexible tube portion 18.
- the distal rigid portion 12 is disposed on the most distal side in the insertion portion 11.
- the distal rigid portion 12 has an observation unit 13 for observing the treatment target site, an illumination unit 14 that irradiates the treatment target site with illumination light, and a distal opening 16 of the treatment instrument channel 19. is doing.
- the distal opening 16 of the treatment instrument channel 19 serves as a passage through which an endoscope treatment instrument such as the endoscope incision instrument 50 protrudes forward.
- the observation unit 13 includes a solid-state imaging device such as a CCD (charge coupled device) area image sensor and an optical system (both not shown).
- the observation unit 13 has a so-called direct-view configuration in which an imaging field of view is set in front of the insertion portion 11.
- the configuration of the observation unit 13 is not particularly limited. That is, an imaging unit applicable to a known endoscope may be appropriately selected and applied as the imaging unit.
- the illuminating unit 14 is a light source (not shown) such as an LED (light emitting diode), LD (laser diode), or incandescent lamp, and light emitted from the light source toward the front of the insertion unit 11 as illumination light.
- a light source such as an LED (light emitting diode), LD (laser diode), or incandescent lamp, and light emitted from the light source toward the front of the insertion unit 11 as illumination light.
- Part 15 the structure of the illumination part 14 is not specifically limited. That is, instead of the configuration in which the light source is arranged on the distal rigid portion 12 and emits illumination light, the illumination light may be guided through an optical fiber from an external light source connected through the universal cable 29.
- the distal opening 16 of the treatment instrument channel 19 is opened in the distal end surface 12a of the distal rigid portion 12.
- the treatment instrument channel 19 is connected to the operation portion 23 through the inside of the distal rigid portion 12, the inside of the bending portion 17, and the inside of the flexible tube portion 18.
- the treatment instrument channel 19 has a proximal opening 27 in the operation portion 23.
- an endoscopic treatment instrument such as the endoscopic incision instrument 50 can be inserted into the proximal opening 27 of the treatment instrument channel 19 via a forceps plug 28 described later.
- the bending portion 17 can be bent in accordance with the operation of the angle knob 25 disposed on the operation portion 23.
- the flexible tube portion 18 is a cylindrical member made of resin or the like.
- a channel tube 20, an angle wire 21, and a wiring 22 are arranged inside the flexible tube portion 18.
- the channel tube 20 constitutes a treatment instrument channel 19.
- the angle wire 21 is provided in order to transmit from the operation unit 23 a force amount for causing the bending portion 17 to bend.
- the wiring 22 is provided to transmit power and signals to the observation unit 13 and the illumination unit 14.
- the operation unit 23 includes a main body unit 24 held by the operator, an angle knob 25 for bending the bending unit 17, switches 26 for performing various operations on the endoscope 10, and the treatment instrument channel 19. And a forceps plug 28 communicated with the proximal opening 27 of the device.
- the endoscopic mucosal lifting tool 30 is attached to and detached from the outer peripheral surface of the distal end 11a of the insertion portion 11 in the endoscope 10 according to the present embodiment. It is an instrument that can be used by being attached to the endoscope 10 to raise the mucous membrane in an ESD procedure.
- the endoscopic mucosa lifting tool 30 includes a lifting tool body 31 and an attachment member 44.
- the lifting tool main body 31 is a member that creates a wide working space between the submucosa and the muscle layer by raising the mucosa peeled from the muscle layer and further stretching the mucosa.
- the lifting tool body 31 includes a lifting member 32 and a pressing member 40.
- the raising member 32 is used for raising the mucous membrane in the endoscopic mucosa lifting device 30 according to the present embodiment.
- the raising member 32 includes a first holding part 33, a second holding part 34, a first raising part 35, a second raising part 36, and a connecting part 37.
- the connecting portion 37 connects the first raised portion 35 and the second raised portion 36.
- the first pressing portion 33 is a rod-like portion that extends substantially linearly toward the distal end side from the distal end surface 12a of the distal rigid portion 12 of the insertion portion 11.
- the second pressing portion 34 is a rod-shaped portion that extends substantially linearly toward the distal end side with respect to the distal end surface 12a of the distal rigid portion 12 of the insertion portion 11.
- the center line of the first pressing part 33 and the center line of the second pressing part 34 exist on the same plane.
- the distance between the 1st press part 33 and the 2nd press part 34 is gradually as the 1st press part 33 and the 2nd press part 34 go to each distal end 33a, 34a. It is arranged to be shorter.
- the arrangement relationship between the first pressing portion 33 and the second pressing portion 34 is not limited to this. For example, in the direction in which the center line of the second pressing portion 34 extends, the center line of the first pressing portion 33 extends. What is necessary is just to be substantially parallel to the direction.
- the 1st press part 33 and the 2nd press part 34 should just be a shape which is easy to touch a structure
- the first pressing portion 33 and the second pressing portion 34 are attached to the outer surface of the distal rigid portion 12 of the insertion portion 11.
- the first pressing portion 33 and the second pressing portion 34 are detachably attached to the distal rigid portion 12 by the attachment member 44.
- the first raised portion 35 is a rod-shaped portion connected to the distal end 33 a of the first pressing portion 33 in a state having an angle with respect to the first pressing portion 33.
- the angle formed by the first raised portion 35 and the first pressing portion 33 is 45 °.
- corner which the 1st raising part 35 and the 1st press part 33 make is not restricted to 45 degrees, and should just extend in the direction which mutually cross
- the second raised portion 36 is a rod-shaped portion connected to the distal end 34 a of the second pressing portion 34 in a state having an angle with respect to the second pressing portion 34.
- the angle formed by the second raised portion 36 and the second pressing portion 34 is 45 °.
- corner which the 2nd raising part 36 and the 2nd press part 34 make is not restricted to 45 degrees, and should just extend in the direction which mutually cross
- the distal end 35 a of the first raised portion 35 and the distal end 36 a of the second raised portion 36 are both arranged on the distal side of the distal end surface 12 a of the insertion portion 11. Further, the distal end 35a of the first raised portion 35 and the distal end 36a of the second raised portion 36 are positioned so as to sandwich an axis of a treatment instrument channel 19 described later in an orthogonal direction perpendicular to the axis of the insertion portion 11. There is a relationship.
- the connecting portion 37 that connects the first raised portion 35 and the second raised portion 36 is a rod-like portion that connects the proximal end 35 b of the first raised portion 35 and the proximal end 36 b of the second raised portion 36. Even if the connecting portion 37 is not provided, the first raised portion 35 and the second raised portion 36 can exhibit the same effect, but it is more preferable that the connecting portion 37 is provided.
- the 1st press part 33, the 2nd press part 34, the 1st raising part 35, the 2nd raising part 36, and the connection part 37 cover a metal rod-shaped member and the outer surface of a rod-shaped member, for example. It has an insulating coating and is formed by bending a rod-shaped member.
- the pressing member 40 includes a first support part 41, a second support part 42, and a connecting part 43.
- the connecting portion 43 connects the first support portion 41 and the second support portion 42.
- the first support portion 41 is provided apart from the outer surface of the first raised portion 35 with a gap therebetween.
- the first support portion 41 is a rod-like portion that has an angle with respect to the first pressing portion 33 and is fixed in the vicinity of the proximal end 33 b of the first pressing portion 33.
- the part fixed to the 1st press part 33 in the 1st support part 41 is the proximal end 41b of the 1st support part 41, for example.
- the extending direction of the first support portion 41 only needs to have an angle with respect to the central axis of the first raised portion 35, and does not necessarily need to have an angle with respect to the first pressing portion 33. .
- the second support portion 42 is spaced apart from the first raised portion 35 and the second raised portion 36 at a position facing the first support portion 41 with a gap outward from the outer surface of the second raised portion 36. Is provided.
- the second support part 42 is a rod-like part fixed to the vicinity of the proximal end 34 b of the second pressing part 34 with an angle with respect to the second pressing part 34.
- suppressing part 34 in the 2nd support part 42 is the proximal end 42b of the 2nd support part 42, for example.
- the direction in which the second support portion 42 extends only needs to have an angle with respect to the central axis of the second raised portion 36, and does not necessarily have to have an angle with respect to the second pressing portion 34. .
- the central axis of the first support portion 41 is the central axis of the first raised portion 35.
- the central axis of the second support portion 42 extends in a direction crossing the central axis of the second raised portion 36. More preferably, when the endoscopic mucosal lifting device 30 is viewed from the direction in which the first raised portion 35 and the second raised portion 36 overlap, the central axis of the first support portion 41 is the first raised portion 35.
- the central axis of the second support portion 42 intersects the central axis of the second raised portion 36.
- the connecting portion 43 that connects the first support portion 41 and the second support portion 42 is a rod-like portion that connects the distal end 41 a of the first support portion 41 and the distal end 42 a of the second support portion 42.
- the attachment member 44 is, for example, a resin band, and the first pressing portion 33 and the second pressing portion 34 are in contact with the outer surface of the distal rigid portion 12 of the insertion portion 11 of the endoscope 10. 33 and the second pressing portion 34 can be held. Further, the attachment member 44 can be removed from the distal rigid portion 12 of the insertion portion 11 by an operator's manual work or the like.
- An endoscopic incision tool 50 shown in FIG. 1 is a treatment instrument for incising a living tissue.
- a known endoscopic cutting tool may be appropriately selected and applied as the endoscopic cutting tool 50 of the present embodiment.
- a high-frequency knife that cuts a living tissue by cauterization by receiving supply of a high-frequency current from a high-frequency power supply device is applied as the endoscopic incision tool 50.
- the endoscope incision instrument 50 (high-frequency knife 50) of the present embodiment includes a treatment instrument insertion portion 51, a treatment instrument operation portion 55, and a counter electrode plate (not shown).
- the treatment instrument insertion portion 51 includes a sheath 52, an incision electrode 53, and a power supply wire 54.
- the sheath 52 is a flexible cylindrical member and has an insulating property.
- a power supply wire 54 is disposed inside the sheath 52 so as to be able to advance and retract.
- the incision electrode 53 shown in FIGS. 3 and 4 is an electrode fixed to the distal end 54a of the power supply wire 54, and cauterizes and incises the living tissue by contacting the living tissue with a high-frequency current applied. .
- the cutting electrode 53 is moved from the opening (see FIG. 6) of the sheath 52 to the inside of the sheath 52 by moving the feeding wire 54 toward the proximal end 52b of the sheath 52 as shown in FIG. Fully contained.
- the cutting electrode 53 protrudes from the opening of the distal end 52 a of the sheath 52 when the feeding wire 54 is moved toward the distal end 52 a of the sheath 52.
- the treatment instrument operation unit 55 includes a rod-shaped operation unit main body 56 and a slider 58 as shown in FIG.
- the operation portion main body 56 is fixed to the proximal end 52 b of the sheath 52.
- the slider 58 is provided so as to be slidable in the longitudinal direction of the operation unit main body 56 with respect to the operation unit main body 56.
- the proximal end 56b of the operation unit main body 56 is provided with a ring 57 for finger attachment.
- the slider 58 is connected to the operation unit main body 56 so as to be movable back and forth in the longitudinal direction of the operation unit main body 56.
- the slider 58 includes a connector 59 fixed to the proximal end 54 b of the power supply wire 54 and a finger hanging ring 60.
- the connector 59 provided on the slider 58 can be connected to a high-frequency power supply device (not shown).
- the high-frequency current generated by the high-frequency power supply device is energized from the high-frequency power supply device to the incision electrode 53 through the connector 59 and the feeding wire 54.
- the operator places a finger on each of the ring 57 provided on the operation unit main body 56 and the ring 60 provided on the slider 58 to open and close the hand, thereby moving the slider 58 forward and backward relative to the operation unit main body 56. Can be made.
- FIG. 4 is a diagram illustrating an example of an endoscopic image when the ESD treatment system 1 is used.
- FIG. 5 is a diagram illustrating a process during use of the ESD treatment system 1.
- FIG. 6 is a side view showing a state in which the endoscopic mucosa lifting tool 30 lifts the mucosa.
- FIG. 7 is a partial cross-sectional view showing the state in which the endoscopic mucosa lifting tool 30 is raised in the mucosa in a side view.
- FIG. 4 is a diagram illustrating an example of an endoscopic image when the ESD treatment system 1 is used.
- FIG. 5 is a diagram illustrating a process during use of the ESD treatment system 1.
- FIG. 6 is a side view showing a state in which the endoscopic mucosa lifting tool 30 lifts the mucosa.
- FIG. 7 is a partial cross-sectional view showing the state in which the endoscopic mucosa lifting tool 30 is raised in the mucosa in a side view.
- FIG. 8 is a front view showing a state in which the endoscopic mucosa lifting tool 30 lifts the mucosa.
- FIG. 9 is a front view showing a state in which the endoscopic mucosa lifting tool 30 lifts the mucosa.
- FIG. 10 is a rear view showing a state where the endoscopic mucosa lifting tool 30 is raised, and the mucosa is lifted when viewed in the field of view of the endoscopic image of the endoscope 10. Indicates the state.
- the counter electrode plate of the high-frequency knife 50 is attached to the patient. Further, before the use of the ESD treatment system 1, the endoscopic mucosa lifting device 30 according to this embodiment is attached to the distal rigid portion 12 of the insertion portion 11 by the attachment member 44.
- the operator of the ESD treatment system 1 introduces the distal end 11a of the insertion portion 11 of the endoscope 10 into the digestive tract, for example, from the mouth into the digestive tract by a known technique, and reaches the treatment target site to the distal end 11a of the insertion portion 11. To guide you. At this time, the insertion section is operated so that the lesioned mucosa portion P1 (see FIG. 4) as the part to be excised enters the visual field of the endoscope 10 while operating the angle knob 25 as necessary to bend the bending portion 17. 11 to adjust the position of the distal end 11a.
- the operator With the operator holding the position of the distal end 11a of the insertion portion 11 with respect to the patient, the operator introduces an unillustrated injection needle into the digestive tract through the forceps plug 28 and the treatment instrument channel 19 of the endoscope 10. To do. Using the injection needle introduced into the gastrointestinal tract, the operator injects physiological saline into the submucosal layer of the lesion mucosa portion P1 to raise the lesion mucosa portion P1. When the lesion mucosa portion P1 is raised, the operator pulls out the injection needle from the treatment instrument channel 19.
- the operator inserts a high-frequency knife 50 into the treatment instrument channel 19.
- the high-frequency knife 50 is prepared in a state where the cutting electrode 53 is accommodated in the sheath 52.
- the high frequency knife 50 is prepared in a state where the connector 59 of the high frequency knife 50 is connected to the high frequency power supply device.
- the operator introduces the treatment instrument insertion portion 51 of the high-frequency knife 50 into the treatment instrument channel 19 through the forceps plug 28 shown in FIG.
- the operator stops the treatment instrument insertion portion 51 when the treatment instrument insertion portion 51 protrudes from the distal end 11 a of the insertion portion 11.
- the distal end 52 a of the sheath 52 is located between the first pressing portion 33 and the second pressing portion 34 by the endoscopic image acquired using the observation unit 13 of the endoscope 10.
- the arranged state is visible.
- the operator moves the slider 58 of the treatment instrument operation unit 55 shown in FIG. 1 with respect to the operation unit main body 56 and causes the incision electrode 53 to protrude from the sheath 52 of the high-frequency knife 50. If necessary, the operator moves the distal rigid portion 12 of the endoscope 10 by bending the bending portion 17 of the endoscope 10 so that the position of the incision electrode 53 reaches the planned resection position. Adjust the position. Subsequently, the operator operates a switch (not shown) to generate a high-frequency current in the high-frequency power supply device, and the high-frequency current is applied to the incision electrode 53 through the connector 59 and the power supply wire 54.
- the operator houses the incision electrode 53 in the sheath 52, and pulls the sheath 52 back into the treatment instrument channel 19.
- both the distal end 33a of the first pressing portion 33 and the distal end 34a of the second pressing portion 34 are inserted into the opening P3 formed in the mucosal lesion P1.
- the operator moves the insertion portion 11 of the endoscope 10.
- the first pressing portion 33 and the second pressing portion 34 are introduced between the submucosa P5 and the muscle layer P6.
- the first pressing portion 33 and the second pressing portion 34 are in contact with the muscle layer P6, and the first raised portion 35 and the second raised portion 36 are in contact with the submucosa P5.
- the first raised portion 35 and the second raised portion 36 are held in a state where the submucosa P5 is pushed up so that the submucosa P5 is separated from the muscle layer P6.
- the submucosal layer P5 has the first raised portion 35 and the first supporting portion. 41 and between the second raised portion 36 and the second support portion 42. Further, the submucosa P5 is pressed toward the muscle layer P6 by the first support part 41 and the second support part 42.
- the outer surface of the first raised portion 35 is a pushing surface that pushes up the submucosal layer P5. Further, when the submucosal layer P5 enters between the first raised portion 35 and the first support portion 41, the outer surface of the first support portion 41 is a pressing surface that pushes down the submucosal layer P5.
- the outer surface of the second raised portion 36 is a push-up surface that pushes up the submucosal layer P5. Further, when the submucosal layer P5 enters between the second raised portion 36 and the second support portion 42, the outer surface of the second support portion 42 is a pressing surface that pushes down the submucosa P5.
- the first support portion 41 and the second support portion 42 simultaneously push the submucosa P5 toward the muscle layer P6.
- the submucosa P5 receives a force stretched between the first raised portion 35 and the second raised portion 36.
- the submucosal layer P5 between the first raised portion 35 and the second raised portion 36 resists the gravity or the like that hangs down to the muscle layer P6 side, and the first raised portion 35 and the second raised portion. It is stretched between 36.
- the submucosal layer P5 is stretched between the first raised portion 35 and the second raised portion 36, it becomes easy to observe between the submucosal layer P5 and the muscular layer P6 using the observation unit 13. .
- the operator causes the high-frequency knife 50 shown in FIG. 1 to project again from the treatment instrument channel 19 as shown in FIG. 6 with the raising member 32 sufficiently raised the submucosa P5, and the incision electrode 53 is moved. After protruding from the sheath 52, a high-frequency current is applied to the incision electrode 53 to excise the lesion mucosa portion P1.
- the lifting tool main body 31 is connected to the submucosa P5 so that the connecting portion 43 that connects the first support portion 41 and the second support portion 42 enters between the submucosa P5 and the muscle layer P6. You may put between muscle layers P6 (refer to Drawing 13). In this case, the submucosa P5 can be pushed up more widely than the first raised portion 35 and the second raised portion 36 push the submucosa P5 against the muscle layer P6.
- the operator After the excision of the lesion mucosa portion P1, the operator removes the high-frequency knife 50 and the endoscope 10 from the digestive tract. Since the endoscopic mucosal lifting tool 30 is attached to the insertion portion 11 of the endoscope 10 by the attachment member 44, the endoscopic mucosal lifting tool 30 can be removed by removing the endoscope 10 from the endoscope. 10 and withdrawn from the digestive tract.
- the operator of the ESD treatment system 1 A site to be incised can be easily visually recognized in the gap between P5 and the muscle layer P6.
- the first support portion 41 and the second support portion 42 press the submucosa P5 so that the submucosa P5 is stretched between the first raised portion 35 and the second raised portion 36.
- the submucosal layer P5 is prevented from sagging toward the muscle layer P6, and a good visual field using the observation unit 13 of the endoscope 10 is obtained.
- the muscle layer P6 is held almost flat, so that the procedure can be easily performed.
- FIG. 11 is a side view showing a configuration and usage of a modified example of the ESD treatment system 1.
- FIG. 12 is a perspective view showing an endoscopic mucosa lifting tool applied to the ESD treatment system 1A of the present modification.
- the ESD treatment system 1 ⁇ / b> A replaces the first support portion 41 and the second support portion 42 with the distal end 41 a and the second support portion of the first support portion 41.
- the configuration is different from that of the ESD treatment system 1 of the above embodiment in that the first support portion 41A and the second support portion 42A that extend further to the distal end side than the distal end 42a of the 42 are provided.
- the distal end 41aA of the first support portion 41A is further on the distal end side than the distal end 33a of the first pressing portion 33 when viewed from the direction in which the first raised portion 35 and the second raised portion 36 overlap. positioned.
- the distal end 42aA of the second support portion 42A is further on the distal end side than the distal end 34a of the second pressing portion 34 when viewed from the direction in which the first raised portion 35 and the second raised portion 36 overlap. positioned.
- the distal end 33a of the first pressing portion 33, the distal end 34a of the second pressing portion 34, the distal end 41aA of the first supporting portion 41A, and the distal end 42aA of the second supporting portion 42A are used.
- one plane ⁇ is defined.
- the distal end 41aA of the first support portion 41A and the distal end 42aA of the second support portion 42A are more rigid than the distal end 33a of the first pressing portion 33 and the distal end 34a of the second pressing portion 34.
- the surface ⁇ is inclined with respect to the distal end surface 12 a of the distal rigid portion 12 by being located away from the portion 12.
- the mucosal surface is along the surface ⁇ defined by the first raised portion 35 and the second raised portion 36.
- the distal end 33a of the first pressing portion 33, the distal end 34a of the second pressing portion 34, the distal end 41aA of the first supporting portion 41A, and the second supporting portion 42A can be brought into contact with the mucous membrane P2 at an obtuse angle by having the mucosal surface along the surface ⁇ formed by the distal end 42aA.
- the distal end 33a of the first pressing portion 33, the distal end 34a of the second pressing portion 34, the distal end 41aA of the first supporting portion 41A, and the distal end 42aA of the second supporting portion 42A are simultaneously digestive tract.
- the high-frequency knife 50 is protruded from the treatment instrument channel 19 in a state of being in contact with the inner wall, the approach angle of the incision electrode 53 with respect to the inner wall of the digestive tract becomes an obtuse angle.
- the risk of perforation of the digestive tract can be reduced by making the incision electrode 53 an obtuse angle with respect to the inner wall of the digestive tract.
- the first support portion 41A and the second support portion 42A do not necessarily have to be fixed to the first press portion 33 and the second press portion 34. That is, the ESD treatment system includes a ring-shaped cap that can be fixed to the outer peripheral portion of the distal end surface 12a of the distal rigid portion 12 of the endoscope 10, and the first pressing portion 33 and the second pressing portion fixed to the cap.
- the cap 34 may include a first support portion 41A and a second support portion 42A that are fixed to positions different from the fixing positions of the first pressing portion 33 and the second pressing portion 34 in the cap.
- the endoscope mucosal lifting device 30 includes a connecting portion 37 that connects the first raised portion 35 and the second raised portion 36, and a first support portion 41 and a second support portion 42. It is not necessary to provide the connection part 43 which connects.
- the first pressing portion 33 and the second pressing portion 34 are not provided, and the proximal end 35b and the second lifting portion of the first raising portion 35 are provided.
- the proximal end 36b of 36 may be attached to the distal rigid portion 12 of the endoscope.
- the first support portion 41 and the second support portion 42 are fixed to the proximal end 35b of the first raised portion 35 and the proximal end 36b of the second raised portion 36, or the first raised portion 35 and the second raised portion 36 are fixed. It is fixed to the distal rigid portion 12 through the ring-shaped cap shown in the above-mentioned modified example together with the raised portion 36.
- an endoscopic mucosal lifting tool and an endoscope treatment system that can secure a wide working space between the submucosa and the muscle layer.
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Abstract
Description
本願は、2014年5月2日に、日本国に出願された特願2014-095477号に基づき優先権を主張し、その内容をここに援用する。
内視鏡装着部の遠位端部には、内部側に向けて内視鏡係止部が突設されている。キャップ部の遠位端部には、爪部が内部側に向けて突設されている。
図1に示すように、ESD処置システム1は、内視鏡10と、内視鏡用粘膜挙上具30と、内視鏡用切開具50とを備える。
挿入部11は、遠位硬質部12と、湾曲部17と、可撓管部18とを備える。
遠位硬質部12は、処置対象部位を観察するための観察ユニット13と、処置対象部位に対して照明光を照射する照明部14と、処置具チャンネル19の遠位開口部16と、を有している。処置具チャンネル19の遠位開口部16は、内視鏡用切開具50等の内視鏡用処置具が前方へ突出される通路となる。
図1,図2,及び図3に示すように、内視鏡用粘膜挙上具30は、本実施形態に係る内視鏡10における挿入部11の遠位端11aの外周面に対して着脱可能であり、ESD手技において粘膜を挙上するために内視鏡10に取り付けて利用可能な器具である。
内視鏡用粘膜挙上具30は、挙上具本体31と、取付部材44とを備える。
挙上具本体31は、挙上部材32と、押下部材40とを備える。
本実施形態では、第一押さえ部33、第二押さえ部34、第一挙上部35、第二挙上部36、及び連結部37は、例えば、金属製の棒状部材と、棒状部材の外面を覆う絶縁被覆とを有し、棒状部材が曲げられることによって形成されている。
本実施形態では、第一支持部41は、第一押さえ部33に対して角度を有して第一押さえ部33の近位端33b近傍に固定された棒状部である。第一支持部41において第一押さえ部33に固定されている部位は、例えば、第一支持部41の近位端41bである。なお、第一支持部41の延びる方向は、第一挙上部35の中心軸に対して角度を有していれば良く、必ずしも第一押さえ部33に対して角度を有している必要はない。
第二支持部42は、第二押さえ部34に対して角度を有して第二押さえ部34の近位端34b近傍に固定された棒状部である。第二支持部42において第二押さえ部34に固定されている部位は、例えば、第二支持部42の近位端42bである。なお、第二支持部42の延びる方向は、第二挙上部36の中心軸に対して角度を有していれば良く、必ずしも第二押さえ部34に対して角度を有している必要はない。
図1に示す内視鏡用切開具50は、生体組織を切開する処置具である。本実施形態では、公知の内視鏡用切開具が適宜選択して本実施形態の内視鏡用切開具50として適用されてよい。たとえば、内視鏡用切開具50として、高周波電源装置から高周波電流の供給を受けて生体組織を焼灼により切開する高周波ナイフが適用される。
切開電極53は、給電ワイヤ54が図1に示すようにシース52の近位端52b側へと移動されることによって、シース52の遠位端52aの開口(図6参照)からシース52の内部に完全に収容される。また、切開電極53は、給電ワイヤ54がシース52の遠位端52a側へと移動されることによって、シース52の遠位端52aの開口から突出する。
以下では、本実施形態のESD処置システム1を用いて体腔内の粘膜切除を行なう際の動作を例示する。
図4は、ESD処置システム1の使用時における内視鏡画像の一例を示す図である。図5は、ESD処置システム1の使用時の一過程を示す図である。図6は、内視鏡用粘膜挙上具30が粘膜を挙上している状態を示す側面図である。図7は、内視鏡用粘膜挙上具30が粘膜を挙上している状態を側面視で示す部分断面図である。図8は、内視鏡用粘膜挙上具30が粘膜を挙上している状態を示す正面図である。図9は、内視鏡用粘膜挙上具30が粘膜を挙上している状態を示す正面図である。図10は、内視鏡用粘膜挙上具30が粘膜を挙上している状態を示す背面図であり、内視鏡10の内視鏡画像の視野方向に見たときの粘膜の挙上状態を示す。
これにより、図4に示すように、病変粘膜部位P1の粘膜層P2に開口P3が形成される。開口P3の大きさは、図5に示すように、第一押さえ部33の遠位端33aと第二押さえ部34の遠位端34aとの距離より大きければよい。
これにより、粘膜下層P5と筋層P6との間に第一押さえ部33及び第二押さえ部34が導入される。このとき、図7に示すように、第一押さえ部33及び第二押さえ部34は筋層P6に接し、第一挙上部35及び第二挙上部36は粘膜下層P5に接している。筋層P6が第一押さえ部33及び第二押さえ部34により保持されることで、術場が平坦に近くなる。第一挙上部35及び第二挙上部36は粘膜下層P5が筋層P6から離間するように粘膜下層P5を押し上げた状態で保持する。
第二挙上部36と第二支持部42との間に粘膜下層P5が入り込んでいるときに、第二挙上部36の外面は粘膜下層P5を押し上げる押上面となっている。また、第二挙上部36と第二支持部42との間に粘膜下層P5が入り込んでいるときに、第二支持部42の外面は粘膜下層P5を押し下げる押下面となっている。
次に、本実施形態のESD処置システム1の変形例について説明する。図11は、ESD処置システム1の変形例の構成及び使用態様を示す側面図である。図12は、本変形例のESD処置システム1Aに適用される内視鏡用粘膜挙上具を示す斜視図である。
図11及び図12に示すように、本変形例のESD処置システム1Aは、第一支持部41及び第二支持部42に代えて、第一支持部41の遠位端41a及び第二支持部42の遠位端42aよりもさらに遠位端側に長く延びた第一支持部41A及び第二支持部42Aを備える点で上記実施形態のESD処置システム1と構成が異なる。
第二支持部42Aの遠位端42aAは、第一挙上部35と第二挙上部36とが重なる方向から見たときに第二押さえ部34の遠位端34aよりもさらに遠位端側に位置している。
たとえば、上記実施形態に係る内視鏡用粘膜挙上具30は、第一挙上部35と第二挙上部36とを連結する連結部37、及び第一支持部41と第二支持部42とを連結する連結部43を備えていなくてもよい。
10 内視鏡
11 挿入部
30 内視鏡用粘膜挙上具
31 挙上具本体
32 挙上部材
33 第一押さえ部
34 第二押さえ部
35 第一挙上部
36 第二挙上部
37 連結部
40 押下部材
41,41A 第一支持部
42,42A 第二支持部
43 連結部
44 取付部材
50 高周波ナイフ(内視鏡用切開具)
51 処置具挿入部
52 シース
53 切開電極
54 給電ワイヤ
55 処置具操作部
56 操作部本体
Claims (8)
- 内視鏡の遠位端部から突出され、かつ、組織を挙上させるために所定の幅を持つ押上面を有する挙上部と、
前記内視鏡の遠位端部から突出された位置で、前記挙上部の外側面から外方に隙間を空けて離間して設けられた第一支持部と、
前記内視鏡の遠位端部から突出された位置で、前記挙上部に対して前記第一支持部と対向する位置に前記挙上部の外側面から外方に隙間を空けて離間して設けられた第二支持部と、
を備え、
前記第一支持部および前記第二支持部は、前記挙上部の前記押上面によって押上される組織の周辺組織を押下するために所定の幅を持つ押下面を有する、
内視鏡用粘膜挙上具。 - 前記内視鏡は、所定の中心軸を有する長尺の挿入部を備え、
前記挙上部は、前記挿入部の前記遠位端部より前記中心軸に沿ってさらに遠位側の位置に前記押上面を有している
請求項1に記載の内視鏡用粘膜挙上具。 - 前記挙上部、前記第一支持部、及び前記第二支持部は棒状である請求項1に記載の内視鏡用粘膜挙上具。
- 前記挙上部を前記内視鏡に連結するために前記挙上部と繋がって設けられ前記押上面に対して傾斜した押さえ面を有する押さえ部をさらに備える
請求項1に記載の内視鏡用粘膜挙上具。 - 前記第一支持部及び前記第二支持部は前記内視鏡の遠位端部から前記挙上部に対して傾斜して延びている
請求項1に記載の内視鏡用粘膜挙上具。 - 前記挙上部は、
互いに離間する第一挙上部及び第二挙上部と、
前記第一挙上部の近位端と前記第二挙上部の近位端とを連結する連結部と、
を有する
請求項1に記載の内視鏡用粘膜挙上具。 - 前記第一支持部の遠位端と前記第二支持部の遠位端とを連結する連結部をさらに備える
請求項1に記載の内視鏡用粘膜挙上具。 - 請求項1に記載の内視鏡用粘膜挙上具と、前記内視鏡用粘膜挙上具が取り付けられる内視鏡と、を備える内視鏡処置システム。
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CN201580022393.9A CN106455912B (zh) | 2014-05-02 | 2015-04-30 | 内窥镜用粘膜提起器具及内窥镜处置系统 |
JP2015553965A JP6013625B2 (ja) | 2014-05-02 | 2015-04-30 | 内視鏡用粘膜挙上具及び内視鏡処置システム |
EP15785612.1A EP3138462A4 (en) | 2014-05-02 | 2015-04-30 | Mucous membrane elevation instrument for endoscope and endoscope treatment system |
US15/336,356 US9820725B2 (en) | 2014-05-02 | 2016-10-27 | Mucous membrane lifting instrument for endoscope and endoscope treatment system |
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CN108143445A (zh) * | 2016-12-02 | 2018-06-12 | 天津市人民医院 | 胃镜辅助剥离件及其推送装置 |
WO2021181552A1 (ja) * | 2020-03-11 | 2021-09-16 | オリンパス株式会社 | 電極ユニット及び電極ユニットの操作方法 |
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JP1576778S (ja) * | 2016-10-05 | 2017-05-22 | ||
US11039850B2 (en) | 2018-02-28 | 2021-06-22 | Gi Supply | Endoscopic tool with suction for facilitating injection of a fluid into a submucosal layer of tissue |
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CN108143445B (zh) * | 2016-12-02 | 2024-02-23 | 天津市人民医院 | 胃镜辅助剥离件及其推送装置 |
WO2021181552A1 (ja) * | 2020-03-11 | 2021-09-16 | オリンパス株式会社 | 電極ユニット及び電極ユニットの操作方法 |
Also Published As
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EP3138462A4 (en) | 2017-12-27 |
US9820725B2 (en) | 2017-11-21 |
EP3138462A1 (en) | 2017-03-08 |
CN106455912B (zh) | 2018-05-04 |
US20170042522A1 (en) | 2017-02-16 |
JPWO2015166980A1 (ja) | 2017-04-20 |
JP6013625B2 (ja) | 2016-10-25 |
CN106455912A (zh) | 2017-02-22 |
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