Forming method of vertical table and endoscope

Abstract

The present invention provides a method for molding a vertical stand and an endoscope that can mold a vertical stand integrally with an operating wire with simple operation. The method for molding a vertical stand (36) is a method for integrally molding a vertical stand (32) disposed on a front end body (32) of an endoscope (10) and an operating wire (40), the method comprising: a step of passing the operating wire (40) through a cavity (106) formed by a first mold (102) and a second mold (104) that can be separated in a separation direction in a state where the separation direction is consistent with the wire axis direction of the operating wire (40); a step of injecting a molding material (108) that is a material for the vertical stand (36) into the cavity (106) to integrally mold the vertical stand (36) and the operating wire (40); and a step of separating the first mold (102) and the second mold (104) in the separation direction after molding the vertical stand (36).

Description

Technical Field

[0001] The present invention relates to a molding method of an erection table and an endoscope, and in particular to a molding method of an erection table formed by directly connecting the erection table and an endoscope having the molded erection table. Background Art

[0002] In an endoscope, various treatment instruments are introduced from a treatment instrument introduction port provided on an operating portion, and the treatment instruments are led out from a treatment instrument lead-out port opened at the front end portion of the insertion portion to the outside for treatment. For example, treatment instruments such as guide wires or contrast tubes are used in duodenoscopes. Treatment instruments such as puncture needles are used in ultrasonic endoscopes. Treatment instruments such as forceps or snares are used in other direct-view mirrors and oblique mirrors. In order to treat a desired position in a subject, such treatment instruments need to have their lead-out direction changed at the front end portion. Therefore, a stand for changing the lead-out direction of the treatment instrument is provided at the front end portion of the insertion portion. In addition, a treatment instrument erection mechanism for changing the posture of the erection stand between an upright position and a prone position is provided in the endoscope.

[0003] As a treatment instrument erection mechanism, there is a known wire pulling type (open type) mechanism in which the front end of the operating wire is directly mounted on the erection platform. This mechanism connects the base end of the operating wire to the operating rod of the operating part, and the operating rod pushes and pulls the operating wire to rotate the erection platform around the rotation axis, thereby changing the posture of the erection platform between the erection position and the lying position.

[0004] As a method of directly attaching the front end of the operating wire to the erection table, a method of attaching the erection table and the operating wire by brazing, welding, or riveting is adopted.

[0005] In addition, as a method for molding the erection platform, the following patent document 1 describes a method of integrally molding a forceps erection wire and a forceps erection platform. Patent document 2 describes fixing the front end of a traction and pressing member to the erection platform by soldering or the like. In addition, patent document 3 describes that when molding the treatment tool erection platform, a wire insertion path for inserting an operation wire is also integrally molded.

[0006] Previous technical literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 6-315459

[0009] Patent Document 2: International Publication No. 2016 / 27574

[0010] Patent Document 3: Japanese Patent Application Laid-Open No. 11-299728 Summary of the invention

[0011] Technical issues to be solved by the invention

[0012] In the forceps erection stand (erecting stand) described in Patent Document 1, the forceps erection wire (operating wire) is inserted into the erection stand from the side of the forceps erection stand. Since the insertion direction of the forceps erection wire is different from the axial direction of the forceps erection wire, the forceps erection wire needs to be bent during molding, which complicates the manufacturing process. In the erection stand (erecting stand) described in Patent Document 2, the traction and pressing component (operating wire) also needs to be bent.

[0013] In addition, in Patent Document 2, the traction and pressing member and the erection platform are fixed by soldering, rather than integrally forming the traction and pressing member and the erection platform. In the treatment instrument erection device described in Patent Document 3, the wire insertion passage formed on the treatment instrument erection platform is also formed by integral molding, rather than integrally forming the operation wire and the treatment instrument erection platform.

[0014] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for molding an erection table and an endoscope capable of molding an erection table integrally molded with an operation wire by a simple operation.

[0015] Means for solving technical problems

[0016] In order to achieve the purpose of the present invention, the molding method of the erection table involved in the present invention is a molding method of the erection table in which the erection table arranged at the front end body of the front end side of the insertion part of the endoscope is integrally molded with the operating wire, and the molding method of the erection table comprises: a process of passing the operating wire through a cavity formed by a first mold and a second mold in a state where a first mold and a second mold that can be separated in a separation direction overlap and the separation direction is consistent with the wire axis direction of the operating wire; a process of injecting a molding material that is filled with a material for the erection table into the cavity to integrally mold the erection table and the operating wire; and a process of separating the first mold and the second mold in the separation direction after molding the erection table.

[0017] In order to achieve the purpose of the present invention, the molding method of the erection table involved in the present invention is a molding method of the erection table in which the erection table arranged on the front end body of the front end side of the insertion part of the endoscope is integrally molded with the operating wire, and the molding method of the erection table comprises: a process of passing the operating wire through a cavity formed by the first mold and the second mold in a state in which a first mold and a second mold that can be separated in a separation direction are overlapped and a direction perpendicular to the separation direction is consistent with the line axis direction of the operating wire; a process of injecting a molding material that is filled with a material for the erection table into the cavity to integrally mold the erection table and the operating wire; and a process of separating the first mold and the second mold in the separation direction after molding the erection table.

[0018] In order to achieve the purpose of the present invention, the endoscope involved in the present invention comprises: an operating portion, which has an operating component; an insertion portion, which is arranged on the front end side of the operating portion; a front end body, which is arranged on the front end side of the insertion portion; an erection table, which is arranged on the front end body and is configured to rotate freely; and an operating wire, which is pushed and pulled according to the action of the operating component to rotate the erection table, and the erection table is an integrally molded body formed by integrating with the operating wire using a first mold and a second mold that can be separated in the direction of the wire axis of the operating wire.

[0019] Effects of the Invention

[0020] According to the present invention, the operation wire can be easily arranged in the cavity, and the erecting table after molding can be easily removed by separating the first mold and the second mold in the separation direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of an endoscope system including an endoscope.

[0022] Figure 2 This is a perspective view showing an enlarged view of the distal end portion of the endoscope.

[0023] Figure 3 yes Figure 2 A stereoscopic view of the front end body is shown.

[0024] Figure 4 yes Figure 2 A three-dimensional view of the cover shown.

[0025] Figure 5 It is a three-dimensional diagram of the erection platform and the operating line.

[0026] Figure 6 It is a figure explaining the molding method of the erection stand of the first embodiment.

[0027] Figure 7 It is a figure explaining the molding method of the erection stand of the first embodiment.

[0028] Figure 8 It is a figure explaining the molding method of the erection stand of the first embodiment.

[0029] Fig. 9 It is a figure explaining the molding method of the erection stand of the first embodiment.

[0030] Fig.10 This is a diagram of the stand viewed from the back.

[0031] Fig.11 This is a perspective view of a mold used in the molding method of the erecting stand according to the first embodiment.

[0032] Fig.12It is a diagram for explaining the molding method of the erection stand according to the second embodiment.

[0033] Fig.13 It is a diagram for explaining the molding method of the erection stand according to the second embodiment.

[0034] Fig.14 It is a diagram for explaining the molding method of the erection stand according to the second embodiment.

[0035] Fig.15 It is a side cross-sectional view of a mold used in the molding method of the erecting stand according to the third embodiment.

[0036] Fig.16 This is a schematic diagram illustrating the positional relationship between the separation position of the mold and the erection table.

[0037] Fig.17 This is an exploded view of a mold used in the molding method of the erecting stand according to the third embodiment.

[0038] Fig.18 This is a three-dimensional view of an erection stand formed by the erection stand forming method of the fourth embodiment.

[0039] Fig.19 It is a side cross-sectional view of a mold used in the molding method of the erecting stand according to the fourth embodiment.

[0040] Fig. 20 This is a schematic diagram illustrating the positional relationship between the separation position of the mold and the erection table. DETAILED DESCRIPTION

[0041] Hereinafter, a method for molding an erection table and an endoscope according to the present invention will be described with reference to the accompanying drawings.

[0042] Figure 1 The endoscope system 12 is a block diagram of an endoscope system including an erection table formed by the erection table forming method of the present invention. The endoscope system 12 includes an endoscope 10 , a processor device 14 , a light source device 16 , and a display 18 .

[0043] The endoscope 10 includes an operation section 22 provided with an upright operation rod 20 as an operation member, and an insertion section 24 provided on the distal end side of the operation section 22 and inserted into a subject.

[0044] The insertion portion 24 has a long axis Ax extending from the base end toward the front end, and includes a soft portion 26, a bending portion 28, and a front end portion 30 in order from the base end toward the front end. The detailed structure of the front end portion 30 will be described later, and first, the schematic structure of the front end portion 30 will be described.

[0045] Figure 2 30 is an enlarged perspective view of the front end portion 30. Figure 1 ) is a side-viewing endoscope used, for example, as a duodenoscope, Figure 2 The front end portion 30 has a structure in a side-view endoscope.

[0046] in addition, Figure 3 It is a perspective view of the front end portion body 32 constituting the front end portion 30 . Figure 4 3 is a perspective view of the cover body 34 constituting the front end portion 30. Figure 2 As shown, the front end portion 30 includes a front end portion main body 32 and a cover body 34. The cover body 34 is detachably mounted on the front end portion main body 32. The front end portion main body 32 is disposed in the insertion portion 24 (see Figure 1 ) on the front end side. A vertical stand 36 having a treatment instrument guide surface 36A described later is provided on the front end body 32. Figure 2 and Figure 4 , the state where the erecting platform 36 is located in the lying position is shown.

[0047] In addition, Figure 2 The endoscope 10 (see Figure 1 ) are provided with various built-in items inside the insertion portion 24. Specifically, a vertical stand 36 and a vertical operation wire 40 (hereinafter referred to as wire 40) and an air and water supply pipe 42 are provided for operating the front end of a treatment instrument (not shown) to change the direction of the front end of the treatment instrument led out from the front end body 32. The operation wire 40 is directly connected to the vertical stand 36, and when the vertical stand 36 is formed, the vertical stand 36 and the operation wire 40 are integrally formed. In addition, although in Figure 2 Although not shown in the figure, a treatment instrument channel leading to the front end body 32 and a channel for changing the bending portion 28 (see Figure 1 ) in the bending direction, a signal cable for sending image signals, and an optical waveguide for transmitting lighting light, etc.

[0048] In addition, a three-dimensional orthogonal coordinate system of three-axis directions (X-axis direction, Y-axis direction, and Z-axis direction) is used in this specification for description. That is, when observing the front end 30 from the operating part 22, when the direction of the treatment instrument (not shown) derived from the vertical stand 36 is set to the upper direction, the upper direction is set to the Z(+) direction, and the lower direction as the opposite direction is set to the Z(-) direction. In addition, the right direction at this time is set to the X(+) direction, and the left direction is set to the X(-) direction. In addition, the front direction (the direction of the front end side of the long axis Ax direction of the insertion part 24) at this time is set to the Y(+) direction, and the rear direction (the direction of the base end side of the long axis Ax direction of the insertion part 24) is set to the Y(-) direction. In addition, the Y-axis direction including the Y(+) direction and the Y(-) direction is parallel to the direction of the long axis Ax of the insertion part 24. The Z-axis direction is a direction orthogonal to the direction of the long axis Ax. The X-axis direction is a direction orthogonal to the Z-axis direction.

[0049] Return to Figure 1 The operation portion 22 is generally cylindrical in shape. The operation portion 22 includes an operation portion body 46 on which the vertical operation rod 20 is rotatably provided, and a grip portion 48 connected to the operation portion body 46. The base end portion of the insertion portion 24 is provided at the front end side of the grip portion 48 via a bending prevention tube 50. The grip portion 48 is a portion that is gripped by the operator when operating the endoscope 10.

[0050] The operation unit body 46 is provided with a universal cable 52. A light source connector 54 is provided at the front end of the universal cable 52. An electric connector 56 is branched from the light source connector 54. 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.

[0051] In addition, an air supply and water supply button 57 and a suction button 59 are arranged side by side on the operation unit main body 46. When the air supply and water supply button 57 is operated, the air supply and water supply button 59 is turned on. Figure 2 The air and water supply pipe 42 supplies air and water, and the air and water can be ejected from the air and water supply nozzle 58 provided in the front end body 32. Figure 1 The air supply and water supply button 57 is a two-stage operation. Through the one-stage operation, air is supplied to the air supply and water supply pipe 42. Through the two-stage operation, water is supplied to the air supply and water supply pipe 42.

[0052] In addition, when operating Figure 1 When the attraction button 59 is set at Figure 2 The treatment instrument outlet 60 of the distal end body 32 sucks body fluids such as blood through a treatment instrument channel (not shown).

[0053] like Figure 1As shown in FIG. 1 , a pair of angle knobs 62, 62 for performing bending operation on the bending portion 28 are disposed on the operation portion main body 46. The pair of angle knobs 62, 62 are provided to be rotatable on the same axis.

[0054] The erection operation rod 20 is provided to be rotatable coaxially with the angle knobs 62, 62. The erection operation rod 20 is rotated by the operator's hand holding the grip portion 48. When the erection operation rod 20 is rotated, Figure 2 The operation wire 40 is pushed and pulled according to the movement of the erection operation rod 20. By operating the operation wire 40, the posture of the erection stand 36 connected to the front end side of the operation wire 40 is changed. Figure 2 The device can be changed between a lying position shown and an upright position not shown.

[0055] like Figure 1 As shown, the grip portion 48 of the operation portion 22 has a treatment instrument introduction port 64 for introducing a treatment instrument. A treatment instrument (not shown) introduced from the treatment instrument introduction port 64 with the distal end as the leading end is inserted into a treatment instrument channel (not shown) and is led out from a treatment instrument lead-out port 60 provided in the distal end body 32 to the outside.

[0056] like Figure 1 As shown, the soft part 26 of the insertion part 24 has a spiral tube (not shown) formed by winding a thin metal strip plate having elasticity into a spiral shape. The soft part 26 is formed by covering the outside of the spiral tube with a cylindrical mesh body woven with metal wires, and covering the outer periphery of the mesh body with an outer skin made of resin.

[0057] The bending portion 28 of the insertion portion 24 has a structure formed by a plurality of angle rings (not shown) connected to each other so as to be rotatable. The bending portion 28 is formed by covering the outer periphery of the structure with a cylindrical mesh body woven from metal wires, and covering the outer periphery of the mesh body with a cylindrical outer skin made of rubber. From the bending portion 28 thus formed to the angle buttons 62, 62, for example, four angle wires (not shown) are arranged, and by the rotation operation of the angle buttons 62, 62, these angle wires are pushed and pulled, thereby bending the bending portion 28 up, down, left, and right.

[0058] The endoscope 10 of the embodiment is a side-viewing endoscope used as a duodenoscope, for example, 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 to perform a predetermined examination or treatment.

[0059] Examples of treatment instruments used in the endoscope 10 of the embodiment include biopsy forceps having a cup at the tip for collecting living tissue, EST (Endoscopic Sphincterotomy) knives, and angiography tubes.

[0060] Next, refer to Figure 2 , Figure 3 and Figure 4 The structure of the front end portion 30 will be described.

[0061] like Figure 2 As shown in FIG. 1 , the front end portion 30 includes a front end portion body 32 and a cover body 34 detachably mounted on the front end portion body 32. Figure 3 As shown, the front end body 32 has a partition wall 68 protruding in the Y(+) direction. By installing the cover body 34 on the front end body 32, the vertical stand storage space 66 is formed by the partition wall 68 of the front end body 32 and the wall portion 34B of the cover body 34. The vertical stand storage space 66 is arranged at the position of the partition wall 68 in the X(+) direction and the treatment instrument outlet 60 in the Y(+) direction. The front end body 32 is made of a corrosion-resistant metal material.

[0062] like Figure 2 and Figure 3 As shown, an illumination window 74 and an observation window 76 are provided 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 can observe the visual field area of ​​the opening of the erection table storage space 66 in the Z(+) direction.

[0063] The air supply and water supply nozzle 58 is provided on the front end portion body 32 facing the observation window 76. The observation window 76 is cleaned by the air and water ejected from the air supply and water supply nozzle 58.

[0064] like Figure 3 As shown in FIG. 1 , the partition wall 68 includes an optical system storage chamber 72 inside. The optical system storage chamber 72 accommodates an illumination unit (not shown) and an imaging unit (not shown). The illumination unit includes an illumination lens (not shown) disposed on the optical system storage chamber 72 side of the illumination window 74 and a light guide (not shown) disposed so that the front end thereof faces the illumination lens. The light guide is connected to the endoscope 10 (see FIG. 1 ). Figure 1 ) is provided to the universal cable 52 via the operation unit 22. The base end of the light guide is connected to 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 irradiated from the illumination window 74 to the field of view existing in the Z (+) direction.

[0065] The photographing unit includes a photographing optical system (not shown) disposed inside the observation window 76 and a CMOS (complementary metal oxide semiconductor) type or CCD (charge coupled device) type imaging element (not shown). The front end of a signal cable (not shown) is connected to the imaging element. The signal cable is connected from the endoscope 10 (refer to Figure 1) is provided on the universal cable 52 via the operation unit 22. The base end of the signal cable is connected to the electrical connector 56. When the electrical connector 56 is connected to the processor device 14, the image pickup signal of the subject image obtained by the imaging unit is sent to the processor device 14 via the signal cable. The image pickup signal is image-processed by the processor device 14 and then displayed on the display 18 as the subject image.

[0066] The distal end body 32 has a stopper 63 on the proximal side. The stopper 63 engages with a stopped portion provided on the proximal side surface of the contact member 37 described later. The distal end body 32 is provided with a through hole 61 for inserting the operation wire 40 (not shown).

[0067] like Figure 4 As shown, the cover body 34 has a wall portion 34B formed in a substantially cylindrical shape with the front end side closed. On a part of the outer peripheral surface of the cover body 34, a substantially rectangular opening window 34A is defined by the wall portion 34B. A bearing 34C extending in the Y (+) direction is formed inside the cover body 34. The bearing 34C has a plate shape having a height in the Z (+) direction. The cover body 34 is made of a material having elasticity, for example, a rubber material such as fluororubber or silicone rubber, or a resin material such as polysulfone or polycarbonate.

[0068] The rotating shaft 36B of the erection 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 erection stand 36 when the erection stand 36 is formed. Alternatively, the rotating shaft 36B may be provided by providing a through hole (not shown) in the erection stand 36 and inserting a rod-shaped member into the through hole.

[0069] As will be described later, the operation wire 40 is directly connected and mounted on the erecting stand 36. The operation wire 40 is mounted on the distal end side of the erecting stand 36, at a position adjacent to the treatment instrument guide surface 36A.

[0070] In this embodiment, the vertical platform 36 is installed on Figure 4 The cover body 34 shown is used as a single component with the erection stand 36. In addition, the operation wire 40 is connected to the erection stand 36.

[0071] The opening window 34A of the cover 34 opens in the Z(+) direction. That is, the opening direction of the opening window 34A of the cover 34 is perpendicular to the direction of the long axis Ax of the insertion portion and perpendicular to the axial direction (X-axis direction) of the rotation axis 36B.

[0072] The cover body 34 is provided with a contact part 37 integrally formed with the wall portion 34B. The contact part 37 is made of a resin material. The contact part 37 is arranged on the base end side (Y(-) direction side) of the opening window 34A. The contact part 37 protrudes toward the Y(+) direction side as a whole. The so-called integral molding means that the product (cover body 34 and contact part 37) is integrally molded at the same time as the parts are joined without using bonding or mechanical bonding.

[0073] When the treatment of the endoscope 10 is completed, the cover body 34 including the operation wire 40 and the erection base 36 is removed from the distal end body 32 and discarded as a disposable item, for example.

[0074] When the cover 34 is mounted on the front end body 32, as shown in FIG. Figure 2 As shown, the cover body 34 forms a vertical stand accommodating space 66, and the opening window 34A opens toward the Z(+) direction. The treatment instrument outlet 60 of the front end body 32 is connected to the opening window 34A via the vertical stand accommodating space 66. The abutment member 37 is located in the Z(+) direction relative to the treatment instrument outlet 60, and when the vertical stand 36 is in the vertical position, the abutment member 37 is set at a position opposite to the treatment instrument guide surface 36A.

[0075] (Forming method of vertical table)

[0076] Next, a method for forming the erecting stand will be described. Figure 5 The erection platform 36 is directly connected to the operation wire 40, and when the erection platform 36 is formed, the erection platform 36 and the operation wire 40 are formed as one piece.

[0077] <First Embodiment>

[0078] The method for forming the erection stand of the first embodiment will be described. The method for forming the erection stand of the first embodiment is a method for continuously forming the erection stand 36 .

[0079] Figures 6 to 10 1 is a diagram for explaining a method for forming a vertical stand according to a first embodiment. Figure 6 , Figure 7 , Figure 8 and Fig.10 It is a planar cross-sectional view cut at the position of the operation wire 40. In order to simplify the drawing, the structure inside the cavity 106 of the first mold 102 and the second mold 104 is omitted.

[0080] The molding of the erection stand 36 is performed using a mold 100 composed of a first mold 102 and a 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 the "separation direction A"). The second mold 104 can also be separated into a first part 104A and a second part 104B in the separation direction indicated by the arrow B (hereinafter referred to as the "separation direction B"). By overlapping the first mold 102 and the second mold 104, a cavity 106 corresponding to the erection stand 36 is formed therein. The first mold 102 has a through hole 110A for inserting the operation wire 40 into the cavity 106. In addition, 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 opposite to the through hole 110A of the first mold 102. The through hole 110B of the second mold 104 is formed by the groove of the first part 104A and the groove of the second part 104B.

[0081] The forming of the vertical platform 36 is as follows Figure 6 As shown, the first mold 102 and the second mold 104 are overlapped. The operating wire 40 passes through the through hole 110A provided in the first mold 102, passes through the cavity 106, and passes through the through hole 110B of the second mold 104. The operating wire 40 is configured to pass through the cavity 106 from the first mold 102 side and pass out from the second mold 104 side. At this time, the operating wire 40 and the mold 100 are configured in a state where the axial direction of the operating wire 40 is consistent with the separation direction A. In addition, "making the axial direction of the operating wire 40 consistent with the separation direction A" is not limited to the axial direction of the operating wire 40 being exactly the same as the separation direction A, and may also include a degree of deviation that allows the vertical table 36 to be removed by moving the vertical table 36 in the same direction as the separation direction A when the vertical table 36 is removed.

[0082] Then, if Figure 7 As shown, a molding material 108, which is a material for the erection stand 36, is injected into the cavity 106. As the molding material 108, a resin can be used, and the molten molten resin is filled into the cavity 106. As the resin, for example, PEEK (Poly Ether Ether Ketone) can be used. In addition, as the molding material 108, a metal can also be used, and the molten molten metal is filled into the cavity 106 by MIM (Metal Injection Molding).

[0083] When PEEK is used as the material of the erection table 36, since the molding temperature of the erection table 36 is between 350°C and 400°C, SUS (Stainless Steel: melting point of about 1400°C) is preferably used as the material of the operation wire 40. In addition, when metal is used as the material, since the molding temperature of the erection table 36 is between 1200°C and 1400°C, tungsten (melting point of about 3400°C) is preferably used as the material of the operation wire 40.

[0084] After the molding material 108 is filled into the cavity 106 , the molding material 108 is solidified by cooling, and the erecting stand 36 in which the operation wire 40 is arranged inside the erecting stand 36 is formed.

[0085] After forming the vertical table 36, as Figure 8 As shown, 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 component 104A and the second component 104B in the separation direction B. Since the separation direction A of the first mold 102 and the second mold 104 is consistent with the line axis direction of the operating wire 40, by moving the second mold 104 together with the erection table 36 in the line axis direction of the operating wire 40, the erection table 36 can be separated from the first mold 102 without bending the operating wire 40.

[0086] Since the erection stand 36 is moved together with the second mold 104 in the same direction as the separation direction A, the erection stand 36 can be separated from the first mold 102 while the first mold 102 is fixed. The erection stand 36 separated from the first mold 102 can be pulled out along the wire axis direction of the operation wire 40 between the first component 104A and the second component 104B.

[0087] After the erection table 36 is separated from the mold 100, as shown in FIG. Fig. 9 As shown, the mold 100 is overlapped again. After the erection table 36 is removed from the mold 100, the operation wire 40 is cut. The operation wire 40 is cut on the side of the treatment instrument guide surface 36A of the erection table 36 so that it can be connected with the Figure 1 The length of the erection operation rod 20 shown is connected. In addition, the operation wire 40 protruding from the back surface 36C side opposite to the treatment instrument guide surface 36A of the erection stand 36 is cut along the back surface 36C. Fig.10 36C is a diagram viewed from the back side 36C of the erection stand 36. On the back side 36C of the erection stand 36, an exposed portion 36E is formed by cutting off the protruding operation wire 40 so that the operation wire 40 is exposed. Figure 5 As shown, on the treatment instrument guide surface 36A side of the standing table 36, the operation wire 40 is directly connected via a connection portion 36D provided on the side of the treatment instrument guide surface 36A.

[0088] The stand 36 is pulled out, and the stacked mold 100 is returned to Figure 6 In the process, the molding material 108 for molding the vertical table 36 is filled into the cavity 106, and the vertical table 36 is continuously molded.

[0089] Fig.11 1 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 rotation axis 36B of the vertical stand 36. By setting the separation position of the first mold 102 and the second mold 104 to the center of the rotation axis 36B, the first mold 102 and the second mold 104 can be easily separated from the vertical stand 36 having the rotation axis 36B.

[0090] In addition, the separation position of the first mold 102 and the second mold 104 is not limited to the position passing through the center of the rotation axis 36B, and the center of the rotation axis 36B may be located on the second mold 104 side, and the mold 100 may be designed in such a manner that the rotation axis 36B is arranged on the second mold 104 side. Since the second mold 104 can be separated into the first component 104A and the second component 104B in the separation direction B, the rotation axis 36B can be pulled out from the second mold 104 by separating in the separation direction B.

[0091] In the above, the separation position of the first mold 102 and the second mold 104 in the case where the rotating shaft 36B and the erecting stand 36 are integrally molded is described, but the rotating shaft 36B may be provided as a separate component, and a hole for inserting the rotating shaft 36B may be provided on the erecting stand 36. In the case where a hole is provided on the erecting stand 36, an axis component is provided on the second mold 104 at a position corresponding to the hole of the erecting stand 36. Since the second mold 104 can be separated into the first component 104A and the second component 104B, the axis component can be pulled out by separating the second mold 104, so that a hole can be formed. In addition, the axis component for forming the hole may not be provided on the second mold 104, but may be arranged in the cavity 106 as a component separate from the first mold 102 and the second mold 104. In the case where the axis component for forming the hole is provided as a separate component, the separation position of the first mold 102 and the second mold 104 is not particularly limited.

[0092] As in the molding method of the erection table of the present embodiment, by making the wire axis direction of the operation wire 40 consistent with the separation direction A of the first mold 102 and the second mold 104, the erection table 36 and the second mold 104 can be pulled out in a state where the first mold 102 is fixed. In addition, by fixing the first mold 102, the molds can be easily overlapped. Furthermore, since the erection table 36 can be continuously molded in a state where the operation wire 40 always passes through the first mold 102, the positioning of the operation wire 40 can be easily performed. Therefore, the molding of the erection table 36 can be easily performed continuously.

[0093] Furthermore, since the treatment instrument guide surface 36A is formed in a concave shape with respect to the wire axis direction of the operation wire 40 , the treatment instrument guide surface 36A can be easily molded into a shape that matches the shape of the abutment member 37 .

[0094] <Second Embodiment>

[0095] The method for forming the erecting stand of the second embodiment is a method for forming the erecting stands piece by piece.

[0096] Figure 12 to Figure 14 4 is a diagram for explaining the molding method of the erection stand of the second embodiment, and is a planar cross-sectional view obtained by partially cutting along the operation line 40. The molding method of the erection stand of the second embodiment is different from the molding method of the erection stand of the first embodiment in that since it is not a continuous molding, although the first mold 202 and the second mold 204 are separated, the second mold 204 is not separated. In addition, in order to simplify the drawings, the structures in the cavities 206 of the first mold 202 and the second mold 204 are omitted.

[0097] The erection stand is formed using a mold 200 composed of a first mold 202 and a second mold 204. By overlapping the first mold 202 and the second mold 204, a cavity 206 corresponding to the erection stand 36 is formed therein. The first mold 202 has a through hole 210 for inserting the operation wire 40 into the cavity 206.

[0098] The forming of the erection platform 36 is first as follows Fig.12 As shown, the first mold 202 and the second mold 204 are overlapped. The operation wire 40 passes through the through hole 210 provided in the first mold 202, and the front end of the operation wire 40 is passed through and arranged in the cavity 206. At this time, the operation wire 40 is arranged in such a way that the wire axis direction is consistent with the separation direction A of the first mold 202 and the second mold 204.

[0099] Then, if Fig.13As shown, the molding material 108 that is the material for the erection platform 36 is injected into the cavity 206. As the molding material, the same material as that of the first embodiment can be used. After the molding material 108 is filled into the cavity 206, the molding material 108 is solidified by cooling, and the erection platform 36 with the operation wire 40 inserted therein is formed.

[0100] Finally, the first mold 202 and the second mold 204 are separated in the separation direction A, and the erection stand 36 is pulled out from the mold 200. Since the separation direction A of the first mold 202 and the second mold 204 is consistent with the axial direction of the operation wire 40, the erection stand 36 can be easily pulled out from the mold 200 by separating the first mold 202 and the second mold 204 in the separation direction A.

[0101] In this embodiment, the erection stand 36 and the second mold 204 can be separated from the first mold 202 by separating the second mold 204 in the separation direction A while the first mold 202 is fixed. The erection stand 36 can be pulled out in the separation direction A of the mold 200, and the operation wire 40 can also be pulled out from the mold 200.

[0102] In addition, regarding the separation position of the first mold 202 and the second mold 204, when the rotating shaft 36B is integrally formed on the vertical stand 36, the position passing through the center (axis center) of the rotating shaft 36B is set as the separation position. When the rotating shaft 36B is set as a separate component and a hole for inserting the rotating shaft 36B is provided, it is preferable to configure the shaft component for forming the hole as a separate component different from the first mold 202 and the second mold 204.

[0103] <Third Embodiment>

[0104] The molding method of the erection table of the third embodiment is different from the molding methods of the erection table of the first and second embodiments in that, in the method of continuously molding the erection table, the separation direction A of the first mold and the second mold is perpendicular to the line axis direction of the operating wire 40.

[0105] Fig.15 It is a side cross-sectional view of a mold used in the molding method of the erecting stand according to the third embodiment. Fig.16 This is a schematic diagram illustrating the positional relationship between the mold separation position and the vertical stand, and is a diagram viewed from the axis direction of the operating wire. Fig.16 In the figure, the vertical platform 36 formed in the mold 300 is represented by a transparent line (dashed line).

[0106] The mold 300 used in the molding method of the erection 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 relative to the wire axis direction of the operation wire 40. Fig.16 As shown, the mold 300 has a guide surface forming member 305 for forming the treatment tool guide surface 36A of the stand 36. By providing the guide surface forming member 305, the treatment tool guide surface 36A can be easily formed into a desired shape that easily guides the treatment tool or a shape that matches the shape of the abutment member 37.

[0107] In the molding of the erection stand 36, the first mold 302 and the second mold 304 are overlapped, and the guide surface forming member 305 for forming the treatment instrument guide surface 36A of the erection stand 36 is overlapped to form the cavity 306. Fig.16 As shown, the operation wire 40 is inserted between the first mold 302 and the second mold 304. That is, the operation wire 40 is inserted and arranged in the cavity 306 in a state that the direction perpendicular to the separation direction A of the first mold 302 and the second mold 304 is consistent with the wire axis direction of the operation wire 40. After the operation wire 40 is arranged in the cavity 306, the molding material is filled. After the molding material is filled, the molding material is solidified by cooling, and the vertical stand 36 in which the operation wire 40 is arranged is formed.

[0108] After forming the vertical platform 36, as Fig.17 As shown, the first mold 302 and the second mold 304 are separated in the separation direction A perpendicular to the axial direction of the operating wire 40, and the guide surface forming member 305 is slid in the direction parallel to the axial direction of the operating wire 40. The formed erecting table 36 can be pulled out from between the first mold 302 and the second mold 304 separated in the separation direction A.

[0109] After the erecting stage 36 is pulled out from the mold 300, the first mold 302, the second mold 304 and the guide surface forming member 305 are overlapped again. The mold 300 after overlapped is filled with molding material in the cavity 306 to continuously mold the erecting stage 36.

[0110] Similar to the molding method of the first embodiment, the operation wire 40 is cut on the treatment instrument guide surface 36A side to a length that allows connection to the erection operation rod 20. In addition, the operation wire 40 protruding from the back surface 36C side is cut along the back surface 36C.

[0111] like Fig.16As shown, in the mold 300 used in the molding method of the erection table 36 of the third embodiment, the first mold 302 and the second mold 304 are separated at the position of the operation wire 40 and the position of the rotation axis 36B. Thus, the first mold 302 and the second mold 304 can be separated in a direction perpendicular to the axial direction of the operation wire 40.

[0112] The rotating shaft 36B may be a separate member from the erecting stand 36. In this case, in order to form a hole in the erecting stand 36 through which the rotating shaft 36B is inserted, the hole is formed by placing a shaft member for forming the hole in the cavity 306.

[0113] In the third embodiment, when removing the formed erecting stage 36 from the mold 300, both the first mold 302 and the second mold 304 need to be moved in a direction perpendicular to the axial direction of the operating wire 40. Therefore, when the first mold 302 and the second mold 304 are overlapped, the operating wire 40 needs to be positioned.

[0114] <Fourth Embodiment>

[0115] Figures 18 to 20 It is a diagram for explaining a molding method of an erection stand according to a fourth embodiment. Fig.18 1 is a perspective view of the erection stand 136 formed by the erection stand forming method of the fourth embodiment. The erection stand forming method of the fourth embodiment is similar to the erection stand forming method of the third embodiment, and the erection stand 136 is formed in a state where the axis direction of the operation wire 40 is aligned with the direction perpendicular to the separation direction of the first mold 402 and the second mold 404. Figure 5 The illustrated stand 36 differs in that the treatment instrument guide surface 136A is a flat surface.

[0116] In the molding method of the erection stand of the fourth embodiment, since the treatment instrument guide surface 136A is not a concave curved portion but a flat surface, the erection stand 136 can be molded without providing the guide surface forming member 305 used in the molding method of the third embodiment. That is, in the molding method of the fourth embodiment, the mold 400 composed of two components, the first mold 402 and the second mold 404, can be used to mold the erection stand.

[0117] Fig.19 is a side sectional view of a mold used in a molding method of a vertical stand according to a fourth embodiment, Fig. 20 This is a schematic diagram illustrating the positional relationship between the mold separation position and the vertical stand, and is a diagram viewed from the axis direction of the operating wire. Fig. 20 In the figure, the vertical platform 136 formed in the mold 400 is represented by a transparent line (dashed line).

[0118] The first mold 402 and the second mold 404 are separated at the position of the operation wire 40 and the rotation axis 136B. Thus, the first mold 402 and the second mold 404 can be separated in a direction perpendicular to the axial direction of the operation wire 40. The portion corresponding to the treatment instrument guide surface 136A is preferably formed by either the first mold 402 or the second mold 404 so that no connection portion is formed on the treatment instrument guide surface 136A of the molded stand 136. Fig. 20 In the embodiment, the treatment instrument guide surface 136A is molded by the first mold 402. Since no connection portion is formed on the treatment instrument guide surface 136A, the treatment instrument led out from the treatment instrument lead-out port 60 can be smoothly guided.

[0119] Explanation of symbols

[0120] 10. Endoscope

[0121] 12 Endoscopic system

[0122] 14 Processor device

[0123] 16 Light source device

[0124] 18 Display

[0125] 20 Vertical operating lever

[0126] 22 Operation Department

[0127] 24 Insertion

[0128] 26 Soft Part

[0129] 28 Bend

[0130] 30 Front end

[0131] 32 Front end body

[0132] 34. Cover

[0133] 34A Opening Window

[0134] 34B Wall

[0135] 34C bearing

[0136] 36, 136 vertical platform

[0137] 36A, 136A Handling instrument guide surface

[0138] 36B Rotation axis

[0139] 36C Back

[0140] 36D Connection

[0141] 36E exposed part

[0142] 37 Abutment member

[0143] 40 Operating Line

[0144] 42 Gas and water supply pipes

[0145] 46 Operation unit body

[0146] 48 Handle

[0147] 50 Anti-bending pipe

[0148] 52 Universal Cable

[0149] 54 Light source connector

[0150] 56 Electrical connector

[0151] 57 Gas and water supply buttons

[0152] 58 Air and water supply nozzles

[0153] 59 Attraction Button

[0154] 60 Disposal equipment outlet

[0155] 61 Through Holes

[0156] 62 Corner Button

[0157] 63 stopper

[0158] 64 Disposal instrument introduction port

[0159] 66 vertical table storage space

[0160] 68 Next Door

[0161] 68A Upper surface

[0162] 72 Optical system storage room

[0163] 74 Lighting Window

[0164] 76 Observation window

[0165] 100, 200, 300, 400 molds

[0166] 102, 202, 302, 402 first mold

[0167] 104, 204, 304, 404 Second mold

[0168] 104A First Part

[0169] 104B Second part

[0170] 106, 206, 306 cavity

[0171] 108 Molding Materials

[0172] 110A, 110B, 210 through hole

[0173] 305 guide surface forming member

[0174] A, B separation direction

[0175] Ax Long axis of the insertion part

Claims

1. A method for molding an erection stand, wherein the erection stand disposed on a front end body provided on the front end side of an insertion portion of an endoscope is integrally molded with an operation wire, wherein: The forming method of the erecting platform comprises: A step of inserting the operating wire into a cavity formed by the first mold and the second mold in a state where a first mold and a second mold that can be separated in a separation direction are overlapped and the separation direction is consistent with the wire axis direction of the operating wire; A step of injecting a molding material, which is a material for the erecting table, into the cavity to integrally mold the erecting table and the operating wire; and After forming the erecting table, the first mold and the second mold are separated in the separation direction. In a state where the first mold is fixed, the erecting stand is separated from the first mold by separating the erecting stand together with the second mold in the separation direction.

2. The method for forming a vertical stand according to claim 1, wherein: The vertical stand has a treatment instrument guide surface and a back surface arranged on the opposite side of the treatment instrument guide surface. The method for molding the erecting table includes the step of cutting the operation wire protruding from the back side of the treatment instrument guide surface after separating the first mold and the second mold.

3. The method for forming a vertical stand according to claim 1 or 2, wherein: The molding material is molten resin.

4. The method for forming a vertical stand according to claim 1 or 2, wherein: The molding material is molten metal, The molten metal is filled into the cavity by metal powder injection molding.

5. The method for forming a vertical stand according to claim 4, wherein: The material of the operating wire is tungsten.

6. A method for molding an erection stand, wherein the erection stand disposed on a front end body provided on the front end side of an insertion portion of an endoscope is integrally molded with an operation wire, wherein: The forming method of the erecting platform comprises: A step of inserting the operating wire into a cavity formed by the first mold and the second mold in a state where a first mold and a second mold that can be separated in a separation direction are overlapped and a direction perpendicular to the separation direction is consistent with a wire axis direction of the operating wire; A step of injecting a molding material, which is a material for the erecting table, into the cavity to integrally mold the erecting table and the operating wire; and After the erecting stand is formed, the first mold and the second mold are separated in the separation direction.

7. An endoscope, wherein: have: an operating portion having an operating component; an insertion portion disposed at a front end side of the operation portion; A front end portion body, which is arranged at the front end side of the insertion portion; an erection platform, which is disposed on the front end body and is configured to rotate freely; as well as an operating wire that rotates the erecting table by being pushed or pulled according to the action of the operating member, The erection stand is an integrally molded body formed by integrally molding the operation wire with a first mold and a second mold that can be separated in the wire axis direction of the operation wire. In the process of separating the first mold and the second mold in a separation direction after the erection stand is formed, the erection stand is separated from the first mold by separating the erection stand together with the second mold in the separation direction while the first mold is fixed.

8. The endoscope according to claim 7, wherein: The vertical stand has a treatment instrument guide surface and a back surface arranged on the opposite side of the treatment instrument guide surface. A connection portion connected to the operation wire is provided on the treatment instrument guide surface side. The operation wire connected to the connection portion has an exposed portion that passes through the interior of the erecting base and is exposed on the back surface side.

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