[go: up one dir, main page]

WO2018070526A1 - Endoscope et capuchon endoscopique - Google Patents

Endoscope et capuchon endoscopique Download PDF

Info

Publication number
WO2018070526A1
WO2018070526A1 PCT/JP2017/037200 JP2017037200W WO2018070526A1 WO 2018070526 A1 WO2018070526 A1 WO 2018070526A1 JP 2017037200 W JP2017037200 W JP 2017037200W WO 2018070526 A1 WO2018070526 A1 WO 2018070526A1
Authority
WO
WIPO (PCT)
Prior art keywords
endoscope
distal end
cover
lever
cap
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/037200
Other languages
English (en)
Japanese (ja)
Inventor
泰嗣 細越
恵一 齋藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoya Corp
Original Assignee
Hoya Corp
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
Priority claimed from JP2017166127A external-priority patent/JP2018126488A/ja
Application filed by Hoya Corp filed Critical Hoya Corp
Priority to CN201780056856.2A priority Critical patent/CN109715038A/zh
Priority to US16/334,340 priority patent/US20190223696A1/en
Priority to DE112017005218.1T priority patent/DE112017005218T5/de
Publication of WO2018070526A1 publication Critical patent/WO2018070526A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes

Definitions

  • the present invention relates to an endoscope and an endoscope cap.
  • An endoscope having an elevator at the tip of a channel passing through the inside of the insertion part is used.
  • the elevator is used when bending a treatment instrument or the like passed through the channel and guiding it in a desired direction.
  • An endoscope is disclosed in which a wall is provided between a raising wire that moves an elevator and the elevator (Patent Document 1).
  • An object of one aspect of the present invention is to provide an endoscope or the like that includes an endoscope cap with an elevator that can be easily attached to the distal end of the endoscope.
  • the endoscope has a rotatable raising base connecting portion exposed on a front end surface of the insertion portion, a first index provided in the insertion portion, and an opening end portion, and the insertion portion extends from the opening end portion.
  • a bottomed cylindrical cover that can be attached to and detached from the tip of the head, a second index corresponding to the first index provided on the cover, and a lever coupling portion coupled to the elevator coupling portion
  • an endoscope cap including a raising base provided inside the cover so as to be rotatable.
  • an endoscope or the like provided with an endoscope cap with an elevator that can be easily attached to the distal end of the endoscope.
  • FIG. 1 It is a perspective view of the front-end
  • FIG. 6 is a cross-sectional view of the endoscope cap taken along line XVIII-XVIII in FIG. 5. It is a perspective view of a lever.
  • FIG. 5 is a cross-sectional view of the insertion portion taken along line XX-XX in FIG. 4.
  • FIG. 5 is a cross-sectional view of the insertion portion taken along line XXI-XXI in FIG. 4. It is sectional drawing of the insertion part which pressed and changed the cover. It is sectional drawing of the insertion part which raised the raising stand. It is the enlarged view which looked at the 1st engaging part of Embodiment 2 from the opening edge part side.
  • 6 is a rear view of a cover according to Embodiment 2.
  • FIG. 2 is a rear view of a cover according to Embodiment 2.
  • FIG. 10 is a rear view of a cover according to Embodiment 3.
  • FIG. FIG. 10 is an enlarged view as viewed from the first engagement portion opening end portion side of the fourth embodiment.
  • FIG. 10 is a cross-sectional view of an insertion part according to a fifth embodiment. It is sectional drawing of the insertion part which pressed and deform
  • FIG. 10 is a cross-sectional view of an insertion part according to a sixth embodiment.
  • FIG. 20 is a perspective view of the endoscope cap according to the seventh embodiment as viewed from the side of attachment to the endoscope.
  • FIG. 10 is a cross-sectional view of an insertion part according to a seventh embodiment.
  • FIG. 33 is a cross-sectional view of the insertion portion taken along line XXXIII-XXXIII in FIG. 32. It is sectional drawing of the insertion part which raised the raising stand of Embodiment 7.
  • FIG. FIG. 10 is a cross-sectional view of an insertion portion according to an eighth embodiment.
  • FIG. 36 is a cross-sectional view of the insertion portion taken along line XXXVI-XXXVI in FIG. 35.
  • FIG. 10 is a cross-sectional view of an insertion part according to a ninth embodiment.
  • FIG. 38 is a front view of the distal end of the insertion portion according to the tenth embodiment.
  • FIG. 29 is an explanatory diagram for explaining an operation of attaching the endoscope cap according to the tenth embodiment.
  • FIG. 38 is a front view of the distal end of the insertion portion according to the eleventh embodiment.
  • FIG. 38 is an explanatory diagram for explaining an operation of attaching the endoscope cap according to the
  • FIG. 1 is an external view of an endoscope.
  • the endoscope 10 of the present embodiment is a flexible endoscope for the upper digestive tract.
  • the endoscope 10 includes an operation unit 20 and an insertion unit 30.
  • the operation unit 20 includes a raising operation lever 21, a channel inlet 22, and a bending knob 23.
  • the operation unit 20 is connected to a video processor, a light source device, a display device, and the like (not shown).
  • the insertion part 30 is long and one end is connected to the operation part 20.
  • the insertion part 30 has the soft part 12, the bending part 13, and the cap 50 for endoscopes in an order from the operation part 20 side.
  • the soft part 12 is soft.
  • the bending portion 13 bends according to the operation of the bending knob 23.
  • the endoscope cap 50 covers a hard distal end portion 31 (see FIG. 2) that is continuous with the bending portion 13.
  • the endoscope cap 50 can be detached from the distal end portion 31.
  • the endoscope cap 50 includes a cover 52 that is an exterior member and a raising base 80 (see FIG. 2). Details of the configuration of the endoscope cap 50 will be described later.
  • the longitudinal direction of the insertion portion 30 is described as the insertion direction.
  • the side near the operation unit 20 along the insertion direction is described as the operation unit side, and the side far from the operation unit 20 is described as the tip side.
  • FIG. 2 is a perspective view of the distal end of the insertion portion 30.
  • FIG. 3 is an explanatory view showing a state where the treatment instrument distal end portion 41 protrudes from the distal end of the insertion portion 30.
  • the configuration of the endoscope 10 according to the present embodiment will be described with reference to FIGS. 1 to 3.
  • the distal end portion 31 disposed at the distal end of the bending portion 13 has an observation window 36 and an illumination window 37 arranged along the insertion direction on one side.
  • the illumination window 37 is disposed on the tip side of the observation window 36.
  • the distal end portion 31 has a channel outlet 35 on the other operation portion side.
  • a raised portion 83 is disposed on the distal end side of the channel outlet 35.
  • the cover 52 that covers the distal end portion 31 has a substantially rectangular window portion 53 at portions corresponding to the observation window 36, the illumination window 37, and the raised portion 83.
  • the side of the window portion 53 on the operation portion side has a stepped shape in which the raised portion 83 side is located on the operation portion side and the observation window 36 side is located on the distal end side, and has a stopper portion 531 in the center portion.
  • the illumination window 37 irradiates illumination light emitted from a light source device (not shown). It is possible to optically observe the area illuminated by the illumination light through the observation window 36.
  • the endoscope 10 according to the present embodiment is a so-called side view type in which a visual field direction in which optical observation is possible intersects with an insertion direction.
  • the endoscope 10 may be a front perspective type in which the visual field direction is slightly inclined toward the distal end side, or a rear perspective type in which the visual field direction is slightly inclined toward the operation unit side.
  • the channel inlet 22 and the channel outlet 35 are connected by a channel 34 that passes through the inside of the flexible portion 12 and the curved portion 13.
  • the treatment instrument distal end portion 41 protrudes while gently bending on the raised portion 83.
  • the lever 60 moves as will be described later, and the raising table 80 moves in conjunction with the lever 60.
  • the treatment instrument distal end portion 41 on the elevator base 80 is bent toward the operation section 20 as shown by arrows and two-dot chain lines in FIGS.
  • the movement of the distal end portion 41 of the treatment instrument is photographed by an imaging element (not shown) through the observation window 36 and displayed on a display device (not shown).
  • the treatment tool 40 is a treatment device such as a high-frequency knife, forceps, or contrast tube.
  • the device inserted into the channel 34 is not limited to a treatment device.
  • an observation device such as an ultrasonic probe or an ultra-fine endoscope may be inserted into the channel 34 for use. In the following description, it will be referred to as a treatment instrument 40 including an observation device.
  • the movement of the elevator 80 as described above may be expressed as “the elevator 80 starts up” in the following description.
  • the bending of the treatment instrument distal end portion 41 by being pushed by the raised elevator 80 may be expressed as “the treatment instrument 40 is raised” in the following description.
  • the raising degree of the treatment instrument 40 can be adjusted by operating the raising operation lever 21.
  • FIG. 4 is a front view of the distal end of the insertion portion 30.
  • the cover 52 has a rectangular recess 48 in the vicinity of the opening end 56. Each side of the recess 48 falls substantially vertically from the surface of the cover 52.
  • the concave portion 48 is thinner than other portions in the circumferential direction of the cover 52 and is a portion that is easily bent when an external force is applied by pressing it with a finger or the like.
  • the recessed part 48 is an example of the flexible part of this Embodiment.
  • FIG. 5 is a front view for explaining a state in which the endoscope cap 50 is removed from the distal end of the insertion portion 30.
  • FIG. 6 is a rear view illustrating a state where the endoscope cap 50 is removed from the distal end of the insertion portion 30.
  • the user of the endoscope 10 holds the curved portion 13 with one hand and grips the cover 52 with two fingers of the other hand. At this time, when the concave portion 48 is pressed by one of the two fingers, the other finger naturally presses the region indicated by P in FIG.
  • the user can remove the endoscope cap 50 from the distal end of the insertion portion 30 as will be described later by pressing the cover 52 with two fingers to lightly deform it and then pulling it toward the distal end side.
  • FIG. 7 is a perspective view of the distal end of the insertion portion 30 with the endoscope cap 50 removed.
  • the configuration of the distal end of the insertion portion 30 will be described with reference to FIGS.
  • the distal end portion 31 has a substantially cylindrical shape, and is divided into an optical accommodating portion 33 and a lever chamber 69 by a groove provided from the distal end side toward the operation portion side at a position shifted from the center.
  • the channel outlet 35 opens at the bottom of the groove.
  • a bent portion 27 is provided in the vicinity of the channel outlet 35. The shape of the bent portion 27 will be described later.
  • the front end portion 31 has a first flat surface portion 321 formed by cutting a part of the peripheral surface flat.
  • a third engaging portion 29 is provided in a portion of the first flat portion 321 along the bottom of the groove separating the optical housing portion 33 and the lever chamber 69.
  • the third engagement portion 29 is an oval depression.
  • the distal end portion 31 has a fourth engagement portion 28 (see FIG. 20) on the back side of the third engagement portion 29.
  • the 4th engaging part 28 is a rectangular hollow.
  • the observation window 36 and the illumination window 37 are arranged on the optical housing part 33 side of the first flat part 321.
  • a nozzle 38 that cleans the observation window 36 by spraying water and air is provided on the operation portion side of the observation window 36.
  • a second flat surface portion 322 and a third flat surface portion 323 formed by cutting out a part of the peripheral surface of the distal end portion 31 flatly are provided outside the optical housing portion 33.
  • the second plane portion 322 and the third plane portion 323 are continuous with an angle.
  • the lever chamber 69 is hollow and is covered with a rectangular thin plate-shaped lever chamber lid 67 along the outer peripheral surface of the tip 31.
  • the lever chamber lid 67 is fixed at the four corners by lid screws 66.
  • the cap screw 66 is an example of a fixing member of the present embodiment.
  • the lever chamber 69 has a support wall 68 on the optical housing portion 33 side.
  • the raising base connecting portion 61 protrudes from the support wall 68 toward the optical housing portion 33.
  • the elevator connection part 61 is an axis having a rectangular cross section. The elevator connection part 61 will be described later.
  • FIG. 8 is a perspective view of the distal end of the insertion portion 30 with the endoscope cap 50 and the lever chamber lid 67 removed.
  • a lever 60 is provided inside the lever chamber 69.
  • the lever 60 has a wire fixing portion 65 at one end, and a lever shaft 63 (see FIG. 19) and an elevator base connecting portion 61 at the other end as will be described later.
  • the lever 60 is rotatably supported by a hole provided in the support wall 68. Note that the rotation means a rotational movement within a predetermined angle range.
  • the wire fixing portion 65 is connected to the end portion of the raising wire 24.
  • the raising wire 24 is connected to the raising operation lever 21 (see FIG. 1) through the insertion portion 30. More specifically, the raising wire 24 is inserted through a guide tube (not shown) having an inner diameter slightly larger than the outer diameter of the raising wire 24. A guide tube (not shown) penetrates the insertion portion 30 in the longitudinal direction. Therefore, the tip of the raising wire 24 advances and retracts in conjunction with the operation of the raising operation lever 21.
  • the raising wire 24 is an example of a rotating part of the present embodiment. The raising wire 24 is remotely operated by the raising operation lever 21.
  • FIG. 9 is a perspective view of the endoscope cap 50 as viewed from the attachment side to the endoscope 10.
  • FIG. 10 is a perspective view of the endoscope cap 50 as viewed from the bottom side of the cover 52.
  • the endoscope cap 50 includes the cover 52 and the raising base 80.
  • the cover 52 is a bottomed cylindrical type having an opening at one end. As described above, the opening at one end of the cover 52 is referred to as an opening end 56.
  • the cover 52 has the window portion 53 in the cylinder portion.
  • the window 53 is opened at substantially one full length at one place on the peripheral surface of the cover 52.
  • the cover 52 has a pedestal groove 45 extending from the opening end portion 56 toward the bottom on the inner surface facing the window portion 53.
  • a raising base 80 is attached to the inside of the cover 52 via a base 70 fixed to the base groove 45. The pedestal 70 will be described later.
  • the cover 52 has a plate-like protruding portion 49 that protrudes inward along the edge of the window portion 53 on the opening end portion 56 side.
  • a first engaging portion 46 is provided at a part of the tip of the protruding portion 49 so as to protrude inward.
  • FIG. 11 is an enlarged perspective view of the first engagement portion 46.
  • FIG. 11 is an enlarged view of portion A in FIG.
  • the shape of the first engaging portion 46 will be described with reference to FIGS. 9 to 11.
  • the first engaging portion 46 has a first wedge surface 461 on the bottom side and a second wedge surface 462 on the opening end portion 56 side.
  • the first wedge surface 461 is a plane that is continuous with the bottom surface of the protrusion 49 and extends along the edge of the window 53.
  • the second wedge surface 462 is a flat surface that is inclined with respect to the axial length direction of the tube portion with the inner side at the bottom side and the outer side at the opening end side.
  • FIG. 12 is a perspective view of the elevator base 80.
  • FIG. 13 is a front view of the elevator base 80.
  • FIG. 14 is a side view of the elevator base 80. The configuration of the elevator 80 will be described with reference to FIGS.
  • the raising stand 80 has a substantially L-shaped raising portion 83.
  • the raised portion 83 has a first raised portion 831 having a spoon-like recessed portion 84 on one surface, and a second protruding from the end of the first raised portion 831 to the same side as the surface having the recessed portion 84 of the first raised portion 831. And a raised portion 832.
  • a lever connecting portion 81 is provided at the end of the second raised portion 832.
  • the lever connecting portion 81 is a U-shaped groove that opens toward the end of the second raised portion 832.
  • lever connecting portion 81 is covered with a plate-like flange 85.
  • the elevator shaft 82 protrudes from the opposite surface of the flange 85. That is, the elevator base 82 protrudes from one surface of the flange 85, and the protrusion 83 protrudes from the other surface of the flange 85 in a direction intersecting the central axis of the elevator shaft 82.
  • a lever connecting portion 81 is provided on the base end side of the raised portion 83.
  • the lever connecting portion 81 is disposed so as to sandwich the central axis of the elevator base shaft 82.
  • the flange 85 has a cylindrical surface 851 substantially coaxial with the elevator shaft 82.
  • the second raised portion 832 has a flat second flank 87 in a portion adjacent to the surface having the recessed portion 84 of the first raised portion 831.
  • the second flank 87 is a plane parallel to a plane corresponding to two U-shaped vertical lines of the lever coupling portion 81.
  • the second raised portion 832 has a first flank 86 between the second flank 87 and the inlet of the lever connecting portion 81.
  • the first flank 86 is a flat surface disposed closer to the central axis of the elevator shaft 82 than the extended surface of the cylindrical surface 851 provided on the flange 85.
  • the end of the first flank 86 on the flange 85 side is continuous with the cylindrical surface 851.
  • the second raised portion 832 has a stop surface 88 on the opposite side of the second flank 87 with the lever connecting portion 81 interposed therebetween.
  • the stop surface 88 is a plane parallel to the second flank 87.
  • the stop surface 88 is disposed closer to the central axis of the elevator base shaft 82 than the extended surface of the cylindrical surface 851.
  • the stop surface 88 is continuous with the entrance of the lever connecting portion 81 via a substantially cylindrical rotation flank 881.
  • FIG. 15 is a perspective view of the pedestal 70. The structure of the base 70 is demonstrated using FIG.
  • the pedestal 70 includes a rectangular plate-like base portion 95 and a substantially rectangular plate-like first wall 77 extending along the longitudinal direction of the base portion 95 from a support leg rising from the longitudinal center portion of the base portion 95.
  • a substantially rectangular plate-shaped second wall 78 rises in parallel with the first wall 77 from the base portion 95.
  • the first wall 77 and the second wall 78 are separated in the width direction of the base portion 95.
  • the second wall 78 has a second wall end face 781 parallel to the base portion 95.
  • the second wall end surface 781 is closer to the base portion 95 than the edge of the first wall 77.
  • the end of the first wall 77 is connected to a rectangular plate-shaped third wall 79 that spans the first wall 77 and the second wall 78.
  • the third wall 79 is provided with a first fixing protrusion 73 on the surface opposite to the first wall 77.
  • the first fixed protrusion 73 is a protrusion having a split groove.
  • the first fixing protrusion 73 has a thick stopper at one end.
  • the base portion 95 has a thick portion 74 at one end in the longitudinal direction and a second engaging portion 72 that rises in a substantially semicircular shape at the opposite end.
  • the thick part 74 faces the first wall 77.
  • the first wall 77 has an elevator mounting hole 76 at the base.
  • the elevator base shaft 82 of the elevator 80 described with reference to FIGS. 12 to 14 is inserted into the elevator mounting hole 76, and the elevator 80 and the base 70 are assembled so as to be rotatable.
  • FIG. 16 is a front view in which the raising base 80 and the base 70 are assembled.
  • FIG. 17 is a rear view in which the raising base 80 and the base 70 are assembled. A configuration in which the raising base 80 and the base 70 are assembled will be described with reference to FIGS. 16 and 17.
  • the elevator shaft 82 is inserted into the elevator mounting hole 76.
  • the elevator base mounting hole 76 functions as a bearing, whereby the elevator base 80 can be rotated around the elevator base shaft 82.
  • the first wall 77 and the second wall 78 sandwich the flange 85.
  • the flange 85 and the second wall 78 serve to prevent the riser 80 from being detached from the pedestal 70.
  • the stop surface 88 faces the second wall end surface 781.
  • the stop surface 88 comes into contact with the second wall 78 to prevent the elevator 80 from rotating. To do.
  • the elevator 80 since the opening end 56 side of the stop surface 88 is continuous with the entrance of the lever connecting portion 81 via the substantially cylindrical rotational flank 881, the elevator 80 has the elevator shaft 82 as an axis in FIG. It is possible to turn counterclockwise at.
  • the pedestal 70 is inserted into the cover 52 from the first fixed projection 73 side in a state where the raising base 80 is rotatably attached to the raising base attaching hole 76.
  • the base portion 95 of the pedestal 70 is fixed to the pedestal groove 45.
  • FIGS. 9 to 18 is a cross-sectional view of the endoscope cap 50 taken along the line XVIII-XVIII in FIG.
  • the XV-XV cross section is a cross section in which the first wall 77 is cut in the thickness direction along the longitudinal direction of the insertion portion 30.
  • the configuration of the endoscope cap 50 will be described with reference to FIGS. 9 to 18.
  • the cover 52 has a pedestal fixing hole 57 and a second fixing protrusion 58.
  • the base fixing hole 57 is a through hole provided at the bottom of the cover 52.
  • the second fixed protrusion 58 is a protrusion that protrudes from the end of the pedestal groove 45 toward the opening end 56.
  • the first fixing protrusion 73 and the thick part 74 described with reference to FIG. 15 engage with the base fixing hole 57 and the second fixing protrusion 58, respectively, so that the cover 52 and the base 70 are fixed inside the cover 52.
  • the hollow portion 84 is disposed to face the window portion 53.
  • the elevator base 80 can be rotated about the elevator shaft 82 to a position where the edge of the elevator 83 contacts the stopper portion 531.
  • the pivotable angle of the elevator base 80 is described as an angle Z.
  • FIG. 19 is a perspective view of the lever 60.
  • the lever 60 has a lever shaft 63 at one end and a wire fixing portion 65 at the other end.
  • the wire fixing portion 65 includes a split groove.
  • an elevator base connecting portion 61 that is an axis having a rectangular cross section protrudes in the same direction as the central axis of the lever shaft 63.
  • a plate-like portion that connects the lever shaft 63 and the wire fixing portion 65 is referred to as a rotation connecting portion 64.
  • the pivot connecting portion 64 protrudes from the end of the lever shaft 63 opposite to the elevator base connecting portion 61 in a direction intersecting with the central axis of the lever shaft 63. As shown in FIG. 8, the rotation connecting portion 64 rotates in the lever chamber 69.
  • the two O-rings 62 are fixed to the lever shaft 63.
  • the lever 60 is rotatably supported in a state where the lever shaft 63 is inserted into the hole provided in the support wall 68 from the lever chamber 69 side and the raising base connecting portion 61 faces the optical accommodating portion 33.
  • the hollow lever chamber 69 is hermetically sealed by the O-ring 62 and the lever chamber lid 67.
  • FIG. 20 is a cross-sectional view of the insertion portion 30 taken along line XX-XX in FIG.
  • the XX-XX cross section is a cross section in which the insertion portion 30 is cut in the longitudinal direction at the position of the elevator connection portion 61.
  • FIG. 21 is a cross-sectional view of the insertion portion 30 taken along line XXI-XXI in FIG.
  • the XXI-XXI cross section is a cross section in which the longitudinal direction of the insertion portion 30 is cut perpendicularly at the positions of the first engagement portion 46 and the second engagement portion 72.
  • the endoscope cap 50 has the opening end portion 56 facing the insertion portion 30 side.
  • the first engaging portion 46 on the inner surface of the endoscope cap 50 and the third engaging portion 29 on the distal end portion 31 are engaged.
  • the first wedge surface 461 and the surface on the operation portion side of the third engaging portion 29 are in contact with each other.
  • the second engagement portion 72 on the inner surface of the endoscope cap 50 and the fourth engagement portion 28 of the distal end portion 31 are engaged.
  • the endoscope cap 50 is fixed to the distal end portion 31 by being engaged with the distal end portion 31 at two opposite locations on the inner surface.
  • the first engagement portion 46 is disposed closer to the opening end portion 56 than the second engagement portion 72. Further, the engaging portion between the first engaging portion 46 and the third engaging portion 29 is engaged by abutment between flat surfaces, whereas the second engaging portion 72 is a rounded surface. The fourth engaging portion 28 is engaged. Therefore, the first engaging portion 46 is engaged with the distal end portion 31 more firmly than the second engaging portion 72.
  • the elevator base connecting part 61 which is an axis having a rectangular cross section is inserted into the U-shaped groove type lever connecting part 81. Thereby, the lever 60 and the raising base 80 are engaged.
  • the recess 48 is arranged at a position corresponding to the first cavity 93.
  • the cover 52 is thinned by denting the inner surface of the cylindrical portion.
  • the inner surface of the thin portion of the cover 52 and the lever chamber lid 67 are opposed to each other with a space therebetween to form a second cavity portion 94.
  • the head of the cap screw 66 is disposed in the second cavity portion 94. That is, the second cavity portion 94 is a space that accommodates the head portion of the lid screw 66 that is a fixing member that fixes the lever chamber lid 67.
  • the user presses the concave portion 48 and the opposite side with a finger as shown by the white arrow in FIG. Since the first cavity portion 93 and the second cavity portion 94 exist on the back side of the portion to be pressed, the cover 52 is deformed.
  • the recessed portion 48 is a flexible portion that is thinner than other portions in the circumferential direction of the cover 52 and is easily bent when pressed by a finger or the like. Therefore, the user can easily deform the endoscope cap 50.
  • FIG. 22 is a cross-sectional view of the insertion portion 30 in which the cover 52 is pressed and deformed.
  • FIG. 22 shows the same cross section as FIG. The cover 52 is deformed so that the pressed portion moves inward and the portion in between swells outward. Since the 1st engaging part 46 and the 2nd engaging part 72 are arrange
  • the endoscope cap 50 When the user pulls the endoscope cap 50 to the distal end side while pressing, the engagement between the lever coupling portion 81 and the elevator coupling portion 61 is released, and the endoscope cap 50 is removed from the distal end of the insertion portion 30. Can be removed. As shown in FIG. 4, the recess 48 has a side orthogonal to the insertion direction. For this reason, a user's finger
  • the user confirms that the lever coupling portion 81 and the elevator base coupling portion 61 are in the correct orientation, and then pushes the endoscope cap 50 into the distal end of the insertion portion 30, thereby causing the endoscope cap 50.
  • the second wedge surface 462 of the first engagement portion 46 is inclined with respect to the longitudinal direction of the cylindrical portion of the cover 52, so that the first engagement portion 46 is at the distal end portion 31. It is difficult to catch and easy to install.
  • the tubular channel 34 is connected to a channel outlet 35 provided at the distal end portion 31.
  • the channel outlet 35 extends in a trumpet shape toward the window 53.
  • a bending portion 27 that protrudes gently toward the distal end side is provided.
  • FIG. 23 is a cross-sectional view of the insertion portion 30 with the elevator 80 raised.
  • FIG. 23 shows the same cross section as FIG. A configuration for raising the elevator 80 will be described with reference to FIGS. 7, 8, 19, 20, and 21.
  • the lever shaft 63 is inserted into a through hole provided in the support wall 68 from the lever chamber 69 side, and the raising base connecting portion 61 projects to the opposite side of the support wall 68 as shown in FIG.
  • the lever chamber 69 is sealed watertight by the O-ring 62 and the lever chamber lid 67 (see FIG. 5). Therefore, body fluid or the like does not adhere to the inside of the lever chamber 69 and the path of the raising wire 24 during use of the endoscope 10.
  • the elevator 80 is accommodated inside the cover 52.
  • the depression 84 is disposed at a position where the treatment instrument tip 41 protruding from the channel outlet 35 can be gently bent upward in FIG.
  • the lever 60 rotates about the lever shaft 63 as an axis.
  • the raising base connecting portion 61 rotates integrally with the lever shaft 63. Since the raising base connecting portion 61 is connected to the lever connecting portion 81, the raising base 80 also rotates integrally with the lever 60 so as to rise. As a result, the distance between the raising base 80 and the window part 53 changes.
  • FIG. 23 shows a state where the elevator 80 is rotated.
  • the treatment instrument tip 41 protruding from the channel outlet 35 is pushed up by the elevator 80 and rises.
  • the treatment instrument distal end portion 41 is further pushed into the operation portion side by the edge on the distal end side of the recessed portion 84 from the state pressed against the distal end of the bending portion 27. Therefore, the treatment instrument distal end portion 41 can be bent at an angle larger than the pivotable angle Z of the elevator base 80 described with reference to FIG.
  • the endoscope 10 is stored in a state where the endoscope cap 50 is removed, and cleaning is performed.
  • Endoscope caps 50 are provided in a state where they are sealed one by one in a sterilization pack and then put into a paper box, for example, in units of 10 and then sterilized with an electron beam. It is desirable that the number of endoscope caps 50 placed in the paper box is the minimum sales unit, that is, the minimum unit sold to the user at a time.
  • the material of the cover 52, the pedestal 70, and the raising base 80, which are components of the endoscope cap 50, may be a material having high durability against electron beam sterilization, such as radiation-resistant grade polypropylene or polycarbonate. desirable.
  • the cover 52 may be formed by integrating resin such as polycarbonate and rubber such as silicone rubber by insert molding or adhesion.
  • the endoscope 10 can be made thin by thinning the cover 52 using rubber in part.
  • the user takes out the endoscope cap 50 from the sterilization pack.
  • the user inserts the endoscope cap 50 by pushing the endoscope cap 50 into the distal end of the insertion portion 30 after confirming that the lever coupling portion 81 and the raising base coupling portion 61 are in the correct orientation. Attach to part 30.
  • the second wedge surface 462 of the first engagement portion 46 is inclined with respect to the longitudinal direction of the cylindrical portion of the cover 52, the first engagement portion 46 is not easily caught by the tip portion 31, Easy to install.
  • the first engagement portion 46 is elastically restored and engaged with the third engagement portion 29 when the first wedge surface 461 gets over the operation portion side surface of the third engagement portion 29. Since the opposing first wedge surface 461 and the surface on the operation portion side of the third engagement portion 29 are flat surfaces perpendicular to the insertion direction, they are reliably engaged. The user confirms that the endoscope cap 50 is firmly fixed to the distal end of the insertion portion 30 by lightly pulling the endoscope cap 50 or the like.
  • the user inserts the insertion unit 30 from the inspection subject's mouth.
  • the user guides the distal end of the insertion portion 30 to the target site while observing the video taken through the observation window 36.
  • the user inserts the treatment tool 40 or the like according to the purpose from the channel inlet 22.
  • the user After confirming that the treatment instrument distal end portion 41 protrudes from the distal end of the insertion portion 30 and is positioned in the vicinity of the target portion, the user operates the raising operation lever 21 to guide the treatment instrument distal end portion 41 to the target portion. .
  • the user removes the treatment tool 40 from the channel 34.
  • the user removes the endoscope 10 from the person to be inspected and ends the inspection or treatment.
  • the cover 52 can be easily removed by pulling the cover 52 while pressing with two fingers as described above.
  • the endoscope cap 50 of the present embodiment is so-called single use, and is discarded after being used once.
  • the user performs a process such as cleaning the endoscope 10 after removing the endoscope cap 50 in preparation for the next use.
  • a process such as cleaning the endoscope 10 after removing the endoscope cap 50 in preparation for the next use.
  • the endoscope 10 after the endoscope cap 50 is removed does not have the elevator 80.
  • the elevator connection portion 61 used when fixing the elevator 80 is exposed at the tip 31.
  • the endoscope 10 does not require a special cleaning operation or the like for cleaning the complex structure in the vicinity of the raising base 80 and the raising wire 24. Therefore, it is possible to provide the endoscope 10 with the elevator, which can be operated efficiently with a short processing time between cases. According to the present embodiment, the operability at the start of the endoscopic examination procedure is improved, that is, the operation of attaching the endoscope cap 50 to the endoscope 10 is facilitated, and the endoscope 10 is easily cleaned. And both.
  • a slit or the like is provided at the edge of the pedestal fixing hole 57 described with reference to FIG. 18, and the pedestal fixing hole 57 is broken when the endoscope cap 50 is removed from the distal end portion 31, and the first fixing protrusion 73 is formed. May be removed from the base fixing hole 57.
  • the pedestal 70 and the raising base 80 remaining on the distal end portion 31 side can be easily removed and discarded by the user. By disassembling at the same time as the removal, it is possible to provide the endoscope cap 50 that prevents the user from reusing it by mistake.
  • a slit or the like may be provided at the base of the first engaging portion 46 so that the first engaging portion 46 is broken when the endoscope cap 50 is removed from the distal end portion 31.
  • a slit or the like may be provided at the base of the second engagement portion 72 so that the second engagement portion 72 is broken when the endoscope cap 50 is removed from the distal end portion 31.
  • the stop surface 88 may not be parallel to the surface corresponding to the two U-shaped vertical lines of the lever connecting portion 81.
  • the elevator base 80 can rotate counterclockwise from the state shown in FIG. By doing in this way, it is possible to provide the endoscope 10 in which the treatment instrument 40 can be inserted without strongly bending the treatment instrument distal end portion 41.
  • the raising portion 83 is pushed back by a force for the treatment instrument 40 to return to a straight state.
  • a force twisting in the counterclockwise direction in FIG. 23 is applied to the endoscope cap 50 with the second engagement portion 72 as an axis.
  • the first engagement portion 46 is disposed closer to the opening end portion 56 than the second engagement portion 72, and the first engagement portion 46 is more than the second engagement portion 72. Since the endoscope cap 50 is firmly engaged with the distal end portion 31, the endoscope cap 50 is unlikely to be detached from the insertion portion 30. In addition, by making the protrusion amount of the first engagement portion 46 larger than the protrusion amount of the second engagement portion 72, the endoscope cap 50 can be further prevented from coming off from the insertion portion 30. .
  • the endoscope 10 is provided with an elevator 80 and is a side view type, and is therefore suitable for diagnosis and treatment of the duodenum and pancreaticobiliary region.
  • the endoscope 10 of the present embodiment when performing procedures such as ERCP (Endoscopic Retrograde Cholangio Pancreatography), EST (Endoscopic Sphincterotomy), EBD (Endoscopic Biliary Drainage), etc., the endoscope 10 of the present embodiment. Is suitable.
  • the treatment tool 40 is guided to the inside of the duodenal papilla and the pancreatic duct and the common bile duct that open to the duodenal papilla in the duodenal wall to perform treatment and the like.
  • the side-view type endoscope 10 may be referred to as a side-view endoscope.
  • the endoscope 10 suitable for diagnosis of the duodenum and pancreaticobiliary region may be referred to as a duodenum endoscope.
  • the pedestal 70 and the cover 52 are separate bodies, their shapes are simple. Therefore, it can be manufactured at low cost by, for example, injection molding.
  • an expandable / contractible SMA (Shape memory alloy) actuator may be used instead of the raising wire 24.
  • one end of the SMA actuator is fixed to the wire fixing portion 65 and the other end is fixed to the tip portion 31.
  • a heater is arranged around the SMA actuator. The heater is operated in conjunction with the movement of the raising operation lever 21.
  • the lever 60 and the elevator base 80 rotate. Any other linear actuator can be used for the rotating portion.
  • Rotating actuators such as small motors may be used for the rotating part.
  • a small motor in the lever chamber 69 and connecting the motor shaft and the lever shaft 63, the lever 60 can be rotated.
  • the elevator 80 can be operated using means that does not use the user's hand, such as voice control.
  • the endoscope cap 50 may be provided in a state in which the raising base 80 and the cover 52 or the base 70 are temporarily fixed with an adhesive material or the like with the lever connecting portion 81 facing the opening end portion 56 side. . By doing so, it is possible to provide the endoscope cap 50 that can be used easily without the trouble of confirming the orientation of the elevator base 80 before attaching the endoscope cap 50 to the insertion portion 30.
  • the user may select and use an endoscope cap 50 having specifications according to the procedure from a plurality of types of endoscope caps 50 having different specifications.
  • an endoscope cap 50 provided with a stopper that restricts the pivotable range of the elevator 80 may be provided.
  • narrowing the rotatable range for example, when an expensive and precise device such as an ultrasonic probe or an ultra-fine endoscope is used in combination, the device can be prevented from being damaged due to excessive bending.
  • the treatment instrument 40 is less likely to sway from side to side during startup, and tends to be easily operated.
  • a plurality of types of endoscope caps 50 having raising bases 80 having different shapes of the recessed portions 84 may be provided.
  • the endoscope cap 50 including the hollow portion 84 having a shape that can easily hold the thin treatment instrument 40 the thin treatment instrument 40 such as a guide wire can be easily operated accurately.
  • the endoscope 10 may be a so-called ultrasonic endoscope having an ultrasonic transducer at the tip.
  • the endoscope cap 50 desirably has a hole through which the ultrasonic transducer is inserted in the bottom.
  • the endoscope 10 may be an endoscope for the lower digestive tract.
  • the endoscope 10 may be a so-called rigid endoscope having a rigid insertion portion 30.
  • the endoscope 10 may be a so-called industrial endoscope used for inspection of an engine and piping.
  • the endoscope cap 50 may be reusable. In this case, the endoscope cap 50 removed from the insertion portion 30 is visually inspected by the user, and if it is not damaged, it is reused after being cleaned. Since the opening end portion 56 of the endoscope cap 50 is wide open, it is possible to easily perform processing such as cleaning as compared with the state where the endoscope cap 50 is still attached to the insertion portion 30. Since the endoscope cap 50 is small, it can be easily put in a sterilization pack and subjected to, for example, autoclave sterilization.
  • the endoscope 10 may include a fixing mechanism that fixes the raising operation lever 21 at an arbitrary angle.
  • the user can release the finger from the raising operation lever 21 after raising the treatment instrument distal end portion 41 at a desired angle, and can focus on the operation of the bending knob 23 and the like.
  • the position of the 1st engaging part 46 and the 2nd engaging part 72 is not limited to the position demonstrated above.
  • the present embodiment relates to the endoscope 10 in which the shape of the first engaging portion 46 is different from that of the first embodiment. Description of portions common to the first embodiment is omitted.
  • FIG. 24 is an enlarged view of the first engagement portion 46 of the second embodiment as viewed from the opening end portion 56 side.
  • FIG. 25 is a rear view of the cover 52 according to the second embodiment. In FIG. 25, a part of the cylindrical portion is broken at a portion facing the first engaging portion 46 to show the first engaging portion 46.
  • the first engaging portion 46 has a wedge shape in which the dimension along the circumferential direction of the cylindrical portion becomes thinner from the distal end side of the endoscope 10 toward the operation portion side, and the distal end is a flat surface. .
  • the lower surface of the first engagement portion 46 in FIG. 24 is a plane perpendicular to the paper surface of FIG. According to the present embodiment, it is possible to provide the endoscope 10 in which the user can easily attach the endoscope cap 50 to the insertion portion 30.
  • first engagement portion 46 may have a wedge shape in which the left and right surfaces in FIG. 25 intersect and the opening end portion 56 side is sharp.
  • the present embodiment relates to the endoscope 10 in which the shape of the first engaging portion 46 is different from those of the first and second embodiments. Description of portions common to the second embodiment is omitted.
  • FIG. 26 is a rear view of the cover 52 of the third embodiment. Also in FIG. 26, a part of the cylindrical portion is broken at a portion facing the first engagement portion 46 to show the first engagement portion 46.
  • the first engaging portion 46 has a wedge shape in which the dimension along the circumferential direction of the cylindrical portion becomes narrower from the operation portion side to the distal end side of the endoscope 10 and the distal end is a flat surface. . According to the present embodiment, it is possible to provide the endoscope 10 in which the user can easily remove the endoscope cap 50 from the insertion portion 30 after use.
  • the present embodiment relates to the endoscope 10 in which the shape of the first engaging portion 46 is different from any of the first to third embodiments. Description of portions common to the first embodiment is omitted.
  • FIG. 27 is an enlarged view of the first engagement portion 46 of the fourth embodiment as viewed from the opening end portion 56 side.
  • the first engaging portion 46 has a first wedge surface 461 on the bottom side and a second wedge surface 462 on the opening end portion 56 side.
  • the first wedge surface 461 is a plane that is continuous with the bottom surface of the protrusion 49 and extends along the edge of the window 53.
  • the second wedge surface 462 is a flat surface that is inclined with respect to the axial length direction of the tube portion with the inner side at the bottom side and the outer side at the opening end side.
  • the first engagement portion 46 is a wedge shape in which the dimension along the circumferential direction of the cylindrical portion becomes narrower from the distal end side of the endoscope 10 toward the operation portion side. According to the present embodiment, it is possible to provide the endoscope 10 in which the user can easily attach the endoscope cap 50 to the insertion portion 30.
  • the present embodiment relates to the endoscope 10 having the first engagement portion 46 that is easily removed from the distal end portion 31 when the cover 52 is deformed by pressing. Description of portions common to the first embodiment is omitted.
  • FIG. 28 is a cross-sectional view of the insertion portion 30 of the fifth embodiment.
  • FIG. 28 is a cross-sectional view of the insertion portion 30 at the same position as the XXI-XXI line of FIG.
  • the first engaging portion 46 protrudes from a part of the protruding portion 49 and engages with the groove-shaped third engaging portion 29.
  • the tip end of the first engaging portion 46 is inclined downward to the right with respect to the edge of the third engaging portion 29.
  • FIG. 29 is a cross-sectional view of the insertion portion 30 in which the cover 52 of the fifth embodiment is pressed and deformed.
  • FIG. 29 shows the same cross section as FIG.
  • the cover 52 is mainly deformed at a thin portion, and the first engaging portion 46 and the second engaging portion 72 are moved outward. Due to the deformation of the cover 52, the lower side of the first engagement portion 46 is parallel to the edge of the third engagement portion 29.
  • the endoscope cap 50 is detached from the distal end of the insertion portion 30 by disengaging the first engagement portion 46 and the third engagement portion 29 with the minimum amount of deformation. It is possible to provide an endoscope 10 that can perform the above.
  • the shape of the lower side of the first engaging portion 46 can be appropriately determined according to the deformation of the entire cover 52 when pressed.
  • the present embodiment relates to an endoscope 10 having an elevator base connecting portion 61 whose tip side is narrower than the operation portion side along the insertion direction. Description of portions common to the first embodiment is omitted.
  • FIG. 30 is a cross-sectional view of the insertion portion 30 of the sixth embodiment.
  • FIG. 30 is a cross-sectional view taken along the longitudinal direction of the insertion portion 30 at the position of the raising base connecting portion 61 as in FIG.
  • the elevator base connecting portion 61 has a wedge shape whose tip side is thinner than the operation portion side.
  • the lever connecting portion 81 is V-shaped with the operation portion side expanded.
  • the lever connecting portion 81 since the entrance of the lever connecting portion 81 is widened and the tip of the raising base connecting portion 61 is narrowed, the lever can be easily connected even when the raising base 80 is slightly rotated.
  • the tip of the elevator connection part 61 enters the part 81.
  • the raising base connecting portion 61 enters the back of the lever connecting portion 81 and the raising base 80 is guided in the correct direction.
  • the raising base connecting portion 61 and the lever connecting portion 81 can adopt any shapes that can be engaged with each other.
  • the present embodiment relates to the endoscope 10 in which the first engaging portion 46 is plate-shaped. Description of portions common to the first embodiment is omitted.
  • FIG. 31 is a perspective view of the endoscope cap 50 according to the seventh embodiment as viewed from the attachment side to the endoscope 10.
  • the cover 52 has a plate-like protruding portion 49 that protrudes inward along the edge of the window portion 53 on the opening end portion 56 side.
  • a plate-like first engaging portion 46 further protrudes from a part of the tip of the protruding portion 49.
  • the protruding portion 49 and the first engaging portion 46 are flush with each other along the edge of the window portion 53.
  • FIG. 32 is a cross-sectional view of the insertion portion of the seventh embodiment.
  • FIG. 32 is a cross section in which the insertion portion 30 is cut in the longitudinal direction at the position of the raising base connecting portion 61 as in FIG. 33 is a cross-sectional view of the insertion portion taken along line XXXIII-XXXIII in FIG.
  • the XXXIII-XXXIII cross section is a cross section that passes through the operating portion side edge of the fourth engagement portion 28 and the third engagement portion 29 and is perpendicular to the longitudinal direction of the insertion portion 30.
  • a configuration in which the endoscope cap 50 is attached to and detached from the distal end of the insertion portion 30 will be described with reference to FIGS. 19 and 20.
  • the first engagement portion 46 is plate-shaped, it is difficult to be deformed even when an external force is applied to the endoscope cap 50 while the endoscope 10 is being used. Therefore, when the user does not intend to remove the endoscope cap 50, the endoscope cap 50 is unlikely to be detached from the endoscope 10.
  • the user presses the concave portion 48 and the opposite side with two fingers. Since the first cavity portion 93 and the second cavity portion 94 exist on the back side of the portion to be pressed, the cover 52 is deformed into a substantially elliptical shape having the pressing direction as the short axis and the direction orthogonal to the pressing direction as the long axis.
  • the first engaging portion 46 and the second engaging portion 72 described above are provided in the vicinity of the portion that becomes the long axis of the deformed cover 52.
  • the first engaging portion 46 and the second engaging portion 72 are moved outward, and the engagement with the third engaging portion 29 and the fourth engaging portion 28 is performed. Come off.
  • the recessed portion 48 is a flexible portion that is thinner than other portions in the circumferential direction of the cover 52 and is easily bent when pressed by a finger or the like. Therefore, the user can easily deform the endoscope cap 50.
  • the endoscope cap 50 When the user pulls the endoscope cap 50 to the distal end side while pressing, the engagement between the lever coupling portion 81 and the elevator coupling portion 61 is released, and the endoscope cap 50 is removed from the distal end of the insertion portion 30. Can be removed. As shown in FIG. 4, the recess 48 has a side orthogonal to the insertion direction. For this reason, a user's finger
  • the user confirms that the lever coupling portion 81 and the elevator base coupling portion 61 are in the correct orientation, and then pushes the endoscope cap 50 into the distal end of the insertion portion 30, thereby causing the endoscope cap 50. Can be attached to the insertion portion 30. As shown in FIG. 32, since the end of the first engaging portion 46 on the opening end portion 56 side is chamfered, the first engaging portion 46 is not easily caught on the distal end portion 31, and attachment is easy.
  • the present embodiment relates to the endoscope 10 in which the third engagement portion 29 is a protrusion. Description of portions common to the seventh embodiment is omitted.
  • FIG. 35 is a cross-sectional view of the insertion portion 30 of the eighth embodiment.
  • FIG. 35 is a cross section in which the insertion portion 30 is cut in the longitudinal direction at the position of the elevator connection portion 61 as in FIG. 36 is a cross-sectional view of the insertion portion 30 taken along the line XXXVI-XXXVI in FIG.
  • the third engaging portion 29 is a protrusion protruding from the first flat surface portion 321.
  • the first engaging portion 46 is a recess provided on the window portion 53 side of the protruding portion 49.
  • the first engagement portion 46 and the third engagement portion 29 of the tip portion 31 are engaged.
  • the second engaging portion 72 and the fourth engaging portion 28 are engaged.
  • the endoscope cap 50 is fixed to the distal end of the insertion portion 30 because the endoscope cap 50 is engaged with the distal end portion 31 at two locations on the inner surface facing each other.
  • the first engaging portion 46 and the third engaging portion 29 can adopt any shapes that can be engaged with each other.
  • the 2nd engaging part 72 and the 4th engaging part 28 can also employ
  • the present embodiment relates to an endoscope 10 having an elevator base connecting portion 61 whose tip side is narrower than the operation portion side along the insertion direction. Description of portions common to the seventh embodiment is omitted.
  • FIG. 37 is a cross-sectional view of the insertion portion 30 of the ninth embodiment.
  • FIG. 37 is a cross section in which the insertion portion 30 is cut in the longitudinal direction at the position of the elevator connection portion 61 as in FIG.
  • the elevator base connecting portion 61 has a wedge shape whose tip side is thinner than the operation portion side.
  • the lever connecting portion 81 is V-shaped with the operation portion side expanded.
  • the lever connecting portion 81 since the entrance of the lever connecting portion 81 is widened and the tip of the raising base connecting portion 61 is narrowed, the lever can be easily connected even when the raising base 80 is slightly rotated.
  • the endoscope 10 which can engage the part 81 and the raising base connection part 61 can be provided.
  • the raising base connecting portion 61 and the lever connecting portion 81 can adopt any shapes that can be engaged with each other.
  • the present embodiment relates to the endoscope 10 having an index in the vicinity of the distal end of the insertion portion 30 and in the endoscope cap 50. Description of portions common to the first embodiment is omitted.
  • FIG. 38 is a front view of the distal end of the insertion portion 30 according to the tenth embodiment.
  • the insertion unit 30 has a first index 261.
  • the first index 261 is formed on the surface of the flexible tube that covers the surface of the bending portion 13 by printing or laser processing.
  • the cover 52 has a second index 262 in the vicinity of the opening end 56.
  • the second index 262 is a recess or protrusion formed integrally on the surface of the cover 52.
  • the second index 262 may be formed on the surface of the cover 52 by printing or laser processing.
  • the second index 262 may be formed by cutting or the like at or near the open end 56.
  • FIG. 39 is an explanatory diagram for explaining the operation of attaching the endoscope cap 50 according to the tenth embodiment.
  • FIG. 39A shows a state at the start of work.
  • the operation unit 20 of the endoscope 10 is placed on an endoscope hanger or the like (not shown).
  • the endoscope 10 is connected to a video processor or the like (not shown).
  • the user holds the vicinity of the distal end of the insertion portion 30 with the right hand and visually confirms that the orientation of the raising base connecting portion 61 is correct. If the orientation of the elevator base connecting portion 61 is not correct, the user operates the raising operation lever 21 to correct the orientation of the elevator base connecting portion 61.
  • the user holds the endoscope cap 50 with his left hand, and visually confirms that the direction of the lever connecting portion 81 is correct. If the direction of the lever connecting portion 81 is not correct, the user moves the elevator base 80 with a finger to correct the direction of the lever connecting portion 81. The user orients the insertion portion 30 and the endoscope cap 50 so that the opening end portion 56 is directed toward the distal end of the insertion portion 30 and the first index 261 and the second index 262 face each other.
  • FIG. 39B shows a state during the work.
  • the user puts the endoscope cap 50 over the distal end of the insertion portion 30 from the opening end portion 56.
  • the user moves the endoscope cap 50 and the insertion unit 30 in a direction in which the first index 261 and the second index 262 are brought closer to each other.
  • the user may move the endoscope cap 50 by pushing the bottom of the endoscope cap 50, that is, the left surface in FIG. 39, toward the insertion portion 30.
  • FIG. 30C shows a state where the attachment of the endoscope cap 50 to the insertion portion 30 is completed.
  • the user can confirm that the attachment of the endoscope cap 50 has been completed. .
  • the user can also confirm that the attachment of the endoscope cap 50 has been completed by a tactile sensation such as a click feeling when the first engaging portion 46 is engaged with the third engaging portion 29.
  • the user removes the left hand from the endoscope cap 50 and holds the operation unit 20 on the hanger on the left hand.
  • the user presses the recess 48 with one of the two fingers, and presses the opposite side, that is, the region indicated by P in FIG.
  • the user presses the cover 52 with two fingers to lightly deform it.
  • the first engagement portion 46 moves outward and is disengaged from the third engagement portion 29.
  • the user removes the endoscope cap 50 from the distal end of the insertion portion 30 by pulling the endoscope cap 50 toward the distal end side of the insertion portion 30.
  • the user who uses the endoscope 10 places the endoscope cap 50 at the distal end of the insertion portion 30 with the first index 261 and the second index 262 aligned in the circumferential direction. By pushing in, it is possible to quickly attach the endoscope cap 50 in the correct direction. Further, the user visually confirms that the first index 261 and the second index 262 are in close contact with each other as shown in FIG. 38, whereby the endoscope cap 50 is pushed to a predetermined position. It is possible to confirm.
  • the shape, size, etc. of the first index 261 and the second index 262 are arbitrary.
  • the present embodiment relates to the endoscope 10 that uses the shape of the endoscope cap 50 itself instead of the second index 262. Description of parts common to the tenth embodiment is omitted.
  • FIG. 40 is a front view of the distal end of the insertion portion 30 according to the eleventh embodiment.
  • the insertion unit 30 has a first index 261.
  • the recess 48 provided on the surface of the cover 52 is used instead of the second index 262 of the tenth embodiment. That is, the recess 48 functions as the second index 262.
  • FIG. 41 is an explanatory diagram for explaining the operation of attaching the endoscope cap 50 according to the eleventh embodiment.
  • FIG. 41A shows a state at the start of work.
  • the user holds the vicinity of the distal end of the insertion portion 30 with the right hand and visually confirms that the orientation of the raising base connecting portion 61 is correct.
  • the user holds the endoscope cap 50 with the left hand and visually confirms that the direction of the lever connecting portion 81 is correct.
  • the user aligns the insertion portion 30 and the endoscope cap 500 so that the opening end portion 56 is directed toward the distal end of the insertion portion 30 and the first index 261 and the concave portion 48 face each other.
  • FIG. 41B shows a state during the work.
  • the user puts the endoscope cap 50 over the distal end of the insertion portion 30 from the opening end portion 56.
  • the user moves the endoscope cap 50 and the insertion portion 30 in a direction in which the concave portion 48 and the second index 262 are brought closer to each other.
  • FIG. 30C shows a state where the attachment of the endoscope cap 50 to the insertion portion 30 is completed.
  • the user who uses the endoscope 10 pushes the endoscope cap 50 into the distal end of the insertion portion 30 in a state where the first index 261 and the recess 48 are aligned in the circumferential direction.
  • the user visually confirms that the opening end portion 56 and the first index 261 are in close contact with each other as shown in FIG. 40, whereby the endoscope cap 50 has been pushed to a predetermined position. It is possible to confirm.
  • the shape, size, etc. of the first index 261 are arbitrary. Any part of the cover 52, such as the edge of the window 53, can be used in place of the second indicator 262.
  • an endoscope cap that can be attached to and detached from an endoscope, including a lever that is rotatably provided at a distal end of an insertion portion of the endoscope, and a rotating portion that rotates the lever.
  • a bottomed cylindrical cover that has an open end and is detachable from the open end to the distal end of the insertion portion of the endoscope;
  • a wedge-shaped first engagement portion projecting inward from the inner surface of the cylindrical portion of the cover;
  • An endoscope cap comprising: a lever coupling portion coupled to the lever; and a raising base provided on the inner side of the cover so as to be rotatable.
  • the first engagement portion has a wedge shape having a first wedge surface disposed on the bottom side of the cover and a second wedge surface disposed on the opening end side.
  • the cover has a window portion that opens to the cylindrical portion,
  • the endoscope cap according to any one of appendices 1 to 3, wherein the first wedge surface is a surface continuous with an edge of the window portion on the opening end side.
  • a pivotable elevator connection portion exposed on the surface of the distal end of the insertion portion;
  • a bottomed cylindrical cover having an open end and detachable from the open end to the tip of the insertion portion, and a wedge-shaped first projecting inwardly from the inner surface of the cylindrical portion of the cover
  • An endoscope cap that includes an engaging portion and a lever connecting portion that is connected to the raising base connecting portion, and includes a raising base that is rotatably provided inside the cover;
  • a third engagement portion provided in the insertion portion and engaged with the first engagement portion;
  • An endoscope comprising: a hollow portion formed between an inner surface of a cylindrical portion of the cover and the insertion portion.
  • (Appendix 8) Grasping the insertion part of the endoscope having a rotatable elevator coupling part exposed on the surface of the insertion part, It has an open end, and can be attached to and detached from the end of the insertion portion of the endoscope from the open end, and has a hollow portion between the end of the insertion portion of the endoscope when attached.
  • an endoscope cap that can be attached to and detached from an endoscope, including a lever that is rotatably provided at a distal end of an insertion portion of the endoscope, and a rotating portion that rotates the lever.
  • a bottomed cylindrical cover that has an open end and is detachable from the open end to the distal end of the insertion portion of the endoscope;
  • a first engagement portion provided on the inner surface of the cylindrical portion of the cover;
  • An endoscope cap comprising: a lever coupling portion coupled to the lever; and a raising base provided on the inner side of the cover so as to be rotatable.
  • the cover has a window portion that opens to the cylindrical portion, The endoscope cap according to appendix 10, wherein the protrusion is provided closer to the opening end than the window.
  • Appendix 12 The endoscope cap according to appendix 11, wherein the protrusion is provided on an edge of the window portion on the opening end side.
  • the insertion portion of the endoscope has a concave third engagement portion at the tip,
  • the endoscope cap according to any one of Supplementary Note 10 to Supplementary Note 12, wherein the first engagement portion is engaged with the third engagement portion.
  • Appendix 15 It is fixed to the inside of the cover, and has a pedestal provided with an elevator mounting hole that rotatably supports the elevator.
  • the insertion portion of the endoscope has a concave fourth engagement portion at the tip,
  • the endoscope cap according to any one of supplementary notes 15 to 17, wherein the second engagement portion engages with the fourth engagement portion.
  • Appendix 20 The endoscope cap according to appendix 9, wherein the first engagement portion is a recess provided on the inner surface of the cover.
  • a pivotable elevator connection portion exposed on the surface of the distal end of the insertion portion; A bottomed cylindrical cover that has an open end and is attachable to and detachable from the open end to the tip of the insertion portion; a first engagement portion provided on an inner surface of the cylindrical portion of the cover; An endoscope cap including a lever connecting portion connected to the raising base connecting portion, and including a raising base provided inside the cover in a rotatable manner; A third engagement portion provided in the insertion portion and engaged with the first engagement portion; An endoscope comprising: a hollow portion formed between an inner surface of a cylindrical portion of the cover and the insertion portion.
  • the raising base connecting portion protrudes from a hollow lever chamber protruding in the insertion direction from a part of the distal end of the insertion portion,
  • the lever chamber is covered with a plate-shaped lever chamber lid,
  • a fixing member for fixing the lever chamber lid includes a head protruding on the surface of the lever chamber lid, The endoscope according to appendix 23, wherein the head is disposed in the cavity.
  • Appendix 25 The endoscope according to any one of appendix 21 to appendix 24, wherein the hollow portion is provided at two locations facing each other across the insertion direction.
  • (Appendix 28) Grasping the insertion part of the endoscope having a rotatable elevator coupling part exposed on the surface of the insertion part, It has an open end, and can be attached to and detached from the end of the insertion portion of the endoscope from the open end, and has a hollow portion between the end of the insertion portion of the endoscope when attached. It has a bottom cylindrical cover, a first engaging part provided on the inner surface of the cylindrical part of the cover, and a lever connecting part connected to the raising base connecting part, and is provided inside the cover so as to be rotatable.
  • the endoscope cap including the raised platform is pressed at two opposing locations outside the cylindrical portion of the cover, Pulling the endoscope cap toward the distal end side along the insertion direction. Removal method of the endoscope cap.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Endoscopes (AREA)

Abstract

L'invention concerne un endoscope (10) qui est équipé d'un capuchon endoscopique (50) avec un élévateur fixé (80), ledit capuchon endoscopique (50) pouvant être facilement fixé à l'extrémité distale de l'endoscope (10). Cet endoscope (10) comprend : une partie connexion d'élévateur (61) qui est rotative et exposée sur la surface d'extrémité distale d'une unité d'insertion (30) ; un premier indicateur (261) qui est disposé sur l'unité d'insertion (30) ; et un capuchon endoscopique (50) comprenant un couvercle de forme cylindrique profond (52) qui a une extrémité ouverte (56) et qui peut être fixé de manière amovible à l'extrémité distale de l'unité d'insertion (30) à partir de ladite extrémité ouverte (56), et un élévateur (80) qui a un second indicateur (262) correspondant au premier indicateur (261) disposé sur le couvercle (52) et une partie connexion de levier (81) reliée à la partie connexion d'élévateur (61) et qui est disposée de manière rotative à l'intérieur du couvercle (52).
PCT/JP2017/037200 2016-10-14 2017-10-13 Endoscope et capuchon endoscopique Ceased WO2018070526A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201780056856.2A CN109715038A (zh) 2016-10-14 2017-10-13 一种内窥镜及内窥镜用镜头帽
US16/334,340 US20190223696A1 (en) 2016-10-14 2017-10-13 Endoscope and endoscope cap
DE112017005218.1T DE112017005218T5 (de) 2016-10-14 2017-10-13 Endoskop und Endoskopkappe

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2016-202919 2016-10-14
JP2016202919 2016-10-14
JP2017-020735 2017-02-07
JP2017020735 2017-02-07
JP2017166127A JP2018126488A (ja) 2016-10-14 2017-08-30 内視鏡および内視鏡用キャップ
JP2017-166127 2017-08-30

Publications (1)

Publication Number Publication Date
WO2018070526A1 true WO2018070526A1 (fr) 2018-04-19

Family

ID=61905433

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/037200 Ceased WO2018070526A1 (fr) 2016-10-14 2017-10-13 Endoscope et capuchon endoscopique

Country Status (1)

Country Link
WO (1) WO2018070526A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113939219A (zh) * 2019-06-07 2022-01-14 Hoya株式会社 立起台附件、内窥镜、立起台附件的安装方法及立起台附件的拆卸方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08243071A (ja) * 1995-03-09 1996-09-24 Olympus Optical Co Ltd 内視鏡
JP2002017655A (ja) * 2000-07-07 2002-01-22 Asahi Optical Co Ltd 内視鏡の先端部
JP2009273665A (ja) * 2008-05-15 2009-11-26 Hoya Corp 内視鏡の処置具起上装置付先端フード
JP2009284939A (ja) * 2008-05-27 2009-12-10 Hoya Corp 内視鏡の処置具起上装置付先端フード
JP2016174822A (ja) * 2015-03-20 2016-10-06 富士フイルム株式会社 内視鏡

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08243071A (ja) * 1995-03-09 1996-09-24 Olympus Optical Co Ltd 内視鏡
JP2002017655A (ja) * 2000-07-07 2002-01-22 Asahi Optical Co Ltd 内視鏡の先端部
JP2009273665A (ja) * 2008-05-15 2009-11-26 Hoya Corp 内視鏡の処置具起上装置付先端フード
JP2009284939A (ja) * 2008-05-27 2009-12-10 Hoya Corp 内視鏡の処置具起上装置付先端フード
JP2016174822A (ja) * 2015-03-20 2016-10-06 富士フイルム株式会社 内視鏡

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113939219A (zh) * 2019-06-07 2022-01-14 Hoya株式会社 立起台附件、内窥镜、立起台附件的安装方法及立起台附件的拆卸方法

Similar Documents

Publication Publication Date Title
JP6689799B2 (ja) 内視鏡および内視鏡用キャップ
JP6651029B2 (ja) 内視鏡用キャップ、内視鏡および内視鏡用キャップの取り外し方法
JP6308542B1 (ja) 内視鏡用キャップ、内視鏡および内視鏡用キャップの製造方法
JP2020175222A (ja) 内視鏡用キャップおよび内視鏡
WO2018070515A1 (fr) Capuchon d'endoscope, élévateur, endoscope, procédé de retrait d'un capuchon d'endoscope, et procédé de fabrication d'un capuchon d'endoscope
JP7285804B2 (ja) 内視鏡および内視鏡用キャップの取り外し方法
US12023001B2 (en) Endoscope cap and method of sterilizing endoscope cap
JP6837426B2 (ja) 内視鏡、起上台、内視鏡用キャップ、内視鏡用キャップの取付方法、および、内視鏡用キャップの取り外し方法
JP2019115567A (ja) 起上台および内視鏡
WO2019131836A1 (fr) Élévateur, procédé de fixation d'élévateur et procédé d'enlèvement d'élévateur
WO2018070519A1 (fr) Endoscope et capuchon d'endoscope
WO2018070526A1 (fr) Endoscope et capuchon endoscopique
JP7228331B2 (ja) 内視鏡用キャップ
JP2019115562A (ja) 起上台、内視鏡、および、起上台の取付方法
JP6994935B2 (ja) 内視鏡

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17859390

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17859390

Country of ref document: EP

Kind code of ref document: A1