WO2021166085A1 - Endoscope - Google Patents

Endoscope Download PDF

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Publication number
WO2021166085A1
WO2021166085A1 PCT/JP2020/006357 JP2020006357W WO2021166085A1 WO 2021166085 A1 WO2021166085 A1 WO 2021166085A1 JP 2020006357 W JP2020006357 W JP 2020006357W WO 2021166085 A1 WO2021166085 A1 WO 2021166085A1
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WO
WIPO (PCT)
Prior art keywords
treatment tool
raising table
endoscope
ultrasonic
opening
Prior art date
Application number
PCT/JP2020/006357
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English (en)
Japanese (ja)
Inventor
仁 平岡
威晴 中里
Original Assignee
オリンパス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
Priority to PCT/JP2020/006357 priority Critical patent/WO2021166085A1/fr
Publication of WO2021166085A1 publication Critical patent/WO2021166085A1/fr

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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
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments

Definitions

  • the present invention relates to an endoscope.
  • an endoscope that is inserted into a subject to observe the test site is known and is widely used in the medical field and the like.
  • Some endoscopes in recent years are provided with a treatment tool raising table for directing a treatment tool such as a puncture needle for treating the inside of a subject toward the affected area.
  • Patent Document 1 discloses an endoscope provided with a treatment tool raising table having a narrow engagement groove and a wide engagement groove, and allowing treatment tools having different diameters to project in a predetermined direction. Since this endoscope is a side-view type, treatment tools having different diameters are projected in a direction substantially perpendicular to the longitudinal direction of the insertion portion.
  • the present invention has been made in view of the above, and provides an endoscope capable of projecting treatment tools having different diameters in a desired direction in a perspective type endoscope or an ultrasonic endoscope.
  • the purpose is.
  • the endoscope uses a treatment tool inserted from the base end side of the treatment tool insertion passage provided inside the insertion portion.
  • a hard portion having an opening protruding toward the tip side and a groove provided on the tip side of the opening, and a hard portion housed in the groove portion, which is housed in the groove portion and rises according to an operation received by the operation portion to perform the above-mentioned treatment.
  • a treatment tool raising table that changes the direction in which the tool protrudes from the opening, and intersects a first surface that holds the first treatment tool in a state of protruding in a predetermined protrusion direction, and the first surface. It is provided with a treatment tool raising table on which a second surface is formed, which is a surface and holds a second treatment tool having an outer diameter smaller than that of the first treatment tool in a state of projecting in the projecting direction.
  • the protruding direction passes through the region optically observed by the endoscope.
  • the endoscope according to one aspect of the present invention includes an ultrasonic vibrator that transmits and receives ultrasonic waves, and the protruding direction passes through a region for ultrasonic observation by the ultrasonic vibrator.
  • a slit is formed in the treatment tool raising table from the tip toward the proximal end side, and the second surface is formed on the bottom surface of the slit. Has been done.
  • the center in the width direction is located in the observation surface for ultrasonic observation by the ultrasonic vibrator from the tip to the proximal end side.
  • a matching slit is formed, and the second surface is formed on the bottom surface of the slit.
  • a third surface along the protruding direction is formed in the opening.
  • a semicircular guide groove having a diameter smaller than that of the treatment tool insertion passage is formed in the opening, and the third surface is the guide. It is formed on the bottom surface of the groove.
  • the treatment tool raising table is on the side on which the treatment tool raising table rises on the second surface, or the side on which the treatment tool raising table rises.
  • a curved surface connected to the second surface is formed on the opposite side of the above.
  • the treatment tool raising table is a guide portion projecting from both sides of the first surface in the direction in which the treatment tool raising table rises. Has.
  • the opening accommodates the guide portion in a state where the treatment tool raising table is raised.
  • the present invention in a perspective type endoscope or an ultrasonic endoscope, it is possible to realize an endoscope capable of projecting treatment tools having different diameters in a desired direction.
  • FIG. 1 is a schematic view showing a configuration of an endoscope according to an embodiment.
  • FIG. 2 is a top view of the tip of the ultrasonic endoscope shown in FIG.
  • FIG. 3 is a view taken along the arrow A of FIG.
  • FIG. 4 is a cross-sectional view corresponding to line BB of FIG.
  • FIG. 5 is a diagram showing how the treatment tool raising table holds the puncture needle, which is the first treatment tool.
  • FIG. 6 is a diagram showing a state in which the treatment tool raising table holds the guide wire which is the second treatment tool.
  • FIG. 7 is a diagram showing a state in which the treatment tool raising table in the ultrasonic endoscope of the first modification holds the guide wire.
  • FIG. 1 is a schematic view showing a configuration of an endoscope according to an embodiment.
  • FIG. 2 is a top view of the tip of the ultrasonic endoscope shown in FIG.
  • FIG. 3 is a view taken along the arrow A of FIG.
  • FIG. 8 is a cross-sectional view of the tip of the ultrasonic endoscope of the second modification.
  • FIG. 9 is a diagram showing a state in which the treatment tool raising table in the ultrasonic endoscope of the second modification holds the large-diameter guide wire.
  • FIG. 10 is a diagram showing a state in which the treatment tool raising table in the ultrasonic endoscope of the second modification holds the small-diameter guide wire.
  • FIG. 11 is a partial cross-sectional view of the tip portion.
  • FIG. 12 is a diagram showing a state in which the lid is assembled to the hard portion.
  • FIG. 13 is an enlarged view of the cover of FIG.
  • FIG. 14 is a diagram showing how the cover is assembled to the hard portion 22.
  • FIG. 15 is an overall view of the treatment tool raising table cleaning tool.
  • FIG. 16 is an exploded view of the cover member shown in FIG.
  • FIG. 17 is a diagram showing the connecting member shown in FIG.
  • FIG. 18 is a cross-sectional view in which the cover member shown in FIG. 15 is attached to the tip of the ultrasonic endoscope.
  • FIG. 19 is a diagram showing a state in which the treatment tool raising table is fixed to the rotating shaft.
  • FIG. 1 is a schematic view showing a configuration of an endoscope according to an embodiment.
  • an imaging unit is arranged at the tip thereof, and an insertion portion 2 to be inserted into a subject and a series of insertion portions 2 are provided on the proximal end side of the insertion portion 2.
  • the operation unit 3 and the universal cord 4 extending from the side portion of the operation unit 3 and the observation device and the ultrasonic endoscope 1 which are connected to the universal cord 4 and control the ultrasonic endoscope 1
  • a connector portion 5 connected to a light source device or the like for supplying illumination light is provided.
  • the distal end side (opposite side to the operation unit 3) of the ultrasonic endoscope 1 in the longitudinal direction is the “tip side", and the proximal end side (operation unit 3 side) is. It is referred to as the "base end side”.
  • the ultrasonic endoscope 1 is a perspective type ultrasonic endoscope for the bronchus or the digestive tract.
  • the insertion portion 2 has, in order from the tip side, a tip portion 2a, a curved portion 2b configured to be bendable according to the operation of the operation portion 3, and a flexible flexible tube portion 2c.
  • the base end of the flexible pipe portion 2c is continuously provided on the tip end side of the operation portion 3.
  • the operation unit 3 is provided with a treatment tool insertion port 3a for inserting a forceps needle or the like, which is a treatment tool, into the subject.
  • a treatment tool insertion passage is provided inside the insertion portion 2, and the treatment tool insertion port 3a serves as an insertion port for the treatment tool insertion passage. That is, the ultrasonic endoscope 1 is an endoscope through which a treatment tool can be inserted.
  • FIG. 2 is a top view of the tip of the ultrasonic endoscope shown in FIG.
  • the ultrasonic endoscope 1 includes an ultrasonic vibrator 21, a hard portion 22, a treatment tool raising table 23, an illumination lens 24, an objective lens 25, and a nozzle 26.
  • FIG. 3 is a view taken along the arrow A of FIG. FIG. 2 corresponds to the arrow C view of FIG.
  • FIG. 4 is a cross-sectional view corresponding to line BB of FIG.
  • the ultrasonic endoscope 1 includes a rotation shaft 27 and a treatment tool insertion passage 28.
  • the ultrasonic vibrator 21 is a convex type ultrasonic vibrator, and has a plurality of piezoelectric elements regularly arranged so as to form a convex arc.
  • the ultrasonic vibrator 21 ultrasonically observes a cross section of the plurality of piezoelectric elements passing through the central portion (straight line C1 in FIG. 2) in the longitudinal direction.
  • the ultrasonic vibrator 21 is not limited to the convex type ultrasonic vibrator, and may be a linear type ultrasonic vibrator.
  • the ultrasonic vibrator 21 converts the pulse signal input from the ultrasonic observation device into an ultrasonic pulse and transmits it into the subject. Further, the ultrasonic transducer 21 receives the ultrasonic echo reflected in the subject, converts it into an electrical echo signal, and outputs it to the ultrasonic observation device.
  • the hard portion 22 has an opening 22a and a groove 22b.
  • the opening 22a projects the treatment tool inserted from the treatment tool insertion port 3a located on the base end side of the treatment tool insertion passage 28 provided inside the insertion portion 2 toward the tip end side of the tip portion 2a.
  • the opening 22a is a square opening larger than the diameter of the treatment tool insertion passage 28.
  • a semicircular guide groove 22aa having a diameter smaller than that of the treatment tool insertion passage 28 is formed in the opening 22a, and a third surface 22ab along the projecting direction described later is formed on the bottom surface of the guide groove 22aa.
  • the diameter of the guide groove 22aa is substantially equal to, for example, the diameter of the first treatment tool.
  • the tip end side of the third surface 22ab may have an R shape.
  • the groove 22b is provided on the tip end side of the opening 22a.
  • the gap between the hard portion 22 formed by the groove portion 22b and the treatment tool raising table 23 is the tip side (left side in FIG. 2), the base end side (right side in FIG. 2), and the treatment tool raising table 23.
  • the size is such that the bristles of the brush used for cleaning can be inserted on both sides (upper side and lower side of FIG. 2) in the longitudinal direction of the upper table 23.
  • this gap is preferably 0.2 mm or more.
  • the treatment tool raising table 23 is housed in the groove portion 22b, and rises in response to the operation received by the operation unit 3 to change the direction in which the treatment tool protrudes from the opening 22a.
  • the treatment tool raising table 23 has a first surface 23a, a second surface 23b, a slit 23c, a shaft hole 23d, and a guide portion 23e.
  • the first surface 23a holds the first treatment tool in a state of projecting in a predetermined direction (hereinafter, referred to as "protruding direction"). As shown in FIG. 3, the first surface 23a is a surface curved around the central axis C1 of the treatment tool raising table 23.
  • the second surface 23b is a surface that intersects the first surface 23a, and holds the second treatment tool having an outer diameter smaller than that of the first treatment tool in a protruding state.
  • the second surface 23b is formed on the bottom surface of the slit 23c.
  • the slit 23c is formed from the tip end side of the treatment tool raising table 23 toward the base end side.
  • the width of the slit 23c is substantially equal to the outer diameter of the second treatment tool.
  • the second surface 23b is a surface curved around the central axis C1 of the treatment tool raising table 23.
  • the shape of the slit 23c is, for example, U-shaped, but it may be V-shaped.
  • a rotating shaft 27 is inserted into the shaft hole 23d.
  • the cross section of the shaft hole 23d and the rotating shaft 27 has a D-cut shape with a part of the circumference cut out, and is fixed so as to fit each other and not rotate relatively.
  • the guide portions 23e project from both sides of the first surface 23a in the direction in which the treatment tool raising table 23 rises, and guide the treatment tool protruding from the opening 22a.
  • the illumination lens 24 irradiates the subject with the illumination light emitted by the light source device via the light guide.
  • the objective lens 25 collects the light reflected in the subject and forms an image on the image pickup surface of the image pickup device.
  • the image signal generated in the image sensor is transmitted to the endoscopic observation device via the signal cable.
  • the nozzle 26 discharges a fluid such as water toward the objective lens 25 to clean the dirt adhering to the objective lens 25.
  • the rotating shaft 27 rotates via an operation wire (not shown) in response to the operation received by the operation unit 3 to raise the treatment tool raising table 23.
  • the treatment tool insertion passage 28 projects the treatment tool inserted from the treatment tool insertion port 3a from the opening 22a of the tip portion 2a.
  • the ultrasonic endoscope 1 has, for example, a puncture needle having a thickness of 0.70 mm to 1.29 mm as a first treatment tool, and a second treatment tool having an outer diameter smaller than that of the first treatment tool, for example, a thickness of 0.
  • a 035 inch or 0.025 inch guide wire can be projected in a predetermined protruding direction.
  • the first treatment tool and the second treatment tool are not limited to the puncture needle and the guide wire, and may be any treatment tool having a different diameter.
  • FIG. 5 is a diagram showing how the treatment tool raising table holds the puncture needle, which is the first treatment tool.
  • the first surface 23a holds the puncture needle 101 in a protruding state.
  • the puncture needle 101 is sandwiched and held between the first surface 23a and the third surface 22ab.
  • the rotation of the treatment tool raising table 23 is restricted by the puncture needle 101, and the puncture needle 101 is on the first surface. It is in a state of being sandwiched and held between the 23a and the third surface 22ab.
  • the protruding direction of the puncture needle 101 passes through the region D1 optically observed by the ultrasonic endoscope 1 located diagonally forward of the opening 22a.
  • the protruding direction of the puncture needle 101 preferably passes through the central portion of the easily observable region D1.
  • the central axis of 23 is located on the straight line C1.
  • the puncture needle 101 protrudes into the plane for ultrasonic observation.
  • the protruding direction of the puncture needle 101 passes through the region D2 for ultrasonic observation by the ultrasonic vibrator 21.
  • the protruding direction of the puncture needle 101 preferably passes through the central portion of the easily observable region D2.
  • the puncture needle 101 can be projected in a protruding direction capable of optical observation and ultrasonic observation.
  • FIG. 6 is a diagram showing a state in which the treatment tool raising table holds the guide wire which is the second treatment tool.
  • the second surface 23b holds the guide wire 102 in a protruding state.
  • the treatment tool raising table 23 is in a state of being further rotated than the position where the puncture needle 101 is held, and the guide wire 102 is sandwiched and held between the second surface 23b and the third surface 22ab. There is.
  • the treatment tool raising table 23 is raised with the guide wire 102 protruding from the opening 22a, the guide wire 102 enters the slit 23c, so that the rotation of the treatment tool raising table 23 is not restricted and the treatment tool is raised.
  • the riser 23 is in the maximum raised state.
  • the guide wire 102 is sandwiched and held between the second surface 23b and the third surface 22ab.
  • the protruding direction of the guide wire 102 passes through the region D1 optically observed by the ultrasonic endoscope 1 located diagonally forward of the opening 22a.
  • the observation surface by ultrasonic waves corresponding to the central axis of the ultrasonic vibrator 21 and the central axis of the slit 23c are on a straight line C1.
  • the treatment tool raising table 23 is formed with a slit 23c whose center in the width direction coincides with the observation surface for ultrasonic observation by the ultrasonic vibrator 21 from the tip to the proximal end side.
  • the guide wire 102 protrudes into the plane for ultrasonic observation.
  • the protruding direction of the guide wire 102 passes through the region D2 for ultrasonic observation by the ultrasonic vibrator 21.
  • the treatment tool raising table 23 may not have the slit 23c formed as long as the guide wire 102 can be held by the second surface 23b.
  • the opening 22a is a square opening larger than the diameter of the treatment tool insertion passage 28, and guides provided on both sides of the treatment tool raising table 23 in a state where the treatment tool raising table 23 is maximally raised. Accommodates the unit 23e.
  • the guide wire 102 can be projected in a protruding direction that allows optical observation and ultrasonic observation, similarly to the puncture needle 101.
  • the protruding direction of the puncture needle 101 and the protruding direction of the guide wire 102 may be any direction as long as they can be observed optically and ultrasonically, and may not be the same direction.
  • the puncture needle 101 and the guide wire 102 having different diameters can be projected in a protruding direction capable of optical observation and ultrasonic observation.
  • the ultrasonic endoscope 1 provided with the ultrasonic vibrator 21 has been described in the above-described embodiment, it may be applied to an endoscope having no ultrasonic vibrator 21. In this case, treatment tools having different diameters can be projected into the field of view of the perspective endoscope. Similarly, it may be applied to an endoscope having no imaging unit. In this case, treatment tools having different diameters can be projected into the field of view of the ultrasonic vibrator 21.
  • FIG. 7 is a diagram showing a state in which the treatment tool raising table in the ultrasonic endoscope of the first modification holds the guide wire.
  • the treatment tool raising table 23A in the tip portion 2Aa of the ultrasonic endoscope according to the first modification, the treatment tool raising table 23A has a second surface 23b on the side where the treatment tool raising table 23A rises.
  • An R-shaped curved surface 23Af connected to the surface 23b is formed. Since the curved surface 23Af is formed, the operation of raising the treatment tool raising table 23A becomes smooth.
  • the treatment tool raising table may have an R-shaped curved surface formed on the opposite side to the side on which the treatment tool raising table rises. In this case, the operation of accommodating the rising treatment tool raising table in the groove portion 22b becomes smooth.
  • FIG. 8 is a cross-sectional view of the tip of the ultrasonic endoscope of the second modification.
  • the treatment tool raising table 23B has a fourth surface that intersects with each other instead of the second surface 23b.
  • 23Bba and a fifth surface 23Bbb are formed.
  • the fourth surface 23Bba and the fifth surface 23Bbb are formed on the bottom surface of the slit 23c.
  • the width of the slit 23c is formed so as to be gradually narrowed so that a large-diameter portion substantially equal to the large-diameter guide wire described later and a small-diameter portion substantially equal to the small-diameter guide wire described later are formed. Has been done.
  • FIG. 9 is a diagram showing a state in which the treatment tool raising table in the ultrasonic endoscope of the second modification holds the large-diameter guide wire.
  • the fourth surface 23Bba holds the large-diameter guide wire 103 in a state of projecting in the projecting direction.
  • the large diameter guide wire 103 is, for example, a guide wire having a thickness of 0.035 inches.
  • the treatment tool raising table 23 is in a state of being raised further than the position where the puncture needle 101 is held, and the large diameter guide wire 103 is sandwiched between the fourth surface 23Bba and the third surface 22ab. It is held.
  • the large-diameter guide wire 103 enters the large-diameter portion of the slit 23c, but the small-diameter portion Since it cannot enter, the rotation of the treatment tool raising table 23 is restricted by the large diameter guide wire 103, and the large diameter guide wire 103 is sandwiched and held between the fourth surface 23Bba and the third surface 22ab. ..
  • the protruding direction of the large-diameter guide wire 103 passes through the region D1 optically observed by the ultrasonic endoscope located diagonally forward of the opening 22a.
  • the protruding direction of the large-diameter guide wire 103 passes through the region D2 for ultrasonic observation by the ultrasonic vibrator 21.
  • the large-diameter guide wire 103 can be projected in a protruding direction capable of optical observation and ultrasonic observation.
  • FIG. 10 is a diagram showing a state in which the treatment tool raising table in the ultrasonic endoscope of the second modification holds the small-diameter guide wire.
  • the fifth surface 23Bbb holds the small diameter guide wire 104 in a protruding state in the protruding direction.
  • the small diameter guide wire 104 is, for example, a guide wire having a thickness of 0.025 inches.
  • the treatment tool raising table 23 is in a state of being raised further than the position where the large diameter guide wire 103 is held, and the small diameter guide wire 104 is sandwiched between the fifth surface 23Bbb and the third surface 22ab. Is held.
  • the small diameter guide wire 104 enters the small diameter portion of the slit 23c, so that the treatment tool raising table 23
  • the rotation of the device is not restricted, and the treatment tool raising table 23 is in a state of being raised to the maximum.
  • the small diameter guide wire 104 is sandwiched and held between the fifth surface 23Bbb and the third surface 22ab.
  • the protruding direction of the small-diameter guide wire 104 passes through the region D1 optically observed by the ultrasonic endoscope located diagonally forward of the opening 22a.
  • the protruding direction of the small-diameter guide wire 104 passes through the region D2 for ultrasonic observation by the ultrasonic vibrator 21.
  • the small-diameter guide wire 104 can be projected in a protruding direction capable of optical observation and ultrasonic observation.
  • the puncture needle 101, the large diameter guide wire 103, and the small diameter guide wire 104 having different diameters can be optically observed and ultrasonically observed in a protruding direction. Can be projected to.
  • FIG. 11 is a partial cross-sectional view of the tip portion. Specifically, FIG. 11 is a cross-sectional view of the inside of the lid 110 shown in FIG.
  • the lid 110 is located at the other end of a protrusion 110a projecting from one end of the lid 110, a claw portion 110b provided at the tip of the protrusion 110a, and a convex portion locked to the locking portion 22d. It has 110c.
  • the lid 110 is made of, for example, resin.
  • a locking member 111 is fixed to the recess 22c of the hard portion 22 by adhesion or the like.
  • the locking member 111 is formed with a locking hole 111a for locking the claw portion 110b.
  • the locking member 111 is made of, for example, a metal or alloy.
  • the cover 112 has a through hole 112a into which the screw 113 is inserted and a convex portion 112b that is locked to the locking portion 22d.
  • FIG. 12 is a diagram showing how the lid is assembled to the hard portion.
  • the lid 110 is assembled to the hard portion 22 by locking the claw portion 110b to the locking hole 111a in a state where the convex portion 110c is locked to the locking portion 22d.
  • the lid 110 is fixed to the hard portion 22 by adhesion, and the claw portion 110b is mechanically fixed by being locked in the locking hole 111a.
  • the lid 110 is fixed to the hard portion 22 even when the adhesive is applied unevenly or the adhesive is deteriorated.
  • FIG. 13 is an enlarged view of the cover of FIG.
  • FIG. 14 is a diagram showing how the cover is assembled to the hard portion 22.
  • the cover 112 is attached to the hard portion 22 by screwing the screw 113 inserted through the through hole 112a into the screw hole 22e in a state where the convex portion 112b is locked to the locking portion 22d. It is fixed. At this time, since the convex portion 112b is locked to the locking portion 22d, the cover 112 is prevented from rotating due to screwing.
  • FIG. 15 is an overall view of the treatment tool raising table cleaning tool.
  • the treatment tool raising table cleaning tool 120 has a base 121, a tube 122, a cover member 123, and a connecting member 124.
  • the base 121 is connected to an external water pump.
  • the tube 122 sends the water injected from the mouthpiece 121 to the tip.
  • FIG. 16 is an exploded view of the cover member shown in FIG.
  • the cover member 123 has an upper cover 1231 and a lower cover 1232.
  • the upper cover 1231 includes a connecting portion 1231a to which the tube 122 is connected, a hinge portion 1231b that fits into the hinge portion 1232a, a connecting member inserting portion 1231c into which the connecting member 124 is inserted, and a part of the connecting member inserting portion 1231c. It has a notch 1231d formed in the.
  • the lower cover 1232 includes a hinge portion 1232a that fits with the hinge portion 1231b, a connecting member insertion portion 1232b into which the connecting member 124 is inserted, and a notch portion 1232c formed in a part of the connecting member insertion portion 1232b. Have.
  • the upper cover 1231 and the lower cover 1232 are connected to each other by fitting the hinge portion 1231b and the hinge portion 1232a. Further, the upper cover 1231 and the lower cover 1232 are connected by a connecting member 124, and are prevented from being separated when the hinge portion 1231b and the hinge portion 1232a are removed.
  • FIG. 17 is a diagram showing the connecting member shown in FIG.
  • the connecting member 124 includes a retaining member 124a for preventing the connecting member 124 from falling off from the connecting member inserting portion 1231c of the upper cover 1231 and the connecting member inserting portion 1232b of the lower cover 1232, and a retaining portion 124a. It has a large-diameter portion 124b connected to the portion 124a and a small-diameter portion 124c provided at the center of the connecting member 124.
  • the connecting member 124 can be attached to the upper cover 1231 and the lower cover 1232. Further, when cleaning the treatment tool raising table cleaning tool 120, the small diameter portion 124c is inserted into the notch portion 1231d of the upper cover 1231 and the notch portion 1232c of the lower cover 1232, and the small diameter portion 124c is connected from the upper cover 1231 and the lower cover 1232. By removing the member 124, the upper cover 1231, the lower cover 1232, and the connecting member 124 can be separated and cleaned.
  • FIG. 18 is a cross-sectional view in which the cover member shown in FIG. 15 is attached to the tip of the ultrasonic endoscope.
  • the upper cover 1231 is formed with an injection port 1231e and an injection port 1231f. Then, the water injected from the connecting portion 1231a is ejected from the injection port 1231e and the injection port 1231f toward the gap 22ba on the tip end side of the treatment tool raising table 23 and the gap 22bb on the base end side of the treatment tool raising table 23, respectively. Will be done.
  • the gap 22ba and the gap 22bb are cleaned by the water pressure of the water injected from the mouthpiece 121, it is uniformly appropriate regardless of the skill level and skill of the cleaning operator. Can be cleaned.
  • FIG. 19 is a diagram showing a state in which the treatment tool raising table is fixed to the rotating shaft.
  • the treatment tool raising table 23 is fixed to one end of the rotating shaft 27 by screwing the screw 131 into the screw hole 23g. Further, the screw hole 23g is sealed by adhering the screw hiding member 132.
  • the other end of the rotating shaft 27 is fixed to a housing 133 that rotates in response to an operation on the operating wire.
  • a flat surface is provided on a part of the columnar rotating shaft 27 so that the cross section has a D shape, and a conical groove 27a, which is a conical groove, is formed on this flat surface.
  • a conical portion 131a which is a conical protrusion, is formed at the tip of the screw 131.
  • the central axis E1 of the conical groove 27a is located slightly on the housing 133 side with respect to the central axis of the conical portion 131a.

Abstract

L'invention concerne un endoscope comportant: une partie rigide possédant une ouverture située à l'intérieur d'une partie d'insertion et qui permet qu'un instrument inséré à partir d'un côté extrémité de base d'un conduit d'insertion d'instrument dépasse au niveau extrémité avant, ainsi qu'une partie fente située côté extrémité avant de l'ouverture; et un érecteur d'instrument logé dans la fente et qui s'élève en réponse à la manipulation d'une partie de manipulation, et lequel érecteur modifie la direction dans laquelle l'instrument dépasse de l'ouverture. Cet érecteur est constitué d'une première face qui maintient un premier instrument dans une position définie dans laquelle cet instrument dépasse, et d'une deuxième face qui se croise avec la première face et qui maintient un deuxième instrument dans une position définie dans laquelle cet instrument dépasse, le deuxième instrument présentant un diamètre extérieur inférieur à celui du premier instrument. Ainsi il est possible, dans un endoscope à incidence oblique ou un endoscope ultrasonique, de faire dépasser dans une direction voulue des instruments dont le diamètre est différent.
PCT/JP2020/006357 2020-02-18 2020-02-18 Endoscope WO2021166085A1 (fr)

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PCT/JP2020/006357 WO2021166085A1 (fr) 2020-02-18 2020-02-18 Endoscope

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JP2007330756A (ja) * 2006-05-17 2007-12-27 Olympus Medical Systems Corp 内視鏡
JP2008017859A (ja) * 2006-07-10 2008-01-31 Olympus Medical Systems Corp 超音波内視鏡、該超音波内視鏡に用いられる処置具起上台
WO2018070508A1 (fr) * 2016-10-14 2018-04-19 Hoya株式会社 Capuchon endoscopique, endoscope, procédé de retrait de capuchon endoscopique
WO2018079790A1 (fr) * 2016-10-28 2018-05-03 オリンパス株式会社 Endoscope

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