JP2006212331A - Insertion assisting tool for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insertion assisting tool for an endoscope, which is capable of preventing body liquid or the like from leaking when the insertion part of the endoscope is pulled out from the insertion assisting tool by providing a closing means for closing the insertion hole of the insertion assisting tool. <P>SOLUTION: The insertion assisting tool 70 is provided with the insertion hole 70A into which the insertion part 12 of the endoscope 10 is to be inserted, and a lid member 84 and a torsion coil spring 86 are provided as the closing means for closing the insertion hole 70A. The lid member 84 is freely turnably supported and closes the insertion hole 70A by being turned. The lid member 84 is energized in a closing direction by the torsion coil spring 86. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insertion aid for an endoscope, and more particularly to an insertion aid for assisting insertion of an endoscope for observing a deep digestive tract such as a small intestine or a large intestine.

  When inserting the insertion part of the endoscope into the deep digestive tract such as the small intestine, simply pushing the insertion part makes it difficult for force to be transmitted to the distal end of the insertion part due to the complicated bending of the intestinal tract. Have difficulty. For example, if excessive bending or bending occurs in the insertion portion, the insertion portion cannot be inserted further deeper. Therefore, a method has been proposed in which an insertion aid is put on the insertion portion of the endoscope and inserted into the body cavity, and the insertion portion is guided by this insertion aid to prevent excessive bending or bending of the insertion portion. Yes.

For example, Patent Document 1 discloses an endoscope apparatus in which a first balloon is provided at a distal end portion of an insertion portion of an endoscope and a second balloon is provided at a distal end portion of an insertion assisting tool (also referred to as an overtube or a sliding tube). Is described. By inflating the first balloon and the second balloon, the insertion portion and the insertion aid can be fixed in the intestinal tract such as the small intestine. Accordingly, by alternately inserting the insertion portion and the insertion assisting tool while repeatedly expanding and contracting the first balloon and the second balloon, the insertion portion can be inserted into a deep portion of the intestinal tract that is bent in a complicated manner, such as the small intestine. .
JP 2002-301019 A

  However, the conventional balloon endoscope apparatus has a problem that when the insertion portion of the endoscope is pulled out from the insertion assisting tool, body fluid or the like leaks from the opening on the proximal end side of the insertion assisting tool, and the surroundings become dirty. there were.

  The present invention has been made in view of such circumstances, and provides an endoscope insertion aid that can prevent body fluid from leaking out when the insertion portion of the endoscope is pulled out of the insertion aid. It is characterized by.

  In order to achieve the object, the invention according to claim 1 has an insertion hole through which the insertion portion of the endoscope is inserted, and the insertion portion of the endoscope is inserted through the insertion hole, An insertion assisting tool for an endoscope for assisting insertion of an insertion part, characterized in that a balloon that can be inflated and contracted is attached to a distal end portion of the insertion assisting tool, and a closing means for closing the insertion hole is provided. To do.

  According to the first aspect of the present invention, when the insertion portion of the endoscope is pulled out from the insertion hole of the insertion assisting tool, body fluid or the like leaks from the insertion hole by closing the insertion hole with the closing means. Can be prevented. Further, the insertion assisting tool of claim 1 is fixed in a state of being inserted into the body cavity by inflating the balloon. Such an insertion assisting device has a problem that body fluid or the like is likely to leak by pulling out the insertion portion from the insertion hole in a state of being inserted into the body cavity. Leakage of body fluid etc. from the insertion hole can be prevented.

  The invention according to claim 2 is the invention according to claim 1, wherein the closing means is provided at a proximal end portion of the insertion assisting tool. By providing the closing means at the proximal end portion of the insertion assisting tool, it is possible to prevent the diameter of the portion to be inserted into the body cavity.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the closing means includes a lid member provided to be openable and closable with respect to the insertion hole, and a biasing force that biases the lid member in the closing direction. And means. Therefore, according to the third aspect of the present invention, when the insertion portion is pulled out from the insertion hole of the insertion assisting tool, the lid member is urged by the urging means, and the insertion hole is automatically closed.

  The invention according to claim 4 is the invention according to claim 1 or 2, wherein the closing means is an elastic piece for closing the insertion hole, and the elastic piece is elastically deformed so that the insertion portion can be inserted. It is characterized by having a hole to be formed at the center. Therefore, according to the fourth aspect of the present invention, when the insertion portion is pulled out from the insertion hole of the insertion assisting tool, the elastic piece returns to the original shape by its own elastic force and closes the insertion hole. Thereby, it is possible to prevent body fluid or the like from leaking from the insertion hole.

  According to a fifth aspect of the present invention, in the first or second aspect of the present invention, the closing means is an elastic piece that closes the insertion hole, and the elastic piece is split radially from a central portion. The insertion part can be inserted into the part. Therefore, according to the fifth aspect of the present invention, when the insertion portion is pulled out from the insertion hole of the insertion assisting tool, the elastic piece returns to its original shape by its own elastic force and closes the insertion hole. Thereby, it is possible to prevent body fluid or the like from leaking from the insertion hole.

  According to the endoscope insertion assisting tool according to the present invention, since the closing means for closing the insertion hole is provided, the insertion hole is closed when the insertion portion of the endoscope is pulled out from the insertion hole of the insertion assisting tool. The body fluid can be prevented from leaking from the insertion hole.

  Preferred embodiments of an endoscope insertion aid according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a system configuration diagram showing an embodiment of an endoscope apparatus to which an insertion assisting tool according to the present invention is applied. As shown in FIG. 1, the endoscope apparatus mainly includes an endoscope 10, an insertion assisting tool 70, and a balloon control device 100.

  The endoscope 10 includes a hand operation unit 14 and an insertion unit 12 connected to the hand operation unit 14 and inserted into a body cavity. A universal cable 16 is connected to the hand operation unit 14, and an LG connector 18 is provided at the tip of the universal cable 16. The LG connector 18 is detachably connected to the light source device 20, thereby sending illumination light to an illumination optical system 54 (see FIG. 2) described later. In addition, an electrical connector 24 is connected to the LG connector 18 via a cable 22, and the electrical connector 24 is detachably coupled to the processor 26.

  The hand operation unit 14 is provided with an air / water supply button 28, a suction button 30, a shutter button 32, and a function switching button 34, and a pair of angle knobs 36 and 36. A balloon air supply port 38 is formed at the proximal end portion of the hand operation unit 14 by a tube bent in an L shape. By supplying or sucking fluid such as air to the balloon air supply port 38, the first balloon 60 described later can be inflated or deflated.

  The insertion portion 12 is composed of a flexible portion 40, a bending portion 42, and a distal end portion 44 in order from the hand operation portion 14 side. The bending portion 42 is remotely controlled by rotating the angle knobs 36, 36 of the hand operation portion 14. Bending operation. Thereby, the front-end | tip part 44 can be turned to a desired direction.

  As shown in FIG. 2, an observation optical system 52, illumination optical systems 54 and 54, an air / water supply nozzle 56, and a forceps port 58 are provided on the distal end surface 45 of the distal end portion 44. A CCD (not shown) is disposed behind the observation optical system 52, and a signal cable (not shown) is connected to a substrate that supports the CCD. The signal cable is inserted into the insertion portion 12, the hand operating portion 14, the universal cable 16, and the like of FIG. 1, extends to the electrical connector 24, and is connected to the processor 26. Therefore, the observation image captured by the observation optical system 48 is formed on the light receiving surface of the CCD and converted into an electric signal, and this electric signal is output to the processor 26 via the signal cable and converted into a video signal. Is done. Thereby, an observation image is displayed on the monitor 50 connected to the processor 26.

  An exit end of a light guide (not shown) is disposed behind the illumination optical systems 54 and 54 in FIG. The light guide is inserted through the insertion portion 12, the hand operating portion 14, and the universal cable 16 of FIG. 1, and an 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 emitted from the light source device 20 is transmitted to the illumination optical systems 54 and 54 via the light guide, and irradiated forward from the illumination optical systems 54 and 54. Is done.

  The air / water supply nozzle 56 in FIG. 2 is connected to a valve (not shown) operated by the air / water supply button 28 in FIG. 1, and this valve is also connected to the air / water supply connector provided in the LG connector 18. 48 is communicated. An air / water supply means (not shown) is connected to the air / water supply connector 48 to supply air or water. Therefore, by operating the air / water supply button 28, air or water can be ejected from the air / water supply nozzle 56 toward the observation optical system 52.

  The forceps port 58 in FIG. 2 communicates with the forceps insertion portion 46 in FIG. Therefore, by inserting a treatment tool such as a forceps from the forceps insertion portion 46, the treatment tool can be led out from the forceps port 58. The forceps port 58 communicates with a valve (not shown) operated by the suction button 30, and this valve is further connected to the suction connector 49 of the LG connector 18. Therefore, by connecting a suction means (not shown) to the suction connector 49 and operating the valve with the suction button 30, a lesioned part or the like can be sucked from the forceps opening 58.

  A first balloon 60 made of an elastic material such as rubber is attached to the outer peripheral surface of the insertion portion 12. The first balloon 60 is formed in a substantially cylindrical shape with both ends narrowed. After the insertion portion 12 is inserted and the first balloon 60 is disposed at a desired position, the first balloon 60 is disposed as shown in FIG. The first balloon 60 is fixed to the insertion portion 12 by fitting rubber fixing rings 62 and 62 into both ends of the 60.

  A vent hole 64 is formed on the outer peripheral surface of the insertion portion 12 where the first balloon 60 is attached. The ventilation hole 64 communicates with a balloon air supply port 38 provided in the hand operation unit 14 of FIG. 1, and is connected to the balloon control device 100 via a tube 110 described later. Therefore, the first balloon 60 can be inflated and deflated by supplying and sucking air by the balloon control device 100. The first balloon 60 is inflated into a substantially spherical shape by supplying air, and sticks to the outer surface of the insertion portion 12 by sucking air.

  On the other hand, the insertion assisting tool 70 shown in FIG. 1 includes a cylindrical gripping portion 72 provided on the proximal end side, and a main body tube 73 attached to the distal end of the gripping portion 72. The insertion assisting tool 70 is entirely formed in a substantially cylindrical shape, and an insertion hole 70A (that is, the inside of the gripping portion 72 and the inside of the main body tube 73) passes through the insertion portion 12 of the endoscope 10. It is formed in a size that can be inserted.

  The main body tube 73 is formed in a flexible cylindrical shape, and a hydrophilic lubricating coating is applied to the inner peripheral surface thereof. A second balloon 80 is attached near the tip of the main body tube 73. The second balloon 80 is formed in a substantially cylindrical shape with both ends narrowed, and is attached in a state where the insertion assisting tool 70 is penetrated, and is fixed by winding a thread (not shown). A tube 74 attached to the outer peripheral surface of the insertion assisting tool 70 is communicated with the second balloon 80, and a connector 76 is provided at the proximal end portion of the tube 74. A tube 120 is connected to the connector 76, and is connected to the balloon control device 100 via the tube 120. Therefore, the second balloon 80 can be inflated and deflated by supplying and sucking air with the balloon control device 100. The second balloon 80 is expanded into a substantially spherical shape by supplying air, and is attached to the outer peripheral surface of the insertion assisting tool 70 by sucking air.

  An injection port 78 is provided on the proximal end side of the insertion assisting tool 70. The injection port 78 communicates with an opening (not shown) formed on the inner peripheral surface of the insertion assisting tool 70. Therefore, the lubricant can be supplied into the insertion aid 70 by injecting the lubricant (for example, water) from the injection port 78 with a syringe or the like. Therefore, when the insertion portion 12 is inserted into the insertion assisting tool 70, the friction between the inner peripheral surface of the insertion assisting tool 70 and the outer peripheral surface of the insertion portion 12 can be reduced, and the relative relationship between the insertion portion 12 and the insertion assisting tool 70 can be reduced. Movement can be performed smoothly.

  As shown in FIGS. 3A and 3B, the gripping portion 72 is made of a hard member such as resin, and has a small diameter portion 72A on the distal end side formed in a cylindrical shape, and a proximal end of the small diameter portion 72A. And a large-diameter portion 72B formed in a cylindrical shape with a diameter larger than that of the small-diameter portion 72A. The small diameter portion 72A has an inner diameter slightly larger than the outer diameter of the insertion portion 12, and the main body tube 73 is fitted and fixed to the outside of the small diameter portion 72A. Between the small diameter part 72A and the large diameter part 72B, there is provided a tapered part 72C whose diameter gradually decreases from the large diameter part 72B side to the small diameter part 72A side, and the insertion part 12 inserted from the large diameter part 72B is provided. The tapered portion 72C can smoothly guide the small diameter portion 72A.

  At the base end of the large-diameter portion 72B, a ridge 72D protruding from the inner peripheral surface is formed over the entire circumference. Further, a lid member 84 and a torsion coil spring 86 are provided inside the large diameter portion 72B as a closing means for the insertion hole 70A. The lid member 84 is formed in a substantially disk shape and is supported so as to be rotatable about a shaft 88. 70 A of insertion holes are obstruct | occluded by rotating this cover member 84 to the arrow A direction, and making the outer peripheral part of the cover member 84 contact | abut to the convex part 72D. Further, by rotating the lid member 84 in the direction of arrow B, the insertion hole 70A is opened and communicated with the outside.

  The torsion coil spring 86 biases the lid member 84 in the direction of arrow A (that is, the direction in which the lid member 84 is closed). Therefore, as shown in FIG. 3A, in a natural state without a load (that is, a state where the insertion portion 12 is not inserted), the insertion hole 70A is closed by the lid member 84 biased by the torsion coil spring 86. The Further, as shown in FIG. 3B, when the insertion assisting tool 12 is pushed in from the proximal end side of the insertion assisting tool 70, the lid member 84 rotates against the urging force of the torsion coil spring 86, and the insertion portion 12 can be inserted through the insertion hole 70A.

  The balloon control device 100 of FIG. 1 is a device that supplies and sucks fluid such as air to the first balloon 60 and supplies and sucks fluid such as air to the second balloon 80. The balloon control device 100 mainly includes a device main body 102 and a hand switch 104 for remote control.

  On the front surface of the apparatus main body 102, a power switch SW1, a stop switch SW2, a first pressure display unit 106, a second pressure display unit 108, a first function stop switch SW3, and a second function stop switch SW4 are provided. The first pressure display unit 106 and the second pressure display unit 108 are panels for displaying the pressure values of the first balloon 60 and the second balloon 80, respectively. When an abnormality such as balloon breakage occurs, the pressure display units 106 and 108 are displayed. An error code is displayed.

  The first function stop switch SW3 and the second function stop switch SW4 are switches for turning on / off the functions of an endoscope control system A and an insertion assisting tool control system B, which will be described later. When only one of the two balloons 80 is used, the function stop switches SW3 and SW4 which are not used are operated to turn off the function. In the control system A or B in which the function is turned off, air supply and suction are completely stopped, and the pressure display unit 106 or 108 of the system is also turned off. The function stop switches SW3 and SW4 can be set to an initial state by turning off both of them. For example, the calibration with respect to the atmospheric pressure is performed by turning off both function stop switches SW3 and SW4 and simultaneously pressing all the switches SW5 to SW9 of the hand switch 104.

  A tube 110 that supplies and sucks air to the first balloon 60 and a tube 120 that supplies and sucks air to the second balloon 80 are connected to the front surface of the apparatus main body 102. The connection portions between the tubes 110 and 120 and the apparatus main body 102 are provided with backflow prevention units 112 and 122 for preventing backflow of body fluid when the first balloon 60 or the second balloon 80 is torn. The backflow prevention units 112 and 122 are configured by incorporating a gas-liquid separation filter in a hollow disk-like case (not shown) that is detachably attached to the apparatus main body 102. The filter prevents the liquid from flowing in.

  In addition, the pressure display units 106 and 108, the function stop switches SW3 and SW4, and the backflow prevention units 112 and 122 are always arranged in a constant manner for the endoscope 10 and the insertion assisting tool 70. That is, the pressure display unit 106 for the endoscope 10, the function stop switch SW3, and the backflow prevention unit 112 are respectively connected to the pressure display unit 108, the function stop switch SW4, and the backflow prevention unit 122 for the insertion assisting tool 70. Are arranged on the right side.

  On the other hand, the hand switch 104 includes a stop switch SW5 similar to the stop switch SW2 on the apparatus main body 102 side, an ON / OFF switch SW6 for instructing pressurization / decompression of the first balloon 60, and the pressure of the first balloon 60. A pause switch SW7 for holding, an ON / OFF switch SW8 for instructing pressurization / depressurization of the second balloon 80, and a pause switch SW9 for holding the pressure of the second balloon 80 are provided. The hand switch 104 is electrically connected to the apparatus main body 102 via the cord 130. Although not shown in FIG. 1, the hand switch 104 is provided with a display unit that indicates an air supply state or an exhaust state of the first balloon 60 or the second balloon 80.

  The balloon control device 100 configured as described above supplies air to the balloons 60 and 80 to inflate them and controls the air pressure to a constant value to hold the balloons 60 and 80 in an inflated state. In addition, air is sucked from each balloon 60 and 80 and contracted, and the air pressure is controlled to a constant value to hold each balloon 60 and 80 in a contracted state.

  The balloon control device 100 is connected to the balloon dedicated monitor 82 and displays the pressure value and the inflated / deflated state of the balloons 60 and 80 on the balloon dedicated monitor 82 when the balloons 60 and 80 are inflated and deflated. . The pressure values and the inflated / deflated states of the balloons 60 and 80 may be superimposed on the observation image of the endoscope 10 and displayed on the monitor 50.

  Next, an operation method of the endoscope apparatus configured as described above will be described with reference to FIGS. 4 (a) to 4 (h).

  First, as shown in FIG. 4A, the insertion part 12 is inserted into the intestinal tract (for example, the descending leg of the duodenum) 90 with the insertion assisting tool 70 placed on the insertion part 12. At this time, the first balloon 60 and the second balloon 80 are deflated.

  Next, as shown in FIG. 4B, the second balloon 80 is inflated by supplying air to the second balloon 80 in a state where the distal end of the insertion assisting tool 70 is inserted up to the bent portion of the intestinal tract 90. That is, the switch SW8 of the hand switch 104 is turned on to instruct pressurization, air is supplied from the balloon control device 100 through the tube 120, and the second balloon 80 is inflated until a preset pressure is applied. As a result, the second balloon 80 is locked to the intestinal tract 90, and the distal end of the insertion assisting tool 70 is fixed to the intestinal tract 90.

  Next, as shown in FIG. 4C, only the insertion portion 12 of the endoscope 10 is inserted into the deep portion of the intestinal tract 90. Then, as shown in FIG. 4 (d), air is supplied to the first balloon 60 to be inflated. That is, the switch SW6 of the hand switch 104 is turned on to instruct pressurization, air is supplied from the balloon control device 100 via the tube 110, and the first balloon 60 is inflated until a preset pressure is applied. Thereby, the first balloon 60 is fixed to the intestinal tract 90.

  Next, air is sucked from the second balloon 80 to contract the second balloon 80. That is, the switch SW8 of the hand switch 104 is turned OFF to command a pressure reduction, air is sucked from the balloon control device 100 through the tube 120, and the second balloon 80 is contracted until a preset pressure reducing force is obtained. Thereafter, as shown in FIG. 4E, the insertion assisting tool 70 is pushed in and inserted along the insertion portion 12. And after holding the front-end | tip of the insertion auxiliary tool 70 to the vicinity of the 1st balloon 60, as shown in FIG.4 (f), air is supplied to the 2nd balloon 80, and it is made to expand. That is, by turning ON the switch SW8 of the hand switch 104, the second balloon 80 is inflated until a preset pressure is applied. Thereby, the second balloon 80 is fixed to the intestinal tract 90. That is, the intestinal tract 90 is grasped by the second balloon 80.

  Next, as shown in FIG. 4 (g), the insertion assisting tool 70 is pulled forward. Thereby, the intestinal tract 90 is in a contracted state, and the extra bending or bending of the insertion assisting tool 70 is eliminated. Next, as shown in FIG. 4 (h), air is sucked from the first balloon 60 to contract the first tube 60. That is, the switch SW6 of the hand switch 104 is turned OFF to instruct decompression, air is sucked from the balloon control device 100 through the tube 110, and the first balloon 60 is contracted until the preset decompression force is reached.

  And the front-end | tip part 44 of the insertion part 12 is inserted in the deep part of the intestinal tract 90 as much as possible. That is, the insertion operation shown in FIG. Thereby, the front-end | tip part 44 of the insertion part 12 can be inserted in the deep part of the intestinal tract 90. FIG. When inserting the insertion portion 12 into a deeper portion, after performing a fixing operation as shown in FIG. 4D, a pushing operation as shown in FIG. ), A hand-drawing operation as shown in FIG. 4G, and an insertion operation as shown in FIG. Thereby, the insertion part 12 can be further inserted into the deep part of the intestinal tract 90.

  Next, the operation of the endoscope apparatus configured as described above will be described.

  When performing the above-described operation, the insertion portion 12 of the endoscope 10 is inserted into the insertion hole 70A of the insertion assisting tool 70 as shown in FIG. At this time, since the lid member 84 is pressed by the insertion portion 12, the lid member 84 is rotated against the urging force of the torsion coil spring 86.

  By the way, as an operation other than the above-described operation, the insertion assisting tool 70 may be left in the body cavity and the insertion portion 12 of the endoscope 10 may be pulled out of the insertion assisting tool 70 while maintaining the state where the intestine is pulled forward. . For example, in the case of an abnormality when the balloon 60 is torn or detached, or when all the treatments are completed, the insertion portion 12 is pulled out from the insertion aid 70 while the insertion aid 70 remains in the body cavity.

  At this time, when the insertion portion 12 is pulled out from the insertion hole 70A of the insertion assisting tool 70, the lid member 84 is rotated by the urging force of the torsion coil spring 86 as shown in FIG. Abut. Thereby, since the insertion hole 70A of the insertion assisting tool 70 is closed, it is possible to prevent body fluid and the like from leaking from the insertion hole 70A.

  As described above, according to the present embodiment, the lid member 84 is provided in the insertion assisting tool 70, and the insertion hole 70A of the insertion assisting tool 70 is closed by the lid member 84. Therefore, the insertion portion 12 is inserted into the insertion hole 70A. It is possible to prevent body fluid and the like from leaking out from the insertion hole 70A when pulled out from the insertion hole. In particular, in the present embodiment, the lid member 84 is urged in the closing direction by the torsion coil spring 86, so that the insertion hole 70A can be naturally closed when the insertion portion 12 is pulled out from the insertion hole 70A.

  Further, according to the present embodiment, since the closing means including the lid member 84 and the torsion coil spring 86 is provided in the gripping portion 72 on the proximal end side, the portion to be inserted into the body cavity (that is, the main body tube 73) is provided. The blocking means can be provided without increasing the diameter.

  Furthermore, according to the present embodiment, when the insertion portion 12 is inserted through the insertion hole 70 </ b> A of the insertion assisting tool 70, the insertion portion 12 is pressed by the lid member 84 urged by the torsion coil spring 86. Therefore, the insertion portion 12 can be held by the insertion assisting tool 70.

  The configuration of the closing means for closing the insertion hole 70A of the insertion assisting tool 70 is not limited to the above-described embodiment. 5 (A), 5 (B), and 6 are cross-sectional views showing a base end portion of an insertion assisting tool 70 provided with a rubber member (corresponding to an elastic piece) 92 as another configuration of the closing means. 6 is a perspective view of the rubber member 92. As shown in these drawings, the closing means is constituted by a substantially disk-shaped rubber member 92, and the rubber member 92A is attached so as to close the insertion hole 70A inside the grip portion 72. A ring portion 92 </ b> A is integrally formed with the rubber member 92 at the center position of the rubber member 92. The ring portion 92A has a shape that closes the central hole in the natural state as shown in FIG. 5A and FIG. 6, and the center of the ring portion 92A is shown in FIG. 5B. By pushing the insertion portion 12 into the hole, the ring member 92A is elastically deformed so as to spread. Thereby, the insertion part 12 can be inserted into the hole of the ring part 92 </ b> A, and the insertion part 12 can be inserted into the insertion hole 70 </ b> A of the insertion assisting tool 70. When the inserted insertion portion 12 is pulled out from the insertion hole 70A, the rubber member 92 returns to its original shape by its own elastic force and closes the hole of the ring portion 92A. As a result, the insertion hole 70A is closed, so that body fluid and the like can be prevented from leaking from the insertion hole 70A. Further, the closing means comprising the rubber member 92 described above is inserted into the outer peripheral surface of the insertion portion 12 when the insertion portion 12 is inserted into the insertion hole 70A of the insertion assisting tool 70, as shown in FIG. A gap with the inner peripheral surface of the auxiliary tool 70 can be closed by the rubber member 92. Therefore, leakage of body fluid or the like can be prevented even when the insertion portion 12 is pushed and pulled while being inserted through the insertion aid 70.

  Instead of the rubber member 92 shown in FIG. 6, a rubber member (corresponding to an elastic piece) 94 shown in FIG. The rubber member 94 shown in FIG. 7 is formed in a disc shape, and is attached so as to close the insertion hole 70A of the insertion assisting tool 70. The rubber member 94 is formed with a plurality of cuts (splits) 94B, 94B... Radially from the center position 94A. Therefore, by pushing the insertion portion 12 into the center position 94A of the rubber member 94, the rubber member 94 is elastically deformed so as to be turned up from the center position 94A, and the insertion portion 12 can be inserted. Even when such a rubber member 94 is used, when the insertion portion 12 is pulled out from the insertion hole 70A, the rubber member 94 elastically returns to its original shape and closes the insertion hole 70A. Etc. can be prevented from leaking out.

  In the above-described embodiment, the closing means is provided at the proximal end portion of the insertion assisting tool 70. However, the attachment position of the closing means is not limited to this, and the insertion hole 70A of the insertion assisting tool 70 is closed. Any position is acceptable. Therefore, the closing means may be provided at the distal end portion of the main body tube 73 of the insertion assisting tool 70, or the closing means may be provided at the intermediate portion of the main body tube 73.

System configuration diagram of an endoscope apparatus to which an insertion assisting tool according to the present invention is applied The perspective view which shows the front-end | tip part of the insertion part of an endoscope Sectional view showing the configuration of the closing means Explanatory drawing which shows the operating method of the endoscope apparatus which concerns on this invention Sectional drawing which shows the obstruction | occlusion means of a structure different from FIG. The perspective view which shows the rubber member of FIG. The perspective view which shows the rubber member different from FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Endoscope, 12 ... Insertion part, 14 ... Hand operation part, 20 ... Light source device, 26 ... Processor, 50 ... Monitor, 60 ... First balloon, 70 ... Insertion aid, 80 ... Second balloon, 84 ... Lid member, 86 ... Torsion coil spring, 92 ... Rubber member, 94 ... Rubber member, 100 ... Balloon control device, 102 ... Device body, 104 ... Hand switch

Claims (5)

In an insertion aid for an endoscope that has an insertion hole through which an insertion portion of an endoscope is inserted, and that inserts the insertion portion of the endoscope into the insertion hole to assist insertion of the insertion portion.
A balloon that can be expanded and contracted is attached to the distal end portion of the insertion assisting tool,
An insertion assisting tool for an endoscope, comprising a closing means for closing the insertion hole.   The endoscope insertion aid according to claim 1, wherein the closing means is provided at a proximal end portion of the insertion aid. The closing means is
A lid member provided to be openable and closable with respect to the insertion hole;
Biasing means for biasing the lid member in the closing direction;
The insertion assisting tool for an endoscope according to claim 1 or 2, further comprising:   The said closing means is an elastic piece that closes the insertion hole, and the elastic piece has a hole in the center part through which the insertion part can be inserted by elastic deformation. The endoscope insertion aid described in 1.   The closing means is an elastic piece for closing the insertion hole, and the elastic piece is formed with a split radially from a central portion, and the insertion portion can be inserted into the central portion. The endoscope insertion aid according to 1 or 2.

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