WO2017026138A1 - 内視鏡リプロセッサおよび故障検知方法 - Google Patents
内視鏡リプロセッサおよび故障検知方法 Download PDFInfo
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- WO2017026138A1 WO2017026138A1 PCT/JP2016/060419 JP2016060419W WO2017026138A1 WO 2017026138 A1 WO2017026138 A1 WO 2017026138A1 JP 2016060419 W JP2016060419 W JP 2016060419W WO 2017026138 A1 WO2017026138 A1 WO 2017026138A1
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- valve
- fluid supply
- pressure
- connector
- fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
- A61B1/121—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use
- A61B1/123—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use using washing machines
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00057—Operational features of endoscopes provided with means for testing or calibration
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
- A61B1/121—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use
- A61B1/125—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning post-use using fluid circuits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
Definitions
- the present invention relates to an endoscope reprocessor including a plurality of connectors in a processing tank and a failure detection method.
- Endoscopes used in the medical field are subjected to regeneration processing using fluids such as cleaning and disinfection after use.
- An endoscope reprocessor that automatically performs endoscope reproduction processing is also known.
- the endoscope reprocessor includes a processing tank in which an endoscope is disposed and a connector provided in a processing tank connected to the inside of a pipe line of the endoscope.
- the endoscope processing apparatus sends a fluid, which is a gas or a liquid used for a regeneration process, into the endoscope via a connector.
- Japanese Patent No. 5642907 discloses an endoscope reprocessor including a plurality of connectors.
- An endoscope reprocessor including a plurality of connectors includes a plurality of valves for controlling the fluid delivered from the individual connectors to the endoscope.
- each valve can be detected for failure.
- An object of the present invention is to provide an endoscope reprocessor and a failure detection method capable of detecting the presence or absence of a failure of a plurality of valves that control discharge of fluid from a plurality of connectors.
- An endoscope reprocessor includes a fluid supply unit that supplies a fluid, a fluid supply line that communicates with the fluid supply unit and has an opening that is open to the atmosphere, and the fluid supply unit.
- a first valve disposed in a pipeline, a second valve disposed on the opening side of the fluid supply pipeline, the treatment tank in which an endoscope is disposed, and the treatment tank
- a first connector provided on the processing tank; a second connector provided on the processing tank; and the fluid supply pipe line connected between the first valve and the fluid supply unit and connected to the first connector.
- a failure detection method is a valve failure detection method by the endoscope reprocessor, and the fluid supply is performed in a state where a control signal for opening the first valve and the second valve is output.
- the fluid is supplied to the fluid supply pipe from the section, and the pressure sensor measures the pressure between the first valve and the fluid supply section of the fluid supply pipe or the pressure of the first pipe.
- the pressure obtained by the measurement is compared with the first reference value, and the presence or absence of the failure of the first valve or the second valve is determined from the comparison result.
- a failure detection method is a valve failure detection method by the endoscope reprocessor, and the fluid supply is performed in a state where a control signal for opening the first valve and the second valve is output.
- the fluid is supplied to the fluid supply pipe from the section, and the pressure sensor detects the first pressure of the first pipe between the first valve of the fluid supply pipe and the fluid supply section.
- a fluid is supplied from the fluid supply unit to the fluid supply line in a state in which a measurement signal is output and a control signal for opening the first valve and closing the second valve is output, and the pressure sensor
- the second pressure of the first conduit is measured between the first valve and the fluid supply unit of the fluid supply conduit, and the pressure obtained by the measurement of the first pressure and the
- the differential pressure of the pressure obtained by measuring the second pressure and the second reference value Makes a comparison, the result of the comparison, it is determined whether the failure of the first valve or the second valve.
- An endoscope reprocessor 1 shown in FIG. 1 is a device that performs a reproduction process on an endoscope.
- the regeneration treatment here is not particularly limited, and is a rinsing treatment with water, a washing treatment for removing dirt such as organic matter, a disinfection treatment for invalidating predetermined microorganisms, a sterilization treatment for eliminating or killing all microorganisms, Or any combination thereof may be used.
- upper refers to a position that is further away from the ground relative to the comparison target
- lower refers to a position that is closer to the ground relative to the comparison target.
- the height in the following description shall show the height relationship along the gravity direction.
- the endoscope reprocessor 1 includes the control unit 5, the power supply unit 6, the treatment tank 2, the fluid supply unit 31, the fluid supply line 60, the first valve 61, the second valve 62, 1 connector 63, 2nd connector 64, and pressure sensor 67 are provided.
- the control unit 5 can be configured to include an arithmetic device (CPU), a storage device (RAM), an auxiliary storage device, an input / output device, a power control device, and the like, and each part constituting the endoscope reprocessor 1 The operation is controlled based on a predetermined program. The operation of each component included in the endoscope reprocessor 1 in the following description is controlled by the control unit 5 even when not specifically described.
- CPU arithmetic device
- RAM storage device
- auxiliary storage device an input / output device
- power control device and the like
- the power supply unit 6 supplies power to each part of the endoscope reprocessor 1.
- the power supply unit 6 distributes electric power obtained from the outside such as a commercial power supply to each part.
- the power supply unit 6 may include a power generation device or a battery.
- the endoscope reprocessor 1 includes an operation unit 7 and an output unit 8 that constitute a user interface that exchanges information with a user.
- the operation unit 7 and the output unit 8 are electrically connected to the control unit 5.
- the operation unit 7 includes operation members such as a push switch and a touch sensor.
- the output unit 8 includes, for example, a display device that displays images and characters, a light emitting device that emits light, a speaker that emits sound, or a combination thereof.
- the operation unit 7 and the output unit 8 may be provided in an electronic device that performs wireless communication with the control unit 5.
- the treatment tank 2 has a concave shape having an opening, and can store liquid therein.
- An endoscope (not shown) can be disposed in the processing tank 2.
- a lid 3 that opens and closes the opening of the processing tank 2 is provided at the top of the processing tank 2. When the endoscope is subjected to a regeneration process in the processing tank 2, the opening of the processing tank 2 is closed by the lid 3.
- the lid 3 is provided with a vent 3a, and the inside of the treatment tank 2 is open to the atmospheric pressure even when the lid 3 is closed. Note that a filter may be provided in the vent 3a.
- the treatment tank 2 is provided with a disinfecting liquid nozzle 12, a cleaning liquid nozzle 15, a drain port 11, a circulation port 13, a circulation nozzle 14, a first connector 63, and a second connector 64.
- the disinfecting liquid nozzle 12 is an opening that communicates with the disinfecting liquid storage section 20 via the disinfecting liquid conduit 26.
- the disinfecting liquid storage unit 20 stores a disinfecting liquid.
- the disinfecting liquid pipe 26 is provided with a disinfecting liquid pump 27. By operating the disinfecting liquid pump 27, the disinfecting liquid in the disinfecting liquid storage unit 20 is transferred into the treatment tank 2 via the disinfecting liquid conduit 26 and the disinfecting liquid nozzle 12.
- the type of the disinfecting liquid stored in the disinfecting liquid storage unit 20 is not particularly limited, but in the present embodiment, as an example, the disinfecting liquid is peracetic acid.
- the disinfecting solution is obtained by diluting the stock solution of the disinfecting solution supplied from the bottle 18 with water at a predetermined ratio.
- the disinfecting liquid storage unit 20 of the present embodiment introduces a stock solution of the disinfecting liquid supplied from the bottle 18 into the disinfecting liquid storage unit 20 and introduces dilution water into the disinfecting liquid storage unit 20.
- the stock solution of the disinfecting solution is introduced into the disinfecting solution storage unit 20.
- a configuration for introducing water from the dilution pipe 48 into the disinfectant storage part 20 will be described later.
- the endoscope reprocessor 1 does not have to have a configuration in which the disinfectant is diluted with water or the like.
- the bottle connecting portion 19 can be connected to a plurality of bottles 18.
- the disinfectant can be reused when the concentration is within a predetermined range having medicinal properties.
- the disinfectant storage unit 20 also serves as a disinfectant recovery unit that recovers and stores the disinfectant transferred from the disinfectant storage 20 to the treatment tank 2.
- a drainage unit 28 is disposed in the disinfectant storage unit 20.
- the drainage unit 28 discharges a liquid such as a disinfectant solution or water from the disinfectant solution storage unit 20.
- the drainage unit 28 may be configured to discharge liquid from the disinfecting solution storage unit 20 by gravity, or may be configured to forcibly discharge liquid from the disinfecting solution storage unit 20 by a pump.
- the drainage unit 28 includes a drain line 28a that communicates with a drainage port 20a provided at or near the bottom surface of the disinfecting liquid storage unit 20, and a drain valve 28b that opens and closes the drain line 28a. And including.
- the drain valve 28b may be an electromagnetic opening / closing valve whose opening / closing is controlled by the controller 5, or a cock that is opened / closed by a user's manual operation.
- emits the liquid from the disinfection liquid storage part 20 is not restricted only to a drain pipe line.
- the endoscope reprocessor 1 may not include the drainage unit 28 shown in FIG.
- the cleaning liquid nozzle 15 is an opening communicating with the cleaning liquid tank 50 for storing the cleaning liquid through the cleaning liquid pipe 51.
- the cleaning liquid is used for the cleaning process.
- a cleaning liquid pump 52 is provided in the cleaning liquid pipe 51. By operating the cleaning liquid pump 52, the cleaning liquid in the cleaning liquid tank 50 is transferred into the processing tank 2.
- the drainage port 11 is an opening provided at the lowest position in the treatment tank 2.
- the drainage port 11 is connected to the discharge pipe 21.
- the drain line 21 communicates the drain port 11 and the switching valve 22.
- a recovery conduit 23 and a waste conduit 25 are connected to the switching valve 22.
- the switching valve 22 can be switched to a state in which the discharge conduit 21 is closed, a state in which the discharge conduit 21 and the recovery conduit 23 are in communication, or a state in which the discharge conduit 21 and the waste conduit 25 are in communication. .
- the recovery pipeline 23 communicates the disinfectant solution reservoir 20 and the switching valve 22. Further, a discharge pump 24 is provided in the waste pipe 25. The waste line 25 is connected to a drainage facility for receiving the liquid discharged from the endoscope reprocessor 1.
- the liquid can be stored in the treatment tank 2.
- the disinfecting liquid is stored in the processing tank 2 and the switching valve 22 is in a state where the discharge pipe 21 and the recovery pipe 23 communicate with each other, the disinfecting liquid is transferred from the processing tank 2 to the disinfecting liquid storage unit 20. It is transferred to.
- the switching valve 22 is in a state where the discharge pipe 21 and the waste pipe 25 are communicated and the operation of the discharge pump 24 is started, the liquid in the processing tank 2 is drained via the waste pipe 25. Is sent out.
- drain port 11 is provided with an opening 60a which is an opening of a fluid supply pipe 60 which will be described later.
- the circulation port 13 is an opening provided near the bottom surface of the processing tank 2.
- the circulation port 13 communicates with the circulation conduit 13a.
- the circulation line 13a is branched into two lines, that is, a treatment tank circulation line 40 and an endoscope circulation line 30 of a fluid supply unit 31 described later.
- the treatment tank circulation line 40 communicates the circulation line 13a and the circulation nozzle 14 with each other.
- the circulation nozzle 14 is an opening provided in the processing tank 2.
- the treatment tank circulation pipe 40 is provided with a fluid pump 41.
- a three-way valve 42 is provided between the flowing liquid pump 41 and the circulation nozzle 14 in the treatment tank circulation line 40.
- a water supply pipeline 43 is connected to the three-way valve 42.
- the three-way valve 42 can be switched to a state where the circulation nozzle 14 and the treatment tank circulation line 40 are communicated with each other or a state where the circulation nozzle 14 and the water supply line 43 are communicated.
- the water supply pipe 43 communicates the three-way valve 42 and the water supply source connection 46.
- the water supply pipe 43 is provided with a water introduction valve 45 for opening and closing the water supply pipe 43 and a water filter 44 for filtering water.
- the water supply source connection unit 46 is connected to a water supply source 49 such as a water supply facility that sends out water through, for example, a hose.
- a dilution valve 47 is provided in a section of the water supply pipe 43 between the water filter 44 and the three-way valve 42.
- a dilution conduit 48 that connects the dilution valve 47 and the disinfectant storage part 20 is connected to the dilution valve 47.
- the dilution valve 47 can be switched between a state in which the water filter 44 and the three-way valve 42 are in communication with each other, or a state in which the water filter 44 and the dilution pipe 48 are in communication with each other.
- the three-way valve 42 When liquid is stored in the treatment tank 2, the three-way valve 42 is in a state where the circulation nozzle 14 and the treatment tank circulation pipe 40 are in communication, and the dilution valve 47 is in communication with the water filter 44 and the three-way valve 42. If the operation of the fluid pump 41 is started as a state, the liquid in the treatment tank 2 is discharged from the circulation nozzle 14 via the circulation port 13, the circulation line 13 a and the treatment tank circulation line 40.
- the dilution valve 47 is in a state in which the water filter 44 and the three-way valve 42 are in communication, and the water introduction valve 45 is opened.
- the water supplied from the water supply source 49 is discharged from the circulation nozzle 14.
- the liquid discharged from the circulation nozzle 14 is introduced into the processing tank 2.
- the dilution valve 47 when the dilution valve 47 is in a state where the water filter 44 and the dilution pipe line 48 are communicated and the water introduction valve 45 is opened, the water supplied from the water supply source 49 is introduced into the disinfectant solution storage unit 20. Is done.
- the endoscope circulation conduit 30 is included in the fluid supply unit 31.
- the fluid supply unit 31 communicates with a fluid supply pipe 60 described later, and supplies fluid to the fluid supply pipe 60.
- the fluid supply unit 31 is electrically connected to the control unit 5, and supplies a fluid to the fluid supply line 60 in accordance with an instruction from the control unit 5.
- the fluid delivered by the fluid supply unit 31 is not particularly limited, and may be a gas or a liquid.
- the fluid supply unit 31 may send out a gas-liquid two-phase fluid in which a liquid and a gas are mixed.
- the fluid supply unit 31 includes a pump 33, an air pump 35, an alcohol pump 39, and a channel block 32.
- the pump 33 is provided in the endoscope circulation conduit 30.
- the endoscope circulation pipeline 30 communicates the circulation pipeline 13a and the channel block 32 described above.
- the pump 33 operates to transfer the fluid in the endoscope circulation conduit 30 toward the channel block 32.
- the pump 33 is electrically connected to the control unit 5, and the operation of the pump 33 is controlled by the control unit 5.
- the air pump 35 is provided in the intake pipe 34.
- One end of the intake pipe 34 is open to the atmosphere, and the other end communicates with the channel block 32.
- a filter for filtering the passing gas is provided at one end of the intake pipe 34.
- the air pump 35 operates to transfer the fluid in the intake pipe 34 toward the channel block 32.
- the air pump 35 is electrically connected to the control unit 5, and the operation of the air pump 35 is controlled by the control unit 5.
- the alcohol pump 39 is provided in the alcohol conduit 38.
- the alcohol pipe line 38 communicates an alcohol tank 37 that stores alcohol and the channel block 32. Examples of the alcohol stored in the alcohol tank 37 include ethanol. About alcohol concentration, it can select suitably.
- the alcohol pump 39 operates to transfer the alcohol in the alcohol tank 37 toward the channel block 32.
- the alcohol pump 39 is electrically connected to the control unit 5, and the operation of the alcohol pump 39 is controlled by the control unit 5.
- the channel block 32 communicates with the fluid supply line 60 in addition to the endoscope circulation line 30, the intake line 34, and the alcohol line 38 described above.
- the channel block 32 sends the fluid fed from the endoscope circulation conduit 30, the intake conduit 34 and the alcohol conduit 38 to the fluid supply conduit 60.
- the liquid in the processing tank 2 is supplied to the circulation port 13, the circulation line 13 a, the endoscope circulation line 30, and It is fed into the fluid supply line 60 via the channel block 32.
- the air pump 35 when the operation of the air pump 35 is started, air is sent to the fluid supply line 60 via the intake line 34 and the channel block 32. Further, for example, when the operation of the alcohol pump 39 is started, the alcohol in the alcohol tank 37 is fed into the fluid supply line 60 via the alcohol line 38 and the channel block 32.
- the fluid supply unit 31 communicates with the fluid supply line 60 and has a configuration for supplying fluid to the fluid supply line 60.
- the fluid supply line 60 has an open opening 60a.
- the opening 60 a opens in the drainage port 11 of the treatment tank 2.
- the opening 60a is open to atmospheric pressure.
- the opening 60a may be arrange
- FIG. Moreover, the place where the opening 60a is arranged is not limited to the processing tank 2, and the opening 60a may be arranged in a container that captures the fluid discharged from the opening 60a.
- FIG. 2 is a diagram showing an extracted configuration connected to the fluid supply line 60 of the endoscope reprocessor 1.
- a first valve 61 and a second valve 62 are arranged in the fluid supply pipe 60.
- the first valve 61 and the second valve 62 are electrically connected to the control unit 5, and open and close the fluid supply line 60 in accordance with instructions from the control unit 5.
- the second valve 62 is disposed closer to the opening 60a than the position where the first valve 61 of the fluid supply pipe 60 is disposed. In other words, the second valve 62 is disposed between the position where the first valve 61 is disposed and the opening 60a in the fluid supply pipe 60.
- a first pipeline 65 and a second pipeline 66 are connected to the fluid supply pipeline 60.
- the first pipe 65 is connected between the first valve 61 and the fluid supply unit 31 of the fluid supply pipe 60.
- the first pipe 65 is connected to a first connector 63 provided in the processing tank 2. That is, the first pipe line 65 communicates the section of the fluid supply pipe line 60 between the first valve 61 and the fluid supply unit 31 and the first connector 63.
- the second conduit 66 is connected between the first valve 61 and the second valve 62 of the fluid supply conduit 60.
- the second pipeline 66 is connected to a second connector 64 provided in the processing tank 2. That is, the second pipeline 66 communicates the section of the fluid supply pipeline 60 between the first valve 61 and the second valve 62 and the second connector 64.
- a pressure sensor 67 is disposed between the first valve 61 and the fluid supply unit 31 of the fluid supply pipeline 60 or in the first pipeline 65.
- the pressure sensor 67 measures the pressure in the section between the first valve 61 and the fluid supply unit 31 of the fluid supply line 60.
- the pressure sensor 67 is electrically connected to the control unit 5, and the measurement result of the pressure sensor 67 is input to the control unit 5.
- the pressure sensor 67 may be provided in the channel block 32 of the fluid supply unit 31. Even if the pressure sensor 67 is provided in the channel block 32, the pressure sensor 67 can measure the pressure in the section between the first valve 61 of the fluid supply pipe 60 and the fluid supply unit 31.
- the first connector 63 and the second connector 64 are connected to the inside of an endoscope pipe or the like disposed in the processing tank 2 via a connector (not shown).
- the first connector 63 and the second connector 64 are in an open state when the connection tool is connected, and communicates the connection tool with the first pipe line 65 and the second pipe line 66.
- the first connector 63 and the second connector 64 are in a closed state when the connection tool is not connected, and close the first pipeline 65 and the second pipeline 66, respectively.
- the pressure in the section between the first valve 61 of the fluid supply line 60 and the fluid supply part 31 is a predetermined pressure Pmax.
- a relief valve 68 may be provided so as not to exceed.
- the endoscope reprocessor 1 of the present embodiment configured as described above, when the connector is connected to the first connector 63 and the second connector 64 and the first connector 63 and the second connector 64 are in an open state. If the first valve 61 is closed, the fluid supplied from the fluid supply unit 31 to the fluid supply pipe 60 can be discharged from the first connector 63.
- the fluid supplied from the fluid supply unit 31 is first. It is possible to discharge from both the connector 63 and the second connector 64. If both the first valve 61 and the second valve 62 are opened when the first connector 63 and the second connector 64 are open, the fluid supplied from the fluid supply unit 31 is transferred to the first connector. Since the fluid is discharged from the opening 60a in addition to 63 and the second connector 64, the pressure of the fluid discharged from the first connector 63 and the second connector 64 can be reduced.
- the endoscope reprocessor 1 of the present embodiment can change the state of fluid discharge from the first connector 63 and the second connector 64 provided in the processing tank 2.
- the fluid discharged from the 1st connector 63 or the 2nd connector 64 is the fluid supplied from the fluid supply part 31, and in this embodiment, as mentioned above, the liquid stored in the processing tank 2, Air or alcohol.
- the endoscope reprocessor 1 of the present embodiment when both the first valve 61 and the first connector 63 are closed, all of the second valve 62, the first connector 63, and the second connector 64 are closed. In some cases, or when all of the first valve 61, the second valve 62, the first connector 63, and the second connector 64 are closed as shown in FIG. 3, the fluid is supplied from the fluid supply unit 31.
- the pressure measured by the pressure sensor 67 is Pmax. That is, when the fluid is supplied from the fluid supply unit 31 but the fluid is not discharged from any of the opening 60a, the first connector 63, and the second connector 64, the pressure measured by the pressure sensor 67 is Pmax. Become.
- the first valve 61 and the second valve 62 are opened, and fluid is supplied from the fluid supply unit 31 to the fluid supply pipe.
- the pressure measured by the pressure sensor 67 is Pmin. That is, when the fluid supplied from the fluid supply unit 31 is discharged from all of the opening 60a, the first connector 63, and the second connector 64, the pressure measured by the pressure sensor 67 is Pmin. The value of the pressure Pmin is lower than the pressure Pmax.
- the first valve 61 and the second valve 62 are opened, and fluid is supplied from the fluid supply unit 31 to the fluid supply pipe.
- the pressure measured by the pressure sensor 67 becomes the predetermined first pressure PA. That is, when the fluid supplied by the fluid supply unit 31 is discharged from only the opening 60a, the pressure measured by the pressure sensor 67 is the first pressure PA.
- the value of the first pressure PA is lower than the pressure Pmax and higher than the pressure Pmin. That is, Pmax> PA> Pmin.
- the first valve 61 is in the open state and the second valve 62 is in the closed state, and fluid is supplied from the fluid supply unit 31.
- the pressure measured by the pressure sensor 67 becomes the predetermined second pressure PB. That is, when the fluid supplied from the fluid supply unit 31 is discharged from the first connector 63 and the second connector 64, the pressure measured by the pressure sensor 67 becomes the second pressure PB.
- the value of the second pressure PB is lower than the pressure Pmax and higher than the first pressure PA. That is, Pmax> PB> PA> Pmin.
- the flow path extends from the fluid supply section 31 to both the first connector 63 and the second connector 64. Is larger than the pressure loss ⁇ P1 of the flow path from the fluid supply unit 31 to the opening 60a of the fluid supply pipe 60.
- the value of the first pressure PA and the value of the second pressure PB are measured, for example, when the endoscope reprocessor 1 is assembled, and are stored in the nonvolatile storage unit of the control unit 5. Note that the value of the first pressure PA and the value of the second pressure PB may be fixed values determined by design.
- FIG. 7 is a flowchart of the failure detection operation.
- the failure detection operation is executed, for example, when the endoscope reprocessor 1 is turned on or when the reproduction processing operation is started.
- the state in which the first valve 61 and the second valve 62 are in a failure state in which the first valve 61 and the second valve 62 are kept open regardless of the control signal output by the control unit 5 is referred to as an open stuck state.
- a state in which a failure that continues to maintain the closed state regardless of the control signal output by the device is referred to as a closed adhering state.
- the control part 5 is a state which switches an open state and a obstruction
- Each of the first valve 61 and the second valve 62 is in one of a normal state, an open fixed state, and a closed fixed state.
- control signals output from the control unit 5 to the first valve 61 and the second valve 62 are two types, that is, an opening command for setting the opening state and a closing command for setting the blocking state.
- the opening command and the closing command are names given for explanation, and their forms are not particularly limited.
- the control unit 5 refers to the first valve 61 and the second valve 62.
- the closing command is that the control unit 5 stops energization of the first valve 61 and the second valve 62.
- FIG. 8 shows the types of control signals output from the control unit 5 to the first valve 61 and the second valve 62, and in the normal case where the first valve 61 and the second valve 62 operate according to the control signals.
- the range of the pressure value P expected to be measured by the pressure sensor 67 when the fluid is supplied from the fluid supply unit 31 is shown.
- the pressure P measured by the pressure sensor 67 is the first as described above. Expected to be below pressure PA. In this case, the pressure P to be measured is not the first pressure PA but the first pressure PA or lower because at least one of the first connector 63 and the second connector 64 is connected to the connector. It is because the case where it is in an open state is included.
- the pressure P measured by the pressure sensor 67 as described above. Is expected to be greater than or equal to the second pressure PB.
- the measured pressure P is not the second pressure PB but the second pressure PB or higher because at least one of the first connector 63 and the second connector 64 is connected to the connector. This is because there is a case where it is not in the closed state.
- the pressure P measured by the pressure sensor 67 is the second pressure. Expected to exceed PB.
- FIG. 8 shows a combination of the value of the pressure P when the fluid is supplied from the fluid supply unit 31 and the switching of the control signal output from the control unit 5 in the state of I to IX.
- the value of the pressure P is naturally within the range of values expected in the normal state.
- the value of the measured pressure P is equal to or lower than the first pressure PA, and is within the range of values expected during normal operation.
- the first valve 61 is in the state according to the control signal, but the second valve 62 is Open state against the control signal. Therefore, in this case, the value of the measured pressure P is equal to or lower than the first pressure PA, and deviates from the range of values expected at normal time. As in this case, when the value of the measured pressure P deviates from the range of values expected at normal time, it is determined that one of the first valve 61 and the second valve 62 is in a failure state. Can do.
- the first valve 61 and the second valve 62 are in a state according to the control signal.
- the value of the measured pressure P exceeds the second pressure PA and falls within the range of values expected during normal operation.
- the measured pressure P value is in a range of values expected in a normal state for all of the states II to IX in which at least one of the first valve 61 and the second valve 62 is in a failure state. There are conditions for combinations of control signals that will deviate from.
- the failure detection operation of the endoscope reprocessor 1 is roughly performed by supplying fluid from the fluid supply unit 31 while switching control signals output from the control unit 5 to the first valve 61 and the second valve 62.
- the pressure P is measured by the pressure sensor 67 in the section between the first valve 61 of the fluid supply pipe 60 and the fluid supply unit 31. And as shown in FIG. 8, when the value of the measured pressure P has deviated from the range of values expected at normal time, either or both of the first valve 61 and the second valve 62 are It is determined that there is a failure state.
- step S110 of FIG. 7 supply of fluid to the fluid supply line 60 by the fluid supply unit 31 is started.
- step S ⁇ b> 120 an opening command control signal is output to both the first valve 61 and the second valve 62.
- step S130 the pressure sensor 67 measures the pressure P in the section between the first valve 61 of the fluid supply line 60 and the fluid supply unit 31.
- step S140 it is determined whether or not the value of the pressure P is equal to or higher than the second pressure PB stored in advance.
- step S140 when it is determined in step S140 that the value of the measured pressure P is greater than or equal to the second pressure PB, the process proceeds to step S220, and at least one of the first valve 61 and the second valve 62 is in a failure state. Judge that there is.
- step S140 If it is determined in step S140 that the measured pressure P is less than the second pressure PB, the process proceeds to step S150.
- step S150 an opening command control signal is output to the first valve 61, and a closing command control signal is output to the second valve 62.
- step S ⁇ b> 160 the pressure P in the section between the first valve 61 of the fluid supply pipe 60 and the fluid supply unit 31 is measured by the pressure sensor 67.
- step S170 it is determined whether or not the value of the pressure P is equal to or lower than the first pressure PA stored in advance.
- the opening command is output to the first valve 61 and the closing command is output to the second valve 62, if the value of the pressure P is equal to or lower than the first pressure PA, the first valve 61.
- the second valve 62 is in the state II or the state V.
- step S170 when it is determined in step S170 that the value of the measured pressure P is equal to or lower than the first pressure PA, the process proceeds to step S220, and at least one of the first valve 61 and the second valve 62 is in a failure state. Judge that there is.
- step S170 If it is determined in step S170 that the measured value of pressure P exceeds the first pressure PA, the process proceeds to step S180.
- step S180 the control signal for the closing command is output to the first valve 61, and the control signal for the opening command is output to the second valve 62.
- step S ⁇ b> 190 the pressure P in the section between the first valve 61 of the fluid supply pipe 60 and the fluid supply unit 31 is measured by the pressure sensor 67.
- step S200 it is determined whether or not the value of the pressure P is equal to or lower than the first pressure PA stored in advance.
- step S200 when it is determined in step S200 that the value of the measured pressure P is equal to or lower than the first pressure PA, the process proceeds to step S220, and at least one of the first valve 61 and the second valve 62 is in a failure state. Judge that there is.
- step S170 If it is determined in step S170 that the value of the measured pressure P exceeds the first pressure PA, the process proceeds to step S210, and it is determined that the first valve 61 and the second valve 62 are in a normal state. .
- step S210 or step S220 the process proceeds to step S230, the supply of fluid to the fluid supply line 60 by the fluid supply unit 31 is stopped, and the failure detection operation is terminated.
- the endoscope reprocessor 1 of the present embodiment controls the first valve 61 for controlling the discharge of fluid from the first connector 63 and the second connector 64 provided in the processing tank 2. And the presence or absence of the failure of the 2nd valve 62 is detectable.
- the value of the first pressure PA in the state where the opening 60a of the fluid supply pipe 60 is opened in the processing tank 2 is the value of the second pressure PB in the state where the opening 60a is closed.
- the measurement value P can be accurately compared with the first pressure PA and the second pressure PB.
- FIG. 9 is a flowchart of a failure detection operation according to a modification.
- step S310 of FIG. 9 supply of fluid to the fluid supply line 60 by the fluid supply unit 31 is started.
- step S320 control signals for opening commands are output to both the first valve 61 and the second valve 62.
- step S330 the pressure sensor 67 measures the pressure P in the section between the first valve 61 of the fluid supply line 60 and the fluid supply unit 31.
- step S340 the control signal for opening the first valve 61 is output, and the control signal for closing command is output to the second valve 62.
- step S 350 the pressure sensor 67 measures the pressure in the section between the first valve 61 and the fluid supply unit 31 of the fluid supply line 60. In order to distinguish from the pressure P measured in step S330, the pressure measured in step S350 is referred to as pressure P '.
- step S360 it is determined whether or not the difference between the pressure P and the pressure P 'is equal to or higher than the third pressure PC that is the reference value. If it is determined in step S360 that the difference between the pressure P and the pressure P ′ is equal to or greater than the third pressure PC, the process proceeds to step S370, and the first valve 61 and the second valve 62 are in a normal state. judge.
- step S360 when it is determined in step S360 that the difference between the pressure P and the pressure P ′ is less than the third pressure PC, the process proceeds to step S380, and at least one of the first valve 61 and the second valve 62 is It is determined that there is a failure state.
- step S370 or step S380 the process proceeds to step S390, the supply of fluid to the fluid supply line 60 by the fluid supply unit 31 is stopped, and the failure detection operation is ended.
- an endoscope reprocessor and a failure detection method that can detect the presence or absence of a failure of a plurality of valves that control ejection of fluid from a plurality of connectors.
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Abstract
Description
Claims (4)
- 流体を供給する流体供給部と、
前記流体供給部に連通しており大気開放された開口を有している流体供給管路と、
前記流体供給管路に配置された第1弁と、
前記流体供給管路のうち、前記第1弁よりも前記開口側に配置された第2弁と、
内視鏡を配置する処理槽と、
前記処理槽に設けられた第1コネクタと、
前記処理槽に設けられた第2コネクタと、
前記流体供給管路において、前記第1弁と前記流体供給部との間に接続されて前記第1コネクタに接続される第1管路と、
前記流体供給管路において、前記第1弁と前記第2弁との間に接続されて前記第2コネクタに接続される第2管路と、
前記流体供給部、前記流体供給管路の前記第1弁と前記流体供給部との間、または、前記第1管路に配置された圧力センサと、
を含むことを特徴とする内視鏡リプロセッサ。 - 前記第1コネクタおよび前記第2コネクタを開放状態とし、前記第1弁を開放状態とし、前記第2弁を閉塞状態とした場合の前記流体供給部から前記第1コネクタおよび前記第2コネクタまでの圧力損失は、前記第1弁および前記第2弁を開放状態とした場合の前記流体供給部から前記開口までの圧力損失よりも大きい
ことを特徴とする請求項1に記載の内視鏡リプロセッサ。 - 請求項1に記載の内視鏡リプロセッサによる弁の故障検知方法であり、
前記第1弁および前記第2弁を開放状態とする制御信号を出力した状態で前記流体供給部から前記流体供給管路に流体を供給して、前記圧力センサにより前記流体供給管路の前記第1弁と前記流体供給部との間、または、前記第1管路の圧力の測定を行い、
測定で得られた前記圧力と、第1基準値との比較を行い、
前記比較の結果から、前記第1弁または前記第2弁の故障の有無の判定を行う、
ことを特徴とする故障検知方法。 - 請求項1に記載の内視鏡リプロセッサによる弁の故障検知方法であり、
前記第1弁および前記第2弁を開放状態とする制御信号を出力した状態で前記流体供給部から前記流体供給管路に流体を供給して、前記圧力センサにより前記流体供給管路の前記第1弁と前記流体供給部との間、または、前記第1管路の第1の圧力の測定を行い、
前記第1弁を開放状態とし、前記第2弁を閉塞状態とする制御信号を出力した状態で前記流体供給部から前記流体供給管路に流体を供給して、前記圧力センサにより前記流体供給管路の前記第1弁と前記流体供給部との間、または、前記第1管路の第2の圧力の測定を行い、
前記第1の圧力の測定で得られた圧力及び前記第2の圧力の測定で得られた圧力の差圧と、第2基準値と、の比較を行い、
前記比較の結果から、前記第1弁または前記第2弁の故障の有無の判定を行う、
ことを特徴とする故障検知方法。
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JP2016547131A JP6033515B1 (ja) | 2015-08-11 | 2016-03-30 | 内視鏡リプロセッサおよび故障検知方法 |
CN201680003046.6A CN106793937B (zh) | 2015-08-11 | 2016-03-30 | 内窥镜清洗消毒机和故障探测方法 |
EP16834835.7A EP3175775B1 (en) | 2015-08-11 | 2016-03-30 | Endoscope reprocessor and failure detection method |
US15/449,235 US10165936B2 (en) | 2015-08-11 | 2017-03-03 | Endoscope reprocessor and fault detection method |
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WO2020194725A1 (ja) * | 2019-03-28 | 2020-10-01 | オリンパス株式会社 | 送気装置の制御方法および送気装置 |
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US10165936B2 (en) | 2019-01-01 |
EP3175775B1 (en) | 2018-12-26 |
EP3175775A1 (en) | 2017-06-07 |
US20170172399A1 (en) | 2017-06-22 |
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