WO2022196184A1 - 内視鏡 - Google Patents

内視鏡 Download PDF

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Publication number
WO2022196184A1
WO2022196184A1 PCT/JP2022/004836 JP2022004836W WO2022196184A1 WO 2022196184 A1 WO2022196184 A1 WO 2022196184A1 JP 2022004836 W JP2022004836 W JP 2022004836W WO 2022196184 A1 WO2022196184 A1 WO 2022196184A1
Authority
WO
WIPO (PCT)
Prior art keywords
angle knob
shaft
mounting shaft
angle
lock member
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/JP2022/004836
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
正也 井上
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.)
Fujifilm Corp
Original Assignee
Fujifilm 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
Application filed by Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2023506860A priority Critical patent/JP7775282B2/ja
Publication of WO2022196184A1 publication Critical patent/WO2022196184A1/ja
Priority to US18/466,826 priority patent/US20230414079A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00066—Proximal part of endoscope body, e.g. handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0052—Constructional details of control elements, e.g. handles
    • 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 endoscopes.
  • An endoscope includes an insertion section to be inserted into the body of an observation target, and an operation section connected to a proximal end portion of the insertion section.
  • the operation part has an angle knob that changes the direction of the tip of the insertion part as it is rotated, and an angle knob mounting shaft that is inserted through the rotation center of the angle knob and supports the angle knob so that it can rotate freely. is provided.
  • some endoscopes have angle knobs that are detachably attached to the operating portion.
  • the angle knob is detached from the operating portion before shipment, and the angle knob is attached to the operating portion when used.
  • Patent Literature 2 describes an attachment that covers an angle knob. By covering the angle knob with the attachment in this way, it is possible to reduce the operating force required to bend the bending portion.
  • the present invention has been made in view of the above background, and aims to provide an endoscope in which the angle knob can be easily attached and detached.
  • the endoscope of the present invention comprises an insertion section to be inserted into the body of an observation target, an angle knob for changing the orientation of the distal end of the insertion section in accordance with a rotating operation, and an angle knob.
  • an angle knob mounting shaft inserted through the rotation center and rotatably supporting the angle knob, wherein the angle knob is detached from the amble knob mounting shaft before use, and mounted on the amble knob mounting shaft at the time of use.
  • the angle knob is detachably provided at the tip of the amble knob mounting shaft, and the angle knob attached to the angle knob mounting shaft is restricted from moving to the distal side of the amble knob mounting shaft, and the angle knob falls off. Equipped with an angle knob lock member to prevent
  • a shaft provided on one of the angle knob lock member and the amble knob mounting shaft; and an opening provided on the other of the angle knob lock member and the amble knob mounting shaft and through which the shaft is inserted; is provided with a flange having a non-circular cross-section perpendicular to the shaft, the opening is formed in the same shape as the flange, and the angle knob lock member is attached to the shaft after the flange is pierced through the opening. It may be mounted on the amble knob mounting shaft by being rotated around the center.
  • a support groove is provided on the other of the angle knob lock member and the amble knob mounting shaft, and supports the flange penetrating through the opening so as to be rotatable around the shaft. Indeed, the width of the support groove may be narrowed, and the force required to rotate the flange may be increased.
  • a shaft provided on the angle knob lock member and an opening provided on the amble knob mounting shaft through which the shaft is inserted.
  • a first groove portion formed from the tip of the angle knob mounting shaft toward the base end side is connected to the base end side of the angle knob mounting shaft of the first groove portion to mount the angle knob.
  • an arc-shaped second groove centered on the shaft, a third groove connected to the second groove on the side opposite to the first groove, and formed from the proximal side to the distal side of the angle knob mounting shaft; , and the angle knob lock member may be mounted on the angle knob mounting shaft by the protrusion passing through the first groove, the second groove, and the third groove in this order.
  • a biasing member may be provided that biases the shaft portion from the proximal side toward the distal side of the angle knob mounting shaft.
  • a shaft portion provided on the angle knob lock member and an opening provided on the amble knob mounting shaft through which the shaft portion is inserted. is provided, and the angle knob lock member is mounted on the amble knob mounting shaft by deploying the deploying portion within the opening.
  • a release part may be provided that presses the deployment part to release the deployment when the angle knob lock member is further pushed into the opening.
  • the deployment part may be cut off from the shaft part by being pressed, drop off, and be released from deployment.
  • the angle knob lock member has a holding portion that engages with the deploying portion to hold the deploying portion near the shaft portion, and the deploying portion is engaged with the retaining portion and released from deployment by being pressed. good.
  • a pressing member may be provided on the tip side of the amble knob mounting shaft rather than the angle knob, and the angle knob locking member may restrict movement of the angle knob to the tip side of the amble knob mounting shaft via the pressing member.
  • the pressing member may be integrated with the angle knob.
  • FIG. 1 is an external view of an endoscope; FIG. It is an enlarged view of an angle knob and its periphery.
  • 4 is an enlarged view of an angle knob lock member and an angle knob mounting shaft; FIG. It is explanatory drawing of a support groove. It is an enlarged view of an angle knob and its periphery.
  • FIG. 4 is a cross-sectional view of an angle knob and its surroundings; FIG. 4 is a cross-sectional view of an angle knob and its surroundings; It is an enlarged view of an angle knob lock member and a pressing member. It is an enlarged view of an angle knob lock member and a pressing member. It is an enlarged view of an angle knob lock member and a pressing member. It is an enlarged view of an angle knob lock member and a pressing member.
  • FIG. 4 is an enlarged view of an angle knob lock member and an angle knob mounting shaft;
  • FIG. 4 is an enlarged view of an angle knob lock member and an angle knob mounting shaft;
  • FIG. 4 is an enlarged view of an angle knob lock member and an angle knob mounting shaft;
  • FIG. 4 is an enlarged view of an angle knob lock member and an angle knob mounting shaft;
  • FIG. 4 is an explanatory view showing how the angle knob lock member is mounted on the angle knob mounting shaft.
  • FIG. 4 is an explanatory view showing how the angle knob lock member is mounted on the angle knob mounting shaft.
  • FIG. 4 is an explanatory view showing how the angle knob lock member is mounted on the angle knob mounting shaft.
  • FIG. 4 is an explanatory view showing how the angle knob lock member is mounted on the angle knob mounting shaft.
  • FIG. 10 is an explanatory diagram showing how the deployment portion is released from deployment;
  • an endoscope 10 includes an insertion section 12 that is inserted into the body of an observation target. At the distal end 12a of the insertion portion 12, an illumination window 14 for emitting illumination light, an observation window 16 for receiving reflected light from an observation target, and an outlet for a treatment tool such as forceps inserted into the insertion portion 12 from a forceps opening 18. A forceps outlet 20 and the like are provided.
  • a curved portion 30 is provided in the vicinity of the distal end 12a of the insertion portion 12 .
  • the bending portion 30 is provided so as to be freely bendable in the vertical and horizontal directions.
  • Four first to fourth wires 31 to 34 (see FIG. 2) arranged inside the insertion portion 12 are connected to the bending portion 30 . Then, the bending portion 30 bends in the first direction (upward in this embodiment) by pulling the first wire 31 toward the proximal end side of the insertion portion 12 . Further, by pulling the second wire 32 toward the proximal end side of the insertion section 12, the second wire 32 is bent in the second direction (downward in this embodiment).
  • An operation section 40 is connected to the proximal end of the insertion section 12 .
  • First and second angle knobs 51 and 52 are attached to the operation portion 40 when the endoscope 10 is used.
  • a wire pulling mechanism 55 is provided in the operating portion 40, and as shown in FIG. 2, the wire pulling mechanism 55 is provided with an angle knob mounting shaft 60.
  • a first insertion hole 51a is provided in the center of rotation of the first angle knob 51, and the first angle knob 51 is configured such that the angle knob mounting shaft 60 is inserted through the first insertion hole 51a. 60 is rotatably supported.
  • a second insertion hole 52a is provided at the rotation center of the second angle knob 52, and the angle knob mounting shaft 60 is inserted through the second insertion hole 52a so that the second angle knob 52 can be rotated. It is rotatably supported by the mounting shaft 60 .
  • the wire pulling mechanism 55 has a first wire pulling member 61 to which the first and second wires 31 and 32 are connected.
  • the knob 51 is connected to the first wire pulling member 61 and rotates together. Then, by rotating the first angle knob 51 in one direction (counterclockwise in this embodiment), the first wire 31 is pulled to direct the distal end 12a of the insertion portion 12 upward and in the opposite direction (counterclockwise in this embodiment). By rotating it clockwise, the second wire 32 can be pulled to direct the distal end 12a of the insertion portion 12 downward.
  • the wire pulling mechanism 55 also includes a second wire pulling member 62 to which the third and fourth wires 33 and 34 are connected.
  • the two-angle knob 52 is connected to the second wire pulling member 62 and rotates together. Then, by rotating the second angle knob 52 in one direction (counterclockwise in this embodiment), the third wire 33 is pulled to turn the distal end 12a of the insertion portion 12 leftward, and in the opposite direction (counterclockwise in this embodiment). By rotating it clockwise, the fourth wire 34 can be pulled to turn the distal end 12a of the insertion portion 12 rightward.
  • an angle knob lock member 70 is attached to the tip (upper end) of the angle knob mounting shaft 60 via a pressing member 65 .
  • the angle knob lock member 70 is attached to the angle knob mounting shaft 60 by passing through a through hole 67 formed in the center of the pressing member 65 and being engaged with the tip (upper end) of the angle knob mounting shaft 60 .
  • the holding member 65 arranged below the angle knob lock member 70 and the second angle holding member 65 arranged below the holding member 65 are mounted.
  • the upward movement of the knob 52 is restricted.
  • the upward movement of the first angle knob 51 arranged below the second angle knob 52 is also restricted.
  • the angle knob block member 70 has a vertically long shaft portion 71, and a flange 72 having a non-circular cross section perpendicular to the shaft portion 71 at the tip (lower end) of the shaft portion 71. is provided.
  • the tip (upper end) of the angle knob mounting shaft 60 is formed in the same shape as the flange 72, and the angle knob lock member 70 rotates around the shaft portion 71 at a specific rotation angle (rotation angle shown in FIG. 3).
  • An opening 75 is provided through which the flange 72 can pass at one time. By doing so, the angle knob lock member 70 is rotated around the shaft portion 71 after the flange 72 is passed through the opening 75 with the angle knob lock member 70 at a specific rotation angle. engages with the opening 75 (the tip of the angle knob mounting shaft 60) (the angle knob lock member 70 is mounted on the angle knob mounting shaft 60).
  • the first and second angle knobs 51 and 52 can be easily prevented from coming off simply by passing the flange 72 through the opening 75 and then rotating the angle knob lock member 70 (first , the mounting of the second angle knobs 51 and 52 is completed). Further, in the endoscope 10, the first and second angle knobs 51 and 52 can be easily removed simply by rotating the angle knob lock member 70 to a specific rotation angle and removing it.
  • a support groove 77 for supporting a flange 72 passing through the opening 75 is provided at the back of the opening 75 (on the base end side (lower side) of the angle knob mounting shaft 60). formed.
  • the angle knob lock member 70 (flange 72 ) is supported from above and below by the support groove 77 so as to be rotatable about the shaft portion 71 .
  • the angle knob lock member 70 rotates by a large amount. Indeed, the width (length in the vertical direction) of the support groove 77 is formed narrow. Specifically, when the angle knob lock member 70 is at a specific rotation angle, the width of the support groove 77 of the portion that supports the flange 72 is "W1", and the angle knob lock member 70 is rotated from the specific rotation angle to the shaft portion 71 by "W1".
  • the support groove 77 of the portion supporting the flange 72 in a state of being rotated 90 degrees around is defined as "W2", "W1>W2".
  • the support groove 77 is formed such that the width gradually decreases from the position of the width "W1" toward the position of the width "W2".
  • the angle knob lock member 70 is rotated from a specific rotation angle, the more the frictional force between the flange 72 and the support groove 77 is improved, and the angle knob lock member 70 (flange 72) becomes more stable.
  • the force required for rotation increases. That is, the more the angle knob lock member 70 is rotated, the more firmly the angle knob lock member 70 can be engaged with the angle knob mounting shaft 60 . This contributes to preventing problems such as the angle knob lock member 70 falling off during use of the endoscope 10 .
  • the angle knob block member 70 is provided with the flange 72, and the angle knob mounting shaft 60 is provided with the opening 75 through which the flange 72 passes. It is good also as an opposite structure.
  • the same reference numerals are given to the same members as in the above-described embodiment, and the description thereof is omitted.
  • the angle knob mounting shaft 60 is provided with a flange 72A having the same function as the flange 72 described above.
  • the angle knob lock member 70A has a rod-shaped shaft portion 71A, and an opening 75A having the same function as the opening 75 described above is provided at the lower end portion of the shaft portion 71A. Further, the angle knob lock member 70A is provided with a support groove 77A having the same function as the support groove 77 described above at the back of the opening 75A (inside the shaft portion 71A).
  • the aforementioned pressing member 65 (see FIG. 2) is eliminated, and the angle knob lock member 70A is attached to the angle knob mounting shaft 60, thereby preventing the second angle knob 52 from coming off. It is configured.
  • the pressing ring 52R is formed integrally with the second angle knob 52, and when the angle knob lock member 70A is attached to the angle knob mounting shaft 60, the angle knob lock member By disposing the lower end of 70A above the pressing ring 52R, the second angle knob 52 is prevented from coming off (upward movement is restricted).
  • the angle knob lock member 70A when the angle knob lock member 70A is attached to the angle knob mounting shaft 60, the angle knob lock member 70A is covered from the side. Specifically, as shown in FIGS. 6 and 7, a cylindrical cover 52C is provided on the upper portion 52U of the second angle knob 52, and when the angle knob lock member 70A is attached to the angle knob mounting shaft 60, the angle knob The block member 70A is arranged on the inner periphery of the cover 52C. By doing so, for example, it is possible to prevent the problem that the angle knob lock member 70A is unintentionally touched and the engagement between the angle knob lock member 70A and the angle knob mounting shaft 60 is released.
  • a flexible material such as resin is provided between the angle knob block member 70A and the second angle knob 52 (upper portion 52U of).
  • An O-ring 79 is provided between the angle knob lock member 70A and the second angle knob 52 (the upper portion 52U thereof).
  • the upper portion 52U and the lower portion 52L of the angle knob lock member 70A are screwed together to be integrated, but the upper portion 52U and the lower portion 52L of the angle knob lock member 70A may remain separate. , for example, bonding, or integral molding of the upper portion 52U and the lower portion 52L.
  • the angle knob lock member is engaged with the angle knob mounting shaft 60.
  • the angle knob lock member 80 shown in FIG. 8 the angle knob lock member 90 shown in FIG.
  • it may be configured to engage with the pressing member 65 in addition to the angle knob mounting shaft 60.
  • a flange 72 is formed in the opening 75 at a specific rotation angle, and is engaged with the angle knob mounting shaft 60 by rotating the shaft portion 71 by 90 degrees.
  • An angle knob block member 80 shown in FIG. 8 is provided with an arm portion 81 directed to the side of the shaft portion 71 at the upper portion thereof, and the tip of the arm portion 81 is bent downward and then bent toward the shaft portion 71 side.
  • a crank-shaped engagement projection 82 pointing in the opposite direction is formed.
  • the engaging projection 82 can be inserted into and removed from the pressing member 65 at a specific rotation angle, and the engagement projection 82 can be inserted and removed when the angle knob lock member 80 is rotated from the specific rotation angle.
  • a non-permanently formed engagement opening 83 is formed.
  • the angle knob lock member 90 shown in FIG. On the other hand, the pressing member 65 is engaged with the engaging projection 91 when the angle knob lock member 70 is rotated by a predetermined angle from a specific angle (in the example of FIG. 9, by 90 degrees from a specific angle of rotation).
  • An engagement groove 92 is provided.
  • the engagement protrusion 91 is engaged with the engagement groove 92 . It engages and engages with the pressing member 65, and rotation about the shaft portion 71 is restricted.
  • the angle knob lock member 90A shown in FIG. 10 is provided with a flange 90C between the upper portion 90B and the flange 72. Similar to the flange 72, the flange 90C has a non-circular cross section perpendicular to the shaft portion 71. As shown in FIG. On the other hand, the pressing member 65 is formed with a through hole 67A. Like the opening 75, the through hole 67A is provided so that the flange 72 and the flange 90C can pass therethrough when the angle knob lock member 90A is at a specific rotation angle about the shaft portion 71. As shown in FIG.
  • the angle knob lock member and the pressing member are provided separately. good. Further, instead of integrating the pressing member with the angle knob lock member, the pressing member may be integrated with the angle knob (the second angle knob 52 in the above embodiment).
  • the angle knob lock member 100 of the second embodiment has a projection 101 projecting sideways from the shaft portion 71 at the tip of the shaft portion 71 instead of the flange 72 . Further, in the second embodiment, a cylindrical opening 102 is formed at the tip of the angle knob mounting shaft 60, and a groove 103 is provided on the inner circumference of the opening 102. As shown in FIG. 11,
  • the groove portion 103 is connected to a first groove portion 103a formed toward the base end side (downward) from the tip of the angle knob mounting shaft 60 and the lower end of the first groove portion 103a, and is centered on the angle knob mounting shaft 60 (
  • a horizontal arc-shaped second groove 103b is connected to the second groove 103b on the side opposite to the first groove 103a, and is formed from the proximal side of the angle knob mounting shaft 60 toward the distal side (upward). and a third groove portion 103c.
  • the projection 101 of the angle knob lock member 70 passes through the first groove portion 103a, the second groove portion 103b, and the third groove portion 103c in order, and engages with the end portion of the groove portion 103 (the upper end portion of the third groove portion 103c). By doing so, it is attached to the angle knob mounting shaft 60 . Specifically, the angle knob lock member 70 is moved downward along the first groove portion 103a with the protrusion 101 engaged with the first groove portion 103a, and the shaft portion 71 is moved along the second groove portion 103b. It is attached to the angle knob mounting shaft 60 by rotating it about the center by a predetermined angle (90 degrees in the example of FIG. 11) and then moving it upward along the third groove portion 103c.
  • a predetermined angle 90 degrees in the example of FIG. 11
  • a biasing member such as a spring that biases the angle knob lock member 70 upward is incorporated in the amble knob mounting shaft 60, and the angle knob lock member 70 moves toward the third groove portion 103c due to the bias of this biasing member. It is good also as a structure which moves upward along. Further, as in the angle knob lock member 110 shown in FIG. 12, a biasing member built in the angle knob lock member 110 may move the projection 101 upward along the third groove portion 103c.
  • the angle knob lock member 110 includes a main body 111 in which the upper end portion, the shaft portion 71 and the projection 101 are integrally formed, and a cylindrical body 112 provided on the outer peripheral side of the main body 111.
  • the main body 111 is supported by a cylindrical body 112 so as to be vertically slidable, and the projection 101 protrudes from a projecting opening 113 formed in the cylindrical body 112 and extends along the projecting opening 113 as the main body 111 slides. to move up or down.
  • a biasing member (not shown) that biases the main body 111 upward is built into the cylindrical body 112 .
  • the angle knob lock member 70 moves downward while engaging the projection 101 with the first groove portion 103a, and pushes the main body 111 downward into the cylindrical body 112, whereby the projection 101 moves downward to the first groove portion 103a.
  • the protrusion 101 is rotated to the position of the third groove 103c, the main body 111 (protrusion 101) moves upward due to the biasing force of the biasing member, thereby forming an angle. It engages with the knob mounting shaft 60 .
  • the angle knob mounting shaft 60 is provided with the opening 102 and the groove 103, and the angle knob lock members 100 and 110 are provided with the protrusions 101.
  • the configuration is the opposite. good too. That is, the angle knob lock member may be provided with an opening and a groove, and the angle knob mounting shaft may be provided with a projection.
  • the angle knob lock member 120 of the third embodiment has a shaft portion 71 formed in a cylindrical shape.
  • an outer cylinder 121 that supports the shaft portion 71 from the outer peripheral side and an insertion pin 122 that is inserted into the inner periphery of the shaft portion 71 are formed at the tip (upper end) of the angle knob mounting shaft 60 .
  • the angle knob lock member 120 and the angle knob mounting shaft 60 are pressed downward from the state where the tips of the angle knob lock member 120 and the angle knob mounting shaft 60 face each other, so that the shaft portion 71 becomes the outer cylinder. 121 and an insertion pin 122 are sandwiched from inside and outside. As a result, the angle knob lock member 120 is engaged with the angle knob mounting shaft 60 .
  • the angle knob mounting shaft 60 is provided with the insertion pin 122, and the insertion pin 122 is inserted into the angle knob lock member 120 (shaft portion 71) from below. is not limited to this.
  • the insertion pin may be provided separately from the angle knob mounting shaft 60 and the angle knob lock member 120 and inserted into the angle knob lock member 120 from above.
  • the angle knob lock member 130 of the fourth embodiment is provided with a deployment portion 131 that deploys toward the side of the shaft portion 71 at the tip of the shaft portion 71 .
  • At least a portion of the deployment portion 131 is made of an elastic material.
  • the angle knob lock member 130 elastically deforms the expanded portion 131 downward to pass through the opening 132 provided at the tip of the angle knob mounting shaft 60 .
  • the deployment portion 131 returns to the state before elastic deformation due to the restoring force from the elastic deformation.
  • the deployment portion 131 is deployed inside (at the back) of the opening 132 .
  • the release portion 133 is provided on the angle knob mounting shaft 60 .
  • the release portion 133 is formed of an opening one size smaller than the opening 132 provided at the back (lower side) of the opening 132 .
  • the angle knob lock member 140 of the fifth embodiment is provided with a deployment portion 141 that deploys laterally of the shaft portion 71 at the tip of the shaft portion 71 .
  • At least a portion of the deployment portion 141 is made of an elastic material. When no external force is applied, the deployment portion 141 is deployed to the side of the shaft portion 71 (see FIGS. 18 and 20). elastically deformed over a period of time (see FIGS. 19 and 21).
  • the first-stage elastic deformation is elastic deformation within a range where the claw portion 142 provided at the tip of the deployment portion 141 is positioned outside the holding portion 143 provided on the shaft portion 71 (see FIG. 19). , the deployed portion 141 that has undergone the first stage of elastic deformation returns to the state before elastic deformation (see FIGS. 18 and 20) when the pressure toward the shaft portion 71 is released.
  • the second-stage elastic deformation is elastic deformation in which the claw portion 142 moves over the holding portion 143 provided on the shaft portion 71 and moves to the inside of the holding portion 143 (see FIG. 21).
  • the deformed unfolding portion 141 is held in the vicinity of the shaft portion 71 even after the pressure toward the shaft portion 71 is released by the engagement of the claw portion 142 with the holding portion 143 . In this way, even if the deployment portion 141 is deformed in the first stage, it returns to the deployed state from the shaft portion 71 as the external force is released. is maintained (held in the vicinity of the shaft portion 71) in the unfolded state without returning to the normal position.
  • the angle knob lock member 140 elastically deforms the unfolding portion 141 to the first stage to pass through the opening 144 provided at the tip of the angle knob mounting shaft 60 .
  • the deployment portion 141 returns to the state before elastic deformation (the state in which the deployment portion 141 is deployed) after passing through the opening 144 .
  • the deployment portion 141 deploys inside the opening 144 .
  • the release portion 145 is provided on the angle knob mounting shaft 60 .
  • the release portion 145 is a mortar-shaped opening provided at the back (lower side) of the opening 144, and the angle knob lock member 140 is engaged with the angle knob mounting shaft 60 (the state shown in FIG. 20).
  • the release portion 145 presses the deployment portion 141 toward the shaft portion 71, and the deployment portion 141 is elastically deformed to the second stage.
  • the deployed state of the deployed portion 141 is released, and the angle knob lock member 140 can be removed from the angle knob mounting shaft 60 .
  • the angle knob lock member is provided with a shaft portion and a deployment portion
  • the angle knob mounting shaft is provided with an opening through which the shaft portion is inserted and a releasing portion for releasing the deployment of the deployment portion.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)
PCT/JP2022/004836 2021-03-15 2022-02-08 内視鏡 Ceased WO2022196184A1 (ja)

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JP2023506860A JP7775282B2 (ja) 2021-03-15 2022-02-08 内視鏡
US18/466,826 US20230414079A1 (en) 2021-03-15 2023-09-14 Endoscope

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JP2021-041352 2021-03-15
JP2021041352 2021-03-15

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US18/466,826 Continuation US20230414079A1 (en) 2021-03-15 2023-09-14 Endoscope

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USD1066659S1 (en) * 2021-09-24 2025-03-11 Adaptivendo Llc Endoscope handle

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