WO2023191068A1 - Dispositif médical - Google Patents

Dispositif médical Download PDF

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Publication number
WO2023191068A1
WO2023191068A1 PCT/JP2023/013595 JP2023013595W WO2023191068A1 WO 2023191068 A1 WO2023191068 A1 WO 2023191068A1 JP 2023013595 W JP2023013595 W JP 2023013595W WO 2023191068 A1 WO2023191068 A1 WO 2023191068A1
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WO
WIPO (PCT)
Prior art keywords
inclined surface
fixed
rotation
operating
rotating
Prior art date
Application number
PCT/JP2023/013595
Other languages
English (en)
Japanese (ja)
Inventor
辰也 嶋
Original Assignee
日本ゼオン株式会社
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Filing date
Publication date
Application filed by 日本ゼオン株式会社 filed Critical 日本ゼオン株式会社
Publication of WO2023191068A1 publication Critical patent/WO2023191068A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/008—Articulations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0133—Tip steering devices

Definitions

  • the present invention relates to a medical device that includes an elongated member that is inserted into the body and is capable of deflecting an operated portion provided at its distal end, and particularly relates to a elongated member that is inserted into the body.
  • This invention relates to medical devices such as endoscopes and catheters equipped with
  • medical devices such as endoscopes and catheters are used, which are equipped with elongated members suitable for insertion into the body and passing through body lumens.
  • the elongated member is generally made of a flexible member with a small diameter, and is used for various treatments and examinations by inserting the elongated member into a body lumen from outside the body and allowing its distal end to reach a desired site within the body. It is configured so that it can do the following.
  • a bendable operated part is provided at the distal end of a long member, and a technique is known in which the operated part inserted into the body can be deflected by a practitioner's operation outside the body. ing.
  • Patent Document 1 discloses that a frictional resistance generating member that rotates relatively in order to apply frictional resistance to the rotational movement of a bending operation mechanism has a plurality of radially protruding pawls formed around an annular portion integrally with the frictional resistance generating member.
  • the bending holding mechanism of the endoscope is composed of a radial leaf spring made of a metal plate material with spring properties, and a metal disk having a pressure contact surface that is diagonally pressed against the plate surface of the radial leaf spring.
  • Patent Document 2 discloses that a friction generating member that rotates integrally with the operating lever in the rotary operating section is configured to rotate along the inner circumferential surface of the frame section and come into sliding contact with the outer circumferential surface of the elastic arm section.
  • a rotational position holding mechanism for a rotational operation part is described in which a friction generating member receives a larger elastic force from an elastic arm when it moves in a predetermined direction, thereby increasing the frictional force between the two. ing.
  • Patent No. 4928969 Japanese Patent Application Publication No. 2011-50643
  • Patent Document 1 restricts the rotation by operating the operation knob toward the lock side, and the operator is required to perform complicated operations to restrict the rotation.
  • Patent Document 2 continuously increases the holding force in accordance with the amount of rotation of the operating lever, but it is necessary to provide an elastic arm with a special shape. Since it has a complicated structure, there is a problem in that it requires time and cost to manufacture.
  • the present invention has been made in view of the above problems, and aims to provide a medical device with a simple and compact configuration and excellent operability and convenience.
  • a medical device includes an elongated member in which a bendable operated portion is disposed on a distal end side, and a medical device connected to a proximal end side of the elongated member.
  • a medical device comprising an operating mechanism and an operating wire attached to the elongated member and interposed between the operated section and the operating mechanism so as to be able to transmit an operation
  • the operating mechanism is a grippable fixing member connected to the elongated member; a rotation operation member rotatably arranged with respect to the fixed member; an operation transmission member that generates tension in the operation wire according to rotation of the rotation operation member; a fixed inclined surface part that forms an inclined surface extending all around the circumference along a predetermined conical surface centered on the rotation axis of the rotation operation member, and is fixed relatively to the fixed member; a rotating inclined surface portion that forms an inclined surface extending along the entire circumference along the predetermined conical surface, is fixed relatively to the rotating operating member and rotates with the rotation of the rotating operating member; has The inclined surface of the rotating inclined surface section is in frictional contact with the inclined surface of the fixed inclined surface section over the entire circumference, and slides while being in frictional contact with the inclined surface of the fixed inclined surface section in accordance with the rotation of the
  • the inclined surfaces of the rotary inclined surface part that rotate with the rotation of the operating member extend along the entire circumference along a predetermined conical surface centered on the rotational axis of the rotating operating member, and are in frictional contact over the entire circumference.
  • the fixing member includes a case in which openings are formed on opposing sides along the axial direction of the operating wire
  • the rotation operation member has an operation arm portion that protrudes to the side of the case
  • the operation transmission member includes a slide main body connected to a proximal end of the operation wire and movable in the axial direction of the operation wire within the case, and a side projecting laterally of the case through the opening.
  • the slide main body portion moves in the axial direction of the operating wire to move the operating wire in the axial direction
  • the inclined surface of the rotating inclined surface portion provided on the rotating member that is connected to the rotating operating member and rotates together with the rotating operating member is entirely flush with the inclined surface of the fixed inclined surface portion provided on the case. Frictional contact may be made over the circumference.
  • the slide member can be displaced and the operated portion disposed on the distal end side of the elongated member can be deflected.
  • the rotation of the rotation operation knob that receives the tension of the operation wire via the operation transmission member is transmitted between the slope of the fixed slope provided on the case and the rotation provided on the rotation member. This is limited by the frictional contact of the inclined surface portion with the inclined surface, so that even when the operator releases his or her hand from the rotating operation member, the direction of deflection of the operated portion remains unchanged.
  • the fixing member includes a fixing operation member having a first protrusion and a second protrusion, and a grippable frame part,
  • the rotation operation member is attached to the fixed operation member so as to rotate by a predetermined angle in a first direction and a second direction opposite to the first direction, and is centered on the rotation center.
  • An arc-shaped groove is formed that is substantially arc-shaped and has a first end and a second end
  • the operation transmission member includes a first movable member connected to the first operation wire and a second movable member connected to the second operation wire,
  • the first movable member is slidably fitted loosely into the arcuate groove of the rotation operation member on a side closer to the first end, and when the rotation operation member is rotated in the first direction.
  • the second movable member is slidably fitted loosely into the arcuate groove of the rotation operation member on a side closer to the second end, and when the rotation operation member is rotated in the second direction.
  • the inclined surface of the rotating inclined surface portion provided on the rotating operation member may be in frictional contact with the inclined surface of the fixed inclined surface portion provided on the frame portion over the entire circumference.
  • the first movable member and the second movable member are slidable independently of each other, so that the first and second operating wires can be operated, and the distal part of the elongated member can be moved with a compact configuration.
  • the operated portion disposed on the end side can be deflected. Since deformation due to slack does not occur in the first and second operating wires, damage to the first and second operating wires can be suppressed, and deterioration in operability caused by loosening of the first and second operating wires is prevented. be able to.
  • the rotation of the rotation operation member that receives the tension of at least one of the operation wires via the first movable member and the second movable member is caused by the slope of the fixed slope provided in the frame portion.
  • the deflection direction of the operated part is limited by frictional contact with the inclined surface of the rotating inclined surface part provided on the rotating operating member, and even if the operator releases his/her hand from the rotating operating member, the deflection direction of the operated part changes. It will now be maintained.
  • the fixed inclined surface portion is continuous with the inclined surface of the fixed inclined surface portion, and extends all around the rotation axis of the rotation operation member.
  • a cylindrical surface is formed,
  • the rotating inclined surface portion is formed with a cylindrical surface that is continuous with the inclined surface of the rotating inclined surface portion and extends all around the rotation axis of the rotating operation member,
  • the cylindrical surface of the rotating inclined surface portion may be in contact with the cylindrical surface of the fixed inclined surface portion over the entire circumference.
  • the cylindrical surface of the rotating inclined surface portion contacts the cylindrical surface of the fixed inclined surface portion over the entire circumference, so that the cylindrical surface of the rotating inclined surface portion contacts the cylindrical surface of the fixed inclined surface portion that is formed continuously with these cylindrical surfaces.
  • Reliably and stably frictional contact can be made between the inclined surface of the dynamic inclined surface portion and the entire circumference.
  • the medical device includes an elongated member in which a bendable operated portion is disposed on a distal end side, and a medical device connected to a proximal end side of the elongated member.
  • the operating mechanism is a grippable fixing member connected to the elongated member; first and second rotation operation members rotatably arranged with respect to the fixed member; a first operation transmission member that generates tension in at least one of the first and second operation wires in response to rotation of the first rotation operation member; a second operation transmission member that generates tension in at least one of the third and fourth operation wires in response to rotation of the second rotation operation member; a first inclined surface extending all around the circumference along a predetermined first conical surface centered on the rotational axis of the first rotational operation member, and a first inclined surface that is relatively fixed to the fixed member; a fixed inclined surface part; A second inclined surface is formed
  • a first rotating inclined surface portion that moves;
  • a third inclined surface is formed that extends over the entire circumference along a predetermined second conical surface centered on the rotational axis of the second rotational operation member, and the second rotational operation member is relatively fixed to the fixed member.
  • a fourth inclined surface is formed extending along the entire circumference along the predetermined second conical surface, and is fixed relatively to the second rotation operation member and rotates with rotation of the second rotation operation member.
  • a second rotating inclined surface portion that moves; has The second inclined surface of the first rotating inclined surface section is in frictional contact with the first inclined surface of the first fixed inclined surface section over the entire circumference, and the second inclined surface of the first rotating inclined surface section is in frictional contact with the first inclined surface of the first fixed inclined surface section, and the second inclined surface of the first rotating inclined surface section is in frictional contact with the first inclined surface of the first fixed inclined surface section.
  • the first rotation operation member slides while being in frictional contact with the first slope of the slope portion and receives the tension of at least one of the operation wires via the first operation transmission member.
  • the fourth inclined surface of the second rotating inclined surface section is in frictional contact with the third inclined surface of the second fixed inclined surface section over the entire circumference, and the fourth inclined surface of the second rotating inclined surface section is in frictional contact with the third inclined surface of the second fixed inclined surface section, and the fourth inclined surface of the second rotating inclined surface section is in frictional contact with the third inclined surface of the second fixed inclined surface section.
  • the rotation of the second rotation operation member that slides while being in frictional contact with the third slope of the slope portion and receives the tension of the at least one operation wire via the second operation transmission member is controlled by the second rotation operation member.
  • the fixed slope portion is limited by frictional contact with the third slope surface.
  • the first inclined surface of the first fixed inclined surface section provided on the grippable fixed member and the second inclined surface of the first rotating inclined surface section that rotates with the rotation of the first rotation operation member extend along the entire circumference along a predetermined first conical surface centered on the rotation axis of the first rotation operation member, and are in frictional contact over the entire circumference, thereby transmitting the operation via the first operation transmission member.
  • the rotation of the first rotary operation member under the tension of at least one of the operation wires is limited by frictional contact between the inclined surfaces, even when the operator releases his/her hand from the first rotation operation member. , the deflection direction of the operated part is maintained unchanged.
  • the third slope of the second fixed slope provided on the grippable fixed member and the fourth slope of the second rotation slope that rotates with the rotation of the second rotation operation member are also provided.
  • the surfaces extend along the entire circumference of the second rotation operation member along a predetermined second conical surface centered on the rotation axis of the second rotation operation member, and are in frictional contact over the entire circumference.
  • the rotation of the second rotating operating member under the tension of at least one of the operating wires is limited by frictional contact between the inclined surfaces, even when the operator releases his hand from the first rotating operating member. , the deflection direction of the operated part is maintained unchanged.
  • the fixing member includes a first fixing operation member having a first protrusion and a second protrusion, and a second fixing operation member having a third protrusion and a fourth protrusion.
  • the first rotation operation member is attached to the first fixed operation member so as to rotate by a predetermined angle in a first direction and a second direction opposite to the first direction, and the rotation center
  • An arcuate groove having a first end and a second end is formed in a substantially arc shape with the center at .
  • the first operation transmission member includes a first movable member connected to the first operation wire and a second movable member connected to the second operation wire,
  • the first movable member is slidably fitted loosely into the arcuate groove of the first rotation operation member on a side closer to the first end, and rotates the first rotation operation member in the first direction.
  • the first end portion When moved, the first end portion contacts and rotates according to the rotation of the first rotation operation member; A proximal end of the first operating wire is connected to the first movable member so that the first operating wire is pulled when the first movable member is rotated in the first direction,
  • the first rotation operation member When the first rotation operation member is rotated in the second direction, the first movable member is rotated in the second direction by the tensile force of the first operation wire and rotates in the first direction. It stops when it comes into contact with a protrusion,
  • the second movable member is slidably fitted loosely into the arcuate groove of the first rotation operation member on a side closer to the second end, and rotates the first rotation operation member in the second direction.
  • the second end portion When moved, the second end portion contacts and rotates according to the rotation of the first rotation operation member; A proximal end of the second operating wire is connected to the second movable member so that the second operating wire is pulled when the second movable member is rotated in the second direction, When the first rotation operation member is rotated in the first direction, the second movable member is rotated in the first direction by the tensile force of the second operation wire and rotates in the second direction.
  • the second rotation operation member is attached to the second fixed operation member so as to rotate by a predetermined angle in a third direction and a fourth direction opposite to the third direction, and the rotation center
  • An arc-shaped groove having a third end portion and a fourth end portion is formed in a substantially arc shape having a center at .
  • the second operation transmission member includes a third movable member connected to the third operation wire and a fourth movable member connected to the fourth operation wire, The third movable member is slidably fitted loosely into the arcuate groove of the second rotation operation member on a side closer to the third end, and rotates the second rotation operation member in the third direction.
  • the third end portion When moved, the third end portion contacts and rotates according to the rotation of the second rotation operation member; A proximal end of the third operating wire is connected to the third movable member so that the third operating wire is pulled when the third movable member is rotated in the third direction,
  • the second rotation operation member is rotated in the fourth direction
  • the third movable member is rotated in the fourth direction by the tensile force of the third operation wire, and the third movable member rotates in the fourth direction. It stops when it comes into contact with a protrusion,
  • the fourth movable member is slidably fitted loosely into the arcuate groove of the second rotation operation member on a side closer to the fourth end, and rotates the second rotation operation member in the fourth direction.
  • the fourth end When moved, the fourth end comes into contact and rotates according to the rotation of the second rotation operation member, A proximal end of the fourth operating wire is connected to the fourth movable member so that the fourth operating wire is pulled when the fourth movable member is rotated in the fourth direction,
  • the fourth movable member When the second rotation operation member is rotated in the third direction, the fourth movable member is rotated in the fourth direction by the tensile force of the fourth operation wire and rotates in the fourth direction. It is configured to stop when it comes into contact with a protrusion,
  • the second inclined surface of the first rotating inclined surface portion provided on the first rotating operating member is the second inclined surface of the first rotating inclined surface portion provided on the first rotating operating member.
  • the fourth inclined surface of the second rotational inclined surface section provided on the second rotational operation member is the fourth inclined surface provided on a member fixed to the frame section when the second rotational operation member is rotated. It may be in frictional contact with the third inclined surface of the second fixed inclined surface portion over the entire circumference.
  • the first movable member and the second movable member are slidable independently of each other, so that the first and second operating wires can be operated, and the distal part of the elongated member can be moved with a compact configuration.
  • the operated portion disposed on the end side can be deflected.
  • the third movable member and the fourth movable member similarly operate the third and fourth operation wires to deflect the operated portion arranged on the distal end side of the elongated member with a compact configuration. be able to. This allows deflection operations in four directions, including two-way deflection operations using the first and second operation wires and two-direction deflection operations using the third and fourth operation wires.
  • the rotation of the first rotation operating member that receives the tension of at least one of the operating wires via the first movable member and the second movable member is controlled by the 1 slope and the second slope of the first rotation operation member provided on the first rotation operation member, and when the operator releases his/her hand from the first rotation operation member. Even if there is a deflection direction, the deflection direction of the operated section is maintained unchanged.
  • the rotation of the second rotation operation member that receives the tension of at least one of the operation wires via the third movable member and the fourth movable member is controlled by the second fixed inclined surface provided in the frame portion. and the fourth inclined surface of the second rotational operation member provided on the second rotational operation member, and when the operator releases the second rotational operation member. In this case, the direction of deflection of the operated section remains unchanged.
  • the first and second rotation operation members sandwich the frame portion such that rotation axes of the first and second rotation operation members coincide. are spaced apart on both sides,
  • the second inclined surface of the first rotating inclined surface section provided on the first rotating operation member is in frictional contact with the first inclined surface of the first fixed inclined surface section provided on the frame section over the entire circumference.
  • a fourth inclined surface of the second rotating inclined surface section provided on the second rotating operation member is in frictional contact with a third inclined surface of the second fixed inclined surface section provided on the frame section over the entire circumference. It's okay.
  • the deflection operation of the operated section can be performed by rotating the first and second rotation operation members arranged on both sides of the frame section.
  • a first handle portion is connected to the second rotation operation member, and a second handle portion is connected to the first rotation operation member,
  • the first and second handle portions are arranged adjacent to one side of the frame portion such that rotation axes of the first and second handle portions coincide
  • a second inclined surface of the first rotating inclined surface section provided on the first rotating operation member that is connected to the second handle section and rotates together with the second handle section is provided on the frame section. in frictional contact with the first inclined surface of the first fixed inclined surface portion over the entire circumference;
  • a fourth inclined surface of the second rotating inclined surface section provided on the second rotating operation member that is connected to the first handle section and rotates together with the first handle section is provided on the frame section.
  • the second fixed inclined surface portion may be in frictional contact with the third inclined surface over the entire circumference.
  • the operated part Deflection operations can be performed.
  • the first fixed inclined surface part is continuous with the first inclined surface of the first fixed inclined surface part, and the first fixed inclined surface part is configured to rotate the first rotation operation member.
  • a first cylindrical surface is formed that extends around the entire circumference around the axis
  • the first rotating inclined surface section has a second inclined surface that is continuous with the second inclined surface of the first rotating inclined surface section and extends all around the rotation axis of the first rotating operation member.
  • a cylindrical surface is formed,
  • the second fixed inclined surface section includes a third cylindrical surface that is continuous with the third inclined surface of the second fixed inclined surface section and extends all around the rotation axis of the second rotation operation member.
  • the second rotating inclined surface section has a fourth inclined surface that is continuous with the fourth inclined surface of the second rotating inclined surface section and extends all around the rotation axis of the second rotating operation member.
  • a cylindrical surface is formed, The second cylindrical surface of the first rotating inclined surface portion contacts the first cylindrical surface of the first fixed inclined surface portion over the entire circumference, and the fourth cylindrical surface of the second rotating inclined surface portion contacts the first cylindrical surface of the first fixed inclined surface portion.
  • the third cylindrical surface of the inclined surface portion may be in contact with the entire circumference.
  • the second cylindrical surface of the first rotating inclined surface part contacts the first cylindrical surface of the first fixed inclined surface part over the entire circumference, so that the second cylindrical surface is formed continuously with these cylindrical surfaces.
  • the first inclined surface of the first fixed inclined surface section and the second inclined surface of the first rotary inclined surface section can be in frictional contact reliably and stably over the entire circumference.
  • the fourth cylindrical surface of the second rotating inclined surface section contacts the third cylindrical surface of the second fixed inclined surface section over the entire circumference, so that the second fixed inclined surface section is formed continuously with these cylindrical surfaces.
  • the third inclined surface of the second rotary inclined surface portion and the fourth inclined surface of the second rotating inclined surface portion can be brought into reliable and stable frictional contact over the entire circumference.
  • FIG. 1 is a schematic configuration diagram showing an endoscope that is an example of a medical device in this embodiment.
  • FIG. 2 is a partial enlarged view of the distal end side of the tubular member in the endoscope shown in FIG. 1, and is a diagram showing a state in which the operated portion is straightly extended without being bent.
  • FIG. 2 is a partially enlarged view of the distal end side of the tubular member in the endoscope shown in FIG. 1, and is a diagram showing a state in which the operated portion is bent in one direction within the plane.
  • FIG. 2 is a partially enlarged view of the distal end side of the tubular member in the endoscope shown in FIG. 1, showing a state in which the operated section is most bent in one direction within the plane.
  • FIG. 1 is a schematic configuration diagram showing an endoscope that is an example of a medical device in this embodiment.
  • FIG. 2 is a partial enlarged view of the distal end side of the tubular member in the endoscope shown in FIG. 1, and is
  • FIG. 2 is a partially enlarged view of the distal end side of the tubular member in the endoscope shown in FIG. 1, and is a diagram showing a state in which the operated portion is bent in the other direction within the plane.
  • FIG. 2 is a partially enlarged view of the distal end side of the tubular member in the endoscope shown in FIG. 1, and is a diagram showing a state in which the operated portion is most bent in the other direction within the plane.
  • FIG. 3 is a perspective view of the operating mechanism according to the first embodiment of the present invention, viewed from above.
  • FIG. 3 is a perspective view of the operating mechanism according to the first embodiment of the present invention, viewed from below.
  • FIG. 3 is a plan view of the operating mechanism in the first embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of the operating mechanism according to the first embodiment of the present invention, viewed from above.
  • FIG. 2 is an exploded perspective view of the operating mechanism according to the first embodiment of the present invention, viewed from below.
  • FIG. 3 is a partially transparent plan view of the operating mechanism according to the first embodiment of the present invention, showing a state in which the handle portions of the rotary operating knob are in symmetrical positions.
  • FIG. 3 is a partially transparent plan view of the operating mechanism according to the first embodiment of the present invention, showing a state in which the handle portion of the rotating operating knob is rotated in one direction.
  • FIG. 7 is a partially transparent plan view of the operating mechanism in the first embodiment of the present invention, and is a diagram showing a state in which the handle portion of the rotating operating knob is rotated in the other direction.
  • FIG. 3 is a side sectional view of the operating mechanism in the first embodiment of the present invention, and is a side sectional view of the entire operating mechanism.
  • FIG. 3 is a side sectional view of the operating mechanism in the first embodiment of the present invention, and is an enlarged sectional view of the vicinity of the rotation axis.
  • FIG. 7 is a perspective view of the operating mechanism according to the second embodiment of the present invention viewed from one direction. It is a perspective view of the operation mechanism in a 2nd embodiment of the present invention seen from the other direction.
  • FIG. 3 is a side sectional view of the operating mechanism in the first embodiment of the present invention, and is a side sectional view of the entire operating mechanism.
  • FIG. 3 is a side sectional view of the operating mechanism in the first embodiment of the present invention, and is an
  • FIG. 7 is an exploded perspective view of the operating mechanism according to the second embodiment of the present invention, viewed from one direction. It is an exploded perspective view of the operation mechanism in a 2nd embodiment of the present invention seen from the other direction.
  • FIG. 7 is a front view for explaining the operation of the operating mechanism in the second embodiment of the present invention, and is a diagram showing a state in which the arcuate grooves of the rotation operating member are set to be symmetrical.
  • FIG. 7 is a front view for explaining the operation of the operating mechanism in the second embodiment of the present invention, and is a diagram showing a state in which the rotating operating member is rotated in the first direction.
  • FIG. 7 is a front view for explaining the operation of the operating mechanism in the second embodiment of the present invention, and is a diagram showing a state in which the rotating operating member is rotated in the second direction.
  • FIG. 7 is an enlarged sectional view of the vicinity of the rotation axis of the operating mechanism according to the second embodiment of the present invention.
  • FIG. 7 is a perspective view of an operating mechanism according to a third embodiment of the present invention viewed from one direction. It is a perspective view of the operation mechanism in a 3rd embodiment of the present invention seen from the other direction.
  • FIG. 7 is an exploded perspective view of the operating mechanism according to the third embodiment of the present invention, viewed from one direction. It is an exploded perspective view of the operation mechanism in a 3rd embodiment of the present invention seen from the other direction.
  • FIG. 7 is a front view for explaining the operation of the operating mechanism in the third embodiment of the present invention, and is a diagram showing a state in which the arcuate grooves of the rotation operating member are set to be symmetrical.
  • FIG. 7 is a front view for explaining the operation of the operating mechanism in the third embodiment of the present invention, and is a diagram showing a state in which the rotating operating member is rotated in the first direction.
  • FIG. 7 is a front view for explaining the operation of the operating mechanism in the third embodiment of the present invention, and is a diagram showing a state in which the rotating operating member is rotated in the second direction.
  • FIG. 7 is an enlarged sectional view of the vicinity of the rotation axis of the operating mechanism according to the third embodiment of the present invention.
  • FIG. 7 is an enlarged cross-sectional view of the vicinity of the operating section of the operating mechanism according to the fourth embodiment of the present invention. It is a perspective view of the operation mechanism in a 5th embodiment of the present invention seen from one direction. It is a perspective view of the operation mechanism in a 5th embodiment of the present invention seen from the other direction.
  • FIG. 7 is an enlarged cross-sectional view of the vicinity of the operating section of the operating mechanism according to the fifth embodiment of the present invention.
  • 1 is a diagram schematically showing the concept of the present invention, and is a schematic diagram showing the basic concept of the present invention.
  • FIG. 1 is a diagram schematically showing the concept of the present invention, and is a schematic diagram showing the basic concept of the present invention.
  • FIG. 1 is a diagram schematically showing the concept of the present invention, and is a schematic diagram showing the basic concept of the present invention.
  • FIG. 2 is a diagram schematically illustrating the concept of the present invention, and is a schematic diagram illustrating a first example in which an inclined surface and a cylindrical surface are formed on each of a fixed inclined surface section and a rotating inclined surface section. It is a figure which shows the concept of this invention typically, and is a schematic diagram which shows the 2nd example which formed the inclined surface and cylindrical surface in the fixed inclined surface part and the rotating inclined surface part, respectively.
  • a medical device is an endoscope, a catheter, or the like that includes an elongated member, and is configured so that a user can deflect the operated portion disposed on the distal end side of the elongated member. It is constructed.
  • a configuration in which the present invention is applied to an endoscope equipped with a tubular member having a lumen as an elongated member will be described as an example.
  • the present invention is not limited to the configuration, and can be applied to any medical device that deflectably operates the operated portion disposed on the distal end side of the elongated member.
  • FIG. 1 is a schematic configuration diagram showing an endoscope 1, which is an example of a medical device in this embodiment.
  • FIG. 1 shows a schematic configuration of an endoscope 1.
  • the endoscope 1 shown in FIG. 1 includes a long tubular member (long member) 2 that constitutes a shaft of the endoscope 1, and an operating mechanism 10 for a user to operate.
  • a controller equipped with an imaging system that receives a video signal from an image sensor disposed at the distal end 2c of the tubular member 2 and outputs an image on a monitor, and a suction system that aspirates body fluids, etc.
  • the operating mechanism 10 Although it is possible to connect various devices to the operating mechanism 10, such as a pump and an irrigation water control pump for supplying and suctioning irrigation water such as physiological saline or a medical solution, they are not shown in FIG.
  • the present invention does not particularly limit the manner of connection between these various devices and the operating mechanism 10.
  • the tubular member 2 is a long, thin, flexible tube that constitutes the shaft of the endoscope 1 that is inserted into the body lumen from outside the body.
  • the tubular member 2 can be inserted into the body lumen from outside the body, and the distal end 2c of the tubular member 2 can reach a desired site inside the body. It looks like this.
  • the tubular member 2 has a tubular structure in which one or more internal cavities (lumens or channels) are formed along its extending direction.
  • an image sensor, a light output section, etc. are disposed at the distal end 2c of the tubular member 2, and the inner cavity of the tubular member 2 includes wiring for transmitting a video signal from the image sensor and light to the light output section.
  • a transmission optical fiber or the like is inserted through it, and the operation can be controlled by various devices connected to the operating mechanism 10. Furthermore, even if it is possible to insert endoscopic treatment instruments such as forceps and snares into the inner cavity of the tubular member 2, and to allow fluids such as irrigation water, body fluids, and contrast media to flow therethrough. good.
  • an operated section 2a which is a movable section that can be bent and operated by the user using the operating mechanism 10.
  • bending in this specification includes a curvature such as an arch.
  • Operation wire rods (operation wire rods 3, 4, 5, and 6, which will be described later) are inserted into the inside of the tubular member 2.
  • the operating wire is a member interposed between the operated portion 2a and the operating mechanism 10 so as to be able to transmit an operation.
  • a wire made of a metal (such as stainless steel) that has enough flexibility to curve following the curve of the tubular member 2 including the operated portion 2a can be used.
  • the operating wire rod can bend the operated portion 2a by moving toward the proximal end in the axial direction by operating the operating mechanism 10.
  • the operating wire may be one that has rigidity in the axial direction and has pushability to transmit force from the proximal end side to the distal end side.
  • the tubular member 2 is preferably set to a size suitable for internal treatment, examination, etc., and is not particularly limited, but for example, the cross-sectional radial dimension is about 2 to 20 mm, and the axial dimension is about 20 to 300 cm. can do. Further, the range of the operated part 2a can be set as appropriate depending on the target area of treatment or examination in the body, and is not particularly limited, but may be, for example, a range of about 2 to 10 cm from the distal end 2c of the tubular member 2. be able to.
  • the material of the tubular member 2 is preferably a material that gives flexibility to the tubular member 2 and is not harmful to the human body, and is not particularly limited. It may also be a compatible polymeric material. Further, the operated portion 2a and the intermediate portion 2b (the tubular member 2 on the proximal end side of the operated portion 2a) may be made of the same material.
  • the operated portion 2a disposed on the distal end side of the tubular member 2 has higher flexibility than the intermediate portion 2b of the tubular member 2. It is preferable that the intermediate portion 2b of the tubular member 2 can be flexibly deformed to fit the body lumen, while the operated portion 2a is preferably able to be flexibly deflected by operation by the user. In particular, when the user performs an operation using the operation mechanism 10, the intermediate portion 2b of the tubular member 2 does not bend in conjunction with the operation mechanism 10, and the Preferably, only the portion 2a can be deflected in conjunction with each other.
  • An operating mechanism 10 is connected to the proximal end side of the tubular member 2.
  • the operating mechanism 10 includes a case (housing) 11 that is placed outside the body when the user performs internal treatment or examination, and can be held by the user's hand.
  • the user can operate the rotating operation member 12 provided in the operation mechanism 10 while holding the case 11 with one hand.
  • the operating mechanism 10 is capable of moving the operating wire in the axial direction in accordance with the rotation of the rotating operating member 12, thereby deflecting the operated portion 2a in a predetermined direction. .
  • the case 11 has a shape and size that can be held by a user.
  • the material of the case 11 is not particularly limited, it is preferably a lightweight and durable material, and may be a polymeric material such as polyethylene, polycarbonate, polyacetal, ABS, or PET.
  • the operating mechanism 10 is not particularly limited, it may be capable of being connected to various devices not shown.
  • the operating mechanism 10 includes, for example, a forceps channel port, various ports such as a Y-shaped adapter for simultaneously supplying and suctioning irrigation water (forceps channel port, suction port, water supply port, etc.), and a controller equipped with an imaging system. It may also be equipped with a cable connector etc. that can be connected to.
  • Various ports, connectors, etc. of the operating mechanism 10 communicate with the inner cavity of the tubular member 2 connected to the operating mechanism 10, and the distal end 2c of the tubular member 2 is placed inside the body to perform appropriate treatment as appropriate. It is now possible to do so.
  • FIGS. 2A, 2B, 2C, 2D, and 2E are partially enlarged views of the distal end side of the tubular member 2 in the endoscope 1 shown in FIG. 1.
  • 2A is a diagram showing a state in which the operated part 2a is straight without bending
  • FIG. 2B is a diagram showing a state in which the operated part 2a is bent in one direction within the plane
  • FIG. 2C is a diagram showing the operated part 2a in a straight direction.
  • FIG. 2D is a diagram showing a state in which the operated part 2a is bent most in one direction within the plane
  • FIG. 2D is a diagram showing a state in which the operated part 2a is bent in the other direction in the plane
  • FIG. 2E is a diagram showing a state in which the operated part 2a is bent most in the other direction in the plane.
  • two operating wires 3 and 4 are inserted into the tubular member 2, and one of the two operating wires 3 and 4 is inserted into the tubular member 2.
  • a portion or the entirety thereof is fixed to the operated portion 2a of the tubular member 2.
  • the two operating wires 3 and 4 are fixed at positions facing each other in the cross-sectional radial direction across the central axis of the tubular member 2, and the two operating wires 3 and 4 facing each other are
  • the plane including the axial direction of the operating wires 3 and 4 of the book is illustrated so as to match the plane of the paper.
  • the operated portion 2a When one operating wire 4 is pushed out toward the distal end and the other operating wire 3 is pulled toward the proximal end, the operated portion 2a is located on the side where the operating wire 3 is arranged (lower side in FIG. 2B). ) so that the direction (angle ⁇ shown in FIG. 2B) of the distal end 2c of the tubular member 2 changes.
  • the direction of the distal end 2c of the tubular member 2 is such that it can be bent until the angle ⁇ reaches a maximum of 275°, as shown in FIG. 2C, for example.
  • the two operating wires 3 and 4 are placed around the circumference of the tubular member 2 away from the central axis of the tubular member 2. It is preferable to arrange it near the surface.
  • the two operating wires 3 and 4 are attached to the tubular member 2 by being inserted into the interior (lumen) of the tubular member 2, but the method for attaching the operating wires 3 and 4 to the tubular member 2 is It is not limited to this.
  • the operating wires 3 and 4 may be placed along the outer side of the tubular member 2 and attached by fixing the operating wires 3 and 4 to the distal end side of the tubular member 2.
  • the two operating wire rods 3 and 4 may be composed of one wire rod connected in the vicinity of the operated portion 2a.
  • the middle part of one wire is folded back at the operated part 2a and fixed to the operated part 2a, and extends along the tubular member 2 as two operating wires 3 and 4,
  • the mechanism 10 may be configured to move both ends of the one wire in the axial direction.
  • a configuration may be adopted in which one operating wire is inserted into the inside of the tubular member 2, and the distal end portion of the one operating wire is fixed to the operated portion 2a.
  • the operated portion 2a can be deflected in a predetermined direction.
  • FIG. 3 is a perspective view of the operating mechanism 10A in the first embodiment of the present invention seen from above
  • FIG. 4 is a perspective view of the operating mechanism 10A in the first embodiment of the present invention seen from below
  • FIG. 5 is a plan view of the operating mechanism 10A in the first embodiment of the present invention. 3 to 5 illustrate the assembled state of the operating mechanism 10A.
  • FIG. 6 is an exploded perspective view of the operating mechanism 10A in the first embodiment of the present invention seen from above
  • FIG. 7 is an exploded perspective view of the operating mechanism 10A in the first embodiment of the present invention seen from below. It is a diagram. Note that the operating wires 3 and 4 are not shown in FIGS. 3 to 7.
  • the side where the lid member 40 is placed is referred to as the upper side
  • the side where the rotation operation knob 50 is placed is referred to as the lower side
  • the user should be aware of the upper and lower sides. You can perform the operation without having to
  • the operating mechanism 10A in the first embodiment generally includes an upper case member 20, a lower case member 30, a lid member 40, a rotation operation knob 50, and a pair of slide members 60 and 70.
  • Each member constituting the operating mechanism 10A can be manufactured by molding resin, for example, and the operating mechanism 10A can be assembled by combining these members.
  • the operating mechanism 10A has an elongated shape extending from the proximal end side to the distal end side.
  • the longitudinal direction hereinafter refers to the longitudinal direction of the operating mechanism 10A.
  • the term “lateral” hereinafter refers to a direction from the longitudinal central axis of the operating mechanism 10A toward the outside of the operating mechanism 10A when the operating mechanism 10A is viewed from above (see FIG. 5).
  • the upper case member 20 is a member having an elongated shape along the longitudinal direction.
  • the upper case member 20 and the lower case member 30 are formed so as to overlap each other to form the case 11.
  • an accommodation space is formed between the upper case member 20 and the lower case member 30 (inside the case 11).
  • the sliding members 60, 70, the proximal ends of the two operating wires 3, 4, the substantially central portion of the rotary operating knob 50, and the like are accommodated in the accommodation space.
  • the upper case member 20 in this embodiment has five screw holes 20a for screwing and fixing to the lower case member 30.
  • a lid member support portion 21 is provided at the longitudinal center of the upper case member 20.
  • the lid member support portion 21 is formed into a substantially circular thin flat plate shape.
  • a lid member 40 is arranged on the upper surface of the lid member support portion 21 so as to be rotatable with respect to the upper case member 20 (case 11).
  • a fixed inclined surface portion 24 forming an inclined surface 24 a is provided on the upper surface side of the lid member support portion 21 so as to stand up from the upper surface of the lid member support portion 21 .
  • the inclined surface 24a is a surface inclined along a conical surface having a virtual fixing point (vertex) above, and is centered around the rotation axis of the lid member 40 located at approximately the center of the lid member support portion 21. , are provided around the entire circumference in a substantially circular shape.
  • the inclined surface 24a formed by the fixed inclined surface section 24 is formed to overlap the inclined surface 44a formed by the rotating inclined surface section 44 of the lid member 40.
  • the inclination angle and radial dimension of the inclined surface 24a formed by the fixed inclined surface section 24 are set to be substantially the same as the inclined surface 44a formed by the rotating inclined surface section 44.
  • the lid member 40 is mounted on the upper surface of the lid member support portion 21 so that the slope 44a formed by the rotating slope portion 44 of the lid member 40 and the slope 24a formed by the fixed slope portion 24 of the upper case member 20 overlap. is placed.
  • the lid member 40 rotates with respect to the upper case member 20 while the slope 44a formed by the rotating slope portion 44 of the lid member 40 is in surface contact with the slope 24a formed by the fixed slope portion 24 of the upper case member 20. It is designed to move.
  • the frictional force generated by the surface contact between the inclined surfaces 24a and 44a fixes the relative position of the lid member 40 and the upper case member 20, thereby maintaining the deflection direction of the operated portion 2a. It is now possible to do so.
  • a bottomed rotation shaft member holding hole 21a is formed on the lower surface side of the lid member support portion 21 to rotatably and stably hold the cylindrical rotation shaft member 81.
  • an upper grip assisting part 25 that protrudes laterally is provided at the proximal end of the upper case member 20 at the proximal end of the upper case member 20.
  • a lower grip assisting portion 35 formed in a similar shape is also provided at the proximal end of the lower case member 30.
  • the distal end of the upper case member 20 is provided with an upper sleeve portion 26 that protrudes from the distal end.
  • a semicircular groove 26 a is formed on the lower surface side of the upper sleeve portion 26 from the distal end to the proximal end of the upper sleeve portion 26 .
  • a lower sleeve portion 36 formed in a similar shape is also provided at the distal end of the lower case member 30.
  • a thin tubular sleeve portion 13 is formed by overlapping the upper case member 20 and the lower case member 30. The tubular member 2 is inserted into the sleeve portion 13 and fixed.
  • a pair of upper sliding grooves 22 and 23 are provided on the lower surface side of the upper case member 20 over the entire longitudinal direction of the upper case member 20.
  • a pair of lower sliding grooves 32 and 33 formed in the same shape are also provided on the upper surface side of the lower case member 30, so that the upper case member 20 and the lower case member 30 overlap.
  • a pair of slide member sliding grooves are formed in which the pair of slide members 60 and 70 can be slid, respectively.
  • a pair of curved protrusions 27a and 27b are formed that extend while being curved.
  • a pair of wire insertion grooves 37a, 37b formed in a similar curved shape are provided on the upper surface side of the distal end of the lower case member 30, and a pair of curved protrusions 27a, 27b are provided.
  • the pair of curved protrusions 27a, 27b define a gap large enough to allow the pair of operating wires 3, 4 to be inserted, thereby preventing the swinging of the operating wires 3, 4 inserted into each of the pair of wire insertion holes. This makes it possible to hold the operating wires 3 and 4 stably.
  • the lower case member 30 is a member having an elongated shape along the longitudinal direction.
  • the upper case member 20 and the lower case member 30 are formed so as to overlap each other to form the case 11.
  • an accommodation space is formed between the upper case member 20 and the lower case member 30 (inside the case 11).
  • the lower case member 30 in this embodiment has five screw holes 30a for screwing and fixing to the upper case member 20.
  • a lower grip assisting portion 35 that protrudes laterally is provided at the proximal end of the lower case member 30.
  • an upper grip assisting portion 25 formed in a similar shape is also provided.
  • the approximately T-shaped gripping auxiliary portion 14 is formed by overlapping the upper case member 20 and the lower case member 30.
  • a lower sleeve portion 36 is provided at the distal end of the lower case member 30 and protrudes from the distal end.
  • a semicircular groove 36 a is formed on the upper surface side of the lower sleeve portion 36 from the distal end to the proximal end of the lower sleeve portion 36 .
  • An upper sleeve portion 26 having a similar shape is also provided at the distal end of the upper case member 20.
  • the thin tubular sleeve portion 13 is formed by overlapping the upper case member 20 and the lower case member 30.
  • a rotary operation knob support portion 31 is provided at the longitudinal center of the lower case member 30.
  • the rotation operation knob support portion 31 is formed into a substantially circular thin flat plate shape except for the position where the stepped surface portion 31b constituting the rotation restriction portion is arranged.
  • a rotation operation knob 50 is arranged on the upper surface of the rotation operation knob support section 31 so as to be rotatable with respect to the lower case member 30 (case 11). Further, a bottomed rotation shaft member holding hole 31a is formed on the upper surface side of the rotation operation knob support portion 31 to rotatably and stably hold a cylindrical rotation shaft member 81.
  • the distal and proximal ends of the lower case member 30 from the rotary operation knob support portion 31 are configured to be thicker than the rotary operation knob support portion 31 .
  • a pair of lower sliding grooves 32 and 33 are provided in the thick portion of the upper surface of the lower case member 30.
  • a pair of upper sliding grooves 22 and 23 formed in the same shape are also provided on the upper surface side of the upper case member 20, and when the upper case member 20 and the lower case member 30 overlap, the pair of sliding members
  • a pair of slide member sliding grooves are formed in which the slide body portions 61 and 71 constituting the slide members 60 and 70 can be slid, respectively.
  • the sliding direction of the pair of slide members 60, 70 is regulated by the pair of slide member sliding grooves, and the pair of slide members 60, 70 can slide only in the longitudinal direction.
  • the lower sliding grooves 32 and 33 on the distal end side and the proximal end side are separated by the rotation operation knob support part 31, but the distance between them is equal to the slide body part 61 of the slide members 60 and 70. , 71, and the slide members 60, 70 are slidable over the entire length including the distal end side and the proximal end side. Further, the bottom surfaces of the pair of lower sliding grooves 32 and 33 are arranged at a higher position than the upper surface of the rotation operation knob support part.
  • the slide main bodies 61 and 71 sliding in the slide member sliding grooves pass through a position spaced apart from the upper surface of the rotation operation knob support section 31, and the lower surfaces of the slide members 60 and 70 and the rotation operation knob support section A space is formed between the upper surface of the rotary operation knob 50 and the upper surface of the rotary operation knob 50 .
  • Low step portions 32a and 33a are formed to allow the guide pieces 61a and 71a of 71 to stably slide. Further, when the upper case member 20 and the lower case member 30 overlap, both sides of the case 11 are covered by a portion of the low step portions 32a and 33a (the longitudinal range in which the pair of lateral protrusions 62 and 72 slide). Openings 15a and 15b are formed to extend in the longitudinal direction.
  • a pair of lateral protrusions 62 and 72 are formed integrally with a pair of slide main bodies 61 and 71 that slide in the slide member sliding grooves, respectively, so as to protrude to both sides of the case 11 through openings 15a and 15b. It is located.
  • a pair of lower sliding grooves 32 and 33 are formed from the proximal end of the semicircular groove 36a formed in the lower sleeve part 36, respectively.
  • a pair of curved wire insertion grooves 37a and 37b are formed at the distal end of the wire rod.
  • a pair of curved protrusions 27a and 27b formed into similar curved shapes are provided on the lower surface side of the distal end of the upper case member 20.
  • the pair of curved protrusions 27a and 27b fit into the corresponding pair of wire insertion grooves 37a and 37b so as to create a gap through which the operating wires 3 and 4 can be inserted, so that the pair of wire rods An insertion hole is formed.
  • a stepped surface portion 31b is formed at the boundary between the thick wall portions on the distal end side and the proximal end side and the rotary operation knob support portion 31.
  • This step surface portion 31b constitutes a rotation restriction portion that comes into contact with the operation arm portions 52 and 53 of the rotation operation knob 50.
  • the stepped surface portion 31b is configured such that the rotation range of the rotation operation knob 50 is restricted by the pair of operation arms 52 and 53 coming into contact with each other when the rotation operation knob 50 is rotated.
  • the lower case member 30 has a distal end opened to the sleeve portion 13 and a proximal end opened to the proximal end side of the lower case member 30, extending over the entire length of the lower case member 30.
  • An extending wiring insertion groove 38 is formed.
  • the wiring insertion groove 38 communicates with the distal end 2c of the tubular member 2 through the sleeve portion 13 and the inner cavity of the tubular member 2, and is electrically connected to the endoscope camera provided at the distal end 2c of the tubular member 2.
  • the wiring connected to can be led out to the outside of the operating mechanism 10A.
  • the lid member 40 includes a truncated cone member 41 and a pair of lid arm portions 42 and 43.
  • the lid member 40 is connected to the rotation operation knob 50 and rotates with respect to the case 11 together with the rotation operation knob 50.
  • the operating mechanism 10A in this embodiment is provided with a rotation operation knob 50 for the operator to perform a rotation operation, but the operator cannot use the cover that rotates integrally with the rotation operation knob 50.
  • the member 40 may also be rotated.
  • the lid member 40 constitutes the rotation operation member 12 according to the present invention.
  • the truncated cone member 41 is a truncated cone-shaped member that is hollow inside.
  • the truncated cone member 41 is formed to have a substantially circular disc member disposed on the upper surface side and a surface inclined downward from the side peripheral edge of the disc member, and the hollow interior is located on the lower surface side. It is open to
  • a rotating inclined surface portion 44 is provided that forms an inclined surface 44a on the side peripheral edge.
  • the inclined surface 44a is a surface inclined along a conical surface having a virtual fixing point (apex) above, and is centered around the rotation axis of the lid member 40 located approximately at the center of the truncated conical member 41.
  • the inclined surface 44a formed by the rotating inclined surface section 44 is formed to overlap the inclined surface 24a formed by the fixed inclined surface section 24 of the upper case member 20.
  • the lid member 40 is connected to the upper case member while the inclined surface 44a formed by the rotating inclined surface portion 44 of the lid member 40 is in surface contact with the inclined surface 24a formed by the fixed inclined surface portion 24 of the upper case member 20. It is designed to rotate relative to 20 degrees.
  • the inclination angle and radial dimension of the inclined surface 44a formed by the rotating inclined surface section 44 are set to be substantially the same as those of the inclined surface 24a formed by the fixed inclined surface section 24.
  • a pair of lid arm portions 42 and 43 extending laterally are integrally formed on the side peripheral edge of the truncated conical member 41.
  • the pair of lid arm portions 42 and 43 extend in the radial direction of the substantially central portion of the truncated conical member 41, and are provided at symmetrical positions across the rotation axis.
  • Engagement shaft member fixing portions 42a and 43a capable of fixing engagement shaft members 82 and 83 are formed at the distal end portions of the pair of lid arm portions 42 and 43, respectively.
  • the engagement shaft member fixing portions 42a, 43a are configured by holes formed such that the upper ends of the cylindrical engagement shaft members 82, 83 are fitted and fixed, for example.
  • the rotation operation knob 50 includes a shaft insertion portion 51, a pair of operation arm portions 52 and 53, and a pair of handle portions 54 and 55.
  • the rotation operation knob 50 is connected to the lid member 40 and rotates with respect to the case 11 integrally with the lid member 40.
  • the rotation operation knob 50 constitutes the rotation operation member 12 according to the present invention.
  • the pair of operating arms 52 and 53 are elongated members that extend from a substantially central portion, which is the center of rotation of the rotating operating knob 50, to both sides.
  • the pair of operating arms 52 and 53 are integrally formed so as to be substantially in a straight line, and are connected at substantially the center of the rotary operating knob 50.
  • the pair of operating arms 52 and 53 are thin so as not to interfere with the sliding of the slide members 60 and 70 disposed above them, near the approximate center of the rotating operating knob 50.
  • a shaft member insertion portion 51 having a shape that projects upward is provided approximately at the center of the rotation operation knob 50 .
  • the shaft insertion hole 51a is formed in the shaft insertion portion 51, and extends through the upper and lower surfaces of the rotation operation knob 50 in the vertical direction so that the rotation shaft 81 can be inserted therethrough.
  • a rotating shaft member 81 is inserted through the shaft member insertion portion 51, and the center of the shaft member insertion hole 51a coincides with the rotating shaft.
  • the sidewardly extending distal ends of the pair of operating arms 52 and 53 are thick, and are partially hollowed out to reduce weight.
  • Engagement shaft member fixing portions 52a and 53a capable of fixing engagement shaft members 82 and 83 are formed at the distal ends of the pair of operating arms 52 and 53, respectively.
  • the engagement shaft member fixing portions 52a, 53a are configured with holes formed such that the lower ends of the cylindrical engagement shaft members 82, 83 are fitted and fixed, for example.
  • the tips of the pair of operating arms 52 and 53 are each formed into a curved shape, and constitute handle parts 54 and 55.
  • the pair of handle portions 54 and 55 are members that extend so as to spread along the rotation direction about the rotation axis.
  • the outer side surfaces of the pair of handle portions 54 and 55 are each formed into a wave shape along the extending direction of the handle portions 54 and 55. This allows the user's fingers to easily hang onto the handle portions 54 and 55 when operating the operating mechanism, improving operability.
  • the shapes and sizes of the handle portions 54 and 55 are not particularly limited.
  • the slide member 60 includes a slide main body 61 and a lateral protrusion 62
  • the slide member 70 includes a slide main body 71 and a lateral protrusion 72.
  • the slide main bodies 61 and 71 are substantially rectangular members extending in the longitudinal direction.
  • the slide body parts 61 and 71 are respectively arranged in a pair of slide member sliding grooves formed in the case 11 so as to be slidable in the longitudinal direction.
  • the slide main bodies 61 and 71 have guide pieces 61a and 71a extending in the longitudinal direction on their outer side surfaces, respectively.
  • the guide pieces 61a and 71a are inserted into openings 15a and 15b formed along the longitudinal direction on both sides of the case 11, respectively.
  • the slide main bodies 61 and 71 are supported by the slide member sliding grooves and openings 15a and 15b formed in the case 11, and can be stably reciprocated in the longitudinal direction within the case 11.
  • Grooves 61b and 71b are formed on the upper surfaces of the slide main bodies 61 and 71, respectively, over the entire lengthwise direction. Furthermore, fastening holes 61c and 71c are formed on the side surfaces of the slide main bodies 61 and 71 to allow insertion of a bolt 84a into the grooves 61b and 71b.
  • the proximal ends of the two operating wires 3 and 4 are guided by grooves 61b and 71b formed in the slide body parts 61 and 71, respectively, and inserted into metal tubes 84c arranged in the grooves 61b and 71b, respectively. inserted.
  • the bolt 84a is screwed in and the metal tube 84c is caulked, so that the two operating wires 3, are respectively crimped and fixed inside the metal tube 84c.
  • the two operating wires 3 and 4 can be connected to the corresponding slide members 60 and 70, respectively.
  • the connection between the operating wires 3, 4 and the slide members 60, 70 is not limited to this method, and by reciprocating the slide members 60, 70 in the longitudinal direction, the operating wires 3, 4 also move in the axial direction. Any connection method can be used as long as it moves to .
  • Side protrusions 62 and 72 extending laterally are integrally formed on the respective side surfaces of the slide main bodies 61 and 71, respectively.
  • the lateral protrusions 62 and 72 are arranged to protrude laterally of the case 11 through the openings 15a and 15b.
  • Engagement shaft material insertion holes 62a and 72a are formed in the lateral protrusions 62 and 72, respectively, passing through the upper and lower surfaces of the lateral protrusions 62 and 72.
  • the engagement shaft material insertion holes 62a, 72a extend long along the protruding direction of the side projections 62, 72, and the engagement shaft materials 82, 83 inserted into the engagement shaft material insertion holes 62a, 72a, respectively.
  • the inside of the engaging shaft member insertion holes 62a, 72a extending in the protruding direction of the lateral protrusions 62, 72 is ).
  • the width of the engagement shaft material insertion holes 62a, 72a is slightly larger than the diameter of the engagement shaft materials 82, 83, and the side peripheral surfaces of the engagement shaft materials 82, 83 are formed in the engagement shaft material insertion holes 62a, 72a.
  • the dimensions are set to allow contact with the inner surface of the
  • a cylindrical rotary shaft member 81 is inserted into the shaft member insertion portion 51 of the rotary operation knob 50 .
  • the upper end of the rotating shaft member 81 is inserted into a rotating shaft member holding hole 21 a formed on the lower surface side of the lid member support portion 21 that constitutes the upper case member 20 .
  • the lower end of the rotation shaft member 81 is inserted into a rotation shaft member holding hole 31 a formed on the upper surface side of the rotation operation knob support portion 31 that constitutes the lower case member 30 .
  • the rotation shaft member 81 is held between the upper case member 20 and the lower case member 30, and the rotation operation knob 50 is connected to the rotation shaft in the extending direction of the rotation shaft member 81. It is rotatable with respect to the case 11 around .
  • the engagement shaft member 82 is inserted into the engagement shaft member insertion hole 62a formed in the side protrusion 62 constituting the slide member 60.
  • the upper end of the engagement shaft member 82 is fitted into an engagement shaft member fixing portion 42 a formed at the tip of the lid arm portion 42 that constitutes the lid member 40 .
  • the lower end of the engagement shaft member 82 is fitted into an engagement shaft member fixing portion 52 a formed on the distal end side of the operating arm portion 52 that constitutes the rotation operation knob 50 .
  • the tip of the screw inserted from the lower surface side of the engagement shaft member fixing portion 52a passes through the inner cavity of the cylindrical engagement shaft member 82 and is screwed with a nut on the upper surface side of the engagement shaft member fixing portion 42a. has been done.
  • the engagement shaft member 82 may be a screw or the like that fixes the lid member 40 and the rotation operation knob 50. In this way, the lid member 40 and the rotation operation knob 50 are integrally connected so as to be rotatable, and the engagement shaft member 82 is fixed between the lid member 40 and the rotation operation knob 50. It is in a state of being The engagement shaft member 82 is not fixed to the side protrusion 62 constituting the slide member 60, but is movable within the engagement shaft insertion hole 62a formed in the side protrusion 62.
  • An engagement shaft member 83 is inserted into an engagement shaft insertion hole 72a formed in the side protrusion 72 constituting the slide member 70.
  • the upper end of the engagement shaft member 83 is fitted into an engagement shaft member fixing portion 43 a formed at the tip of the lid arm portion 43 that constitutes the lid member 40 .
  • the lower end of the engagement shaft member 83 is fitted into an engagement shaft member fixing portion 53 a formed on the distal end side of the operating arm portion 53 that constitutes the rotation operation knob 50 .
  • the tip of the screw inserted from the lower surface side of the engagement shaft member fixing portion 53a passes through the inner cavity of the cylindrical engagement shaft member 83 and is screwed onto the upper surface side of the engagement shaft member fixing portion 43a with a nut. has been done.
  • the engagement shaft member 83 may be a screw or the like that fixes the lid member 40 and the rotation operation knob 50. In this way, the lid member 40 and the rotation operation knob 50 are integrally connected so as to be rotatable, and the engagement shaft member 83 is fixed between the lid member 40 and the rotation operation knob 50. It is in a state of being The engagement shaft member 83 is not fixed to the side protrusion 72 constituting the slide member 70, but is movable within the engagement shaft insertion hole 72a formed in the side protrusion 72.
  • FIG. 8 is a partially transparent plan view of the operating mechanism 10A according to the first embodiment of the present invention, showing a state in which the handle portions 54 and 55 of the rotary operating knob 50 are in symmetrical positions.
  • FIG. 9 is a partially transparent plan view of the operating mechanism 10A according to the first embodiment of the present invention, showing a state in which the handle portions 54 and 55 of the rotating operating knob 50 are rotated in one direction.
  • FIG. 8 is a partially transparent plan view of the operating mechanism 10A according to the first embodiment of the present invention, showing a state in which the handle portions 54 and 55 of the rotating operating knob 50 are rotated in one direction.
  • FIG. 10 is a partially transparent plan view of the operating mechanism 10A according to the first embodiment of the present invention, showing a state in which the handle portions 54 and 55 of the rotating operating knob 50 are rotated in the other direction. 8 to 10, in order to explain the positions of the pair of operating wires 3, 4 and the pair of slide members 60, 70, the lid member 40 and the upper case member 20 are shown in a transparent state.
  • the user grasps the case 11 constituting the operating mechanism 10A with one hand, moves the handle parts 54 and 55 with the fingers of the grasped hand, and rotates the rotary operation knob 50 to move the tubular member 2 far away. It is possible to perform a deflection operation of the operated portion 2a disposed on the proximal side.
  • the pair of operating arms 52 and 53 of the rotation operating knob 50 are in a state (hereinafter referred to as a neutral state) that is substantially perpendicular to the longitudinal direction of the lower case member 30 (case 11). ), and when the operating arms 52 and 53 are located at symmetrical positions, the pair of slide members 60 and 70 are also located at symmetrical positions.
  • a neutral state the operated portion 2a disposed on the distal end side of the tubular member 2 is adjusted so as to be in a straight extended state without being bent, as shown in FIG. 2A.
  • the engagement shaft member 82 is inserted into an engagement shaft insertion hole 62a formed in the side protrusion 62 of the slide member 60.
  • the slide main body portion 61 constituting the slide member 60 is arranged to be reciprocally displaced within the case 11, and the sliding direction of the reciprocating displacement is restricted only to the longitudinal direction.
  • the rotational force acting on the side protrusion 62 constituting the slide member 60 acts as a force pushing the slide main body 61 in the longitudinal direction, and the slide member 60 moves toward the proximal end side (in the direction of the arrow L11 in FIG. 9). ).
  • the operating wire 3 connected to the slide member 60 moves in conjunction with the slide member 60 so as to be drawn toward the proximal end along the axial direction.
  • the engagement shaft member 83 is inserted into an engagement shaft insertion hole 72 a formed in the side protrusion 72 that constitutes the slide member 70 .
  • the slide main body portion 71 constituting the slide member 70 is arranged to be reciprocally displaced within the case 11, and the sliding direction of the reciprocating displacement is restricted only to the longitudinal direction.
  • the rotational force acting on the lateral protrusion 72 constituting the slide member 70 acts as a force pushing the slide main body 71 in the longitudinal direction, and the slide member 70 moves toward the distal end side (in the arrow direction L12 in FIG. 9). ).
  • the operating wire 4 connected to the slide member 70 moves in conjunction with the slide member 70 so as to be pushed out toward the distal end along the axial direction.
  • the engagement shaft member 82 is inserted into an engagement shaft insertion hole 62a formed in the side protrusion 62 of the slide member 60.
  • the slide main body portion 61 constituting the slide member 60 is arranged to be reciprocally displaced within the case 11, and the sliding direction of the reciprocating displacement is restricted only to the longitudinal direction.
  • the rotational force acting on the side protrusion 62 constituting the slide member 60 acts as a force pushing the slide main body 61 in the longitudinal direction, and the slide member 60 moves toward the distal end side (in the arrow direction L21 in FIG. 10). ).
  • the operating wire 3 connected to the slide member 60 moves in conjunction with the slide member 60 so as to be pushed out toward the distal end along the axial direction.
  • the engagement shaft member 83 is inserted into an engagement shaft insertion hole 72 a formed in the side protrusion 72 that constitutes the slide member 70 .
  • the slide main body portion 71 constituting the slide member 70 is arranged to be reciprocally displaced within the case 11, and the sliding direction of the reciprocating displacement is restricted only to the longitudinal direction.
  • the rotational force acting on the lateral protrusion 72 constituting the slide member 70 acts as a force pushing the slide body 71 in the longitudinal direction, and the slide member 70 moves toward the proximal end side (arrow direction L22 in FIG. 10). ).
  • the operating wire 4 connected to the slide member 70 moves in conjunction with the slide member 70 so as to be drawn toward the proximal end along the axial direction.
  • the side protrusions 62 and 72 constituting the pair of slide members 60 and 70 are connected to the operating arms 52 and 53 of the rotary operating knob 50 and the engaging shaft member 82, respectively.
  • the configuration is such that they are engaged with each other via 83.
  • the rotation operation knob 50 is configured to rotate around a rotation center (rotation axis).
  • the pair of slide members 60 and 70 are configured to move in the axial direction (longitudinal direction) of the connected operating wires 3 and 4.
  • the force in the rotation direction applied to the rotation operation knob 50 by the operator's rotation operation is transmitted to the side protrusions 62 and 72 via the engagement shaft members 82 and 83 located at the engagement points, and This is converted into a force that moves the sections 61, 71 in the longitudinal direction.
  • the operating wires 3 and 4 are connected to the slide main bodies 61 and 71, and in conjunction with the movement of the slide main bodies 61 and 71 in the longitudinal direction, the operating wires 3 and 4 are also displaced in the axial direction, and as a result, The operated portion 2a disposed on the distal end side of the tubular member 2 can be deflected.
  • the engagement shaft members 82 and 83 which are the engagement point positions, are located at the cover member 40 and the rotation operation knob 50. It is fixed to , and moves on the circumference around the rotation axis without changing the radial distance from the rotation axis.
  • the engagement shaft members 82, 83 which are the positions of the engagement points, are separated from the slide members 60, 70, and the protruding direction of the lateral protrusions 62, 72 is It is adapted to move along the protruding direction within the engaging shaft member insertion holes 62a, 72a extending along the protruding direction.
  • the engagement shaft member insertion hole 62a, 72a has a shape that extends long along the direction in which the side protrusions 62 and 72 protrude.
  • the engagement shaft members 82 and 83 which are the positions of the engagement points, may be placed at positions spaced apart from the rotation center (rotation axis).
  • the operating mechanism 10A in this embodiment has a configuration in which lateral protrusions 62 and 72 are integrally formed with a pair of slide members 60 and 70 housed in the case 11 and protrude to both sides. Engagement shaft members 82 and 83, which are at the matching point, are arranged on the sides of the case 11 away from the rotation center (rotation axis).
  • the shapes of the case 11, the handle portions 54, 55, etc. are not particularly limited, and may be changed as necessary.
  • the rotation operation member 12 and the slide members 60, 70 which are constituted by the lid member 40 and the rotation operation knob 50, convert the rotation movement of the rotation operation member 12 into a reciprocating displacement movement of the slide members 60, 70. It suffices if they are engaged so that it does.
  • the engagement shaft members 82 and 83 are fixed to the rotation operation member 12 and are movable relative to the slide members 60 and 70, but the engagement shaft members 82 and 83 may be fixed to the slide members 60, 70 and movable relative to the rotation operation member 12.
  • one of the slide members 60 and 70 is removed, and only one operation wire rod is displaced in the axial direction to deflect the operated portion 2a. good.
  • the slide members 60 and 70 are displaced in the longitudinal direction in response to the rotation operation of the rotation operation knob 50, and thereby the operation wire rods 3 and 4 connected to the slide members 60 and 70
  • the operated portion 2a disposed on the distal end side of the tubular member 2 can be deflected.
  • tension acts on the operating wires 3 and 4 so as to return the operated portion 2a to its original straight state.
  • the tension of the operating wires 3 and 4 is transmitted from the lateral protrusions 62 and 72 of the slide members 60 and 70 to the operating arms 52 and 53 of the rotary operation knob 50, bringing the rotary operation knob 50 into a neutral state. Work to bring it back.
  • the rotation operation member 12 composed of the lid member 40 and the rotation operation knob 50 is rotatable, the operation wires 3 and 4 are displaced in the axial direction by their own tensile force.
  • the operated portion 2a may not be able to maintain the bent state in the desired deflection direction, and the deflection direction may change so as to return to the straight extended state.
  • the operation mechanism 10A in the first embodiment restricts the rotation of the rotation operation member 12 (lid member 40 and rotation operation knob 50) due to the tension of the operation wires 3 and 4, and It is configured to hold the portion 2a in a bent state in a desired deflection direction.
  • FIG. 11A is a side sectional view of the operating mechanism 10A in the first embodiment of the present invention, and is a side sectional view of the entire operating mechanism 10A.
  • FIG. 11B is a side sectional view of the operating mechanism 10A in the first embodiment of the present invention, and is an enlarged sectional view of the vicinity of the rotation axis (region R1 in FIG. 11A).
  • a lid member 40 is arranged above the upper case member 20.
  • the rotating inclined surface portion 44 of the lid member 40 overlaps with the fixed inclined surface portion 24 of the upper case member 20.
  • An inclined surface 24a is provided on the fixed inclined surface section 24 over the entire circumference, and an inclined surface 44a is provided on the rotary inclined surface section 44 over the entire circumference.
  • the inclined surface 24a formed on the fixed inclined surface section 24 and the inclined surface 44a formed on the rotary inclined surface section 44 are set so that their inclination angle and radial dimension are approximately the same, and they overlap each other. Face to face contact.
  • the lid member 40 is connected to the rotation operation knob 50, and is integrated with the connected rotation operation knob 50 to rotate the rotation axis (of the rotation shaft 81), which is the extending direction of the rotation shaft 81. It can rotate relative to the upper case member 20 about a substantially axial center portion.
  • the rotating inclined surface portion 44 formed integrally with the lid member 40 rotates with respect to the fixed inclined surface portion 24 integrally formed with the upper case member 20. Rotate.
  • the inclined surface 44a formed on the rotating inclined surface section 44 is pressed against the inclined surface 24a formed on the fixed inclined surface section 24 due to the coupling force between the lid member 40 and the rotating operation knob 50. Therefore, a normal force acts between the inclined surface 24a and the inclined surface 44a. Therefore, when the lid member 40 rotates relative to the upper case member 20, the inclined surfaces 24a and 44a slide in the circumferential direction while making surface contact with each other, and the inclined surfaces 24a and 44a have A drag force (frictional force) is generated in the opposite direction to each sliding direction.
  • one or both of the inclined surfaces 24a and 44a may be roughened to facilitate generation of frictional force between the inclined surfaces 24a and 44a.
  • the frictional force between the inclined surface 24a and the inclined surface 44a is set to be larger than the force in the rotation direction generated by the tension of the operating wires 3 and 4.
  • the rotation direction is Although force is applied to the lid member 40 and the rotation operation knob 50, the lid member 40 is fixed without moving relative to the upper case member 20 due to the frictional force between the inclined surfaces 24a and 44a.
  • the slide members 60, 70 and the operating wires 3, 4 connected to the slide members 60, 70 are also held in a fixed state without moving, and the operated portion 2a is bent in the desired deflection direction. It becomes fixed.
  • the frictional force between the inclined surface 24a and the inclined surface 44a is set to be smaller than a predetermined rotational force generated by the rotational operation of the operator.
  • the rotation operation knob 50 is rotated by the friction force between the inclined surface 24a and the inclined surface 44a. It is designed to be able to rotate against the As a result, the slide members 60, 70 and the operating wires 3, 4 connected to the slide members 60, 70 are displaced in the longitudinal direction, and the operated portion 2a is deflected.
  • the lid Since the connecting force between the member 40 and the rotary operation knob 50 directly becomes a normal force generated between these surfaces, it becomes difficult to finely adjust the magnitude of the frictional force.
  • the inclined surface 24a formed on the fixed inclined surface section 24 and the inclined surface 44a formed on the rotary inclined surface section 44 are rotated around the rotation axis. It has a tapered shape that is inclined along a predetermined conical surface. As a result, an angle is created between the direction of the force that presses the lid member 40 against the upper case member 20 (rotation axis direction) and the direction of the normal force generated between the inclined surface 24a and the inclined surface 44a. , the vertical force is weaker than the connection force between the lid member 40 and the rotary operation knob 50, making it easier to finely adjust the frictional force.
  • the angle of inclination of the inclined surface 24a and the inclined surface 44a with respect to the rotation axis is not particularly limited as long as it is 0° or 90° as described above, but it is possible to adjust the frictional force by setting it in the range of 30° to 60°, for example. Be able to do it properly and easily. Further, by making the inclined surfaces 24a and 44a inclined, the area of surface contact can be increased, and frictional force is likely to be generated.
  • an inclined surface 24a and an inclined surface 44a are provided over the entire circumference around the rotation axis, and the inclined surfaces 24a and 44a are formed so as to overlap each other.
  • the deflection direction of the operated portion 2a is fixed by the frictional force generated by the surface contact between the inclined surfaces 24a and 44a.
  • the operator can lock the operated portion 2a in a desired deflection direction by simply releasing his/her hand from the rotary operation knob 50 without operating the locking mechanism or the like, resulting in excellent operability. There is.
  • a notch or the like may be provided in a portion of one or both of the inclined surfaces 24a and 44a, so that the inclined surfaces 24a and 44a may not be in partial surface contact with each other.
  • the expression that the inclined surface is provided over the entire circumference also includes the case where there is a partial area where there is no surface contact between the opposing inclined surface.
  • the inclined surface provided on the rotating member (the inclined surface 44a of the rotating inclined surface section 44) and the relative
  • the inclined surface (the inclined surface 24a of the fixed inclined surface portion 24) provided on the member fixed to the fixed inclined surface portion 24 is configured to be in surface contact with each other at least in part or in whole without being separated from each other.
  • the inclined surface 44a of the rotating inclined surface section 44 and the inclined surface 24a of the fixed inclined surface section 24 are formed not only when the operator is not rotating the rotating operating member 12 but also when the operator rotates the rotating operating member 12. Even during dynamic operation, they do not separate and slide while making surface contact with each other.
  • FIG. 12 is a perspective view of the operating mechanism 10B according to the second embodiment of the present invention viewed from one direction
  • FIG. 13 is a perspective view of the operating mechanism 10B according to the second embodiment of the present invention viewed from the other direction.
  • FIG. 14 is an exploded perspective view of the operating mechanism 10B according to the second embodiment of the present invention, viewed from one direction
  • FIG. 15 is an exploded perspective view of the operating mechanism 10B according to the second embodiment of the present invention, viewed from the other direction.
  • the operating mechanism 10B includes a fixed member 110 configured to be graspable by an operator, a fixed operating member 120 fixed to the fixed member 110, and rotatably supported by the fixed member 110 and the fixed operating member 120. It is generally configured to include a rotation operation member 130, a first fan-shaped member (first movable member) 140, and a second fan-shaped member (second movable member) 150.
  • the operating mechanism 10B can perform a deflection operation of the operated section 2a without causing any slack in the operating wires 3 and 4 attached to the operated section 2a disposed on the distal end side of the tubular member 2.
  • the basic structure is based on the invention described in Utility Model Registration No. 3162588.
  • the fixing member 110 is a base material that is fixed when the operator performs a rotation operation.
  • a grip portion 110b that can be gripped by the operator is attached to the proximal end 110a of the fixed member 110, and the operator can rotate the rotation operation member 130 while gripping the grip portion 110b.
  • the grip portion 110b can be attached to the proximal end portion 110a of the fixing member 110 by fitting the proximal end portion 110a of the fixing member 110 into the insertion hole 110z formed in the grip portion 110b. It has become.
  • the grip portion 110b corresponds to a frame portion that can be held by the user, and may be housed in a case (housing) or the like.
  • a thin tubular sleeve portion 110c into which the tubular member 2 can be inserted and fixed is formed at the distal end of the fixing member 110. Further, the sleeve portion 110c is formed with a wire insertion hole 111a that guides the operating wires 3 and 4 inside the tubular member 2 toward the side surface of the operating mechanism 10B. Further, wiring or piping inside the tubular member 2 can also be led out through the wire insertion hole 111a. The piping, wiring, etc. led out from the wire insertion hole 111a is guided to the proximal end side through the vicinity of the fixing part 121 on the distal end side of the fixing operation member 120 or the vicinity of the recess 112a of the fixing member 110, which will be described later. It has become.
  • a recess 112a that is recessed laterally is formed in the longitudinally central portion of the fixed member 110, and the rotation operating member 130 is disposed within the recess 112a and can be rotated.
  • Fixing parts 113a and 114a for fixing the fixing part 121 on the distal end side and the fixing part 122 on the proximal end side of the fixed operation member 120 are provided on the distal end side and the proximal end side of the recessed part 112a, respectively. It is being The fixing parts 113a and 114a on the distal end side and the proximal end side of the fixing member 110 are set in a shape that matches the fixing parts 121 and 122 on the distal end side and the proximal end side of the fixed operation member 120, respectively.
  • the fixing part 113a on the distal end side of the fixing member 110 has two screw holes 113x and a receiving hole 113y formed therebetween, and the fixing part 113a on the proximal end side of the fixing member 110 has two screw holes 113x and a receiving hole 113y between them. Two screw holes 114x and a receiving hole 114y are formed in 114a between them.
  • a cylindrical fixed inclined surface portion 115a is provided approximately at the center of the recessed portion 112a formed in the fixed member 110.
  • the fixed inclined surface portion 115a forms an inclined surface 116a extending along the entire circumference along a predetermined conical surface centered on the rotation axis of the rotation operation member 130 disposed on the side of the fixed member 110.
  • the inclined surface 116a is a surface inclined along a conical surface having a virtual fixing point (vertex) on the side, and extends approximately in a circular shape around the rotation axis of the rotation operation member 130 over the entire circumference. It is spreading.
  • the inclined surface 116a formed by the fixed inclined surface portion 115a is formed to overlap with the inclined surface 137 formed by the rotating inclined surface portion 136 of the rotation operation member 130.
  • the inclination angle and radial dimension of the inclined surface 116a formed by the fixed inclined surface portion 115a are set to be substantially the same as the inclined surface 137 formed by the rotating inclined surface portion 136 of the rotation operation member 130.
  • the center of the inclined surface 116a extending in a substantially circular shape coincides with the rotation center (rotation axis) of the rotation operation member 130 during rotation operation.
  • an inclined surface 137 formed by the rotating inclined surface section 136 of the rotating operation member 130 and an inclined surface 116a formed by the fixed inclined surface section 115a of the fixed member 110 overlap.
  • the rotation operation member 130 is arranged as follows. The frictional force generated by the surface contact between the inclined surface 137 and the inclined surface 116a fixes the relative position of the rotating operation member 130 and the fixed member 110, thereby maintaining the deflection direction of the operated part 2a. is now possible.
  • the rotation operation member 130 is rotated against the fixed member 110 while the inclined surface 137 formed by the rotation inclined surface portion 136 of the rotation operation member 130 is in surface contact with the inclined surface 116a formed by the fixed inclined surface portion 115a of the fixed member 110. It is designed to rotate.
  • the inclination angle and radial dimension of the inclined surface 116a formed by the fixed inclined surface portion 115a of the fixed member 110 are set to be substantially the same as the inclined surface 137 formed by the rotating inclined surface portion 136.
  • the fixing operation member 120 includes a fixing part 121 on the distal end side, a fixing part 122 on the proximal end side, and a substantially annular edge 123.
  • the inside of the edge 123 is a penetrating part, and the inside of the edge 123 is integrally formed with a first protrusion 124, a second protrusion 125, and a third protrusion 126 that protrude inward (toward the center of the edge 123). It is formed as follows.
  • the inner portion of the edge 123 is an annular protrusion 127 that slightly protrudes in an annular shape.
  • the center of the substantially circular tubular edge 123 coincides with the rotation center (rotation axis) of the rotation operation member 130 during rotation operation.
  • the fixing parts 121 and 122 on the distal end side and the proximal end side of the fixing operation member 120 are set in a shape that matches the fixing parts 113a and 114a on the distal end side and the proximal end side of the fixing member 110, respectively.
  • two screw holes 121x and a protrusion 121y are formed in the fixing part 121 on the distal end side of the fixing operation member 120, and a protrusion 121y is formed between them.
  • the fixing portion 122 has two screw holes 122x and a protrusion 122y formed therebetween.
  • the position of the fixed member 110 with respect to the fixed operation member 120 is determined, and the screw holes 113x and 114y of the fixed member 110 are fixed.
  • the fixing member 110 is fixed to the fixed operating member 120 by passing a screw through the screw hole 121x of the fixed operating member 120.
  • the rotation operation member 130 is a member for an operator to perform rotation operation.
  • the rotation operation member 130 is rotated at a predetermined angle (in this implementation It is rotatably supported between a fixed member 110 and a fixed operating member 120 so that it can reciprocate by approximately 270 degrees (in the present embodiment).
  • the rotation operation member 130 has a substantially disk-shaped disk portion 131 and grip portions 132 arranged at equal intervals along the circumferential direction on the side periphery of the disk portion 131.
  • the disk portion 131 is formed with a circular recessed portion 133 that is slightly recessed corresponding to the annular protrusion 127 of the fixed operation member 120 described above.
  • the grip portion 132 has a shape that allows the operator to easily rotate the rotation operation member 130 with a finger or the like.
  • a substantially circular through hole 134 is formed approximately at the center of the circular recessed portion 133 .
  • the center axis of this substantially circular through hole 134 coincides with the rotation center (rotation axis) of the rotation operation member 130 during rotation operation.
  • a first end portion 135a and a second end portion 135b are formed in a substantially arc shape centered on the approximately center portion (rotation center) of the circular recessed portion 133.
  • An arcuate groove 135 is formed. In this embodiment, the arcuate groove 135 is formed over an angular range of approximately 270 degrees.
  • the middle portion of the arcuate groove 135 is a wide portion 135c that is wider than the narrow portion on the side closer to the first end 135a or the second end 135b.
  • This wide portion 135c constitutes an introduction portion when the first fan-shaped member 140 and the second fan-shaped member 150 are loosely fitted.
  • the rotation operation member 130 is arranged in a recess 112a provided in the longitudinal center of the fixed member 110 and is rotatable.
  • the recess 112a of the fixed member 110 is provided with a fixed inclined surface portion 115a forming an inclined surface 116a, and the rotation operation member 130 is provided with a through hole 134 at a position corresponding to the fixed inclined surface portion 115a of the fixed member 110.
  • a rotating inclined surface portion 136 is provided at the peripheral edge of the rotary slanted surface portion 136 .
  • the rotation inclined surface portion 136 of the rotation operation member 130 is an inclined surface extending along the entire circumference along a predetermined conical surface centered on the rotation axis of the rotation operation member 130 (approximately the central axis of the through hole 134). 137 is formed.
  • the inclined surface 137 is a surface inclined along a conical surface having a virtual fixed point (apex) on the side, and extends approximately in a circular shape around the entire circumference around the rotation axis of the rotation operation member 130. It is spreading.
  • the inclined surface 137 formed by the rotating inclined surface section 136 is formed to overlap the inclined surface 116a formed by the fixed inclined surface section 115a of the fixed member 110.
  • the frictional force generated by the surface contact between the inclined surface 137 and the inclined surface 116a fixes the relative position of the rotating operating member 130 and the fixed member 110, thereby preventing the deflection of the operated portion 2a. Being able to maintain direction.
  • the rotation operating member 130 rotates with respect to the fixed member 110 while the inclined surface 137 formed by the rotating inclined surface portion 136 is in surface contact with the inclined surface 116a formed by the fixed inclined surface portion 115a of the fixed member 110. It looks like this.
  • the inclination angle and radial dimension of the inclined surface 137 formed by the rotating inclined surface section 136 are set to be substantially the same as the inclined surface 116a formed by the fixed inclined surface section 115a of the fixed member 110.
  • the first fan-shaped member 140 and the second fan-shaped member 150 are members formed in a symmetrical shape so as to form a pair with each other.
  • the proximal end of the operating wire 3 is connected and fixed to the first fan-shaped member 140, and the proximal end of the operating wire 4 is connected and fixed to the second fan-shaped member 150. ing.
  • the first fan-shaped member 140 includes a substantially fan-shaped plate portion 141 having a large outer arc and a small inner arc, and a substantially arc-shaped plate portion 141 that is slidably fitted loosely into the arc-shaped groove 135 of the rotation operation member 130 described above. It has leg portions 142. The tip of the leg portion 142 is formed to be slightly wide to form a wide portion 143, and is prevented from slipping out from the arcuate groove 135 when it is loosely fitted into the arcuate groove 135.
  • the large arc on the outside and the small arc on the inside of the plate-shaped portion 141 are formed to be substantially concentric with the arc-shaped groove 135, with the legs 142 loosely fitted into the arc-shaped groove 135.
  • a peripheral groove (operating wire guide groove) 144 for guiding the operating wire 3 along a large arc (arc-shaped edge) on the outside of the plate-like portion 141 is formed.
  • a screw hole 145 for screwing and fixing the proximal end portion of the operating wire 3 and a screw hole from the peripheral groove 144 are provided on the side surface of the plate-shaped portion 141 opposite to the side surface on which the leg portions 142 are provided.
  • a groove 146 for guiding the operating wire 3 is formed in the groove 145, and the length and tensile force (tension) of the operating wire 3 can be adjusted by winding up the operating wire 3.
  • the wide portion 135c of the arcuate groove 135 of the rotating operating member 130 is connected to the fixed operating member 120. 120, and insert the leg portion 142 (wide portion 143) of the first fan-shaped member 140 into the wide portion 135c.
  • the first fan-shaped member 140 is slidably fitted into the narrow portion of the arcuate groove 135 on the side closer to the first end 135a.
  • the second fan-shaped member 150 is formed in a shape that is an inversion of the first fan-shaped member 140, and has the same configuration as the first fan-shaped member 140.
  • the second fan-shaped member 150 includes a substantially fan-shaped plate portion 151 having a large outer arc and a small inner arc, and a substantially arc-shaped plate portion 151 that slidably fits into the arc-shaped groove 135 of the rotation operation member 130 described above. It has leg portions 152.
  • the tip of the leg portion 152 is formed slightly wide to form a wide portion 143, and is prevented from slipping out from the arcuate groove 135 when it is loosely fitted into the arcuate groove 135.
  • the large arc on the outside and the small arc on the inside of the plate-shaped portion 151 are formed so as to be substantially concentric with the arc-shaped groove 135, with the legs 152 loosely fitted into the arc-shaped groove 135.
  • a peripheral groove (operating wire guide groove) 154 for guiding the operating wire 4 along the outer large arc (arc-shaped edge) is formed in the plate-shaped portion 151.
  • screw holes 155 for screwing and fixing the proximal end portion of the operating wire 4, and screw holes from the peripheral groove 154.
  • a groove 156 for guiding the operating wire 4 is formed in the groove 155, and the length and tensile force of the operating wire 4 can be adjusted by winding up the operating wire 4.
  • the wide portion 135c of the arcuate groove 135 of the rotating operating member 130 is connected to the fixed operating member 120. 120 so that it is positioned between the second protrusion 125 and the third protrusion 126. Then, by inserting the leg portion 152 (wide portion 153) of the second fan-shaped member 150 into the wide portion 135c and moving it toward the second end portion 135b, the second fan-shaped member 150 is inserted into the second portion of the arcuate groove 135. It is slidably fitted loosely into the narrow portion on the side closer to the end portion 135b. Note that in the assembled state of the operating mechanism 10B, the middle portion of the arcuate groove 135 in which the wide portion 135c is formed is located on the proximal end side.
  • FIG. 16 is a front view for explaining the operation of the operating mechanism 10B in the second embodiment of the present invention, and shows a state in which the arcuate grooves 135 of the rotation operating member 130 are set to be symmetrical. It is a diagram.
  • FIG. 17 is a front view for explaining the operation of the operating mechanism 10B in the second embodiment of the present invention, and is a diagram showing a state in which the rotating operating member 130 is rotated in the first direction.
  • FIGS. 16 to 18 are a front view for explaining the operation of the operating mechanism 10B in the second embodiment of the present invention, and is a diagram showing a state in which the rotating operating member 130 is rotated in the second direction.
  • the first fan-shaped member 140 and the second fan-shaped member 150 are illustrated with dotted lines, and the operating wires 3 and 4 are emphasized with thick lines.
  • the arc-shaped groove 135 of the rotating operation member 130 is aligned with the line passing through the center of the fixed portion 121 on the distal end side and the fixed portion 122 on the proximal end side of the fixed operation member 120.
  • a neutral state the first end 135a of the arcuate groove 135 is set at a position overlapping the first protrusion 124, and the arcuate groove
  • the second end portion 135b of 135 is set at a position overlapping the second protrusion 125.
  • the first fan-shaped member 140 can slide along the arcuate groove 135 between the first protrusion 124 and the third protrusion 126
  • the second fan-shaped member 150 can slide between the second protrusion 125 and the third protrusion 126. It is slidable along the arcuate groove 135 in the portion between the protrusion 126 and the protrusion 126 .
  • the proximal end of the operating wire 3 is guided from the proximal end of the tubular member 2 to the fixed portion 121 on the distal end side of the fixed operating member 120 through the sleeve portion 110c and the wire insertion hole 111a.
  • the proximal end of the operating wire 3 has a circumferential groove 144 formed from the fixed part 121 on the distal end side of the fixed operating member 120 to the outer large arc side of the first fan-shaped member 140 and a groove 146 on the side surface. is guided to the screw hole 145 through the.
  • the proximal end of the operating wire 3 is fixed to the first fan-shaped member 140 by screwing.
  • the proximal end portion of the operating wire 4 is guided from the proximal end of the tubular member 2 to the fixed portion 121 on the distal end side of the fixed operating member 120 through the sleeve portion 110c and the wire insertion hole 111a.
  • the proximal end of the operating wire 4 is guided in the opposite direction to the operating wire 3 from the fixed part 121 on the distal end side of the fixed operating member 120, and is formed on the outer large arc side of the second fan-shaped member 150. It is guided into a screw hole 155 through a circumferential groove 154 and a groove 156 on the side surface.
  • the proximal end of the operating wire 4 is fixed to the second fan-shaped member 150 by screwing.
  • the first fan-shaped member 140 is rotated in the second direction (arrow B2 direction) by the tensile force of the operating wire 3, and the leg portion 142 of the first fan-shaped member 140 is attached to the first protrusion 124. It is in a state where it touches and stops. Further, the second fan-shaped member 150 is rotated in the first direction (arrow B1 direction) by the tensile force of the operating wire 4, and the leg portion 152 of the second fan-shaped member 150 comes into contact with the second protrusion 125 and is stopped. It becomes.
  • the proximal ends of the operating wires 3 and 4 are respectively connected to a first sector member 140 and a second sector member 150 that slide independently of each other along the arcuate groove 135 of the rotation operating member 130. has been done.
  • the rotation in the direction in which the operating wire 3 connected to the first fan-shaped member 140 is loosened, or the rotation in the direction in which the operating wire 4 connected to the second fan-shaped member 150 is loosened is caused by the first protrusion 124 or Since they are stopped by the two protrusions 125, the operating wires 3 and 4 are prevented from becoming slack.
  • the first end 135a of the arcuate groove 135 contacts the leg 152 of the first fan-shaped member 140 and rotates the first fan-shaped member 140, thereby pulling the operating wire 3 into tension.
  • the second end 135b of the arcuate groove 135 contacts the leg 152 of the second fan-shaped member 150 and rotates the second fan-shaped member 150, thereby applying tension to the operating wire 4. Power is generated.
  • the first end 135a of the arcuate groove 135 comes into contact with the leg 142 of the first fan-shaped member 140, so that the first fan-shaped member 140 can rotate together with the rotation operation member 130.
  • the tensile force generated in the operating wire 3 acts as a force that moves the first fan-shaped member 140 in the direction of arrow B2.
  • the force is transmitted from the legs 142 of the first fan-shaped member 140 to the first end 135a of the arcuate groove 135, and acts in a direction to rotate the rotation operation member 130 together with the first fan-shaped member 140 in the direction of arrow B2.
  • the operation wire 3 is displaced in the axial direction by its own tensile force, and as a result, the operated part 2a is bent in the desired deflection direction. There is a possibility that the deflection direction may change so that it returns to the straight extended state.
  • the second end 135b of the arcuate groove 135 comes into contact with the leg 152 of the second fan-shaped member 150, so that the second fan-shaped member 150 can rotate together with the rotation operation member 130.
  • the tensile force generated in the operating wire 4 acts as a force that moves the second fan-shaped member 150 in the direction of arrow B1.
  • the force is transmitted from the legs 152 of the second fan-shaped member 150 to the second end 135b of the arcuate groove 135, and acts in a direction to rotate the rotation operation member 130 together with the second fan-shaped member 150 in the direction of arrow B1. .
  • the operation wire 4 is displaced in the axial direction by its own tensile force, and as a result, the operated part 2a is bent in the desired deflection direction. There is a possibility that the deflection direction may change so that it returns to the straight extended state.
  • the operating mechanism 10B in the second embodiment restricts the rotation of the rotating operating member 130 due to the tension of the operating wires 3 and 4, and bends the operated portion 2a in a desired deflection direction. It is constructed so that it can be held in
  • FIG. 19 is an enlarged sectional view of the operating mechanism 10B in the vicinity of the rotation axis in the second embodiment of the present invention.
  • the rotation axis is arranged in the vertical direction on the paper.
  • a rotation operation member 130 is arranged on the side of the fixed member 110 (on the upper side of FIG. 19).
  • the rotating inclined surface portion 136 of the rotating operation member 130 overlaps with the fixed inclined surface portion 115a of the fixed member 110.
  • An inclined surface 116a is provided on the fixed inclined surface section 115a over the entire circumference, and an inclined surface 137 is provided on the rotary inclined surface section 136 over the entire circumference.
  • the inclined surface 116a formed on the fixed inclined surface section 115a and the inclined surface 137 formed on the rotary inclined surface section 136 are set so that the inclination angle and the dimension in the radial direction are approximately the same, and they overlap each other. Face to face contact.
  • the rotation operation member 130 can rotate relative to the fixed member 110 around a rotation axis (approximately the central axis of the through hole 134).
  • a rotation axis approximately the central axis of the through hole 134.
  • the rotating inclined surface portion 136 is arranged so as to be sandwiched between the fixed member 110 and the fixed operation member 120.
  • the inclined surface 137 formed on the rotating inclined surface section 136 is pressed against the inclined surface 116a formed on the fixed inclined surface section 115a due to the coupling force between the fixed member 110 and the fixed operation member 120.
  • a normal force acts between the inclined surface 116a and the inclined surface 137. Therefore, when the rotation operation member 130 rotates with respect to the fixed member 110, the inclined surface 116a and the inclined surface 137 slide in the circumferential direction while making surface contact with each other, and the inclined surface 116a and the inclined surface 137 , a drag force (frictional force) is generated in the opposite direction to the respective sliding directions.
  • either one or both of the sloped surface 116a and the sloped surface 137 may be roughened to facilitate generation of frictional force between the sloped surface 116a and the sloped surface 137.
  • the frictional force between the inclined surface 116a and the inclined surface 137 is set to be larger than the force in the rotation direction generated by the tension of the operating wires 3 and 4.
  • the rotation operation member 130 When the operator releases the rotation operation member 130, only the tension of the operation wire 3 or the tension of the operation wire 4 is applied to the first fan-shaped member 140 or the second fan-shaped member 150, and the rotation is accordingly Although a force in this direction is applied to the rotation operation member 130, the rotation operation member 130 is fixed without moving relative to the fixed member 110 due to the frictional force between the inclined surface 116a and the slope surface 137.
  • the first fan-shaped member 140 or the second fan-shaped member 150, and the operating wire 3 or 4 connected to the first fan-shaped member 140 or the second fan-shaped member 150 are also held in a fixed state without movement,
  • the operated portion 2a is fixed in a bent state in a desired deflection direction.
  • the frictional force between the inclined surface 116a and the inclined surface 137 is set to be smaller than a predetermined rotational force generated by the rotational operation of the operator.
  • first fan-shaped member 140 or the second fan-shaped member 150, and the operating wire 3 or the operating wire 4 connected to the first fan-shaped member 140 or the second fan-shaped member 150 are displaced in the rotation direction, and the operated portion 2a becomes deflected.
  • the inclined surface 116a formed on the fixed inclined surface section 115a and the inclined surface 137 formed on the rotary inclined surface section 136 are rotated around the rotation axis. It has a tapered shape that is inclined along a predetermined conical surface. As a result, an angle is formed between the direction of force (rotation axis direction) in which the rotation operation member 130 is pressed against the fixed member 110 and the direction of the normal force generated between the inclined surface 116a and the inclined surface 137. Therefore, the vertical reaction force becomes weaker than the connection force between the lid member 40 and the rotation operation knob 50, and the frictional force can be easily adjusted finely.
  • the angle of inclination of the inclined surface 116a and the inclined surface 137 with respect to the rotation axis is not particularly limited as long as it is 0° or 90° as described above, but it is possible to adjust the frictional force by setting it in the range of 30° to 60°, for example. Be able to do it properly and easily. Further, by making the inclined surface 116a and the inclined surface 137 inclined, the area of surface contact can be increased, and frictional force is likely to be generated.
  • a member that rotates when the operator performs a rotation operation (rotation operation member 130) and a member that is relatively fixed without rotating when the operator performs a rotation operation (fixed member 110).
  • an inclined surface 137 and an inclined surface 116a are provided over the entire circumference around the rotation axis, and the inclined surface 116a and the inclined surface 137 are formed so as to overlap each other.
  • the deflection direction of the operated portion 2a is maintained by the frictional force generated by the surface contact between the inclined surfaces 116a and 137.
  • the operator can lock the operated portion 2a in a desired deflection direction by simply releasing his/her hand from the rotating operation member 130 without operating the locking mechanism or the like, resulting in excellent operability. There is.
  • a cutout or the like may be provided in a portion of one or both of the inclined surfaces 116a and 137, so that the inclined surfaces 116a and 137 may not be in surface contact with each other.
  • the expression that the inclined surface is provided over the entire circumference also includes the case where there is a partial area where there is no surface contact between the opposing inclined surface.
  • the inclined surface 137 of the rotating inclined surface portion 136 and the inclined surface 116a of the fixed inclined surface portion 115a are formed not only when the operator is not rotating the rotating operating member 130 but also when the operator rotates the rotating operating member 130. Even during dynamic operation, they do not separate and slide while making surface contact with each other.
  • FIG. 20 is a perspective view of the operating mechanism 10C according to the third embodiment of the present invention viewed from one direction
  • FIG. 21 is a perspective view of the operating mechanism 10C according to the third embodiment of the present invention viewed from the other direction.
  • FIG. 22 is an exploded perspective view of the operating mechanism 10C according to the third embodiment of the present invention, viewed from one direction
  • FIG. 23 is an exploded perspective view of the operating mechanism 10C according to the third embodiment of the present invention, viewed from the other direction.
  • the operating mechanism 10C includes a fixed member 110 configured to be graspable by an operator, a fixed operating member 120 fixed to the fixed member 110, and rotatably supported by the fixed member 110 and the fixed operating member 120.
  • Rotation operation member 130, first fan-shaped member (first movable member) 140, second fan-shaped member (second movable member) 150, fixed operation member 220 fixed to fixed member 110, fixed member 110 and fixed It is generally configured to include a rotational operation member 230 rotatably supported by the operation member 220, a third fan-shaped member (third movable member) 240, and a fourth fan-shaped member (fourth movable member) 250. There is.
  • the fixed operation member 120, the rotary operation member 130, the first fan-shaped member (first movable member) 140, and the second fan-shaped member (second movable member) 150 included in the operation mechanism 10C in the third embodiment are the same as those in the second embodiment. This is the same as the operating mechanism 10B in , and detailed explanation will be omitted here.
  • the operating mechanism including these components may be referred to as a first operating mechanism.
  • the first operating mechanism is capable of displacing the operating wire 3 and the operating wire 4 in the axial direction.
  • the operating mechanism 10C in the third embodiment further includes a fixed operating member 220, a rotating operating member 230, a third fan-shaped member 240, and a fourth fan-shaped member 250.
  • the operating mechanism including these components may be referred to as a second operating mechanism.
  • the second operating mechanism is capable of axially displacing operating wires 5 and 6, which are different from operating wires 3 and 4, respectively. That is, the operating mechanism 10C is capable of displacing a total of four operating wires 3, 4, 5, and 6, respectively, in the axial direction.
  • the four operating wires 3, 4, 5, and 6 that can be operated by the operating mechanism 10C are inserted into the interior of the tubular member 2 and extend to the operated portion 2a.
  • the four operating wires 3, 4, 5, and 6 are fixedly arranged at equal intervals (90° intervals) in the circumferential direction around the central axis of the operated portion 2a, and the operating wires 3,
  • the plane in which the distal end 2c of the tubular member 2 moves due to the action from the operating wire rods 5 and 6 is set so as to be substantially perpendicular to the plane in which the distal end 2c of the tubular member 2 moves due to the action from the operating wires 5 and 6. ing.
  • the operated portion 2a When any of the operating wires 3, 4, 5, and 6 is pulled toward the proximal end, the operated portion 2a is bent toward the side where the pulled-in operating wires 3, 4, 5, and 6 are arranged. The direction of the distal end 2c of the tubular member 2 is changed. By displacing the four operating wires 3, 4, 5, and 6 in the axial direction by operating the operating mechanism 10C, the operated portion 2a can be deflected in four directions: up, down, left, and right.
  • a first operating mechanism is attached to the fixed member 110, and a second operating mechanism is attached symmetrically to the first operating mechanism with the fixing member 110 in between. It is configured so that
  • the fixed operation member 220, the rotation operation member 230, the third fan-shaped member 240, and the fourth fan-shaped member 250 that constitute the second operation mechanism are the fixed operation member 120, the rotation operation member 130, and the rotation operation member 130 that constitute the first operation mechanism, respectively. It has the same configuration as the first fan-shaped member 140 and the second fan-shaped member 150.
  • a wire insertion hole 111b is formed in the sleeve portion 110c of the fixing member 110 to guide the operating wires 5 and 6 in the tubular member 2 toward the side surface of the operating mechanism 10C. Further, wiring or piping inside the tubular member 2 can also be led out through the wire insertion hole 111b.
  • the back side of the recess 112a of the fixing member 110 has a shape symmetrical to the recess 112a, and a recess 112b that is recessed laterally is formed.
  • the rotation operation member 230 is disposed within the recess 112b and is rotatable.
  • the second operating mechanism is arranged symmetrically with the first operating mechanism with the fixing member 110 in between.
  • Fixing parts 113b and 114b for fixing the fixing part 221 on the distal end side and the fixing part 222 on the proximal end side of the fixed operation member 220 are provided on the distal end side and the proximal end side of the recessed part 112b, respectively.
  • the fixing parts 113b and 114b on the distal end side and the proximal end side of the fixing member 110 are set to have a shape that matches the fixing parts 221 and 222 on the distal end side and the proximal end side of the fixed operation member 220, respectively.
  • the fixing part 113b on the distal end side of the fixing member 110 has two screw holes 113p and a receiving hole 113q formed between them, and the fixing part 113b on the proximal end side of the fixing member 110 Two screw holes 114p and a receiving hole 114q are formed in 114b.
  • a cylindrical fixed inclined surface portion 115b is provided approximately at the center of the recessed portion 112b formed in the fixed member 110.
  • the fixed inclined surface portion 115b forms an inclined surface 116b that extends along the entire circumference along a predetermined conical surface centered on the rotation axis of the rotation operation member 230 disposed on the side of the fixed member 110.
  • the inclined surface 116b is a surface inclined along a conical surface having a virtual fixed point (vertex) on the side, and extends approximately in a circular shape around the rotation axis of the rotation operation member 230 over the entire circumference. It is spreading.
  • the inclined surface 116b formed by the fixed inclined surface portion 115b is formed to overlap the inclined surface 237 formed by the rotating inclined surface portion 236 of the rotation operation member 230.
  • the inclination angle and radial dimension of the inclined surface 116b formed by the fixed inclined surface portion 115b are set to be substantially the same as the inclined surface 237 formed by the rotating inclined surface portion 236 of the rotation operation member 230.
  • the center of the substantially circularly extending inclined surface 116b coincides with the rotation center (rotation axis) of the rotation operation member 230 during rotation operation.
  • an inclined surface 237 formed by the rotating inclined surface section 236 of the rotating operation member 230 and an inclined surface 116b formed by the fixed inclined surface section 115b of the fixed member 110 overlap.
  • the rotation operation member 230 is arranged as follows. The frictional force generated by the surface contact between the inclined surface 237 and the inclined surface 116b fixes the relative position of the rotating operation member 230 and the fixed member 110, thereby maintaining the deflection direction of the operated portion 2a. is now possible.
  • the rotation operation member 230 is rotated against the fixed member 110 while the inclined surface 237 formed by the rotation inclined surface portion 236 of the rotation operation member 230 is in surface contact with the inclined surface 116b formed by the fixed inclined surface portion 115b of the fixed member 110. It is designed to rotate.
  • the inclination angle and radial dimension of the inclined surface 116b formed by the fixed inclined surface portion 115b of the fixed member 110 are set to be substantially the same as the inclined surface 237 formed by the rotating inclined surface portion 236.
  • the fixing operation member 220 includes a fixing part 221 on the distal end side, a fixing part 222 on the proximal end side, and a substantially annular edge part 223.
  • the inner side of the edge 223 is a penetrating part, and the inner surface of the edge 223 is integrally formed with a first protrusion 224, a second protrusion 225, and a third protrusion 226 that protrude inward (towards the center of the edge 223). It is formed as follows.
  • the inner portion of the edge 223 is an annular protrusion 227 that slightly protrudes in an annular shape.
  • the center of the substantially circular tubular edge 223 coincides with the rotation center (rotation axis) of the rotation operation member 230 during rotation operation.
  • the fixing parts 221 and 222 on the distal end side and the proximal end side of the fixing operation member 220 are set in a shape that matches the fixing parts 113b and 114b on the distal end side and the proximal end side of the fixing member 110, respectively.
  • two screw holes 221x and a protrusion 221y are formed in the fixing part 221 on the distal end side of the fixing operation member 220, and a protrusion 221y is formed between them.
  • the fixing portion 222 has two screw holes 222x and a protrusion 222y formed therebetween.
  • the position of the fixed member 110 with respect to the fixed operation member 220 is determined, and the screw holes 113p and 114q of the fixed member 110 are fixed.
  • the fixing member 110 is fixed to the fixed operating member 220 by passing a screw through the screw hole 221x of the fixed operating member 220.
  • the rotation operation member 230 is a member for an operator to perform a rotation operation.
  • the rotation operation member 230 is rotated at a predetermined angle (main direction) in a first direction (direction of arrow B3 shown in FIG. 24 described later) and a second direction B4 opposite to the first direction (direction of arrow B4 shown in FIG. 24 described later).
  • it is rotatably supported between the fixed member 110 and the fixed operation member 220 so that it can reciprocate by approximately 270 degrees.
  • the rotation operation member 230 has a substantially disk-shaped disk portion 231 and grip portions 232 arranged on the side periphery of the disk portion 231 at equal intervals along the circumferential direction.
  • the disk portion 231 is formed with a circular recessed portion 233 that is slightly recessed corresponding to the annular protrusion 227 of the fixed operation member 220 described above.
  • the grip portion 232 has a shape that allows the operator to easily rotate the rotation operation member 230 with a finger or the like.
  • a substantially circular through hole 234 is formed approximately at the center of the circular recessed portion 233 .
  • the center axis of this substantially circular through hole 234 coincides with the rotation center (rotation axis) of the rotation operation member 230 during rotation operation.
  • a first end portion 235a and a second end portion 235b are formed in a substantially arc shape centered on the approximately center portion (rotation center) of the circular recessed portion 233.
  • An arcuate groove 235 is formed. In this embodiment, the arcuate groove 235 is formed over an angular range of approximately 270 degrees.
  • the middle portion of the arcuate groove 235 is a wide portion 235c that is wider than the narrow portion on the side closer to the first end 235a or the second end 235b.
  • This wide portion 235c constitutes an introduction portion when the third fan-shaped member 240 and the fourth fan-shaped member 250 are loosely fitted.
  • the rotation operation member 230 is arranged in a recess 112b provided in the longitudinal center of the fixed member 110 so as to be rotatable.
  • the recess 112b of the fixed member 110 is provided with a fixed inclined surface portion 115b forming an inclined surface 116b, and the rotation operation member 230 is provided with a through hole 234 at a position corresponding to the fixed inclined surface portion 115b of the fixed member 110.
  • a rotating inclined surface portion 236 is provided on the peripheral edge of the rotary member.
  • the rotation inclined surface portion 236 of the rotation operation member 230 is an inclined surface extending along the entire circumference along a predetermined conical surface centered on the rotation axis of the rotation operation member 230 (approximately the central axis of the through hole 234). 237 is formed.
  • the inclined surface 237 is a surface inclined along a conical surface having a virtual fixed point (vertex) on the side, and extends approximately in a circular shape around the rotation axis of the rotation operation member 230 over the entire circumference. It is spreading.
  • the inclined surface 237 formed by the rotating inclined surface section 236 is formed to overlap the inclined surface 116b formed by the fixed inclined surface section 115b of the fixed member 110.
  • the frictional force generated by the surface contact between the inclined surface 237 and the inclined surface 116b fixes the relative position of the rotating operation member 230 and the fixed member 110, thereby preventing the deflection of the operated part 2a. Being able to maintain direction.
  • the rotation operating member 230 rotates with respect to the fixed member 110 while the inclined surface 237 formed by the rotating inclined surface portion 236 is in surface contact with the inclined surface 116b formed by the fixed inclined surface portion 115b of the fixed member 110. It looks like this.
  • the inclination angle and radial dimension of the inclined surface 237 formed by the rotating inclined surface section 236 are set to be substantially the same as the inclined surface 116a formed by the fixed inclined surface section 115b of the fixed member 110.
  • the third fan-shaped member 240 and the fourth fan-shaped member 250 are members formed in a symmetrical shape so as to form a pair with each other.
  • the proximal end of the operating wire 5 is connected and fixed to the third fan-shaped member 240, and the proximal end of the operating wire 6 is connected and fixed to the fourth fan-shaped member 250. ing.
  • the third fan-shaped member 240 includes a substantially fan-shaped plate portion 241 having a large outer arc and a small inner arc, and a substantially arc-shaped plate portion 241 that is slidably fitted loosely into the arc-shaped groove 235 of the rotation operation member 230 described above. It has leg portions 242. The tip of the leg portion 242 is formed slightly wide to form a wide portion 243, and is prevented from slipping out from the arcuate groove 235 when it is loosely fitted into the arcuate groove 235.
  • the large arc on the outside and the small arc on the inside of the plate-shaped portion 241 are formed so as to be substantially concentric with the arc-shaped groove 235, with the legs 242 loosely fitted into the arc-shaped groove 235.
  • a peripheral groove (operating wire guide groove) 244 for guiding the operating wire 5 is formed in the plate-shaped portion 241 along the outer large arc (arc-shaped edge). Further, on the side surface of the plate-shaped portion 241 opposite to the side surface on which the leg portions 242 are provided, a screw hole 245 for screwing and fixing the proximal end portion of the operating wire 5, and a screw hole from the peripheral groove 244 are provided.
  • a groove 246 for guiding the operating wire 5 is formed in 245, and the length and tensile force (tension) of the operating wire 5 can be adjusted by winding up the operating wire 5.
  • the wide portion 235c of the arcuate groove 235 of the rotating operating member 230 is connected to the fixed operating member. 220 so as to be positioned between the first protrusion 224 and the third protrusion 226, insert the leg part 242 (wide part 243) of the third fan-shaped member 240 into the wide part 235c, and By moving it toward the end 235a, the third fan-shaped member 240 is slidably fitted into the narrow portion of the arcuate groove 235 on the side closer to the first end 235a.
  • the fourth fan-shaped member 250 is formed in a shape that is an inversion of the third fan-shaped member 240, and has the same configuration as the third fan-shaped member 240.
  • the fourth fan-shaped member 250 includes a substantially fan-shaped plate portion 251 having a large outer arc and a small inner arc, and a substantially arc-shaped plate portion 251 that is slidably fitted into the arc-shaped groove 235 of the rotation operation member 230 described above. It has leg portions 252.
  • the tip of the leg portion 252 is formed slightly wide to form a wide portion 243, and is prevented from slipping out from the arcuate groove 235 when it is loosely fitted into the arcuate groove 235.
  • the large arc on the outside and the small arc on the inside of the plate-shaped portion 251 are formed so as to be substantially concentric with the arc-shaped groove 235, with the legs 252 loosely fitted into the arc-shaped groove 235.
  • a peripheral groove (operating wire guide groove) 254 for guiding the operating wire 6 along a large arc (arc-shaped edge) on the outside of the plate-like portion 251 is formed.
  • a screw hole 255 for screwing and fixing the proximal end portion of the operating wire 6 and a screw hole from the peripheral groove 254 are provided on the side surface of the plate-shaped portion 251 opposite to the side surface on which the leg portions 252 are provided.
  • a groove 256 for guiding the operating wire 6 is formed in the groove 255, and the length and tensile force of the operating wire 6 can be adjusted by winding up the operating wire 6.
  • the wide portion 235c of the arcuate groove 235 of the rotating operating member 230 is connected to the fixed operating member. 220 so that it is positioned between the second protrusion 225 and the third protrusion 226. Then, by inserting the leg portion 252 (wide portion 253) of the fourth fan-shaped member 250 into the wide portion 235c and moving it toward the second end portion 235b, the fourth fan-shaped member 250 is inserted into the second end of the arcuate groove 235. It is slidably fitted loosely into the narrow portion on the side closer to the end portion 235b. Note that in the assembled state of the operating mechanism 10C, the middle portion of the arcuate groove 235 in which the wide portion 235c is formed is located on the proximal end side.
  • FIG. 24 is a front view for explaining the operation of the operating mechanism 10C in the third embodiment of the present invention, and shows a state in which the arcuate grooves 235 of the rotation operating member 230 are set to be symmetrical. It is a diagram.
  • FIG. 25 is a front view for explaining the operation of the operating mechanism 10C in the third embodiment of the present invention, and is a diagram showing a state in which the rotating operating member 230 is rotated in the first direction.
  • FIG. 26 is a front view for explaining the operation of the operating mechanism 10C in the third embodiment of the present invention, and is a diagram showing a state in which the rotating operating member 230 is rotated in the second direction.
  • the third fan-shaped member 240 and the fourth fan-shaped member 250 are illustrated with dotted lines, and the operating wires 5 and 6 are emphasized with thick lines.
  • the arcuate groove 235 of the rotating operation member 230 is aligned with the line passing through the center of the fixed portion 221 on the distal end side and the fixed portion 222 on the proximal end side of the fixed operation member 220.
  • a neutral state the first end 235a of the arcuate groove 235 is set at a position overlapping the first protrusion 224, and the arcuate groove 235 is set to overlap with the first protrusion 224.
  • the second end 235b of 235 is set at a position overlapping the second protrusion 225.
  • the third fan-shaped member 240 can slide along the arcuate groove 235 between the first protrusion 224 and the third protrusion 226, and the fourth fan-shaped member 250 can slide between the second protrusion 225 and the third protrusion 226. It is slidable along the arcuate groove 235 in the portion between the protrusion 226 and the protrusion 226 .
  • the proximal end of the operating wire 5 is guided from the proximal end of the tubular member 2 to the fixed portion 221 on the distal end side of the fixed operating member 220 through the sleeve portion 110c and the wire insertion hole 111b.
  • the proximal end of the operating wire 5 is connected to a peripheral groove 244 formed from the fixed part 221 on the distal end side of the fixed operating member 220 to the outer large arc side of the third fan-shaped member 240 and a groove 246 on the side surface. and is guided to the screw hole 245.
  • the proximal end of the operating wire 5 is fixed to the third fan-shaped member 240 by screwing.
  • the proximal end of the operating wire 6 is guided from the proximal end of the tubular member 2 to the fixed portion 221 on the distal end side of the fixed operating member 220 through the sleeve portion 110c and the wire insertion hole 111b.
  • the proximal end of the operating wire 6 is guided in the opposite direction to the operating wire 5 from the fixed part 221 on the distal end side of the fixed operating member 220, and is formed on the outer large arc side of the fourth fan-shaped member 250. It is guided into a screw hole 255 through a peripheral groove 254 and a groove 256 on the side surface.
  • the proximal end of the operating wire 6 is fixed to the fourth fan-shaped member 250 by screwing.
  • the third fan-shaped member 240 is rotated in the second direction (arrow B4 direction) by the tensile force of the operating wire 5, and the leg portion 242 of the third fan-shaped member 240 is attached to the first protrusion 224. It is in a state where it touches and stops. Further, the fourth fan-shaped member 250 is rotated in the first direction (direction of arrow B3) by the tensile force of the operating wire 6, and the leg portion 252 of the fourth fan-shaped member 250 comes into contact with the second protrusion 225 and is stopped. It becomes.
  • the proximal ends of the operating wires 5 and 6 are respectively connected to a third sector member 240 and a fourth sector member 250 that slide independently of each other along the arcuate groove 235 of the rotation operating member 230. has been done.
  • the rotation in the direction in which the operating wire 5 connected to the third fan-shaped member 240 is loosened, or the rotation in the direction in which the operating wire 6 connected to the fourth fan-shaped member 250 is loosened is caused by the rotation of the first protrusion 224 or Since they are stopped by the two protrusions 225, the operating wires 5 and 6 are prevented from becoming slack.
  • the first end 135a of the arcuate groove 135 contacts the leg 152 of the first fan-shaped member 140 and rotates the first fan-shaped member 140.
  • a tensile force is generated in the operating wire 3
  • the second end 135b of the arcuate groove 135 contacts the leg 152 of the second fan-shaped member 150 to rotate the second fan-shaped member 150.
  • a tensile force is generated in the operating wire 4.
  • the first end 235a of the arcuate groove 235 contacts the leg 252 of the third fan-shaped member 240 to rotate the third fan-shaped member 240. Then, a tensile force is generated in the operating wire 5, and the second end 235b of the arcuate groove 235 comes into contact with the leg 252 of the fourth fan-shaped member 250, causing the fourth fan-shaped member 250 to rotate. Thus, a tensile force is generated in the operating wire 6.
  • the tensile force generated in the operating wires 3 and 4 rotates the rotating operating member 130, and as a result, the operated portion 2a is deflected to the desired deflection.
  • a problem may arise in that the bent state cannot be maintained.
  • the tensile force generated in the operating wires 5 and 6 rotates the rotating operating member 230, and as a result, the operated portion 2a maintains a bent state in the desired deflection direction. The problem may arise that it cannot be done.
  • the operating mechanism 10C in the third embodiment restricts the rotation of the rotating operating members 130 and 230 due to the tension of the operating wires 3, 4, 5, and 6, and moves the operated part 2a to a desired position. It is configured so that it can be held in a bent state in the deflection direction.
  • FIG. 27 is an enlarged sectional view of the vicinity of the rotation axis of the operating mechanism 10C in the third embodiment of the present invention.
  • the rotation axis is arranged in the vertical direction on the paper.
  • rotation operation members 130, 230 are arranged on the sides of the fixed member 110 (upper and lower sides in FIG. 27).
  • the rotating inclined surface portion 136 of the rotating operating member 130 overlaps with the fixed inclined surface portion 115a of the fixed member 110, and the rotating inclined surface portion 236 of the rotating operating member 230 overlaps the fixed inclined surface portion 115b of the fixed member 110. overlap to cover.
  • An inclined surface 116a is provided on the fixed inclined surface section 115a over the entire circumference, and an inclined surface 137 is provided on the rotary inclined surface section 136 over the entire circumference.
  • the fixed inclined surface portion 115b is provided with an inclined surface 116b over the entire circumference
  • the rotating inclined surface portion 236 is provided with an inclined surface 237 over the entire circumference.
  • the inclined surface 116a formed on the fixed inclined surface section 115a and the inclined surface 137 formed on the rotary inclined surface section 136 are set so that the inclination angle and the dimension in the radial direction are approximately the same, and they overlap each other. Face to face contact.
  • the inclined surface 116b formed on the fixed inclined surface section 115b and the inclined surface 237 formed on the rotating inclined surface section 236 are set so that the inclination angle and the radial dimension are approximately the same, They overlap each other and are in surface contact.
  • a frictional force is generated between the inclined surface 116b formed on the fixed inclined surface section 115b and the inclined surface 237 formed on the rotating inclined surface section 236.
  • This frictional force is set to be larger than the force in the rotational direction generated by the tension of the operating wires 5 and 6.
  • the rotation operation member 230 is not rotated only by the tension from the operation wires 5 and 6, and the operated portion 2a is fixed in a bent state in a desired deflection direction. Further, this frictional force is set to be smaller than a predetermined rotational force generated by the rotational operation of the operator.
  • the magnitude of the frictional force between the inclined surface 116a and the inclined surface 137 is determined by the force with which the rotating operating member 130 is pressed against the fixed member 110 (the coupling force between the fixed member 110 and the rotating operating member 130 in the rotating axis direction). ) can be controlled by adjusting. Since the inclined surface 116a and the inclined surface 137 have a tapered shape that is inclined along a predetermined conical surface centered on the rotation axis, the frictional force can be easily adjusted.
  • the magnitude of the frictional force between the inclined surface 116b and the inclined surface 237 is determined by the force with which the rotating operating member 230 is pressed against the fixed member 110 (the coupling force between the fixed member 110 and the rotating operating member 230 in the rotating axis direction). ) can be controlled by adjusting. Since the inclined surface 116b and the inclined surface 237 are tapered along a predetermined conical surface centered on the rotation axis, the frictional force can be easily adjusted.
  • the inclined surfaces 116a and 137 are Due to the frictional force generated by the surface contact and the frictional force generated by the surface contact between the inclined surfaces 116b and 237, the operated portion 2a can be held in a bent state in a desired deflection direction.
  • the operator can lock the operated part 2a in a desired deflection direction by simply releasing his/her hand from the rotation operating members 130, 230 without operating the locking mechanism or the like, which provides excellent operability. It has become.
  • FIG. 28 is a perspective view of the operating mechanism 10D according to the fourth embodiment of the present invention viewed from one direction
  • FIG. 29 is a perspective view of the operating mechanism 10D according to the fourth embodiment of the present invention viewed from the other direction.
  • FIG. 30 is an exploded perspective view of the operating mechanism 10D according to the fourth embodiment of the present invention viewed from one direction
  • FIG. 31 is an exploded perspective view of the operating mechanism 10D according to the fourth embodiment of the present invention viewed from the other direction. It is a diagram.
  • the operating mechanism 10D includes a case 400 that can be held by the operator, and an operating section 420 that is housed in the case 400.
  • the case 400 is made up of a pair of half members 401 and 402 that have substantially the same shape as each other, and are integrated with the operating section 420 sandwiched between them at the proximal end of the case 400.
  • a sleeve portion 403 is provided at the distal end of the case 400, allowing insertion and fixation of the tubular member 2.
  • the four operating wires 3, 4, 5, and 6 can be respectively displaced in the axial direction, as in the third embodiment described above.
  • the four operating wires 3, 4, 5, and 6 extend along the tubular member 2 through the sleeve portion 403 and are attached to the operated portion 2a disposed on the distal end side of the tubular member 2.
  • a Y-shaped adapter 404 that communicates with the inner cavity of the tubular member 2 is provided near the distal end of the case 400.
  • the proximal end side of the case 400 is configured to accommodate and fix the operating section 420.
  • annular portions 401a, 402a and locking grooves 401b, 402b are formed in half member 401 and half member 402, respectively.
  • the edges 123 and 223 of the fixed operation members 120 and 220 can be fitted into the annular parts 401a and 402a, respectively.
  • the fixing member 110 of the operating mechanism 10D in the fourth embodiment is provided with two semicircular flat plate members 411 and 412, one large and one small.
  • the locking grooves 401b and 402b of the case 400 are formed to correspond to the flat plate members 411 and 412 of the fixing member 110.
  • the flat plate members 411, 412 of the fixed member 110 are fitted into the locking grooves 401b, 402b and fixed. It has become.
  • the case 400 has a structure that matches the shape and size of the operating section 420, and is fixed with the operating section 420 sandwiched between the half members 401 and 402.
  • the method of fixing the fixing member 110 or the fixing operation members 120, 220 to the case 400 is not particularly limited, and may be fixed using, for example, screws or adhesive.
  • the operating unit 420 fixed to the case 400 has a fixed member 110, a fixed operating member 120 fixed to the fixed member 110, and a fixed operating member 120 fixed to the fixed member 110 and the fixed operating member 120, similarly to the configuration in the third embodiment described above.
  • a rotation operation member 130 rotatably supported, a first fan-shaped member (first movable member) 140 and a second fan-shaped member (second movable member) 150, and a fixed operation member 220 fixed to the fixed member 110.
  • a rotation operation member 230 rotatably supported by the fixed member 110 and the fixed operation member 220, a third fan-shaped member (third movable member) 240, and a fourth fan-shaped member (fourth movable member) 250, It is roughly composed of:
  • the operation unit 420 is configured to perform the same operations as in the third embodiment described above. Also in the operating mechanism 10D in the fourth embodiment, the fixed member 110 and the fixed operating members 120, 220 are fixed relative to the case 400, and are sandwiched between the fixed member 110 and the fixed operating members 120, 220. The arranged rotation operation members 130 and 230 are rotatably supported by the case 400. The first to fourth fan-shaped members 140, 150, 240, 250 move independently according to the rotation operation of the rotation operation members 130, 230 by the operator, and the first to fourth fan-shaped members 140, 150 , 240, 250, respectively, can be displaced in the axial direction to deflect the operated portion 2a.
  • the operating mechanism 10D in the fourth embodiment restricts the rotation of the rotating operating members 130 and 230 due to the tension of the operating wires 3, 4, 5, and 6, and bends the operated portion 2a in a desired deflection direction. It is constructed so that it can be held in
  • FIG. 32 is an enlarged sectional view of the vicinity of the operating section 420 of the operating mechanism 10D in the fourth embodiment of the present invention.
  • the rotation axis is arranged in the vertical direction on the paper.
  • rotation operating members 130, 230 are arranged on the sides of the fixed member 110 (upper and lower sides in FIG. 32).
  • the rotating inclined surface portion 136 of the rotating operating member 130 overlaps with the fixed inclined surface portion 115a of the fixed member 110, and the rotating inclined surface portion 236 of the rotating operating member 230 overlaps the fixed inclined surface portion 115b of the fixed member 110. overlap to cover.
  • An inclined surface 116a is provided on the fixed inclined surface section 115a over the entire circumference, and an inclined surface 137 is provided on the rotary inclined surface section 136 over the entire circumference.
  • the fixed inclined surface portion 115b is provided with an inclined surface 116b over the entire circumference
  • the rotating inclined surface portion 236 is provided with an inclined surface 237 over the entire circumference.
  • the inclined surface 116a formed on the fixed inclined surface section 115a and the inclined surface 137 formed on the rotary inclined surface section 136 are set so that the inclination angle and the dimension in the radial direction are approximately the same, and they overlap each other. Face to face contact.
  • the inclined surface 116b formed on the fixed inclined surface section 115b and the inclined surface 237 formed on the rotating inclined surface section 236 are set so that the inclination angle and the radial dimension are approximately the same, They overlap each other and are in surface contact.
  • a frictional force is generated between the inclined surface 116b formed on the fixed inclined surface section 115b and the inclined surface 237 formed on the rotating inclined surface section 236.
  • This frictional force is set to be larger than the force in the rotational direction generated by the tension of the operating wires 5 and 6.
  • the rotation operation member 230 is not rotated only by the tension from the operation wires 5 and 6, and the operated portion 2a is fixed in a bent state in a desired deflection direction. Further, this frictional force is set to be smaller than a predetermined rotational force generated by the rotational operation of the operator.
  • the magnitude of the frictional force between the inclined surface 116a and the inclined surface 137 is determined by the force with which the rotating operating member 130 is pressed against the fixed member 110 (the coupling force between the fixed member 110 and the rotating operating member 130 in the rotating axis direction). ) can be controlled by adjusting. Since the inclined surface 116a and the inclined surface 137 have a tapered shape that is inclined along a predetermined conical surface centered on the rotation axis, the frictional force can be easily adjusted.
  • the magnitude of the frictional force between the inclined surface 116b and the inclined surface 237 is determined by the force with which the rotating operating member 230 is pressed against the fixed member 110 (the coupling force between the fixed member 110 and the rotating operating member 230 in the rotating axis direction). ) can be controlled by adjusting. Since the inclined surface 116b and the inclined surface 237 are tapered along a predetermined conical surface centered on the rotation axis, the frictional force can be easily adjusted.
  • the inclined surfaces 116a and 137 are Due to the frictional force generated by the surface contact and the frictional force generated by the surface contact between the inclined surfaces 116b and 237, the operated portion 2a can be held in a bent state in a desired deflection direction.
  • the operator can lock the operated part 2a in a desired deflection direction by simply releasing his/her hand from the rotation operating members 130, 230 without operating the locking mechanism or the like, which provides excellent operability. It has become.
  • FIG. 33 is a perspective view of the operating mechanism 10E in the fifth embodiment of the present invention seen from one direction
  • FIG. 34 is a perspective view of the operating mechanism 10E in the fifth embodiment of the present invention seen from the other direction.
  • FIG. 35 is a perspective view of the operating section 520 of the operating mechanism 10E in the fifth embodiment of the present invention viewed from one direction
  • FIG. 36 is a perspective view of the operating section 520 of the operating mechanism 10E in the fifth embodiment of the present invention. It is a perspective view seen from another direction.
  • FIG. 33 is a perspective view of the operating mechanism 10E in the fifth embodiment of the present invention seen from one direction
  • FIG. 34 is a perspective view of the operating mechanism 10E in the fifth embodiment of the present invention seen from the other direction.
  • FIG. 35 is a perspective view of the operating section 520 of the operating mechanism 10E in the fifth embodiment of the present invention viewed from one direction
  • FIG. 36 is a perspective view of the operating section 520 of the operating mechanism 10E in the fifth embodiment of the
  • FIG. 37 is an exploded perspective view of the operating section 520 according to the fifth embodiment of the present invention viewed from one direction
  • FIG. 38 is an exploded perspective view of the operating section 520 according to the fifth embodiment of the present invention viewed from the other direction. It is a diagram.
  • the operating mechanism 10E includes a case 500 that can be held by the operator, and an operating section 520 housed in the case 500.
  • Case 500 consists of a pair of half-split members 501 and 502, which are integrated with an operating section 520 sandwiched between them at the proximal end of case 500.
  • the pair of half members 501 and 502 have substantially the same shape so as to overlap each other, and one half member 502 is formed with an annular portion 502a.
  • An edge 223 of the fixed operation member 220 can be fitted into the annular portion 502a.
  • the annular portion 502a is a position where a first handle portion 521 and a second handle portion 522 that can be operated by the operator are arranged.
  • a sleeve portion 503 is provided at the distal end of the case 500, allowing insertion and fixation of the tubular member 2.
  • the four operating wires 3, 4, 5, and 6 can be respectively displaced in the axial direction, as in the third embodiment described above. There is.
  • the four operating wires 3, 4, 5, and 6 extend along the tubular member 2 through the sleeve portion 503 and are attached to the operated portion 2a disposed on the distal end side of the tubular member 2.
  • a Y-shaped adapter 504 that communicates with the inner cavity of the tubular member 2 is provided near the distal end of the case 500.
  • the proximal end side of the case 500 is configured to accommodate and fix the operating section 520.
  • the case 500 has a structure that matches the shape and size of the operating section 520, and is fixed so that the operating section 520 is sandwiched between the half members 501 and 502.
  • the edge 223 of the fixed operation member 220 can be fitted into the annular portion 502a, and furthermore, in this embodiment, the connecting portion 511 between the fixed member 110 and the fixed operation member 120 protrudes radially outward. It has a substantially cylindrical shape.
  • the case 500 is provided with a hollow cylindrical accommodating portion 505 for accommodating this approximately cylindrical connecting portion. Note that the method of fixing the fixing member 110 or the fixing operation members 120, 220 to the case 500 is not particularly limited, and may be fixed using, for example, screws or adhesive.
  • the operating unit 520 fixed to the case 500 has a fixed member 110, a fixed operating member 120 fixed to the fixed member 110, and a fixed operating member 120 fixed to the fixed member 110 and the fixed operating member 120, similarly to the configuration in the third embodiment described above.
  • a rotation operation member 130 rotatably supported, a first fan-shaped member (first movable member) 140 and a second fan-shaped member (second movable member) 150, and a fixed operation member 220 fixed to the fixed member 110.
  • a rotation operation member 230 rotatably supported by the fixed member 110 and the fixed operation member 220, a third fan-shaped member (third movable member) 240, and a fourth fan-shaped member (fourth movable member) 250, It is roughly composed of:
  • the operation unit 520 is configured to perform the same operations as in the third embodiment described above.
  • the fixed member 110 and the fixed operating members 120, 220 are fixed relative to the case 500, and are sandwiched between the fixed member 110 and the fixed operating members 120, 220.
  • the arranged rotational operation members 130 and 230 are supported so as to be rotatable relative to the case 500.
  • the first to fourth fan-shaped members 140, 150, 240, 250 move independently according to the rotation operation of the rotation operation members 130, 230 by the operator, and the first to fourth fan-shaped members 140, 150 , 240, 250, respectively, can be displaced in the axial direction to deflect the operated portion 2a.
  • the rotating operating members 130 and 230 are housed in the case 500. Therefore, in order to be able to rotate the rotating operation members 130 and 230 inside the case 500 from outside the case 500, the operation section 520 is provided with a first handle section 521 and a second handle section 522.
  • the first handle portion 521 and the second handle portion 522 are arranged so as to overlap an annular portion 502a formed on one side of the case (half member 502 side).
  • the first handle portion 521 is an operation means for rotating a rotation operation member 230 disposed on a side (hereinafter sometimes referred to as the front side) of the half member 502 in which the annular portion 502a is formed. It is.
  • the first handle portion 521 includes a substantially circular first operation knob 521a and a cylindrical portion 521b that protrudes from the center of the first operation knob 521a toward the rotating operation member 230.
  • a through hole 521c passing through the first handle portion 521 is formed in the cylindrical portion 521b.
  • This through hole 521c is for inserting the engaging member 522b of the second handle portion 522, and the diameter of the through hole 521c is set to a size that allows the engaging member 522b to be inserted therethrough.
  • the central axis of the through hole 521c formed in the cylindrical portion 521b coincides with the rotation axis of the first handle portion 521.
  • the cylindrical portion 521b of the first handle portion 521 is connected to the rotation operation member 230, so that when the first handle portion 521 rotates, the rotation operation member 230 rotates together.
  • the connection method is not particularly limited, here, three screw holes are formed in the cylindrical portion 521b, and three screw holes are also formed in the rotation operation member 230 at positions corresponding to the screw holes in the cylindrical portion 521b.
  • the cylindrical portion 521b and the rotating operation member 230 can be screwed together using screws (not shown).
  • the rotation axis of the rotation operation member 230 coincides with the central axis of the through hole 521c formed in the cylindrical portion 521b.
  • the fixed operating member 220 is interposed between the first handle portion 521 and the rotating operating member 230, and the cylindrical portion 521b of the first handle portion 521 is located approximately at the center of the fixed operating member 220. A space is provided that allows insertion.
  • the second handle portion 522 is an operation means for rotating the rotation operation member 130 disposed on the far side (hereinafter sometimes referred to as the back side) from the half member 502 in which the annular portion 502a is formed. It is.
  • the second handle portion 522 includes a substantially circular second operating knob 522a and an engaging member 522b protruding from the center of the second operating knob 522a toward the rotation operating member 130.
  • the second handle part 522 is arranged on the front side of the first handle part 521 so as to overlap with the first handle part 521, and the engagement member 522b of the second handle part 522 is attached to the cylindrical part 521b of the first handle part 521. It is inserted into the formed through hole 521c. Note that since the second handle portion 522 is arranged to rest on the first handle portion 521, if the diameter of the second operation knob 522a is larger than the diameter of the first operation knob 521a, the first operation knob 521a may get in the way. This makes it difficult to operate the second handle portion 522. For this reason, it is preferable that the diameter of the second operation knob 522a is smaller than the diameter of the first operation knob 521a.
  • the engagement member 522b is connected to the rotation operation member 130 so that the rotation operation member 130 rotates together with the rotation operation of the second handle portion 522.
  • the connection method is not particularly limited, here, the distal end of the engaging member 522b is formed so as to have a hexagonal cross section, and the approximately central portion of the rotation operation member 130 has a hexagonal cross section.
  • An engagement hole 130p is formed.
  • the first handle portion 521 interposed between the second handle portion 522 and the rotation operation member 130 are the first handle portion 521, the fixed operation member 220, the rotation operation member 230, and the fixed member 110 in order from the front side.
  • a space is provided approximately at the center thereof, through which the engaging member 522b of the second handle portion 522 can be inserted.
  • the cylindrical portion 521b of the first handle portion 521 and the engagement member 522b of the second handle portion 522 are present approximately at the center of each member. Therefore, in this embodiment, the connecting portion 511 that connects the fixed member 110 and the fixed operation member 120 is provided so as to protrude radially outward.
  • the operating mechanism 10E in the fifth embodiment restricts the rotation of the rotating operating members 130, 230 due to the tension of the operating wires 3, 4, 5, 6, and bends the operated portion 2a in a desired deflection direction. It is constructed so that it can be held in
  • FIG. 39 is an enlarged sectional view of the vicinity of the operating section 520 of the operating mechanism 10E in the fifth embodiment of the present invention.
  • the rotation axis is arranged in the vertical direction on the paper.
  • rotation operating members 130, 230 are arranged on the sides of the fixed member 110 (upper and lower sides in FIG. 39).
  • the rotating inclined surface portion 136 of the rotating operating member 130 overlaps with the fixed inclined surface portion 115a of the fixed member 110, and the rotating inclined surface portion 236 of the rotating operating member 230 overlaps the fixed inclined surface portion 115b of the fixed member 110. overlap to cover.
  • An inclined surface 116a is provided on the fixed inclined surface section 115a over the entire circumference, and an inclined surface 137 is provided on the rotary inclined surface section 136 over the entire circumference.
  • the fixed inclined surface portion 115b is provided with an inclined surface 116b over the entire circumference
  • the rotating inclined surface portion 236 is provided with an inclined surface 237 over the entire circumference.
  • the inclined surface 116a formed on the fixed inclined surface section 115a and the inclined surface 137 formed on the rotary inclined surface section 136 are set so that the inclination angle and the dimension in the radial direction are approximately the same, and they overlap each other. Face to face contact.
  • the inclined surface 116b formed on the fixed inclined surface section 115b and the inclined surface 237 formed on the rotating inclined surface section 236 are set so that the inclination angle and the radial dimension are approximately the same, They overlap each other and are in surface contact.
  • a frictional force is generated between the inclined surface 116b formed on the fixed inclined surface section 115b and the inclined surface 237 formed on the rotating inclined surface section 236.
  • This frictional force is set to be larger than the force in the rotational direction generated by the tension of the operating wires 5 and 6.
  • the rotation operation member 230 is not rotated only by the tension from the operation wires 5 and 6, and the operated portion 2a is fixed in a bent state in a desired deflection direction. Further, this frictional force is set to be smaller than a predetermined rotational force generated by the rotational operation of the operator.
  • the magnitude of the frictional force between the inclined surface 116a and the inclined surface 137 is determined by the force with which the rotating operating member 130 is pressed against the fixed member 110 (the coupling force between the fixed member 110 and the rotating operating member 130 in the rotating axis direction). ) can be controlled by adjusting. Since the inclined surface 116a and the inclined surface 137 have a tapered shape that is inclined along a predetermined conical surface centered on the rotation axis, the frictional force can be easily adjusted.
  • the magnitude of the frictional force between the inclined surface 116b and the inclined surface 237 is determined by the force with which the rotating operating member 230 is pressed against the fixed member 110 (the coupling force between the fixed member 110 and the rotating operating member 230 in the rotating axis direction). ) can be controlled by adjusting. Since the inclined surface 116b and the inclined surface 237 are tapered along a predetermined conical surface centered on the rotation axis, the frictional force can be easily adjusted.
  • the inclined surfaces 116a and 137 are Due to the frictional force generated by the surface contact and the frictional force generated by the surface contact between the inclined surfaces 116b and 237, the operated portion 2a can be held in a bent state in a desired deflection direction.
  • the operator can lock the operated part 2a in the desired deflection direction by simply releasing his/her hands from the first handle part 521 and the second handle part 522 without operating the locking mechanism or the like, which improves operability. It is excellent.
  • the medical device according to the present invention displaces the operating wire attached to the tubular member in its axial direction in response to the rotation of the rotating operating member by the operator, and displaces the operating wire at the distal end side of the tubular member 2. It is now possible to perform a deflection operation of the operated part that is located on the screen.
  • the number of operating wires is not particularly limited, and may be a single ( The operated portion may be deflected using only one operating wire, or the operated portion may be deflected using a plurality of (two or more) operating wires.
  • the operating mechanism of the medical device includes a fixed member fixed to a case etc. that can be grasped by the operator, and a rotating member that rotates when operated by the operator.
  • the inclined surface of the fixed inclined surface portion provided on the fixed member and the inclined surface of the rotating inclined surface portion provided on the rotating member are arranged so that the rotation of the rotating member They are in a state of surface contact both when rotating and when not rotating.
  • the compatible inclined surfaces have a convex shape on one side and a concave shape on the other, but the fixed member may be convex and the rotating member may be concave, or the rotating member may be convex and the fixed member is concave. It may be a shape.
  • the inclined surface of the fixed inclined surface section and the inclined surface of the rotating inclined surface section in surface contact at all times (not only when not rotating but also when rotating), it is necessary to move both inclined surfaces along the rotating axis. It is preferable to arrange it in a symmetrical position with respect to For example, when the fixed member and the rotating member are both overlapped in a state perpendicular to the rotation axis, the inclined surfaces may be exactly overlapped and come into surface contact with each other.
  • each of the fixed inclined surface portion and the rotating inclined surface portion may be formed with a cylindrical surface centered around the rotational axis. It is preferable that the cylindrical surfaces formed on each of the fixed inclined surface portion and the rotating inclined surface portion have substantially the same dimensions in the radial direction, and are continuous surfaces from the respective inclined surfaces. When the cylindrical surfaces overlap each other, the inclined surfaces are also set to be in an ideal surface contact state. In this case, as shown schematically in FIGS. 40B and 40C, the outer circumferential surface of one cylinder is fitted over the inner circumferential surface of the other cylinder. In this way, the cylindrical surfaces formed on each of the fixed inclined surface section and the rotating inclined surface section have a function of guiding the inclined surfaces so that they come into ideal surface contact.
  • the inclined surface of the rotating inclined surface portion is in frictional contact with the inclined surface of the fixed inclined surface portion over the entire circumference, and the fixed inclined surface portion is moved in accordance with the rotation of the rotating operation member. While sliding while making frictional contact with the inclined surface of the fixed inclined surface part, the rotation of the rotating operating member subjected to the tension of at least one of the operating wires can be restricted by frictional contact with the inclined surface of the fixed inclined surface part. There is.

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Abstract

Afin d'obtenir une excellente opérabilité et une excellente commodité avec une configuration simple et compacte, un dispositif médical selon la présente invention comprend : une partie de surface inclinée fixe 24 qui est fixe par rapport à un élément fixe (élément de boîtier supérieur 20) ; et une partie de surface inclinée rotative 44 qui tourne conjointement avec la rotation d'un élément d'actionnement de rotation (élément de couvercle 40). La partie de surface inclinée fixe 24 et la partie de surface inclinée rotative 44 sont pourvues d'une surface inclinée 24a qui s'étend le long de toute la circonférence d'une surface conique prescrite. La surface inclinée 44a de la partie de surface inclinée rotative 44 entre en contact de frottement avec la surface inclinée 24a de la partie de surface inclinée fixe 24 le long de toute la circonférence de celle-ci, coulisse tout en réalisant un contact de frottement avec la surface inclinée 24a de la partie de surface inclinée fixe 24 en fonction de la rotation de l'élément d'actionnement de rotation (élément de couvercle 40), et limite, par l'intermédiaire du contact de frottement avec la surface inclinée 24a de la partie de surface inclinée fixe 24, la rotation de l'élément d'actionnement de rotation (élément de couvercle 40) qui a reçu une tension à partir d'un fil d'actionnement.
PCT/JP2023/013595 2022-03-31 2023-03-31 Dispositif médical WO2023191068A1 (fr)

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JP2022-058743 2022-03-31

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0998942A (ja) * 1995-10-06 1997-04-15 Olympus Optical Co Ltd 内視鏡湾曲操作装置
JP2007313292A (ja) * 2006-04-26 2007-12-06 Pentax Corp 内視鏡の湾曲保持機構
JP2016519964A (ja) * 2013-05-17 2016-07-11 エンドチョイス インコーポレイテッドＥｎｄｏｃｈｏｉｃｅ， Ｉｎｃ． ブレーキシステムを備えた内視鏡制御ユニット
WO2021026231A1 (fr) * 2019-08-05 2021-02-11 Adaptivendo Llc Ensembles et systèmes endoscopiques

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0998942A (ja) * 1995-10-06 1997-04-15 Olympus Optical Co Ltd 内視鏡湾曲操作装置
JP2007313292A (ja) * 2006-04-26 2007-12-06 Pentax Corp 内視鏡の湾曲保持機構
JP2016519964A (ja) * 2013-05-17 2016-07-11 エンドチョイス インコーポレイテッドＥｎｄｏｃｈｏｉｃｅ， Ｉｎｃ． ブレーキシステムを備えた内視鏡制御ユニット
WO2021026231A1 (fr) * 2019-08-05 2021-02-11 Adaptivendo Llc Ensembles et systèmes endoscopiques

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