Balloon installation fixture

Abstract

An object of the present invention is to provide a balloon mounting jig capable of reducing the working burden when mounting a balloon on an insertion portion of an endoscope. A balloon mounting jig (100) mounts a balloon (60) having a first cylindrical portion (60A), a second cylindrical portion (60B), and a balloon body (60C) on an insertion portion (12) of an endoscope (10) or an insertion assisting tool. The balloon mounting jig (100) includes: a main body portion (102) formed in a hollow cylindrical shape and capable of being folded into a flat shape, and having a first opening (104) and a second opening (106); and a pair of guiding pieces (108a, 108b) opposed to each other, provided at the second opening portion (106). In the balloon mounting jig (100), a sliding surface (120) on which the outer peripheral surface of the insertion portion (12) or the insertion assisting tool can slide is provided on the inner surfaces of the main body portion (102) and the pair of guiding pieces (108a, 108b).

Description

Technical Field

[0001] The present invention relates to a balloon mounting jig, and more particularly to a balloon mounting jig for mounting a balloon on an insertion portion of an endoscope or serving as a guiding member when the insertion portion is inserted into a body cavity. Background Art

[0002] In an endoscope device, balloons that expand and contract are used for various purposes. For example, in an endoscope device for observing deep digestive tracts such as the small intestine or large intestine, a balloon that can expand and contract is mounted on the insertion portion of the endoscope, and by expanding the balloon, the insertion portion of the endoscope can be fixed in the body.

[0003] Such a balloon is made of an elastic body such as rubber, and its end portion is formed into a cylindrical shape having a diameter smaller than the outer diameter of the object to be mounted (the insertion portion of the endoscope) in a natural state. Moreover, when mounting the balloon, while expanding the diameter of the end portion of the balloon, it is sleeved on the object to be mounted, and then a wire is wound from above the end portion of the balloon or a rubber band is externally fitted, thereby fixing the end portion of the balloon to the object to be mounted.

[0004] However, the work of expanding the diameter of the end portion of the balloon while sleeving it on the object to be mounted is very cumbersome, and there is a problem that the mounting work takes a lot of labor and time. For example, Patent Document 1 below discloses a balloon mounting jig that includes a first guiding piece and a second guiding piece inserted into cylindrical portions provided at both ends of a balloon body. This balloon mounting jig inserts the insertion portion of the endoscope between the first guiding piece and the second guiding piece to insert the endoscope into the cylindrical portion of the balloon.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2009-11656 Summary of the Invention

[0008] Technical Problem to be Solved by the Invention

[0009] However, the mounting jig described in Patent Document 1 has the following problems: in a state where the cylindrical portion of the balloon is covered on the first guiding piece and the second guiding piece, when holding the first guiding piece and the second guiding piece and moving the balloon on the insertion portion, due to the frictional force between the insertion portion and the balloon, the balloon is dragged and the balloon is likely to be wrinkled. Also, due to the tension of the balloon, there is a problem that it is difficult to move the first guiding piece and the second guiding piece. Moreover, when pulling out the first guiding piece and the second guiding piece from the balloon after moving the balloon to a specified position on the insertion portion, there is a problem that the position of the balloon is likely to shift.

[0010] The present invention has been completed in view of such circumstances, and an object thereof is to provide a balloon mounting jig capable of reducing the work burden of mounting a balloon on an insertion portion of an endoscope.

[0011] Means for Solving the Technical Problem

[0012] To achieve the object of the present invention, the balloon mounting jig according to the present invention is used to mount a balloon having a balloon body, a first cylindrical portion, and a second cylindrical portion on an insertion portion of an endoscope or on an insertion assisting tool that assists the insertion portion of the endoscope into a body cavity. The first cylindrical portion is provided at one end of the balloon body, and the second cylindrical portion is provided at the other end of the first cylindrical portion on the opposite side of the balloon body. The balloon mounting jig includes: a main body portion formed in a hollow cylindrical shape and foldable into a flat shape, having a first opening at one end and a second opening at the other end; and a pair of opposing guide pieces extending from the second opening toward the side opposite to the side where the first opening is provided. In the balloon mounting jig, a sliding surface on which the outer peripheral surface of the insertion portion or the insertion assisting tool can slide is provided on the inner surfaces of the main body portion and the pair of guide pieces.

[0013] In one embodiment of the present invention, it is preferable that the sliding surface is at least the region where the insertion portion or the insertion assisting tool contacts the main body portion and the pair of guide pieces.

[0014] In one embodiment of the present invention, it is preferable that the sliding surface is the entire inner surface of the main body portion and the pair of guide pieces.

[0015] In one embodiment of the present invention, it is preferable that the friction coefficient of the sliding surface is smaller than the friction coefficient of the outer surfaces of the main body portion and the pair of guide pieces.

[0016] In one embodiment of the present invention, it is preferable that the sliding surface is a corrugated uneven surface.

[0017] In one embodiment of the present invention, it is preferable that the sliding surface has a coating made of a plastic material.

[0018] In one embodiment of the present invention, it is preferable that the pair of guide pieces include: a high-friction portion provided on the outer surface of the guide piece on the second opening side, and a low-friction portion provided on the outer surface of the front end side of the guide piece and having a friction coefficient smaller than that of the high-friction portion.

[0019] In one embodiment of the present invention, it is preferable that the high-friction portion has a thin sheet with a smooth surface or a coating with adhesiveness.

[0020] In one embodiment of the present invention, it is preferable that the pair of guide pieces have a narrow-width portion provided on the front end side of the guide piece and a wide-width portion provided on the second opening side of the guide piece and wider than the narrow-width portion, and the sum of the widths of the wide-width portions of the pair of guide pieces is equal to or less than the length of the outer periphery of the insertion portion or the insertion assisting tool.

[0021] In order to achieve the object of the present invention, the balloon mounting jig according to the present invention is used to mount a balloon having a balloon body, a first cylindrical portion, and a second cylindrical portion on an insertion portion of an endoscope or an insertion assisting tool that assists the insertion portion of the endoscope into a body cavity. The first cylindrical portion is provided at one end of the balloon body, and the second cylindrical portion is provided at the other end of the first cylindrical portion on the opposite side of the balloon body. The balloon mounting jig includes: a main body portion formed in a hollow cylindrical shape and capable of being folded into a flat shape, having a first opening at one end and a second opening at the other end; a pair of opposing guide pieces extending from the second opening toward the side opposite to the side where the first opening is provided; and a narrow-width portion provided at the front end side of the guide pieces of the pair of guide pieces and a wide-width portion wider than the narrow-width portion on the second opening side. The sum of the widths of the wide-width portions of the pair of guide pieces is equal to or less than the outer peripheral length of the insertion portion or the insertion assisting tool.

[0022] In one embodiment of the present invention, it is preferable that the materials of the main body portion and the pair of guide pieces are resin or paper.

[0023] Advantages of the Invention

[0024] According to the balloon mounting jig of the present invention, it is possible to easily move the balloon mounting jig relative to the insertion portion, easily remove the balloon mounting jig from the endoscope on which the balloon is mounted, and easily move the balloon mounting jig integrally with the balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a system configuration diagram of an endoscope device using a balloon.

[0026] Figure 2 It is a perspective view showing the front end portion of the insertion portion of the endoscope.

[0027] Figure 3 It is a top view of the balloon mounting jig.

[0028] Figure 4 It is a perspective view of a state in which the first opening and the second opening of the main body portion are opened.

[0029] Figure 5 It is a perspective view of a state in which the main body portion is folded.

[0030] Figure 6 It is a plan view of a sheet for forming the balloon mounting jig.

[0031] Figure 7 It is a diagram for explaining a state in which a balloon is mounted on the balloon mounting jig.

[0032] Figure 8 It is a perspective view of a storage container.

[0033] Figure 9 It is a top view of the removed cover part.

[0034] Figure 10 It is a cross-sectional view of a balloon with an attachment jig accommodated therein.

[0035] Figure 11 It is a view for explaining a method of attaching a balloon to the insertion part.

[0036] Figure 12 It is a view for explaining a method of attaching a balloon to the insertion part.

[0037] Figure 13 It is a view for explaining a method of attaching a balloon to the insertion part.

[0038] Figure 14 It is a view for explaining a method of attaching a balloon to the insertion part.

[0039] Figure 15 It is a view for explaining a method of attaching a balloon to the insertion part.

[0040] Figure 16 It is a view for explaining a method of attaching a balloon to the insertion part.

[0041] Figure 17 It is a view for explaining a method of attaching a balloon to the insertion part. Detailed implementation mode

[0042] Hereinafter, the balloon attachment jig according to the present invention will be described with reference to the accompanying drawings.

[0043] Figure 1 It is a system configuration diagram showing an example of an endoscope using a balloon attached with the balloon attachment jig according to the present invention. As Figure 1 shown, the endoscope device mainly includes an endoscope 10, a balloon 60, and a balloon control device 70.

[0044] The endoscope 10 includes an operation part 14 and an insertion part 12 that is connected to the operation part 14 and inserted into the body. A general-purpose cord 16 is connected to the operation part 14, and an LG connector 18 is provided at the front end of the general-purpose cord 16. The LG connector 18 is detachably connected to the light source device 20, and thereby illumination light is sent to an illumination window (not shown) provided at the front end of the insertion part 12. Further, an electrical connector 24 is connected to the LG connector 18 via a cable 22, and the electrical connector 24 is detachably connected to the processor 26.

[0045] An air supply / water supply button 28, a suction button 30, a shutter button 32, and a function switching button 34 are provided side by side on the operation part 14, and a pair of angulation knobs 36, 36 are provided.

[0046] The insertion portion 12 is composed of a flexible portion 40, a bending portion 42, and a distal end portion 44 in this order from the operation portion 14 side. The flexible portion 40 is formed by sleeving a mesh on the outer periphery of a metal plate wound in a spiral shape and covering its outer periphery, and has sufficient flexibility.

[0047] The bending portion 42 is configured to be remotely bent by rotating the bending angle knobs 36, 36 of the operation portion 14. For example, the bending portion 42 is rotatably connected to a plurality of cylindrical joints by pins, and a plurality of operation wires are inserted through the inside of the joints and guided to the pins. Moreover, by pushing and pulling the operation wires, the joints rotate relative to each other, so that the bending portion 42 is bent. By bending the bending portion 42, the distal end portion 44 can be directed in a desired direction.

[0048] As Figure 2 shown, an observation window 52, illumination windows 54, 54, a gas supply / water supply nozzle 56, and a forceps opening 58 are provided on the distal end face of the distal end portion 44. An observation optical system and an imaging element such as a CMOS (Complementary Metal Oxide Semiconductor) or a CCD (Charge Coupled Device) are disposed behind the observation window 52, and a signal cable is connected to the substrate that supports the imaging element. The signal cable is inserted through the insertion portion 12, the operation portion 14, the general cord 16, etc. and extends to the electrical connector 24 and is connected to the processor 26. Therefore, the observation image read through the observation window 52 is imaged on the light receiving surface of the imaging element and converted into an electrical signal, and this electrical signal is output to the processor 26 via the signal cable and converted into a video signal. Thus, the observation image is displayed on the monitor 50 connected to the processor 26.

[0049] An illumination optical system and an output end of a light guide member (not shown) are disposed behind the illumination window 54. The light guide member is inserted through the insertion portion 12, the operation portion 14, and the general cord 16, and its incident end is disposed in the LG connector 18. Therefore, by connecting the LG connector 18 to the light source device 20, the illumination light irradiated from the light source device 20 is transmitted to the illumination optical system via the light guide member and irradiated forward from the illumination window 54.

[0050] The gas supply / water supply nozzle 56 provided at the distal end portion 44 communicates with a valve (not shown) operated by the gas supply / water supply button 28. This valve communicates with the gas supply / water supply connector 48 provided in the LG connector 18. A gas supply / water supply mechanism (not shown) is connected to the gas supply / water supply connector 48, and it supplies air and water. Therefore, by operating the gas supply / water supply button 28, air or water is jetted from the gas supply / water supply nozzle 56 toward the observation window 52.

[0051] The forceps mouth 58 provided at the front end portion 44 communicates with the forceps insertion portion 46. Therefore, by inserting a treatment tool such as forceps from the forceps insertion portion 46, the treatment tool can be led out from the forceps mouth 58. Further, the forceps mouth 58 communicates with a valve (not shown) operated by the suction button 30, and this valve is connected to the suction connector 49 of the LG connector 18. Therefore, by connecting a suction mechanism (not shown) to the suction connector 49 and operating it with the suction button 30, it is possible to suck a lesion part or the like from the forceps mouth 58.

[0052] A balloon 60 is detachably attached to the outer periphery of the insertion portion 12 of the endoscope 10. The balloon 60 is made of an elastic material such as silicone rubber. The balloon 60 has a first cylindrical portion 60A provided at one end, a second cylindrical portion 60B provided at the other end, and a balloon main body 60C provided between the first cylindrical portion 60A and the second cylindrical portion 60B. The first cylindrical portion 60A and the second cylindrical portion 60B are formed in a substantially cylindrical shape that is reduced with respect to the balloon main body 60C.

[0053] The balloon 60 is disposed at a predetermined mounting position (for example, from the front end portion 44 to the bending portion 42) by inserting and passing through the insertion portion 12. The first cylindrical portion 60A and the second cylindrical portion 60B are formed with an inner diameter smaller than the outer diameter of the insertion portion 12 of the endoscope 10 in a natural state. When the balloon 60 is attached to the insertion portion 12, the elastic force of the first cylindrical portion 60A and the elastic force of the second cylindrical portion 60B act toward the radially inner side of the insertion portion 12. By the elastic force, the balloon 60 is held at a predetermined position of the insertion portion 12.

[0054] A rubber band as a first balloon fixing member 61 in a cylindrical shape is fitted on the outer periphery of the first cylindrical portion 60A, and a rubber band as a second balloon fixing member 62 in a cylindrical shape is fitted on the outer periphery of the second cylindrical portion 60B. The balloon 60 is fixed to the insertion portion 12 by the first balloon fixing member 61 and the second balloon fixing member 62. The balloon 60 is attached using the balloon attachment jig of the present invention. The description of the balloon attachment jig will be given later.

[0055] An air vent hole 64 is formed at the balloon mounting position of the insertion portion 12, and this air vent hole 64 communicates with Figure 1 the balloon air supply port 38 of the operation portion 14 shown. A Figure 1 hose 80 is connected to the balloon air supply port 38, and a balloon control device 70 is connected via this hose 80. The balloon control device 70 is a device that supplies and sucks a fluid such as air to and from the balloon 60. By supplying and sucking a fluid (for example, air) from this balloon control device 70, it is possible to supply and suck air to and from the balloon 60. The balloon 60 expands into a substantially spherical shape by supplying air, and adheres to the outer surface of the insertion portion 12 by sucking air.

[0056] As Figure 1As shown, the balloon control device 70 mainly consists of a device main body 72 and a remote control manual switch 74. On the front surface of the device main body 72, a power switch SW1, a stop switch SW2, and a pressure display unit 76 are provided. The pressure display unit 76 is a panel that displays the pressure value of the balloon 60, and when an abnormality such as balloon breakage occurs, an error code is displayed on the pressure display unit 76.

[0057] A hose 80 for supplying air to and sucking air from the balloon 60 is connected to the front surface of the device main body 72. A backflow prevention unit 82 for preventing the backflow of body fluid when the balloon 60 breaks is provided at the connection part between the hose 80 and the device main body 72. The backflow prevention unit 82 is constituted by assembling a gas-liquid separation filter inside a hollow disc-shaped outer shell (not shown) that is detachably mounted on the device main body 72, and the filter prevents liquid from flowing into the device main body 72.

[0058] On the other hand, various switches are provided in the manual switch 74. For example, a stop switch identical to the stop switch SW2 on the device main body 72 side, an ON / OFF switch for instructing the pressurization and depressurization of the balloon 60, a pose switch for maintaining the pressure of the balloon 60, etc. are provided. The manual switch 74 is electrically connected to the device main body 72 via a cord 84. In addition, although not shown, a display unit indicating the air supply state or exhaust state of the balloon 60 is provided in the manual switch 74. Figure 1 A display unit indicating the air supply state or exhaust state of the balloon 60 is provided in the manual switch 74, although not shown.

[0059] The balloon control device 70 supplies air to the balloon 60 to expand it, and controls the air pressure to a constant value to keep the balloon 60 in an expanded state. Also, air is sucked from the balloon 60 to contract it, and the air pressure is controlled to a constant value to keep the balloon 60 in a contracted state.

[0060] The balloon control device 70 is connected to a balloon dedicated monitor 86, and when the balloon 60 is expanded and contracted, the pressure value or expansion and contraction state of the balloon 60 is displayed on the balloon dedicated monitor 86. In addition, the pressure value or expansion and contraction state of the balloon 60 can also be superimposed on the observation image of the endoscope 10 and displayed on the monitor 50.

[0061] As an example of an operation method of the endoscope device, the insertion portion 12 is gradually inserted in a pushing manner, and the balloon 60 is inflated as needed to fix the insertion portion 12 in the body (e.g., the large intestine). Further, after pulling out the insertion portion 12 to simplify the tube shape in the body (e.g., the large intestine), the balloon 60 is contracted and the insertion portion 12 is further inserted into the deep part of the intestine. For example, the insertion portion 12 is inserted from the anus of the subject, and when the tip of the insertion portion 12 passes through the sigmoid colon, the balloon 60 is inflated to fix the insertion portion 12 to the intestine, and the insertion portion 12 is pulled out to make the sigmoid colon substantially straight. Then, the balloon 60 is contracted and the tip of the insertion portion 12 is gradually inserted into the deep part of the intestine. Thus, the insertion portion 12 can be inserted into the deep part of the intestine. In addition, the above endoscope 10 and an insertion assisting tool with a balloon (not shown) can be used together as a double-balloon endoscope device.

[0062] [Balloon mounting jig]

[0063] Next, the balloon mounting jig according to the present embodiment will be described. Figure 3 It is a top view of the balloon mounting jig. Figure 4 It is a perspective view of a state in which the first opening and the second opening of the main body portion are opened.

[0064] Figure 5 It is a perspective view of a state in which the main body portion is folded. Figure 6 It is a plan view of a sheet for forming the balloon mounting jig. Figure 6 The shown plan view VIA is a view observed from the inner surface side when assembling the balloon mounting jig, and the plan view VIB is a view observed from the outer surface side. The balloon mounting jig is used to easily mount the balloon 60 on the insertion portion 12 of the endoscope 10. In addition, hereinafter, the method of mounting the balloon 60 on the insertion portion 12 will be described, but the mounting object of the balloon 60 is not limited to the insertion portion 12, and it can also be mounted on an insertion assisting tool (not shown) for assistance when inserting the insertion portion 12 into the body cavity.

[0065] The balloon mounting jig 100 has a main body portion 102 formed in a hollow cylindrical shape. The main body portion 102 has a first opening 104 at one end and a second opening 106 at the other end. At the second opening 106 of the main body portion 102, there are a pair of guide pieces 108a and 108b facing each other across the second opening 106. And, two sets of bending portions 110a, 110b, 110c are formed in the main body portion 102 from one end toward the other end and can bend the main body portion 102 inward from two directions. By performing a peak fold on the bending portions 110a and 110c and a valley fold on the bending portion 110b, the main body portion 102 can be bent inward. And, by bending at the bending portions 110a, 110b, 110c, the main body portion 102 can be folded into a flat shape, as Figure 5As shown, a pair of guide pieces 108a and 108b can be made to coincide with each other.

[0066] A pair of guide pieces 108a and 108b are arranged to extend from the second opening 106 toward the front end side opposite to the first opening 104. The width of the pair of guide pieces 108a and 108b is formed to be narrower than the width of the main body 102 folded into a flat shape. Thus, when the balloon mounting jig 100 is mounted on the balloon 60, the pair of guide pieces 108a and 108b can be arranged inside the first cylindrical part 60A and the second cylindrical part 60B of the balloon 60. When the insertion part 12 of the endoscope 10 is mounted on the balloon 60, by inserting the insertion part 12 along the pair of guide pieces 108a and 108b, the insertion part 12 can be easily inserted into the first cylindrical part 60A and the second cylindrical part 60B.

[0067] On the side of the first opening 104 of the main body 102, there is a wing part 112 which extends along the width direction from the main body 102 and has a width wider than that of the main body 102 folded into a flat shape. The wing part 112 is a part that abuts against the concave part 310 (reference Figure 8 ) when it is accommodated in the accommodation container 300 described later (reference Figure 8 ). By the abutment of the wing part 112 against the concave part, the movement and rotation of the main body 102 are prevented.

[0068] Such a balloon mounting jig 100 can be formed, for example, using the Figure 6 shown thin sheet S. By folding the peaks of the bending parts 110a and 110c formed on the main body 102 of the thin sheet S, folding the valleys of the bending part 110b, and folding the bending part 110d provided on the wing part 112 in a folded form with the peaks, and inserting the insertion piece 116 provided in the main body 102 into the hole part 118 at the end on the opposite side of the main body 102, a balloon mounting jig 100 with the main body 102 formed into a hollow cylindrical shape can be formed.

[0069] The materials of the main body 102 and the pair of guide pieces 108a and 108b are preferably set to materials that are difficult to adhere to rubber products such as silicone rubber and latex, which are the materials of the balloon. Specifically, paper such as drawing paper and Kent paper or resins such as fluororesin, silicone resin, polypropylene resin, and polycarbonate resin can be used. And when formed of paper, it is preferable to use Yupo paper (registered trademark) which is easy to expand or fold the main body 102 and is difficult to break.

[0070] (Surface characteristics of the balloon mounting jig)

[0071] As Figure 6As shown in the plan view VIA, in the balloon mounting jig 100 of the present embodiment, a sliding surface 120 on which the outer peripheral surface of the insertion portion 12 of the endoscope 10 can slide is provided on the inner surfaces of the main body portion 102 and the pair of guide pieces 108a and 108b. That is, the sliding surface 120 has slidability with respect to the insertion portion 12 of the endoscope 10.

[0072] The sliding surface 120 is preferably provided at least in a region where the insertion portion 12 contacts the main body portion 102 and the pair of guide pieces 108a and 108b when the insertion portion 12 is inserted, among the inner surfaces of the main body portion 102 and the pair of guide pieces 108a and 108b of the balloon mounting jig 100. More preferably, it is provided on the first surface 102a on the same surface as the guide piece 108a, the second surface 102b on the same surface as the guide piece 108b, and the entire region of the pair of guide pieces 108a and 108b when assembling the balloon mounting jig. Further preferably, it is provided in the entire region of the inner surface of the main body portion 102 and the inner surfaces of the pair of guide pieces 108a and 108b, and the main body portion 102 includes the first surface 102a, the second surface 102b, and side surfaces 102c and 102d provided between the first surface 102a and the second surface 102b. In addition, Figure 6 In the top view VIA shown, the sliding surface 120 is provided on the first surface 102a on the same surface as the guide piece 108a, the second surface 102b on the same surface as the guide piece 108b, and the entire region of the pair of guide pieces 108a and 108b.

[0073] As a method of providing the sliding surface 120 on the inner surfaces of the main body portion 102 and the pair of guide pieces 108a and 108b, it can be carried out by making the surface a wrinkled uneven surface or providing a coating made of a plastic material.

[0074] In order to make the surface a wrinkled uneven surface, for example, it can be carried out through the following steps: (1) roughening the inner surface by filing, (2) sandblasting with spherical or sharp-angled granular materials formed of resin or the like, (3) heat transfer printing into a shape with a rough surface having unevenness, (4) forming a plurality of stripe shapes by microfabrication. The formation of a coating made of a plastic material can be carried out by coating a fluorine or silicon-based coating. When forming stripe shapes by microfabrication and the roughness of the coating has a directionality, by having the same directionality as the insertion direction of the insertion portion 12, the insertion portion 12 can be slid in the insertion direction.

[0075] In addition, in the sliding surface 120, when the material of the balloon mounting jig 100 is made of paper, the insertion portion 12 can slide sufficiently with respect to the balloon mounting jig 100, so that the sliding surface 120 can be provided without treating the inner surface of the main body portion 102.

[0076] By setting the inner surfaces of the main body portion 102 and the pair of guide pieces 108a and 108b as the sliding surfaces 120, even in a state where a tension of the balloon 60 is applied around the pair of guide pieces 108a and 108b, the movement (sliding) of the insertion portion 12 such as insertion into or removal from the insertion portion 12 of the balloon mounting jig 100 can be smoothly performed.

[0077] As Figure 6 shown in the plan view VIB of [], the outer surfaces of the pair of guide pieces 108a and 108b have: a high friction portion 122 provided on the side of the second opening portion 106; and a low friction portion 124 provided on the front end side of the high friction portion 122 and having a smaller coefficient of friction than the high friction portion 122.

[0078] The high friction portion 122 can be formed by attaching a thin polypropylene sheet, applying an adhesive (sticky) coating such as low-hardness silicon, or attaching a smooth paper such as laminated paper or Upo paper. And the low friction portion 124 can be formed by the same method as the sliding surface 120 formed on the inner surface of the balloon mounting jig 100 described above.

[0079] By setting the outer surfaces of the pair of guide pieces 108a and 108b as regions where the high friction portion 122 and the low friction portion 124 have different coefficients of friction, the low friction portion 124 can easily slide relative to the balloon 60, so that the insertion or removal of the balloon mounting jig 100 into or from the first cylindrical portion 60A of the balloon 60 can be performed. And it can be less likely to slide relative to the balloon 60 in the high friction portion 122, so that the balloon mounting jig 100 and the second cylindrical portion 60B of the balloon 60 can be moved integrally.

[0080] If the high friction portion 122 and the low friction portion 124 can have the above effects, then by forming only either the high friction portion 122 or the low friction portion 124, two regions with relatively different coefficients of friction can be formed. For example, when the balloon mounting jig 100 is formed of resin, the frictional resistance of the resin surface is large, so the process of forming the high friction portion 122 is not performed, but the process of forming the above-mentioned low friction portion 124 (the process of forming the sliding surface 120) is performed, whereby the high friction portion 122 and the low friction portion 124 can be formed on the outer surfaces of the pair of guide pieces 108a and 108b. And when the material of the balloon mounting jig 100 is paper, the frictional resistance of the balloon mounting jig 100 formed of paper is small, so the process of forming the low friction portion 124 is not performed, but the process of forming the above-mentioned high friction portion 122 is performed, whereby the high friction portion 122 and the low friction portion 124 can be formed on the outer surfaces of the pair of guide pieces 108a and 108b.

[0081] Thus, by forming either the high friction portion 122 or the low friction portion 124 with the coefficient of friction of the material of the balloon mounting jig 100 itself, it is also possible to form the high friction portion 122 and the low friction portion 124 with different coefficients of friction on the outer surfaces of the pair of guide pieces 108a and 108b.

[0082] (Shape of a pair of guide pieces)

[0083] Next, the shape of the pair of guide pieces 108a and 108b will be described. As Figures 3 to 6 shown, the pair of guide pieces 108a and 108b have a narrow-width portion 126 provided on the front end side and a wide-width portion 128 provided on the side of the second opening portion 106. The wide-width portion 128 is formed to have a width wider than that of the narrow-width portion 126.

[0084] The total length of the widths of the pair of guide pieces 108a and 108b of the wide-width portion 128 is preferably equal to or less than the length of the outer periphery of the insertion portion 12 of the endoscope 10 to be inserted. By setting the total length of the widths of the pair of guide pieces 108a and 108b to be equal to or less than the outer periphery of the insertion portion 12, when the insertion portion 12 is inserted along the pair of guide pieces 108a and 108b from the first opening portion 104, it is possible to prevent the wide-width portions 128 arranged around the insertion portion 12 from overlapping and becoming thick.

[0085] Moreover, as the total length of the widths of the wide-width portion 128 becomes equal to the outer periphery of the insertion portion 12, the area where the insertion portion 12 comes into direct contact with the balloon 60 becomes smaller. Therefore, in a state where the balloon 60 is inserted into the balloon mounting jig 100, it is possible to easily move the insertion portion 12 relative to the balloon mounting jig 100.

[0086] The narrow-width portion 126 provided at the front ends of the pair of guide pieces 108a and 108b is formed to have a width narrower than that of the wide-width portion 128. Regarding the narrow-width portion 126, in a state where the insertion portion 12 is inserted into the balloon mounting jig 100, a part of the insertion portion 12 comes into direct contact with the balloon 60, and the other part comes into contact via the narrow portion 126. Thus, by grasping the portion of the balloon 60 in direct contact with the insertion portion 12 disposed at the front end of the insertion portion 12 and pulling out the balloon mounting jig 100, it is possible to pull out the balloon mounting jig 100 without moving the balloon 60.

[0087] The front end sides of the pair of guide pieces 108a and 108b preferably have side portions parallel to the insertion direction of the insertion portion 12 and are formed to have a front end shape without a taper. By setting the shape of the front end sides of the pair of guide pieces 108a and 108b to such a structure, the front ends of the pair of guide pieces 108a and 108b can be inserted into the front end of the first cylindrical portion 60A of the balloon 60. Therefore, it is possible to easily insert the insertion portion 12 of the endoscope 10 into the front end of the first cylindrical portion 60A.

[0088] (Balloon with mounting fixture)

[0089] Next, the method of mounting the balloon 60 on the balloon mounting fixture 100 will be described. The balloon mounting fixture 100 of the present invention can also be used by being accommodated in a later-described accommodation container in a state where the balloon 60 is mounted. Hereinafter, the structure in which the balloon 60 is mounted on the balloon mounting fixture 100 is the "balloon 200 with mounting fixture".

[0090] Figure 7 This is a diagram illustrating the form of mounting the balloon 60 on the balloon mounting fixture 100. When mounting the balloon mounting fixture 100 on the balloon 60, first, a pair of guide pieces 108a and 108b are inserted into the second cylindrical portion 60B, and the front end side portions of the pair of guide pieces 108a and 108b protrude from the second cylindrical portion 60B. Further, the pair of guide pieces 108a and 108b are gradually inserted into the inside of the balloon main body 60C, whereby the second cylindrical portion 60B moves toward the first cylindrical portion 60A side, and the balloon main body 60C is folded back inward, thereby forming a folded-back opening 66. Then, the guide pieces 108a and 108b and the main body portion 102 are further inserted through the folded-back opening 66, whereby the front end side portions (narrow-width portions 126) of the guide pieces 108a and 108b protruding from the second cylindrical portion 60B can be inserted into the first cylindrical portion 60A and the second cylindrical portion 60B can be disposed in the wide-width portion 128. Thereby, the balloon mounting fixture 100 can be mounted on the balloon 60.

[0091] As Figure 7 shown, in a state where the balloon 60 is mounted on the balloon mounting fixture 100, the second cylindrical portion 60B is disposed inside the folded-back opening 66. Regarding the pair of guide pieces 108a and 108b, the narrow-width portions 126 of the guide pieces 108a and 108b are disposed inside the first cylindrical portion 60A. And the wide-width portions 128 of the guide pieces 108a and 108b are disposed inside the second cylindrical portion 60B. As shown in the F-F cross-section 202, the pair of guide pieces 108a and 108b inside the first cylindrical portion 60A are bent outward along the longitudinal direction A of the pair of guide pieces 108a and 108b (refer to Figure 3 ) and disposed. Thereby, in a state where the balloon mounting fixture 100 is mounted on the balloon 60, the first opening 104 can be slightly opened from the completely folded state. Therefore, it is possible to easily insert the insertion portion 12 of the endoscope 10 into the first opening 104.

[0092] In the balloon 200 with the mounting jig, the first cylindrical portion 60A is disposed on the narrow portion 126 provided on the front end side of the pair of guide pieces 108a and 108b. Therefore, it is preferable to provide a low friction portion 124 on the outer surface of the narrow portion 126 of the pair of guide pieces 108a and 108b. When the balloon 200 with the mounting jig is inserted into the insertion portion 12 of the endoscope 10, the insertion portion 12 is inserted into the front ends of the pair of guide pieces 108a and 108b, and the first cylindrical portion 60A of the balloon 60 is disposed at the front end of the insertion portion 12. By pulling out the balloon mounting jig 100 without moving the position of the first cylindrical portion 60A relative to the insertion portion 12, the first cylindrical portion 60A can be mounted at the front end of the insertion portion 12. At this time, by setting the outer surface of the narrow portion 126 where the first cylindrical portion 60A is disposed as the low friction portion 124, the pair of guide pieces 108a and 108b can be easily pulled out from the first cylindrical portion 60A.

[0093] Moreover, in the balloon 200 with the mounting jig, the second cylindrical portion 60B is disposed on the wide portion 128 provided on the base end side of the pair of guide pieces 108a and 108b. Therefore, it is preferable to provide a high friction portion 122 on the outer surface of the wide portion 128 of the pair of guide pieces 108a and 108b. In order for the second cylindrical portion 60B to move to the base end side of the insertion portion 12 after the insertion portion 12 is inserted, by setting the wide portion 128 where the second cylindrical portion 60B is disposed as the high friction portion 122, the second cylindrical portion 60B can be integrally moved with the balloon mounting jig 100 without sliding on the pair of guide pieces 108a and 108b. The inner surfaces of the pair of guide pieces 108a and 108b and the main body portion 102 have sliding surfaces that can slide on the outer peripheral surface of the insertion portion 12. Therefore, the balloon mounting jig 100 is configured to be easily movable on the insertion portion 12. And since the wide portion 128 is wider than the narrow portion 126, the contact area between the insertion portion 12 and the second cylindrical portion 60B can be reduced, and it is not easily affected by the tension of the second cylindrical portion 60B. The balloon mounting jig 100 is configured to be easily movable on the insertion portion 12.

[0094] In the balloon 200 with the mounting jig, in this state, the insertion portion 12 can be inserted and the balloon 60 can be mounted, or it can be accommodated in Figure 8 the accommodating container 300 shown. In the state of being accommodated in the accommodating container 300, the insertion portion 12 is inserted, and the balloon 60 is mounted on the insertion portion 12. Hereinafter, the accommodating container 300 will be described.

[0095] (Accommodating Container)

[0096] Figure 8 is a perspective view of the accommodating container. Figure 9 is a plan view of the state where the lid portion is removed. Figure 10It is a cross-sectional view of a state in which a balloon with a mounting jig is accommodated in a containing container.

[0097] The containing container 300 has a trunk portion 302 composed of a cylindrical trunk main body 318 and a middle groove portion 320 narrower than the width of the trunk main body 318, a small groove portion 306 provided on the middle groove portion 320 side of the trunk portion 302, and a container opening portion 308 provided on the opposite side of the small groove portion 306. Between the trunk main body 318 and the middle groove portion 320, there is a height difference portion 322 provided with a surface perpendicular to the insertion direction B of the balloon mounting jig 100. On the container opening portion 308 side of the trunk portion 302, there is a concave portion 310 formed in a concave shape in a direction perpendicular to the insertion direction B of the balloon mounting jig 100. And, the container opening portion 308 has a flange portion 312 provided to expand along a direction perpendicular to the insertion direction B of the balloon mounting jig 100, and a lid portion 314 is attached to the flange portion 312.

[0098] When accommodating the balloon 200 with the mounting jig, the balloon main body 60C and the second cylindrical portion 60B of the balloon 60 are accommodated in the trunk portion 302, and the first cylindrical portion 60A is accommodated in the small groove portion 306. And, inside the trunk portion 302, a part of the balloon main body 60C and the second cylindrical portion 60B are accommodated in the middle groove portion 320, and the other part of the balloon main body 60C is accommodated in the trunk main body 318. By accommodating the balloon main body 60C in the trunk portion 302, it is possible to prevent the balloon main bodies 60C disposed around the balloon mounting jig 100 from adhering to each other and maintain the shape of the balloon main body 60C.

[0099] And, in the balloon mounting jig 100, the main body portion 102 is accommodated in the trunk main body 318 of the trunk portion 302, and the pair of guide pieces 108a, 108b are accommodated in the small groove portion 306 and the middle groove portion 320. By accommodating the balloon mounting jig 100 in the containing container 300 in this way, it is possible to dispose the end portions on the pair of guide pieces 108a, 108b side of the main body portion 102 of the balloon mounting jig 100 at the boundary between the trunk main body 318 and the middle groove portion 320. That is, it is possible to make the height difference portion 322 of the containing container 300 and the end portions on the pair of guide pieces 108a, 108b side of the main body portion 102 of the balloon mounting jig 100 the same surface in a direction perpendicular to the insertion direction (the insertion direction B of the balloon mounting jig 100) of the insertion portion 12 of the endoscope 10. According to this structure, the height difference portion 322 becomes the second restricting surface 324 that restricts the insertion direction of the main body portion 102 of the balloon mounting jig 100, and by the second restricting surface 324 coming into contact with the end portions on the pair of guide pieces 108a, 108b side of the main body portion 102 of the balloon mounting jig 100 of the restricted portion 130, it is possible to restrict the position of the insertion direction of the balloon mounting jig 100.

[0100] The main body 318 of the trunk portion is preferably formed in a conical shape that expands from the middle groove portion 320 toward the container opening portion 308 with an inner diameter. By adopting a conical shape that expands toward the container opening portion 308 side, the balloon 200 with the mounting jig can be easily taken out. Moreover, even when manufacturing the accommodating container 300, it is possible to easily pull it out from the mold by expanding the container opening portion 308 side.

[0101] The small groove portion 306 accommodates the first cylindrical portion 60A and the narrow-width portions 126 of the pair of guide pieces 108a and 108b. The cross-sectional shape of the small groove portion 306 cut along the direction C perpendicular to the axial direction of the trunk portion 302 (the same direction as the insertion direction B of the balloon mounting jig 100) is an ellipse ( Figure 9 ). In a state where the balloon 200 with the mounting jig is accommodated in the accommodating container 300, the front ends of the pair of guide pieces 108a and 108b are preferably arranged along the short-axis direction D of the elliptical shape of the small groove portion 306. In addition, "arranging the guide pieces along the short-axis direction" means that the pair of guide pieces are arranged on both sides with the short axis of the small groove portion 306 interposed therebetween.

[0102] The wing portion 112 of the balloon mounting jig 100 is accommodated in the concave portion 310. The concave portion 310 has a positioning surface 310a formed along a direction perpendicular to the insertion direction B of the balloon mounting jig 100 and a first restricting surface 310b formed along the circumferential direction of the trunk portion. By the contact between the positioning surface 310a and the wing portion 112 of the balloon mounting jig 100, the position in the direction perpendicular to the insertion direction B of the balloon mounting jig 100 is determined, and it is possible to prevent the side surface of the balloon main body 60C from contacting the trunk portion 302, thereby enabling the shape of the balloon to be stable.

[0103] Moreover, the first restricting surface 310b also restricts the rotational direction of the insertion direction B of the balloon mounting jig 100 with respect to the central axis by contacting the wing portion 112. Thereby, it is possible to prevent the rotation of the balloon 200 with the mounting jig during transportation, and it is possible to prevent the balloon main bodies 60C arranged around the balloon mounting jig 100 from adhering to each other and maintain the shape of the balloon main body 60C.

[0104] The flange portion 312 is formed by expanding from the container opening portion 308 in a direction perpendicular to the insertion direction B of the balloon mounting jig 100. The flange portion 312 is composed of an outer peripheral portion 312a and an inner peripheral portion 312b, and the inner peripheral portion 312b, the outer peripheral portion 312a are sequentially provided from the container opening portion 308 side. The inner peripheral portion 312b is formed closer to the middle groove portion 320 side than the outer peripheral portion 312a in the insertion direction B of the balloon mounting jig 100. That is, the outer peripheral portion 312a and the inner peripheral portion 312b are formed in a stepped shape, and the outer peripheral portion 312a is formed to protrude in a direction opposite to the middle groove portion 320 side.

[0105] The lid portion 314 is attached to the flange portion 312 and hermetically seals the inside of the accommodating container 300 to ensure sterility. The lid portion 314 is attached to the attachment surface provided on the base end side of the outer peripheral portion 312a of the flange portion 312. By attaching the lid portion 314 to the outer peripheral portion 312a, the area of the attached lid portion 314 can be reduced.

[0106] [Balloon mounting method]

[0107] Next, using Figures 11 to 17 , a balloon mounting method using a package (hereinafter, also referred to as "package of balloon with mounting jig") in which a balloon mounting jig with a balloon 60 mounted therein is accommodated in an accommodating container will be described.

[0108] Prepare a package of balloon with a mounting jig and remove the lid portion 314. Figure 11 This is a view of inserting the insertion portion of the endoscope into the package of balloon with the mounting jig after removing the lid portion. As Figure 12 shown, in the package of balloon with the mounting jig after removing the lid portion 314, the first opening portion 104 side of the balloon mounting jig 100 is disposed on the container opening portion 308 side of the accommodating container 300. In this state, the insertion portion 12 of the endoscope 10 is inserted through the first opening portion 104. The insertion portion 12 is inserted until it abuts against the small groove portion 306 of the accommodating container 300.

[0109] The main body portion 102 of the balloon mounting jig 100 and the inner surfaces of the pair of guide pieces 108a and 108b have a sliding surface 120 on which the outer peripheral surface of the insertion portion 12 can slide. Therefore, the insertion portion 12 can be easily inserted into the balloon mounting jig 100.

[0110] Figure 12 This is a view illustrating a state where the front end of the insertion portion is inserted until it abuts against the front end of the small groove portion. The insertion portion 12 inserted through the first opening portion 104 passes through the inside of the main body portion 102 and is inserted between the pair of guide pieces 108a and 108b through the second opening portion 106. As Figure 6 shown, in the balloon 200 with the mounting jig, the first cylinder portion 60A and the second cylinder portion 60B are disposed outside the pair of guide pieces 108a and 108b. Therefore, by inserting the insertion portion 12 between the pair of guide pieces 108a and 108b, the insertion portion 12 can be inserted into the inside of the first cylinder portion 60A and the second cylinder portion 60B via the pair of guide pieces 108a and 108b.

[0111] In the balloon 200 with the mounting jig, it is preferably considered the dimension in which the tip of the insertion portion 12 drags the balloon when mounted on the balloon and protrudes from the tip, and the tips of the pair of guide pieces 108a and 108b protrude about 0.5 to 3 mm from the tip of the first cylindrical portion 60A and are accommodated in the accommodating container 300. By inserting the tip of the insertion portion 12 into contact with the tip of the small groove portion 306 in a state where the pair of guide pieces 108a and 108b are in contact with the tip of the small groove portion 306, the end of the first cylindrical portion 60A can be made to coincide with the tip of the insertion portion 12.

[0112] When the insertion portion 12 of the endoscope 10 is inserted along the pair of guide pieces 108a and 108b from the first opening portion 104 of the balloon mounting jig 100, an insertion resistance is generated due to the influence of the tension of the first cylindrical portion 60A and the second cylindrical portion 60B of the balloon 60, and the balloon mounting jig 100 receives a force in the insertion direction of the insertion portion 12. By bringing the height difference portion 322 provided on the accommodating container 300 into contact with the restricted portion 130 of the balloon mounting jig 100, the balloon mounting jig 100 can be prevented from moving in the insertion direction of the insertion portion 12. Therefore, it is possible to prevent the pair of guide pieces 108a and 108b from being stressed in the insertion direction of the insertion portion 12, and it is possible to prevent the pair of guide pieces 108a and 108b from bending. As a result, the insertion portion 12 can be easily inserted into the tip of the first cylindrical portion 60A of the balloon 60.

[0113] Next, as Figure 13 shown, the balloon 200 with the mounting jig into which the insertion portion 12 is inserted is pulled out from the accommodating container 300. In addition, in the pulled-out balloon 200 with the mounting jig and the endoscope 10, when the position of the tip of the insertion portion 12 does not coincide with the end of the first cylindrical portion 60A of the balloon 60, the balloon mounting jig 100 is moved in the longitudinal axis direction of the insertion portion 12 to make the position of the tip of the insertion portion 12 coincide with the end of the first cylindrical portion 60A of the balloon 60. When the balloon 200 with the mounting jig and the endoscope 10 are pulled out, this process may not be performed when the position of the tip of the insertion portion 12 coincides with the end of the first cylindrical portion 60A of the balloon 60.

[0114] Next, the portion where the insertion portion 12 is in contact with the first cylindrical portion 60A is pressed. Specifically, the first cylindrical portion 60A is pressed against the insertion portion 12 while avoiding the portions of the pair of guide pieces 108a and 108b of the insertion portion 12. Moreover, in a state where the first cylindrical portion 60A is pressed, as Figure 14 shown, the balloon mounting jig 100 is moved toward the proximal end side of the insertion portion 12. By moving the balloon mounting jig 100 in a state where the first cylindrical portion 60A is pressed, the position of the first cylindrical portion 60A can be fixed and the position of the second cylindrical portion 60B can be moved together with the balloon mounting jig 100. As a result, as Figure 15As shown, the second cylinder part 60B is released to the outside of the folding opening part 66.

[0115] At this time, the outer surfaces of the front end sides (narrow width parts 126) of the pair of guide pieces 108a and 108b are low friction parts 124 with a small coefficient of friction, so it is possible to easily pull out only the pair of guide pieces 108a and 108b. And, the outer surfaces of the second opening part 106 sides (wide width parts 128) of the pair of guide pieces 108a and 108b are high friction parts 122, so it is possible to make it difficult for the second cylinder part 60B to slide on the pair of guide pieces 108a and 108b. Therefore, it is possible to move the balloon 60 and the balloon mounting jig 100 integrally toward the proximal end side of the insertion part 12 on the insertion part 12 while pressing the pair of guide pieces on the second cylinder part 60B. And, the second cylindrical part 60B is provided in the wide width part 128, and the wide width part 128 can increase the contact area between the pair of guide pieces 108a and 108b and the insertion part 12. As described above, since the inner surfaces of the pair of guide pieces 108a and 108b have sliding surfaces 120, it is possible to easily move the balloon mounting jig 100 on the insertion part 12 even when the second cylinder part 60B is under tension.

[0116] Next, as Figure 16 shown, while paying attention not to move the position of the balloon 60, the second cylinder part 60B is wound toward the first cylinder part 60A side until the pair of guide pieces 108a and 108b are disengaged. If the second cylinder part 60B is wound until the pair of guide pieces 108a and 108b are disengaged, the balloon mounting jig 100 is disassembled. The balloon mounting jig 100 is pulled out by moving the balloon mounting jig 100 in the proximal end direction to the insertion part 12. When the balloon mounting jig 100 is made of paper, the balloon mounting jig 100 can be torn and removed.

[0117] If the balloon mounting jig 100 is removed, the position of the balloon 60 is fixed so as not to move, and the second cylinder part 60B is wound back to its original state ( Figure 17 ). Finally, the balloon 60 is fixed to the insertion part 12 by inserting the first balloon fixing member 61 and the second balloon fixing member 62 into the first cylinder part 60A and the second cylinder part 60B of the balloon 60 (refer to Figure 2 ). As the first balloon fixing member 61 and the second balloon fixing member 62, rubber bands can be used. The rubber bands can be installed using, for example, the device described in Japanese Unexamined Patent Application Publication No. 2013 - 126526. And, as the first balloon fixing member 61 and the second balloon fixing member 62, strings can be used, and by winding the first cylinder part 60A and the second cylinder part 60B with the strings, the balloon 60 can be fixed to the insertion part 12.

[0118] In the above-described embodiment, the method of accommodating the balloon mounting jig 100 of the present invention equipped with a balloon in the accommodating container 300 has been described, but the present invention is not limited thereto. By inserting the insertion portion 12 into the balloon mounting jig equipped with the balloon 60, the balloon 60 can be mounted on the insertion portion 12 without being accommodated in the accommodating container.

[0119] As described above, according to the present embodiment, when the insertion portion 12 of the endoscope 10 is inserted into the balloon mounting jig 100 equipped with the balloon 60, the insertion portion 12 can be easily moved. In addition, the influence of the tension of the balloon 60 can be reduced, the balloon mounting jig 100 can be easily moved, and the balloon 60 can be easily mounted on the insertion portion 12 and the insertion auxiliary tool.

[0120] Reference Signs

[0121] 10 - Endoscope, 12 - Insertion section, 14 - Operation section, 16 - Universal cord, 18 - LG connector, 20 - Light source device, 22 - Cable, 24 - Electrical connector, 26 - Processor, 28 - Gas and water supply button, 30 - Suction button, 32 - Shutter button, 34 - Function switching button, 36 - Bend angle knob, 38 - Balloon gas supply port, 40 - Flexible section, 42 - Bending section, 44 - Tip section, 46 - Forceps insertion section, 48 - Gas and water supply connector, 49 - Suction connector, 50 - Monitor, 52 - Observation window, 54 - Lighting window, 56 - Gas and water supply nozzle, 58 - Forceps opening, 60 - Balloon, 60A - First cylinder section, 60B - Second cylinder section, 60C - Balloon body, 61 - First balloon fixing member, 62 - Second balloon fixing member, 64 - Vent hole, 66 - Return opening, 70 - Balloon control device, 72 - Device main body, 74 - Manual switch, 76 - Pressure display section, 80 - Hose, 82 - Backflow prevention unit, 84 - Cord, 86 - Balloon dedicated monitor, 100 - Balloon mounting jig, 102 - Main body section, 102a - First surface, 102b - Second surface, 102c, 102d - Side surfaces 104 - First opening, 106 - Second opening, 108a, 108b - Guide pieces, 110a, 110b, 110c, 110d - Bending sections, 112 - Wing section, 116 - Insertion piece, 118 - Hole section, 120 - Sliding surface, 122 - High friction section, 124 - Low friction section, 126 - Narrow section, 128 - Wide section, 130 - Restricted section, 200 - Balloon with mounting jig, 202 - Cross section, 300 - Accommodating container, 302 - Trunk section, 306 - Small groove section, 308 - Container opening, 310 - Recess, 310a - Positioning surface, 310b - First restricting surface, 312 - Flange section, 312a - Outer peripheral section, 312b - Inner peripheral section, 314 - Cover section, 318 - Trunk section main body, 320 - Middle groove section, 322 - Height difference section, 324 - Second restricting surface, S - Sheet SW1 - Power switch, SW2 - Stop switch, VIA, VIB - Plan views.

Claims

1. A balloon mounting jig for mounting a balloon having a balloon body, a first cylindrical portion, and a second cylindrical portion on an insertion portion of an endoscope or on an insertion assisting tool that assists the insertion portion of the endoscope into a body cavity. The first cylindrical portion is provided at one end of the balloon body, and the second cylindrical portion is provided at the other end of the first cylindrical portion on the opposite side of the balloon body. The balloon mounting jig has: A main body portion formed in a hollow cylindrical shape and capable of being folded into a flat shape, having a first opening at one end and a second opening at the other end; and A pair of opposing guide pieces extending from the second opening toward the side opposite to the side where the first opening is provided. In the balloon mounting jig, a sliding surface on which the outer peripheral surface of the insertion portion or the insertion assisting tool can slide is provided on the inner surfaces of the main body portion and the pair of guide pieces. The pair of guide pieces has: A high friction portion provided on the outer surface of the guide piece on the second opening side; and A low friction portion provided on the outer surface of the front end side of the guide piece and having a smaller coefficient of friction than the high friction portion. The high friction portion is a portion for holding the second cylindrical portion of the balloon, and the low friction portion is a portion for holding the first cylindrical portion of the balloon.

2. The balloon mounting jig according to claim 1, wherein The sliding surface is at least the area where the insertion portion or the insertion assisting tool contacts the main body portion and the pair of guide pieces.

3. The balloon mounting jig according to claim 2, wherein The sliding surface is the entire inner surface of the main body portion and the pair of guide pieces.

4. The balloon mounting jig according to any one of claims 1 to 3, wherein The coefficient of friction of the sliding surface is smaller than the coefficient of friction of the outer surfaces of the main body portion and the pair of guide pieces.

5. The balloon mounting jig according to any one of claims 1 to 3, wherein The sliding surface is a corrugated uneven surface.

6. The balloon mounting jig according to any one of claims 1 to 3, wherein The sliding surface has a coating made of a plastic material.

7. The balloon mounting jig according to any one of claims 1 to 3, wherein The high friction portion has a thin sheet with a smooth surface or a coating with adhesiveness.

8. The balloon mounting jig according to any one of claims 1 to 3, wherein The pair of guide pieces has a narrow width portion provided on the front end side of the guide piece and a wide width portion provided on the second opening side of the guide piece and wider than the narrow width portion. The sum of the widths of the wide width portions of the pair of guide pieces is equal to or less than the length of the outer periphery of the insertion portion or the insertion assisting tool.

9. The balloon mounting jig according to any one of claims 1 to 3, wherein The materials of the main body portion and the pair of guide pieces are resin or paper.

10. A balloon mounting jig is used to mount a balloon having a balloon body, a first cylindrical portion, and a second cylindrical portion on an insertion portion of an endoscope or an insertion assisting tool that assists the insertion portion of the endoscope into a body cavity. The first cylindrical portion is provided at one end of the balloon body, and the second cylindrical portion is provided at the other end of the first cylindrical portion on the opposite side of the balloon body. The balloon mounting jig has: A main body portion formed in a hollow cylindrical shape and capable of being folded into a flat shape, having a first opening at one end and a second opening at the other end; A pair of opposing guide pieces extending from the second opening toward the side opposite to the side where the first opening is provided; and A narrow-width portion provided on the front end side of the guide pieces of the pair of guide pieces and a wide-width portion wider than the narrow-width portion on the second opening side, The sum of the widths of the wide-width portions of the pair of guide pieces is equal to or less than the length of the outer circumference of the insertion portion or the insertion assisting tool, The wide-width portion has a high-friction portion provided on the outer surface, and the narrow-width portion has a low-friction portion provided on the outer surface and having a friction coefficient smaller than that of the high-friction portion, The high-friction portion is a portion for holding the second cylindrical portion of the balloon, and the low-friction portion is a portion for holding the first cylindrical portion of the balloon.

11. The balloon mounting jig according to claim 10, wherein The materials of the main body portion and the pair of guide pieces are resin or paper.

Images