JP4487317B2 - Balloon control device for double balloon endoscope - Google Patents

Description

  The present invention relates to a balloon control device for a double-balloon endoscope, and more particularly to a balloon control device for a double-balloon endoscope that can improve safety when the double-balloon endoscope is used.

  As an alternative to the conventional small intestine endoscope, there is a double balloon type endoscope. This double-balloon endoscope has a balloon attached to the tip of the endoscope, and a balloon-type endoscope that can supply and suck air to the balloon, and an insertion portion of the balloon-type endoscope is inserted. It is a tube, and a balloon is attached to the distal end of the tube, and an overtube capable of supplying and sucking air to the balloon is constituted. The double balloon type endoscope is connected to a balloon control device for inflating each balloon separately, and the balloon control device supplies and sucks air to each balloon separately.

  When inserting this double-balloon endoscope into the small intestine, each balloon is inflated alternately, the endoscope tip or overtube tip is alternately fixed to the intestinal wall, and the endoscope insertion part on the non-fixed side or Move the overtube and small intestine relatively. As a result, the intestinal tract is pulled by using the portion fixed by the balloon as a fulcrum, and the distal end of the double balloon endoscope can be relatively inserted to the deep part of the small intestine.

On the other hand, in an endoscope air supply device for supplying air to an endoscope having a conventional air tube, the pressure in a closed space between the compressor in the device and the connection tube connected to the endoscope Is detected, and pressure adjustment is performed so that the detected pressure becomes a set pressure, and when the detected pressure becomes abnormal, there is a technique that eliminates the abnormal state (Patent Document 1).
JP 2000-217779 A

  An endoscope provided with an air tube described in Patent Document 1 discharges air (air) having various discharge pressures to a body cavity such as a stomach in order to examine the state of an affected part. A double balloon endoscope It is not inserted while inflating each balloon alternately.

  On the other hand, in the case of a double balloon type endoscope that is inserted to the deep part of the small intestine while inflating each balloon alternately, a tube connected to the balloon air supply port of each balloon type endoscope or overtube when each balloon is torn If there is disconnection or connection failure, there is a problem that the pressure of the balloon does not reach the specified pressure (the pressure required to fix it to the intestinal wall). There is a problem that the pressure of the balloon becomes high and the intestinal tract is damaged due to the malfunction of the above.

  Also, when inserting a double-balloon endoscope up to the small intestine, the balloon may be inflated and inserted even in the stomach or large intestine, especially in the large intestine, it may be inserted without using a balloon because it is bent. Many. The set pressure when the balloon is fixed to the intestinal wall is set to a constant pressure that fits the human intestine. However, in the case of a large intestine with a large lumen diameter, the size of the balloon reaches the lumen. However, there is a problem that the pressure does not rise to the set pressure.

  Furthermore, when connecting the air supply and suction tubes to the balloon air supply ports of the balloon endoscope and the overtube, there is a possibility that the connections of the tubes may be wrong.

  The present invention has been made in view of such circumstances, and it is possible to improve the safety in use of a double balloon endoscope and to provide a user-friendly balloon control device for a double balloon endoscope. The purpose is to provide.

  In order to achieve the above object, the invention according to claim 1 includes a balloon-type endoscope in which a first balloon is attached to the distal end of an endoscope, and air supply / suction to the first balloon is possible. A double balloon comprising an overtube into which an insertion portion of a balloon endoscope is inserted, the second balloon being attached to the distal end of the tube, and an overtube capable of supplying and sucking air to the second balloon In the balloon control device of the type endoscope, the first tube and the second tube connected to the balloon air supply port of the balloon type endoscope and the overtube, respectively, and the first and second tubes, respectively. The pump means for supplying and sucking air to the first and second balloons separately, and pressurizing / depressurizing the first balloon and the second balloon are separately instructed. Operating means, a first pressure sensor and a second pressure sensor for detecting pressures in the first tube and the second tube, respectively, a breakage of the first and second balloons, an abnormal pressure and the first pressure sensor. 1. First abnormality detecting means and second abnormality detecting means for detecting abnormality such as detachment of the second tube, stop switch for canceling abnormality notification, and the first and second abnormality detecting means. An abnormality is notified when an abnormality is detected, and when the stop switch is operated, an abnormality notification means for stopping the notification of the abnormality, and when pressurization or pressure reduction is instructed by the operation means, the first and second pressures Based on the pressure detected by the sensor, air supply / suction from the pump means to the first and second tubes is controlled so that the first and second balloons have a preset pressure or negative pressure. Control means It is characterized in.

  That is, when each balloon is inflated or deflated, if an abnormality such as tearing of each balloon, abnormal pressure, disconnection of the tube, or the like is detected, it is notified that there is an abnormality, and thus risk avoidance measures can be taken. I can do it. Abnormality notification can be performed, for example, by generating an alarm sound such as a buzzer, turning on a warning lamp, or displaying a warning. Further, the lighting of the warning lamp and the warning display may be performed on a monitor for observing the image of the balloon endoscope. Further, when the stop switch is operated, the abnormality notification by the abnormality notification means stops.

  According to a second aspect of the present invention, in the balloon control device for the double balloon endoscope according to the first aspect, the control means is configured to detect an abnormality after the abnormality detection means during pressurization by the pump means. When the stop switch is operated, the pump means is depressurized.

  According to a third aspect of the present invention, there is provided a balloon-type endoscope in which a first balloon is attached to the distal end of the endoscope and capable of supplying and sucking air to the first balloon, and insertion of the balloon-type endoscope Control of a double-balloon endoscope comprising an overtube into which a second balloon is attached and an overtube capable of supplying and sucking air to and from the second balloon In the apparatus, a first tube and a second tube respectively connected to the balloon endoscope and the balloon air supply port of the overtube, and the first and second tubes via the first and second tubes, respectively. Pump means for separately supplying and sucking air to each of the balloons, operating means for separately instructing pressurization / depressurization of the first balloon and the second balloon, and the first channel A first pressure sensor and a second pressure sensor for detecting the pressure in the tube and the second tube, respectively, the first and second balloons being broken, abnormal pressure and the first and second tubes First abnormality detecting means and second abnormality detecting means for detecting abnormality such as detachment, timer means for measuring an elapsed time from an abnormality detection time by the first and second abnormality detecting means, and the first When the abnormality is detected by the second abnormality detecting means, an abnormality is notified, and when the predetermined time is counted by the timer means, an abnormality notifying means for stopping the abnormality notification, and pressurization or decompression is instructed by the operating means Then, based on the detected pressure of the first and second pressure sensors, the first and second pressures from the pump means are set so that the first and second balloons have preset pressures or negative pressures. Air supply to tube 2 And control means for controlling the suction is characterized by having a.

  According to a fourth aspect of the present invention, in the balloon control device for the double balloon endoscope according to the third aspect, the control means may be configured such that after the abnormality is detected by the abnormality detection means during the pressurization by the pump means. When the predetermined time is counted by the timer means, the pump means is depressurized. That is, as shown in claims 3 and 4, measures such as stoppage of anomaly notification or decompression automatically with the passage of time from the occurrence of the anomaly without actively taking measures to avoid the anomaly Is done.

  According to a fifth aspect of the present invention, there is provided a balloon endoscope in which a first balloon is attached to the distal end of the endoscope and capable of supplying and sucking air to the first balloon, and insertion of the balloon endoscope Control of a double-balloon endoscope comprising an overtube into which a second balloon is attached and an overtube capable of supplying and sucking air to and from the second balloon In the apparatus, a first tube and a second tube respectively connected to the balloon endoscope and the balloon air supply port of the overtube, and the first and second tubes via the first and second tubes, respectively. Pump means for separately supplying and sucking air to each of the balloons, first operating means for separately instructing pressurization / depressurization of the first balloon and the second balloon, and the first Second operating means for separately instructing to stop the pressurization / decompression of the balloon and the second balloon, a first pressure sensor for detecting the pressure in the first tube and the second tube, respectively, Two pressure sensors, first abnormality detecting means and second abnormality detecting means for detecting abnormalities such as tearing of the first and second balloons, abnormal pressure, and disconnection of the first and second tubes; An abnormality notifying means for notifying an abnormality when abnormality is detected by the first and second abnormality detecting means, and when the pressurization or depressurization is instructed by the first operating means, the first and second pressure sensors; Controlling the air supply / suction from the pump means to the first and second tubes so that the first and second balloons have a preset applied pressure or negative pressure based on the detected pressure of Pressurized by the second operating means Decompression stop is instructed, is characterized by comprising a control means for temporarily stopping the current pressurization and pressure reduction by the pump means to maintain the pressure, a it is.

  That is, apart from the first operating means for instructing the pressure of each balloon to be a preset applied pressure or negative pressure, provided is a second operating means for instructing the stop of pressurization / decompression for each balloon, When the second operating means is operated, the pressurization or decompression operation is temporarily stopped to maintain the current pressure.

  In the balloon control device for a double balloon endoscope according to any one of claims 1 to 5, the first and second abnormality detection means may be configured to apply pressure during pressurization by the pump means. The first and second pressure sensors detect a predetermined abnormal pressure higher than a preset applied pressure, and an abnormality is detected when the detection of the abnormal pressure continues for a predetermined time.

As shown in claim 7, in the balloon control device for a double balloon endoscope according to any one of claims 1 to 6, the first tube and the second tube have mutually different tube colors or patterns. It is characterized by being different . Thereby, the connection mistake of the connector of a 1st, 2nd tube and each balloon air supply port of a double balloon type | mold endoscope can be prevented.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the safety | security in use of a double balloon type | mold endoscope, the balloon control apparatus of the double balloon type | mold endoscope which is easy to use can be provided.

  A preferred embodiment of a balloon control device for a double balloon endoscope according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a system configuration diagram of an endoscope apparatus including a balloon control apparatus for a double balloon endoscope according to the present invention.

  As shown in the figure, this endoscope apparatus is composed of a double balloon endoscope composed of a balloon endoscope 10 and an overtube 50, and a balloon control device 100.

  The balloon endoscope 10 is an electronic endoscope in which a photographing lens and an imaging element (for example, CCD) are provided at the distal end of the insertion portion 12, and an observation image is formed on the CCD via the photographing lens. Here, photoelectric conversion is performed. An electrical signal indicating an observation image that has been subjected to photoelectric conversion is output to a processor (not shown) via wiring in the insertion unit 12 and the hand operation unit 14, and is appropriately signal processed and then output to the monitor TV. Thereby, an observation image can be displayed on the monitor TV.

  An air supply / suction port 16 is provided on the side of the distal end of the insertion portion 12 of the balloon endoscope 10, while a balloon air supply port 18 is provided on the hand operation unit 14 side. 16 and the balloon air supply port 18 are connected by an air supply tube having an inner diameter of about 0.8 mm provided along the insertion portion 12.

  When the balloon endoscope 10 is used as a double balloon endoscope, the balloon 20 is put on the distal end of the insertion portion 12, and both ends of the balloon 20 are fixed with fixing rubber. Thereby, air (air) is supplied into the balloon 20 from the balloon air supply port 18 through the air supply / suction port 16 to inflate the balloon 20, or the air in the balloon 20 is sucked to contract (insert) the balloon 20. Part).

  The overtube 50 is for inserting the insertion portion 12 of the balloon endoscope 10 into the deep part of the small intestine in cooperation with the balloon endoscope 10. The inner diameter is slightly larger than the outer diameter, and is flexible like the insertion portion 12 of the balloon endoscope 10.

  An air supply / suction port 52 is provided on the side surface of the distal end of the overtube 50, and a balloon 54 is attached around the tip of the tube so as to surround the air supply / suction port 52. A balloon air supply port 56 is provided at the rear portion of the overtube 50. The balloon air supply port 56 and the air supply / suction port 52 are integrally formed along the outer periphery of the overtube 50 and have an inner diameter of about 1 mm. The air supply tube 58 is connected. With the above configuration, air is supplied into the balloon 54 from the balloon air supply port 56 via the air supply tube 58 and the air supply suction port 52 to inflate the balloon 54, or the air in the balloon 54 is sucked into the balloon 54. It can be shrunk. Reference numeral 60 denotes a water injection port for injecting lubricant (water) into the overtube 50.

  The balloon control device 100 supplies and sucks air separately to the balloons 20 and 54 in order to inflate the balloon 20 at the distal end of the insertion portion of the balloon endoscope 10 and the balloon 54 at the distal end of the overtube 50 alternately. It is composed of an apparatus main body 102 provided with a pump, a sequencer, and the like, and a hand switch 104 for remote control.

  The front panel of the main body 102 of the balloon control device 100 is provided with a power switch SW1, a stop switch SW2 operated when an abnormality occurs, a pressure gauge 106 for the balloon 20, a pressure gauge 108 for the balloon 54, and the like. Yes.

  Further, air supply / suction tubes 110, 120 to the balloons 20, 54 are attached to the front panel of the apparatus main body 102. The inner diameter of each tube 110, 120 is about 6 mm.

  In the middle of each tube 110, 120, there are provided a liquid reservoir tank 130 for an endoscope and a liquid reservoir tank 140 for an overtube for preventing a back flow of body fluid when the balloon is broken. The reservoir tanks 130 and 140 are detachably attached to the front panel of the apparatus main body 102.

  The tube 110 and the tube 120 connect the tube 110 to the balloon air supply port 56 on the overtube side or prevent connection mistakes connecting the tube 120 to the balloon air supply port 18 on the endoscope side. Each tube has a different color and pattern, and the connectors 112 and 122 have different shapes and sizes.

  FIG. 2 shows an example of a connector (balloon air inlet) 56 on the overtube side and a connector 122 at the tip of the tube 120.

  As shown in the figure, a male screw 56A is formed at one end of the connector 56, and the center of the connector 56 including the male screw 56A is formed hollow and connected to a tube 57 connected to the overtube 50. Yes.

  On the other hand, the connector 122 at the tip of the tube 120 is formed with a female screw 122A that is screwed with the male screw 56A of the connector 56, and a protrusion inserted into the male screw 56A of the connector 56 is formed at the center of the female screw 122A. A portion 123 is formed. The center of the connector 122 including the protruding portion 123 is hollow and connected to the tube 120.

  The connectors 56 and 122 can be connected in an airtight manner by screwing together.

  Here, as shown in FIG. 1, the connector 112 of the tube 110 on the endoscope side and the connector 122 (see FIG. 2) of the tube 120 have connector shapes and sizes (including screw diameter, pitch, etc.). They are formed different from each other. Thereby, incorrect connection such as connecting the connector 112 to the balloon air supply port 56 on the overtube side or connecting the connector 122 to the balloon air supply port 18 on the endoscope side cannot be performed (a connection error can be prevented). It is like that.

  The connector shape and size of the endoscope side (balloon air supply port) 18 and the overtube side connector (balloon air supply port) 56 can be connected to the corresponding connectors 112 and 122. Needless to say, they are formed differently.

  Further, in order to prevent a connection error between the balloon air inlet 56 provided in the overtube 50 and the water inlet 60, the shape and size of the balloon air inlet 56 and the water inlet 60, or the tube Etc., such as different colors and patterns.

  On the other hand, the hand switch 104 includes a stop switch SW3 similar to the stop switch SW2 provided on the apparatus main body 102 side, and an endoscope ON / OFF switch SW4 that instructs pressurization / decompression of the balloon 20 on the endoscope side. A pause switch SW5 for maintaining the pressure of the balloon 20 on the endoscope side, an overtube ON / OFF switch SW6 for instructing pressurization / depressurization of the balloon 54 on the overtube side, and a balloon 54 on the overtube side A pause switch SW7 is provided for holding the pressure, and this hand switch 104 is electrically connected to the apparatus main body 102 via a cord 150.

  Next, an operation when using the double balloon endoscope having the above-described configuration will be described.

  The insertion portion 12 of the balloon endoscope 10 is inserted into the overtube 50, the tube 110 of the balloon control device 100 is connected to the balloon air supply port 18 on the endoscope side, and the tube 120 is fed to the balloon on the overtube side. Connect to the mouth 56.

  Subsequently, the insertion portion of the double-balloon endoscope is inserted to the small intestine via the stomach or large intestine, but when inserting to the deep portion of the small intestine, the balloons 20 and 54 are alternately inflated. That is, the endoscope ON / OFF switch SW4 of the hand switch 104 is turned on to instruct pressurization, and air is supplied from the device main body 102 of the balloon control device 100 to the balloon 20 via the tube 110. Inflate until the set pressure is reached. Thereby, the distal end of the insertion portion of the balloon endoscope 10 is fixed to the intestinal wall. On the other hand, the overtube ON / OFF switch SW6 of the hand switch 104 is turned OFF to command pressure reduction, and suction is performed until the tube 120 or the like connected to the balloon 54 has a negative pressure set in advance, the balloon 54 is deflated, The overtube 50 and the intestinal tract can be moved relative to each other.

  In this state, the overtube 50 is advanced until the tip of the overtube 50 reaches the vicinity of the tip of the balloon endoscope 10.

  Subsequently, contrary to the above case, the overtube ON / OFF switch SW6 of the hand switch 104 is turned on to instruct pressurization, and air is supplied from the apparatus main body 102 to the balloon 54 via the tube 120. Inflate until 54 reaches the preset pressure. Thereby, the tip of the overtube 50 is fixed to the intestinal wall. On the other hand, the endoscope ON / OFF switch SW4 of the hand switch 104 is turned OFF to command a pressure reduction, and suction is performed until the tube 110 or the like connected to the balloon 20 reaches a preset negative pressure, and the balloon 20 is deflated. Then, the insertion portion 12 of the balloon endoscope 10 and the intestinal tract are moved relative to each other, and the insertion portion 12 of the balloon endoscope 10 is advanced.

  While repeating the above operation, the distal end of the double balloon endoscope is advanced while moving the fixing point of each balloon from the deep part to the deep part. When the complex loop is formed, the overtube 50 is slowly pulled together with the balloon endoscope 10 in a state where both the balloons 20 and 54 are expanded. By this operation, the loop is simplified and the inserted intestinal tract is shortened so as to be folded on the overtube 50 without the tip of the endoscope being pulled out. The above series of operations is repeated, the intestinal tract is folded on the overtube 50, and the insertion into the deep small intestine is advanced while simplifying the loop of the intestinal tract.

  Next, the internal structure of the balloon control device 100 will be described. FIG. 3 is a block diagram showing an embodiment of the internal structure of the balloon control device 100.

  As shown in the figure, the main body 102 of the balloon control device 100 is mainly composed of a power supply circuit 160, a sequencer 170, an endoscope control system A, and an overtube control system B. Yes.

  The power supply circuit 160 converts the commercial power input from the power plug 162 into a DC power supply of a required voltage and supplies it to each part in the apparatus main body 102, and includes a fuse, a power transformer, an AC / DC converter, and the like. Yes. A power switch SW <b> 1 is provided in the middle of the power circuit 160. A switching power supply may be used instead of the power transformer and the AC / DC converter.

  The sequencer 170 separately controls the control system A for the endoscope and the control system B for the overtube based on various commands from the hand switch 104, and detects the pressure abnormality and the buzzer BZ. Or sound. The detailed operation of the sequencer 170 will be described later.

  The endoscope control system A includes a pressurizing pump PA1 driven mainly by a motor A1, a pressure reducing pump PA2 driven by a motor A2, and an electromagnetic valve VA1 for turning on / off the air supply from the pump PA1. , A solenoid valve VA2 for turning on / off suction by the pump PA2, a solenoid valve VA3 for switching between pressurization / depressurization, and a pressure sensor for detecting the pressure of the tube 110 that supplies and sucks air to the balloon 20 via the manifold M It consists of SA1 and SA2.

  Activation / deactivation of the pressurizing pump PA1 and the depressurizing pump PA2 is controlled by the sequencer 170. Note that the pressurizing pump PA1 and the depressurizing pump PA2 are adjusted so that the required pressurizing force and the depressurizing force are obtained by the pressurizing adjustment volume VR1 and the depressurizing adjustment volume VR2, respectively. Further, the pressurization adjustment volume VR1 and the decompression adjustment volume VR2 may be omitted as long as desired pressurizing force and decompression force can be obtained.

  Each of the three solenoid valves VA1, VA2, and VA3 is a three-way two-position solenoid valve. When the solenoids of the solenoid valves VA1, VA2, and VA3 are energized by a drive signal from the sequencer 170, the solenoid valves VA1, VA2, and VA3 are turned on. When switched to a and the solenoid is de-energized, it is turned OFF and switched to position b.

  The electromagnetic valves VA1, VA2, and VA3 shown in FIG. 3 are each OFF. In this state, the air in the balloon 20 can be sucked by driving the pressure reducing pump PA2. Further, when the electromagnetic valve VA3 is turned on from the state shown in FIG. 3 and the pressurizing pump PA1 is driven, air can be supplied to the balloon 20.

The pressure sensor SA1 includes a preset applied pressure P ₁ (for example, a pressure 5.6 kilopascals (Kpa) higher than the atmospheric pressure) and an abnormal pressure P ₂ higher than the applied pressure P ₁ (for example, 8.2 higher than the atmospheric pressure). (Kpa) high pressure), and the pressure sensor SA2 can detect a preset negative pressure P ₃ (for example, pressure 6.0 (Kpa) lower than atmospheric pressure). Since the pressure sensors SA1 and SA2 are pressure sensors that detect only two pressures, respectively, two pressure sensors are used to detect the _three pressures P ₁ , P ₂ , and P ₃ . One pressure sensor may be used as long as it can detect _three pressures P ₁ , P ₂ , and P ₃ .

The pressure detected by the pressure sensors SA1 and SA2 is applied to the sequencer 170. The pressure detected by the pressure sensor SA1 is applied to the pressure gauge 106, and the pressure of the balloon 20 is displayed here. Furthermore, the pressure gauge 106 is normally displayed but has a green, abnormal pressure P ₂ sometimes changes to red.

  Since the control system B for the overtube is the same as the control system A for the endoscope, its detailed description is omitted.

  Next, the endoscope liquid reservoir tank 130 will be described. A tube 110 that supplies and sucks air to and from the balloon 20 is connected to a pipe line connected to the balloon air supply port 18 of the balloon endoscope 10 via the check valve 132, the check valve 134, and the liquid reservoir tank 130. And a conduit connected to the balloon air supply port 18.

  When supplying air to the balloon 20, air is supplied to the balloon 20 via the check valve 132. When sucking air in the balloon 20, the liquid reservoir tank 130 and the check valve 134 sealed from the balloon 20 are connected. Air is sucked in via.

  If suction is performed in a state where the balloon 20 is torn, body fluid is also sucked together with air. However, according to the liquid reservoir tank 130 configured as described above, body fluid is accumulated in the liquid reservoir tank 130. Thereby, body fluid can be prevented from entering the balloon control device 100. The overtube liquid reservoir tank 140 is also configured in the same manner as the endoscope liquid reservoir tank 130, and therefore, detailed description thereof is omitted.

  Next, the operation of the sequencer 170 will be described in detail with reference to the flowcharts of FIGS. Note that the endoscope-side balloon control and the overtube-side balloon control by the sequencer 170 are performed in the same manner, and therefore, the endoscope-side balloon control will be described below.

  FIG. 4 is a flowchart showing an outline of the operation of the sequencer 170. In the figure, the sequencer 170 determines whether or not a decompression command for the balloon 20 (that is, turning off the endoscope ON / OFF switch SW4) is input from the hand switch 104 (step S10). When a decompression command is input, the decompression process shown in FIG. 5 is executed.

  Similarly, the sequencer 170 determines whether or not a pressurization command for the balloon 20 (that is, ON of the endoscope ON / OFF switch SW4) is input from the hand switch 104, and a pause command (pause switch for holding the pressure of the balloon 20). It is determined whether or not (SW5 ON) is input (steps S20 and S30). When a pressurization command is input, the pressurization process shown in FIG. 6 is executed. When a pause command is input, the pause process shown in FIG. 7 is executed.

  The key tops of the endoscope ON / OFF switch SW4 and the endoscope pause switch SW5 are respectively provided with a green LED and a white LED as shown in FIG. Lights up when the switch is ON. The overtube ON / OFF switch SW6 and the overtube pause switch SW7 are also provided with a green LED and a white LED, respectively.

  Next, the decompression process will be described with reference to the flowchart of FIG.

  First, the sequencer 170 resets the time T of the timer for measuring time to 0 (step S102), and then causes the control system A to perform a pressure reduction operation (step S104). That is, as shown in FIG. 3, the electromagnetic valves VA1, VA2, and VA3 are turned off and the pressure reducing pump PA2 is driven.

Subsequently, the detection signal from the pressure sensor SA2, it is determined whether or not it has reached the negative pressure P ₃ the pressure in the tube 110 has been set in advance (step S106), and reaches the negative pressure P _3, the pressure reduction operation Stop (step S108).

The decompression operation is stopped by energizing the solenoid of the electromagnetic valve VA2 and switching to the position a. Further, since the diameter of the air supply tube provided along the insertion portion 12 of the balloon endoscope 10 is sufficiently smaller than the diameter of the tube 110, the balloon 20 is started when air suction (decompression) is started. Before the pressure reaches the negative pressure P ₃ , the pressure in the tube 110 first reaches the negative pressure P ₃ , and the decompression operation stops. However, when the pressure of the balloon 20 does not reach the negative pressure P ₃ , the pressure in the tube 110 rises again and becomes larger than the negative pressure P ₃ . In this case, the sequencer 170 starts the pressure reducing operation again by the detection signal from the pressure sensor SA2. Thus, the pressure of the balloon 20 can be set to the negative pressure P ₃ by repeating the start and stop of the decompression operation a plurality of times.

On the other hand, if not reach the negative pressure P _3, the time T from the start of depressurization operation it is determined whether or not reached 30 seconds (step S110). Then, when the processes of steps S104, S106, and S110 are repeated until the time T reaches 30 seconds, it is determined that there is an abnormality (for example, the tube 110 and the balloon air inlet 18 are disconnected).

  When an abnormality is detected as described above, the timer time T is reset to 0 and a buzzer is sounded (steps S112 and S114). At the same time, the red LEDs arranged on the key tops of the stop switch SW2 provided in the apparatus main body 102 and the stop switch SW3 provided in the hand switch 104 are turned on.

  Thereafter, it is determined whether or not either of the stop switches SW2 or SW3 is pressed (step S116), and if it is pressed, the buzzer is stopped (step S118). On the other hand, when the stop switch SW2 or SW3 is not pressed, it is determined whether or not the time T since the buzzer sounded has elapsed, and when the 20 seconds have elapsed, the buzzer is automatically stopped.

  When an abnormality is notified by a buzzer or the like during the decompression operation, the operator of the double balloon endoscope normally checks whether or not the tube 110 is detached after pressing the stop switch SW2 or SW3. .

  Next, the pressurizing process will be described with reference to the flowchart of FIG.

  First, the sequencer 170 resets the time T of the timer to 0 (step S202), and then causes the control system A to perform a pressurizing operation (step S204). That is, the electromagnetic valve VA3 is turned on and the pressurizing pump PA1 is driven.

Subsequently, the detection signal from the pressure sensor SA1, it is determined whether or not reached the increased pressure P ₁ the pressure preset in the tube 110 (step S206), if they reached the increased pressure P ₁ is , to determine whether further reached the abnormal pressure P ₂ (step S208). When it does not reach the abnormal pressure P ₂ stops the pressurization operation (step S210).

The pressurization operation is stopped by energizing the solenoid of the electromagnetic valve VA1 and switching to the position a. In addition, since the diameter of the air supply tube provided along the insertion portion 12 of the balloon endoscope 10 is sufficiently smaller than the diameter of the tube 110, when air supply (pressurization) is started, the balloon Before the pressure of 20 reaches the applied pressure P ₁ , the pressure in the tube 110 reaches the applied pressure P _{1 first} , and the pressurizing operation is stopped. However, when the pressure of the balloon 20 does not reach the applied pressure P ₁ , the pressure in the tube 110 decreases again and becomes smaller than the applied pressure P ₁ . In this case, the sequencer 170 starts the pressurizing operation again by the detection signal from the pressure sensor SA1. Thus, the pressure of the balloon 20 can be set to the applied pressure P ₁ by repeating the start and stop of the pressurizing operation a plurality of times.

On the other hand, small intestine and go peristalsis, abnormalities of the apparatus body 102 (e.g., abnormality of the electromagnetic valve VA1) when pressurization operation by does not stop, if the pressure in the tube 110 reaches the abnormal pressure P ₃ is there. In this case, the process proceeds from step S208 to step S212, where it is determined whether or not the abnormal pressure P ₃ has continued for 5 seconds.

When the abnormal pressure P ₃ continues for 5 seconds, the timer time T is reset to 0 and a buzzer is sounded (steps S214 and S216). At the same time, the red LEDs arranged on the key tops of the stop switches SW2 and SW3 are turned on.

Thereafter, it is determined whether or not either of the stop switches SW2 or SW3 is pressed (step S218), and if it is pressed, the buzzer is stopped (step S220). Subsequently, the pressure reducing operation is performed until the abnormal pressure P ₂ becomes the applied pressure P ₁ (step S222). This pressure reduction operation is performed by turning off the electromagnetic valve VA3 and switching to the position b. In this case, for example, even when the solenoid valve VA1 is broken and the pressurizing operation cannot be stopped, the pressure can be reduced by switching the solenoid valve VA3.

Subsequently, the timer time T is reset to 0 (step S224), and it is determined whether or not another switch SW is operated, such as an OFF (decompression) operation of the endoscope ON / OFF switch SW4 (step S226). When there is no operation of the other switches SW Between buzzer is stopped for 20 seconds (step S228), the process proceeds to step S230, the a depressurization operation for decompression to a negative pressure P ₃ is performed. In step S226, when it is determined that another switch SW is operated, balloon control based on the command of the switch SW is performed.

If it is determined in step S218 that the stop switch SW2 or SW3 has not been pressed, it is subsequently determined whether or not another switch SW has been operated (step S232). The stop switch SW2 or SW3 is not pressed after the buzzer sounds, and the state no operation other switches SW is continued for 20 seconds ((step S234), stops the buzzer (step S236), until the negative pressure P ₃ A decompression operation for decompressing is performed (step S230).

On the other hand, the process returns to step S206, when the pressure in the tube 110 does not reach the increased pressure P ₁ in the pressurization Sakuchu, time T from the start of pressurization operation is determined whether or not reached 60 seconds (Step S238). Then, when the processes of steps S204, S206, and S238 are repeated until the time T reaches 60 seconds, it is determined that there is an abnormality (for example, the tube 110 and the balloon air inlet 18 are disconnected).

  When an abnormality is detected as described above, the timer time T is reset to 0 and a buzzer is sounded (steps S240 and S242). At the same time, the red LEDs arranged on the key tops of the stop switches SW2 and SW3 are turned on.

Thereafter, it is determined whether or not either the stop switch SW2 or SW3 has been pressed (step S244), and if it has been pressed, the buzzer is stopped (step S246). Subsequently, the timer time T is reset to 0 (step S248), and it is determined whether or not another switch SW is operated (step S250). When there is no operation of the other switches SW Between buzzer is stopped for 20 seconds (step S252), the process proceeds to step S230, the a depressurization operation for decompression to a negative pressure P ₃ is performed.

On the other hand, if the stop switch SW2 or SW3 is not pressed in step S244, it is determined whether or not the time T since the buzzer sounded has elapsed 20 (step S254). after halting on buzzer (step S256), the process proceeds to step S230, the a depressurization operation for decompression to a negative pressure P ₃ is performed.

  Next, abnormality detection when the balloon 20 is torn will be described.

Because the diameter of the air supply tube provided along the insertion portion 12 of the balloon endoscope 10 is smaller than the diameter of the tube 110 (the diameter of the tube 110 is about 6 mm, and the diameter of the air supply tube is about 0.8 mm). , when the air supply (pressurization) is started, the pressure in the tube 110 before the pressure in the balloon 20 reaches the increased pressure P ₁ reaches the increased pressure P ₁ before, pressurizing operation is stopped. However, when the pressure in the balloon 20 has not reached the increased pressure P _1, the air in the tube 110, to be supplied to the balloon 20 via the air supply tube, pressure in the tube 110 is again reduced, It becomes smaller than the applied pressure P ₁ . In this case, the sequencer 170 starts the pressurizing operation again by the detection signal from the pressure sensor SA1.

When the balloon 20 is not torn, the pressure of the balloon 20 can be made the applied pressure P ₁ by repeating the start and stop of the pressurizing operation a plurality of times. However, when the balloon 20 is torn In this case, the pressure of the balloon 20 cannot be made the applied pressure P ₁ even if the pressurizing operation is repeated for a long time.

  Thus, in this embodiment, the pressurization operation is repeatedly started and stopped in a short cycle (that is, ON / OFF chattering of the electromagnetic valve VA1) occurs during the pressurization operation of the normal balloon 20 that is deflated. When it continues for a time sufficiently longer than the chattering period (for example, 40 seconds), it is determined that the balloon 20 is broken and a buzzer is sounded.

  Next, the pause process will be described with reference to the flowchart of FIG.

  The sequencer 170 determines whether the input of the pause command for holding the pressure of the balloon 20 (ON of the pause switch SW5) was during the decompression operation or the pressurization operation (step S302). If the pause command is input during the pressure reducing operation, the solenoid of the electromagnetic valve VA2 is energized, the electromagnetic valve VA2 is switched to the position a, and the pressure reducing operation is stopped (step S304).

  On the other hand, when a pause command is input during the pressurizing operation, the solenoid of the electromagnetic valve VA1 is energized, the electromagnetic valve VA1 is switched to the position a, and the pressurizing operation is stopped (step S306).

This pause function is used, for example, when a double balloon endoscope is inserted while inflating a balloon in the large intestine. That is, in the large intestine having a larger lumen diameter than the small intestine, although the balloon size reaches the lumen, the balloon pressure may not rise to the preset pressure P _1. The pressurizing operation is stopped using the pause function.

  When operating a double balloon endoscope, since a fluoroscopic image is usually observed, it can be determined from this fluoroscopic image whether the balloon is sufficiently inflated in the large intestine.

  When the pause switch SW5 is pressed again during the temporary stop of the pressure reducing operation or the pressurizing operation, the pressure reducing operation or the pressurizing operation before the temporary stop is restored. Further, when the pressurization or pressure reduction switch (endoscope ON / OFF switch SW4) is pressed during the temporary stop of the pressure reduction operation or pressurization operation, the operation by the pressed switch has priority.

  In this embodiment, the control system A for endoscope and the control system B for overtube are each provided with a pressurizing pump and a depressurizing pump, but these pumps are used for the endoscope. And may be shared for overtubes.

Further, the applied pressure P ₁ , the abnormal pressure P ₂ , and the negative pressure P ₃ can be arbitrarily set for each endoscope and overtube. Further, the control for inflating and deflating each balloon may be performed by detecting the flow rate of air supplied to the balloon or sucked from the balloon, in addition to the control based on the pressure detected by the pressure sensor.

System configuration diagram of an endoscope apparatus including a balloon control apparatus for a double balloon endoscope according to the present invention The figure which shows an example of the structure of the connector of the balloon air inlet and the tip of a tube The block diagram which shows the internal structure of the balloon control apparatus of the double balloon type endoscope which concerns on this invention The flowchart which shows the outline of operation | movement of the sequencer shown in FIG. Flowchart used to explain the operation of the sequencer shown in FIG. Flowchart used to explain the operation of the sequencer shown in FIG. Flowchart used to explain the operation during the pause process of the sequencer shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Balloon type endoscope, 12 ... Insertion part, 16, 52 ... Air supply suction port, l8, 56 ... Balloon air supply port, 20, 54 ... Balloon, 50 ... Over tube, 58 ... Air supply tube, 100 ... Balloon control device, 102 ... device main body, 104 ... hand switch, 106, 108 ... pressure gauge, 110, 120 ... tube, 130, 140 ... liquid reservoir tank, 150 ... cord, 160 ... power supply circuit, 170 ... sequencer, A, B ... Control system, PA1, PA2 ... Pump, VA1, VA2, VA3 ... Solenoid valve, SA1, SA2 ... Pressure sensor, SW1 ... Power switch, SW2, SW3 ... Stop switch, SW4 ... Endoscope ON / OFF switch, SW5 , SW7: Pause switch, W6: Overtube ON / OFF switch

Claims (7)

A balloon-type endoscope in which a first balloon is attached to the distal end of the endoscope and air can be supplied to and sucked from the first balloon; and an overtube into which an insertion portion of the balloon-type endoscope is inserted In the balloon control device of the double balloon type endoscope, the second balloon is attached to the distal end of the tube, and an overtube capable of supplying and sucking air to the second balloon is provided.
A first tube and a second tube respectively connected to the balloon-type endoscope and the balloon air inlet of the overtube;
Pump means for separately supplying and sucking air to the first and second balloons via the first and second tubes,
Operating means for separately instructing the pressurization / decompression of the first balloon and the second balloon;
A first pressure sensor and a second pressure sensor for detecting pressures in the first tube and the second tube, respectively;
A first abnormality detecting means and a second abnormality detecting means for detecting abnormalities such as breakage of the first and second balloons, abnormal pressure and disconnection of the first and second tubes;
A stop switch for canceling the alarm,
Anomaly notifying means for informing an abnormality at the time of anomaly detection by the first and second anomaly detecting means and stopping the anomaly notification when the stop switch is operated;
When pressurization or depressurization is instructed by the operation means, the first and second balloons are set to a preset pressurization pressure or negative pressure based on the detected pressures of the first and second pressure sensors. Control means for controlling air supply / suction to the first and second tubes from the pump means;
A balloon control device for a double-balloon endoscope, comprising:   2. The control unit according to claim 1, wherein when the stop switch is operated after an abnormality is detected by the abnormality detection unit during pressurization by the pump unit, the pump unit is depressurized. The balloon control apparatus of the double balloon type endoscope as described. A balloon-type endoscope in which a first balloon is attached to the distal end of the endoscope and air can be supplied to and sucked from the first balloon; and an overtube into which an insertion portion of the balloon-type endoscope is inserted In the balloon control device of the double balloon type endoscope, the second balloon is attached to the distal end of the tube, and an overtube capable of supplying and sucking air to the second balloon is provided.
A first tube and a second tube respectively connected to the balloon-type endoscope and the balloon air inlet of the overtube;
Pump means for separately supplying and sucking air to the first and second balloons via the first and second tubes,
Operating means for separately instructing the pressurization / decompression of the first balloon and the second balloon;
A first pressure sensor and a second pressure sensor for detecting pressures in the first tube and the second tube, respectively;
A first abnormality detecting means and a second abnormality detecting means for detecting abnormalities such as breakage of the first and second balloons, abnormal pressure and disconnection of the first and second tubes;
Timer means for measuring an elapsed time from an abnormality detection time by the first and second abnormality detection means;
An abnormality notifying means for notifying an abnormality when the abnormality is detected by the first and second abnormality detecting means, and stopping the abnormality notification when a predetermined time is counted by the timer means;
When pressurization or depressurization is instructed by the operation means, the first and second balloons are set to a preset pressurization pressure or negative pressure based on the detected pressures of the first and second pressure sensors. Control means for controlling air supply / suction to the first and second tubes from the pump means;
A balloon control device for a double-balloon endoscope, comprising:   The control means causes the pump means to depressurize when a predetermined time is counted by the timer means after an abnormality is detected by the abnormality detecting means during pressurization by the pump means. The balloon control device for a double balloon endoscope according to claim 3. A balloon-type endoscope in which a first balloon is attached to the distal end of the endoscope and air can be supplied to and sucked from the first balloon; and an overtube into which an insertion portion of the balloon-type endoscope is inserted In the balloon control device of the double balloon type endoscope, the second balloon is attached to the distal end of the tube, and an overtube capable of supplying and sucking air to the second balloon is provided.
A first tube and a second tube respectively connected to the balloon-type endoscope and the balloon air inlet of the overtube;
Pump means for separately supplying and sucking air to the first and second balloons via the first and second tubes,
First operating means for separately instructing pressurization / depressurization for the first balloon and the second balloon;
Second operating means for separately instructing to stop pressurization / decompression for the first balloon and the second balloon;
A first pressure sensor and a second pressure sensor for detecting pressures in the first tube and the second tube, respectively;
A first abnormality detecting means and a second abnormality detecting means for detecting abnormalities such as breakage of the first and second balloons, abnormal pressure and disconnection of the first and second tubes;
An abnormality notifying means for notifying an abnormality when an abnormality is detected by the first and second abnormality detecting means;
When pressurization or depressurization is instructed by the first operating means, the first and second balloons are set to a preset pressure or negative pressure based on the detected pressures of the first and second pressure sensors. The air supply / suction from the pump means to the first and second tubes is controlled so that the current pressure is maintained when stoppage of pressurization or decompression is instructed by the second operation means. Control means for temporarily stopping pressurization / decompression by the pump means,
A balloon control device for a double-balloon endoscope, comprising:   The first and second abnormality detecting means detect a predetermined abnormal pressure higher than a pressurizing force preset by the first and second pressure sensors during pressurization by the pump means, and detect the abnormal pressure. The balloon control device for a double balloon endoscope according to any one of claims 1 to 5, wherein an abnormality is detected when the detection continues for a predetermined time. The balloon control device for a double balloon endoscope according to any one of claims 1 to 6, wherein the first tube and the second tube have different tube colors or patterns .

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