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WO2019058812A1 - Méthode d'assemblage d'endoscope - Google Patents

Méthode d'assemblage d'endoscope Download PDF

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Publication number
WO2019058812A1
WO2019058812A1 PCT/JP2018/030190 JP2018030190W WO2019058812A1 WO 2019058812 A1 WO2019058812 A1 WO 2019058812A1 JP 2018030190 W JP2018030190 W JP 2018030190W WO 2019058812 A1 WO2019058812 A1 WO 2019058812A1
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WO
WIPO (PCT)
Prior art keywords
grease
net
endoscope
angle
assembling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/030190
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English (en)
Japanese (ja)
Inventor
卓郎 浅岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Corp
Original Assignee
Fujifilm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2019543477A priority Critical patent/JP6780126B2/ja
Publication of WO2019058812A1 publication Critical patent/WO2019058812A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/008—Articulations
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes

Definitions

  • the present disclosure relates to a method of assembling an endoscope.
  • Patent Document 1 listed below includes a plurality of node rings forming a curved tube portion, a plurality of tubes fixed to the node rings, and a wire inserted into the tube and operated to bend the curved tube portion.
  • An endoscope is provided. In this endoscope structure, it is described that the tube is inserted through the wire guide of the nodal ring, and grease or a fixed lubricant may be filled or coated between the tube and the wire guide. .
  • Patent Document 2 discloses an endoscope containing a powder lubricant made of molybdenum disulfide or the like for reducing the frictional resistance of the sliding portion of the operation wire from the outside of the blade.
  • a particulate first lubricant is applied to at least one of the inner peripheral surface of the insertion portion and the outer peripheral surface of the internal component, and a connecting portion for connecting the curved tube to the guiding tube.
  • an endoscope in which a gel-like second lubricant is applied between itself and an internal component.
  • the endoscope described in Patent Document 3 does not describe how to apply the gel-like second lubricant between the connection portion and the internal component. For example, when a greased internal body (wire) is inserted into a guide, the guide may be scratched.
  • the present disclosure has an object of providing an endoscope assembling method for efficiently applying grease to a necessary portion around an operation wire at the time of assembling the endoscope.
  • an operation wire is inserted through a connecting step of connecting a plurality of angle rings by a connecting portion, and a guide portion projecting in the inner circumferential direction of the angle ring, Mounting the tubular net on the outer circumferences of the plurality of angle rings, pushing in the grease radially inward from the outer surface side of the net, and at least a part of the operation wire positioned inside the plurality of angle rings Applying a grease.
  • the plurality of angle rings are connected by the connecting portion. Then, the operation wire is inserted into the guide portion protruding in the inner circumferential direction of the angle ring, and the outer periphery of the plurality of angle rings is covered with a tubular net. Furthermore, grease is pressed radially inward from the outer surface side of the net, and grease is applied to at least a part of the operation wires located inside the plurality of angle rings.
  • a method of assembling an endoscope according to a second aspect of the present disclosure is the method of assembling an endoscope according to the first aspect, wherein the applying step is performed by pressing grease radially inward from the outer surface side of the net. Injection process of injecting grease into the inside of the net and adhesion process of adhering grease to the inner circumferential surface of the wire insertion hole of the operation wire and guide section by curving the angle ring connection body to which a plurality of angle rings are connected And.
  • the applying step includes the injecting step and the grease attaching step, and pressing the grease radially inward from the outer surface side of the net by the injecting step Inject the grease into the inside of the net. Furthermore, the grease is adhered to the inner peripheral surface of the wire insertion hole of the operation wire and the guide portion by curving the angle ring connection body in the grease adhesion process. For this reason, grease can be efficiently applied to necessary portions around the operation wire when assembling the endoscope.
  • a method of assembling an endoscope according to a third aspect of the present disclosure is the method of assembling an endoscope according to the first aspect or the second aspect, wherein the applying step discharges grease from the outer surface side of the net. Use grease to press in radially inward of the net.
  • the grease is securely applied to the periphery of the operation wire by pressing the grease from the outer surface side of the net to the inner side in the radial direction of the net using the discharge device.
  • Grease is efficiently applied to necessary portions around the operation wire.
  • adhesion of grease to the finger of the worker is suppressed, and the workability is improved.
  • a method of assembling an endoscope according to a fourth aspect of the present disclosure is the method of assembling an endoscope according to the first aspect or the second aspect, wherein the applying step applies grease from the outer surface side of the net Press the grease through the eyes of the net and push the grease radially inward of the net.
  • grease is applied from the outer surface side of the net, and the grease is pushed inward in the radial direction of the net through the eyes of the net with a pressing jig.
  • the grease is reliably applied to the periphery of the operation wire, and the grease is efficiently applied to necessary portions around the operation wire.
  • a method of assembling an endoscope according to a fifth aspect of the present disclosure is the method of assembling an endoscope according to the first aspect or the second aspect, wherein the applying step is a first step of applying grease from the outer surface side of the net. And a second step of covering the heat-shrinkable tube before shrinking on the outer periphery of the net, a third step of thermally shrinking the heat-shrinkable tube, and pushing the grease radially inward of the net through the mesh. And a fourth step of removing.
  • the grease is surely applied to the periphery of the operation wire, and the necessary portion around the operation wire The grease is applied efficiently. Moreover, by using a heat-shrinkable tube, adhesion of grease to the finger of the worker is suppressed, and the workability is improved.
  • a method of assembling an endoscope according to a sixth aspect of the present disclosure is the method of assembling an endoscope according to the first aspect or the second aspect, wherein the applying step is a first step of applying grease from the outer surface side of the net. And, outside the radial direction of the net, the cover rubber is extrapolated in a state where the inner diameter of the cover rubber is increased by the negative pressure, and the cover rubber is contracted by removing the negative pressure and the grease is applied to the net. And c. Pushing in radially inward of the net through the eye.
  • the grease is surely applied to the periphery of the operation wire, and the necessary portion around the operation wire Grease is applied efficiently. Further, by using the cover rubber, adhesion of grease to the fingers of the worker is suppressed. Moreover, it can serve as the process of covering a cover rubber, and workability
  • a method of assembling an endoscope according to a seventh aspect of the present disclosure is the method of assembling an endoscope according to the second aspect, including covering rubber radially outward of the net between the injecting step and the grease attaching step. It has a rubber mounting process.
  • the grease injected into the inside comes out of the net by curving the angle ring connector. Can be prevented, and adhesion of grease to the fingers of the worker is suppressed. Moreover, there is no need to put the grease that has come out into the inside again, and the workability is improved.
  • the applying step is performed from the outer surface side of the net The process of apply
  • coating grease along the location where the operation wire is penetrated is included.
  • the grease is applied along the location where the operation wire is inserted from the outer surface side of the net, so the necessary portion around the operation wire The grease is applied efficiently.
  • the method of assembling an endoscope includes: Inserting the internals used for medical procedures and examinations radially inward of the plurality of angle rings, and the applying step includes grease in a state where the internals are inserted radially inward of the plurality of angle rings Apply
  • the grease is pushed from the outer surface side of the net, so that the internals are inserted when inserting the internals. It is avoided that grease adheres to the range other than a curved part, such as an end of a thing.
  • the applying step is performed from the outer surface side of the net Press the grease radially inwards and apply the grease only to a part of the operation wire located inside the plurality of angle rings.
  • the grease is pushed inward in the radial direction from the outer surface side of the net, and a portion of the operation wire located inside the plurality of angle rings Apply grease only.
  • the angle ring connection body it is possible to apply grease efficiently to the necessary portion around the operation wire at the time of assembling the endoscope.
  • grease can be efficiently applied to necessary portions around the operation wire when assembling the endoscope.
  • Fig. 1 is a perspective view showing an example of an endoscope of the present disclosure. It is an internal structure of the angle part of the endoscope shown in FIG. 1, Comprising: It is a perspective view shown in the state which looked at several angle rings from the outer peripheral side. It is a perspective view shown in the state which cut
  • FIG. 1 conceptually shows an example of an endoscope to which the method of assembling an endoscope according to an embodiment of the present disclosure is applied.
  • the endoscope 10 is inserted into a treatment unit for treatment or examination of a body cavity (bronchus, stomach, etc.) to observe the inside of the body, capture a still image or a moving image, or collect a living tissue. Take measures such as
  • the endoscope 10 captures (captures) an image of an examination site using a charge coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor, and observes the examination site and captures a moving image or a still image. It is a so-called electronic scope type endoscope.
  • the endoscope 10 is configured to have an insertion unit 12, an operation unit 14, a universal cord 16, an LG connector 18, and a video connector 20.
  • the endoscope 10 of the present embodiment can be suitably used as an endoscope for various uses such as for bronchus, surgery, pharynx, gastrointestinal tract, duodenum and the like.
  • the insertion part 12 is a long site
  • the insertion portion 12 has a distal end portion 24 which is a distal end on the insertion side (that is, an end opposite to the operation portion 14), an angle portion 26 connected to the distal end portion 24, and a flexible portion 28 connected to the angle portion 26.
  • the operation unit 14 is a part that operates the endoscope 10.
  • a treatment tool such as forceps
  • the suction button 34 and the air / water feed button 36 for feeding air or water from the nozzle (air / water feed channel) of the distal end portion 24 are disposed.
  • the endoscope 10 in the illustrated example has the functions of suction and air / water supply
  • the endoscope of the present disclosure may not have one or both functions of suction or air / water supply.
  • the endoscope of the present disclosure may not have one or both functions of suction or air / water supply.
  • it may have other functions.
  • the operation portion 14 is provided with two operation knobs 38 for bending the angle portion 26 and a brake 42 for holding the angle portion 26 in a curved state.
  • the operation unit 14 is configured to bend the angle unit 26 in, for example, four directions, upper and lower and left and right, by the operation of the operation knob 38.
  • the operation knob 38 is configured to selectively pull four operation wires 72 described later to bend the angle portion 26 in the pulling direction. The configuration for curving the angled portion 26 in the pulling direction will be described in detail later.
  • the operation unit 14 of the endoscope 10 also observes an image by an imaging unit (CCD sensor or CMOS sensor) such as a zoom switch, a still image shooting switch, a moving image shooting switch, a freeze switch, etc.
  • an imaging unit CCD sensor or CMOS sensor
  • CMOS sensor complementary metal-oxide-semiconductor
  • the LG (Light Guide) connector 18 is a portion for connecting the endoscope 10 to a water supply unit, an air supply unit, a suction unit, and the like in a facility where the endoscope 10 is used.
  • the LG connector 18 is provided with a water supply connector 50 for connecting the endoscope 10 and water supply (water supply) means of the facility, and an air supply connector 52 for connecting with the above-described air supply means.
  • a suction connector (not shown) or the like for connecting to the above suction means is disposed.
  • the LG connector 18 is also provided with an LG (Light Guide) rod 54 for connecting an illumination light source, and an S terminal (not shown) for connecting an S code when using an electronic knife.
  • a video connector 20 for connecting the processor device and the endoscope 10 is connected to the LG connector 18.
  • An image (image data) captured by an imaging unit (CCD sensor or CMOS sensor) of the distal end portion 24 and various instructions in the operation unit 14 are output from the video connector 20 to the processor device through the LG connector 18 by signal lines. Ru.
  • the universal cord (LG flexible portion) 16 is a portion for connecting the LG connector 18 and the operation unit 14.
  • a water supply channel connected to the water supply connector 50
  • an air supply channel connected to the air supply connector 52
  • a suction channel connected to the suction connector
  • propagation of observation light irradiated to the LG rod 54 from the illumination light source The light guide, the instruction by the operation of the operation unit 14, and the signal line for transferring the data of the image photographed by the imaging unit of the tip unit 24 are accommodated or inserted.
  • the suction channel is connected to the forceps channel in communication with the forceps hole of the distal end portion 24 of the insertion portion 12 through the suction button 34.
  • the water supply channel and the air supply channel are connected to the air supply / water supply channel communicating with the nozzle of the tip 24 via the air supply / water supply button 36.
  • the light guide is inserted through the operation unit 14 to the illumination lens of the distal end portion 24. Furthermore, as described above, the signal line is inserted from the video connector 20 through the LG connector 18 and the operation unit 14 to the imaging unit of the distal end portion 24.
  • An imaging unit formed by integrating a CCD sensor or a CMOS sensor, an imaging lens, etc. integrally into a tip end portion 24 which is a tip end of the insertion portion 12, and an illumination lens for irradiating observation light propagated by a light guide to an observation site Etc. are incorporated.
  • the distal end portion 24 is also provided with a forceps hole for inserting the forceps into the treatment portion, a nozzle for supplying air and water, and the like.
  • These components are located at the tip of an internal component 90 (see FIGS. 4A and 4B) described later.
  • the angled part (curved part) 26 as a curved part is curved in the vertical and horizontal directions by the operation of the two operation knobs 38 in the operation part 14 in order to insert the tip part 24 into the target position or to position it at the target position. Area.
  • the angle portion 26 will be described in detail later.
  • the flexible portion 28 is a portion connecting the distal end portion 24 and the angle portion 26 and the operation portion 14 and is a long tube having sufficient flexibility for insertion into the examination portion.
  • the forceps channel suction channel
  • the air / water channel for performing the air supply and water supply by the air / water supply button 36 (Air supply channel and water supply channel)
  • a signal line for transferring data of an image captured by an imaging unit (CCD sensor or CMOS sensor) of the tip end part 24, a light guide for transmitting illumination light, etc. 90 are inserted.
  • the internals 90 are parts used for medical treatment and examination.
  • an operation wire 72 or the like, which will be described later, for bending the angle portion 26 is also inserted through the flexible portion 28 and the angle portion 26.
  • FIGS. 2 to 4B are cross sectional views showing the angled portion 26 cut along the longitudinal direction.
  • the angled portion 26 is a plurality of substantially cylindrical angle rings (node rings) 62 and a plurality of pins as connecting portions for connecting (connecting) adjacent angle rings 62. 64 and.
  • the angle ring connector 65 is configured by connecting a plurality of angle rings 62.
  • the angle portion 26 is a distal end ring 66 disposed on the distal end side of the plurality of angle rings 62, and a proximal end ring disposed on the proximal end side (the operation portion 14 side shown in FIG. 1) of the plurality of angle rings 62. 68 and.
  • the distal end ring 66 and the adjacent angle ring 62 are connected by a pin 64, and the proximal end ring 68 and the adjacent angle ring 62 are connected by a pin 64.
  • the adjacent angle rings 62 are connected by pins 64 arranged at four places in the circumferential direction of the angle rings 62.
  • the angle rings 62 are connected by the pins 64 arranged at four positions on the upper and lower sides and both sides in FIGS. 2 and 3.
  • a guide portion 70 which protrudes inward in the radial direction of the angle ring 62 is provided.
  • Four operation wires 72 for bending the angle portion 26 are inserted in the guide portion 70.
  • the four operation wires 72 are disposed along the axial direction of the angle portion 26 and are configured so as not to cross each other (arranged substantially in parallel).
  • the guide unit 70 will be described in detail later.
  • the ends on the tip side of the four operation wires 72 are fixed to the tip ring 66 by the attachment portions 74 (see FIGS. 3 and 4A). Further, the starting point sides of the upper and lower two operation wires 72 are wound around a rotating body 100 (see FIG. 6) of the operation unit 14 described later. Moreover, although illustration is abbreviate
  • a guide coil contact spring
  • the angle ring 62 extends so as to arch in a direction intersecting with the axial direction of the angle portion 26 in a side view, and the adjacent angle rings 62
  • the arch shape is formed substantially symmetrical (symmetrically in the axial direction).
  • a pair of adjacent angle rings 62 substantially symmetrical (symmetrical in the axial direction) are arranged along the axial direction of the angle portion 26.
  • angle rings 62 are rotatably connected to each other about the pin 64 as an axis.
  • the upper and lower pins 64 of the angle ring 62 and the pins 64 in the middle in the vertical direction of the angle ring 62 are alternately arranged along the axial direction of the angle portion 26.
  • the tip ring 66 In the tip ring 66, one end is flat, only the other end is curved in the opposite direction to the tip, and a protrusion 82 is formed at the vertical middle of the other end. .
  • the projecting portion 82 of the tip ring 66 is overlapped with the projecting portion 80 provided at the middle portion of the adjacent angle rings 62 and connected by the pin 64.
  • the tip ring 66 and the angle ring 62 adjacent thereto are rotatably connected to each other by a pin 64.
  • the proximal end ring 68 is flat at one end, and only the other end is curved toward the distal end, and a protrusion 80 is formed in the vertical middle of the other end. There is.
  • the projecting portion 80 of the proximal end ring 68 is overlapped with the projecting portion 82 provided in the middle portion of the adjacent angle rings 62 and connected by the pin 64.
  • the proximal ring 68 and the adjacent angle ring 62 are pivotally connected to each other by a pin 64.
  • the guide portion 70 is integrally formed with the pin 64 and protrudes from the pin 64 radially inward (inner circumferential direction) of the angle ring 62.
  • the guide portion 70 includes a cylindrical portion 70A, and in the cylindrical portion 70A, a guide hole 70B is formed as a wire insertion hole penetrating in the axial direction of the plurality of angle rings 62.
  • the operation wire 72 is inserted into the guide hole 70B of the guide portion 70.
  • four operation wires 72 for bending the angle portion 26 are inserted through the guide holes 70B of the guide portions 70 at four places in the middle portions on both sides in the vertical and vertical directions (FIG. 2 to FIG. 4).
  • the inner diameter of the guide hole 70B is larger than the outer diameter of the operation wire 72.
  • a mounting ring 102 to which one axial end of the guide coil 76 is fixed is provided on the inner peripheral side of the proximal end ring 68.
  • the outer diameter of one end side (tip end 24 side) of the attachment ring 102 in the axial direction is smaller than the inner diameter of the proximal end ring 68, and the one end side of the attachment ring 102 in the axial direction is the inner peripheral side of the proximal end ring 68.
  • insertion portions 102B are formed, into which the axial one ends of the guide coil 76 are respectively inserted.
  • the insertion portion 102 ⁇ / b> B and the through hole 102 ⁇ / b> A communicate with each other at an axial intermediate portion of the mounting ring 102.
  • the inner diameter of the insertion portion 102B is larger than the inner diameter of the through hole 102A.
  • a protrusion 102C protruding outward in the radial direction is formed, and the protrusion 102C is in contact with the end surface of the proximal ring 68.
  • the attachment ring 102 is fixed to the proximal end ring 68 by, for example, bonding, soldering, or laser welding.
  • one end portion of the guide coil 76 in the axial direction is fixed to the attachment ring 102 in the axial direction of the guide coil 76 in a state where the guide coil 76 is inserted into the insertion portion 102B of the attachment ring 102.
  • the internals 90 used for medical treatment and examination are inserted into the inside of the plurality of angle rings 62 in the angle portion 26.
  • the tip of the built-in article 90 is joined to the attachment (not shown) of the tip ring 66 by a joint (not shown) such as adhesion or soldering.
  • a cylindrical (in the present embodiment, cylindrical) net 92 is covered (outlined).
  • the net 92 is configured by a metal mesh-like member.
  • the distal end side of the net 92 is fixed to the distal end ring 66, and the proximal end side of the net 92 is fixed to the proximal end ring 68 by adhesion, soldering, laser welding or the like (not shown).
  • the distal end ring 66 and the proximal end ring 68 are an example of the angle ring of the present disclosure.
  • the joint between the distal end ring 66 and the distal end of the net 92 and the joint between the proximal end ring 68 and the proximal end of the net 92 are examples of joints between the angle ring and the net.
  • a cylindrical (in the present embodiment, cylindrical) cover rubber 94 is covered (externally inserted) on the outer peripheral side of the cylindrical net 92.
  • FIG.2 and FIG.3 in order to make the structure of the angle part 26 intelligible, illustration of the built-in thing 90, the net 92, and the cover rubber 94 is abbreviate
  • the operation wire 72 is not particularly limited, and a wire formed by twisting a metal wire, a wire formed by twisting a plurality of metal stranded wires, a single wire metal wire Etc. can be used. However, in the endoscope 10 according to the present embodiment, it is preferable that the operation wire 72 be not a single wire but a stranded wire (a twist-like wire). Further, the diameter of the operation wire 72 is not particularly limited, and may be determined as appropriate according to the type of endoscope, the thickness of the insertion portion 12, the internals 90 accommodated in the insertion portion 12, and the like.
  • FIG. 6 A mechanism for bending the angle portion 26 is conceptually shown in FIG.
  • upper and lower two operation wires 72 inserted inside the angle portion 26 and the flexible portion 28 are connected at the operation portion 14 side, and the connected portion is wound around the rotating body 100. It is hung.
  • the rotating body 100 is a sprocket, and the two operation wires 72 are connected to the sprocket via a chain 73.
  • a connected portion of two operation wires 72 may be wound around a pulley as a rotating body.
  • the rotation shaft 100A of the rotating body 100 is rotatably supported by the operation of one operation knob 38 (see FIG. 1) provided in the operation unit 14.
  • the plurality of angle rings 62 disposed in the angle portion 26 are rotatably connected by the plurality of pins 64. Further, the two operation wires 72 are inserted into the guide holes 70B (see FIGS. 4A and 4B) of the plurality of guide portions 70.
  • the rotating body 100 is rotated clockwise in FIG. 6 and the upper operation wire 72 is pulled in the direction of arrow A and the lower operation wire 72 is fed out, the pulled operation wire 72 side is obtained.
  • the angle portion 26 curved according to the amount of pulling. In FIG. 6, the angled portion 26 curves upward with respect to the flexible portion 28.
  • the rotating body 100 rotates in the reverse direction (counterclockwise)
  • the lower operation wire 72 is pulled, and the upper operation wire 72 is fed out, and the angle according to the pulling amount
  • the portion 26 curves downward with respect to the flexible portion 28.
  • the two operation wires 72 at the middle portion in the vertical direction in FIGS. 4A and 4B are connected on the operation unit 14 side and wound around another rotating body.
  • the other rotary body is rotated by the operation of the other operation knob 38 (see FIG. 1), one operation wire 72 is wound and pulled, and the other operation wire 72 is fed out in reverse.
  • the angled portion 26 is curved in the left-right direction with respect to the flexible portion 28 in accordance with the amount of pulling with the pulled operation wire 72 side turned inward.
  • each process of assembling method of endoscope As shown in FIG. 7A, in the method of assembling the endoscope 10 according to the first embodiment, first, the plurality of angle rings 62 are connected by the pins 64 (connection step). In the present embodiment, when focusing on one angle ring 62, the upper and lower two places of the angle ring 62 adjacent to one side are connected by the pins 64, and the vertical direction of the angle ring 62 adjacent to the other side is connected. The two intermediate portions are connected by pins 64. This connection is repeated for a plurality of angle rings 62.
  • the operation wire 72 is inserted through the guide holes 70B (see FIG. 5) of the guide portions 70 that project radially inward (inwardly in the circumferential direction) of the plurality of angle rings 62 (attachment step ).
  • four operation wires 72 are provided in the guide holes 70B (see FIG. 5) of the four guide portions 70 at the upper and lower sides of one of the plurality of angle rings 62 and one side and the other side. Insert (attachment process).
  • the cylindrical net 92 is covered on the outer periphery of the some angle ring 62 (it extrapolates) (attachment process). Either of the step of inserting the operation wire 72 into the plurality of guide portions 70 and the step of covering the outer periphery of the plurality of angle rings 62 with the tubular net 92 may be performed first.
  • the internals 90 used for medical treatment and examination are inserted radially inward of the plurality of angle rings 62 (insertion step).
  • the distal end portion of the built-in object 90 is joined to the inner peripheral side of the distal end ring 66 constituting the distal end portion 24 of the endoscope 10.
  • the tip of the internal component 90 is joined to the inner peripheral side of the tip ring 66 by bonding, brazing, soldering, or a screw.
  • the flexible portion 28 is connected to the proximal end ring 68 side of the plurality of angle rings 62.
  • the grease 104 is pushed radially inward from the outer surface side of the net 92 into at least a part of the operation wire 72 located inside the plurality of angle rings 62, Grease 104 is applied to the operation wire 72 (application step).
  • application step the application process will be described more specifically.
  • the application process includes an injection process and a grease adhesion process described later.
  • the grease 104 is press-fitted to the inside in the radial direction of the net 92 using a grease gun 110 as a discharge device for discharging the grease 104. That is, the grease 104 is injected into the plurality of angle rings 62 by injecting the grease 104 radially inward from the outer surface side of the net 92 using the grease gun 110 (injection step).
  • the grease gun 110 includes a cylindrical container 112 for housing the grease 104, a conducting part 114 extending downward from the lower part of the container 112, and a discharge part 116 provided at the tip of the conducting part 114.
  • the conduction portion 114 includes a conduction hole 114A, and the grease 104 is drawn from the container 112 toward the discharge portion 116.
  • the discharge part 116 is equipped with the discharge port 116A whose internal diameter is larger than the internal diameter of 114 A of conduction holes, and the discharge port 116A is opened to the lower part.
  • a nozzle 118 is provided at the tip of the discharge port 116A.
  • the grease gun 110 is provided with a piston 120 disposed on the upper side of the container 112.
  • the piston 120 is provided with a pressing plate 120A which is inserted into the container 112 and pushes the grease 104 in the container 112.
  • the outer diameter of the pressing plate 120A is slightly smaller than the inner circumference of the container 112, and moves vertically while sliding on the inner wall of the container 112.
  • the piston 120 may be pushed downward by mechanical configuration, or may be pushed manually downward. By pressing the piston 120 downward, the grease 104 in the container 112 is discharged from the nozzle 118 of the discharge portion 116 through the conducting portion 114.
  • the inner diameter B1 of the discharge port 116A is larger than the dimension A1 from the guide portion 70 of the angle ring 62 to the edge of the angle ring 62.
  • the grease 104 for example, lithium, urea, fluorine or the like can be used. Among these, fluorine is the most preferable because of high chemical stability.
  • the grease 104 preferably has a worked penetration at 25 ° C. of 180 to 420, more preferably 200 to 400, and still more preferably 220 to 385.
  • the worked penetration indicates that the grease is hard when the numerical value is small and soft when the numerical value is large.
  • the worked penetration is a value measured based on the JIS K 2220 consistency test method.
  • the grease 104 is discharged by the grease gun 110 while rotating and axially moving the plurality of angle rings 62, thereby pressing the grease 104 from the outer surface side of the net 92 radially inward of the net 92.
  • Grease 104 is injected into the inside of the plurality of angle rings 62 (injection step).
  • the press-fitting of the grease 104 is repeated spotwise to the plurality of angle rings 62.
  • the grease 104 enters the inside of the angle ring 62 from the gap between the adjacent angle rings 62 and adheres to the periphery of the guide portion 70.
  • the grease 104 enters the inside from between adjacent angle rings 62 and wraps around the guide portion 70. At that time, the grease 104 is crushed by the built-in part 90, so that it becomes easy to get in between the guide hole 70B of the guide part 70 and the operation wire 72.
  • the angle ring connector 65 is curved in the axial direction to attach the grease 104 to the inner peripheral surface of the operation wire 72 and the guide hole 70B of the guide portion 70 (grease adhesion step).
  • FIG. 8A shows the case where the grease 104 has reached the operation wire 72 in the injection process with the angle ring connector 65 in a straight state.
  • FIG. 8B by bending the angle ring connector 65, the operation wire 72 moves in the axial direction (the direction of arrow B), and the grease 104 is torn and attached to the operation wire 72.
  • FIG. 9A shows that in the injection step, the grease 104 does not reach the operation wire 72 when the angle ring connector 65 is in the straight state.
  • FIG. 9B by bending the angle ring connector 65, the grease 104 adheres to the operation wire 72 when the operation wire 72 approaches the grease 104 at the same time as the grease 104 is raised.
  • FIG. 9C the bending of the angle ring connector 65 is returned, so that the operation wire 72 moves in the axial direction (the direction of the arrow C), and the grease 104 is torn and attached to the operation wire 72.
  • the press-fitting of the grease 104 is repeated spotwise to the plurality of angle rings 62, but the present disclosure is not limited to this method.
  • the grease 104 may be pressed in from the outer surface side of the net 92 along the location where the operation wires 72 radially inward of the plurality of angle rings 62 are inserted using the grease gun 110.
  • the cylindrical cover rubber 94 (see FIGS. 4A and 4B) is covered (externally inserted) on the radially outer side of the net 92 (rubber attachment process).
  • the cover rubber 94 expands the inner diameter of the cover rubber 94 by applying a negative pressure to the cylindrical member disposed on the outer peripheral side of the cover rubber 94, and in this state, the cover rubber 94 is disposed radially outside the net 92.
  • the diameter of the cover rubber 94 is reduced, and the cover rubber 94 is placed on the outer side in the radial direction of the net 92. Thereby, the angle part 26 of the endoscope 10 is created.
  • the angle section 26 of the endoscope 10 is further curved in the vertical and horizontal directions by the operation section 14 (see FIG. 1), whereby the operation wire 72 and the guide hole 70B of the guide section 70 (see FIG.
  • the grease 104 penetrates between the inner circumferential surface of (5) and (5). Further, grease 104 also penetrates between the pin 80 and the wall surface of the through hole 80A (see FIG. 5) of the projecting portion 80 and between the projecting portion 80 and the projecting portion 82.
  • the grease 104 is pressed (pushed) in from the outer surface side of the net 92 radially inward from the outer surface side of the net 92, and grease 104 is applied to at least a part of the operation wire 72.
  • the grease 104 is efficiently applied to a necessary portion around the operation wire 72 at the time of assembling the endoscope 10 as compared with the case of covering the tubular net after applying the grease. Can be applied.
  • the step of inserting the operation wire into the guide portions of the plurality of angle rings may adhere to other components, workers fingers and jigs during the process.
  • various parts such as work benches and jigs are contaminated, and it is necessary to remove grease and lubricating oil from unnecessary parts of fingers, jigs and parts. As a result, the workability is reduced.
  • the grease 104 is press-fit from the outer surface side of the net 92 radially inward of the net 92 using the grease gun 110. Furthermore, by bending the angle ring connector 65 in the axial direction, the grease 104 is attached to the inner circumferential surface of the operation wire 72 and the guide hole 70B of the guide portion 70. Thereby, the grease 104 is reliably applied to the sliding portion of the operation wire 72, and the grease 104 is efficiently applied to necessary portions around the operation wire 72. Further, by using the grease gun 110, the adhesion of the grease 104 to the finger of the worker is suppressed, and the workability is improved.
  • the cover rubber 94 can be covered immediately after the application of the grease 104, the grease 104 adhering to the surface of the net 92 can be prevented from adhering to the work bench or jig in the process of proceeding to the subsequent steps. Do not lose
  • the grease 104 is pressed in radially inward from the outer surface side of the net 92 by the grease gun 110, and the grease 104 is applied to at least a part of the operation wire 72. Therefore, the grease 104 is likely to be accumulated between the strands of the operation wire 72 and between the strands, and the lubricating performance can be stably maintained for a long time.
  • the cover rubber 94 is placed on the radially outer side of the net 92 after the application process of the grease 104. Therefore, when the cover rubber 94 is placed on the radially outer side of the net 92, scraping of the grease 104 is suppressed.
  • the internals 90 are inserted inside the plurality of angle rings 62 in the radial direction between the attaching process of the net 92 and the like and the applying process of the grease 104.
  • the grease 104 is pushed from the outer surface side of the net 92. Therefore, the distal end of the internals 90 when the internals 90 are inserted. It is avoided that the grease 104 adheres to the range other than the angle part 26 such as.
  • the grease gun 110 is used as the discharge device, but the grease 104 may be press-fitted by a discharge device such as a syringe or a dispenser.
  • the application process includes the injection process and the grease application process, but the present disclosure is not limited to this method.
  • the grease is likely to adhere around the guide portion inside the angle ring when the grease is pressed in from the outer surface side of the net using a grease gun, the above-mentioned grease attachment step of curving the angle ring connection body It is not necessary to provide it.
  • a plurality of angle rings 62 are connected by pins 64 (connection step).
  • the operation wire 72 is inserted into the guide hole 70B (see FIG. 5) of the guide portion 70 which protrudes radially inward (inner circumferential direction) of the plurality of angle rings 62 (attachment step).
  • the cylindrical net 92 is covered on the outer periphery of the some angle ring 62 (it extrapolates) (attachment process).
  • the internals 90 are inserted radially inward of the plurality of angle rings 62 (insertion step), and the tip of the internals 90 is joined to the inner peripheral side of the tip ring 66.
  • the steps from the connection step to the insertion step are the same as those in the first embodiment.
  • the process of connecting the flexible part 28 in the proximal end ring 68 side of several angle ring 62 is also included in these processes.
  • the coating process after the above-described insertion process is different from that of the first embodiment.
  • grease 104 is applied from the outer surface side of the net 92.
  • the grease 104 is applied to the outside of at least four operation wires 72 using, for example, a syringe not shown.
  • the grease 104 may be applied to the outside of at least four operation wires 72 while rotating and moving the plurality of angle rings 62 in the axial direction.
  • the grease 104 is pushed inward in the radial direction of the net 92 through the eyes of the net 92 using the spatula 130 as a pressing jig (injection step in the coating step).
  • the spatula 130 includes a rubber plate-like portion 130B supported by the tip of the support bar 130A.
  • the grease 104 is injected inside the plurality of angle rings 62 by pushing the grease 104 radially inward of the net 92 using the spatula 130 while rotating and axially moving the plurality of angle rings 62 (see FIG. Injection process).
  • the grease 104 enters the inside of the angle ring 62 from the gap between the adjacent angle rings 62 and adheres to the periphery of the guide portion 70.
  • the grease 104 is crushed by the built-in part 90, so that it becomes easy to get in between the guide hole 70B (see FIG. 5) of the guide part 70 and the operation wire 72.
  • the angle ring connector 65 is curved in the axial direction to attach the grease 104 to the inner peripheral surface of the operation wire 72 and the guide hole 70B (see FIG. 5) of the guide portion 70. (Grease adhesion process in a coating process).
  • the cylindrical cover rubber 94 (see FIGS. 4A and 4B) is covered (externally inserted) on the radially outer side of the net 92 (rubber attachment process). Thereby, the angle part 26 of the endoscope 10 is created.
  • the grease 104 is pushed radially inward from the outer surface side of the net 92 by the spatula 130, and the grease 104 is applied to at least a part of the operation wire 72. Therefore, in the above-described method of assembling the endoscope 10, the grease 104 is efficiently applied to a necessary portion around the operation wire 72 at the time of assembling the endoscope 10 as compared with the case of covering the tubular net after applying the grease. Can be applied.
  • the grease 104 is applied from the outer surface side of the net 92, and the grease 104 is pushed through the eyes of the net 92 with the spatula 130 into the radial inside of the net 92. .
  • the grease 104 is reliably applied to the sliding portion of the operation wire 72, and the grease 104 is efficiently applied to necessary portions around the operation wire 72.
  • the grease 104 when the grease 104 is applied from the outer surface side of the net 92 in the process shown in FIG. 10, for example, the location where the operation wire 72 inside the radial direction of the plurality of angle rings 62 is inserted.
  • the grease 104 may be applied along the
  • coating process contains an injection
  • this indication is not limited to this method.
  • a grease adhesion process for curving the above-mentioned angle ring connection is provided. It does not have to be.
  • a plurality of angle rings 62 are connected by pins 64 (connection step).
  • the operation wire 72 is inserted into the guide hole 70B (see FIG. 5) of the guide portion 70 which protrudes radially inward (inner circumferential direction) of the plurality of angle rings 62 (attachment step).
  • the cylindrical net 92 is covered on the outer periphery of the some angle ring 62 (it extrapolates) (attachment process).
  • the internals 90 are inserted radially inward of the plurality of angle rings 62 (insertion step), and the tip of the internals 90 is joined to the inner peripheral side of the tip ring 66.
  • the steps from the connection step to the insertion step are the same as those in the first embodiment.
  • the process of connecting the flexible part 28 in the proximal end ring 68 side of several angle ring 62 is also included in these processes.
  • the coating process after the above-described insertion process is different from that of the first embodiment.
  • grease 104 is first applied from the outer surface side of the net 92 (first step).
  • the grease 104 is applied to the outside of at least four operation wires 72 using, for example, a syringe not shown.
  • the heat-shrinkable tube 140 before contraction is placed on the outer periphery of the net 92 (second step). Further, as shown in FIG. 14, the heat-shrinkable tube 140 is thermally shrunk to push the grease 104 radially inward of the net 92 through the eyes of the net 92 (third step). As a result, the grease 104 enters the inside of the angle ring 62 from the gap between the adjacent angle rings 62 and adheres to the periphery of the guide portion 70. At that time, the grease 104 is crushed by the built-in part 90, so that it becomes easy to get in between the guide hole 70B (see FIG. 5) of the guide part 70 and the operation wire 72.
  • the third step corresponds to the injection step of injecting the grease 104.
  • the heat-shrinkable tube 140 is molded using a plastic film that shrinks by the application of heat.
  • the heat shrinkable tube 140 has a property of shrinking up to 60 to 70% as an example by heat treatment.
  • the heat-shrinkable tube 140 (see FIG. 14) on the outer peripheral side of the net 92 is removed (fourth step).
  • the heat-shrinkable tube 140 is removed from the outer peripheral surface (i.e., the outer surface side) of the net 92, for example, by cutting with the cutter along the axial direction.
  • the grease 104 is attached to the inner peripheral surface of the operation wire 72 and the guide hole 70B (see FIG. 5) of the guide portion 70. (Glyse adhesion process).
  • the grease adhesion process is performed after the fourth process, but may be performed before the fourth process. Thus, the application process is completed.
  • the cylindrical cover rubber 94 (see FIGS. 4A and 4B) is covered (externally inserted) on the radially outer side of the net 92 (rubber attachment process). Thereby, the angle part 26 of the endoscope 10 is created.
  • the heat contraction tube 140 pushes the grease 104 radially inward from the outer surface side of the net 92 and applies the grease 104 to at least a part of the operation wire 72 Do. Therefore, in the above-described method of assembling the endoscope 10, the grease 104 is efficiently applied to a necessary portion around the operation wire 72 at the time of assembling the endoscope 10 as compared with the case of covering the tubular net after applying the grease. Can be applied.
  • the grease 104 is pushed from the outer surface side of the net 92 by the heat-shrinkable tube 140, and the angle ring connector 65 is further curved. Thereby, the grease 104 is reliably applied to the sliding portion of the operation wire 72, and the grease 104 is efficiently applied to necessary portions around the operation wire 72. Moreover, by using the heat-shrinkable tube 140, adhesion of the grease 104 to the finger of the worker is suppressed, and the workability is improved.
  • the operation wires 72 inside the radial direction of the plurality of angle rings 62 are inserted.
  • Grease 104 may be applied along the portion.
  • the application process includes the injection process and the grease application process, but the present disclosure is not limited to this method.
  • the present disclosure is not limited to this method.
  • a plurality of angle rings 62 are connected by pins 64 (connection step).
  • the operation wire 72 is inserted through the guide hole 70B (see FIG. 5) of the guide portion 70 which protrudes radially inward (inner circumferential direction) of the plurality of angle rings 62, and on the outer periphery of the plurality of angle rings 62. Cover the tubular net 92 (extrapolate) (attachment step).
  • the internals 90 are inserted radially inward of the plurality of angle rings 62 (insertion step), and the tip of the internals 90 is joined to the inner peripheral side of the tip ring 66.
  • the steps from the connection step to the insertion step are the same as those in the first embodiment.
  • the process of connecting the flexible part 28 in the proximal end ring 68 side of several angle ring 62 is also included in these processes.
  • the coating process after the above-described insertion process is different from that of the first embodiment.
  • first grease 104 is applied from the outer surface side of the net 92 (first step).
  • the grease 104 is applied to the outside of at least four operation wires 72 using, for example, a syringe not shown.
  • the cylindrical member 150 is disposed on the outer peripheral side of the cylindrical cover rubber 94. Then, both end portions in the axial direction of the cover rubber 94 are pushed back and hooked to the edge portions 150 A on both sides in the axial direction of the cylindrical member 150.
  • a suction pipe 150B for suctioning internal air is formed. Then, the air inside the cylindrical member 150 is sucked from the suction pipe 150B by suction means (not shown), and the inside of the cylindrical member 150 is made negative pressure, whereby the outer peripheral surface of the cover rubber 94 becomes the cylindrical member 150.
  • the inner diameter of the cover rubber 94 is increased.
  • the cover rubber 94 is extrapolated to the radially outer side of the net 92. Thereafter, as shown in FIG. 19, the cover rubber 94 is contracted to cover the net 92 by releasing the negative pressure of the cylindrical member 150. Thereby, the grease 104 is pushed inward in the radial direction of the net 92 through the eyes of the net 92 by the cover rubber 94 (pushing step). As a result, the grease 104 enters the inside of the angle ring 62 from the gap between the adjacent angle rings 62 and adheres to the periphery of the guide portion 70.
  • this pressing step corresponds to the injection step of injecting the grease 104.
  • the grease 104 can be inserted into the operation wire 72 and the guide hole 70B of the guide portion 70 (see FIG. 5). Apply to the peripheral surface (grease adhesion process). Thus, the application process is completed.
  • the cover 92 is also used as a rubber mounting step for covering the cover rubber 94 on the radially outer side of the net 92. Thereby, the angle part 26 of the endoscope 10 is created.
  • the cover rubber 94 pushes in the grease 104 radially inward from the outer surface side of the net 92 and applies the grease 104 to at least a part of the operation wire 72 . Therefore, in the above-described method of assembling the endoscope 10, the grease 104 is efficiently applied to a necessary portion around the operation wire 72 at the time of assembling the endoscope 10 as compared with the case of covering the tubular net after applying the grease. Can be applied.
  • the grease 104 is pushed from the outer surface side of the net 92 by the cover rubber 94, and the angle ring connector 65 is further curved.
  • the grease 104 is reliably applied to the sliding portion of the operation wire 72, and the grease 104 is efficiently applied to necessary portions around the operation wire 72.
  • the cover rubber 94 suppresses adhesion of the grease 104 to the finger of the worker, and the workability is improved.
  • the process of covering the cover rubber 94 can also be performed, and the workability is further improved.
  • Grease 104 may be applied along the existing area.
  • the application process includes the injection process and the grease application process, but the present disclosure is not limited to this method.
  • the present disclosure is not limited to this method. For example, when pressing grease from the outer surface side of the net using a cover rubber, if the grease is likely to adhere around the guide portion inside the angle ring, the above-mentioned grease attachment process of curving the angle ring connection body It is not necessary to provide it.
  • the shape of the angle ring 62 constituting the endoscope 10, the position and the shape of the pin 64, the position and the shape of the guide portion 70, and the like can be changed.
  • the guide portion 70 is provided on the inner peripheral side of the pin 64, but the present disclosure is not limited to this configuration, and the operation ring is inserted into the angle ring separately from the pin.
  • a guide may be provided.
  • the number of operation wires 72 can be changed.
  • the internal components 90, internal components 90 and angle rings 62, internal components 90 and guide portions 70, internal components 90 and mounting rings 102, internal components 90 and wires 72, and wires 72 are attached.
  • Grease 104 is also responsible for lubrication between the ring 102, the angle rings 62, the angle ring 62 and the pin 64, the angle ring 62 and the net 92, the pin 64 and the net 92, the strands of the net 92, and the net 92 and the cover rubber 94. It is possible.
  • Example of this indication was described, this indication is not limited at all to said Example, It can not be overemphasized that it can implement in a various aspect in the range which does not deviate from the summary of this indication.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Optics & Photonics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Engineering & Computer Science (AREA)
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  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Abstract

L'invention concerne une méthode d'assemblage d'un endoscope par l'application efficace de graisse, si nécessaire au voisinage d'un fil opératoire lors de l'assemblage de l'endoscope. Cette méthode d'assemblage d'un endoscope comprend : une étape de connexion consistant à connecter une pluralité d'anneaux d'angle 62 avec des broches 64 ; une étape de fixation consistant à faire passer des fils opératoires 72 à travers des parties de guidage 70 projetées dans des directions circonférentielles internes des anneaux d'angle 62 et à recouvrir les circonférences extérieures de la pluralité d'anneaux d'angle 62 avec un filet tubulaire 92 ; et une étape d'application consistant à pousser la graisse 104 radialement vers l'intérieur dans le filet 92 à partir de la surface externe de celui-ci et à appliquer la graisse 104 à au moins une partie des fils opératoires 72 positionnés à l'intérieur de la pluralité d'anneaux d'angle 62.
PCT/JP2018/030190 2017-09-25 2018-08-13 Méthode d'assemblage d'endoscope Ceased WO2019058812A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019543477A JP6780126B2 (ja) 2017-09-25 2018-08-13 内視鏡の組み立て方法

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JP2017-183769 2017-09-25
JP2017183769 2017-09-25

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WO2019058812A1 true WO2019058812A1 (fr) 2019-03-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024071241A1 (fr) * 2022-09-30 2024-04-04 株式会社重松製作所 Appareil respiratoire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141228A (en) * 1979-04-20 1980-11-05 Olympus Optical Co Flexible pipe for endoscope
JPS61122620A (ja) * 1984-11-20 1986-06-10 Olympus Optical Co Ltd 内視鏡
JPH05285090A (ja) * 1992-04-13 1993-11-02 Asahi Optical Co Ltd 内視鏡における湾曲部被覆チューブの装着方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141228A (en) * 1979-04-20 1980-11-05 Olympus Optical Co Flexible pipe for endoscope
JPS61122620A (ja) * 1984-11-20 1986-06-10 Olympus Optical Co Ltd 内視鏡
JPH05285090A (ja) * 1992-04-13 1993-11-02 Asahi Optical Co Ltd 内視鏡における湾曲部被覆チューブの装着方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024071241A1 (fr) * 2022-09-30 2024-04-04 株式会社重松製作所 Appareil respiratoire

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JPWO2019058812A1 (ja) 2020-03-26

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