KR20090113192A - Esdoscope washer disinfector and preparation method of disinfection liquid for the same - Google Patents

Abstract

PURPOSE: An endoscope disinfecting device and a method for preparing antiseptic solution are provided, which can reduce bad smell of the peracetic acid in exchange of the antiseptic solution. CONSTITUTION: An endoscope disinfecting device comprises a diluent feeding unit which supplies the diluent(132) to the antiseptic solution tank; a first detection unit which detects that diluent of the predetermined amount is supplied to the antiseptic solution tank; a concentrate feeding unit which supplies concentrate to the antiseptic solution tank(87) from the bottle(39) which stores the concentrate of the antiseptic solution; and a control unit which supplies the concentrate to the antiseptic solution tank.

Description

Endoscopic cleaning disinfection device and disinfectant preparation method of endoscope cleaning disinfection device {ESDOSCOPE WASHER DISINFECTOR AND PREPARATION METHOD OF DISINFECTION LIQUID FOR THE SAME}

The present invention relates to an endoscope cleaning disinfection device for supplying a concentrated solution of a disinfectant solution from a bottle to a disinfectant tank, and mixing the concentrate and diluent in the disinfectant tank to prepare a disinfectant solution of a predetermined concentration, and a method for preparing a disinfectant solution for an endoscope cleaner.

Endoscopy is known as a medical device used for examination and treatment of the body cavity of a living body. The endoscope has an insertion portion inserted into the body cavity. The insertion portion is a flexible rod-shaped body, and includes a photographing portion for photographing the body cavity and various channels such as a forceps channel through which the treatment instrument is inserted. In the endoscope after use, body fluid and dirt adhere to the outer surface of each insertion part and each channel. Pathogens and viruses contained in body fluids and dirt cause infection in the hospital, so the endoscopes after use are always cleaned and disinfected.

In order to efficiently clean and disinfect the endoscope, an endoscope cleaning and disinfection device is used. The endoscope cleaning and disinfecting apparatus stores the used endoscope in a washing tank and automatically performs various processes such as a washing step and a disinfection step. In the cleaning process, water, detergent, and the like are sprayed onto the endoscope to wash out the external surface and body fluids and dirt attached to each channel. The disinfection process supplies a predetermined amount of disinfectant solution from the disinfectant tank installed in the apparatus into the cleaning tank, and immerses the endoscope in the disinfecting solution stored in the cleaning tank. Pathogens and viruses that have not been removed in the cleaning process are removed by disinfectant solution or pathogenicity is lost.

As the disinfectant, for example, high levels of disinfectants such as glutaraldehyde, orthophthalaldehyde and peracetic acid are used. Conventionally, glutaraldehyde has been used abundantly, but now it is converted to peracetic acid which has a high disinfection effect and little adverse effect on a human body.

Endoscopic cleaning disinfection devices are known which supply a concentrated solution of peracetic acid (hereinafter referred to as a concentrate) and a diluent (for example, water) and a mixture of both to automatically prepare a disinfectant of a predetermined concentration in a disinfectant tank (for example, See, for example, Patent Document 1). The concentrate is supplied in a dedicated bottle made of plastic. The concentrate is, for example, 6% of the peracetic acid and contains 10% or more of hydrogen peroxide, and thus is treated as a mineral.

The bottle filled with the concentrate is attached to the bottle attachment part installed in the endoscope cleaning disinfection apparatus. The concentrate flows through the concentrate injection passage connecting the bottle attachment portion and the sanitizer tank, and is supplied to the sanitizer tank. A predetermined amount of water is supplied as a diluent to the disinfectant tank supplied with the concentrate, and a disinfectant of a predetermined concentration is produced. The liquid level sensor which detects the liquid level position of a concentrate and a dilution liquid is provided in the disinfectant tank.

The disinfectant tank is formed in accordance with the shape of the empty space in the casing in order to reduce the size of the endoscope cleaning and disinfection device. Blow molding with plastics, for example, is used to form the disinfectant tank into a complicated shape that fits into the empty space. In order to prevent deterioration of the packing of the disinfectant tank and the liquid level sensor by the disinfectant solution, plastics such as polypropylene (PP) and polyethylene (PE), which have high resistance to peracetic acid, are used in the disinfectant tank and the packing.

[Patent Document 1] Japanese Patent Publication No. 3537370

Disinfectant tanks or packings formed using PP or PE are resistant to peracetic acid. However, by contacting with a high concentration of peracetic acid several times, the disinfectant tank and packing also deteriorate. In addition, crystals may be precipitated in the disinfectant tank by the concentrate.

The conventional endoscope cleaning disinfection apparatus did not stir the concentrate and diluent supplied in the disinfectant tank. For this reason, the disinfectant solution immediately after being prepared in the disinfectant solution tank has a problem that the concentration distribution becomes uneven.

Peracetic acid and its concentrates have a very bad odor. Since the bottle and the bottle attachment portion are hermetically and liquid tightly coupled, the odor of the concentrate remaining in the bottle does not leak out of the endoscope cleaning disinfection device while the bottle is attached to the bottle attachment portion. However, if the bottle is removed from the bottle attachment portion at the time of replacing the disinfectant solution, the odor of the concentrate remaining in the bottle and in the bottle attachment portion leaks out, and the working environment is deteriorated.

An object of the present invention is to prevent deterioration of a disinfectant tank or the like caused by a concentrated liquid and precipitation of crystals. It is also an object of the present invention to make the concentration distribution of the disinfectant solution immediately after preparation uniform, and to reduce the odor of peracetic acid leaking out of the bottle during the exchange of the disinfectant solution.

The endoscope cleaning and disinfecting apparatus of the present invention comprises a diluent solution supply means for supplying a diluent to a disinfectant tank, a first detection means for detecting that a predetermined amount of diluent is supplied to the disinfectant tank, and a bottle containing a concentrated solution of the disinfectant solution. It is provided with a concentrate supply means for supplying a concentrate to the furnace. Moreover, when a dilution liquid is detected by a 1st detection means, the dilution liquid supply means is stopped and the control means which supplies a concentrate liquid from the concentrate liquid supply means to the said disinfecting liquid tank is provided.

The second detection means for detecting that the predetermined amount of concentrated liquid is supplied into the disinfectant tank may be provided, and the third detecting means for detecting that the predetermined amount of diluent is again supplied into the disinfectant tank. In this case, the control means operates the diluent supplying means when the concentrate is detected by the second detecting means to supply the diluent into the disinfectant tank, and stops the diluent supplying means when the diluent is detected by the third detecting means. It is preferable.

Second detection means for detecting that a predetermined amount of concentrated liquid has been supplied into the disinfectant tank, bottle cleaning means for supplying the diluent into the bottle to clean the bottle, and diluent flowing into the disinfectant tank after washing in the bottle reaches a predetermined amount. You may be provided with the 3rd detection means to detect. In this case, it is preferable that the control means operates the bottle cleaning means when the concentrate is detected by the second detection means, and stops the bottle cleaning means when the dilution liquid is detected by the third detection means.

Diluents and concentrates in the disinfectant tank may be circulated using disinfectant solution supply means for supplying the disinfectant solution in the disinfectant tank to the cleaning tank and disinfectant recovery means for returning the disinfectant in the cleaning tank to the disinfectant tank.

The disinfecting liquid preparation method of the endoscope cleaning disinfection apparatus of this invention is equipped with the process of supplying a predetermined amount of dilution liquid in a disinfecting liquid tank, and the process of supplying a concentrate liquid into a disinfecting liquid tank from the bottle which stored the concentrate of the disinfecting liquid.

Another disinfectant preparation method includes a step of detecting that a predetermined amount of concentrate is supplied into the disinfectant tank, and a step of supplying a predetermined amount of diluent again into the disinfectant tank when the concentrate is detected.

Another method for preparing a disinfectant solution includes a step of detecting that a predetermined amount of concentrate has been supplied into the disinfectant tank, a process of supplying and diluting the diluent into the bottle when the concentrate is detected, and a diluent flowing into the disinfectant tank after washing in the bottle. The process of detecting that a predetermined amount has been reached and stopping washing of a bottle is provided.

And another disinfectant preparation method includes a step of circulating the diluent and concentrate in the disinfectant tank by using disinfectant supply means for supplying the disinfectant in the disinfectant tank to the cleaning tank and disinfectant recovery means for returning the disinfectant in the cleaning tank to the disinfectant tank. Equipped.

According to the present invention, since the diluent is supplied into the disinfectant tank and the concentrate is supplied thereafter, the concentrate does not directly contact the disinfectant tank or the like. Thereby, deterioration of the disinfectant tank etc. by a concentrated liquid and precipitation of a crystal | crystallization can be prevented. In addition, since the choice of materials for the disinfectant tank and the like becomes wider, the cost reduction and the moldability of the disinfectant tank and the like can also be expected.

In addition, since the diluent is supplied again after the concentrate is supplied into the disinfectant tank, the concentrate and the dilution can be stirred. Moreover, since the inside of a bottle is wash | cleaned using a dilution liquid, when a bottle is removed, odor of a concentrated liquid can be prevented from generating in a bottle.

In addition, the disinfectant solution having a uniform concentration distribution can be prepared by circulating and agitating the dilution liquid and the concentrated liquid in the disinfectant tank and the washing tank.

The endoscope 10 shown in FIG. 1 is an example of the endoscope which wash | cleans and disinfects with the endoscope washing | cleaning disinfection apparatus of this invention. The endoscope 10 includes an insertion unit 11 inserted into the body cavity of the living body, and an operation unit 12 for operating the insertion unit 11.

The insertion portion 11 is a rod-shaped body having a circular cross section and has flexibility. At the distal end of the insertion section 11, an illumination unit for illuminating the body cavity and a photographing unit (not shown) for photographing the body cavity are formed. In the insertion part 11, the air supply / transmission channel 15 and the forceps channel 16 which one end is exposed from the front-end | tip of the insertion part 11 are formed. The suction channel 17 is connected to the forceps channel 16.

The operation part 12 is provided with the forceps sphere 20 to which the forceps channel 16 is connected, an air supply / transmission button 21, and a suction button 22. The forceps sphere 20 is fitted with a forceps sphere cap 23 to be removed at the time of use. The air supply / water supply button 21 and the suction button 22 are mounted so as to be detachably attached to the mounting opening 12a to which the air supply / transport channel 15 is connected and the mounting opening 12b to which the suction channel 17 is connected. It is. The forceps sphere cap 23, the air supply / water supply button 21, and the suction button 22 are separated from the operation unit 12 at the time of washing the endoscope 10. FIG.

In the universal cord 25 and the connector part 26 connected to the operation part 12, the air supply / transmission channel 15 and the suction channel 17, and the wiring of the illumination part and the imaging part are inserted. The connector portion 26 is provided with a contact portion for connecting the wiring to the light source device or the video processor. At the time of washing the endoscope 10, a waterproof cap 27 (see Fig. 3) that hides and seals the contact portion is mounted to the connector portion 26.

The endoscope washing and disinfecting apparatus (hereinafter, referred to as an apparatus) 28 shown in FIG. 2 includes a box-shaped apparatus main body 30. On the upper surface of the apparatus main body 30, the washing tank 31 in which the endoscope 10 after use is accommodated is formed. The washing tank 31 is a water tank with an open top, and is formed of, for example, a metal plate having excellent heat resistance, corrosion resistance, and the like of stainless steel.

The operation panel 33 and the display panel 34 are disposed in front of the upper surface of the apparatus main body 30. The operation panel 33 is provided with a number of buttons for instructing various settings regarding cleaning and disinfection of the endoscope 10, and instructing start or stop of cleaning and disinfection. The liquid crystal display (LCD) is used for the display panel 34, for example, and various setting screens, the remaining time of each process, the warning message at the time of a trouble occurrence, etc. are displayed.

The front face of the apparatus main body 30 is provided with the bottle accommodating part 37 which can be opened and closed freely by the door 36. As shown in FIG. The bottle unit 38 is accommodated in the bottle accommodating portion 37. The bottle unit 38 is comprised from the 1st bottle 39 in which the concentrate of peracetic acid was sealed, and the 2nd bottle 40 in which the buffer was sealed. The 1st bottle 39 and the 2nd bottle 40 are tied and fixed by the strip | belt-shaped 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 sphere 39b formed on the upper surface of the bottle body 39a, and a lid portion 39c formed in the sphere 39b. Has The concentrated liquid is stored in the bottle main body 39a. The bent part 39b communicates with the bottle main body 39a, and can concentrate the concentrated liquid in the bottle main body 39a to the outside through the bent part 39b. The lid portion 39c is made of a thin plate-like body, and closes the bent portion 39b so that the concentrated liquid does not leak. The first bottle 39 is formed of a plastic having resistance to a concentrated solution of peracetic acid.

The 1st bottle 39 is accommodated in the bottle accommodating part 37 in the state which obliquely laid so that the part 39b may face downward. The spherical portion 39b is eccentric with respect to the central axis of the bottle body 39a in order to discharge the liquid in the first bottle 39 to the outside without leaving by its own weight. Specifically, when the first bottle 39 is laid down, the inner surface of the sphere 39b becomes one side (to be located in the same plane) with respect to the inner surface of the side surface 39d of the bottle body 39a which becomes the bottom surface. have. 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 accommodating part 37, the tank accommodating part 45 which can open and close freely by the door 44 is formed. In the tank accommodating part 45, the detergent tank 46 and the alcohol tank 47 are accommodated. The detergent tank 46 stores detergents used for cleaning the endoscope 10. The alcohol tank 47 stores the alcohol flowing in each channel after cleaning and disinfecting the endoscope 10.

The top cover 49 which opens and closes the washing tank 31 is formed in the upper surface of the apparatus main body 30. The top cover 49 is a substantially rectangular plate-shaped body formed of plastic, for example, and one side is axially supported by the hinge 50 formed on the upper surface of the apparatus main body 30. The top cover 49 is closed at the time of washing and disinfecting the endoscope 10 to cover the upper portion of the washing tank 31. The outer periphery of the top cover 49 is provided with a packing 49a which seals the inside of the cleaning tank 31 when it is closed. The upper surface of the top cover 49 is made of a transparent and visible window, so that the state of washing or disinfecting can be directly observed. In addition, although not shown in detail, the top mechanism 49 is provided with the locking mechanism for locking in the closed position.

In the inclination part 31a formed in the edge part of the washing tank 31, the supply port 52 which supplies the liquid used for the washing | cleaning and disinfection of the endoscope 10 in the washing tank 31 is formed. The feed port 52 is provided with a water supply nozzle 53 that is bent toward the cleaning tank 31, a detergent supply nozzle 54, and a disinfectant solution supply nozzle 55. These nozzles 53 to 55 are arranged at positions higher than the liquid level of the liquid stored in the washing tank 31. The top cover 49 is provided with a projection 49b for receiving 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 disinfecting liquid supply nozzle 55 supplies the disinfecting liquid stored in the disinfecting liquid tank into the cleaning tank 31. Body fluids and dirt adhered to the endoscope 10 after use are washed out by a washing solution in which water and detergent are mixed. Pathogens or viruses that are not washed out by the cleaning solution are removed by the disinfectant solution or the pathogenicity is lost.

As shown in FIG. 3, the channel washing port 57 is formed in the inner side surface 31b of the washing tank 31. As shown in FIG. The channel cleaning port 57 is used for cleaning and disinfection in the air supply / transmission channel 15, the forceps channel 16, and the suction channel 17 of the endoscope 10 shown in FIG. 1. The channel cleaning port 57 is provided with a coupler 58 for an air supply / transmission channel, a coupler 59 for a suction channel, and a coupler 60 for a forceps channel.

As for the endoscope 10 accommodated in the washing tank 31, the mounting holes 12a and 12b and the forceps sphere 20 are connected to each coupler 58-60 by flexible tubes 62-64. Gases and liquids, such as water, a cleaning liquid, a disinfecting liquid, alcohol, and compressed air, are supplied from each of the couplers 58 to 60 into the air supply / water supply channel 15, the forceps channel 16, and the suction channel 17.

The airtight test port 65 used for the airtight test of the endoscope 10 is formed in the inner side surface 31c of the washing tank 31. As shown in FIG. The gas tight test port 65 is provided with a tube coupler 65a for supplying compressed air. The tube coupler 65a is equipped with a tube having flexibility. The tube is connected to the waterproof cap 27 mounted on the connector portion 26. The 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 washing basket 68 is attached to the center of the bottom surface 31d of the washing tank 31. The small object washing basket 68 is a circular basket with an upper opening, for example, the air supply / water supply button 21, the suction button 22, and the forceps cap (separated from the operation unit 12 of the endoscope 10). 23) Small parts are accommodated. The waste liquid port 69 is formed in the corner part of the bottom surface 31d. The waste liquid port 69 discharges the used water, the washing liquid, and the disinfecting liquid from the washing tank 31.

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

A water supply passage 74 through which water, a washing liquid, and a disinfecting liquid flows is connected to the water supply nozzle 53. 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 inlet port of the electric three-way valve 75.

The water supply passage 76 is exposed to the outside of the apparatus main body 30 and is connected to the tap of the tap water. The water supply path 76 is provided with a solenoid valve 78 and a water filter (WF) 79 from the side connected to the tap. The solenoid valve 78 switches the supply / stop of tap water to the water supply passage 76. WF 79 captures foreign substances or bacteria contained in tap water. The electric 3-way valve 75 connects the water supply passage 74 and the water supply passage 76 when water is supplied into the washing tank 31.

The detergent supply passage 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 detergents (for example, liquid enzyme detergents; 82) are stored. A water pump (hereinafter referred to 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 solution supply passage 85 is connected to the disinfectant solution supply nozzle 55. The other end of the disinfecting liquid supply passage 85 is connected to the disinfecting liquid tank 87 in which the disinfecting liquid 86 is stored. The disinfectant solution supply passage 85 is provided with a WP 88 which sucks the disinfectant solution 86 and discharges it from the disinfectant solution supply nozzle 55.

The disinfectant tank 87 is molded by blow molding using polypropylene (PP) having a resistance to peracetic acid. The use of blow molding is for forming the disinfectant tank 87 in a complicated shape in accordance with the empty space in the apparatus main body 30, and to impart a predetermined strength. The lower surface of the disinfecting liquid tank 87 is provided with a discharge port 90 through which the used disinfecting liquid 86 is discharged. A discharge passage 91 drawn out of the apparatus main body 30 is connected to the discharge port 90. The solenoid valve 92 is formed in the discharge path 91.

The waste liquid passage 94 is connected to the waste liquid port 69. The waste liquid passage 94 branches into the first waste liquid passage 95 and the second waste liquid passage 96 on the downstream side. The first waste liquid passage 95 discharges the washing liquid and water used in the washing of the endoscope 10 out of the apparatus main body 30 by the WP 97. The second waste liquid passage 96 returns the disinfecting liquid 86 used for disinfecting the endoscope 10 to the disinfecting liquid tank 87. Since the disinfecting effect is not lost by several uses, the disinfecting solution 86 is returned to the disinfecting liquid tank 87 and used repeatedly. The first waste liquid passage 95 and the second waste liquid passage 96 are switched by opening and closing of the solenoid valves 98, 99 formed in each.

The dilution furnace 100 is connected to the second waste liquid path 96 on the downstream side of the solenoid valve 99. The other end of the dilution furnace 100 is connected to the water supply passage 76 on the downstream side of the WF 79. The dilution furnace 100 supplies water to the disinfectant tank 87 as a diluent for diluting the concentrate. The dilution furnace 100 is provided with a solenoid valve 101 for controlling the supply of the dilution liquid.

The circulation path 102 is also connected to the waste liquid port 69. The circulation path 102 is provided with a WP 103 that sucks the liquid in the cleaning tank 31. The circulation path 102 branches into the first circulation path 104 and the second circulation path 105 on the downstream side. The first circulation path 104 is connected to the other inlet port of the electric three-way valve 75. The electric 3-way valve 75 connects the 1st circulation path 104 and the liquid feed path 74, and wash | cleans the liquid suctioned from the inside of the washing tank 31 by the WP 103 with the washing tank 53 ( 31) Circulate by ejecting into.

The second circulation path 105 is connected to the air / transmission 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 inside of the washing tank 31 by the WP 103 is supplied into each channel 15-17 of the endoscope 10 by each coupler 58-60.

In addition to the second circulation path 105, the channel cleaning port 57 is connected to an air blower that blows into each channel to remove water droplets, an alcohol supply path that flows alcohol into each channel, and is dried. In addition, in order to prevent the trouble of drawing, in FIG. 4, an air supply path, an alcohol supply path, etc. are not shown.

The bottle accommodating part 37 is arrange | positioned in the vicinity of the disinfecting liquid tank 87. As shown in FIG. The bottle accommodating part 37 has the bottom face part 107 in which the bottle unit 38 is mounted. The bottom surface portion 107 is inclined to lower toward the inside of the apparatus main body 30. The bottle unit 38 is inclined so that the bent part 39b may face downward, and the side surface 39d is mounted in the bottom surface part 107. The first bottle attachment portion 108 is formed at the bottom of the bottom surface portion 107. The first bottle attachment portion 108 has a shape of a cap that is airtightly and liquid tightly fitted to the outside of the sphere 39b of the first bottle 39.

The first bottle attachment part 108 is equipped with a concentrate injection passage 110 formed on the upper part of the disinfectant tank 87. The concentrate injection passage 110 consists of a pipe communicated in the disinfectant tank 87, and a sharp tip 110a protrudes into the first bottle attachment 108. The concentrated liquid injection passage 110 presses the lid portion 39c with the tip portion 110a when the bent portion 39b of the bottle unit 38 is press-fitted into the first bottle attachment portion 108, thereby tearing off the first bottle 39. ) Is inserted into the.

Although not shown in detail, the bottle accommodating portion 37 is also provided with a second bottle attachment portion for the second bottle 40. The second bottle attachment portion has the same shape as the first bottle attachment portion 108. A buffer injection path formed in the disinfectant tank 87 in parallel with the concentrate injection path 110 is connected to the second bottle attachment portion. The buffer is supplied into the disinfectant tank 87 through the buffer injection passage simultaneously with the concentrate.

In the bottle accommodating part 37, the bottle sensor 116 which detects the bottle unit 38 is provided. The bottle sensor 116 detects the bottle unit 38 when the first bottle 39 and the second bottle 40 are pressed into the first bottle attaching portion 108 and the second bottle attaching portion.

In the disinfecting liquid tank 87, a dilution liquid sensor 118 and a concentrate liquid sensor 119 are provided which detect and turn on the liquid level of the liquid. The dilution liquid sensor 118 and the concentrate liquid sensor 119 are mounted into the disinfecting liquid tank 87 from the outside of the disinfecting liquid tank 87 using, for example, holes formed in the disinfecting liquid tank 87. Between the disinfectant tank 87, the diluent sensor 118, and the concentrate sensor 119, a packing is attached to prevent the leakage of the disinfectant 86. In this packing, PP, polyethylene (PE), or the like having resistance to peracetic acid is used.

The dilution sensor 118 detects the liquid level of the diluent supplied to the disinfectant tank 87 by the dilution furnace 100. The amount of the diluent detected by the dilution sensor 118 is an amount capable of diluting the prescribed amount of the concentrate and the buffer supplied from the bottle unit 38 to a predetermined concentration. The concentrate sensor 119 detects a prescribed amount of the concentrate and the buffer to be supplied from the bottle unit 38. The amount of the concentrate and the buffer detected by the concentrate sensor 119 is actually the amount of the entire disinfectant 86 including the diluent.

As shown in FIG. 5, the apparatus 28 executes a CPU 122 that collectively controls the entire apparatus, a ROM 123 in which a control program and various data are stored, and a control program read from the ROM 123. RAM 124, which is an area, is provided. Sensors, such as the liquid level sensor 66, the temperature sensor 72, the bottle sensor 116, the dilution liquid sensor 118, and the concentrate liquid sensor 119, are connected to the CPU 122. As shown in FIG. The CPU 122 is also connected to an LCD driver 125 for driving the display panel 34, a valve driver 126 for driving each solenoid valve, a motor driver 127 for driving the electric three-way valve 75, and the like. It is. The WP driver 128 for driving each WP, the heater driver 129 for driving the rubber heater 71, and the like are also connected to the CPU 122.

The apparatus 28 is equipped with several operation modes, such as a washing disinfection mode, a disinfecting liquid preparation mode, and a disinfecting liquid discharge mode. Each mode is selected according to the operation of 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. 6.

When the apparatus 28 is set (S1) to the disinfectant preparation mode by the operation of the operation panel 33, the CPU 122 is based on the signals of the diluent sensor 118 and the concentrate sensor 119, and the disinfectant tank 87 Check the presence or absence of the disinfectant solution 86 in the) (S2). When the disinfecting liquid 86 is stored in the disinfecting liquid tank 87, the CPU 122 opens the solenoid valve 92 to discharge the disinfecting liquid 86 in the disinfecting liquid tank 87 (S3). In addition, it is preferable that a predetermined amount of diluent is supplied into the disinfectant tank 87 after the disinfectant 86 is discharged to clean the disinfectant tank 87.

When there is no disinfectant 86 in the disinfectant tank 87, as shown in FIG. 7A, the CPU 122 opens the solenoid valves 78 and 101 to dilute the liquid 132 in the disinfectant tank 87. Supply (S4). The dilution sensor 118 detects and turns on the liquid level when the dilution liquid 132 supplied in the disinfecting liquid tank 87 reaches a predetermined amount (S5). The CPU 122 closes the solenoid valves 78 and 101 when the dilution liquid sensor 118 is turned on to stop the supply of the dilution liquid 132 (S6).

The CPU 122 allows the new bottle unit 38 to be mounted when the dilution sensor 118 is turned on (S7). For example, it is displayed that the new bottle unit 38 can be mounted on the display panel 34.

As shown in FIG. 7B, the bottle unit 38 storing the concentrated liquid 134 and the buffer is bottled from the bent 39b side in a state in which the bent portion 39b is laid obliquely downward. It is accommodated in the accommodation portion 37. The bottle unit 38 is mounted on the bottom surface portion 107.

As shown in FIG. 7C, the bottle unit 38 slides on the bottom surface portion 107, and the spherical portion 39b is press-fitted into the first bottle attachment portion 108. The tip portion 110a of the concentrated liquid injection passage 110 is inserted into the mouth portion 39b, and the lid portion 39c is pressed and torn. Since the first bottle attachment portion 108 is fitted to the airtight and liquid-tight seal on the outer circumference of the bent portion 39b, the odor of the concentrate 134 does not leak from the first bottle 39. Although not described in detail, the second bottle 40 is also fitted to the second bottle attaching portion similarly to the first bottle 39.

The concentrate 134 and the buffer in the bottle unit 38 flow into the disinfectant tank 87 through the concentrate injection passage 110 and the buffer injection passage. The concentrate sensor 119 detects and turns on the liquid level of the sanitizing solution 86 in which the concentrate 134 and the buffer and the diluent 132 are mixed to reach a predetermined concentration (S8). In the disinfecting liquid tank 87, a disinfecting liquid 86 having a predetermined concentration is prepared.

The bottle sensor 116 detects and turns on the bottle unit 38 accommodated in the bottle accommodating part 37. In addition, the CPU 122 measures the predetermined time after the bottle sensor 116 is turned on. When the concentrated liquid sensor 119 is not turned on within a predetermined time, an error process is performed (S9). This is because, when the concentrated liquid sensor 119 is not turned on within a predetermined time, the bottle unit 38 or the like having a small capacity such as the empty bottle unit 38 or the concentrated liquid 134 may be set. Further, as a cause of the error in which the concentrate 134 or the like is not detected, a liquid supply miss in which the concentrate 134 or the like leaks out of the disinfectant tank 87 may be considered. As the error processing, for example, an error message is displayed on the display panel 34.

According to this embodiment, since the concentrated liquid 134 does not directly contact the packing of the disinfectant tank 87 and each sensor, deterioration of the disinfectant tank 87 and the packing can be prevented. In addition, precipitation of crystals in the disinfectant tank 87 by the concentrate 134 can be prevented. Since the range of material selection of the disinfectant tank 87 and the packing becomes wider, cost reduction and improvement in moldability can also be expected.

Next, the cleaning disinfection mode in which the endoscope 10 is cleaned and disinfected will be briefly described with reference to FIG. 8. When the used endoscope 10 is accommodated in the cleaning tank 31 and the cleaning disinfection mode by the operation panel 33 is set (S10), the cleaning process (S11) is started.

The CPU 122 drives the solenoid valve 78, the electric three-way valve 75, the WP 83, and the like, supplies the predetermined amount of water and the detergent 82 into the washing tank 31, and supplies the rubber heater ( 71). The CPU 122 sucks the cleaning liquid formed by mixing the water and the detergent 82 with the WP 102, circulates with the circulation paths 102, 104, 105, and the like, and moves the endoscope 10 from the water supply nozzle 53. Spray it to flush out dirt attached to the outer surface. Moreover, a washing | cleaning liquid flows also in each channel of the endoscope 10, and it wash | cleans. After completion of the washing process, the washing liquid is discharged through the waste liquids 94 and 95.

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

After the rinsing step, the disinfection step 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 antiseptic solution 86 is heated by the rubber heater 71. As in the washing step and the rinsing step, the disinfecting solution 86 circulates in the respective channels of the washing tank 31 and the endoscope 10 to remove pathogens or viruses that have not been washed out in the washing step or lose pathogenicity. After the disinfection process is finished, the disinfectant solution 86 is returned to the disinfectant tank 87 through the waste liquids 94 and 96.

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

In the said embodiment, although the liquid is supplied to the disinfecting liquid tank 87 in order of the dilution liquid 132 and the concentrated liquid 134, the disinfecting liquid 86 is prepared, You may supply the dilution liquid 132 in 2 times. Hereinafter, embodiment which supplies the dilution liquid 132 before and after supply of the concentrate liquid 134 is described.

As shown to FIG. 9 (A), in this embodiment, the dilution liquid sensor 118, the concentrate liquid sensor 119, and the disinfecting liquid sensor 140 are formed in the disinfecting liquid tank 87 from below. The dilution sensor 118 detects the liquid level of the dilution liquid 132 initially supplied. The concentrate sensor 119 detects the supplied diluent 132 and the liquid level at which the concentrate 134 and the buffer are mixed. The distance between the dilution sensor 118 and the concentrate sensor 119 is set in accordance with the prescribed amounts of the concentrate 134 and the buffer. The antiseptic solution sensor 140 detects the liquid level of the diluent 132 supplied again after the supply of the concentrate 134 and the buffer, that is, the liquid level of the antiseptic solution 86 after the adjustment.

According to the flowchart of FIG. 6 and FIG. 10, the disinfecting liquid preparation mode by the said embodiment is demonstrated. The CPU 122 performs the processing of S1 to S6. As shown in FIG. 9A, a predetermined amount of diluent 132 is supplied into the disinfectant tank 87. Next, the CPU 122 performs a process of S7. As shown in FIG. 9 (B), the concentrated liquid 134 and the buffer of a prescribed amount are supplied into the disinfecting liquid tank 87. The concentrate sensor 119 detects a liquid level on which the dilution 132, the concentrate 134, and the buffer are mixed (S8).

As shown in FIG. 9C, when the concentrated liquid sensor 119 is turned on, the CPU 122 opens the solenoid valves 78 and 101, and supplies the diluent 132 back into the disinfectant tank 87. (S20). The antiseptic solution sensor 140 detects and turns on the liquid in which the dilution 132, the concentrate 134, and the buffer are mixed (S21). When the disinfecting liquid sensor 140 is turned on, the CPU 122 closes the solenoid valves 78 and 101 to stop the supply of the dilution liquid 132 (S22). Thereby, the disinfecting liquid 86 of predetermined concentration is produced in the disinfecting liquid tank 87.

According to this embodiment, according to the flow of the dilution liquid 132 supplied after supply of the concentrate liquid 134, the dilution liquid 132 and the concentrate liquid 134 can be stirred. Thereby, since the concentration distribution of the disinfecting solution 86 becomes uniform, the disinfection effect of the stable endoscope 10 can be obtained. In addition, it is preferable that the supply amount of the dilution liquid 132 initially supplied and the dilution liquid 132 supplied later is determined so that the deterioration prevention and stirring effect of the disinfectant tank 87 etc. may be balanced and obtained.

Peracetic acid and its concentrate 134 have a very bad odor. For this reason, when the bottle unit 38 was removed from the bottle accommodating part 37, there existed a problem that a working environment deteriorated due to the odor of the concentrate liquid 134 remaining in the 1st bottle 39. FIG. In order to solve this problem, you may form the structure which sprays and wash | cleans water in the 1st bottle 39. FIG. In addition, since the water which wash | cleaned the inside of the 1st bottle 39 flows into the disinfecting liquid tank 87 through the concentrate injection path 110, it is preferable to use this water as a diluent liquid. Hereinafter, embodiment which wash | cleans in the 1st bottle 39 is described.

As shown to FIG. 11 (A), the bottle washing nozzle 145 is formed in the concentrate injection path 110. As shown to FIG. The bottle washing nozzle 145 is connected to the water supply passage 76 by the bottle washing passage 146. The solenoid valve 147 is formed in the bottle washing furnace 146.

According to the flowchart of FIG. 6 and FIG. 12, the disinfecting liquid preparation mode by the said embodiment is demonstrated. The CPU 122 performs the processing of S1 to S6. As shown in FIG. 11A, a predetermined amount of diluent 132 is supplied into the disinfectant tank 87. Next, the CPU 122 performs a process of S7. As shown in FIG. 11 (B), the concentrated liquid 134 and the buffer of a prescribed amount are supplied into the disinfecting liquid tank 87. The concentrate sensor 119 detects and turns on the liquid level at which the diluent 132, the concentrate 134, and the buffer are mixed (S8).

As shown in FIG. 11C, the CPU 122 opens the solenoid valves 78 and 147 when the concentrated liquid sensor 119 is turned on. The bottle washing liquid 149 which is the same water as the dilution liquid 132 is sprayed into the first bottle 39 by the bottle washing nozzle 145 to wash the concentrated liquid 134 remaining in the first bottle 39 (S25). . The bottle washing liquid 149 flows into the disinfectant tank 87 through the concentrate injection passage 110, and dilutes the concentrate 134.

The antiseptic solution sensor 140 detects and turns on the liquid in which the diluent 132, the concentrate 134, the buffer, and the bottle cleaning liquid 149 are mixed (S26). When the disinfecting liquid sensor 140 is turned on, the CPU 122 closes the solenoid valves 78 and 147 to stop the supply of the bottle cleaning liquid 149 (S27). Thereby, the disinfecting liquid 86 of predetermined concentration is produced in the disinfecting liquid tank 87.

According to the said embodiment, since the water used for the washing | cleaning in the 1st bottle 39 is useful as a dilution liquid 132, there is no waste. In the same manner as in the above embodiment, since the diluent 132 is supplied in two portions, the stirring effect of the disinfectant 86 can be expected.

The disinfecting solution 86 becomes thinner by mixing the remaining water in the washing tank 31 after washing the endoscope 10, or the decomposition of peracetic acid proceeds, and the disinfecting effect is weakened. In addition, since the disinfecting solution 86 attached to the cleaning tank 31 and the endoscope 10 is not recovered to the disinfecting solution tank 87, the disinfecting solution 86 in the disinfecting solution tank 87 is reduced. The disinfecting liquid 86 needs to be replaced when the disinfecting effect is weakened or when the amount of storage in the disinfecting liquid tank 87 decreases. In addition, since the disinfecting liquid 86 after a predetermined time has elapsed after the adjustment may also be decomposed and the disinfecting effect may be weakened, replacement is necessary.

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.

When the apparatus 28 of the present embodiment counts the number of times the disinfectant solution 86 is used after the preparation of the disinfectant solution 86, that is, the number of times of disinfection of the endoscope 10, and the count value reaches a predetermined number of times, The display panel 34 displays a message for prompting replacement of the disinfectant solution 86. When the apparatus 28 is set (S30) by the operation panel 33 to the disinfectant discharging mode, the CPU 122 uses the disinfectant tank 87 based on the signals of the concentrate sensor 118 and the bottle cleaning liquid sensor 119. The presence or absence of the antiseptic solution 86 is checked (S31).

The CPU 122 opens the solenoid valve 92 when the disinfecting liquid 86 is stored in the disinfecting liquid tank 87 (S32). 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 passage 91. The CPU 122 closes the solenoid valve 92 after the predetermined time elapses after the concentrated liquid sensor 118 is turned off (S33) (S34). This is for discharging all the disinfecting liquids 86 in the disinfecting liquid tank 87. In addition, when there is no disinfecting liquid 86 in the disinfecting liquid tank 87, the CPU 122 performs an error process (S35). As an error process, the display panel 34 displays the content that there is no disinfecting liquid 86 to discharge, for example. After the disinfecting solution 86 is discharged, it is preferable that a predetermined amount of diluent is supplied into the disinfecting solution tank 87 to clean the inside of the disinfecting solution tank 87.

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 wash | cleaned in the 1st bottle 39 by the bottle washing | cleaning liquid 154 at the time of supply of the concentrate liquid 134. As shown in FIG. For this reason, when the empty bottle unit 38 is removed from the bottle accommodating part 37, the working environment does not worsen by the odor of the concentrate liquid 134. FIG.

In addition, in each said embodiment, although the disinfecting liquid 86 is stirred by supplying dilution liquid 132 in 2 parts, when the stirring effect is weak, the disinfecting liquid 86 is circulated between the washing tank 31 and forcibly. You may stirred with. For example, after supply of the diluent 132, the concentrate 134, and the buffer to the disinfectant tank 87, the WP 88 is operated by the CPU 122, and at the same time the solenoid valve 99 is opened. The disinfectant solution 86 is circulated through the disinfectant solution supply passage 85, the washing tank 31, the waste liquid passage 94, and the second waste liquid passage 96, and is stirred while returning to the disinfectant liquid tank 87. Becomes uniform.

In each of the above embodiments, the user is substantially supplied with the supply of the concentrated liquid 134, but may be automatically performed by the apparatus 28. For example, the solenoid valve is formed in the concentrate injection passage 110 and the buffer injection passage, and the device 28 determines the timing at which the concentrate 134 or the like is supplied from the bottle unit 38 to the disinfectant tank 87. It is preferable.

The present invention can also be applied to an endoscope disinfection device that does not have a cleaning function of an endoscope. Moreover, it can use also for disinfection apparatuses, such as an endoscope treatment, and other medical instruments. This invention is not limited to the said embodiment, It can variously deform and implement in the range which does not deviate from the summary of invention.

1 is a plan view illustrating a structural example of an endoscope.

It is a perspective view which shows the external shape of the endoscope washing | cleaning disinfection apparatus of this invention.

3 is a plan view of the structure of the cleaning tank.

4 is a piping diagram showing a schematic piping system in the apparatus main body.

5 is a block diagram showing a part of an electrical configuration of an endoscope cleaning and disinfecting apparatus.

6 is a flowchart showing a process sequence of a disinfectant preparation mode.

It is explanatory drawing which shows the process sequence of the disinfecting liquid preparation mode.

8 is a flowchart showing a process sequence of a cleaning disinfection mode.

It is explanatory drawing which shows the process sequence of the disinfecting liquid preparation mode which supplies dilution liquid 2 times.

It is a flowchart which shows the process sequence of the disinfecting liquid preparation mode which supplies dilution liquid 2 times.

It is explanatory drawing which shows the process sequence of the disinfecting liquid preparation mode which dilutes a concentrated liquid using a bottle washing liquid.

It is a flowchart which shows the process sequence of the disinfecting liquid preparation mode which dilutes a concentrate using a bottle washing liquid.

It is a flowchart which shows the process sequence of the disinfecting liquid discharge mode.

* Description of the sign *

10: endoscope 28: endoscope cleaning disinfection device

31: washing tank 37: bottle receiving portion

38: bottle unit 39: first bottle

40: second bottle 86: disinfectant

87: disinfectant tank 100: dilution furnace

108: first bottle attachment portion 110: concentrated liquid injection furnace

118 diluent sensor 119 concentrate sensor

132 diluent 134 concentrate

140: disinfectant sensor 145: bottle cleaning nozzle

149: Bottle Cleaning Liquid

Claims (8)

Diluent supply means for supplying a diluent to the disinfectant tank; First detecting means for detecting that a predetermined amount of the diluent is supplied to the sanitizing solution tank; Concentrate supply means for supplying the concentrate to the disinfectant tank in the bottle storing the concentrate of the disinfectant, And the control means for stopping the diluent supply means and supplying the concentrate solution from the concentrate supply means into the disinfectant tank when the dilution liquid is detected by the first detection means. The method of claim 1, Second detecting means for detecting that a predetermined amount of the concentrate is supplied into the sanitizing solution tank; Third detecting means for detecting that a predetermined amount of the diluent is supplied into the disinfectant tank again; The control means operates the dilution liquid supplying means when the concentrated liquid is detected by the second detecting means to supply the dilution liquid into the sanitizing solution tank, and when the dilution liquid is detected by the third detecting means. Endoscope cleaning disinfection device characterized in that the diluent supply means is stopped. The method of claim 1, Second detecting means for detecting that a predetermined amount of the concentrate is supplied into the sanitizing solution tank; Bottle cleaning means for supplying the diluent to the bottle to clean the inside of the bottle; Third detecting means for detecting that the diluent flowing into the disinfectant tank after washing in the bottle has reached a predetermined amount, The control means operates the bottle cleaning means when the concentrate is detected by the second detection means, and stops the bottle cleaning means when the dilution liquid is detected by the third detection means. Endoscope cleaning disinfection device. The method according to any one of claims 1 to 3, The control means uses the disinfectant solution supply means for supplying the disinfectant solution in the disinfectant tank to the cleaning tank, and the disinfectant solution recovery means for returning the disinfectant solution in the cleaning tank to the disinfectant tank. Endoscope cleaning disinfection device, characterized in that circulating. Supplying a predetermined amount of diluent into the disinfectant tank, And a step of supplying the concentrate solution into the disinfectant tank in a bottle in which the concentrate of the disinfectant solution is stored. The method of claim 5, wherein Detecting that a predetermined amount of the concentrate is supplied into the sanitizing tank; And a step of resupplying a predetermined amount of the diluent into the disinfectant tank when the concentrated liquid is detected. The method of claim 5, wherein Detecting that a predetermined amount of the concentrate is supplied into the sanitizing tank; Supplying and diluting the diluent in the bottle when the concentrate is detected, and And a step of detecting that the diluent flowing into the disinfectant tank after the cleaning in the bottle has reached a predetermined amount, and stopping cleaning of the bottle. The method according to any one of claims 5 to 7, Circulating the dilution liquid and the concentrated liquid in the disinfectant tank by using disinfectant solution supply means for supplying the disinfectant solution in the disinfectant tank to the cleaning tank and disinfectant recovery means for returning the disinfectant solution in the cleaning tank to the disinfectant tank. Disinfectant preparation method of the endoscope cleaning disinfection device characterized in that.

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