JP3874292B2 - Endoscope device - Google Patents

Description

  The present invention relates to an endoscope apparatus, and more particularly to an endoscope apparatus in which a balloon is attached to an insertion portion of an endoscope.

  In recent years, endoscope apparatuses using a balloon have been developed (see Patent Document 1). The balloon is attached to the outer peripheral surface of the distal end of the insertion portion of the endoscope and the outer peripheral surface of the insertion assisting tool, and is inflated and contracted by supplying and sucking air. By inflating the balloon in the body cavity, the insertion portion and the insertion assisting tool are fixed in the body cavity, and a stable observation image can be obtained.

In the endoscope apparatus of Patent Document 1, a balloon is connected to a dedicated fluid control device (controller), and fluid is supplied to and sucked into the balloon using the fluid control device. The fluid control device monitors the internal pressure of the balloon, and detects a fluid leak when the balloon is excessively inflated to place a burden on the body cavity or when the balloon is torn.
JP 2003-144378 A

  By the way, the endoscope is used by being connected to a light source device and a processor in addition to the fluid control device described above. Therefore, the conventional endoscope has a problem that a large space is required around the examination table because a plurality of connection devices are installed. In addition, when the number of connected devices increases, the number of cords connecting the connected devices and the endoscope increases, and there is a problem that the operability of the endoscope deteriorates due to the tangling of the cords. From such a background, it is desired to simplify the configuration of the entire endoscope apparatus including connection devices such as a fluid control device and a light source device, and to reduce the size of the entire apparatus.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide an endoscope apparatus that can simplify the configuration of the entire apparatus and can be miniaturized.

In order to achieve the object, the invention according to claim 1 includes an endoscope, a fluid supply device, and a suction device, and a distal end portion of an insertion portion of the endoscope communicates with the fluid supply device. An endoscope device in which a fluid ejection nozzle and a suction port communicating with the suction device are formed, and an inflatable balloon is mounted on an outer peripheral surface of the insertion portion. The balloon includes the fluid ejection nozzle The fluid supply device communicates with the fluid supply device via a supply valve that operates the supply of fluid to the fluid, and the fluid from the fluid supply device is supplied to the balloon by operating the supply valve. The suction device communicates with the suction device via a suction valve that controls the suction of the fluid from the suction port. By operating the suction valve, the fluid in the balloon is sucked into the suction device, and the bar Supply conduit communicating over ting the fluid supply device, and the suction conduit communicating said suction device and the balloon is characterized in that the balloon controller for controlling the pressure of the balloon is provided.

According to the first aspect of the present invention, the fluid is supplied to and sucked from the balloon using the fluid supply device that supplies the fluid to the fluid ejection nozzle and the suction device that performs suction from the suction port. This eliminates the need for a fluid supply device or suction device dedicated to the balloon. Therefore, the entire endoscope apparatus can be reduced in size. According to the first aspect of the present invention, the supply of fluid to the balloon can be performed using a supply valve for operating the supply of fluid to the fluid ejection nozzle and a suction valve for operating the suction from the suction port. Manipulate suction. This eliminates the need for a balloon-dedicated valve and simplifies the overall configuration of the apparatus.

According to a second aspect of the present invention, in the first aspect of the present invention, the supply pipe line and the suction pipe line have two branch pipes in which a valve for switching between communication and blocking is provided, and the two branch lines The balloon controller is provided on one side of a conduit, and a sensor that detects an operation state in which fluid is supplied to the balloon and an operation state in which fluid is sucked from the balloon to the supply valve and the suction valve. Provided, and when the detection by the sensor is made, the valve is switched, and the fluid flows into a branch pipe line in which the balloon controller is disposed.

  According to the endoscope apparatus according to the present invention, the fluid is supplied to and sucked from the balloon using the fluid supply device that supplies the fluid to the fluid ejection nozzle and the suction device that performs suction from the suction port. This eliminates the need for a dedicated fluid supply device and suction device for the balloon. Therefore, the entire endoscope apparatus can be reduced in size.

  Hereinafter, preferred embodiments of an endoscope apparatus according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a system configuration diagram of an endoscope apparatus to which a balloon control device according to the present invention is applied. As shown in FIG. 1, the endoscope apparatus mainly includes an endoscope 10, a light source device 20, and a processor 30.

  The endoscope 10 includes an insertion portion 12 that is inserted into a body cavity, and a hand operation portion 14 that is connected to the insertion portion 12. The hand operation unit 14 is provided with an air / water supply button 32, a suction button 34, and a shutter button 36, and a pair of angle knobs 38 and 38 and a forceps insertion unit 40. 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. By connecting the LG connector 18 to the light source device 20 in a detachable manner, illumination light can be transmitted to the illumination optical system 54 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 30. The LG connector 18 is connected to an air / water supply tube 26, and the air / water supply tube 26 is connected to a water storage tank 27 described later. The LG connector 18 is connected to a suction tube 28, and the suction tube 28 is connected to the light source device 20.

  The insertion portion 12 includes a distal end portion 46, a bending portion 48, and a flexible portion 50. The bending portion 48 is remotely operated by rotating a pair of angle knobs 38, 38 provided on the hand operating portion 14. Curved operation. Thereby, the front end surface 47 of the front end portion 46 can be directed in 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 (corresponding to a suction port) 58 are provided on the distal end surface 47 of the distal end portion 46. A CCD (not shown) is disposed behind the observation optical system 52, and a signal cable is connected to a substrate that supports the CCD. The signal cable is inserted into the insertion portion 12, the hand operating portion 14, and the universal cable 16 of FIG. 1, extends to the electrical connector 24, and is connected to the processor 30. Therefore, the observation image captured by the observation optical system 52 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 30 via the signal cable and converted into a video signal. Is done. As a result, the observation image is displayed on the monitor 60 connected to the processor 30.

  An exit end of a light guide (not shown) is disposed behind the illumination optical systems 54 and 54 in FIG. This light guide is inserted through the insertion portion 12, the hand operating portion 14, and the universal cable 16 of FIG. 1, and the incident end side is disposed on a light guide rod (see FIG. 3) 19 of the LG connector 18. Therefore, by connecting the light guide rod 19 of 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, 54 via the light guide, and the illumination optical system 54, 54.

  FIG. 3 is a conduit configuration diagram showing a fluid conduit in the endoscope apparatus.

  As shown in FIG. 3, an air / water supply tube 80 is connected to the air / water supply nozzle 56. The air / water supply tube 80 is branched into an air supply tube 82 and a water supply tube 84, and each is connected to an air / water supply valve (corresponding to a supply valve) 86 described later. An air supply tube 88 and a water supply tube 90 are connected to the air supply / water supply valve 86, and the air supply tube 88 and the water supply tube 90 are inserted into the universal cable 16 and extended to the water supply connector 92 of the LG connector 18. Is done. The tube 26 is detachably connected to the water supply connector 92, and the tip of the tube 26 is connected to the water storage tank 27. By connecting the tube 26 to the water storage tank 27, the water supply tube 90 is communicated below the liquid level of the water storage tank 27, and the air supply tube 88 is communicated above the liquid level.

  An air tube 94 is connected to the water supply connector 92, and the air tube 94 communicates with an air supply tube 88. Further, the air tube 94 is connected to a conduit 120 in the light source device 20 described later by connecting the LG connector 18 to the light source device 20, and is connected to the air pump 21 via the conduit 120. Therefore, when the air pump 21 is driven to supply air, the air is supplied to the air supply tube 88 via the air tube 94. If the tip of the air supply tube 88 is blocked by the air / water supply valve 86, the air supplied to the air tube 94 is supplied onto the liquid level of the water storage tank 27. As a result, the internal pressure of the water storage tank 27 increases and water is fed to the water supply tube 90.

  On the other hand, a forceps tube 96 is connected to the forceps port 58. The forceps tube 96 is branched and communicated with the forceps insertion portion 40 and the suction valve 98. Therefore, the treatment instrument can be led out from the forceps opening 58 by inserting a treatment instrument such as a forceps from the forceps insertion portion 40.

  A suction button 34 is attached to the suction valve 98, and the suction tube 100 is connected in a branched state. The suction tube 100 is inserted through the universal cable 16 and extends to the suction connector 102 of the LG connector 18. A tube 28 is connected to the suction connector 102, and the tube 28 is connected to a conduit 130 in the light source device 20 described later. The conduit 130 communicates with a connection port 23 formed in the light source device 20, and a suction device 29 is connected to the connection port 23. Therefore, when the suction device 29 is driven, the air in the suction tube 100 is sucked. Therefore, when the suction valve 98 is operated with the suction button 34 to connect the suction tube 100 and the forceps tube 96, the suction operation from the forceps port 58 can be performed.

  As shown in FIG. 2, a balloon 42 made of an elastic body such as rubber is attached to the outer peripheral surface near the distal end of the insertion portion 12. The balloon 42 is formed in a substantially cylindrical shape with both ends narrowed, and is mounted by fixing the both ends of the balloon 42 to the insertion portion 12 after the insertion portion 12 is inserted and disposed at a desired position. The The balloon 42 is configured to be freely expandable and contractible, and is inflated into a substantially spherical shape or contracted so as to stick to the outer peripheral surface of the insertion portion 12.

  A vent hole 62 is formed on the outer peripheral surface of the insertion portion 12 where the balloon 42 is attached. As shown in FIG. 3, a balloon tube 104 is connected to the vent hole 62, and the balloon tube 104 is branched in the hand operation unit 14 and connected to an air / water supply valve 86 and a suction valve 98.

  FIG. 4 is a cross-sectional view showing the configuration of the air / water supply valve 86.

  As shown in the figure, the air / water supply valve 86 includes a cylinder 140 and a piston 142, and the cylinder 140 is fixed to the case 15 of the hand operation unit 14. Two branch pipes (hereinafter referred to as air supply tubes 88a and 88b) of the air supply tube 82, the water supply tube 84, the balloon tube 104, the water supply tube 90, and the air supply tube 88 are connected to the cylinder 140. Is done. A button receiver 144 is fixed to the head of the cylinder 140. Inside the button receiver 144 is provided a disk 146 that comes into contact when the air / water supply button 32 is pressed, and the disk 146 is biased upward by a spring 148.

  On the other hand, the piston 142 is supported by the cylinder 140 so as to be able to appear and retract. On the outer peripheral surface of the piston 142, two grooves 150 and 152 are formed in the circumferential direction over the entire circumference. The piston 142 is formed with a vent hole 154 along the central axis. An air / water feed button 32 is attached to the head of the piston 142, and the air / water feed button 32 is formed with a leak hole 156 communicating with the vent hole. The piston 142 is urged in the protruding direction by a spring 158 interposed between the air / water supply button 32 and the button receiver 144. Therefore, when the air / water supply button 32 is pressed, the spring 158 is first compressed as shown in FIG. Hereinafter, this pressing operation is referred to as a first stage pressing operation. When the air / water feed button 32 is further pressed, the air / water feed button 32 compresses the spring 148 via the disk 146 as shown in FIG. Hereinafter, this pressing operation is referred to as a second stage pressing operation. In the first-stage pressing operation and the second-stage pressing operation, the resistance increases by the amount corresponding to the spring 148, so that the operational feeling changes. Therefore, it is possible to distinguish between the first step pressing operation and the second step pressing operation.

  The state shown in FIG. 4 is a state where the air / water supply button 32 is not pressed (that is, no operation state), and the air supply tube 82 and the air supply tube 88a are communicated with each other. The tube 88a communicates with the outside air through the vent hole 154 and the leak hole 156. Therefore, in the non-operation state, the air supplied to the air supply tube 88 a flows to the outside through the vent hole 154 and the leak hole 156 and is not supplied to the water supply tube 82. In this state, the water supply tube 84, the water supply tube 90, the balloon tube 104, and the air supply tube 88b are blocked. Therefore, in the non-operation state, air supply to the balloon tube 104 and water supply to the water supply tube 84 are not performed.

  As shown by a two-dot chain line in FIG. 4, when the leak hole 156 is closed with the finger 160 without pressing the air / water supply button 32 (hereinafter referred to as a closing operation state), the leak hole 156 is closed. The air tube 88 a communicates only with the air supply tube 82. Therefore, the air supplied to the air supply tube 88 a flows into the air supply tube 82, and the air is injected from the air supply / water supply nozzle 56.

  In the first stage pressing operation state shown in FIG. 5, the water supply tube 90 and the water supply tube 84 are communicated with each other via the groove 150 of the piston 142. In this state, the balloon tube 104, the air supply tube 82, and the air supply tubes 88a and 88b are blocked. Accordingly, since the air supply tubes 88a and 88b are blocked from other pipes, the air supplied from the air pump 21 in FIG. 3 is supplied onto the liquid surface of the water storage tank 27. Thereby, the internal pressure of the water storage tank 27 rises, and the water in the water storage tank 27 is fed to the water supply tube 90. Therefore, the water flowing through the water supply tube 90 flows into the water supply tube 84 via the groove 150 of the piston 142 and is injected from the air / water supply nozzle 58.

  In the second-stage pressing operation state shown in FIG. 6, the balloon tube 104 and the air supply tube 88 b are communicated with each other via the groove 152 of the piston 142. In this state, the water supply tube 90, the water supply tube 84, the air supply tube 82, and the air supply tube 88a are blocked. Therefore, the air flowing through the air supply tube 88 b flows into the balloon tube 104 via the groove 152 and is supplied to the balloon 42. Thereby, the balloon 42 can be inflated.

  As described above, the air / water supply valve 86 of the present embodiment has a two-stage push-down operation structure, and air is injected from the air / water supply nozzle 56 by performing the closing operation of the leak hole 156, and the air / water supply / Water is ejected from the air / water supply nozzle 56 by pressing the water supply button 32 in the first stage, and air is supplied to the balloon 42 by operating the air / water supply button 32 in the second stage. Therefore, the air supply operation from the air supply / water supply nozzle 56, the water supply operation, and the inflation operation of the balloon 42 can be switched only by operating the air supply / water supply button 32.

  4 to 6, reference numeral 162 denotes an O-ring that closes a gap between the inner peripheral surface of the cylinder 140 and the outer peripheral surface of the piston 142.

  Reference numeral 164 denotes a detection sensor fixed to the cylinder 140, and the detection object 166 attached to the piston 142 is detected by the detection sensor 164. The detection sensor 164 detects the inspected object 166 when the second stage pressing operation state is entered as shown in FIG. Thereby, it can be detected that the air / water supply valve 86 is in the second-stage pressing operation state.

  FIG. 7 is a cross-sectional view showing the configuration of the suction valve 98.

  As shown in the figure, the suction valve 98 includes a cylinder 170 and a piston 172, and the cylinder 172 is fixed to the case 15 of the hand operation unit 14. The cylinder 170 is connected to the two branch pipes (hereinafter referred to as suction tubes 100a and 100b) of the forceps tube 96, the balloon tube 104, and the suction tube 100 described above. A button receiver 174 is fixed to the head of the cylinder 170. Inside the button receiver 174 is provided a disk 176 that comes into contact when the suction button 34 is pressed, and the disk 176 is biased upward by a spring 178.

  On the other hand, the piston 172 is supported by the cylinder 170 so as to be able to appear and retract. On the outer peripheral surface of the piston 172, two grooves 180 and 182 are formed in the circumferential direction over the entire circumference. A suction button 34 is attached to the head of the piston 172. The piston 172 is urged in the protruding direction by a spring 188 interposed between the suction button 34 and the button receiver 174. Therefore, when the suction button 34 is pressed, the spring 188 is first compressed as shown in FIG. Hereinafter, this pressing operation is referred to as a first stage pressing operation. When the suction button 34 is further pressed, the suction button 34 compresses the spring 178 via the disk 176 as shown in FIG. 9 and the piston 172 is immersed in the cylinder 170. Hereinafter, this pressing operation is referred to as a second stage pressing operation. In the first-stage pressing operation and the second-stage pressing operation, the resistance increases by the amount corresponding to the spring 178, so that the operational feeling changes. Therefore, it is possible to distinguish between the first step pressing operation and the second step pressing operation.

  The state shown in FIG. 7 is a state in which the suction button 34 is not pressed (that is, no operation state), and the forceps tube 96, the balloon tube 104, and the suction tubes 100a and 100b are all blocked. Therefore, the suction operation is not performed on both the forceps port 58 and the balloon 42.

  In the first-stage pressing operation state shown in FIG. 8, the forceps tube 96 and the suction tube 100 a are communicated via the groove 180 of the piston 172. In this state, the balloon tube 104 and the suction tube 100b are blocked. Accordingly, since the negative pressure suction force of the suction tube 100a is transmitted to the forceps tube 96, suction from the forceps port 58 can be performed.

  In the second stage operation state shown in FIG. 9, the balloon tube 104 and the suction tube 100 b are communicated with each other through the groove 182 of the piston 172. In this state, the forceps tube 96 and the suction tube 100a are blocked. Therefore, since the negative pressure suction force of the suction tube 100b is transmitted to the balloon tube 104, the air in the balloon 42 (see FIG. 3) is sucked through the balloon tube 104.

  As described above, the suction valve 98 of the present embodiment has a two-stage pressing operation structure, and suction from the forceps port 58 is performed by pressing the suction button 34 in the first stage, and the suction button 34 is moved to the second stage. Air is sucked from the balloon 42 by the step pressing operation. Therefore, the suction operation from the forceps port 58 and the contraction operation of the balloon 42 can be switched only by operating the suction button 34.

  7 to 9, reference numeral 190 denotes a detection sensor fixed to the cylinder 170, and the detection objects 190, 194, and 196 attached to the piston 172 are detected by the detection sensor 190. For example, the inspection object 192 is detected in the no-operation state shown in FIG. 7, the inspection object 194 is detected in the first-stage pressing operation state shown in FIG. 8, and the inspection object 194 is detected in the second-stage pressing operation state shown in FIG. A body 196 is detected. Therefore, by detecting the inspected objects 192, 194, and 196 with the detection sensor 190, it is possible to detect the operation state of the suction valve 98 (no operation state, first step pressing operation state, second step pressing operation state). it can.

  Switching control between the conduit 130 and the conduit 120 in the light source device 20 is performed according to the detection result of the detection sensor 190 and the detection result of the detection sensor 164 described above.

  As shown in FIG. 3, the duct 120 in the light source device 20 communicates the air pump 21 and the tube 94. This pipeline 120 is branched into two on the way, and branched pipelines 120a and 120b are formed. Electromagnetic valves 122a and 122b are disposed in the branch pipes 120a and 120b, and communication and blocking are switched by the electromagnetic valves 122a and 122b. A balloon controller 126 is disposed in the branch pipe line 120b. The balloon controller 126 monitors and controls the pressure of the air flowing through the branch pipe line 120b, detects a change in pressure, and the behavior thereof. The air supply is controlled according to the above. For example, when the pressure suddenly drops or drops intermittently, it is determined that the balloon 42 has been broken, and the supply of fluid is stopped.

  The two electromagnetic valves 122a and 122b are controlled in accordance with the detection sensor 164 of the air / water supply valve 86 described above. For example, when the second-stage pressing operation state is detected by the detection sensor 164, the electromagnetic valve 122b is opened and the electromagnetic valve 122a is closed. Thereby, when air is supplied to the balloon 42, the supplied air passes through the balloon controller 126, so that the internal pressure of the balloon 42 at the time of air supply can be reliably controlled. In cases other than the second-stage pressing operation, the electromagnetic valve 122a is opened and the electromagnetic valve 122b is closed, so that air is supplied to the air / water supply nozzle 56 without passing through the balloon controller 126.

  On the other hand, the pipeline 130 is branched into two on the way, and branched pipelines 130a and 130b are formed. Electromagnetic valves 132a and 132b are disposed in the branch pipes 130a and 130b, and communication and blocking are switched by the electromagnetic valves 132a and 132b. The above-described balloon controller 126 is disposed in the branch conduit 132b, and the pressure of the air flowing through the branch conduit 132b is controlled by the balloon controller 126. The pipe line 130 communicates with the outside via a leak pipe line 130c, and an electromagnetic valve 132c is disposed in the leak pipe line 130c.

  The three electromagnetic valves 132a to 132c are controlled according to the detection sensor 190 of the suction valve 98 described above. Specifically, when the suction button 34 is not operated, the electromagnetic valves 132a and 132b are closed and the electromagnetic valve 132c is opened. Thereby, the suction device 29 is communicated with the outside via the leak pipe 130c. Therefore, the negative pressure suction force does not work on the suction tube 100. Thus, by eliminating the negative pressure suction force in the non-operation state, it is possible to prevent the suction force from being applied suddenly when the suction button 34 is pressed.

  When the suction button 34 is in the first stage pressing operation state, the electromagnetic valve 132a is opened and the electromagnetic valves 132b and 132c are closed. Thereby, a negative pressure suction force is generated in the suction tube 100, and suction from the forceps port 58 can be performed.

  When the suction button 34 is in the second-stage pressing operation state, the electromagnetic valve 132b is opened and the electromagnetic valves 132a and 132c are closed. Thereby, the suction device 29 is communicated with the balloon 42 via the balloon controller 126. Therefore, air can be sucked from the balloon 42 and the internal pressure of the balloon 42 at the time of suction can be reliably controlled.

  In the present embodiment, the leakage conduit 132c that leaks when the suction button 34 is not operated is provided in the light source device 20. However, the present invention is not limited to this, and the inside of the endoscope 10, for example, suction The valve 98 may be provided.

  As described above, according to the present embodiment, air is supplied to the balloon 42 using the air pump 21 that supplies air to the air / water supply nozzle 56 and the suction device 29 that sucks air from the forceps port 58.・ Can be aspirated. Therefore, an air pump and a suction device dedicated to the balloon 42 are not necessary, and the entire device can be reduced in size. In addition, since the configuration of the entire apparatus is simplified, the number of cords that connect the endoscope 10 and peripheral devices is reduced. Therefore, there is no possibility that the cords will be tangled, so that the operability of the endoscope 10 can be improved.

  In the present embodiment, the air supply / water supply valve 86 is used to supply air to the balloon 42, and the suction valve 98 is used to perform air suction from the balloon 42. Can be reduced. Further, since the air supply tube 88 and the suction tube 100 can be used as a dual-purpose conduit, the number of conduits inserted through the universal cable 16 is reduced, and the universal cable 16 can be reduced in diameter.

  Further, in the present embodiment, the air / water supply valves 86 and 98 have a two-stage push-down operation structure, so that the air supply / suction to the balloon 42 is performed only by operating the air / water supply button 32 and the suction button 34. Can be operated. Therefore, the surgeon can control the inflation / deflation of the balloon 42 with one hand holding the hand operation unit 14, and the operability is very good.

  In the above-described embodiment, air is supplied to the balloon 42. However, the present invention is not limited to this, and water may be supplied to the balloon 42. In this case, the water flowing through the water supply tube 90 may be supplied to the balloon tube 96.

  In the above-described embodiment, the valves 86 and 98 have a two-stage pressing structure. However, the present invention is not limited to this, and any configuration may be used as long as the supply / suction of air to the balloon 42 can be switched. Further, an electromagnetic valve may be provided in place of the valves 86 and 98 to perform switching control.

  In the embodiment described above, the light source device 20 and the suction device 29 are provided separately, but the suction device 29 may be provided inside the light source device 20.

  Furthermore, the present invention can also be applied to an endoscope apparatus using an insertion assisting tool 70 as shown in FIGS. The insertion assisting tool 70 shown in FIG. 10 is formed in a cylindrical shape having an inner diameter slightly larger than the outer diameter of the insertion portion 12, and has sufficient flexibility. A rigid gripping portion 74 is provided at the proximal end of the insertion assisting tool 70, and the insertion portion 12 is inserted from the gripping portion 74. In the vicinity of the distal end of the insertion assisting tool 70, a latex balloon 72 is attached. The second balloon 72 is formed in a substantially cylindrical shape whose both ends are narrowed, and is attached in a state where the insertion assisting tool 70 is penetrated.

  A supply / suction port 76 is formed in the grip portion 74 of the insertion assisting tool 70. The supply / suction port 76 communicates with the second balloon 72 via a conduit 78 as shown in FIG. Further, the end of the tube 79 is connected to the supply / suction port 76, and the other end of the tube 79 is connected to a connecting part 81 provided in the hand operation part 14 of the endoscope 10. A tube 83 is connected to the connecting portion 81, and the tube 83 is branched and connected to an air / water supply valve 87 and a suction valve 99.

  Each of the air / water supply valve 87 and the suction valve 99 has a three-stage pressing structure. The air / water supply valve 87 is operated in the same manner as the air / water supply valve 86 shown in FIGS. 4 to 6 (no operation, closing operation, first stage pressing operation, second stage pressing operation). A three-stage pressing operation can be performed, and the tube 83 communicates with the air supply tube 88 during the third-stage pressing operation. Thereby, air can be supplied to the balloon 72 and the balloon 72 can be inflated.

  The suction valve 99 can perform a third stage pressing operation in addition to the same operations (no operation, first stage pressing operation, second stage pressing operation) as the suction valve 98 shown in FIGS. The tube 83 communicates with the suction tube 100 during the third-stage pressing operation. Thereby, air can be sucked from the balloon 72 and the balloon 72 can be deflated.

  When the air / water supply valve 87 and the suction valve 99 are in the third-stage depressing operation state, the internal pressure of the balloon 72 is made by communicating the conduits 120 and 130 in the light source device 20 with the balloon controller 20. It is preferable to manage.

  According to the endoscope apparatus configured as described above, by operating the air / water supply button 32 and the suction button 34, the balloon 42 on the insertion portion 12 side is inflated and contracted, and the balloon on the insertion aid 70 side. 72 can be controlled.

The system block diagram which shows the endoscope apparatus which concerns on this invention The perspective view which shows the front-end | tip part of the insertion part of FIG. Pipe line configuration diagram schematically showing the pipe line of the endoscope apparatus Sectional view showing the configuration of the air / water supply valve Sectional drawing of the state where the air / water supply valve shown in FIG. Sectional drawing of the state where the air / water supply valve shown in FIG. Sectional view showing the configuration of the suction valve Sectional drawing of the state where the suction valve shown in FIG. Sectional drawing of the state where the suction valve shown in FIG. System configuration diagram showing an endoscope apparatus having an insertion assisting tool Pipe line configuration diagram of the endoscope apparatus of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Endoscope, 12 ... Insertion part, 14 ... Hand operation part, 32 ... Air supply / water supply button, 34 ... Suction button, 42 ... Balloon, 46 ... Tip part, 56 ... Air supply / water supply nozzle, 58 ... Forceps Mouth, 70 ... Insertion aid, 86 ... Air / water valve, 98 ... Suction valve

Claims (2)

An endoscope, a fluid supply device, and a suction device are provided, and a fluid ejection nozzle that communicates with the fluid supply device and a suction port that communicates with the suction device are formed at the distal end of the insertion portion of the endoscope. And an endoscope device in which an inflatable balloon is mounted on the outer peripheral surface of the insertion portion.
The balloon communicates with the fluid supply device via a supply valve that operates to supply a fluid to the fluid ejection nozzle, and fluid from the fluid supply device is supplied to the balloon by operating the supply valve. And
The balloon is communicated with the suction device via a suction valve that operates the suction of fluid from the suction port, and the balloon fluid is sucked into the suction device by operating the suction valve;
A balloon controller for controlling a pressure of the balloon is provided in a supply conduit that communicates the balloon and the fluid supply device, and a suction conduit that communicates the balloon and the suction device. Mirror device. The supply pipe line and the suction pipe line have two branch pipes provided with a valve for switching between communication and blocking, and the balloon controller is provided in one of the two branch pipe lines,
The supply valve and the suction valve are provided with a sensor for detecting an operation state of supplying fluid to the balloon and an operation state of sucking fluid from the balloon,
The endoscope apparatus according to claim 1, wherein when the detection by the sensor is performed, the valve is switched and the fluid flows through a branch pipe in which the balloon controller is disposed.

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