WO2021033641A1 - 起立台の成形方法及び内視鏡 - Google Patents

起立台の成形方法及び内視鏡 Download PDF

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Publication number
WO2021033641A1
WO2021033641A1 PCT/JP2020/030873 JP2020030873W WO2021033641A1 WO 2021033641 A1 WO2021033641 A1 WO 2021033641A1 JP 2020030873 W JP2020030873 W JP 2020030873W WO 2021033641 A1 WO2021033641 A1 WO 2021033641A1
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WO
WIPO (PCT)
Prior art keywords
mold
operation wire
stand
molding
upright stand
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/JP2020/030873
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
原田　高志
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 JP2021540764A priority Critical patent/JPWO2021033641A1/ja
Priority to CN202080057802.XA priority patent/CN114222653B/zh
Publication of WO2021033641A1 publication Critical patent/WO2021033641A1/ja
Priority to US17/675,886 priority patent/US12318068B2/en
Anticipated expiration legal-status Critical
Priority to JP2024006548A priority patent/JP2024028539A/ja
Priority to JP2025174742A priority patent/JP2025188239A/ja
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/12—Casting in, on, or around objects which form part of the product for making objects, e.g. hinges, with parts which are movable relatively to one another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14549—Coating rod-like, wire-like or belt-like articles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00098—Deflecting means for inserted tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/0011—Manufacturing of endoscope parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
    • B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14008—Inserting articles into the mould
    • B29C45/14016—Intermittently feeding endless articles, e.g. transfer films, to the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14549—Coating rod-like, wire-like or belt-like articles
    • B29C45/14565—Coating rod-like, wire-like or belt-like articles at spaced locations, e.g. coaxial-cable wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B29C2045/14139—Positioning or centering articles in the mould positioning inserts having a part extending into a positioning cavity outside the mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor

Definitions

  • the present invention relates to a method for forming a stand and an endoscope, and more particularly to a method for forming a stand in which a stand and an operation wire are directly connected, and an endoscope having a molded stand.
  • various treatment tools are introduced from the treatment tool introduction port provided in the operation part, and this treatment tool is taken out from the treatment tool outlet opened at the tip of the insertion part and used for treatment.
  • a treatment tool such as a guide wire or a contrast tube is used.
  • Treatment tools such as puncture needles are used in ultrasonic endoscopes.
  • treatment tools such as forceps or snares are used.
  • Such a treatment tool needs to change the lead-out direction at the tip in order to treat a desired position in the subject. For this reason, a stand is provided at the tip of the insertion portion to change the direction in which the treatment tool is derived.
  • the endoscope is provided with a treatment tool standing mechanism that displaces the posture of the standing table between the standing position and the lying position.
  • a wire traction type (open type) mechanism in which the tip of an operation wire is directly attached to a standing stand is known.
  • the base end of the operation wire is connected to the operation lever provided in the operation unit, and the operation wire is pushed and pulled by the operation lever to rotate the standing table around the rotation axis, and the standing position and the lodging position are tilted.
  • the posture of the stand is changed between and.
  • Patent Document 1 describes that the forceps raising wire and the forceps raising stand are integrally molded.
  • Patent Document 2 describes that the tip end portion of the traction pressing member is fixed to the raising table by solder or the like.
  • Patent Document 3 describes that when the treatment tool standing table is formed, the wire insertion passage through which the operation wire is inserted is also formed by integral molding.
  • the forceps raising stand (standing stand) described in Patent Document 1 has a forceps raising wire (operation wire) inserted into the raising stand from the side surface of the forceps raising stand, and the insertion direction of the forceps raising wire and the forceps raising stand. Since the axial direction of the upper wire is different, it is necessary to bend the forceps raising wire at the time of molding, which complicates the manufacturing process. Also in the rising table (standing table) described in Patent Document 2, it is necessary to bend the traction pressing member (operating wire).
  • the towing pressing member and the raising table are fixed by solder, and the towing pressing member and the raising table are not integrally molded.
  • the wire insertion passage formed in the treatment tool standing stand is formed by integral molding or the like, and the operation wire and the treatment tool standing stand are not integrally formed. It was.
  • the present invention has been made in view of such circumstances, and provides a method for forming a stand and an endoscope capable of forming a stand that is integrally molded with an operation wire by a simple operation. With the goal.
  • the standing table arranged on the tip body provided on the tip side of the insertion portion of the endoscope is integrated with the operation wire.
  • This is a method of forming an upright stand, in which the first mold and the second mold that can be separated in the separation direction are overlapped with each other, and the separation direction and the wire axial direction of the operation wire are matched. Then, in the process of arranging the operation wire through the cavity formed by the first mold and the second mold, and injecting and filling the molding material which is the material of the upright stand into the cavity, the upright stand and the operation wire are filled. It has a step of integrally molding the first mold and a step of separating the first mold and the second mold in the separation direction after molding the upright stand.
  • the standing table arranged on the tip body provided on the tip side of the insertion portion of the endoscope is integrated with the operation wire.
  • This is a method of forming an upright stand, in which the first mold and the second mold that can be separated in the separation direction are overlapped with each other, and the direction perpendicular to the separation direction and the wire axial direction of the operation wire.
  • the process of arranging the operation wire through the cavity formed by the first mold and the second mold and the molding material, which is the material of the upright stand, are injected and filled into the cavity. It has a step of integrally molding the upright stand and the operation wire, and a step of separating the first mold and the second mold in the separation direction after molding the upright stand.
  • the endoscope according to the present invention has an operation portion having an operation member, an insertion portion provided on the tip side of the operation portion, and a tip provided on the tip side of the insertion portion.
  • the standing table is provided with a main body, a standing table provided on the tip main body and arranged rotatably, and an operation wire that rotates the standing table by being pushed and pulled according to the operation of the operating member. It is an integrally molded body integrally molded with the operation wire using a first mold and a second mold that can be separated in the wire axial direction of the operation wire.
  • the molded upright stand by facilitating the arrangement of the operation wire in the cavity and separating the first mold and the second mold in the separation direction, the molded upright stand can be easily taken out. Can be done.
  • FIG. 1st Embodiment It is a figure explaining the molding method of the standing stand of 1st Embodiment. It is a figure explaining the molding method of the standing stand of 1st Embodiment. It is a figure explaining the molding method of the standing stand of 1st Embodiment. It is a figure explaining the molding method of the standing stand of 1st Embodiment. It is a figure explaining the molding method of the standing stand of 1st Embodiment. It is a figure explaining the molding method of the standing stand of 1st Embodiment. It is the figure which looked at the stand from the back side.
  • FIG. 1 is a block diagram of an endoscope system provided with a stand formed by the method for forming a stand according to the present invention.
  • the endoscope system 12 includes an endoscope 10, a processor device 14, a light source device 16, and a display 18.
  • the endoscope 10 includes an operation unit 22 provided with a standing operation lever 20 which is an operation member, and an insertion unit 24 provided on the tip end side of the operation unit 22 and inserted into a subject.
  • the insertion portion 24 has a longitudinal axis Ax extending from the base end to the tip end, and includes a soft portion 26, a curved portion 28, and a tip end portion 30 in order from the base end to the tip end.
  • the detailed configuration of the tip portion 30 will be described later, but first, a schematic configuration of the tip portion 30 will be described.
  • FIG. 2 is an enlarged perspective view of the tip portion 30.
  • the endoscope 10 of the embodiment (see FIG. 1) is a lateral endoscope used as, for example, a duodenal endoscope, and the tip portion 30 of FIG. 2 has a configuration of a lateral endoscope. ..
  • FIG. 3 is a perspective view of the tip portion main body 32 constituting the tip portion 30.
  • FIG. 4 is a perspective view of the cap 34 constituting the tip portion 30.
  • the tip portion 30 has a tip portion main body 32 and a cap 34.
  • the cap 34 is detachably attached to the tip body 32.
  • the tip body 32 is provided on the tip side of the insertion portion 24 (see FIG. 1).
  • the tip body 32 is provided with an upright stand 36 having a treatment tool guide surface 36A, which will be described later. 2 and 4 show a state in which the standing table 36 is positioned in the lodging position.
  • FIG. 2 shows various contents arranged inside the insertion portion 24 of the endoscope 10 (see FIG. 1).
  • the tip portion of the treatment tool (not shown) is fed to the upright stand 36 and the operation wire 40 for performing an operation of changing the lead-out direction of the tip portion of the treatment tool derived from the tip portion main body 32.
  • An air supply tube 42 is provided.
  • the operation wire 40 is directly connected to the stand 36, and is an integrally molded body in which the stand 36 and the operation wire 40 are integrally molded when the stand 36 is molded.
  • an image signal is transmitted with a treatment tool channel leading to the tip body 32, an angle wire for performing an operation of changing the bending direction of the bending portion 28 (see FIG. 1), and an image signal.
  • Contents such as a signal cable and a light guide for transmitting illumination light are also provided.
  • a three-dimensional Cartesian coordinate system in the three-axis directions (X-axis direction, Y-axis direction, Z-axis direction) will be described. That is, when the tip portion 30 is viewed from the operating portion 22 and the direction in which the treatment tool (not shown) is derived by the standing table 36 is the upward direction, the upward direction is the Z (+) direction and the opposite direction. Let a certain downward direction be the Z (-) direction. Further, the right direction at that time is the X (+) direction, and the left direction is the X ( ⁇ ) direction.
  • the front direction (the direction toward the tip end side of the longitudinal axis Ax direction of the insertion portion 24) at that time is the Y (+) direction
  • the rear direction (the direction toward the proximal end side of the insertion portion 24 in the longitudinal axis Ax direction) is Y.
  • the direction is (-).
  • the Y-axis direction including the Y (+) direction and the Y ( ⁇ ) direction is parallel to the direction of the longitudinal axis Ax of the insertion portion 24.
  • the Z-axis direction is a direction orthogonal to the direction of the longitudinal axis Ax.
  • the X-axis direction is a direction orthogonal to the Z-axis direction.
  • the operation unit 22 is configured to have a substantially cylindrical shape as a whole.
  • the operation unit 22 has an operation unit main body 46 in which the standing operation lever 20 is rotatably provided, and a grip portion 48 connected to the operation unit main body 46.
  • the base end portion of the insertion portion 24 is provided on the tip end side of the grip portion 48 via the breakthrough pipe 50.
  • the grip portion 48 is a portion that is gripped by the operator when operating the endoscope 10.
  • the operation unit main body 46 is provided with a universal cable 52.
  • a light source connector 54 is provided on the tip end side of the universal cable 52.
  • An electric connector 56 is branched and provided in the light source connector 54. Then, the electric connector 56 is connected to the processor device 14, and the light source connector 54 is connected to the light source device 16.
  • the air supply / water supply button 57 and the suction button 59 are arranged side by side on the operation unit main body 46.
  • air and water are supplied to the air supply / water supply tube 42 of FIG. 2, and air and water can be ejected from the air supply / water supply nozzle 58 provided in the tip main body 32.
  • the air supply / water supply button 57 in FIG. 1 is a two-step operation. Air is supplied to the air supply / water supply tube 42 by a one-step operation. Water is supplied to the air supply water supply tube 42 by a two-step operation.
  • body fluid such as blood can be sucked from the treatment tool outlet 60 provided in the tip body 32 of FIG. 2 via the treatment tool channel (not shown). ..
  • a pair of angle knobs 62, 62 for bending the curved portion 28 are arranged on the operation unit main body 46.
  • the pair of angle knobs 62, 62 are provided coaxially and rotatably.
  • the standing operation lever 20 is rotatably provided coaxially with the angle knobs 62 and 62.
  • the standing operation lever 20 is rotationally operated by the operator who grips the grip portion 48.
  • the operation wire 40 of FIG. 2 is pushed and pulled according to the operation of the standing operation lever 20.
  • the posture of the upright stand 36 connected to the tip end side of the operation wire 40 is changed between the lodging position shown in FIG. 2 and the upright position (not shown).
  • the grip portion 48 of the operation portion 22 includes a treatment tool introduction port 64 into which the treatment tool is introduced.
  • the treatment tool (not shown) introduced from the treatment tool introduction port 64 with the tip portion at the head is inserted into the treatment tool channel (not shown) and is inserted from the treatment tool outlet 60 provided in the tip portion main body 32 to the outside. Derived.
  • the soft portion 26 of the insertion portion 24 has a spiral tube (not shown) formed by spirally winding a thin metal strip having elasticity.
  • the flexible portion 26 is formed by covering the outside of the spiral tube with a tubular net body woven with a metal wire, and covering the outer peripheral surface of the net body with an outer skin made of resin.
  • the curved portion 28 of the insertion portion 24 has a structure in which a plurality of angle rings (not shown) are rotatably connected to each other.
  • the curved portion 28 is formed by covering the outer periphery of the structure with a tubular net body woven with a metal wire, and covering the outer peripheral surface of the net body with a rubber tubular outer skin.
  • four angle wires are arranged from the curved portion 28 configured in this way to the angle knobs 62 and 62, and these angle wires are released by the rotation operation of the angle knobs 62 and 62.
  • the curved portion 28 is curved vertically and horizontally by the push-pull operation.
  • the endoscope 10 of the embodiment is a lateral endoscope used as, for example, a duodenal endoscope, and the insertion portion 24 is inserted into the subject through the oral cavity.
  • the insertion portion 24 is inserted from the esophagus through the stomach to the duodenum, and a predetermined examination or treatment is performed.
  • the treatment tools used in the endoscope 10 of the embodiment include biopsy forceps having a cup capable of collecting biological tissue at the tip, an EST (Endoscopic Sphincterotomy) knife, or an EST (endoscopic nipple incision) knife.
  • a treatment tool such as a contrast tube can be exemplified.
  • the tip portion 30 includes a tip portion main body 32 and a cap 34 that is detachably attached to the tip portion main body 32.
  • the tip main body 32 has a partition wall 68 projecting in the Y (+) direction.
  • the standing table accommodating space 66 is formed by the partition wall 68 of the tip body 34 and the wall portion 34B of the cap 34.
  • the standing table accommodating space 66 is arranged at a position in the X (+) direction of the partition wall 68 and in the Y (+) direction of the treatment tool outlet 60.
  • the tip body 32 is made of a metal material having corrosion resistance.
  • an illumination window 74 and an observation window 76 are arranged adjacent to each other in the Y direction on the upper surface 68A on the Z (+) side of the partition wall 68.
  • the observation window 76 makes it possible to observe the viewing area in the Z (+) direction in which the standing space 66 opens.
  • the air supply / water supply nozzle 58 is provided on the tip main body 32 toward the observation window 76.
  • the observation window 76 is cleaned by air and water ejected from the air supply / water supply nozzle 58.
  • the partition wall 68 includes an optical system accommodating chamber 72 inside.
  • the optical system accommodating chamber 72 accommodates a lighting unit (not shown) and a photographing unit (not shown).
  • the illumination unit includes an illumination lens (not shown) arranged on the side of the optical system accommodation chamber 72 of the illumination window 74, and a light guide (not shown) arranged so that the tip surface faces the illumination lens.
  • the light guide is arranged on the universal cable 52 from the insertion portion 24 of the endoscope 10 (see FIG. 1) via the operation portion 22.
  • the base end of the light guide is connected to the light source connector 54.
  • the light source connector 54 When the light source connector 54 is connected to the light source device 16, the irradiation light from the light source device 16 is transmitted to the illumination lens via the light guide.
  • the irradiation light is applied to the visual field region existing in the Z (+) direction from the illumination window 74.
  • the photographing unit includes a photographing optical system (not shown) arranged inside the observation window 76, and a CMOS (complementary metal oxide semiconductor) type or CCD (charge coupled device) type image sensor (not shown). ..
  • the tip of a signal cable (not shown) is connected to the image sensor.
  • the signal cable is arranged on the universal cable 52 from the insertion portion 24 of the endoscope 10 (see FIG. 1) via the operation portion 22.
  • the base end of the signal cable is connected to the electrical connector 56.
  • the electric connector 56 is connected to the processor device 14
  • the imaging signal of the subject image obtained by the photographing unit is transmitted to the processor device 14 via the signal cable.
  • the image pickup signal is image-processed by the processor device 14 and then displayed as a subject image on the display 18.
  • the tip body 32 has a stopper 63 on the base end side.
  • the stopper portion 63 engages with a stoppered portion provided on a surface on the base end side of the contact member 37, which will be described later.
  • the tip body 32 is provided with a through hole 61 for inserting an operation wire 40 (not shown).
  • the cap 34 includes a wall portion 34B formed in a substantially tubular shape with the tip side sealed.
  • a substantially rectangular opening window 34A is defined by a wall portion 34B on a part of the outer peripheral surface of the cap 34.
  • a bearing 34C extending in the Y (+) direction is formed inside the cap 34.
  • the bearing 34C has a plate shape having a height in the Z (+) direction.
  • the cap 34 is made of an elastic material, for example, a rubber material such as fluororubber or silicone rubber, polysulfone, or a resin material such as polycarbonate.
  • the rotating shaft 36B of the upright stand 36 is supported by a through hole (not shown) of the bearing 34C.
  • the rotating shaft 36B is a rod-shaped member having a length in the X-axis direction orthogonal to the bearing 34C.
  • the rotating shaft 36B is integrally formed with the upright stand 36 when the upright stand 36 is formed. Further, the rotating shaft 36B may be installed by providing a through hole (not shown) in the standing table 36 and inserting a rod-shaped member into the through hole.
  • the operation wire 40 is directly connected and attached to the upright stand 36 as described later.
  • the operation wire 40 is attached to the tip side of the upright stand 36 at a position adjacent to the treatment tool guide surface 36A.
  • the standing table 36 is attached to the cap 34 shown in FIG. 4, and is used as a whole as a cap 34 with the standing table 36.
  • the operation wire 40 is connected to the upright stand 36.
  • the opening window 34A of the cap 34 is opened in the Z (+) direction. That is, the opening direction of the opening window 34A of the cap 34 is a direction orthogonal to the direction of the longitudinal axis Ax of the insertion portion and orthogonal to the axial direction (X direction) of the rotating shaft 36B.
  • the cap 34 includes a contact member 37 integrally molded with the wall portion 34B.
  • the contact member 37 is made of a resin material.
  • the contact member 37 is arranged on the base end side (Y ( ⁇ ) direction side) of the opening window 34A.
  • the abutting member 37 projects toward the Y (+) direction as a whole.
  • the integral molding means that the product (cap 34 and the contact member 37) is integrally molded at the same time as the members are joined without using adhesion or mechanical joining.
  • the cap 34 including the operation wire 40 and the upright stand 36 is removed from the tip main body 32 and is discarded as a disposable, for example.
  • the cap 34 When the cap 34 is attached to the tip main body 32, as shown in FIG. 2, the cap 34 forms an upright stand accommodating space 66, and the opening window 34A is opened in the Z (+) direction.
  • the treatment tool outlet 60 of the tip main body 32 is communicated with the opening window 34A via the standing table accommodating space 66.
  • the abutting member 37 is located in the Z (+) direction with respect to the treatment tool outlet 60, and is provided at a position facing the treatment tool guide surface 36A when the standing table 36 is in the standing position.
  • FIG. 5 is a perspective view of a stand that is molded by the method of molding a stand of the present invention.
  • the operating wire 40 is directly connected to the standing table 36, and when the standing table 36 is formed, the standing table 36 and the operating wire 40 are integrally formed.
  • the molding method of the standing table of the first embodiment of the standing table 36 will be described.
  • the method for forming the upright table of the first embodiment is a method for continuously forming the upright table 36.
  • FIGS. 6, 7, 8 and 10 are views for explaining the molding method of the upright stand of the first embodiment, and FIGS. 6, 7, 8 and 10 are plan sectional views cut at the position of the operation wire 40. ..
  • the structure of the first mold 102 and the second mold 104 in the cavity 106 will be omitted for the sake of simplification of the drawings.
  • the upright stand 36 is formed by using the mold 100 including the first mold 102 and the second mold 104.
  • the first mold 102 and the second mold 104 can be separated in the separation direction indicated by the arrow A (hereinafter, referred to as “separation direction A”).
  • the second mold 104 can be further separated into the first member 104A and the second member 104B in the separation direction indicated by the arrow B (hereinafter, referred to as “separation direction B”).
  • a cavity 106 corresponding to the standing table 36 is formed inside the first mold 102 and the second mold 104.
  • the first mold 102 has a through hole 110A for inserting the operation wire 40 into the cavity 106.
  • the second mold 104 has a through hole 110B for inserting the operation wire 40 from the cavity 106 to the outside of the second mold 104 at a position facing the through hole 110A of the first mold 102.
  • the through hole 110B of the second mold 104 is formed by a groove of the first member 104A and a groove of the second member 104B.
  • the first mold 102 and the second mold 104 are overlapped with each other.
  • the operation wire 40 penetrates through the through hole 110A provided in the first mold 102, is arranged through the cavity 106, and penetrates through the through hole 110B of the second mold 104.
  • the operation wire 40 is arranged so as to pass through the cavity 106 from the first mold 102 side and come out to the second mold 104 side.
  • the operation wire 40 and the mold 100 are arranged in a state where the wire axial direction of the operation wire 40 and the separation direction A match.
  • matching the wire axial direction of the operation wire 40 with the separation direction A is not limited to the fact that the wire axial direction of the operation wire 40 and the separation direction A are completely the same, and when the standing table 36 is taken out.
  • a deviation that can be taken out by moving the standing table 36 in the same direction as the separation direction A may be included.
  • the molding material 108 which is the material of the upright stand 36, is injected and filled into the cavity 106.
  • a resin can be used as the molding material 108, and the molten resin is filled in the cavity 106.
  • the resin for example, PEEK (PolyEtherEtherKetone: polyetheretherketone) can be used.
  • a metal can be used as the molding material 108, and the molten metal can be filled in the cavity 106 by MIM (Metal Injection Molding).
  • the molding temperature of the standing table 36 is 350 ° C. or higher and 400 ° C. or lower. Therefore, SUS (Stainless Steel: melting point of about 1400 ° C.) may be used as the material of the operating wire 40. preferable.
  • SUS Stainless Steel: melting point of about 1400 ° C.
  • the molding temperature of the upright stand 36 is 1200 ° C. or higher and 1400 ° C. or lower. Therefore, it is preferable to use tungsten (melting point of about 3400 ° C.) as the material of the operation wire 40.
  • the cavity 106 After filling the cavity 106 with the molding material 108, the cavity 106 is cooled to solidify the molding material 108, and the operating wire 40 forms the standing table 36 arranged inside the standing table 36.
  • the first mold 102 and the second mold 104 are separated in the separation direction A, and the second mold 104 is separated into the first member 104A and the second member 104B. And separate in the separation direction B. Since the separation direction A of the first mold 102 and the second mold 104 coincides with the wire axial direction of the operation wire 40, the second mold is moved in the wire axial direction of the operation wire 40 together with the upright stand 36.
  • the stand 36 can be separated from the first mold 102 without bending the operation wire 40.
  • the standing table 36 Since the standing table 36 is moved together with the second mold 104 in the same direction as the separation direction A, the standing table 36 can be separated from the first mold 102 while the first mold 102 is fixed. .. The upright stand 36 separated from the first mold 102 can be pulled out along the wire axial direction of the operation wire 40 while being separated into the first member 104A and the second member 104B.
  • FIG. 10 is a view seen from the back surface 36C side of the standing table 36.
  • an exposed portion 36E is formed in which the operating wire 40 is exposed by cutting the protruding operating wire 40.
  • the operating wire 40 is directly connected to the treatment tool guide surface 36A side of the standing table 36 by a connecting portion 36D provided on the side portion of the treatment tool guide surface 36A.
  • the standing table 36 is extracted and the stacked molds 100 are returned to the process of FIG. 6, the molding material 108 for molding the standing table 36 is filled in the cavity 106, and the standing table 36 is continuously molded.
  • FIG. 11 is a perspective view of the mold 100.
  • the first mold 102 and the second mold 104 are preferably separated in the separation direction A at a position passing through the center (axis center) of the rotating shaft 36B of the standing table 36.
  • the separation position between the first mold 102 and the second mold 104 as the center of the rotating shaft 36B, the first mold 102 and the second mold 104 are opposed to the standing table 36 having the rotating shaft 36B. And can be easily separated.
  • the separation position between the first mold 102 and the second mold 104 is not limited to the position passing through the center of the rotating shaft 36B, and the center of the rotating shaft 36B may be on the second mold 104 side.
  • the mold 100 may be designed so that the rotating shaft 36B is arranged on the second mold 104 side. Since the second mold 104 can be separated into the first member 104A and the second member 104B in the separation direction B, the rotating shaft 36B can be pulled out from the second mold 104 by separating in the separation direction B. it can.
  • the separation position of the first mold 102 and the second mold 104 when the rotary shaft 36B is integrally molded with the upright stand 36 has been described, but the rotary shaft 36B is used as a separate member and the upright stand 36 is used.
  • a hole into which the rotating shaft 36B is inserted may be provided.
  • a shaft member is provided in the second mold 104 at a position corresponding to the hole in the upright stand 36. Since the second mold 104 can be separated into the first member 104A and the second member 104B, the shaft member can be pulled out and a hole can be formed by separating the second mold 104.
  • the shaft member for forming the hole may not be provided in the second mold 104, but may be arranged in the cavity 106 as a member separate from the first mold 102 and the second mold 104.
  • the shaft member for forming the hole is a separate member, the separation position between the first mold 102 and the second mold 104 is not particularly limited.
  • the first mold 102 was fixed by matching the wire axial direction of the operation wire 40 with the separation direction A of the first mold 102 and the second mold 104 as in the method of forming the upright stand of the present embodiment. In this state, the stand 36 and the second mold 104 can be pulled out. Further, by fixing the first mold 102, it is possible to easily superimpose the molds. Further, since the standing table 36 can be continuously formed with the operation wire 40 always passing through the first mold 102, the operation wire 40 can be easily aligned. Therefore, the continuous upright stand 36 can be easily formed.
  • the treatment tool guide surface 36A is formed in a concave shape with respect to the wire axial direction of the operation wire 40, it is easy to form the treatment tool guide surface 36A in a shape that matches the shape of the contact member 37. Can be done.
  • the method of molding the standing table of the second embodiment is a method of molding the standing table one by one.
  • FIGS. 12 to 14 are views for explaining the molding method of the upright stand of the second embodiment, and are plan sectional views cut at a portion of the operation wire 40. Since the method of molding the upright stand of the second embodiment is not continuous molding, the first mold 202 and the second mold 204 are separated, but the second mold 204 is not separated. It is different from the molding method of the stand. The structure of the first mold 202 and the second mold 204 in the cavity 106 will be omitted for the sake of simplification of the drawings.
  • Molding of the standing table is performed using a mold 200 including a first mold 202 and a second mold 204.
  • a cavity 206 corresponding to the standing table 36 is formed inside the first mold 202 and the second mold 204.
  • the second mold 202 has a through hole 210 for inserting the operation wire 40 into the cavity 206.
  • the first mold 202 and the second mold 204 are overlapped with each other.
  • the operation wire 40 penetrates through the through hole 210 provided in the first mold 202, and the tip of the operation wire 40 is penetratingly arranged in the cavity 206. At this time, they are arranged so that the wire axial direction of the operation wire 40 and the separation direction A of the first mold 202 and the second mold 204 coincide with each other.
  • the molding material 108 which is the material of the upright stand 36, is injected and filled into the cavity 206.
  • the molding material the same material as the material of the first embodiment can be used.
  • first mold 202 and the second mold 204 are separated in the separation direction A, and the standing table 36 is pulled out from the mold 200. Since the separation direction A of the first mold 202 and the second mold 204 coincides with the axial direction of the operation wire 40, the first mold 202 and the second mold 204 are separated in the separation direction A. Then, the stand 36 can be easily pulled out from the mold 200.
  • the upright stand 36 and the second mold 204 are separated from the first mold 202 by separating the second mold 204 in the separation direction A while the first mold 202 is fixed. be able to.
  • the operation wire 40 can also be pulled out from the mold 200.
  • the separation position of the first mold 202 and the second mold 204 is set to a position passing through the center (axis center) of the rotary shaft 36B when the rotary shaft 36B is integrally molded on the upright stand 36. ..
  • a shaft member for forming the hole may be arranged as a separate member separately from the first mold 202 and the second mold 204. preferable.
  • the separation direction A of the first mold and the second mold is perpendicular to the wire axial direction of the operation wire 40. The point that it is a direction is different from the molding method of the standing table of the first embodiment and the second embodiment.
  • FIG. 15 is a side sectional view of a mold used in the method for molding the upright stand of the third embodiment.
  • FIG. 16 is a schematic view for explaining the positional relationship between the separation position of the mold and the standing table, and is a view seen from the wire axial direction of the operation wire.
  • the standing table 36 formed in the mold 300 is shown by a transmission line (broken line).
  • the mold 300 used in the method for forming the upright stand of the third embodiment is composed of a first mold 302 and a second mold 304.
  • the first mold 302 and the second mold 304 can be separated in the separation direction A with respect to the wire axial direction of the operation wire 40.
  • the mold 300 has a guide surface forming member 305 for forming the treatment tool guide surface 36A of the standing table 36.
  • the first mold 302 and the second mold 304 are overlapped, and further, the guide surface forming member 305 for forming the treatment tool guide surface 36A of the upright base 36 is overlapped, and the cavity 306 is formed.
  • the operation wire 40 is inserted between the first mold 302 and the second mold 304. That is, the first mold 302 and the second mold 304 are inserted and arranged in the cavity 306 in a state where the direction perpendicular to the separation direction A and the wire axial direction of the operation wire 40 coincide with each other.
  • the molding material is filled. After filling the molding material, it is cooled to solidify the molding material and form an upright stand 36 in which the operation wire 40 is arranged.
  • the first mold 302 and the second mold 304 are separated into a separation direction A perpendicular to the axial direction of the operation wire 40, and the guide surface forming member 305. Is slid in a direction parallel to the axial direction of the operation wire 40.
  • the molded upright stand 36 can be extracted from between the first mold 302 and the second mold 304 separated in the separation direction A.
  • the first mold 302, the second mold 304, and the guide surface forming member 305 are overlapped again.
  • the forming material is filled in the cavity 306, and the standing table 36 is continuously formed.
  • the operation wire 40 is cut at a length that can be connected to the standing operation lever 20 on the treatment tool guide surface 36A side, as in the molding method of the first embodiment. Further, the operation wire 40 protruding from the back surface 36C side is cut along the back surface 36C.
  • the first mold 302 and the second mold 304 are the positions of the operation wires 40 and the rotation shafts as shown in FIG. Separate at position 36B.
  • the first mold 302 and the second mold 304 can be separated in the direction perpendicular to the axial direction of the operation wire 40.
  • the rotating shaft 36B can be a separate member from the standing table 36.
  • the hole is formed by arranging a shaft member for forming the hole in the cavity 306.
  • both the molds of the first mold 302 and the second mold 304 are oriented in the direction perpendicular to the axial direction of the operation wire 40. Need to be moved to. Therefore, it is necessary to position the operation wire 40 when the first mold 302 and the second mold 304 are overlapped with each other.
  • FIG. 18 is a perspective view of the standing table 136 formed by the method for forming the standing table according to the fourth embodiment. Similar to the method for forming the upright table of the third embodiment, the method for forming the upright table of the fourth embodiment is also the operation wire in a direction perpendicular to the separation direction of the first mold 402 and the second mold 404.
  • the standing table 136 is formed in a state where the wire axial directions of 40 are matched. Further, the standing table 136 formed by the method of forming the standing table of the fourth embodiment is different from the standing table 36 shown in FIG. 5 in that the treatment tool guide surface 136A is flat.
  • the stand 136 can be molded. That is, in the molding method of the fourth embodiment, the stand can be molded by using the mold 400 composed of two members, the first mold 402 and the second mold 404.
  • FIG. 19 is a side sectional view of a mold used in the method for forming an upright stand according to a fourth embodiment
  • FIG. 20 is a schematic view illustrating a positional relationship between a separation position of the mold and the upright stand, and is operated. It is a figure seen from the wire axial direction of a wire.
  • the upright stand 136 formed in the mold 400 is shown by a transmission line (broken line).
  • the separation position of the first mold 402 and the second mold 404 is separated at the positions of the operation wire 40 and the rotating shaft 136B. As a result, the first mold 402 and the second mold 404 can be separated in the direction perpendicular to the axial direction of the operation wire 40.
  • the portion corresponding to the treatment tool guide surface 136A is molded by either the first mold 402 or the 404 mold so that a connecting portion is not formed on the treatment tool guide surface 136A of the upright stand 136 to be molded. Is preferable.
  • the treatment tool guide surface 136A is formed by the first mold 402. By not forming a connecting portion on the treatment tool guide surface 136A, the treatment tool led out from the treatment tool outlet 60 can be smoothly guided.

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US17/675,886 US12318068B2 (en) 2019-08-22 2022-02-18 Method of molding elevator and endoscope
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JP2025188239A (ja) 2025-12-25
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CN114222653A (zh) 2022-03-22
CN114222653B (zh) 2025-03-04

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