WO2016035377A1 - 電極式溶液測定装置、貯留容器、および内視鏡リプロセッサ - Google Patents
電極式溶液測定装置、貯留容器、および内視鏡リプロセッサ Download PDFInfo
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- WO2016035377A1 WO2016035377A1 PCT/JP2015/062111 JP2015062111W WO2016035377A1 WO 2016035377 A1 WO2016035377 A1 WO 2016035377A1 JP 2015062111 W JP2015062111 W JP 2015062111W WO 2016035377 A1 WO2016035377 A1 WO 2016035377A1
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- electrode
- cap
- contact
- liquid
- storage container
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/4163—Systems checking the operation of, or calibrating, the measuring apparatus
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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
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/12—Apparatus for isolating biocidal substances from the environment
- A61L2202/122—Chambers for sterilisation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
Definitions
- the present invention relates to an electrode type solution measuring device, a storage container, and an endoscope reprocessor that can automatically perform calibration before measurement.
- An endoscope in the medical field that is used by being inserted into the body for the purpose of examination and treatment needs to be cleaned and disinfected after use, so the used endoscope is used as an endoscope. It is well known to be performed automatically by a cleaning and disinfecting apparatus.
- the chemical solution for disinfection used in this endoscope cleaning / disinfecting device is stored in the chemical solution tank by diluting the chemical solution in the sealed chemical solution bottle with tap water or the like to be used in the cleaning / disinfecting process. .
- concentration management of the chemical solution in the chemical solution tank is important, and it is necessary to regularly check the concentration of the chemical solution.
- Japanese Patent Application Laid-Open No. 11-64280 discloses a measuring apparatus that can perform highly accurate acid concentration measurement in a short time without measuring the liquid to be measured.
- the present invention has been made in view of the above circumstances, an electrode type solution measuring device, a storage container, which can be automatically calibrated to a measurement state in actual use by simply replacing the electrode unit, And an endoscope reprocessor.
- the electrode type solution measuring apparatus is an electrode type solution measuring apparatus having an electrode unit that can be attached to and detached from a storage container that stores a measurement target liquid to be measured.
- a cylindrical tubular portion that is detachably inserted into the storage container, a cap that releasably closes the distal end portion of the tubular portion by applying stress, a predetermined distance away from the cap, and the cover
- a diaphragm that selectively permeates the measurement liquid, an inner wall of the cylindrical portion, the cap, and a standard liquid chamber that is surrounded by the diaphragm and stores a standard solution for calibration, and so as to contact the diaphragm
- An internal liquid chamber storing an internal liquid of the electrolyte, and spaced apart from the working
- An electrode type solution measuring device is an electrode type solution measuring device having an electrode unit that can be attached to and detached from a storage container that stores a liquid to be measured that is a measurement target.
- a storage container that stores a liquid to be measured that is a measurement target.
- a standard solution chamber storing a standard solution for calibration, a working electrode disposed in the cylindrical portion and exposed in the standard solution chamber so that at least a part thereof is in contact with the standard solution,
- a first electrode pad that is electrically connected to the working electrode and disposed on the surface of the cylindrical portion, and is disposed in the cylindrical portion so as to be separated from the working electrode, at least a part of which is the standard
- the standard so as to come into contact with the liquid Comprising a counter electrode which is exposed to the liquid chamber, it is electrically connected to the counter electrode, a second electrode pads disposed on
- a storage container is the storage container according to the above aspect, and is formed in a container part for storing a chemical solution and a part of the container part, and is a recess for accommodating the electrode unit according to the above aspect.
- a receiving portion having a shape and having an opening on a bottom surface; and being exposed to an inner surface of the receiving portion and electrically contacting the first electrode pad of the electrode unit that has advanced to a first position of the receiving portion.
- a second contact for making electrical contact with the second electrode pad of the electrode unit exposed to the inner surface of the housing portion and having advanced to the first position.
- An endoscope reprocessor includes the storage container according to one aspect.
- the first embodiment of the present invention shows application of an electrode type solution measuring apparatus to concentration measurement for measuring the concentration of a solution.
- an endoscope reprocessor including a chemical tank that is a storage container is applied.
- an example of measuring the concentration of a medical solution used as a measurement target liquid to be measured in an endoscope reprocessor that automatically regenerates a used endoscope or endoscope accessory explain.
- an endoscope reprocessor 1 is connected to an apparatus main body 2 and an upper portion thereof via a hinge (not shown), for example, so as to be openable and closable, and serves as a lid of a processing tank 3 that houses the endoscope.
- a top cover 4 is provided.
- the apparatus main body 2 is a front surface in FIG. 1 when viewed from the front, for example, in the upper portion of the left half, and a chemical tray 11 is disposed so as to be able to be drawn out forward of the apparatus main body 2.
- the chemical liquid tray 12 is disposed so as to be drawn out forward of the apparatus main body 2.
- An operation panel 13 for displaying the cleaning / disinfecting time, heating the chemical, selecting the cleaning / disinfecting mode, and the like is disposed on the front of the apparatus main body 2 and above the chemical tray 12. May be.
- the drug solution tray 11 is a liquid used for drying a detergent tank 11a (see FIG. 2) in which a cleaning agent, which is a liquid used for cleaning the endoscope, and an endoscope after cleaning and disinfection are dried.
- An alcohol tank 11b (see FIG. 2) in which a certain alcohol is stored may be stored. Since the chemical liquid tray 11 can be pulled out, each tank is configured to be replenished with liquid.
- medical solution tray 11 is provided with the indicator 11c, and an operator can confirm the residual amount of the cleaning agent currently inject
- the chemical solution tray 12 stores, for example, a chemical solution bottle 12a (see FIG. 2) into which a liquid used for disinfecting the endoscope is injected.
- the chemical liquid stored in the chemical liquid tray 12 is not limited to the disinfecting liquid, and a cleaning liquid, a rinsing liquid, or a highly volatile liquid for drying an endoscope may be stored.
- the chemical solution include a peracetic acid-containing solution.
- the chemical solution tray 12 may be configured to be freely drawable so that an operator can set and replace the chemical solution bottle 12a with the chemical solution tray 12.
- the chemical liquid tray 12 is provided with a confirmation window 12b, and the operator can confirm the remaining amount of the chemical liquid injected into the chemical liquid bottle 12a through these confirmation windows 12b.
- the front door 14 may be disposed so as to be openable and closable between the central portion and the lower portion of the front surface of the apparatus main body 2 in the drawing. As shown in FIG. 1, for example, the front door 14 can be opened when the operator performs an operation of pressing down a predetermined portion of the front door 14 in a closed state.
- a storage container for storing a liquid to be measured which is a measurement target of concentration measurement in the present embodiment
- the side part side of the chemical tank 70 (see FIG. 2) is exposed.
- An electrode unit 80 for measuring the concentration of the chemical solution in the chemical solution tank 70 is detachably attached to the upper part on the side of the chemical solution tank 70.
- an air filter 46 as an air supply filter is disposed on the front surface in FIG.
- a water supply filter 17 for tap water supplied from the outside is disposed on the air filter 46.
- the endoscope reprocessor 1 has one end of a water supply hose 31 a connected to a water supply hose connection port 31 and the other end of the water supply hose 31 a connected to an external water tap 5.
- tap water is supplied.
- the water supply hose connection port 31 communicates with the water supply pipe line 9 through the water supply electromagnetic valve 15, the check valve 16, and the water supply filter 17.
- the water supply line 9 may be connected to the three-way electromagnetic valve 10 and may be connected to a dilution electromagnetic valve 48 that intermittently supplies dilution water to the chemical tank 70.
- the water supply filter 17 can be configured as a cartridge-type filtration filter so that it can be replaced periodically.
- the water supply filter 17 removes foreign substances, bacteria, or the like passing through the tap water.
- the three-way solenoid valve 10 is connected to one end of the liquid flow pipe 18, and communication between the water supply pipe 9 and the liquid flow pipe 18 with respect to the water supply circulation nozzle 24 disposed in the treatment tank 3 is performed by an internal valve. Switch. That is, the water supply circulation nozzle 24 communicates with either the water supply pipe line 9 or the flowing liquid pipe line 18 by the switching operation of the three-way solenoid valve 10.
- a fluid pump 19 which is a non-self-priming pump excellent in liquid transport capability, capable of transporting only the liquid may be disposed on the other end side of the fluid flow pipe 18.
- a circulation port 56 is disposed on the bottom side of the treatment tank 3, and one end of the circulation pipe 20 is connected to the circulation port 56.
- the other end of the circulation pipe 20 is branched into two so as to communicate with the other end of the flowing liquid pipe 18 and one end of the channel pipe 21.
- the other end of the channel line 21 communicates with each air / water supply / forceps port 33.
- the other end of the channel duct 21 may communicate with a forceps raising port (not shown).
- the channel pipe 21 is provided with a channel pump 26, a channel block 27, and a channel solenoid valve 28 in order from one end side in the middle of the pipe.
- the channel pump 26 may be a self-priming pump that can transfer both liquid and gas at a higher pressure than the non-self-priming pump.
- a detergent nozzle 22 can be disposed in the treatment tank 3.
- One end of a detergent conduit 39 is connected to the detergent nozzle 22.
- the other end of the cleaning agent conduit 39 is connected to the detergent tank 11 a of the chemical liquid tray 11.
- a detergent pump 40 composed of a high-pressure self-priming pump for lifting the detergent from the detergent tank 11 a to the treatment tank 3 is disposed in the detergent conduit 39.
- the alcohol tank 11b can also be arranged on the chemical liquid tray 11.
- the alcohol tank 11b is connected to one end of the alcohol conduit 41, and the alcohol conduit 41 is connected to the channel block 27 so as to communicate with the channel conduit 21 in a predetermined manner.
- an alcohol supply pump 42 composed of a high-pressure self-priming pump and an electromagnetic valve 43 are arranged to lift alcohol from the alcohol tank 11b to the treatment tank 3.
- an air pipe 44 for supplying air from an air pump 45 constituted by a self-priming pump capable of transferring gas is communicated with the channel pipe 21 in a predetermined manner in the channel block 27. It is connected to the.
- the other end of the air pipe 44 is connected to the air pump 45, and a check valve 47 and an air filter 46 that is periodically exchanged are disposed in the middle of the air pipe 44. .
- a drain port 55 is provided in the bottom surface of the treatment tank 3, and a cleaning solution or the like is discharged to the outside or a chemical solution is collected in the chemical solution tank 70 by a valve switching operation below the drain port 55.
- An openable / closable switching valve 57 is provided.
- the switching valve 57 is connected to a drainage hose (not shown) connected to an external drainage port and the other end of a drainage pipe 59 that is connected to and communicates with one end of the drainage hose.
- a drainage pump 60 composed of these pumps is arranged.
- the switching valve 57 is connected to one end of the chemical solution recovery pipeline 61, and the other end of the chemical solution recovery pipeline 61 is connected to the chemical solution tank 70.
- the chemical liquid tank 70 is supplied with, for example, a disinfecting liquid as a chemical liquid from the chemical liquid bottle 12a and diluted to a prescribed concentration, and then used in the disinfecting process.
- a chemical liquid pipe 64 provided with a suction filter 63 at one end is accommodated in a predetermined manner, and the other end of the chemical liquid pipe 64 is disposed in the processing tank 3. 23.
- a chemical liquid pump 65 composed of a high-pressure self-priming pump is disposed in the middle position of the chemical liquid pipe 64 to lift the disinfectant liquid from the chemical liquid tank 70 to the treatment tank 3.
- the chemical solution in the chemical solution tank 70 is diluted based on a detection signal from a water level sensor 66 provided in the chemical solution tank 70.
- the water level sensor 66 is configured to be capable of detecting a plurality of water levels, for example, an initial water level of dilution water supplied into the chemical liquid tank 70, a water level of disinfecting water obtained by diluting a disinfecting chemical liquid with dilution water, and an abnormal water level.
- the detection signal is input to the control unit 150 that controls the operation of the entire endoscope reprocessor 1.
- the control unit 150 first detects that the chemical solution bottle 12a has been removed from the disinfecting chemical solution tray 12 by a signal from a switch or the like (not shown), and when it is detected that the chemical solution bottle 12a has been newly attached, the control unit 150 Opens the dilution electromagnetic valve 48, supplies the dilution water to the chemical tank 70, supplies the dilution water to the chemical tank 70 until the water level reaches a preset level, and prepares a chemical solution with a specified concentration.
- the controller 150 detects that the chemical bottle 12a has been removed from the disinfectant chemical tray 12 by a signal from a switch (not shown) or the like, the controller 150 opens the dilution electromagnetic valve 48 and supplies the diluted water to the chemical tank 70. Then, a preset water level (the lowest detected water level) is supplied as the initial water level.
- the control unit 150 again or directly controls the dilution electromagnetic valve 48. The valve is opened to supply the dilution water to the chemical liquid tank 70, and the dilution water is supplied to the chemical liquid tank 70 until a preset water level higher than the initial water level is prepared to prepare a chemical liquid with a prescribed concentration.
- the concentration of the chemical solution stored in the chemical solution tank 70 is measured using the electrode unit 80.
- the concentration measurement using the electrode unit 80 confirms that the chemical solution in the chemical solution tank 70 has a prescribed concentration
- the chemical solution pump 65 is driven under the control of the control unit 150 so that the chemical solution is contained in the processing tank 3.
- the control unit 150 performs drive control on the above-described pumps, electromagnetic valves, and the like.
- the control unit 150 performs known draining, disinfection, and rinsing through at least the water supply line 9 via the circulation line 20 and the channel line 21. And at least one of the tap water and the chemical solution in the treatment tank 3 is collected in the chemical solution tank 70 through the chemical solution recovery pipeline 61 or drained from the external drainage port through the drainage pipeline 59. There is a water supply line disinfection program to do either.
- the control unit 150 also cleans the entire pipeline disinfection program for disinfecting all the pipelines in the endoscope reprocessor 1 and the endoscope pipeline of the endoscope connected to the port 33 via a tube. An endoscope cleaning and disinfecting program for disinfection is also provided.
- the electrode unit 80 is a diaphragm type electrode having a diaphragm that selectively permeates the medicinal solution that is the liquid to be measured, as a sensor unit for measuring the concentration of the medicinal solution stored in the medicinal solution tank 70. It is configured as a unit. More specifically, the diaphragm can transmit only specific ions or molecules of the liquid to be measured. Since this diaphragm electrode unit needs to be periodically replaced in a predetermined period in order to maintain measurement accuracy, the electrode unit 80 is detachably attached to the chemical solution tank 70.
- the electrode unit 80 includes a flange-shaped set portion 81 that serves as a grip portion for mounting on the chemical liquid tank 70, and a lower portion of the set portion 81, and has an outer peripheral surface as an external connection terminal.
- a lid-like cap 84 that closes the opening on the distal end side of the tubular portion 83 so as to be opened by applying stress.
- the cylindrical portion 83 includes a cylindrical container-shaped cap holding portion 85 that holds the cap 84 on the distal end side, and a sensor portion 86 that is movably mounted on the inner peripheral surface of the cap holding portion 85.
- the sensor part 86 is a part formed integrally with the terminal part 82, while the cap holding part 85 is formed separately from the sensor part 86 and is mounted so as to cover the front end side of the sensor part 86.
- cap holding part 85 and the sensor part 86 do not necessarily need to be configured separately. As will be described later, for example, when stress is applied to the cap 84 from the mounting portion side of the chemical liquid tank 70 to open the cap 84, the sensor unit 86 may not be able to advance and retract relative to the cap holding unit 85.
- the first electrode pad 87 is arranged at a predetermined length in the circumferential direction so as to be in contact with an electrical contact on the chemical liquid tank 70 side within a range of a predetermined rotation angle.
- the partition wall 86 b that forms the bottom surface of the inner cavity of the sensor unit 86 and serves as a boundary with the terminal unit 82 is electrically connected to the second electrode pad 89 disposed on the outer surface of the terminal unit 82 2.
- a rod-shaped counter electrode 90 is erected apart from the working electrode 88, and the tip end side of the counter electrode 90 is exposed in a lumen around the electrode holding portion 96a.
- the second electrode pad 89 is arranged at a predetermined length in the circumferential direction so as to face the first electrode pad 87 so as to be able to come into contact with the electrical contact on the chemical liquid tank 70 side within a range of a predetermined rotation angle.
- the working electrode 88 is covered so that the tip surface thereof is in contact with the diaphragm 91 that transmits the liquid to be measured.
- the diaphragm 91 is formed as a circular film that seals the periphery at the position of the distal end surface of the working electrode 88, and its outer peripheral portion is in close contact with and fixed to a stepped portion provided on the inner wall surface of the sensor portion 86. .
- a region surrounded by the inner wall surface of the sensor portion 86, the outer peripheral surface of the working electrode 88, the partition wall 86b on the bottom surface, and the diaphragm 91 is formed as an internal liquid chamber 62.
- the internal liquid Li is filled so that at least a part thereof is in contact.
- the internal liquid Li is an electrolyte solution for electrically connecting the working electrode 88 and the counter electrode 90.
- the outer peripheral surface of the sensor portion 86 is formed as an advance / retreat portion 86 c that is detachably mounted in the cap holding portion 85, and the distal end side of the advance / retreat portion 56 c is a part of the joint portion between the cap holding portion 85 and the cap 84. It is formed as an opening part 86d for breaking through and opening.
- the open portion 86d is formed to have a sharp blade shape by, for example, cutting the front end side of the advance / retreat portion 86c obliquely with respect to the central axis.
- the area surrounded by the inner wall surface of the sensor part 86 (the inner peripheral surface of the advance / retreat part 86 c), the inner peripheral surface of the cap holding part 85, the diaphragm 91 and the cap 84 is separated from the internal liquid chamber 92 by the diaphragm 91. It is formed as a chamber 93.
- a calibration standard solution Lc is stored in this standard solution chamber 93.
- the standard solution Lc for example, pure water or a liquid to be measured having a specified concentration is used.
- a seal portion 85a is provided on the inner peripheral side of the cap holding portion 85 to hold the space between the forward and backward portion 86c and the outer peripheral surface in a liquid-tight manner.
- the electrode unit 80 When the electrode unit 80 is mounted on the chemical tank 70, the working electrode 88 and the counter electrode 90 are disposed on the side of the chemical tank 70 via the first electrode pad 87 and the second electrode pad 89 provided on the terminal portion 82. It is electrically connected to the electrical contact. At this time, the electrode unit 80 is set at a calibration position for zero point adjustment using the standard solution at the time of initial setting, and then set at a measurement position for actual use after completion of zero point adjustment. For this reason, on the electrode unit 80 side, a fitting portion 94 for positioning at the time of setting is provided below the terminal portion 82.
- the fitting portion 94 is formed in a protruding shape that protrudes in the radial direction, and is provided to face each other at two predetermined positions in the circumferential direction, for example.
- the number of electrodes may be two or more. For example, two points for zero point correction and two points for measurement may be provided separately (in order to increase the accuracy of zero point correction, a certain resistance may be provided on the electrode for zero point correction).
- the electrode unit 80 is inserted into the mounting portion of the chemical tank 70 in two stages, and when the first stage is inserted, the whole is rotated and pushed in, so that the fitting section 94 becomes the chemical tank 70. Fitted to the side and set to the actual measurement state. Therefore, a mark or the like indicating the position of the fitting portion 94 is provided on the top surface of the set portion 81, and for example, a “calibration (zero point adjustment) position”, “measurement position (PUSH)” is provided on the chemical liquid tank 70 side. It is desirable to provide a display indicating the set position such as
- the accommodating portion 71 includes a first accommodating portion 72 on the inlet side and a second accommodating portion 73 formed on the back side from the first accommodating portion 72.
- the 1st accommodating part 72 is a site
- the first contact point 74 and the second contact point 75 are arranged to be urged radially inward, and when the electrode unit 80 is inserted into the accommodating portion 71, the tips of the first and second contact points 74 and 75 are arranged. When the part contacts the first electrode pad 87 and the second electrode pad 89, the electrical connection is established.
- the second accommodating portion 73 is a portion that is formed to have a smaller diameter than the first accommodating portion 72 and accommodates the cylindrical portion 83 of the electrode unit 80, and the front end surface of the cap holding portion 85 of the electrode unit 80 is on the bottom surface side.
- An abutting portion 73a that abuts is provided inside the contact portion 73 a. Inside the contact portion 73 a, a measured liquid inlet 73 b for leading the measured liquid to the electrode unit 80 is opened.
- a measurement set that defines the position at the time of measurement by allowing the fitting portion 94 of the electrode unit 80 to be moved in the axial direction at a step portion forming an annular plane at the boundary between the first accommodation portion 72 and the second accommodation portion 73.
- the part 76 is opened.
- the measurement set portion 76 is provided opposite to each other at two predetermined positions in the circumferential direction corresponding to the two fitting portions 94 of the electrode unit 80, and the inner wall of the second housing portion 73 from the stepped portion. Is opened at a predetermined depth in the axial direction.
- the first and second contacts 74 and 75 are connected to the sensor control unit 100 via signal lines 77a and 77b.
- the sensor control unit 100 is configured on a control board installed in the chemical liquid tank 70, and the first and second electrode pads 87 and 89 of the electrode unit 80 are connected from the first and second contacts 74 and 75 on the chemical liquid tank 70 side.
- a voltage supply unit 101 that supplies a measurement voltage to be applied between the working electrode 88 and the counter electrode 90, a current measuring unit 102 that measures a current flowing between the working electrode 88 and the counter electrode 90, and calibration for zero point adjustment.
- a calibration data holding unit 103 that holds data, and a concentration measurement unit 104 that measures the concentration of the chemical by correcting the measurement data of the current value with the calibration data.
- the sensor control unit 100 When the sensor control unit 100 is set to the calibration position (see FIG. 7) by the first attachment to the chemical tank 70 by replacing the electrode unit 80 or the like, the sensor control unit 100 performs measurement using the standard solution held by the electrode unit 80 itself. Adjust the reference point (zero point) and save the calibration data. Thereafter, when the electrode unit 80 is set at the measurement position (see FIG. 8), the concentration of the chemical solution stored in the chemical solution tank is measured with reference to the zero point adjusted by the stored calibration data. The concentration measurement result of the chemical solution by the sensor control unit 100 is transmitted to the control unit 150. The controller 150 diagnoses whether there is an abnormality based on the concentration measurement data of the chemical solution.
- This zero point adjustment process is a process executed by the sensor control unit 100 in the present embodiment.
- the first step S1 it is confirmed whether or not the electrode unit 80 is set at the first calibration position.
- the calibration position of the electrode unit 80 is such that the electrode unit 80 is inserted into the container 71 of the chemical tank 70 and proceeds to the first position of the first stage, and the first and second contacts 74, In this state, the electrical connection between the first electrode pad 87 and the second electrode pad 75 is established.
- the electrode unit 80 is inserted at a rotational position such that the fitting portion 94 does not interfere with the first and second contacts 74 and 75, and the step portion at the boundary between the first housing portion 72 and the second housing portion 73.
- the cylindrical portion 83 is housed in the second housing portion 73 while the tip of the tubular portion 83 is closed by the cap 84.
- Whether or not the electrode unit 80 is set to the initial calibration position is determined by using, for example, an optical or magnetic non-contact sensor, or a position detection sensor constituted by a contact type limit switch. This can be confirmed by detecting the position in the axial direction. It is also possible to check whether or not the electrode unit 80 has been set to the initial calibration position by monitoring the presence / absence of power supply between the first contact 74 and the second contact 75 on the chemical liquid tank 70 side and the history. Is possible.
- the sensor control unit 100 supplies a voltage for measurement (adjustment) from the voltage supply unit 101, and the first and second contacts 74, A voltage is applied between the working electrode 88 and the counter electrode 90 from 75 through the first and second electrode pads 87 and 89 (step S2).
- ions of the calibration standard solution Lc stored in the standard solution chamber 93 pass through the diaphragm 91, and a minute current flows between the working electrode 88 and the counter electrode 90.
- the current flowing between the working electrode 88 and the counter electrode 90 is measured by the current measuring unit 102 (step S3).
- the concentration measuring unit 104 adjusts the reference value (zero point) of concentration measurement with the measured current based on the concentration of the standard solution Lc that is an existing value in advance (step S4). Then, the zero point correction value measured by the electrode unit 80 is checked at the adjusted zero point, and it is checked whether or not the zero point correction value is within the specified range (step S5).
- control unit 150 receives the error signal indicating the occurrence of an abnormality, notifies the occurrence of the abnormality by displaying on the operation panel 13 or outputting a sound, and prompts replacement with a new electrode unit 80.
- the old data stored in the calibration data holding unit 103 is updated with the current calibration data of the zero point adjustment (step S6), and the electrode unit 80 A signal for instructing setting to the measurement position is transmitted to the control unit 150 (step S7).
- the control unit 150 guides the operator to set the electrode unit 80 at the measurement position by display on the operation panel 13 or sound output.
- the electrode unit 80 is set to the measurement position when the electrode unit 80 is advanced from the first position of the first stage of the container 71 of the chemical tank 70 to the second position of the second stage, that is, the first stage.
- the electrode unit 80 is rotated at the insertion position (calibration position), the fitting portion 94 is made to coincide with the measurement setting portion 76 of the chemical liquid tank 70, and the electrode unit 80 is pushed in the direction toward the inside of the chemical liquid tank 70 in this state. Is done.
- the cylindrical portion 83 accommodated in the second accommodating portion 73 has a cap surface with the tip end surface of the cap holding portion 85 abutting against the abutting portion 73 a at the tip of the second accommodating portion 73.
- the movement of the holding part 85 is restricted, and the sensor part 86 (advance / retreat part 86c) moves relative to the cap holding part 85.
- the opening 86 d at the tip of the advancing / retreating portion 86 c breaks through a part of the joint portion between the cap holding portion 85 and the cap 84 to open the cap 84.
- the cap 84 may be opened on the chemical tank 70 side.
- the cap 84 can be opened by providing a portion having the same shape as the opening 86d on the bottom surface side of the second housing 73 in the reverse direction and abutting the cap 84.
- the standard solution Lc in the standard solution chamber 93 is discharged, the standard solution chamber 93 is filled with the chemical solution Lq in the chemical solution tank 70, and preparation for concentration measurement using the chemical solution Lq as the solution to be measured is completed.
- the concentration measurement is basically the same as the calibration with the standard solution Lc, and the voltage for measurement is supplied from the voltage supply unit 101, and the first and second contact pads 74 and 75 are used for the first and second electrode pads 87 and 89.
- a voltage is applied between the working electrode 88 and the counter electrode 90 via the electrode, ions of the chemical solution Lq that have entered the standard solution chamber 93 pass through the diaphragm 91, and a current flows between the working electrode 88 and the counter electrode 90. Flows. This current is measured by the current measuring unit 102 and sent to the concentration measuring unit 104.
- the concentration measuring unit 104 adjusts the zero point with the calibration data stored in the calibration data holding unit 103 and then refers to the data table in which the relationship between the concentration and the current value is recorded. calculate.
- the concentration measurement result of the chemical liquid Lq is transmitted from the concentration measurement unit 104 to the control unit 150.
- the chemical liquid here is not limited to the disinfecting liquid as described above, and may be a cleaning liquid, a rinsing liquid, or a highly volatile liquid for drying an endoscope.
- the control unit 150 executes the diagnostic process shown in FIG. 6 based on the concentration measurement result transmitted from the concentration measuring unit 104.
- this diagnosis process the presence or absence of abnormal concentration data due to abnormalities in concentration data due to poor dilution of the chemical solution due to replacement of the chemical solution bottle 12a or abnormalities in each process of cleaning and disinfection is diagnosed.
- the control unit 150 receives the concentration data N of the chemical solution Lq from the sensor control unit 100 (step S11), and determines whether or not the concentration data N is equal to or less than a preset upper limit value NH.
- the upper limit value NH is an allowable concentration at the upper limit when the chemical solution in the chemical solution bottle 12a is supplied into the chemical solution tank 70 and diluted with water. For example, if the concentration of the chemical solution in the chemical solution bottle 12a is 6%, the chemical solution in the chemical solution tank 70 is about 0.3% immediately after the chemical solution bottle 12a is replaced and diluted normally. Therefore, the diagnosis is performed with the allowable upper limit concentration Nh being, for example, 0.35%.
- the chemical solution is diluted every time the reprocessor is operated in one step. Therefore, if N ⁇ N ′ and the concentration of the chemical solution is higher than that in the previous process, there may be an abnormality in the electrode unit 80, an error in the zero point correction value, a pipe failure in the apparatus, etc. Then, an abnormality is diagnosed and a warning is issued (step S16).
- the lower limit value NL is a lower limit concentration capable of ensuring disinfection performance when the chemical solution in the chemical solution bottle 12a is diluted. For example, when the concentration of the chemical solution in the chemical solution bottle 12a is 6%, the lower limit concentration NL is set. Diagnose as 0.2%.
- step S15 If the current concentration data N satisfies all the conditions of N ⁇ NH, N ⁇ N ′ and N ⁇ NL, the chemical solution in the chemical solution tank 70 is diluted to an appropriate concentration and diagnosed as normal (step) (S15) On the other hand, if N ⁇ NL, an abnormality is diagnosed and a warning is issued (step S16), prompting the replacement of the chemical solution and the inspection of each part.
- the second form shows application to a conductivity meter that measures the conductivity of the liquid to be measured.
- the electrode unit 80A of the second form is a standard liquid chamber 93A in which the diaphragm 91 and the internal liquid chamber 92 of the electrode unit 80 of the first form are abolished.
- the working electrode 88 and a part of the counter electrode 90 are exposed so as to contact the calibration standard solution Lc ′ stored in 93A.
- the calibration standard solution Lc ′ is a liquid having a certain conductivity.
- Other configurations are the same as those of the electrode unit 80.
- the current flowing between the working electrode 88 and the counter electrode 90 is measured in advance with the standard solution Lc ′ in the standard solution chamber 93A, and the zero point is adjusted. Thereafter, the cap 84 is opened to discharge the standard solution Lc ′, and the conductivity of the liquid to be measured can be measured.
- the conductivity of the solution has a correlation with the concentration, and the conductivity meter can also be used as a concentration meter. Therefore, instead of the electrode unit 80, the electrode unit 80A is added to the chemical tank 70. It is also possible to wear and measure the concentration of the chemical solution.
- the second embodiment as in the first embodiment, it is possible to automatically perform calibration and obtain a measurement state in actual use by simply replacing the electrode unit 80A.
- a simpler electrode unit 80A can be used as compared with the first embodiment, and the system cost can be reduced.
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Abstract
Description
本発明の実施の第1形態は、電極式溶液測定装置を溶液の濃度を測定する濃度測定への適用を示すものである。また、貯留容器である薬液タンクを含む内視鏡リプロセッサを適用している。具体的には、使用済みの内視鏡または内視鏡付属品を自動で再生する内視鏡リプロセッサに使用される薬液を計測対象の被測定液として、この薬液の濃度を測定する例について説明する。
次に、本発明の実施の第2形態について説明する。第2形態は、被測定液の導電率を測定する導電率計への適用を示すものである。
Claims (7)
- 計測対象である被測定液を貯留する貯留容器に対して着脱可能な電極ユニットを有する電極式溶液測定装置であって、
前記電極ユニットは、
前記貯留容器に着脱可能に挿入される筒状の筒状部と、
前記筒状部の先端部を応力付加により開放可能に塞いでいるキャップと、
前記キャップから所定距離離れて配置され、前記被測定液を選択的に透過する隔膜と、
前記筒状部の内壁、前記キャップ、および前記隔膜により囲まれ、校正用の標準液を貯留している標準液室と、
前記隔膜に接触するように前記筒状部内に配置されている作用電極と、
前記作用電極と電気的に接続されており、前記筒状部の表面に配置されている第1電極パッドと、
前記筒状部内で前記標準液室と前記隔膜により仕切られており、電解質の内部液を貯留している内部液室と、
前記筒状部内に前記作用電極と離間して配置され、少なくとも一部が前記内部液に接触するように前記内部液室内に露出している対極と、
前記対極に電気的に接続されており、前記筒状部の表面に配置されている第2電極パッドと、
を含むことを特徴とする電極式溶液測定装置。 - 計測対象である被測定液を貯留する貯留容器に対して着脱可能な電極ユニットを有する電極式溶液測定装置であって、
前記電極ユニットは、
前記貯留容器に着脱可能に挿入される筒状の筒状部と、
前記筒状部の先端部を応力付加により開放可能に塞いでいるキャップと、
前記筒状部の内壁および前記キャップにより囲まれ、校正用の標準液を貯留している標準液室と、
前記筒状部内に配置され、少なくとも一部が前記標準液に接触するように前記標準液室内に露出している作用電極と、
前記作用電極と電気的に接続されており、前記筒状部の表面に配置されている第1電極パッドと、
前記筒状部内に前記作用電極と離間して配置され、少なくとも一部が前記標準液に接触するように前記標準液室内に露出している対極と、
前記対極に電気的に接続されており、前記筒状部の表面に配置されている第2電極パッドと、
を含むことを特徴とする電極式溶液測定装置。 - 前記筒状部の外表面には、前記第1電極パッドおよび前記第2電極パッドを前記溶液貯留容器と位置合わせするための嵌合部が配置されていることを特徴とする請求項1又は2に記載の電極式溶液測定装置。
- 前記筒状部は、
前記キャップを保持するキャップ保持部と、
前記キャップ保持部に対して進退可能である進退部と、
前記進退部の先端側に設けられ、前記進退部が前記キャップ側に進行することにより前記キャップを押して前記キャップを開放する開放部と、
を含むことを特徴とする請求項1又は2に記載の電極式溶液測定装置。 - 請求項1に記載の貯留容器であって、
薬液を貯留するための容器部と、
前記容器部の一部に形成され、請求項1に記載の電極ユニットを収容するための凹形状を有し、底面に開口を有する収容部と、
前記収容部の内面に露出し、前記収容部の第1の位置まで進行した前記電極ユニットの前記第1電極パッドに電気的に接触するための第1接点と、
前記収容部の内面に露出し、前記第1の位置まで進行した前記電極ユニットの前記第2電極パッドに電気的に接触するための第2接点と、
を含むことを特徴とする貯留容器。 - 前記第1接点および前記第2接点に接続され、前記第1接点と前記第2接点との間に印加する測定用電圧を供給する電圧供給部と、
前記第1接点および前記第2接点に接続され、前記測定用電圧を印加したときに流れる電流を測定する電流測定部と、
を含むことを特徴とする請求項5に記載の貯留容器。 - 請求項5または6に記載の貯留容器を含むことを特徴とする内視鏡リプロセッサ。
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JP2015538187A JP5826982B1 (ja) | 2014-09-04 | 2015-04-21 | 電極式溶液測定装置、貯留容器、および内視鏡リプロセッサ |
EP15821013.8A EP3032246A4 (en) | 2014-09-04 | 2015-04-21 | Electrode-type solution measurement device, storage container, and endoscope reprocessor |
CN201580001451.XA CN105579836A (zh) | 2014-09-04 | 2015-04-21 | 电极式溶液测定装置、贮留容器以及内窥镜再处理器 |
US15/005,128 US20160139076A1 (en) | 2014-09-04 | 2016-01-25 | Electrode-type solution measuring apparatus, storage container, and endoscope reprocessor |
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Cited By (3)
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US9829422B2 (en) | 2015-06-04 | 2017-11-28 | Olympus Corporation | Concentration meter and endoscope reprocessor |
US9993144B2 (en) | 2015-06-05 | 2018-06-12 | Olympus Corporation | Control method for endoscope reprocessor |
WO2021039393A1 (ja) * | 2019-08-28 | 2021-03-04 | 株式会社堀場アドバンスドテクノ | 過酢酸濃度計 |
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CN108601515B (zh) * | 2016-07-29 | 2020-07-28 | 奥林巴斯株式会社 | 内窥镜再生处理器 |
US10478055B2 (en) | 2016-08-31 | 2019-11-19 | Asp Global Manufacturing Gmbh | Multi-port cap for reagent container |
US10328170B2 (en) * | 2016-10-21 | 2019-06-25 | Ethicon, Inc. | Dynamic disinfectant dosage with concentrate degradation compensation |
US11852601B2 (en) * | 2019-03-07 | 2023-12-26 | Kyungdong Navien Co., Ltd. | Electrode terminal assembly for liquid quality meter apparatus and liquid quality meter apparatus comprising same |
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