JP5230247B2 - Endoscope cleaning / disinfecting apparatus and disinfectant preparation method for endoscope cleaning / disinfecting apparatus - Google Patents

Description

  The present invention provides an endoscope cleaning / disinfecting apparatus that supplies a concentrated liquid of a disinfecting liquid from a bottle to a disinfecting liquid tank, and mixes the concentrated liquid and the diluted liquid in the disinfecting liquid tank to prepare a disinfecting liquid having a predetermined concentration, and The present invention relates to a disinfectant preparation method for an endoscope cleaning / disinfecting apparatus.

  An endoscope is known as a medical device used for inspection and treatment in a body cavity of a living body. The endoscope includes an insertion portion that is inserted into a body cavity. The insertion portion is a flexible rod-like body, and includes an imaging portion that images the inside of the body cavity and various channels such as a forceps channel through which the treatment tool is inserted. In the endoscope after use, body fluid and dirt are attached to the outer surface of the insertion portion and each channel. Since pathogenic bacteria and viruses contained in body fluids and filth cause nosocomial infections, endoscopes after use are always cleaned and disinfected.

  In order to efficiently clean and disinfect an endoscope, an endoscope cleaning / disinfecting apparatus is used. The endoscope cleaning / disinfecting apparatus stores a used endoscope in a cleaning tank and automatically performs various processes such as a cleaning process and a disinfection process. In the washing step, water, detergent, or the like is sprayed onto the endoscope to wash away body fluids and dirt attached to the outer surface and each channel. In the disinfecting process, a predetermined amount of disinfecting liquid is supplied from a disinfecting liquid tank provided in the apparatus into the cleaning tank, and the endoscope is immersed in the disinfecting liquid stored in the cleaning tank. Pathogenic bacteria and viruses that have not been removed in the washing process are removed with a disinfectant or the pathogenicity is eliminated.

The disinfectant, for example, glutaraldehyde, O Le preparative phthalic aldehyde human, high-level disinfectants, such as peracetic acid is used. Conventionally, glutaraldehyde has been frequently used, but at present, switching to peracetic acid has been progressing with a high disinfecting effect and less adverse effects on the human body.

  An endoscope in which a concentrated solution of peracetic acid (hereinafter referred to as a concentrated solution) and a diluting solution (for example, water) are supplied into a disinfectant tank, and both are mixed to automatically prepare a disinfectant solution of a predetermined concentration. A mirror cleaning / disinfecting apparatus is known (for example, see Patent Document 1). The concentrate is supplied in a dedicated bottle made of plastic. For example, the concentrated liquid is treated as a deleterious substance because it has a peracetic acid concentration of 6% and contains 10% or more of hydrogen peroxide.

  The bottle in which the concentrated liquid is sealed is attached to a bottle attaching portion provided in the endoscope cleaning / disinfecting apparatus. The concentrated liquid flows through the concentrated liquid injection path that connects the bottle mounting portion and the disinfecting liquid tank, and is supplied to the disinfecting liquid tank. A predetermined amount of water is supplied as a diluent to the disinfectant tank supplied with the concentrate, and a disinfectant having a predetermined concentration is generated. In the disinfectant tank, a liquid level sensor that detects the liquid level positions of the concentrated liquid and the diluted liquid is provided.

The disinfectant tank is formed in accordance with the shape of the empty space in the housing in order to reduce the size of the endoscope cleaning / disinfecting apparatus. In order to form the disinfectant tank in a complicated shape that matches the empty space, for example, plastic blow molding is used. In addition, in order to prevent deterioration of the disinfectant tank and the packing of the liquid level sensor due to the disinfectant, the disinfectant tank and packing are made of plastic such as polypropylene (PP) and polyethylene (PE) that have high resistance to peracetic acid. It has been.
Japanese Patent No. 3537370

  Peracetic acid and its concentrate have a very strong odor. Since the bottle and the bottle mounting part are connected in an airtight and liquid tight manner, the odor of the concentrated liquid remaining in the bottle is removed from the endoscope cleaning / disinfecting device while the bottle is attached to the bottle mounting part. Will not leak. However, if the bottle is removed from the bottle mounting portion at the time of replacement of the disinfecting liquid, the odor of the concentrated liquid remaining in the bottle and the bottle mounting portion leaks to the outside, and the working environment is deteriorated.

  Disinfectant tanks and packings formed using PP and PE have resistance to peracetic acid. However, when the high concentration of peracetic acid is repeatedly touched, the resistant disinfectant tank and packing are also deteriorated. In addition, crystals may precipitate in the disinfectant tank due to the concentrated liquid.

  An object of the present invention is to reduce the odor of peracetic acid that leaks from the bottle when the disinfectant is replaced. Another object of the present invention is to prevent deterioration of a disinfectant tank or the like due to the concentrated liquid and precipitation of crystals.

The endoscope cleaning / disinfecting apparatus of the present invention prepares a disinfectant solution having a predetermined concentration by supplying a predetermined amount of disinfectant concentrate and a predetermined amount of diluting solution for diluting the concentrate to a disinfectant tank and mixing them. In the endoscope cleaning / disinfecting apparatus, the concentrate supply means for supplying the concentrate from the bottle storing the concentrate to the disinfectant tank, and the position corresponding to the liquid level of the predetermined amount of concentrate in the disinfectant tank is disposed, and concentrate sensor for detecting the liquid level of the concentrated solution supplied from the concentrated liquid supply means when the liquid level of the concentrated liquid is detected by the concentrate sensor, the bottle by supplying bottle cleaning liquid in the bottle The bottle cleaning means for cleaning the inside and supplying the bottle cleaning liquid that has been cleaned inside the bottle as a diluent into the disinfecting liquid tank and mixing with the concentrated liquid, and the predetermined amount of concentrated liquid and the predetermined amount in the disinfecting liquid tank Of the disinfectant mixed with Is disposed at a position corresponding to the surface, the concentrate and the bottle washing solution sensor bottle and washings detects the liquid level of the mixed liquid, the bottle washing solution sensor, a liquid level of the liquid and concentrated liquid and the bottle washing solution are mixed And a control means for stopping the bottle cleaning means when it is detected.

Before concentrate the disinfectant solution tank is supplied, a diluting solution supplying means for supplying dilution liquid to the disinfectant solution tank, the disinfectant solution tank, disposed at a position corresponding to the liquid level of a predetermined amount of the diluent is provided with a dilution sensor for detecting the liquid level of the diluting liquid supplied from the diluent feeding means, control means, in the case where the liquid level of the diluent is detected by dilution sensor, diluent supply It is preferable to stop the means.

As a diluent supply means, a lid for opening and closing the concentrate injection path for supplying the concentrate from the bottle to the disinfectant tank, and supplying the bottle cleaning liquid to the concentrate injection path with the lid closed, A bottle cleaning means for supplying the bounced bottle cleaning liquid as a diluent into the disinfectant tank, and the control means stops the bottle cleaning means when the liquid level of the bottle cleaning liquid is detected by the dilution sensor. It is preferable to make it .

The method for preparing a disinfectant for an endoscope cleaning / disinfecting apparatus of the present invention supplies a predetermined amount of a disinfectant concentrate and a predetermined amount of a dilute solution for diluting the concentrate to a disinfectant tank, and mixes them. in disinfectant preparation method of the endoscope washing and disinfecting apparatus for the preparation of disinfectant, the concentrate supply means, a step of supplying the concentrated solution to the disinfectant solution tank from the bottle stored concentrate, in disinfectant solution tank, A step of detecting the liquid level of the concentrated liquid supplied from the concentrated liquid supply means by the concentrated liquid sensor arranged at a position corresponding to the liquid level of the predetermined amount of the concentrated liquid, and a liquid level of the concentrated liquid by the concentrated liquid sensor When the bottle is detected, the bottle cleaning liquid is supplied into the bottle by the bottle cleaning means to clean the inside of the bottle, and the bottle cleaning liquid that has been cleaned inside the bottle is supplied to the disinfecting liquid tank as a dilution liquid. Mixing process and disinfectant In the tank, a liquid in which the concentrate and the bottle cleaning liquid are mixed by the bottle cleaning liquid sensor disposed at a position corresponding to the liquid level of the disinfecting liquid in which the predetermined amount of the concentrated liquid and the predetermined amount of the diluted liquid are mixed. And a step of causing the control means to stop the bottle cleaning means when the liquid level of the mixed liquid and the bottle cleaning liquid is detected by the bottle cleaning liquid sensor .

Before the step of supplying the concentrate from the bottle storing the concentrate by the concentrate supply means to the disinfection liquid tank, the step of supplying the dilution liquid into the disinfection liquid tank by the dilution liquid supply means, and the inside of the disinfection liquid tank The step of detecting the liquid level of the diluent supplied from the diluent supply means by a diluent sensor arranged at a position corresponding to the liquid level of the predetermined amount of the diluent, and the diluent sensor And a step of causing the control means to stop the dilution liquid supply means when the liquid level is detected .

  According to the present invention, since the inside of the bottle that has finished supplying the concentrate to the disinfectant tank is cleaned with the bottle cleaning liquid, when the bottle is removed from the endoscope cleaning / disinfecting apparatus, the odor of the concentrate from the bottle is removed. Can be prevented. Further, since the bottle cleaning liquid is used as a diluting liquid for diluting the concentrated liquid, the supply path for supplying the diluting liquid and the process for supplying the diluting liquid can be omitted.

  In another invention, since the diluting liquid is supplied into the disinfecting liquid tank and then the concentrated liquid is supplied, the concentrated liquid does not directly touch the disinfecting liquid tank or the like. Thereby, deterioration of the disinfectant liquid tank etc. by a concentrate and precipitation of a crystal | crystallization can be prevented. In addition, since the range of materials selection for the disinfectant tank and the like is widened, the cost of the disinfectant tank and the like can be expected to be improved and the moldability can be improved.

  Since the disinfecting liquid is prepared by supplying the diluting liquid, the concentrated liquid, and the bottle cleaning liquid into the disinfecting liquid tank, a stirring effect can be obtained. Thereby, a disinfectant having a uniform concentration distribution can be obtained.

  An endoscope 10 shown in FIG. 1 is an example of an endoscope that is cleaned and disinfected by the endoscope cleaning / disinfecting apparatus of the present invention. The endoscope 10 includes an insertion unit 11 that is inserted into a body cavity of a living body, and an operation unit 12 that operates the insertion unit 11.

  The insertion part 11 is a rod-shaped body having a circular cross section and has flexibility. At the distal end of the insertion unit 11, an illumination unit that illuminates the inside of the body cavity and an imaging unit (not shown) that images the inside of the body cavity are provided. In the insertion portion 11, an air / water feeding channel 15 and a forceps channel 16, one end of which is exposed from the distal end of the insertion portion 11, are provided. A suction channel 17 is connected to the forceps channel 16.

  The operation unit 12 is provided with a forceps port 20 to which the forceps channel 16 is connected, an air / water supply button 21, and a suction button 22. The forceps port 20 is fitted with a forceps port cap 23 that is removed during use. The air / water supply button 21 and the suction button 22 are detachably attached to the attachment port 12a to which the air / water supply channel 15 is connected and the attachment port 12b to which the suction channel 17 is connected. The forceps port cap 23, the air / water supply button 21, and the suction button 22 are removed from the operation unit 12 when the endoscope 10 is cleaned.

In the universal cord 25 and the connector unit 26 connected to the operation unit 12, the air / water supply channel 15 and the suction channel 17, and the wiring of the illumination unit and the imaging unit are incorporated. The connector portion 26 is provided with a contact portion for connecting the wiring to the light source device and the video processor. At the time of cleaning the endoscope 10, a waterproof cap 27 (see FIG. 3 ) that covers the contact portion and waterproofs is attached to the connector portion 26.

  An endoscope cleaning / disinfecting apparatus (hereinafter referred to as an apparatus) 28 shown in FIG. 2 includes a box-shaped apparatus main body 30. A cleaning tank 31 in which the used endoscope 10 is accommodated is provided on the upper surface of the apparatus main body 30. The cleaning tank 31 is a water tank having an open top, and is formed of a metal plate having excellent heat resistance, corrosion resistance, etc., such as stainless steel.

  An operation panel 33 and a display panel 34 are arranged in front of the upper surface of the apparatus main body 30. The operation panel 33 includes a number of buttons for instructing various settings related to cleaning and disinfection of the endoscope 10 and starting or stopping of cleaning and disinfection. For example, a liquid crystal display (LCD) is used for the display panel 34, and various setting screens, remaining time of each process, a warning message when a trouble occurs, and the like are displayed.

  On the front surface of the apparatus main body 30, a bottle housing portion 37 that can be opened and closed by a door 36 is provided. A bottle unit 38 is accommodated in the bottle accommodating portion 37. The bottle unit 38 includes a first bottle 39 enclosing a concentrated peracetic acid solution and a second bottle 40 enclosing a buffering agent. The first bottle 39 and the second bottle 40 are fastened by a belt-like film 41 wound around the outer periphery, and are handled as one bottle unit 38 integrally.

  The first bottle 39 has a substantially box-shaped bottle body 39a, a substantially cylindrical mouth portion 39b provided on the upper surface of the bottle body 39a, and a lid portion 39c provided in the mouth portion 39b. . A concentrated liquid is stored in the bottle body 39a. The mouth portion 39b communicates with the inside of the bottle body 39a, and the concentrated liquid in the bottle body 39a can be poured outside through the mouth portion 39b. The lid portion 39c is made of a thin plate-like body and closes the mouth portion 39b so that the concentrated liquid does not leak. The first bottle 39 is made of a plastic having resistance to a concentrated solution of peracetic acid.

  The first bottle 39 is accommodated in the bottle accommodating portion 37 in a state where the mouth portion 39b is laid obliquely so that the mouth portion 39b faces downward. The mouth portion 39b is eccentric with respect to the central axis of the bottle main body 39a in order to discharge the liquid in the first bottle 39 to the outside without remaining due to its own weight. Specifically, the inner surface of the mouth portion 39b is flush with the inner surface of the side surface 39d of the bottle main body 39a that becomes the bottom surface when the first bottle 39 is laid down (located in the same plane). In addition, since the 2nd bottle 40 uses the same thing as the 1st bottle 39, detailed description is abbreviate | omitted.

  On the side of the bottle housing portion 37, a tank housing portion 45 that can be opened and closed by a door 44 is provided. A detergent tank 46 and an alcohol tank 47 are housed in the tank housing part 45. In the detergent tank 46, a detergent used for cleaning the endoscope 10 is stored. The alcohol tank 47 stores alcohol that flows into each channel after the endoscope 10 is cleaned and disinfected.

  A top cover 49 for opening and closing the cleaning tank 31 is provided on the upper surface of the apparatus main body 30. The top cover 49 is a substantially rectangular plate-like body made of, for example, plastic, and one side is pivotally supported by a hinge 50 provided on the upper surface of the apparatus main body 30. The top cover 49 is closed during cleaning and disinfection of the endoscope 10 and covers the upper part of the cleaning tank 31. A packing 49 a is provided on the outer periphery of the top cover 49 to seal the inside of the cleaning tank 31 when the top cover 49 is closed. The top surface of the top cover 49 is a transparent viewing window, and the state of cleaning and disinfection can be visually confirmed. Although not shown in detail, the top cover 49 is provided with a lock mechanism for locking in the closed position.

  The inclined portion 31 a provided at the corner of the cleaning tank 31 is provided with a supply port 52 that supplies liquid used for cleaning and disinfecting the endoscope 10 into the cleaning tank 31. The supply port 52 is provided with a water supply nozzle 53, a detergent supply nozzle 54, and a disinfectant supply nozzle 55 that are bent toward the cleaning tank 31. These nozzles 53 to 55 are arranged at positions higher than the liquid level of the liquid stored in the cleaning tank 31. The top cover 49 is provided with a protruding portion 49 b that accommodates the supply port 52.

  The water supply nozzle 53 supplies water into the cleaning tank 31. The detergent supply nozzle 54 supplies the detergent stored in the detergent tank 46 into the cleaning tank 31. The disinfectant supply nozzle 55 supplies the disinfectant stored in the disinfectant tank into the cleaning tank 31. Body fluid and dirt attached to the endoscope 10 after use are washed away with a cleaning liquid in which water and a detergent are mixed. Pathogenic bacteria and viruses that have not been washed away with the cleaning solution are removed by the disinfecting solution, or the pathogenicity is lost.

  As shown in FIG. 3, a channel cleaning port 57 is provided on the inner side surface 31 b of the cleaning tank 31. The channel cleaning port 57 is used for cleaning and disinfecting the air / water supply channel 15, the forceps channel 16, and the suction channel 17 of the endoscope 10 shown in FIG. The channel cleaning port 57 is provided with an air / water channel coupler 58, a suction channel coupler 59, and a forceps channel coupler 60.

  In the endoscope 10 accommodated in the cleaning tank 31, the mounting ports 12a and 12b and the forceps port 20 are connected to the couplers 58 to 60 by tubes 62 to 64 having flexibility. Gases and liquids such as water, cleaning liquid, disinfecting liquid, alcohol, and compressed air are supplied from the couplers 58 to 60 into the air / water supply channel 15, the forceps channel 16, and the suction channel 17.

  An airtight test port 65 used for an airtight test of the endoscope 10 is provided on the inner side surface 31 c of the cleaning tank 31. The airtight test port 65 is provided with a tube coupler 65a for supplying compressed air. A tube having flexibility is attached to the tube coupler 65a. The tube is connected to a waterproof cap 27 attached to the connector portion 26. A liquid level sensor 66 is provided in the vicinity of the inner side surface 31c. The liquid level sensor 66 detects the liquid level position of the liquid stored in the cleaning tank 31.

  A small item cleaning basket 68 is attached to the center of the bottom surface 31 d of the cleaning tank 31. The accessory washing basket 68 is, for example, a circular basket having an upper opening, and accessory parts such as the air / water supply button 21, the suction button 22, and the forceps port cap 23 removed from the operation unit 12 of the endoscope 10 are used. Be contained. A waste liquid port 69 is provided at a corner of the bottom surface 31d. The waste liquid port 69 discharges used water, cleaning liquid, and disinfecting liquid from the cleaning tank 31.

  FIG. 4 shows a piping system in the apparatus main body 30. A rubber heater 71 is attached to the lower surface of the cleaning tank 31. The rubber heater 71 heats the cleaning liquid or the disinfecting liquid stored in the cleaning tank 31 through the cleaning tank 31. In the cleaning tank 31, a temperature sensor (TE) 72 for measuring the temperature of the cleaning liquid or the disinfecting liquid and a liquid level sensor (LS) 66 are provided. As the liquid level sensor 66, for example, a float type level sensor in which the float moves up and down in accordance with the liquid level is used.

  The water supply nozzle 53 is connected to a liquid supply path 74 through which water, a cleaning liquid, and a disinfecting liquid flow. The other end of the liquid supply path 74 is connected to the discharge port of the electric three-way valve 75. A water supply path 76 is connected to one inflow port of the electric three-way valve 75.

  The water supply channel 76 is exposed to the outside of the apparatus main body 30 and connected to a tap water tap. The water supply path 76 is provided with a solenoid valve 78 and a water filter (WF) 79 from the side connected to the faucet. The solenoid valve 78 switches supply / stop of tap water to the water supply channel 76. WF79 captures foreign substances and bacteria contained in tap water. The electric three-way valve 75 connects the liquid supply path 74 and the water supply path 76 when supplying water into the cleaning tank 31.

  A detergent supply path 81 is connected to the detergent supply nozzle 54. The other end of the detergent supply path 81 is connected to a detergent tank 46 in which a detergent (for example, liquid enzyme detergent or the like) 82 is stored. A water pump (hereinafter abbreviated as WP) 83 is provided in the detergent supply path 81. The WP 83 sucks the detergent 82 in the detergent tank 46 and discharges it from the detergent supply nozzle 54.

  A disinfectant supply path 85 is connected to the disinfectant supply nozzle 55. The other end of the disinfecting liquid supply path 85 is connected to a disinfecting liquid tank 87 in which the disinfecting liquid 86 is stored. The disinfecting liquid supply path 85 is provided with a WP 88 that sucks the disinfecting liquid 86 and discharges it from the disinfecting liquid supply nozzle 55.

  The disinfectant tank 87 is formed by blow molding using polypropylene (PP) having resistance to peracetic acid. The reason why the blow molding is used is that the disinfectant tank 87 is formed in a complicated shape that matches the empty space in the apparatus main body 30 and has a predetermined strength. A discharge port 90 for discharging the used disinfectant 86 is provided on the lower surface of the disinfectant tank 87. The discharge port 91 is connected to a discharge path 91 that is routed outside the apparatus main body 30. An electromagnetic valve 92 is provided in the discharge path 91.

  A waste liquid path 94 is connected to the waste liquid port 69. The waste liquid path 94 is branched into a first waste liquid path 95 and a second waste liquid path 96 on the downstream side. The first waste liquid path 95 discharges the cleaning liquid and water used for cleaning the endoscope 10 to the outside of the apparatus main body 30 by the WP 97. The second waste liquid path 96 returns the disinfecting liquid 86 used for disinfecting the endoscope 10 to the disinfecting liquid tank 87. Since the disinfecting liquid 86 does not lose its disinfecting effect after several uses, it is returned to the disinfecting liquid tank 87 and used repeatedly. The first waste liquid path 95 and the second waste liquid path 96 are switched by opening and closing electromagnetic valves 98 and 99 provided respectively.

  A circulation path 101 is also connected to the waste liquid port 69. The circulation path 101 is provided with a WP 102 that sucks the liquid in the cleaning tank 31. The circulation path 101 branches into a first circulation path 103 and a second circulation path 104 on the downstream side. The first circulation path 103 is connected to the other inflow port of the electric three-way valve 75. The electric three-way valve 75 connects the first circulation path 103 and the liquid supply path 74 and circulates the liquid sucked from the cleaning tank 31 by the WP 102 through the water supply nozzle 53 into the cleaning tank 31.

The second circulation path 104 is connected to the air / water channel coupler 58, the suction channel coupler 59, and the forceps channel coupler 60 of the channel cleaning port 57. The liquid sucked from the cleaning tank 31 by the WP 102 is supplied from the couplers 58 to 60 into the channels 15 to 17 of the endoscope 10.

  In addition to the second circulation path 104, the channel cleaning port 57 is connected to an air supply path that blows air into each channel to remove water droplets, an alcohol supply path that causes alcohol to flow and dry in each channel, and the like. . In order to prevent complication of the drawing, FIG. 4 does not show an air supply path, an alcohol supply path, and the like.

  In the vicinity of the disinfectant tank 87, a bottle housing portion 37 is arranged. The bottle housing portion 37 has a bottom surface portion 107 on which the bottle unit 38 is placed. The bottom surface portion 107 is inclined so as to become lower toward the back of the apparatus main body 30. The bottle unit 38 is tilted so that the mouth portion 39 b faces downward, and the side surface 39 d is placed on the bottom surface portion 107. A first bottle mounting portion 108 is provided at the lowermost end of the bottom surface portion 107. The first bottle mounting portion 108 has a base shape that fits in an airtight and liquid-tight manner outside the mouth portion 39 b of the first bottle 39.

  A concentrated liquid injection path 110 provided at the upper part of the disinfectant tank 87 is attached to the first bottle mounting part 108. The concentrated liquid injection path 110 is formed of a pipe communicating with the disinfecting liquid tank 87, and a sharp tip 110 a protrudes into the first bottle mounting part 108. When the mouth part 39 b of the bottle unit 38 is pushed into the first bottle mounting part 108, the concentrated liquid injection path 110 is inserted into the first bottle 39 by pushing through the lid part 39 c with the tip part 110 a.

  Although not shown in detail, the bottle housing portion 37 is also provided with a second bottle mounting portion for the second bottle 40. The second bottle mounting portion has the same shape as the first bottle mounting portion 108. A buffer injection path provided in the disinfectant tank 87 is connected to the second bottle mounting portion along with the concentrated liquid injection path 110. The buffer is supplied into the disinfectant tank 87 through the buffer injection path simultaneously with the concentrated liquid.

  A bottle cleaning nozzle 112 is provided in the concentrated liquid injection path 110. A bottle cleaning path 113 branched from the water supply path 76 is connected to the bottle cleaning nozzle 112. An electromagnetic valve 114 is provided in the bottle cleaning path 113. Water sprayed from the bottle cleaning nozzle 112 into the first bottle 39 cleans the first bottle 39 as a bottle cleaning liquid.

  A bottle sensor 116 that detects the bottle unit 38 is provided in the bottle housing portion 37. The bottle sensor 116 detects the bottle unit 38 when the first bottle 39 and the second bottle 40 are pushed into the first bottle mounting portion 108 and the second bottle mounting portion.

  In the disinfecting liquid tank 87, there are provided a concentrated liquid sensor 118 that detects and turns on the liquid level and a bottle cleaning liquid sensor 119. The concentrated liquid sensor 118 and the bottle cleaning liquid sensor 119 are attached to the disinfecting liquid tank 87 from the outside of the disinfecting liquid tank 87 by using, for example, holes formed in the disinfecting liquid tank 87. A packing for preventing the disinfectant 86 from leaking is attached between the disinfectant tank 87, the concentrated liquid sensor 118, and the bottle cleaning liquid sensor 119. For this packing, PP having resistance against peracetic acid, polyethylene (PE) or the like is used.

  The concentrated liquid sensor 118 detects a prescribed amount of the concentrated liquid and buffer to be supplied from the bottle unit 38. The bottle cleaning liquid sensor 119 detects the supply amount of the dilution liquid to be supplied in order to prepare the disinfecting liquid 86 having a predetermined concentration by diluting the prescribed amount of the concentrated liquid and the buffer stored in the disinfecting liquid tank 87. To do. In the present invention, the bottle cleaning liquid is used as the diluent. Therefore, when the bottle cleaning liquid flowing into the disinfecting liquid tank 87 from the first bottle 39 reaches a predetermined amount, the bottle cleaning liquid sensor 119 is a liquid liquid in which the concentrated liquid, the buffering agent, and the bottle cleaning liquid are mixed. Detect the surface.

  As shown in FIG. 5, the device 28 includes a CPU 122 that controls the entire device, a ROM 123 that stores a control program and various data, and a RAM 124 that is an execution area of the control program read from the ROM 123. I have. Sensors such as a liquid level sensor 66, a temperature sensor 72, a bottle sensor 116, a concentrated liquid sensor 118, and a bottle cleaning liquid sensor 119 are connected to the CPU 122. Also connected to the CPU 122 are an LCD driver 125 that drives the display panel 34, a valve driver 126 that drives each electromagnetic valve, a motor driver 127 that drives the electric three-way valve 75, and the like. A WP driver 128 that drives each WP, a heater driver 129 that drives the rubber heater 71, and the like are also connected to the CPU 122.

  The apparatus 28 has a plurality of operation modes such as a cleaning / disinfecting mode, a disinfecting liquid preparation mode, and a disinfecting liquid discharge mode. Each mode is selected by operating the operation panel 33. Hereinafter, the disinfectant preparation mode for preparing a new disinfectant 86 in the disinfectant tank 87 will be described with reference to the flowchart of FIG.

  When the device 28 is set to the disinfecting liquid preparation mode by operating the operation panel 33 (S1), the CPU 122 sets the disinfecting liquid 86 in the disinfecting liquid tank 87 based on the signals of the concentrated liquid sensor 118 and the bottle cleaning liquid sensor 119. The presence or absence is confirmed (S2). When the disinfecting liquid 86 is stored in the disinfecting liquid tank 87, the CPU 122 opens the electromagnetic valve 92 to discharge the disinfecting liquid 86 in the disinfecting liquid tank 87 (S3). When there is no disinfecting liquid 86 in the disinfecting liquid tank 87, the CPU 122 accepts the installation of a new bottle unit 38 (S4). It is preferable that a predetermined amount of diluent is supplied into the disinfectant tank 87 after the disinfectant 86 is discharged, and the disinfectant tank 87 is cleaned.

  As shown in FIG. 7 (A), the bottle unit 38 storing the concentrated liquid 132 and the buffering agent is laid obliquely so that the mouth portion 39b faces downward, and the bottle housing portion from the mouth portion 39b side. 37. The bottle unit 38 is placed on the bottom surface portion 107.

  As shown in FIG. 7B, the bottle unit 38 is slid on the bottom surface portion 107, and the mouth portion 39 b is pushed into the first bottle attachment portion 108. The distal end portion 110a of the concentrate injection path 110 is inserted into the mouth portion 39b, and the lid portion 39c is pushed and broken. Since the first bottle mounting portion 108 is fitted to the outer periphery of the mouth portion 39 b so as to be airtight and liquid tight, the odor of the concentrated liquid 132 does not leak from the first bottle 39. Although not described in detail, the second bottle 40 is fitted to the second bottle mounting portion in the same manner as the first bottle 39.

  The concentrate 132 and the buffer in the bottle unit 38 flow into the disinfectant tank 87 through the concentrate injection path 110 and the buffer injection path. The concentrated liquid sensor 118 detects the liquid level where the concentrated liquid 132 and the buffering agent are mixed, and turns on (S5).

  The bottle sensor 116 detects the bottle unit 38 accommodated in the bottle accommodating portion 37 and is turned on. In addition, the CPU 122 performs measurement for a predetermined time after the bottle sensor 116 is turned on. Then, when the concentrate sensor 118 is not turned on within a predetermined time, error processing is performed (S6). This is because when the concentrate sensor 118 is not turned on within a predetermined time, there is a possibility that an empty bottle unit 38 or a bottle unit 38 with a small amount of the concentrate 132 or the like is set. As a cause of the error in which the concentrated liquid 134 or the like is not detected, a liquid supply error such as the concentrated liquid 134 leaking out of the disinfecting liquid tank 87 may be considered. As the error processing, for example, an error message is displayed on the display panel 34.

  As shown in FIG. 7C, the CPU 122 opens the electromagnetic valves 78 and 114 in response to the ON signal of the concentrate sensor 118. The water that has flowed through the water supply path 76 and the bottle cleaning path 113 is sprayed into the first bottle 39 from the bottle cleaning nozzle 112 as a bottle cleaning liquid 136 (S7). As a result, the concentrated liquid 132 remaining in the first bottle 39 is washed away by the bottle cleaning liquid 136. In the disinfectant preparation mode, the electric three-way valve 75 is switched so as to connect the liquid supply path 74 and the first circulation path 103, so that water does not flow into the cleaning tank 31.

  The bottle cleaning liquid 136 that has flowed into the disinfecting liquid tank 87 through the concentrated liquid injection path 110 dilutes the concentrated liquid 132 to prepare the disinfecting liquid 86. When the liquid level of the disinfecting liquid 86 reaches the bottle cleaning liquid sensor 119, the bottle cleaning liquid sensor 119 is turned on (S8). In response to the ON signal of the bottle cleaning liquid sensor 119, the CPU 122 closes the electromagnetic valves 78 and 114 and stops the supply of the bottle cleaning liquid 136 (S9). A disinfecting liquid 86 having a predetermined concentration is prepared in the disinfecting liquid tank 87.

  Next, a cleaning / disinfecting mode in which the endoscope 10 is cleaned and disinfected will be briefly described with reference to FIG. When the used endoscope 10 is accommodated in the cleaning tank 31 and the cleaning / disinfecting mode by the operation panel 33 is set (S10), the cleaning process (S11) is started.

The CPU 122 drives the electromagnetic valve 78, the electric three-way valve 75, the WP 83, etc., supplies a predetermined amount of water and detergent 82 into the cleaning tank 31, and heats it with the rubber heater 71. The CPU 122 sucks the cleaning liquid obtained by mixing water and the detergent 82 with the Wp 102, circulates it through the circulation paths 101, 103, 104, etc., injects it from the water supply nozzle 53 toward the endoscope 10, and adheres to the outer surface. Wash away the filth. Further, the cleaning liquid is also poured into each channel of the endoscope 10 for cleaning. After completion of the cleaning process, the cleaning liquid is discharged through the waste liquid paths 94 and 95.

  After the cleaning process, a rinsing process (S12) is started. The CPU 122 supplies water into the cleaning tank 31 and circulates this water to remove the cleaning liquid remaining on the outer surface of the endoscope 10 and in each channel. The water used for rinsing is also discharged through the waste liquid paths 94 and 95.

  After the rinsing process, the disinfection process (S13) is started. The CPU 122 drives the WP 88 to suck the disinfecting liquid 86 in the disinfecting liquid tank 87 and supplies a predetermined amount of the disinfecting liquid 86 into the cleaning tank 31. The disinfectant liquid 86 is heated by the rubber heater 71. As in the washing process and the rinsing process, the disinfecting solution 86 is circulated in each channel of the washing tank 31 and the endoscope 10 to remove pathogens and viruses that have not been washed away in the washing process, or to eliminate pathogenicity. . After the disinfection process is completed, the disinfecting liquid 86 is returned to the disinfecting liquid tank 87 through the waste liquid paths 94 and 96.

  The cleaning and disinfection of the endoscope 10 is completed through a rinsing step (S14) for removing the disinfecting liquid 86 and a drying step (S15) for drying the inside of each channel of the endoscope 10 with air and alcohol.

  Next, the disinfectant discharge mode used when discharging the used disinfectant 86 from the apparatus 28 will be described with reference to the flowchart of FIG.

  The concentration of the disinfecting solution 86 is decreased by mixing water remaining in the cleaning tank 31 after the endoscope 10 is cleaned, or the disinfecting effect is weakened due to the progress of decomposition of peracetic acid. Further, the disinfecting liquid 86 adhering to the cleaning tank 31 and the endoscope 10 is left in the disinfecting liquid tank 87 without being collected, so that the disinfecting liquid 86 in the disinfecting liquid tank 87 is reduced. The disinfecting liquid 86 needs to be replaced when the disinfecting effect becomes weak or when the storage amount in the disinfecting liquid tank 87 decreases. Further, the disinfecting liquid 86 that has passed for a predetermined time after the adjustment may be decomposed and the disinfecting effect may be weakened, so that replacement is required.

  For example, the device 28 of the present embodiment counts the number of times the disinfectant 86 is used after the preparation of the disinfectant 86, that is, the number of times the endoscope 10 is disinfected, and when the count value reaches a predetermined number, the display panel 34 A message prompting the replacement of the disinfectant 86 is displayed. When the operation panel 33 sets the device 28 to the disinfecting liquid discharge mode (S20), the CPU 122 determines whether or not the disinfecting liquid 86 in the disinfecting liquid tank 87 is present based on the signals from the concentrated liquid sensor 118 and the bottle cleaning liquid sensor 119. Is confirmed (S21).

  The CPU 122 opens the electromagnetic valve 92 when the disinfecting liquid 86 is stored in the disinfecting liquid tank 87 (S22). The disinfecting liquid 86 in the disinfecting liquid tank 87 is discharged out of the apparatus main body 30 through the discharge port 90 and the discharge path 91. The CPU 122 closes the electromagnetic valve 92 after a predetermined time has elapsed after the concentrate sensor 118 is turned off (S23) (S24). This is because all the disinfecting liquid 86 in the disinfecting liquid tank 87 is discharged. The CPU 122 performs error processing when there is no disinfecting liquid 86 in the disinfecting liquid tank 87 (S25). As the error processing, for example, it is displayed that there is no disinfectant 86 to be discharged on the display panel 34. It is preferable that a predetermined amount of diluent is supplied into the disinfectant tank 87 after the disinfectant 86 is discharged, and the disinfectant tank 87 is cleaned.

  After the disinfecting liquid 86 is discharged, the empty bottle unit 38 accommodated in the bottle accommodating portion 37 can be replaced with a new bottle unit 38. The empty bottle unit 38 is cleaned in the first bottle 39 by the bottle cleaning liquid 136 when the concentrated liquid 132 is supplied. Therefore, when the empty bottle unit 38 is removed from the bottle accommodating portion 37, the working environment is not deteriorated by the odor of the concentrated liquid 132.

  In the above embodiment, the liquid 132 is supplied to the disinfecting liquid tank 87 in the order of the concentrated liquid 132 and the bottle cleaning liquid 136 to prepare the disinfecting liquid 86. However, the diluting liquid is supplied to the disinfecting liquid tank 87 before the concentrated liquid 132. An antiseptic solution 86 may be prepared. In the following, an embodiment in which the diluting solution is first supplied to the disinfecting solution tank 87 to prepare the disinfecting solution 86 will be described.

  As shown in FIG. 10A, in this embodiment, the water supply channel 76 and the second waste liquid channel 96 are connected by a dilution channel 140. The dilution path 140 is provided with an electromagnetic valve 141. In the disinfectant tank 87, a diluent sensor 142 for detecting the liquid level of the diluent is provided. The dilution liquid sensor 142 is disposed below the concentrated liquid sensor 118. The diluent sensor 142 is connected to the CPU 122. The distance between the diluent sensor 142 and the concentrate sensor 118 is set according to the prescribed amounts of the concentrate 132 and the buffer.

  The disinfectant preparation mode according to the above embodiment will be described with reference to the flowcharts of FIGS. The CPU 122 performs the processing of S1 to S3 and confirms that there is no disinfecting liquid 86 in the disinfecting liquid tank 87. The CPU 122 opens the solenoid valves 78 and 141 when the disinfecting liquid 86 is not in the disinfecting liquid tank 87.

  As shown in FIG. 10A, the water that has flowed through the water supply path 76, the dilution path 140, and the second waste liquid path 96 is supplied into the disinfecting liquid tank 87 as the dilution liquid 144 (S30). When a predetermined amount of diluent 144 is supplied, the diluent sensor 142 detects the liquid level and turns on (S31). When the diluent sensor 142 is turned on, the CPU 122 closes the electromagnetic valves 78 and 141 and stops supplying the diluent 144 (S32).

  CPU122 performs processing of S4. As shown in FIG. 10B, a predetermined amount of concentrated liquid 132 and buffer are supplied into the disinfecting liquid tank 87. The concentrated liquid sensor 118 detects the liquid level where the diluted liquid 144, the concentrated liquid 132, and the buffer are mixed, and turns on (S5).

  CPU122 performs the process of S7-S9. As shown in FIG. 10C, the inside of the first bottle 39 is cleaned with a bottle cleaning liquid 136. In the disinfecting liquid tank 87, a disinfecting liquid 86 having a predetermined concentration diluted with the bottle cleaning liquid 136 is prepared.

  According to this embodiment, since the concentrated liquid 132 does not directly touch the disinfecting liquid tank 87 and the packing of each sensor, it is possible to prevent deterioration of the disinfecting liquid tank 87 and the packing. Further, the concentrated liquid 132 can also prevent crystals from being deposited in the disinfectant tank 87. Since the range of material selection for the disinfectant tank 87 and packing is widened, cost reduction and improvement in formability can be expected. In addition, since the stirring effect is obtained by supplying the diluted solution 144, the concentrated solution 132, and the bottle cleaning solution 136 in this order, the concentration distribution of the disinfecting solution 86 can be made uniform.

  It should be noted that the supply amount of the diluent 144 is preferably larger from the viewpoint of preventing deterioration of the disinfectant tank 87 and packing due to the concentrate 132. For example, a value obtained by subtracting the amount of the bottle cleaning liquid 136 necessary for cleaning the first bottle 39 from the total amount of the diluent necessary for diluting the concentrated liquid 132 to a predetermined concentration is used as the supply amount of the diluent 144. May be.

  In the above embodiment, the dilution liquid 144 is supplied into the disinfecting liquid tank 87 through the second waste liquid path 96, but the bottle cleaning liquid 136 supplied from the bottle cleaning nozzle 112 may be used as the dilution liquid. As shown in FIG. 12A, for example, a lid 150 is provided at the tip 110a of the concentrated solution injection path 110. The lid 150 is rotatably supported by a rotary shaft 151 attached to the concentrate injection path 110, and rotates between a closed position that closes the distal end portion 110a and an open position that opens the distal end portion 110a. . The lid 150 is biased to a closed position by a spring (not shown), for example. The lid 150 is provided with a protrusion 152 on the opposite side across the rotation shaft 151.

  When supplying the diluting liquid into the disinfecting liquid tank 87, water is ejected from the bottle washing nozzle 112 without the bottle unit 38 being attached to the first bottle attaching portion 108. If the urging force of the spring that urges the lid 150 to the closed position is made stronger than the pressure of the water sprayed from the bottle washing nozzle 112, the water bounced by the lid 150 is used as the diluting liquid 144 to store the disinfectant liquid tank. 87 can be supplied.

  As shown in FIG. 12B, when the bottle unit 38 is attached to the first bottle attaching portion 108, the protrusion 152 is pushed by the mouth portion 39 b of the first bottle 39. As a result, the lid 150 rotates to the open position against the bias of the spring, so that the concentrate 132 can be supplied into the disinfectant tank 87. After supplying the concentrate 132 and the buffer, if the bottle cleaning liquid 136 that has cleaned the inside of the first bottle 39 is supplied into the disinfecting liquid tank 87, the disinfecting liquid 86 having a predetermined concentration can be obtained. Also in this embodiment, it is possible to prevent the concentrated liquid 132 from directly touching the disinfecting liquid tank 87, packing, or the like.

  A lid similar to the lid 150 may be provided in the buffer injection path. According to this, when the bottle unit 38 is not accommodated in the bottle accommodating part 37, it is possible to prevent the odor of the disinfecting liquid 86 from leaking from the disinfecting liquid tank 87.

  In each of the above-described embodiments, the concentrated liquid 132 is substantially supplied by the user, but may be automatically performed by the device 28. For example, it is preferable that an electromagnetic valve is provided in the concentrate injection path 110 and the buffer injection path, and the timing at which the concentrate 132 or the like is supplied from the bottle unit 38 to the disinfectant tank 87 is preferably determined by the apparatus 28 itself.

  The present invention can also be applied to an endoscope disinfection device that does not have an endoscope cleaning function. It can also be used for disinfection devices such as endoscope treatment tools and other medical instruments. The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention.

It is a top view which shows the structural example of an endoscope. It is a perspective view which shows the external appearance shape of the endoscope washing | cleaning disinfection apparatus of this invention. It is a top view which shows the structure of a washing tank. It is a piping diagram which shows the schematic piping system in an apparatus main body. It is a block diagram which shows a part of electrical structure of an endoscope washing | cleaning disinfection apparatus. It is a flowchart which shows the process sequence of disinfection liquid preparation mode. It is explanatory drawing which shows the process order of disinfection liquid preparation mode. It is a flowchart which shows the process sequence of washing | cleaning disinfection mode. It is a flowchart which shows the process order of disinfection liquid discharge mode. It is explanatory drawing which shows the process sequence of the disinfection liquid preparation mode which prepares a disinfection liquid after supplying a dilution liquid. It is a flowchart which shows the process sequence of the disinfection liquid preparation mode which prepares a disinfection liquid after supplying a dilution liquid. It is explanatory drawing which shows the process sequence which supplies a dilution liquid using a bottle washing nozzle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Endoscope 28 Endoscope washing | cleaning disinfection apparatus 31 Cleaning tank 37 Bottle accommodating part 38 Bottle unit 39 1st bottle 40 2nd bottle 86 Disinfection liquid 87 Disinfection liquid tank 108 1st bottle attaching part 110 Concentrated liquid injection path 112 Bottle washing Nozzle 113 Bottle cleaning path 118 Concentrated liquid sensor 119 Bottle cleaning liquid sensor 132 Concentrated liquid 136 Bottle cleaning liquid 140 Dilution path 142 Diluting liquid sensor 144 Diluting liquid 150 Lid

Claims (5)

In an endoscope cleaning / disinfecting apparatus for preparing a predetermined concentration of a disinfectant solution by supplying a predetermined amount of a disinfectant solution and a predetermined amount of a diluting solution for diluting the concentrate to a disinfectant tank and mixing them.
And concentrate supply means for supplying the concentrate to the disinfectant solution tank from the bottle stored the concentrate,
In the disinfectant tank , a concentrated liquid sensor that is disposed at a position corresponding to the liquid level of the concentrated liquid of a predetermined amount and detects the liquid level of the concentrated liquid supplied from the concentrated liquid supply means ;
When the liquid level of the concentrated liquid is detected by the concentrated liquid sensor , the bottle cleaning liquid is supplied into the bottle to clean the inside of the bottle, and the bottle cleaning liquid that has been cleaned in the bottle is used as the dilution liquid. As a bottle cleaning means to be supplied into the disinfectant tank and mixed with the concentrate ,
In the disinfecting liquid tank, the disinfecting liquid tank is disposed at a position corresponding to the liquid level of the disinfecting liquid in which a predetermined amount of the concentrated liquid and a predetermined amount of the diluted liquid are mixed, and the concentrated liquid and the bottle cleaning liquid are mixed. A bottle cleaning liquid sensor for detecting the liquid level of the liquid ,
By the bottle cleaning liquid sensor, wherein when the liquid level of the concentrate and said bottle washing solution is mixed liquid is detected, the endoscope is characterized in that a control means for stopping the bottle cleaning means Cleaning disinfection device. Before the concentrate is supplied to the disinfectant solution tank, a diluent supply means for supplying a pre KiNozomi dilution liquid to the disinfectant solution tank,
In the disinfectant tank are disposed at a position corresponding to the liquid level of the diluent predetermined amount, Bei a diluent sensor for detecting the liquid level of the diluting liquid supplied from the diluting solution supplying means Eteori ,
2. The endoscope according to claim 1 , wherein when the liquid level of the diluent is detected by the diluent sensor , the control unit stops the supply of the diluent by the diluent supply unit. Cleaning disinfection device. The diluent supply means includes a lid for opening and closing a concentrate injection path for supplying the concentrate from the bottle to the disinfectant tank, and the bottle in the concentrate injection path with the lid closed. The bottle cleaning means for supplying a cleaning liquid and supplying the bottle cleaning liquid bounced off by the lid into the disinfecting liquid tank as the dilution liquid ;
3. The endoscope cleaning according to claim 2 , wherein when the liquid level of the bottle cleaning liquid is detected by the diluent sensor, the controller stops the supply of the diluent by the bottle cleaning means. Disinfection equipment. Disinfecting solution for endoscope cleaning / disinfecting apparatus for preparing a disinfecting solution having a predetermined concentration by supplying a disinfecting solution tank with a predetermined amount of disinfecting solution concentrate and a predetermined amount of diluting solution for diluting the concentrated solution. In the preparation method,
The concentrate supply means, a step of supplying the concentrate to the disinfectant solution tank from the bottle stored the concentrate,
Detecting the liquid level of the concentrated liquid supplied from the concentrated liquid supply means by a concentrated liquid sensor disposed in a position corresponding to the liquid level of the concentrated liquid in a predetermined amount in the disinfectant liquid tank; ,
When the liquid level of the concentrated liquid is detected by the concentrated liquid sensor, the bottle cleaning liquid is supplied to the bottle by the bottle cleaning means to clean the inside of the bottle, and the bottle cleaning liquid has been cleaned. Supplying the liquid as the diluent into the disinfectant tank and mixing with the concentrated liquid ,
In the disinfectant tank, a bottle cleaning liquid sensor disposed at a position corresponding to the liquid level of the disinfectant liquid in which a predetermined amount of the concentrated liquid and a predetermined amount of the diluted liquid are mixed is used. Detecting the liquid level of the liquid mixed with the bottle cleaning liquid;
And a step of causing the control means to stop the bottle cleaning means when the bottle cleaning liquid sensor detects the liquid level of the liquid in which the concentrated liquid and the bottle cleaning liquid are mixed. Disinfection solution preparation method for mirror cleaning disinfection device. Before the step of supplying the concentrate to the disinfectant tank from the bottle storing the concentrate by the concentrate supply means,
Supplying the diluent into the disinfectant tank by a diluent supply means;
Detecting the liquid level of the dilution liquid supplied from the dilution liquid supply means by a dilution liquid sensor disposed at a position corresponding to the liquid level of the predetermined volume of the dilution liquid in the disinfecting liquid tank; ,
5. The endoscope cleaning and disinfection according to claim 4 , further comprising a step of causing the control means to stop the dilution liquid supply means when the liquid level of the dilution liquid is detected by the dilution liquid sensor. Disinfectant preparation method for the device.

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