JP5501686B2 - Endoscope device - Google Patents

Description

  The present invention includes an endoscope having an elongated insertion portion that is inserted into a subject, and a sheath that is inserted into the subject together with the inserted insertion portion. The present invention relates to an endoscope apparatus.

  As is well known, the endoscope apparatus is widely used in the medical field and the industrial field. Endoscopic devices used in the medical field are used to observe organs in a body part of a subject by inserting an elongated insertion portion into the body cavity of the subject, the subject. Accordingly, treatment, treatment, and the like can be performed on a region to be examined in a body cavity using a treatment tool inserted into a treatment tool insertion conduit of an endoscope.

  In addition, an endoscope apparatus used in the industrial field is configured to insert a long and thin insertion portion of an endoscope into a subject such as a jet engine or a pipe of a factory so that a wound on a subject in the subject is damaged. In addition, observation of corrosion and various treatments can be performed.

  By the way, when observing a region to be examined, the observation window provided at the distal end located on the distal end side of the insertion portion is usually opposed to the region to be examined. If the tip portion moves after facing the test site, there is a problem that it becomes difficult to observe the test site.

  In view of such a problem, in Patent Document 1, a balloon that expands and contracts by air supply interruption is provided on the outer periphery on the distal end side of the insertion portion, and the balloon is inflated by air supply, whereby the distal end of the insertion portion is The structure which fixes the side with respect to the inside of a subject with the inflated balloon is disclosed.

  Patent Document 2 discloses a configuration in which an insertion assisting tool that supports the distal end side of the insertion portion and can be placed in the subject is provided on the distal end side of the insertion portion.

  Further, Patent Document 3 discloses a configuration for defining the position of the insertion portion with respect to the test site by hooking a hook projecting from the channel of the insertion portion to the test site.

JP 2008-212671 A JP 2004-341547 A JP 2004-121546 A

  Here, using an industrial endoscope, the distal end side of the insertion part moves during observation when continuously observing the test site for a long period of time, sometimes months to years. Otherwise, accurate observation will not be possible. In this case, it is necessary to correct the position on the distal end side of the insertion portion. However, depending on the subject, it may be difficult to easily correct the position on the distal end side of the insertion portion. Therefore, a configuration that can reliably fix the distal end side of the insertion portion over a long period of time has been desired.

  However, when the endoscope is inserted into a pipeline having a complicated shape, depending on the shape of the insertion portion, the insertion portion is fixed in the pipeline using the configuration disclosed in Patent Documents 1 to 3 described above. However, there is a problem that the distal end side of the insertion portion may move.

  Moreover, even if the insertion portion is fixed in the pipeline using the configurations disclosed in Patent Documents 1 to 3 described above, the proximal end side of the insertion portion located outside the pipeline is unexpectedly pressed or pulled. In such a case, there is a problem that the distal end side of the insertion portion moves.

  For example, when the balloon disclosed in Patent Document 1 is used, the air in the balloon escapes with time, so that there is a problem that the fixation is released when used for a long time.

  The same applies to the case where the insertion portion is inserted into the subject using a guide sheath.

  The present invention has been made in view of the above problems, and includes an arrangement that can prevent an unexpected movement of the insertion portion in the subject and can reliably fix the distal end side of the insertion portion for a long period of time. An object of the present invention is to provide an endoscope apparatus.

In order to achieve the above object, an endoscope apparatus according to the present invention includes an endoscope having an elongated insertion portion that is inserted into a subject, and the insertion portion is inserted into the endoscope and the insertion portion is inserted through the endoscope. In an endoscope apparatus comprising a sheath inserted into the subject together with an insertion portion, the distal end side of the sheath provided on the outer periphery on the distal end side in the insertion direction of the sheath with respect to the inside of the subject At least a part of the sheath is formed by injecting resin into the subject, which is slidably moved back and forth in the insertion direction with respect to the fixing member to be fixed and the outer periphery of the sheath. A resin injection tube fixed with the resin to the inside of the subject, and a resin supply source connected to the resin injection tube are provided.

  ADVANTAGE OF THE INVENTION According to this invention, the endoscope apparatus which comprises the structure which can prevent the unexpected movement of an insertion part in a subject, and can fix the front end side of an insertion part reliably for a long period of time can be provided.

The perspective view of the endoscope apparatus which shows 1st Embodiment. 1 is a block diagram schematically showing the operation of the endoscope apparatus of FIG. 1 is a cross-sectional view showing the internal configuration of the sheath of FIG. 1 excluding the balloon, the pipe fixing portion, the traction operation ring, the traction trunk portion, and the sheath fixing ring. Sectional view of the endoscope of FIG. Sectional drawing which expands and shows the front end side of the insertion part of the endoscope of FIG. FIG. 1 is a partial cross-sectional view showing a state in which the distal end side of the sheath is fixed in the pipeline by a balloon and a resin when the sheath of FIG. 1 is inserted in the pipeline. The fragmentary sectional view which shows the modification which fixes the front end side of a sheath with the hook protruded from the pipe line along the insertion direction different from the hole in which the insertion part of a sheath is inserted The fragmentary perspective view which shows the structure of the modification which fixes the front end side of a sheath with a key part. The fragmentary perspective view which shows the front end side of the sheath in the endoscope apparatus which shows 2nd Embodiment. The fragmentary sectional view which shows the state which inserted the distal end side of the sheath in the endoscope apparatus which shows 3rd Embodiment in the pipe line, and was fixed in the pipe line The fragmentary perspective view which shows the front end side of the sheath in the endoscope apparatus which shows 4th Embodiment. The fragmentary perspective view which shows the front end side of the sheath in the endoscope apparatus which shows 5th Embodiment The fragmentary perspective view which shows the modification by which the sheath 1 is penetrated in the eccentric position of the expansion member of FIG. The fragmentary perspective view which shows the front end side of the sheath in the endoscope apparatus which shows 6th Embodiment The fragmentary perspective view which shows the front end side of the sheath in the endoscope apparatus which shows 7th Embodiment The fragmentary sectional view which shows the state which curves the front end side of the sheath of FIG. 15, and fixes in a pipe line

Embodiments of the present invention will be described below with reference to the drawings. ◎
(First embodiment)
1 is a perspective view of the endoscope apparatus showing the present embodiment, FIG. 2 is a block diagram schematically showing the operation of the endoscope apparatus of FIG. 1, and FIG. 3 is a configuration inside the sheath of FIG. Is a cross-sectional view showing a balloon, a pipe fixing portion, a traction operation ring, a traction trunk portion, and a sheath fixing ring.

  4 is a cross-sectional view of the endoscope of FIG. 1, FIG. 5 is a cross-sectional view showing the distal end side of the insertion portion of the endoscope of FIG. 4 in an enlarged manner, and FIG. FIG. 5 is a partial cross-sectional view showing a state in which the distal end side of the sheath is fixed in the duct by a balloon and a resin when the sheath is inserted.

  As shown in FIG. 1, an endoscope apparatus 50 includes an endoscope 10 having an elongated insertion portion 11 to be inserted into a subject, and the insertion portion 11 inserted into an interior 1 i (see FIG. 3). At the same time, the main portion is configured by including the inserted insertion portion 11 and the sheath 1 which is the subject, for example, inserted into the duct 100.

  It should be noted that the distal end side (hereinafter simply referred to as the distal end side) of the insertion direction 11 of the insertion portion 11 into which the inside 1i is inserted from the opening 1a on the proximal end side (hereinafter simply referred to as the proximal end side) of the sheath 1 in the insertion direction S. 3 is fixed to the sheath 1 by contacting the tapered portion 2 which is a position fixing member provided in the inside 1i on the distal end side of the sheath 1, as shown in FIG. In this fixed state, the test site T is observed using the observation window 31 provided on the distal end surface on the distal end side of the insertion portion 11 through the opening 1d on the distal end side of the sheath 1.

  In FIG. 1, the distal end surface on the distal end side of the insertion portion 11 is provided with an LED 32 and the like for irradiating illumination light to the test site in addition to the observation window 31. The LED 32 observes a bright place. It may not be provided in some cases.

  The observation window 31 is preferably composed of a concave lens as shown in FIG. In the endoscope 10, an image collected by the observation window 31 is transmitted to the eyepiece unit 14 using a fiber 13 made of quartz or the like which will be described later. Thus, when the observation window 31 is formed of a normal lens, the field of view of the endoscope 10 becomes narrow. Therefore, the endoscope 10 can ensure a wide-angle visual field range by configuring the observation window 31 from a concave lens.

  As shown in FIGS. 4 and 5, the endoscope 10 includes an insertion portion 11 to be inserted into the inside 1 i of the sheath 1 and an eyepiece portion 14 provided on the proximal end side of the insertion portion 11. The main part is composed.

  A fiber 13 made of quartz or the like is provided along the insertion direction S in the inside covered with the outer skin 12 of the insertion portion 11. Further, as shown in FIG. 5, the tip of the tip side portion protruding forward from the tip of the outer skin 12 of the fiber 13 in the insertion direction S (hereinafter simply referred to as the front) is along the insertion direction S in the lens frame 27. In addition to the observation window 31 described above, a plurality of lenses 28 are provided on the distal end side of the through hole.

  Further, the outer periphery of the lens frame 27 is covered with a distal end side portion of the tubular member 26. Note that the proximal end portion of the tubular member 26 covers the outer periphery other than the portion fitted in the through hole of the lens frame 27 in the distal end portion protruding forward from the distal end of the outer skin 12 of the fiber 13. Further, the outer periphery of the lens frame 27 is covered with a base 29.

  Further, as shown in FIG. 4, the proximal end side of the fiber 13 is inserted into the eyepiece 14. Specifically, the fixing member 16 is fixed inside the base end side of the exterior member 14 g, and through holes 16 i 1 and 16 i 2 are formed in the fixing member 16 along the insertion direction S. The through hole 16i2 has a larger diameter than the through hole 16i1.

  A through-hole 16 i 1 on the distal end side is provided with a base 17 in which the base end side of the fiber 13 is fixed inside. Two bases 17 are attached to the fixing member 16 along the outer diameter direction R of the endoscope 10. It is fixed to the fixing member 16 by each angle adjusting screw 18 inserted through the formed through hole.

  Further, a lens frame 19 having, for example, a spherical outer shape is fixed to the base end side of the base 17. The lens frame 19 has a plurality of lenses 20 therein and is located in the through hole 16i2.

  In addition, a fixing member 21 is fitted and fixed to the inner periphery of the through hole 16i2 on the proximal end side, and an eyepiece member 24 is fitted to the outer periphery of the fixing member 21 on the proximal end side. Although not shown, an imaging unit 43 (see FIG. 2) can be freely attached to the eyepiece member 24, and an image of the test site T imaged by the CCD of the imaging unit 43 is displayed on the LCD display unit 41 ( (See FIG. 2). Further, a lens frame 22 having a plurality of lenses 23 is fixed inside the fixing member 21.

  Here, when the lens frame 22 and the lens frame 19 are provided in the eyepiece 14, the focus adjustment between the plurality of lenses 23 and the plurality of lenses 20 must be performed. That is, it is necessary to make the optical axes of the lens 23 and the lens 20 coincide.

  Therefore, in the endoscope 10, the lens frame 19 fixed to the base end side of the base 17 by rotating the base 17 using each angle adjusting screw 18 is rotated as shown in FIG. Can be moved. Thus, the endoscope 10 has a configuration that can easily adjust the focus of the plurality of lenses 20 with respect to the plurality of lenses 23.

  Therefore, even if the rear end surface 13t of the fiber 13 is tilted and assembled, the lens frame 19 fixed to the base end side of the base 17 is rotated by using the angle adjusting screws 18, thereby the lens. The focal length of the lens 20 with respect to the lens 23 can be easily adjusted.

  In the endoscope 10 having this configuration, the lens frame 19 is rotated by moving the base 17 using the angle adjusting screw 18. However, the present invention is not limited thereto, and the base 17, the lens frame 19, The base 17 and the lens frame 19 may have a configuration that can be moved separately by an angle adjusting screw. Thereby, the position adjustment of the rear end surface 13t of the fiber 13 and the rotation of the lens frame 19 can be performed separately.

  Returning to FIG. 1, a fixing member for fixing the distal end side of the sheath 1 to the inside of the duct 100 on the outer periphery of the distal end side of the sheath 1, specifically, an expansion that can be expanded in the outer diameter direction R of the sheath 1. A balloon 4 as a member is provided.

  The balloon 4 is a member that expands and contracts in the outer diameter direction R when air is supplied / blocked. The balloon 4 has a distal end of a balloon tube 5 provided along the insertion direction S on the outer periphery of the sheath 1. It is connected. The base end of the balloon tube 5 is connected to the balloon pump 6, and the balloon pump 6 is driven and controlled by the balloon pump control unit 7. The balloon tube 5 may be provided inside the sheath 1.

  Therefore, the balloon 4 is inflated in the outer diameter direction R by the air supplied from the balloon pump 6 driven by the drive control of the balloon pump control unit 7 through the balloon tube 5. As a result, as shown in FIG. 6, the distal end side of the sheath 1 is fixed by the inflated balloon 4 in the conduit 100.

  Further, on the outer periphery of the sheath 1, a base 200 that is slidable back and forth along the insertion direction S with respect to the outer periphery of the sheath 1 is provided on the base end side of the balloon 4. Is connected at the outer periphery of the sheath 1 to the tip of a resin supply tube 3 which is a resin injection tube provided along the insertion direction S. The resin supply tube 3 may be provided inside the sheath 1. The base end of the resin supply tube 3 is connected to a resin pump 8, and the resin pump 9 is connected to a resin tank 9 that is a resin supply source in which a resin such as urethane foam is stored. Yes. The resin pump 8 is driven and controlled by the resin control unit 35.

  Therefore, the resin in the resin tank 9 is injected into the pipe line 100 from the tip opening 3 h of the resin supply tube 3 by the resin pump 8 driven by the drive control of the resin control unit 35.

  As shown in FIG. 6, the resin sprayed from the tip opening 3 h is supplied to a plurality of positions P in FIG. 6 by moving the base 200 along the insertion direction S. Thereafter, the supplied resin is cured, whereby the sheath 1 is completely fixed in the conduit 100.

  In order to use the resin to fix the sheath 1 to the inside of the pipe line 100, the air in the balloon 4 escapes when used for a long period only by fixing with the balloon 4, that is, the balloon 4 This is because when the balloon 4 alone is fixed, the distal end side of the sheath 1 may be unfixed with long-term use.

  Therefore, it is preferable that the inflated balloon 4 is contracted after the resin is cured. For this reason, the balloon 4 is used when the distal end side of the sheath 1 is temporarily fixed in the conduit 100, and the resin is used when the sheath 1 is permanently fixed in the conduit 100.

  In addition, as shown in FIG. 6, when the conduit 100 has a complicated structure having a plurality of bent portions 101, 102, etc., after temporary fixing of the distal end side of the sheath 1 by expansion of the balloon 4, By pulling the sheath 1 rearward and further supplying resin in a state where the outer periphery of the sheath 1 is in contact with the surface 102 i of the bent portion 102 and the surface 101 t of the bent portion 101, the sheath 1 is connected to the conduit 100. By fixing inside, it can fix more reliably.

  As shown by the dotted line in FIG. 6, if the portion of the sheath 1 on the proximal end side with respect to the balloon 4 is slack in the duct 100, the sheath 1 may be temporarily fixed using the balloon 4. 1 may be distorted in the outer diameter direction R from the state of being directly opposed to the test site T, and sufficient observation of the test site T using the endoscope 10 in the sheath 1 may not be performed. Because there is.

  Further, the portion of the sheath 1 positioned outside the conduit 100 can be more reliably fixed by fixing the sheath 1 to the insertion port 100e of the conduit 100 with the sheath 1 being pulled backward.

  This is because if the portion of the sheath 1 located outside the conduit 100 is not fixed to the insertion port 100e of the conduit 100, the portion of the sheath 1 located outside the conduit 100 is unexpectedly pulled or relaxed. This is because even if the distal end side of the sheath 1 is temporarily fixed using the balloon 4, the distal end side of the sheath 1 may be shaken in the outer diameter direction R.

  Therefore, hereinafter, referring to FIG. 1 and FIG. 6, the configuration in which the sheath 1 temporarily fixed by the balloon 4 is pulled backward and the portion of the sheath 1 located outside the conduit 100 are defined as the insertion port 100 e of the conduit 100. The structure fixed with respect to is shown.

  As shown in FIGS. 1 and 6, a pipe fixing portion 36 having a flange portion 36 f at the proximal end is slidably fitted in the insertion direction S with respect to the outer periphery of a portion located outside the conduit 100 of the sheath 1. Further, a traction operation ring 37 is slidably fitted in the insertion direction S on the rear side of the pipe fixing portion 36, and further, the traction operation ring is provided on the rear side of the traction operation ring 37. A traction body portion 39 that is screwed to 37 by a screw 38 is slidably fitted in the insertion direction S.

  In addition, a protrusion 39t protruding in the inner diameter direction of the outer diameter direction R is formed in the middle position in the insertion direction S of the traction body 39, and the insertion is provided behind the protrusion 39t of the traction body 39. An O-ring 141 is fitted to the outer periphery of a portion located outside the conduit 100 of the sheath 1 so as to come into contact with the protrusion 39t in the direction S. Further, a sheath fixing ring 40 that can be screwed to the inner peripheral surface of the base end side of the traction trunk portion 39 is provided behind the O-ring 141 with respect to the outer periphery of the portion of the sheath 1 located outside the pipe line 100. It is slidably fitted in the insertion direction S.

  The pipe fixing portion 36 has a shape in which the distal end side is inclined, and the inclined portion is fitted into the conduit 100 from the insertion port 100 e of the conduit 100. The flange portion 36f is in contact with the outer wall of the insertion port 100e. Therefore, the flange portion 36f does not enter the pipe line 100.

  The sheath fixing ring 40 advances forward in the insertion direction S by screwing, thereby crushing the O-ring 141 against the protrusion 39t. As a result, the O-ring 141 expands inward in the outer diameter direction R, whereby the outer periphery of the sheath 1 is fixed to the traction trunk portion 39 by the expanded O-ring 141.

  Further, the towing operation ring 37 is rotatable in a state of being in contact with the base end surface of the pipe fixing portion 36, so that the outer periphery of the sheath 1 is fixed to the towing body portion 39 by the O-ring 141. In this state, the sheath 1 does not enter further forward in the insertion direction S.

  In addition, since the traction operation ring 37 is screwed to the traction body portion 39 via a screw 38, the outer periphery of the sheath 1 is fixed to the traction body portion 39 by the O-ring 141. If the ring 37 for traction operation is rotated, the space | interval Q of the insertion direction S of the traction trunk | drum 39 with respect to the ring 37 for traction operation can be changed freely. That is, when the pulling operation ring 37 is rotated in one direction so that the interval Q is increased, the sheath 1 is pulled backward.

  Therefore, the pipe fixing portion 36, the traction operation ring 37, the screw 38, the traction trunk portion 39, the sheath fixing ring 40, and the O-ring 141 are located at positions outside the pipeline 100 of the sheath 1 in the present invention. A pulling member that pulls the sheath whose distal end side is fixed in the pipe line 100 by the balloon 4 backward is fixed.

  The reason why the sheath 1 is pulled using the various pulling members described above is that, if manually performed, the sheath 1 must be pulled until the resin is cured, which is very complicated for the operator. is there.

Next, the operation of the present embodiment will be described. ◎
First, the operator inserts the insertion portion 11 of the endoscope 10 in which the imaging unit 43 is attached to the eyepiece 14 into the sheath 1, and the tip of the insertion portion 11 is tapered to the inside 1 i of the sheath 1. Fix to part 2.

  Thereafter, the operator inserts the sheath 1 into the conduit 100 from the insertion port 100e of the conduit 100, and displays an image captured by the CCD of the imaging unit 43 on the LCD, as shown in FIGS. While observing with the part 41, the observation window 31 is made to oppose the test site T.

  At this time, when the insertion unit 11 has the bending portion 11w (see FIG. 2), the operator performs the bending operation while viewing the image displayed on the LCD display unit 41, thereby the bending control unit 42. The bending portion 11w is bent by the bending operation control (see FIG. 2), and the observation window 31 is opposed to the test site T. In this state, as shown by a dotted line in FIG. 6, the portion of the sheath 1 located in the vicinity of the bent portion 102 is in a state where it sag toward the surface 102 t of the bent portion 102.

  Next, the operator drives the balloon pump 6 by the drive control of the balloon pump control unit 7 by a known operation, and supplies air to the balloon 4 via the balloon tube 5. As shown, the balloon 4 is expanded in the outer diameter direction R. As a result, the distal end side of the sheath 1 is temporarily fixed in the conduit 100. At this time, the observation window 31 may be inclined with respect to the test site T.

  Thereafter, the operator inserts the distal end side of the pipe fixing portion 36 until the flange portion 36f contacts the outer wall of the insertion port 100e. In addition, the operator rotates the sheath fixing ring 40.

  As a result, the O-ring 141 is crushed against the protrusion 39t, and the O-ring 141 expands inward in the outer diameter direction R. As a result, the outer periphery of the sheath 1 is fixed to the traction body portion 39 by the expanded O-ring 141.

  Next, the operator rotates the traction operation ring 37 in a state where the ring 37 is brought into contact with the proximal end of the pipe fixing portion 36. As a result, the distance Q between the traction body portion 39 and the traction operation ring 37 is increased by the screw 38, and the sheath 1 fixed to the traction body portion 39 is pulled backward.

  This pulling is performed until the outer periphery of the sheath 1 comes into contact with one surface 102 i of the bent portion 102 and one surface 101 t of the bent portion 101. By this pulling, the observation window 31 faces the test site T.

  Next, the operator drives the resin pump 8 by drive control of the resin control unit 35 by a known operation, so that the resin in the resin tank 9 passes through the resin supply tube 3 to the front end opening 3h. Then, as shown in FIG.

  At this time, the resin is supplied to a plurality of positions P by sliding the base 200 back and forth in the insertion direction S by known means. Thereafter, the resin is cured, so that the sheath 1 is completely fixed in the conduit 100.

  Finally, the operator stops the driving of the balloon pump 6 by the driving control of the balloon pump control unit 7 by a known operation and contracts the balloon 4 in the outer diameter direction R. Note that after the sheath 1 is fixed in the duct 100, the insertion portion 11 of the endoscope 10 can be inserted into and removed from the inside 1i of the sheath 1 any number of times.

  Thus, in the present embodiment, after inserting the sheath 1 into the conduit 100, the distal end side of the sheath 1 is temporarily fixed in the conduit 100 using the expansion of the balloon 4, and thereafter The sheath 1 is pulled backward using the various pulling members 36 to 40, 141, and a portion of the sheath 1 located outside the conduit 100 is fixed to the insertion port 100e into the conduit 100. Finally, for resin supply It has been shown that resin is supplied into the pipe line 100 from the opening 3h of the tube 3 and the sheath 1 is fixed in the pipe line 100 by the cured resin.

  According to this, since the sheath 1 is not only fixed by the hardened resin in the conduit 100, but the portion outside the conduit 100 of the sheath 1 is fixed to the insertion port 100e. In the state, even if a portion of the sheath 1 located outside the conduit 100 is unexpectedly pulled or loosened, the position of the sheath 1 does not move back and forth with respect to the insertion direction S.

  As described above, the endoscope apparatus having a configuration that can prevent the unexpected movement of the insertion portion 11 held in the sheath 1 in the duct 100 and can reliably fix the distal end side of the insertion portion 11 for a long period of time. 50 can be provided.

  Hereinafter, a modification will be described with reference to FIG. FIG. 7 is a partial cross-sectional view showing a modification in which the distal end side of the sheath is fixed by a hook protruding from a pipe line along an insertion direction different from the hole into which the insertion portion of the sheath is inserted. In the present embodiment, it is shown that the balloon 4 is used when the distal end side of the sheath 1 is temporarily fixed in the duct 100. However, the present invention is not limited to this, and as shown in FIG. 11 is provided with a pipe line 42 along the insertion direction S different from the hole into which the pipe 11 is inserted, and a hook 143 that is a locking member protruding from the distal end opening of the pipe line 42 via the pipe line 42. The distal end side of the sheath 1 may be temporarily fixed in the pipe line 100 by locking to the pipe line 100 used. Of course, the hook 143 and the balloon 4 may be used in combination.

  Still another modification is shown in FIG. FIG. 8 is a partial perspective view showing a configuration of a modified example in which the distal end side of the sheath is fixed by the key portion.

  As shown in FIG. 8, a base 70 is provided at the distal end of the sheath 1, and a key portion 81 that is a locking member is provided on the outer peripheral surface of the base 70. The key portion 81 constitutes a fixing member that fixes the distal end side of the sheath 1 in the conduit 100 by being locked in the conduit 100.

  Although not shown, also in this embodiment, the resin may be supplied after fixing using the key portion 81.

  Other configurations are the same as those of the first embodiment described above. Even with such a configuration, the same effects as those of the first embodiment described above can be obtained.

  The key portion 81 may also be provided directly on the outer periphery of the distal end portion of the insertion portion 11 when the sheath 1 is not used.

(Second Embodiment)
FIG. 9 is a partial perspective view showing the distal end side of the sheath in the endoscope apparatus showing the present embodiment.

  The configuration of the endoscope apparatus of the second embodiment is such that the distal end side of the sheath is placed in the duct as compared with the endoscope apparatus of the first embodiment shown in FIGS. The difference is that the expansion member that can be expanded in the outer diameter direction, which is a fixing member that is temporarily fixed, is composed of a spring-shaped expansion member that spreads radially from the outer periphery of the sheath in the outer diameter direction instead of the balloon. Therefore, only this difference will be described, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof will be omitted.

  As shown in FIG. 9, in the present embodiment, an expansion member that is expandable in the outer diameter direction, which is a fixing member that temporarily fixes the distal end side of the sheath 1 in the conduit 100 on the outer periphery of the distal end side of the sheath 1. Specifically, a spring-like member 62 is provided in which a plurality of spring members 62b spread radially from the outer periphery of the distal end of the sheath 1. When the distal end side of the sheath 1 does not need to be fixed in the duct 100, the plurality of spring members 62b are substantially parallel to the outer peripheral surface of the sheath 1 by a spring-like member presser 60 described later. Is closed.

  Further, on the outer periphery of the sheath 1, a spring-like member presser 60 that is pulled backward by a pulling wire 61 is provided behind the spring-like member.

  When the distal end side of the sheath 1 does not need to be fixed in the duct 100, the spring-like member presser 60 locks the plurality of spring members 62b so that the plurality of spring members 62b are moved to the outer periphery of the sheath 1. When the distal end side of the sheath 1 is fixed in the conduit 100, it is moved backward by the pulling wire 61 to release the lock. The plurality of spring members 62b are configured to expand radially by the force of the spring.

  As a result, the distal ends of the sheath 1 are fixed in the pipe line 100 by the extended ends of the plurality of expanded spring members 62 b coming into contact with the inner peripheral surface of the pipe line 100.

  Furthermore, since the sheath 1 is pulled in a form that resists an appropriate spring force by the spring material, the whole is stably fixed.

  In addition, since the insertion portion 11 can be positioned at the center with respect to the pipe line 100 by being configured to expand radially, compared to the case where the insertion part 11 is fixed along the pipe line 100. It can be made difficult to be affected by the inclination of the pipe line itself.

  Although not shown, also in the present embodiment, the resin may be supplied after fixing using the spring-like member 62.

  Further, the method of pulling the sheath 1 rearward and the method of fixing the sheath 1 to the insertion port 100e at a position outside the conduit 100 are the same as in the first embodiment described above.

  In addition, the configuration is the same as that of the first embodiment described above except that the balloon tube 5, the balloon pump 6, and the balloon pump control unit 7 are not provided. Even with such a configuration, the same effects as those of the first embodiment described above can be obtained.

(Third embodiment)
FIG. 10 is a partial cross-sectional view showing a state in which the distal end side of the sheath in the endoscope apparatus showing the present embodiment is inserted into the duct and fixed in the duct.

  The configuration of the endoscope apparatus according to the third embodiment is such that the expansion member is configured by a plate-like spring member as compared with the endoscope apparatus according to the second embodiment shown in FIG. 9 described above. Is different. Therefore, only this difference will be described, the same reference numerals are given to the same components as those in the second embodiment, and the description thereof will be omitted.

  In the second embodiment described above, the spring-like member 62 that has been expanded once cannot be closed using the pulling wire 61. Therefore, in the present embodiment, an expansion member that can be expanded and contracted is provided.

  Specifically, as shown in FIG. 10, the distal end surface of the sheath 1 is provided with a fixed base 65 having a substantially L-shaped cross section that protrudes in the outer diameter direction R and is bent substantially parallel to the outer peripheral surface of the sheath 1. On the outer peripheral surface of the sheath 1, a slider member 66 slidable back and forth by a pipe 67 along the insertion direction S is fitted behind the fixed base 65 along the insertion direction S.

  In addition, to the fixed base 65, one end of an expansion member that is a fixing member for fixing the distal end side of the sheath 1 in the pipe line 100, specifically, a plate-like spring member 68 is fixed. The other end of the plate-like spring member 68 is fixed.

  In the present embodiment, a convex portion 11t that is a position fixing member that protrudes in the outer diameter direction R is provided on the outer periphery of the distal end of the endoscope 10, and the convex portion 11t is locked to the fixed base 65. Thus, the position of the insertion portion 11 with respect to the sheath 1 is defined. Of course, the position of the insertion portion 11 with respect to the sheath 1 may be determined by using the tapered portion 2 of the inside 1i of the sheath 1 as in the first embodiment, without using the convex portion 11t.

  According to such a configuration, the plate-like spring member 68 can be expanded and contracted in the outer diameter direction R. Specifically, on the other hand, when the distal end side of the sheath 1 is not fixed in the conduit 100, the slider member 66 is slid backward using the pipe 67 to expand the plate-like spring member. 68 is positioned substantially parallel to the outer peripheral surface of the sheath 1. That is, the plate-like spring member 68 contracts in the outer diameter direction R. On the other hand, when the distal end side of the sheath 1 is fixed in the conduit 100, the slider member 66 is slid forward using the pipe 67 so that one end and the other end are fixed to the fixed base 65 and the slider member 66. As shown in FIG. 10, the plate-like spring member 68 is curved and expands in the outer diameter direction R.

  In this state, the sheath 1 is fixed in the conduit 100 by engaging a part of the plate-like spring member 68 expanded in the outer diameter direction R with the bent portion 105 in the conduit 100. still. As shown in the first embodiment, the proximal end side of the sheath 1 is not pushed forward because the sheath 1 is pulled backward and then fixed to the insertion port 100e. Even if only a part of the expanded plate-like spring member 68 is locked to the bent portion 105 in the duct 100, the distal end side of the sheath 1 is sufficiently fixed in the duct 100.

  Thereafter, when it is no longer necessary to fix the distal end side of the sheath 1 in the conduit 100, the slider member 66 is slid backward again using the pipe 67, so that the plate-like spring member 68 is 1 is located substantially parallel to the outer peripheral surface of 1. Thus, the plate-like spring member 68 can be expanded and contracted by the slider member 66.

  Although not shown, also in the present embodiment, the resin may be supplied after fixing using the plate-like spring member 68.

  Other configurations are the same as those of the second embodiment described above. Even with such a configuration, the same effects as those of the second embodiment described above can be obtained.

(Fourth embodiment)
FIG. 11 is a partial perspective view showing the distal end side of the sheath in the endoscope apparatus showing the present embodiment.

  Compared with the endoscope apparatus of the third embodiment shown in FIG. 10 described above, the configuration of the endoscope apparatus of the fourth embodiment is that the expansion member is composed of a support plate and an expansion plate. Is different. Therefore, only this difference will be described, the same reference numerals are given to the same components as those in the third embodiment, and description thereof will be omitted.

  As shown in FIG. 11, a slider tube 71 is fitted to the outer periphery of the distal end side of the sheath 1 so as to be slidable back and forth in the insertion direction S, and the distal end of the sheath 1 is disposed at the distal end of the slider tube 71. One end of a support plate 73 that is a fixing member and an expansion member that fixes the side in the pipe line 100 is rotatably connected via a rotation shaft 75.

  In addition, one end of an expansion plate 72 that is a fixing member and an expansion member that fixes the distal end side of the sheath 1 to the inside of the duct 100 is rotatably connected to the outer periphery of the distal end of the sheath 1 via a rotation shaft 75. In addition, the other end of the support plate 73 is rotatably connected to a midway position of the extension plate 72 via a rotation shaft 74.

  According to such a configuration, the expansion plate 72 and the support plate 73 can expand and contract in the outer diameter direction R. Specifically, on the other hand, when the distal end side of the sheath 1 is not fixed in the conduit 100, the expanded expansion plate 72 and the support plate 73 are rotated by sliding the slider tube 71 rearward. The movement shafts 74 and 75 are positioned substantially parallel to the outer peripheral surface of the sheath 1 by rotation in one direction. That is, the expansion plate 72 and the support plate 73 contract in the outer diameter direction R. On the other hand, when the distal end side of the sheath 1 is fixed in the conduit 100, the expansion plate 72 and the support plate 73 are rotated as shown in FIG. 11 by sliding the slider tube 71 forward. 74 and 75 are expanded in the outer diameter direction R by rotation in the other direction opposite to one direction.

  In this state, the sheath 1 is fixed in the conduit 100 by bringing the expanded end of the expanded expansion plate 72 into contact with the conduit 100.

  Thereafter, when it is no longer necessary to fix the distal end side of the sheath 1 in the conduit 100, the slider tube 71 is slid again to rotate backward in one direction of the rotating shafts 74 and 75. The extension plate 72 and the support plate 73 are positioned substantially parallel to the outer peripheral surface of the sheath 1.

  As described above, the expansion plate 72 and the support plate 73 can be expanded and contracted by the slider tube 71.

  Although not shown, also in this embodiment, the resin may be supplied after fixing using the expansion plate 72 and the support plate 73.

  Other configurations are the same as those of the third embodiment described above. Even with such a configuration, the same effects as those of the third embodiment described above can be obtained.

(Fifth embodiment)
FIG. 12 is a partial perspective view showing the distal end side of the sheath in the endoscope apparatus showing the present embodiment.

  The configuration of the endoscope apparatus according to the fifth embodiment includes the endoscope apparatus according to the first embodiment shown in FIGS. 1 to 6 and the endoscope according to the second embodiment shown in FIG. Compared to the device, the endoscope device of the third embodiment shown in FIG. 10 and the endoscope device of the fourth embodiment shown in FIG. A different point is that a plurality of sheaths inserted in the pipe line are provided in a portion along the insertion direction of the sheath. Therefore, only this difference is demonstrated, the same code | symbol is attached | subjected to the structure similar to 1st-4th embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 12, a convex portion 77 protruding in the outer diameter direction R is provided on the outer periphery on the distal end side of the sheath 1. In addition, a plurality of expansion members 78 that are expandable in the outer diameter direction R of the sheath 1 are slidably fitted along the insertion direction S together with the intermediate pipe 79 on the outer periphery of the portion to be inserted into the conduit of the sheath 1. It is free.

  Specifically, a plurality of expansion members 78, intermediate pipes 79, expansion members 78, and intermediate pipes 79 are arranged in order on the outer periphery of the portion to be inserted into the sheath 1. .

  The expansion member 78 includes a spring-like expansion portion 78k that expands only when pressed in the insertion direction S. Therefore, after the expansion member 78 is slid and fitted until the first expansion member 78 abuts against the convex portion 77 at the distal end of the sheath 1, the intermediate pipe 79 is slid and moved until the expansion member 78 abuts. The next expansion member 78 is slid until the next expansion member 78 comes into contact with the intermediate pipe 79, and the next intermediate pipe 79 is slid and fitted until it comes into contact with the previous expansion member 78. When this operation is performed until the plurality of expansion members 78 and the intermediate pipes 79 fill the outer periphery of the portion to be inserted into the conduit of the sheath 1, the expansion portions 78 k of the expansion members 78 are formed by the intermediate pipes 79. , Expand in the outer diameter direction R. Using this expansion, the sheath 1 is fixed in the conduit 100. In addition, when it is desired to release the fixation, if the plurality of expansion members 78 and the intermediate pipe 79 are removed from the outer periphery of the sheath 1, the expansion portion 78k contracts, so that the fixation is released.

  At this time, the expansion member 78 that comes into contact with the convex portion 77 constitutes a fixing member that fixes the distal end side of the sheath 1 in the conduit 100.

  Although not shown, also in the present embodiment, resin may be supplied after fixing using a plurality of expansion members 78.

  Other configurations are the same as the configurations of the first to fourth embodiments described above. Even with such a configuration, the same effects as those of the first to fourth embodiments described above can be obtained.

  Hereinafter, a modification will be described with reference to FIG. FIG. 13 is a partial perspective view showing a modified example in which the sheath 1 is inserted through an eccentric position of the expansion member of FIG.

  As shown in FIG. 13, the hole through which the sheath 1 of the expansion member 78 is inserted may be eccentric from the center. According to this, the magnitude | size of expansion of the expansion part 78k of the expansion member 78 can be varied in the upper and lower sides in FIG. At this time, the convex portion 1v is formed along the insertion direction S on the outer peripheral surface of the sheath 1, and the convex portion 1v is fitted to the inner peripheral surface of the hole through which the sheath 1 of the expansion member 78 is inserted. If the sheath 1 is inserted into the hole of the expansion member 78 so that the groove 78m is formed and the convex portion 1v is fitted in the groove 78m, the sheath 1 rotates in the hole in the expansion member 78, and the expansion part It is possible to prevent the extension direction of 78k from being different from the desired direction.

  In the first to fifth embodiments described above, the balloon 4, which is an expansion member, the spring-like member 62, the plate-like spring member 68, the expansion plate 72 and the support plate 73, and the expansion member 78 are the same as those of the sheath 1. Although the example provided in the outer peripheral surface was shown, when not using the sheath 1, you may provide in the outer peripheral surface of the insertion part 11. FIG. That is, you may fix the insertion part 11 in the pipe line 100 directly using various expansion members.

  Further, since the insertion portion 11 is fixed along the pipe line 100, it is less affected by the diameter of the pipe line than the case where the balloon as in the first embodiment described above is used, and is stably inserted. The part 11 can be fixed to the pipe line 100.

(Sixth embodiment)
FIG. 14 is a partial perspective view showing the distal end side of the sheath in the endoscope apparatus showing the present embodiment.

  The configuration of the endoscope apparatus according to the sixth embodiment includes the endoscope apparatus according to the first embodiment shown in FIGS. 1 to 6 and the endoscope according to the second embodiment shown in FIG. Compared with the apparatus, the endoscope apparatus of the third embodiment shown in FIG. 10, and the endoscope apparatus of the fourth embodiment shown in FIG. 11, the fixation of fixing the distal end side of the sheath in the conduit The difference is that a protruding member protruding from the side surface of the sheath is used as the member. Therefore, only this difference is demonstrated, the same code | symbol is attached | subjected to the structure similar to 1st-4th embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 14, the sheath 1 in the present embodiment includes an inner tube 90 and an outer tube 91 covered on the outer side of the inner tube 90. A space 92 is formed between the inner tube 90 and the outer tube 91.

  Further, for example, two openings 96 communicating with the space 92 are formed on the side surface on the distal end side of the outer tube 91.

  Protruding members 93, 94 that can advance and retreat in the insertion direction S are inserted into the space 92, and the protruding members 93, 94 can protrude in the outer diameter direction R from the space 92 through the openings 96. It has become.

  Moreover, the support part 95 comprised, for example from rubber | gum is provided in the protrusion edge part of the protrusion members 93 and 94, respectively. The projecting members 93 and 94 constitute a fixing member that fixes the distal end side of the sheath 1 in the duct 100.

  According to such a configuration, when it is desired to fix the distal end side of the sheath 1 in the pipe line 100, first, the operator pushes the protruding members 93 and 94 forward in the space 92, and from the opening 96 to the outside. Projecting members 93 and 94 project in the radial direction R, and support portions 95 abut against the upper surface 100j of the conduit 100 in FIG.

  As a result, the sheath 1 is pressed against the lower surface 100 k of the conduit 100 in FIG. 14, and as a result, the sheath 1 is fixed in the conduit 100. The fixing may be performed by abutting the support portions 95 of the projecting members 93 and 94 on the lower surface 100k and pressing the sheath 1 on the upper surface 100j.

  Further, when releasing the fixation of the sheath 1, the operator pulls the projecting members 93 and 94 rearward to retract the projecting members 93 and 94 into the space 92 through the opening 96. good.

  Although not shown, also in the present embodiment, the resin may be supplied after fixing using the protruding members 93 and 94.

  Other configurations are the same as the configurations of the first to fourth embodiments described above. Even with such a configuration, the same effects as those of the first to fourth embodiments described above can be obtained.

(Seventh embodiment)
15 is a partial perspective view showing the distal end side of the sheath in the endoscope apparatus showing the present embodiment, and FIG. 16 shows a state where the distal end side of the sheath in FIG. 15 is bent and fixed in the duct. It is a fragmentary sectional view.

  The configuration of the endoscope apparatus of the seventh embodiment is a protrusion that protrudes forward in the insertion direction on the distal end surface of the sheath as compared with the endoscope apparatus of the sixth embodiment shown in FIG. 14 described above. The difference is that the member is provided and a plurality of cuts are formed on the distal end side of the sheath. Therefore, only this difference will be described, the same reference numerals are given to the same components as those in the seventh embodiment, and description thereof will be omitted.

  As shown in FIG. 15, a protruding member 112 that protrudes forward in the insertion direction S is provided on the distal end surface of the base 110 provided at the distal end of the sheath 1. A protruding end portion of the protruding member 112 is provided with a support portion 113 made of rubber.

  A plurality of cuts 115 are formed on the side surface on the distal end side of the sheath 1. Further, in the sheath 1, the pulling wire 114 is inserted along the insertion direction S into holes other than the hole through which the insertion portion 11 is inserted, and the tip of the pulling wire 114 is the tip of the base 110 of the sheath 1. 111 is fixed.

  The pulling wire 114 bends the distal end side of the sheath 1 in which the plurality of cuts 115 are formed, and the protruding member 112 is bent so as to abut against the upper surface 100j in the duct 100 in FIG. 16, as shown in FIG. It constitutes a member. The sheath 1 is pressed against the lower surface 100k of the pipe line 100 by the support portion 113 of the protruding member 112 being abutted against the upper surface 100j. As a result, the sheath 1 is fixed in the conduit 100.

  Therefore, the protruding member 112 constitutes a fixing member that fixes the distal end side of the sheath 1 in the duct 100.

  Further, in a state where the distal end side of the sheath is bent by the pulling wire 114, the insertion portion 11 facing the opening 1d before the bending is positioned at the most proximal side among the plurality of cuts 115 as shown in FIG. It projects from the notch 115k to the front in the insertion direction S.

  Although not shown, also in this embodiment, resin may be supplied after fixing using the protruding member 112.

  Other configurations are the same as those of the above-described sixth embodiment. Even with such a configuration, the same effects as those of the sixth embodiment described above can be obtained.

  In the first to seventh embodiments described above, the subject has been described by taking the pipeline as an example, but it is needless to say that the subject is not limited to the pipeline. Moreover, even if a pipe line has a linear shape which does not have the some bending parts 101 and 102, it is applicable.

DESCRIPTION OF SYMBOLS 1 ... Sheath 1i ... Inside 2 ... Tapered part (position fixing member)
3. Resin supply tube (resin injection tube)
4. Balloon (fixing member) (expansion member)
9 ... Resin tank (resin supply source)
DESCRIPTION OF SYMBOLS 10 ... Endoscope 11 ... Insertion part 11t ... Convex part (position fixing member)
36 ... Pipe fixing part (traction member)
37 ... Ring for traction operation (traction member)
38 ... Screw (traction member)
39 ... Traction body part (traction member)
40. Ring for fixing sheath (traction member)
50 ... Endoscope device 62 ... Spring-like member (fixing member) (expansion member)
68 ... Plate-shaped spring member (fixing member) (expansion member)
72. Expansion plate (fixing member) (expansion member)
73 ... Support plate (fixing member) (expansion member)
78 ... Expansion member (fixing member) (expansion member)
81 ... Key part (fixing member) (locking member)
90 ... Inner tube (first tube)
91 ... Outer tube (second tube)
92 ... space 93 ... projecting member (fixing member)
94. Projecting member (fixing member)
96 ... Opening 112 ... Protruding member (fixing member)
100 ... Pipe line (subject)
100e ... Insertion port 114 ... Bending wire (bending member)
115 ... notch 115k ... notch located on the proximal end side 141 ... O-ring (traction member)
143 ... Hook (locking member)
R: Outer diameter direction S: Insertion direction

Claims (9)

An endoscope having an elongated insertion portion that is inserted into a subject, and a sheath that is inserted into the subject together with the insertion portion that is inserted through the endoscope. In an endoscopic device,
A fixing member that is provided on an outer periphery of the sheath in the insertion direction on the distal side, and that fixes the distal side of the sheath to the inside of the subject;
By injecting resin into the subject, which is slidably moved back and forth in the insertion direction with respect to the outer periphery of the sheath, at least a part of the sheath is directed into the subject. A resin injection tube fixed by the resin,
A resin supply source connected to the resin injection tube;
An endoscope apparatus characterized by comprising: The sheath, which is provided on the outer periphery of a portion located outside the subject of the sheath and the distal end side of which is fixed inside the subject by the fixing member, is pulled backward in the insertion direction and pulled. The endoscope apparatus according to claim 1, further comprising a pulling member that fixes a portion of the sheath located outside the subject to an insertion port into the subject .   The position fixing member which fixes the position of the said insertion part with respect to the said sheath in the front end side of the said insertion direction in at least one of the said sheath and the said insertion part is provided. Endoscope device.   The endoscope apparatus according to claim 1, wherein the fixing member is an expansion member that is expandable in an outer diameter direction of the sheath. With respect to the outer periphery of the sheath, a plurality of expansion members that are expandable in the outer diameter direction of the sheath are freely fitted along the insertion direction,
The sheath is fixed in the subject along the insertion direction by the plurality of expansion members, and the expansion member located on the distal end side in the insertion direction constitutes the fixing member. The endoscope apparatus according to any one of claims 1 to 3.   The endoscope according to any one of claims 1 to 3, wherein the fixing member is a locking member that locks the distal end side of the sheath in the insertion direction in the subject. apparatus. The sheath includes a first tube and a second tube coated on an outer periphery of the first tube, and an outer periphery of the first tube and an inner periphery of the second tube. A space is formed between
The fixing member is a protruding member that can freely protrude from the space through an opening on a side surface of the second tube, and the protruding member is abutted against the subject after the protrusion, whereby the sheath is The endoscope apparatus according to claim 1, wherein the endoscope apparatus is fixed in a subject. A projecting member provided on the distal end surface of the sheath and projecting forward in the insertion direction;
A plurality of cuts formed on the side surface on the distal side in the insertion direction of the sheath;
A bending member that curves the distal end side in the insertion direction of the sheath in which the plurality of cuts are formed, and abuts the protruding member against the subject;
Further comprising
The protruding member constitutes the fixing member that fixes the distal end side of the sheath to the subject,
In a state where the distal end side of the sheath in the insertion direction is bent by the bending member, the insertion portion moves forward in the insertion direction from the cut located on the proximal end side in the insertion direction among the plurality of cuts. The endoscope apparatus according to claim 1, wherein the endoscope apparatus is protruded.   An endoscope having an elongated insertion portion that is inserted into a subject, and a sheath that is inserted into the subject together with the insertion portion that is inserted through the endoscope. In an endoscopic device,
  A fixing member that is provided on an outer periphery of the sheath in the insertion direction on the distal side, and that fixes the distal side of the sheath to the inside of the subject;
A projecting member provided on the distal end surface of the sheath and projecting forward in the insertion direction;
  A plurality of cuts formed on the side surface on the distal side in the insertion direction of the sheath;
  A bending member that curves the distal end side in the insertion direction of the sheath in which the plurality of cuts are formed, and abuts the protruding member against the subject;
  Comprising
  The protruding member constitutes the fixing member that fixes the distal end side of the sheath to the subject,
  In a state where the distal end side of the sheath in the insertion direction is bent by the bending member, the insertion portion moves forward in the insertion direction from the cut located on the proximal end side in the insertion direction among the plurality of cuts. An endoscope apparatus characterized by being protruded.

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