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
Other languages
French (fr)
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/en
Publication of WO2021166085A1 publication Critical patent/WO2021166085A1/en

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

This endoscope comprises: a hard part having an opening which causes a treatment tool, which is inserted from a base end side of a treatment tool insertion passage provided inside an insertion part, to protrude toward a distal end side, and a groove provided in the distal end side of the opening; and a treatment tool rising base which is accommodated in the groove, rises in accordance with an operation received by an operation unit, changes the direction in which the treatment tool protrudes from the opening, and has formed thereon a first surface for holding a first treatment tool in a state protruding in a predetermined protrusion direction, and a second surface which intersects the first surface and holds a second treatment tool in a state protruding in the protrusion direction, the second treatment tool having a smaller outer diameter than the first treatment tool. The foregoing provides an oblique-viewing endoscope or ultrasonic endoscope that can cause treatment tools with different diameters to protrude in the desired direction.

Description

内視鏡Endoscope
　本発明は、内視鏡に関する。 The present invention relates to an endoscope.
　従来、被検体内に挿入されて被検部位の観察等を行う内視鏡が知られており、医療分野等で広く利用されている。近年の内視鏡には、被検体内の処置を行なう穿刺針等の処置具を患部へ向けるための処置具起上台を備えたものがある。 Conventionally, 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.
　特許文献１には、狭幅係合溝と広幅係合溝とを有する処置具起上台を備え、径の異なる処置具を所定の方向に突出させる内視鏡が開示されている。この内視鏡は、側視型であるため、径の異なる処置具をそれぞれ挿入部の長手方向と略垂直な方向に突出させる。 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.
特開２００４－２６７５９６号公報Japanese Unexamined Patent Publication No. 2004-267596
　しかしながら、斜視型の内視鏡では、処置具を斜め前方の視野方向に突出させる必要がある。また、超音波内視鏡では、超音波による観察面内に処置具を突出させる必要がある。 However, with a squint-type endoscope, it is necessary to project the treatment tool diagonally forward in the visual field direction. Further, in an ultrasonic endoscope, it is necessary to project a treatment tool into the observation surface by ultrasonic waves.
　本発明は、上記に鑑みてなされたものであって、斜視型の内視鏡又は超音波内視鏡において、径が異なる処置具を所望の方向に突出させることができる内視鏡を提供することを目的とする。 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.
　上述した課題を解決し、目的を達成するために、本発明の一態様に係る内視鏡は、挿入部の内部に設けられている処置具挿通路の基端側から挿入された処置具を先端側に突出させる開口部、及び前記開口部の先端側に設けられている溝部を有する硬質部と、前記溝部に収容されており、操作部が受け付けた操作に応じて起上し、前記処置具が前記開口部から突出する方向を変える処置具起上台であって、第１の処置具を所定の突出方向に突出する状態に保持する第１の面、及び前記第１の面に交差する面であり、前記第１の処置具より外径が小さい第２の処置具を前記突出方向に突出する状態に保持する第２の面が形成されている処置具起上台と、を備える。 In order to solve the above-mentioned problems and achieve the object, the endoscope according to one aspect of the present invention 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.
　また、本発明の一態様に係る内視鏡は、前記突出方向は、当該内視鏡が光学的に観察する領域を通過する。 Further, in the endoscope according to one aspect of the present invention, the protruding direction passes through the region optically observed by the endoscope.
　また、本発明の一態様に係る内視鏡は、超音波を送受信する超音波振動子を備え、前記突出方向は、前記超音波振動子により超音波観察する領域を通過する。 Further, 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.
　また、本発明の一態様に係る内視鏡は、前記処置具起上台には、先端から基端側に向かってスリットが形成されており、前記第２の面は、前記スリットの底面に形成されている。 Further, in the endoscope according to one aspect of the present invention, 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.
　また、本発明の一態様に係る内視鏡は、前記処置具起上台には、先端から基端側に向かって、幅方向の中心が前記超音波振動子により超音波観察する観察面内に一致するスリットが形成されており、前記第２の面は、前記スリットの底面に形成されている。 Further, in the endoscope according to one aspect of the present invention, on the treatment tool raising table, 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.
　また、本発明の一態様に係る内視鏡は、前記開口部には、前記突出方向に沿った第３の面が形成されている。 Further, in the endoscope according to one aspect of the present invention, a third surface along the protruding direction is formed in the opening.
　また、本発明の一態様に係る内視鏡は、前記開口部には、前記処置具挿通路より径が小さい半円状のガイド溝が形成されており、前記第３の面は、前記ガイド溝の底面に形成されている。 Further, in the endoscope according to one aspect of the present invention, 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.
　また、本発明の一態様に係る内視鏡は、前記処置具起上台には、前記第２の面の前記処置具起上台が起上する側、又は前記処置具起上台が起上する側の反対側に前記第２の面に接続する曲面が形成されている。 Further, in the endoscope according to one aspect of the present invention, 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.
　また、本発明の一態様に係る内視鏡は、前記処置具起上台は、当該処置具起上台が起上する方向に向かって前記第１の面の両側部に突設されているガイド部を有する。 Further, in the endoscope according to one aspect of the present invention, 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.
　また、本発明の一態様に係る内視鏡は、前記開口部は、前記処置具起上台が起上した状態において、前記ガイド部を収容する。 Further, in the endoscope according to one aspect of the present invention, the opening accommodates the guide portion in a state where the treatment tool raising table is raised.
　本発明によれば、斜視型の内視鏡又は超音波内視鏡において、径が異なる処置具を所望の方向に突出させることができる内視鏡を実現することができる。 According to 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.
図１は、実施の形態に係る内視鏡の構成を示す模式図である。FIG. 1 is a schematic view showing a configuration of an endoscope according to an embodiment. 図２は、図１に示す超音波内視鏡の先端部の上面図である。FIG. 2 is a top view of the tip of the ultrasonic endoscope shown in FIG. 図３は、図２のＡ矢視図である。FIG. 3 is a view taken along the arrow A of FIG. 図４は、図２のＢ－Ｂ線に対応する断面図である。FIG. 4 is a cross-sectional view corresponding to line BB of FIG. 図５は、処置具起上台が第１の処置具である穿刺針を保持する様子を表す図である。FIG. 5 is a diagram showing how the treatment tool raising table holds the puncture needle, which is the first treatment tool. 図６は、処置具起上台が第２の処置具であるガイドワイヤを保持する様子を表す図である。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. 図７は、変形例１の超音波内視鏡における処置具起上台がガイドワイヤを保持する様子を表す図である。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. 図８は、変形例２の超音波内視鏡の先端部の断面図である。FIG. 8 is a cross-sectional view of the tip of the ultrasonic endoscope of the second modification. 図９は、変形例２の超音波内視鏡における処置具起上台が太径ガイドワイヤを保持する様子を表す図である。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. 図１０は、変形例２の超音波内視鏡における処置具起上台が細径ガイドワイヤを保持する様子を表す図である。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. 図１１は、先端部の部分断面図である。FIG. 11 is a partial cross-sectional view of the tip portion. 図１２は、蓋を硬質部に組み付ける様子を表す図である。FIG. 12 is a diagram showing a state in which the lid is assembled to the hard portion. 図１３は、図１２のカバーを拡大した図である。FIG. 13 is an enlarged view of the cover of FIG. 図１４は、カバーを硬質部２２に組み付ける様子を表す図である。FIG. 14 is a diagram showing how the cover is assembled to the hard portion 22. 図１５は、処置具起上台洗浄具の全体図である。FIG. 15 is an overall view of the treatment tool raising table cleaning tool. 図１６は、図１５に示すカバー部材の分解図である。FIG. 16 is an exploded view of the cover member shown in FIG. 図１７は、図１５に示す連結部材を表す図である。FIG. 17 is a diagram showing the connecting member shown in FIG. 図１８は、図１５に示すカバー部材を超音波内視鏡の先端部に取り付けた断面図である。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. 図１９は、処置具起上台を回転軸に固定する様子を表す図である。FIG. 19 is a diagram showing a state in which the treatment tool raising table is fixed to the rotating shaft.
　以下に、図面を参照して本発明に係る内視鏡の実施の形態を説明する。なお、これらの実施の形態により本発明が限定されるものではない。本発明は、処置具を用いる内視鏡一般に適用することができる。 Hereinafter, embodiments of the endoscope according to the present invention will be described with reference to the drawings. The present invention is not limited to these embodiments. The present invention can be generally applied to endoscopes using treatment tools.
　また、図面の記載において、同一又は対応する要素には適宜同一の符号を付している。また、図面は模式的なものであり、各要素の寸法の関係、各要素の比率などは、現実と異なる場合があることに留意する必要がある。図面の相互間においても、互いの寸法の関係や比率が異なる部分が含まれている場合がある。 Further, in the description of the drawings, the same or corresponding elements are appropriately designated by the same reference numerals. In addition, it should be noted that the drawings are schematic, and the dimensional relationship of each element, the ratio of each element, and the like may differ from the reality. Even between drawings, there may be parts with different dimensional relationships and ratios.
（実施の形態）
〔超音波内視鏡の構成〕
　図１は、実施の形態に係る内視鏡の構成を示す模式図である。実施の形態に係る内視鏡としての超音波内視鏡１は、先端に撮像部が配設され、被検体内に挿入される挿入部２と、この挿入部２の基端側に連設された操作部３と、この操作部３の側部から延出するユニバーサルコード４と、ユニバーサルコード４に連設され、超音波内視鏡１を制御する観察装置及び超音波内視鏡１に照明光を供給するための光源装置等と接続されるコネクタ部５と、を備える。なお、本明細書において、図１に示すように、超音波内視鏡１の長手方向の先端側（操作部３と反対側）を「先端側」、基端側（操作部３側）を「基端側」とする。 (Embodiment)
[Construction of ultrasonic endoscope]
FIG. 1 is a schematic view showing a configuration of an endoscope according to an embodiment. In the ultrasonic endoscope 1 as an endoscope according to the 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. In the present specification, as shown in FIG. 1, 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".
　超音波内視鏡１は、気管支用又は消化管用の斜視型の超音波内視鏡である。 The ultrasonic endoscope 1 is a perspective type ultrasonic endoscope for the bronchus or the digestive tract.
　挿入部２は、先端側から順に、先端部２ａと、操作部３の操作に応じて湾曲自在に構成された湾曲部２ｂと、可撓性を有する可撓管部２ｃと、を有する。可撓管部２ｃの基端は、操作部３の先端側に連設されている。 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.
　操作部３には、処置具である鉗子針等を被検体内へと挿入するための処置具挿入口３ａが設けられている。挿入部２の内部には処置具挿通路が設けられており、処置具挿入口３ａは、処置具挿通路の挿入口になっている。すなわち、超音波内視鏡１は、処置具を挿通可能な内視鏡である。 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.
〔超音波内視鏡の先端部の構成〕
　図２は、図１に示す超音波内視鏡の先端部の上面図である。超音波内視鏡１は、超音波振動子２１と、硬質部２２と、処置具起上台２３と、照明レンズ２４と、対物レンズ２５と、ノズル２６と、を備える。図３は、図２のＡ矢視図である。図２は、図３のＣ矢視図に対応する。図４は、図２のＢ－Ｂ線に対応する断面図である。図４に示すように、超音波内視鏡１は、回転軸２７と、処置具挿通路２８と、を備える。 [Structure of the tip of the ultrasonic endoscope]
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. As shown in FIG. 4, the ultrasonic endoscope 1 includes a rotation shaft 27 and a treatment tool insertion passage 28.
　超音波振動子２１は、コンベックス型の超音波振動子であり、凸型の円弧を形成するように規則的に配列された複数の圧電素子を有する。超音波振動子２１は、複数の圧電素子の長手方向の中央部（図２の直線Ｃ１）を通る断面を超音波観察する。なお、超音波振動子２１は、コンベックス型の超音波振動子に限られず、リニア型の超音波振動子であってもよい。超音波振動子２１は、超音波観測装置から入力したパルス信号を超音波パルスに変換して被検体内に送信する。また、超音波振動子２１は、被検体内で反射された超音波エコーを受信し、電気的なエコー信号に変換して超音波観測装置に出力する。 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.
　硬質部２２は、開口部２２ａと、溝部２２ｂと、を有する。開口部２２ａは、挿入部２の内部に設けられている処置具挿通路２８の基端側に位置する処置具挿入口３ａから挿入された処置具を先端部２ａの先端側に突出させる。 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.
　開口部２２ａは、処置具挿通路２８の径よりも大きな方形の開口である。開口部２２ａには、処置具挿通路２８より径が小さい半円状のガイド溝２２ａａが形成されており、ガイド溝２２ａａの底面には、後述する突出方向に沿った第３の面２２ａｂが形成されている。ガイド溝２２ａａの径は、例えば第１の処置具の径と略等しい。第３の面２２ａｂの先端側には、Ｒ形状とされていてもよい。 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. Has been done. 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.
　溝部２２ｂは、開口部２２ａの先端側に設けられている。溝部２２ｂにより形成される硬質部２２と処置具起上台２３との間のすき間は、処置具起上台２３の先端側（図２の左側）、基端側（図２の右側）、処置具起上台２３の長手方向の両側（図２上側及び下側）において、洗浄に用いるブラシの毛を挿入可能な大きさであることが好ましい。具体的には、通常超音波内視鏡１の洗浄に用いるブラシの毛の太さは、０．２ｍｍであるため、このすき間は、０．２ｍｍ以上であることが好ましい。 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. It is preferable that 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. Specifically, since the thickness of the bristles of the brush usually used for cleaning the ultrasonic endoscope 1 is 0.2 mm, this gap is preferably 0.2 mm or more.
　処置具起上台２３は、溝部２２ｂに収容されており、操作部３が受け付けた操作に応じて起上し、処置具が開口部２２ａから突出する方向を変える。処置具起上台２３は、第１の面２３ａと、第２の面２３ｂと、スリット２３ｃと、軸穴２３ｄと、ガイド部２３ｅを有する。 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.
　第１の面２３ａは、第１の処置具を所定の方向（以下、「突出方向」という）に突出する状態に保持する。第１の面２３ａは、図３に示すように、処置具起上台２３の中心軸Ｃ１を中心として湾曲した面である。 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.
　第２の面２３ｂは、第１の面２３ａに交差する面であり、第１の処置具より外径が小さい第２の処置具を突出方向に突出する状態に保持する。第２の面２３ｂは、スリット２３ｃの底面に形成されている。スリット２３ｃは、処置具起上台２３の先端から基端側に向かって形成されている。スリット２３ｃの幅は、第２の処置具の外径に略等しい。第２の面２３ｂは、図２に示すように、処置具起上台２３の中心軸Ｃ１を中心として湾曲した面である。スリット２３ｃの形状は、例えばＵ字型であるが、Ｖ字型であってもよい。 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. As shown in FIG. 2, 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.
　軸穴２３ｄには、回転軸２７が挿入されている。軸穴２３ｄ及び回転軸２７の断面は、円周の一部を切り欠いたＤカット状の形状であり、互いに嵌合して相対的に回転しないように固定されている。 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.
　ガイド部２３ｅは、処置具起上台２３が起上する方向に向かって第１の面２３ａの両側部に突設されており、開口部２２ａから突出した処置具をガイドする。 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.
　照明レンズ２４は、ライトガイドを経由して光源装置が出射した照明光を被検体内に照射する。 The illumination lens 24 irradiates the subject with the illumination light emitted by the light source device via the light guide.
　対物レンズ２５は、被検体内において反射された光を集光し、撮像素子の撮像面に結像する。撮像素子において生成された画像信号は、信号ケーブルを経由して内視鏡観察装置に伝送される。 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.
　ノズル２６は、対物レンズ２５に向けて水等の流体を吐出し、対物レンズ２５に付着した汚れを洗浄する。 The nozzle 26 discharges a fluid such as water toward the objective lens 25 to clean the dirt adhering to the objective lens 25.
　回転軸２７は、操作部３が受け付けた操作に応じて不図示の操作ワイヤを介在して回転し、処置具起上台２３を起上させる。 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.
　処置具挿通路２８は、処置具挿入口３ａから挿入された処置具を先端部２ａの開口部２２ａから突出させる。 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.
〔処置具の突出方法〕
　超音波内視鏡１は、第１の処置具として例えば太さ０．７０ｍｍ～１．２９ｍｍの穿刺針と、第２の処置具として第１の処置具より外径が小さい例えば太さ０．０３５インチ又は０．０２５インチのガイドワイヤとを所定の突出方向に突出させることができる。ただし、第１の処置具及び第２の処置具は、穿刺針やガイドワイヤに限られず、径の異なる処置具であればよい。 [Protrusion method of treatment tool]
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. However, 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.
　図５は、処置具起上台が第１の処置具である穿刺針を保持する様子を表す図である。図５に示すように、第１の面２３ａは、穿刺針１０１を突出方向に突出する状態に保持する。このとき、穿刺針１０１は、第１の面２３ａと第３の面２２ａｂとに挟まれて保持されている。換言すると、穿刺針１０１を開口部２２ａから突出させた状態で処置具起上台２３を起上させると、穿刺針１０１によって処置具起上台２３の回転が規制され、穿刺針１０１が第１の面２３ａと第３の面２２ａｂとに挟まれて保持された状態となる。穿刺針１０１の突出方向は、開口部２２ａの斜め前方に位置する超音波内視鏡１が光学的に観察する領域Ｄ１を通過する。なお、穿刺針１０１の突出方向は、観察しやすい領域Ｄ１の中央部を通過することが好ましい。 FIG. 5 is a diagram showing how the treatment tool raising table holds the puncture needle, which is the first treatment tool. As shown in FIG. 5, the first surface 23a holds the puncture needle 101 in a protruding state. At this time, the puncture needle 101 is sandwiched and held between the first surface 23a and the third surface 22ab. In other words, when the treatment tool raising table 23 is raised with the puncture needle 101 protruding from the opening 22a, 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.
　また、図２及び図３に示すように、超音波内視鏡１において、超音波振動子２１の中心軸に対応する超音波による観察面と、開口部２２ａの中心軸と、処置具起上台２３の中心軸とは、直線Ｃ１上に位置している。その結果、穿刺針１０１は、超音波観察する面内に突出する。さらに、図５に示すように、穿刺針１０１の突出方向は、超音波振動子２１により超音波観察する領域Ｄ２を通過する。なお、穿刺針１０１の突出方向は、観察しやすい領域Ｄ２の中央部を通過することが好ましい。 Further, as shown in FIGS. 2 and 3, in the ultrasonic endoscope 1, the observation surface by ultrasonic waves corresponding to the central axis of the ultrasonic vibrator 21, the central axis of the opening 22a, and the treatment tool raising table. The central axis of 23 is located on the straight line C1. As a result, the puncture needle 101 protrudes into the plane for ultrasonic observation. Further, as shown in FIG. 5, 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.
　すなわち、超音波内視鏡１によれば、穿刺針１０１を光学的観察及び超音波観察可能な突出方向に突出させることができる。 That is, according to the ultrasonic endoscope 1, the puncture needle 101 can be projected in a protruding direction capable of optical observation and ultrasonic observation.
　図６は、処置具起上台が第２の処置具であるガイドワイヤを保持する様子を表す図である。図６に示すように、第２の面２３ｂは、ガイドワイヤ１０２を突出方向に突出する状態に保持する。このとき、処置具起上台２３は、穿刺針１０１を保持する位置よりもさらに回転した状態であり、ガイドワイヤ１０２は、第２の面２３ｂと第３の面２２ａｂとに挟まれて保持されている。換言すると、ガイドワイヤ１０２を開口部２２ａから突出させた状態で処置具起上台２３を起上させると、ガイドワイヤ１０２がスリット２３ｃに入り込むため、処置具起上台２３の回転が規制されず処置具起上台２３が最大起上した状態となる。このとき、ガイドワイヤ１０２は、第２の面２３ｂと第３の面２２ａｂとに挟まれて保持された状態となる。ガイドワイヤ１０２の突出方向は、開口部２２ａの斜め前方に位置する超音波内視鏡１が光学的に観察する領域Ｄ１を通過する。 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. As shown in FIG. 6, the second surface 23b holds the guide wire 102 in a protruding state. At this time, 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. In other words, when 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. At this time, 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.
　また、図２及び図３に示すように、超音波内視鏡１において、超音波振動子２１の中心軸に対応する超音波による観察面と、スリット２３ｃの中心軸とは、直線Ｃ１上に位置している。換言すると、処置具起上台２３には、先端から基端側に向かって、幅方向の中心が超音波振動子２１により超音波観察する観察面内に一致するスリット２３ｃが形成されている。その結果、ガイドワイヤ１０２は、超音波観察する面内に突出する。さらに、図６に示すように、ガイドワイヤ１０２の突出方向は、超音波振動子２１により超音波観察する領域Ｄ２を通過する。なお、処置具起上台２３は、第２の面２３ｂによりガイドワイヤ１０２を保持可能であれば、スリット２３ｃが形成されていなくてもよい。 Further, as shown in FIGS. 2 and 3, in the ultrasonic endoscope 1, 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. positioned. In other words, 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. As a result, the guide wire 102 protrudes into the plane for ultrasonic observation. Further, as shown in FIG. 6, 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.
　なお、開口部２２ａは、処置具挿通路２８の径よりも大きな方形の開口であり、処置具起上台２３が最大起上した状態において、処置具起上台２３の両サイドに設けられているガイド部２３ｅを収容する。 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.
　超音波内視鏡１によれば、穿刺針１０１と同様にガイドワイヤ１０２を光学的観察及び超音波観察可能な突出方向に突出させることができる。なお、穿刺針１０１の突出方向とガイドワイヤ１０２の突出方向とは、光学的観察及び超音波観察可能な方向であればよく、同一方向でなくてもよい。 According to the ultrasonic endoscope 1, 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.
　以上説明したように、超音波内視鏡１によれば、径が異なる穿刺針１０１及びガイドワイヤ１０２を光学的観察及び超音波観察可能な突出方向に突出させることができる。 As described above, according to the ultrasonic endoscope 1, 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.
　なお、上述した実施の形態では、超音波振動子２１を備える超音波内視鏡１について説明したが、超音波振動子を有しない内視鏡に適用してもよい。この場合、斜視型の内視鏡の視野内に径が異なる処置具を突出させることができる。同様に、撮像部を有しない内視鏡に適用してもよい。この場合、超音波振動子２１の視野内に径が異なる処置具を突出させることができる。 Although 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.
（変形例１）
　図７は、変形例１の超音波内視鏡における処置具起上台がガイドワイヤを保持する様子を表す図である。図７に示すように、変形例１に係る超音波内視鏡の先端部２Ａａにおいて、処置具起上台２３Ａには、第２の面２３ｂの処置具起上台２３Ａが起上する側に第２の面２３ｂに接続するＲ形状の曲面２３Ａｆが形成されている。曲面２３Ａｆが形成されていることにより、処置具起上台２３Ａが起上する動作が滑らかになる。また、処置具起上台には、処置具起上台が起上する側の反対側にＲ形状の曲面が形成されていてもよい。この場合、起上している処置具起上台を溝部２２ｂに収容する動作が滑らかになる。 (Modification example 1)
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. As shown in FIG. 7, 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. Further, 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.
（変形例２）
　図８は、変形例２の超音波内視鏡の先端部の断面図である。図８に示すように、変形例２に係る超音波内視鏡の先端部２Ｂａにおいて、処置具起上台２３Ｂには、第２の面２３ｂに替えて、互いに交差する面である第４の面２３Ｂｂａ及び第５の面２３Ｂｂｂが形成されている。第４の面２３Ｂｂａ及び第５の面２３Ｂｂｂは、スリット２３ｃの底面に形成されている。スリット２３ｃの幅は、後述する太径ガイドワイヤに略等しい太径部分と、後述する細径ガイドワイヤに略等しい細径部分とが形成されるように、段階的に幅が狭くなるように形成されている。 (Modification 2)
FIG. 8 is a cross-sectional view of the tip of the ultrasonic endoscope of the second modification. As shown in FIG. 8, in the tip portion 2Ba of the ultrasonic endoscope according to 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.
　図９は、変形例２の超音波内視鏡における処置具起上台が太径ガイドワイヤを保持する様子を表す図である。図９に示すように、第４の面２３Ｂｂａは、太径ガイドワイヤ１０３を突出方向に突出する状態に保持する。太径ガイドワイヤ１０３は、例えば太さ０．０３５インチのガイドワイヤである。このとき、処置具起上台２３は、穿刺針１０１を保持する位置よりもさらに起上した状態であり、太径ガイドワイヤ１０３は、第４の面２３Ｂｂａと第３の面２２ａｂとに挟まれて保持されている。換言すると、太径ガイドワイヤ１０３を開口部２２ａから突出させた状態で処置具起上台２３を起上させると、太径ガイドワイヤ１０３がスリット２３ｃの太径部分に入り込むが、細径部分には入り込めないために太径ガイドワイヤ１０３によって処置具起上台２３の回転が規制され、太径ガイドワイヤ１０３が第４の面２３Ｂｂａと第３の面２２ａｂとに挟まれて保持された状態となる。太径ガイドワイヤ１０３の突出方向は、開口部２２ａの斜め前方に位置する超音波内視鏡が光学的に観察する領域Ｄ１を通過する。 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. As shown in FIG. 9, 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. At this time, 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. In other words, when the treatment tool raising table 23 is raised with the large-diameter guide wire 103 protruding from the opening 22a, 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.
　また、図９に示すように、太径ガイドワイヤ１０３の突出方向は、超音波振動子２１により超音波観察する領域Ｄ２を通過する。 Further, as shown in FIG. 9, the protruding direction of the large-diameter guide wire 103 passes through the region D2 for ultrasonic observation by the ultrasonic vibrator 21.
　変形例２に係る超音波内視鏡によれば、太径ガイドワイヤ１０３を光学的観察及び超音波観察可能な突出方向に突出させることができる。 According to the ultrasonic endoscope according to the second modification, the large-diameter guide wire 103 can be projected in a protruding direction capable of optical observation and ultrasonic observation.
　図１０は、変形例２の超音波内視鏡における処置具起上台が細径ガイドワイヤを保持する様子を表す図である。図１０に示すように、第５の面２３Ｂｂｂは、細径ガイドワイヤ１０４を突出方向に突出する状態に保持する。細径ガイドワイヤ１０４は、例えば太さ０．０２５インチのガイドワイヤである。このとき、処置具起上台２３は、太径ガイドワイヤ１０３を保持する位置よりもさらに起上した状態であり、細径ガイドワイヤ１０４は、第５の面２３Ｂｂｂと第３の面２２ａｂとに挟まれて保持されている。換言すると、細径ガイドワイヤ１０４を開口部２２ａから突出させた状態で処置具起上台２３を起上させると、細径ガイドワイヤ１０４がスリット２３ｃの細径部分に入り込むため、処置具起上台２３の回転が規制されず処置具起上台２３が最大起上した状態となる。このとき、細径ガイドワイヤ１０４が第５の面２３Ｂｂｂと第３の面２２ａｂとに挟まれて保持された状態となる。細径ガイドワイヤ１０４の突出方向は、開口部２２ａの斜め前方に位置する超音波内視鏡が光学的に観察する領域Ｄ１を通過する。 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. As shown in FIG. 10, 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. At this time, 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. In other words, when the treatment tool raising table 23 is raised with the small diameter guide wire 104 protruding from the opening 22a, 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. At this time, 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.
　また、図１０に示すように、細径ガイドワイヤ１０４の突出方向は、超音波振動子２１により超音波観察する領域Ｄ２を通過する。 Further, as shown in FIG. 10, the protruding direction of the small-diameter guide wire 104 passes through the region D2 for ultrasonic observation by the ultrasonic vibrator 21.
　変形例２に係る超音波内視鏡によれば、細径ガイドワイヤ１０４を光学的観察及び超音波観察可能な突出方向に突出させることができる。 According to the ultrasonic endoscope according to the second modification, the small-diameter guide wire 104 can be projected in a protruding direction capable of optical observation and ultrasonic observation.
　以上説明したように、変形例２に係る超音波内視鏡によれば、径が異なる穿刺針１０１、太径ガイドワイヤ１０３及び細径ガイドワイヤ１０４を光学的観察及び超音波観察可能な突出方向に突出させることができる。 As described above, according to the ultrasonic endoscope according to the second modification, 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.
〔先端部の内部構成〕
　図１１は、先端部の部分断面図である。具体的には、図１１は、図２に示す蓋１１０の内部の断面図である。蓋１１０は、蓋１１０の一端から突設された突起部１１０ａと、突起部１１０ａの先端に設けられている爪部１１０ｂと、他端に位置し、係止部２２ｄに係止される凸部１１０ｃを有する。蓋１１０は、例えば樹脂からなる。 [Internal configuration of the tip]
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.
　硬質部２２の凹部２２ｃには、係止部材１１１が接着等により固定されている。係止部材１１１には、爪部１１０ｂを係止する係止穴１１１ａが形成されている。係止部材１１１は、例えば金属又は合金からなる。 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.
　カバー１１２は、ネジ１１３が挿入される貫通孔１１２ａと、係止部２２ｄに係止される凸部１１２ｂと、を有する。 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.
　図１２は、蓋を硬質部に組み付ける様子を表す図である。図１２に示すように、蓋１１０は、凸部１１０ｃが係止部２２ｄに係止された状態で、爪部１１０ｂが係止穴１１１ａに係止されることにより硬質部２２に組み付けられる。このとき、蓋１１０は、硬質部２２に接着により固定されるとともに、爪部１１０ｂが係止穴１１１ａに係止されることにより機械的に固定される。その結果、接着剤の塗布にムラがある場合や、接着剤が劣化した場合であっても蓋１１０が硬質部２２に固定される。 FIG. 12 is a diagram showing how the lid is assembled to the hard portion. As shown in FIG. 12, 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. At this time, 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. As a result, the lid 110 is fixed to the hard portion 22 even when the adhesive is applied unevenly or the adhesive is deteriorated.
　図１３は、図１２のカバーを拡大した図である。図１４は、カバーを硬質部２２に組み付ける様子を表す図である。図１４に示すように、カバー１１２は、凸部１１２ｂが係止部２２ｄに係止された状態で、貫通孔１１２ａに挿通されたネジ１１３をネジ穴２２ｅに螺合することにより硬質部２２に固定される。このとき、凸部１１２ｂが係止部２２ｄに係止されていることにより、螺合によりカバー１１２が回転することが防止されている。 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. As shown in FIG. 14, 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.
〔処置具起上台洗浄具の構成〕
　図１５は、処置具起上台洗浄具の全体図である。図１５に示すように、処置具起上台洗浄具１２０は、口金１２１と、チューブ１２２と、カバー部材１２３と、連結部材１２４と、を有する。 [Construction of treatment tool riser cleaning tool]
FIG. 15 is an overall view of the treatment tool raising table cleaning tool. As shown in FIG. 15, the treatment tool raising table cleaning tool 120 has a base 121, a tube 122, a cover member 123, and a connecting member 124.
　口金１２１は、外部の送水ポンプに接続される。 The base 121 is connected to an external water pump.
　チューブ１２２は、口金１２１から注入された水を先端に送水する。 The tube 122 sends the water injected from the mouthpiece 121 to the tip.
　図１６は、図１５に示すカバー部材の分解図である。図１６に示すように、カバー部材１２３は、上カバー１２３１と、下カバー１２３２と、を有する。上カバー１２３１は、チューブ１２２を接続される接続部１２３１ａと、ヒンジ部１２３２ａと嵌合するヒンジ部１２３１ｂと、連結部材１２４を挿入される連結部材挿入部１２３１ｃと、連結部材挿入部１２３１ｃの一部に形成されている切欠部１２３１ｄと、を有する。下カバー１２３２は、ヒンジ部１２３１ｂと嵌合するヒンジ部１２３２ａと、連結部材１２４を挿入される連結部材挿入部１２３２ｂと、連結部材挿入部１２３２ｂの一部に形成されている切欠部１２３２ｃと、を有する。 FIG. 16 is an exploded view of the cover member shown in FIG. As shown in FIG. 16, 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.
　上カバー１２３１と下カバー１２３２とは、ヒンジ部１２３１ｂとヒンジ部１２３２ａとが嵌合することにより互いに結合される。また、上カバー１２３１と下カバー１２３２とは、連結部材１２４により接続されており、ヒンジ部１２３１ｂとヒンジ部１２３２ａとを取り外した際にバラバラになることが防止されている。 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.
　図１７は、図１５に示す連結部材を表す図である。図１７に示すように、連結部材１２４は、上カバー１２３１の連結部材挿入部１２３１ｃ及び下カバー１２３２の連結部材挿入部１２３２ｂから連結部材１２４が脱落することを防止する抜け止め部１２４ａと、抜け止め部１２４ａに連設されている太径部１２４ｂと、連結部材１２４の中央部に設けられている細径部１２４ｃと、を有する。 FIG. 17 is a diagram showing the connecting member shown in FIG. As shown in FIG. 17, 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.
　上カバー１２３１の切欠部１２３１ｄ及び下カバー１２３２の切欠部１２３２ｃに細径部１２４ｃを挿入することにより、上カバー１２３１及び下カバー１２３２に連結部材１２４を取り付けることができる。また、処置具起上台洗浄具１２０を洗浄する際には、上カバー１２３１の切欠部１２３１ｄ及び下カバー１２３２の切欠部１２３２ｃに細径部１２４ｃを挿入して、上カバー１２３１及び下カバー１２３２から連結部材１２４を取り外すことにより、上カバー１２３１、下カバー１２３２、及び連結部材１２４をそれぞれ分離して洗浄することができる。 By inserting the small diameter portion 124c into the notch 1231d of the upper cover 1231 and the notch 1232c of the lower cover 1232, 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.
　図１８は、図１５に示すカバー部材を超音波内視鏡の先端部に取り付けた断面図である。図１８に示すように、上カバー１２３１には、噴射口１２３１ｅと、噴射口１２３１ｆと、が形成されている。そして、接続部１２３１ａから注入された水は、噴射口１２３１ｅ及び噴射口１２３１ｆから、それぞれ処置具起上台２３の先端側のすき間２２ｂａ及び処置具起上台２３の基端側のすき間２２ｂｂに向かって噴出される。 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. As shown in FIG. 18, 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.
　以上説明した処置具起上台洗浄具１２０によれば、口金１２１から注入する水の水圧によりすき間２２ｂａ及びすき間２２ｂｂを洗浄するため、洗浄を行う作業者の熟練度や技術によらず一様に適切な洗浄を行うことができる。 According to the treatment tool raising table cleaning tool 120 described above, since 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.
〔処置具起上台の固定構造〕
　図１９は、処置具起上台を回転軸に固定する様子を表す図である。図１９に示すように、処置具起上台２３は、ネジ穴２３ｇにネジ１３１を螺合することにより回転軸２７の一端に固定される。さらに、ネジ穴２３ｇは、ネジ隠し部材１３２を接着されて封止される。回転軸２７の他端は、操作ワイヤに対する操作に応じて回転するハウジング１３３に固定されている。 [Fixed structure of treatment tool riser]
FIG. 19 is a diagram showing a state in which the treatment tool raising table is fixed to the rotating shaft. As shown in FIG. 19, 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.
　円柱状の回転軸２７の一部には、断面がＤ形状となるように平面が設けられており、この平面に円錐状の溝である円錐溝２７ａが形成されている。ネジ１３１の先端には、円錐状の突部である円錐部１３１ａが形成されている。円錐溝２７ａの中心軸Ｅ１は、円錐部１３１ａの中心軸に対して、わずかにハウジング１３３側に位置する。その結果、ネジ穴２３ｇにネジ１３１を螺合すると、処置具起上台２３をハウジング１３３側に移動させる方向の力が加わり、処置具起上台２３と回転軸２７とが密着する。その結果、処置具起上台２３と回転軸２７との間が確実に水密に封止される。 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. As a result, when the screw 131 is screwed into the screw hole 23g, a force in the direction of moving the treatment tool raising table 23 toward the housing 133 side is applied, and the treatment tool raising table 23 and the rotating shaft 27 are brought into close contact with each other. As a result, the space between the treatment tool raising table 23 and the rotating shaft 27 is surely watertightly sealed.
　さらなる効果や変形例は、当業者によって容易に導き出すことができる。よって、本発明のより広範な態様は、以上のように表し、かつ記述した特定の詳細及び代表的な実施の形態に限定されるものではない。従って、添付のクレーム及びその均等物によって定義される総括的な発明の概念の精神又は範囲から逸脱することなく、様々な変更が可能である。 Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the invention are not limited to the particular details and typical embodiments described and described as described above. Thus, various modifications can be made without departing from the spirit or scope of the overall concept of the invention as defined by the accompanying claims and their equivalents.
　１　超音波内視鏡
　２　挿入部
　２ａ、２Ａａ、２Ｂａ　先端部
　２ｂ　湾曲部
　２ｃ　可撓管部
　３　操作部
　３ａ　処置具挿入口
　４　ユニバーサルコード
　５　コネクタ部
　２１　超音波振動子
　２２　硬質部
　２２ａ　開口部
　２２ａａ　ガイド溝
　２２ａｂ　第３の面
　２２ｂ　溝部
　２２ｂａ、２２ｂｂ　すき間
　２２ｃ　凹部
　２２ｄ　係止部
　２２ｅ、２３ｇ　ネジ穴
　２３、２３Ａ、２３Ｂ　処置具起上台
　２３ａ　第１の面
　２３ｂ　第２の面
　２３Ｂｂａ　第４の面
　２３Ｂｂｂ　第５の面
　２３ｃ　スリット
　２３ｄ　軸穴
　２３ｅ　ガイド部
　２３Ａｆ　曲面
　２４　照明レンズ
　２５　対物レンズ
　２６　ノズル
　２７　回転軸
　２７ａ　円錐溝
　２８　処置具挿通路
　１０１　穿刺針
　１０２　ガイドワイヤ
　１０３　太径ガイドワイヤ
　１０４　細径ガイドワイヤ
　１１０　蓋
　１１０ａ　突起部
　１１０ｂ　爪部
　１１０ｃ、１１２ｂ　凸部
　１１１　係止部材
　１１１ａ　係止穴
　１１２　カバー
　１１２ａ　貫通孔
　１１３、１３１　ネジ
　１２０　処置具起上台洗浄具
　１２１　口金
　１２２　チューブ
　１２３　カバー部材
　１２４　連結部材
　１２４ａ　抜け止め部
　１２４ｂ　太径部
　１２４ｃ　細径部
　１３１ａ　円錐部
　１３２　ネジ隠し部材
　１３３　ハウジング
　１２３１　上カバー
　１２３１ａ　接続部
　１２３１ｂ、１２３２ａ　ヒンジ部
　１２３１ｃ、１２３２ｂ　連結部材挿入部
　１２３１ｄ、１２３２ｃ　切欠部
　１２３１ｅ、１２３１ｆ　噴射口
　１２３２　下カバー 1 Ultrasonic endoscope 2 Insertion part 2a, 2Aa, 2Ba Tip part 2b Curved part 2c Flexible tube part 3 Operation part 3a Treatment tool insertion port 4 Universal cord 5 Connector part 21 Ultrasonic transducer 22 Hard part 22a Opening part 22aa Guide groove 22ab 3rd surface 22b Groove 22ba, 22bb Gap 22c Recess 22d Locking part 22e, 23g Screw hole 23, 23A, 23B Treatment tool riser 23a 1st surface 23b 2nd surface 23Bba 4th surface 23Bbb Face 5 23c Slit 23d Shaft hole 23e Guide part 23Af Curved surface 24 Illumination lens 25 Objective lens 26 Nozzle 27 Rotating shaft 27a Conical groove 28 Treatment tool Insertion passage 101 Penetration needle 102 Guide wire 103 Large diameter guide wire 104 Small diameter guide wire 110 lid 110a Protrusion 110b Claw 110c, 112b Convex 111 Locking member 111a Locking hole 112 Cover 112a Through hole 113, 131 Screw 120 Treatment tool Raising table Cleaning tool 121 Base 122 Tube 123 Cover member 124 Connecting member 124a Retaining part 124b Large diameter part 124c Small diameter part 131a Conical part 132 Screw hiding member 133 Housing 1231 Top cover 1231a Connection part 1231b, 1232a Hinge part 1231c, 1232b Connecting member insertion part 1231d, 1232c Notch part 1231e, 1231f Injection port 1232 Lower cover

Claims (10)

  1. 　挿入部の内部に設けられている処置具挿通路の基端側から挿入された処置具を先端側に突出させる開口部、及び前記開口部の先端側に設けられている溝部を有する硬質部と、
    　前記溝部に収容されており、操作部が受け付けた操作に応じて起上し、前記処置具が前記開口部から突出する方向を変える処置具起上台であって、第１の処置具を所定の突出方向に突出する状態に保持する第１の面、及び前記第１の面に交差する面であり、前記第１の処置具より外径が小さい第２の処置具を前記突出方向に突出する状態に保持する第２の面が形成されている処置具起上台と、
    　を備える内視鏡。     An opening for projecting the treatment tool inserted from the base end side of the treatment tool insertion passage provided inside the insertion portion toward the tip side, and a hard portion having a groove provided on the tip end side of the opening. ,
    A treatment tool raising table housed in the groove portion, which rises in response to an operation received by the operation unit and changes the direction in which the treatment tool protrudes from the opening, and a predetermined treatment tool is used. A first surface that is held in a state of projecting in the projecting direction and a surface that intersects the first surface and has an outer diameter smaller than that of the first treatment tool are projected in the projecting direction. A treatment tool raising platform on which a second surface to be held in a state is formed, and
    Endoscope equipped with.
  2. 　前記突出方向は、当該内視鏡が光学的に観察する領域を通過する請求項１に記載の内視鏡。 The endoscope according to claim 1, wherein the protruding direction passes through a region optically observed by the endoscope.
  3. 　超音波を送受信する超音波振動子を備え、
    　前記突出方向は、前記超音波振動子により超音波観察する領域を通過する請求項１又は２に記載の内視鏡。     Equipped with an ultrasonic transducer that transmits and receives ultrasonic waves
    The endoscope according to claim 1 or 2, wherein the protruding direction passes through a region for ultrasonic observation by the ultrasonic vibrator.
  4. 　前記処置具起上台には、先端から基端側に向かってスリットが形成されており、
    　前記第２の面は、前記スリットの底面に形成されている請求項１～３のいずれか１つに記載の内視鏡。     A slit is formed in the treatment tool raising table from the tip to the base end side.
    The endoscope according to any one of claims 1 to 3, wherein the second surface is formed on the bottom surface of the slit.
  5. 　前記処置具起上台には、先端から基端側に向かって、幅方向の中心が前記超音波振動子により超音波観察する観察面内に一致するスリットが形成されており、
    　前記第２の面は、前記スリットの底面に形成されている請求項３に記載の内視鏡。     The treatment tool raising table is formed with a slit whose center in the width direction coincides with the observation surface for ultrasonic observation by the ultrasonic vibrator from the tip to the base end side.
    The endoscope according to claim 3, wherein the second surface is formed on the bottom surface of the slit.
  6. 　前記開口部には、前記突出方向に沿った第３の面が形成されている請求項１～５のいずれか１つに記載の内視鏡。 The endoscope according to any one of claims 1 to 5, wherein a third surface along the protruding direction is formed in the opening.
  7. 　前記開口部には、前記処置具挿通路より径が小さい半円状のガイド溝が形成されており、
    　前記第３の面は、前記ガイド溝の底面に形成されている請求項６に記載の内視鏡。     A semicircular guide groove having a diameter smaller than that of the treatment tool insertion passage is formed in the opening.
    The endoscope according to claim 6, wherein the third surface is formed on the bottom surface of the guide groove.
  8. 　前記処置具起上台には、前記第２の面の前記処置具起上台が起上する側、又は前記処置具起上台が起上する側の反対側に前記第２の面に接続する曲面が形成されている請求項１～７のいずれか１つに記載の内視鏡。 The treatment tool raising table has a curved surface connected to the second surface on the side of the second surface on which the treatment tool raising table rises or on the side opposite to the side on which the treatment tool raising table rises. The endoscope according to any one of claims 1 to 7, which is formed.
  9. 　前記処置具起上台は、当該処置具起上台が起上する方向に向かって前記第１の面の両側部に突設されているガイド部を有する請求項８に記載の内視鏡。 The endoscope according to claim 8, wherein the treatment tool raising table has guide portions protruding from both sides of the first surface in the direction in which the treatment tool raising table rises.
  10. 　前記開口部は、前記処置具起上台が起上した状態において、前記ガイド部を収容する請求項９に記載の内視鏡。 The endoscope according to claim 9, wherein the opening is a state in which the treatment tool raising table is raised and the guide portion is housed.
PCT/JP2020/006357 2020-02-18 2020-02-18 Endoscope WO2021166085A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002034905A (en) * 2000-04-17 2002-02-05 Olympus Optical Co Ltd Endoscope, and its endoscope system
JP2004267596A (en) * 2003-03-11 2004-09-30 Pentax Corp Forceps uplifting device of endoscope
JP2007330756A (en) * 2006-05-17 2007-12-27 Olympus Medical Systems Corp Endoscope
JP2008017859A (en) * 2006-07-10 2008-01-31 Olympus Medical Systems Corp Ultrasonic endoscope and accessory raising base used for ultrasonic endoscope
WO2018070508A1 (en) * 2016-10-14 2018-04-19 Hoya株式会社 Endoscopic cap, endoscope, method of removing endoscopic cap
WO2018079790A1 (en) * 2016-10-28 2018-05-03 オリンパス株式会社 Endoscope

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002034905A (en) * 2000-04-17 2002-02-05 Olympus Optical Co Ltd Endoscope, and its endoscope system
JP2004267596A (en) * 2003-03-11 2004-09-30 Pentax Corp Forceps uplifting device of endoscope
JP2007330756A (en) * 2006-05-17 2007-12-27 Olympus Medical Systems Corp Endoscope
JP2008017859A (en) * 2006-07-10 2008-01-31 Olympus Medical Systems Corp Ultrasonic endoscope and accessory raising base used for ultrasonic endoscope
WO2018070508A1 (en) * 2016-10-14 2018-04-19 Hoya株式会社 Endoscopic cap, endoscope, method of removing endoscopic cap
WO2018079790A1 (en) * 2016-10-28 2018-05-03 オリンパス株式会社 Endoscope

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