JP6938413B2 - Disinfection method of ozone water disinfectant - Google Patents

Description

The present invention relates to a method for disinfecting an ozone water disinfecting machine that disinfects an object to be disinfected, such as an endoscope, with cleaning water containing a detergent and then with ozone water.

An endoscope disinfecting machine for disinfecting an endoscope is described in Patent Documents 1 and 2. The endoscope disinfectant of Patent Document 1 accommodates an endoscope in a disinfection tank and supplies tap water as raw water to submerge the endoscope. Next, ozone gas is injected into the raw water supplied to the disinfection tank to generate ozone water. Then, the generated ozone water is circulated along the circulation water channel passing through the disinfection tank to disinfect the endoscope in the disinfection tank. The endoscope disinfectant described in Patent Document 2 supplies a disinfectant solution composed of peracetic acid into a disinfection tank containing the endoscope. Then, the disinfectant solution is circulated along the circulating water channel passing through the disinfectant tank to disinfect the endoscope in the disinfectant tank.

The endoscope disinfecting machine of Patent Document 2 has a detergent charging mechanism for charging detergent into a disinfecting tank, and before disinfecting the endoscope with a disinfecting solution, use washing water in which detergent is dissolved in raw water. Performs a cleaning operation to clean the endoscope. The detergent charging mechanism includes a detergent tank for storing detergent, a detergent supply nozzle for adding detergent to the disinfection tank to which raw water is supplied, and a detergent supply path connecting the detergent tank and the detergent supply nozzle. The detergent supply path is provided with a detergent supply pump that sucks detergent from the detergent tank and discharges it from the detergent supply nozzle.

Japanese Unexamined Patent Publication No. 2014-33794 JP-A-2009-207742

The ozone water disinfecting machine that disinfects the endoscope with ozone water also has a detergent injection mechanism, and before disinfecting the endoscope with ozone water, wash the endoscope with washing water obtained by adding detergent to raw water. It is conceivable to provide a detergent cleaning step. However, when the ozone water is generated, if the detergent in the detergent cleaning step remains in the disinfection tank, there is a problem that the ozone concentration of the ozone water does not increase even if ozone gas is injected into the raw water.

In view of these points, an object of the present invention is to propose a disinfection method of an ozone water disinfecting machine capable of suppressing the residual detergent in the disinfection tank after the detergent cleaning operation.

In order to solve the above problems, the disinfection method of the ozone water disinfectant of the present invention includes a detergent cleaning step in which the object to be disinfected contained in the disinfection tank is submerged in cleaning water in which a detergent is dissolved in raw water to clean it. , A washing water discharge step of discharging the washing water from the disinfection tank, a disinfection raw water supply step of supplying raw water to the disinfection tank to submerge the object to be disinfected, and the raw water supplied to the disinfection tank. It has an ozone water generation step of injecting ozone gas to generate ozone water and an ozone water disinfection step of disinfecting an object to be disinfected in the disinfection tank with the ozone water, and the washing water discharge step. Then, the raw water supplied from the outside of the disinfection tank is shower-like to the exposed portion of the object to be disinfected that is exposed upward from the surface of the washing water due to the decrease in the water level of the washing water discharged from the disinfection tank. There line shower rinsing operation pour on, the a washing water discharge step, the between the disinfecting raw water supply step, the rinse water supplied to submerge is supplied to the disinfecting bath the raw as rinse water the object to be disinfected object The rinsing water comprises a step, a rinsing step of washing the object to be sterilized in the sterilizing tank with the rinsing water, and a rinsing water discharging step of discharging the rinsing water from the sterilizing tank. In the discharge step, the disinfectant is supplied from the outside of the disinfectant to the exposed portion of the object to be disinfected that is exposed upward from the surface of the rinse water as the water level of the rinse water discharged from the disinfectant decreases. It is characterized by performing a second shower rinsing operation in which raw water is showered.

According to the present invention, when the washing water is discharged from the disinfection tank, the exposed portion of the object to be disinfected exposed from the surface of the washing water is exposed to raw water. As a result, the washing water adhering to the object to be disinfected flows down and is discharged from the disinfection tank, so that it is possible to prevent the detergent from remaining in the disinfection tank. Therefore, in the ozone water generation step, it becomes easy to raise the concentration of the generated ozone water to a desired concentration. Further, according to the present invention, since the rinsing step is provided, the residual detergent in the disinfectant tank can be further suppressed. Further, since the shower rinsing operation is also performed when the rinse water is discharged, it becomes easy to raise the concentration of the generated ozone water to a desired concentration in the ozone water generation step.

In the present invention, the disinfection tank is provided with a water level gauge in advance, and in the washing water discharge step, the water level of the washing water discharged from the disinfection tank is monitored, and the water level is the whole of the object to be disinfected. When the exposed water level is reached, the shower rinsing operation can be performed. In this way, after the entire object to be disinfected is exposed from the surface of the washing water, the exposed portion of the object to be disinfected (the entire object to be disinfected) can be exposed to raw water.

In the present invention, it is desirable to use a liquid alkaline detergent as the detergent. If the detergent is a liquid, the detergent is easily dissolved in raw water. Further, if the detergent is an alkaline detergent, it is easy to remove the deposits adhering to the object to be disinfected.

In the present invention, has a higher ozone water drainage Engineering for discharging the ozone water from the sterilization bath, in the ozone water drainage step, the water surface of the ozone water by the reduction of the water level of the ozone water discharged from the sterilization bath A shower rinsing operation can be performed in which the raw water supplied from the outside of the disinfection tank is showered on the exposed portion of the object to be disinfected that is exposed upward from the surface.

In this way , since the shower rinsing operation is performed in the ozone water drainage step to expose the object to be disinfected with raw water, it is possible to prevent water droplets of ozone water from remaining on the object to be disinfected after the ozone water is discharged. Therefore, when the object to be disinfected is taken out from the disinfection tank, the odor of the object to be disinfected and the inside of the disinfection tank can be reduced.

It is a perspective view and the side view of the endoscope disinfectant to which this invention is applied. It is a perspective view of the disinfection tank of the endoscope disinfectant machine and the endoscope support tray. It is a schematic block diagram of an endoscope disinfectant. It is a schematic block diagram which shows the control system of an endoscope disinfectant. It is a flowchart of the cleaning and disinfecting operation of an endoscope.

(overall structure)
FIG. 1 (a) is an external perspective view of the endoscope disinfectant according to the present embodiment when viewed from the front, and FIG. 1 (b) is a side view of the endoscope disinfectant. FIG. 2 is a perspective view of a disinfection tank and an endoscope support tray provided inside the endoscope disinfectant. FIG. 2 shows the inside of the disinfection tank with the front plate removed. The endoscope disinfecting machine 1 of this example cleans and disinfects the endoscope 10 housed in the disinfection tank 2. The cleaning and disinfecting treatment includes a cleaning step of cleaning the endoscope 10 in the disinfection tank 2 using cleaning water in which a detergent is dissolved in raw water, and an endoscope in the disinfection tank 2 using ozone water. It has a disinfection step of performing a disinfection operation for disinfecting 10.

As shown in FIG. 1, the endoscope disinfecting machine 1 includes a vertically long rectangular parallelepiped housing 5 as a whole. An opening / closing lid 6 that can be opened upward with the rear end edge as the center is attached to the upper surface of the housing 5. The opening / closing lid 6 opens / closes the opening 2a at the upper end of the disinfection tank 2 provided inside the housing 5. A touch panel 7 is arranged on the upper surface of the housing 5 on the rear side of the opening / closing lid 6. By touching the work content displayed on the touch panel 7, the cleaning and disinfecting process is executed. The touch panel 7 displays the current progress of work and the like. A transparent window 8 is provided on the upper portion of the front surface of the housing 5. Further, as will be described later, since the front plate 15 of the disinfection tank is transparent, the state inside the disinfection tank 2 can be visually observed through the window 8 and the front plate 15. In the following description, the three directions orthogonal to each other are the X direction, the Y direction, and the Z direction. The X direction is the front-rear direction of the endoscope disinfectant 1, and the side on which the window 8 is provided is the front. The Z direction is the vertical direction and the vertical direction. The Y direction is the width direction of the endoscope disinfectant 1. Further, when the endoscope disinfectant 1 is viewed from the front, the left side (one side) is the Y1 direction, and the right side (the other side) is the Y2 direction.

The disinfection tank 2 has a rectangular shape that is long in the Z direction when viewed from the X direction. As shown by a chain line in FIG. 1B, the disinfection tank 2 includes a lower portion 11 having a narrow width in the X direction and an upper portion 12 having a width wider in the X direction than the lower portion 11. The upper portion 12 projects forward of the lower portion 11. The endoscope support tray 14 is inserted into the disinfection tank 2 through the opening 2a.

As shown in FIG. 2, the disinfection tank 2 defines a front plate 15 that defines the front surface of the disinfection tank 2, a back plate 16 that defines the back surface, a pair of side plates 17 and 18 that define the side surfaces, and a bottom surface. A bottom plate 19 is provided. The width of the upper portion of each of the side plates 17 and 18 in the X direction is wider than the width of the lower portion in the Y direction, and the upper portion projects forward from the lower portion. The bottom plate 19 is provided with a disinfection tank drain port 20 at a central portion in the Y direction. The front plate 15 is transparent, and the inside of the disinfection tank 2 can be seen through the front plate 15.

The endoscope support tray 14 includes a rectangular back plate portion 21 corresponding to the shape of the disinfection tank 2, side plate portions 22 and 23 protruding forward from both end edges in the Y direction of the back plate portion 21, and a back plate. A lower plate portion 24 that curves upward from the lower side of the portion 21 toward the front is provided. Further, the endoscope support tray 14 includes a plurality of columns (not shown) protruding forward from the back plate portion 21. In the endoscope support tray 14, the back plate portion 21 is arranged in the disinfection tank 2 in a posture along the back plate 16 of the disinfection tank 2. The back plate portion 21 is provided with a small cleaning container 25 in a lower portion of a central portion in the Y direction. The accessory cleaning container 25 is made of a plate material having a large number of holes, has an openable lid at the top, and accommodates accessory parts such as an air supply / water supply button (not shown) removed from the endoscope 10. .. The width of the side plates 22 and 23 in the X direction is narrower than the width of the side plates 17 and 18 of the disinfection tank 2 in the X direction. A detergent charging mechanism 27 is provided at the corner of the upper end of the back plate portion 21 in the Y2 direction.

The endoscope 10 is set on the endoscope support tray 14 in a state of being supported by a support column on the outside of the disinfection tank 2. After that, it is inserted into the disinfection tank 2 together with the endoscope support tray 14 and arranged in the disinfection tank 2. When the endoscope support tray 14 is inserted into the disinfection tank 2, the detergent charging mechanism 27 is also located in the disinfection tank 2.

FIG. 3 is a schematic configuration diagram of the endoscope disinfectant 1. The endoscope disinfecting machine 1 showers raw water into a disinfecting tank 2 accommodating the endoscope 10, a raw water supply mechanism 31 for supplying raw water to the disinfecting tank 2, and an endoscope 10 arranged in the disinfecting tank 2. It is provided with a shower mechanism 32 for showering in a shape. The raw water supply mechanism 31 includes a water supply port 33 connected to a pipe for raw water such as tap water, a disinfection tank water supply port 34 provided in the lower portion 11 of the disinfection tank 2, a water supply port 33, and a disinfection tank water supply port 34. A raw water supply path 35 for connecting the raw water supply path 35 and an opening / closing valve 36 for opening and closing the raw water supply path 35 are provided.

The shower mechanism 32 includes a plurality of shower nozzles 37 provided on the side surface of the disinfection tank 2 and a portion of the raw water supply path 35 on the upstream side of the opening / closing valve 36 (a portion closer to the water supply port 33 than the opening / closing valve 36). A shower raw water supply path 38 connecting the shower nozzle 37 and a shower valve 39 for opening and closing the shower raw water supply path 38 are provided. A sterile filter may be arranged in the shower raw water supply path 38.

Further, the endoscope disinfectant 1 includes a circulation water channel 41 passing through the disinfection tank 2. The circulation water channel 41 includes a disinfection tank 2, a recirculation port 42 provided in the upper portion 12 of the disinfection tank 2, and a portion downstream of the on-off valve 36 in the perfusion port 42 and the raw water supply channel 35 (than the on-off valve 36). It is provided with a circulation channel portion 43 that connects the disinfection tank (the portion on the side close to the water passage port 34). A circulation pump 44 (pump) is installed in the circulation water channel portion 43. Further, an ozone concentration meter 45 is installed in the circulation channel portion 43. The ozone concentration meter 45 detects the ozone concentration of a liquid such as raw water flowing through the circulating water channel portion 43, and outputs a signal corresponding to the ozone concentration.

Here, the circulation water channel portion 43 includes a branch water channel 47 for connecting an endoscope, which branches between the circulation pump 44 and the return port 42 and extends into the disinfection tank 2. The branch water channel 47 for connecting an endoscope is connected to the endoscope 10 housed in the disinfection tank 2. More specifically, the tip of each endoscope connecting water channel 47 is composed of a flexible tube, and the tip of each tube is a forceps port of the endoscope 10 and an air supply / water supply port. Connected to the secondary water outlet. An air passage 48 for blowing sterile air into the endoscope 10 is connected to the branch water channel 47 for connecting the endoscope. The air passage 48 is provided with an air pump 49 and an aseptic filter (not shown). Further, the circulation water channel portion 43 includes an ozone gas injection branch channel 52 that branches between the circulation pump 44 and the return port 42 and reaches the ozone water supply port 51 provided in the lower portion 11 of the disinfection tank 2.

Further, the endoscope disinfectant 1 includes an ozone water generation mechanism 55 that generates ozone water. The ozone water generation mechanism 55 includes an ozoneizer 56 that generates ozone gas, and an ozone gas supply passage 58 that extends from the ozoneizer 56 and is connected to a branch water channel 52 for injecting ozone gas via an aspirator 57. The ozonizer 56 generates ozone gas from oxygen supplied from an oxygen cylinder 59, which is an external oxygen supply source.

Further, the endoscope disinfecting machine 1 includes an ozone gas exhaust mechanism 61 that discharges ozone gas generated from ozone water in the disinfecting tank 2. The ozone gas exhaust mechanism 61 is an exhaust path connecting the disinfection tank exhaust port 62 provided at the upper end portion of the disinfection tank 2, the exhaust port 63 provided in the housing 5, and the disinfection tank exhaust port 62 and the exhaust port 63. 64 is provided. The exhaust passage 64 extends via the ozone decomposition mechanism 65, and the ozone gas is decomposed by the ozone decomposition mechanism 65 to become gas and is discharged to the outside from the exhaust port 63.

Further, the endoscope disinfecting machine 1 includes a drainage mechanism 66 for discharging a liquid such as raw water stored in the disinfecting tank 2. The drainage mechanism 66 has a disinfection tank drainage port 20 provided on the bottom surface of the disinfection tank 2, a discharge port 67 for discharging liquid to the outside of the endoscope disinfectant 1, and a discharge port 67 and a disinfection tank drainage port 20. A drainage channel 68 to be connected is provided. The drainage channel 68 is provided with a drainage valve 69 and a drainage pump 70 that open and close the drainage channel 68.

Further, the endoscope disinfecting machine 1 is provided with a detergent charging mechanism 27 in the disinfecting tank 2 by arranging the endoscope support tray 14 in the disinfecting tank 2. The detergent charging mechanism 27 is located above the endoscope 10 supported by the endoscope support tray 14.

As shown in FIG. 2, the detergent charging mechanism 27 includes a cup 71 containing a single amount of detergent for cleaning the endoscope 10, and a rotating body 73 having a float 72 filled with air. The float 72 is located on the side of the cup 71. Further, the detergent charging mechanism 27 includes a support mechanism 75 that rotatably supports the rotating body 73 around a rotating shaft L passing through the cup 71 in the X direction (see FIG. 2).

When the raw water is supplied to the disinfection tank 2 while the detergent is held in the cup 71, the detergent charging mechanism 27 charges the detergent into the raw water from the cup 71 after the endoscope 10 is submerged to serve as cleaning water. Perform the detergent injection operation.

The detergent injection operation is performed as the surface of the raw water rises. That is, when the surface of the raw water supplied to the disinfection tank 2 reaches the float 72, the float 72 rises as the water surface rises, and the rotating body 73 rotates around the rotation axis L in the first rotation direction R1. As a result, the cup 71 rotates, and the opening 71a of the cup 71 is opened below the surface of the raw water and downward. Therefore, the detergent in the cup 71 is diffused and dissolved in the raw water to generate washing water. In this example, the detergent is a liquid alkaline detergent. If the detergent is a liquid, the detergent easily diffuses into the raw water and dissolves easily. Further, if the detergent is an alkaline detergent, it is easy to remove the deposits adhering to the endoscope 10.

Here, the detergent charging operation in which the detergent charging mechanism 27 charges the detergent into the raw water is performed when the raw water is first supplied to the disinfection tank 2.

Further, as shown in FIG. 3, the endoscope disinfecting machine 1 detects the water level of a liquid such as raw water supplied to the disinfecting tank 2, the first water level meter 77, the second water level meter 78, and the third water level. A total of 79 are provided. The first water level gauge 77 is installed in the lower portion 11 of the disinfection tank 2. The second water level gauge 78 is installed in the upper portion 12 of the disinfection tank 2. The third water level gauge 79 is installed above the second water level gauge 78 and at the upper end portion near the opening 2a of the disinfection tank 2. Each of the water level gauges 77, 78, 79 detects that the water surface of a liquid such as raw water in the disinfection tank 2 has reached the installation position of each water level gauge. The second water level gauge 78 detects the full water level (set water level) at which the liquid supplied into the disinfection tank 2 is full. At a full water level, the endoscope 10 is submerged in liquid. Further, the cup 71 of the detergent charging mechanism 27 is also submerged in the liquid. The third water level gauge 79 detects that the liquid has reached the upper limit that can be stored in the disinfection tank 2. The position of the water surface detected by the first water level gauge 77 is a predetermined water level at which the entire endoscope 10 is exposed from the liquid water surface.

(Control system)
FIG. 4 is a schematic configuration diagram of the control system of the endoscope disinfectant 1. As shown in FIG. 4, the control system of the endoscope disinfectant 1 is mainly composed of a control unit 80 including a CPU, a ROM, and a RAM. An ozone concentration meter 45, a first water level meter 77, a second water level meter 78, and a third water level meter 79 are connected to the input side of the control unit 80. An on-off valve 36 of the raw water supply mechanism 31, an ozonizer 56 of the ozone water generation mechanism 55, a circulation pump 44, a drain valve 69, and a drain pump 70 are connected to the output side of the control unit 80. A touch panel 7 is connected to the control unit 80. When a command to start the cleaning / disinfecting process is input by operating the touch panel 7, the control unit 80 drives each mechanism to perform the cleaning / disinfecting process.

The control unit 80 has a function of driving and controlling each mechanism by executing a pre-installed program. In this example, when the program is executed, the control unit 80 includes a cleaning raw water supply control unit 81 and a cleaning control unit 83. In addition, the control unit 80
The discharge control unit 86 and the shower control unit 87 are provided. Further, the control unit 80 includes a rinsing raw water supply control unit 91 and a rinsing control unit 92. Further, the control unit 80 includes a raw water supply control unit 95 for disinfection, an ozone water generation control unit 96, and a disinfection control unit 97.

When a cleaning disinfection process start command is input to the control unit 80 via the touch panel 7, the cleaning raw water supply control unit 81 drives the raw water supply mechanism 31 to first supply the raw water to the disinfection tank 2. The endoscope 10 housed in the disinfection tank 2 is submerged. The cleaning raw water supply control unit 81 supplies the raw water until the surface of the raw water is detected by the second water level gauge 78 (up to the full water position).

The cleaning control unit 83 circulates the cleaning water along the circulating water channel 41 by driving the circulation pump 44, and performs a cleaning operation for cleaning the endoscope 10 with the cleaning water. The cleaning operation is performed for a predetermined cleaning time set in advance.

Here, the cleaning control unit 83 drives the circulation pump 44 from the time when the raw water is supplied to the disinfection tank 2 by the cleaning raw water supply control unit 81 and the raw water level is detected by the first water level gauge 77. Therefore, the cleaning control unit 83 first circulates the raw water along the circulation water channel 41 by driving the circulation pump 44. Then, the cleaning control unit 83 circulates the cleaning water along the circulation water channel 41 after the endoscope 10 is submerged in the raw water and the detergent is added to the raw water. Further, after the washing water is generated, the washing water circulates in the circulating water channel 41 to generate a water flow in the disinfection tank 2, so that the endoscope 10 housed in the disinfection tank 2 is washed with the detergent. can.

The discharge control unit 86 controls the discharge of a liquid such as raw water from the washing tank. When the washing operation is completed, the discharge control unit 86 drives the draining mechanism 66 to perform a washing water draining operation for discharging the washing water. That is, when the washing operation is completed, the discharge control unit 86 drives the drain valve 69 and the drain pump 70 to perform a washing water draining operation for discharging the washing water. Further, the discharge control unit 86 drives the air pump 49 during the drainage operation to blow sterile air into the endoscope 10 from the branch water channel 47 for connecting the endoscope. As a result, the washing water is discharged from the inside of the endoscope 10.

When the water level of the washing water, which is lowered by the discharge from the disinfection tank 2, reaches a predetermined water level, the shower control unit 87 drives the shower mechanism 32 to perform a shower rinsing operation. That is, the shower control unit 87 drives the shower valve 39 to eject the raw water supplied from the outside of the disinfection tank 2 from the shower nozzle 37, and showers the endoscope 10 in a shower shape. The predetermined water level is the water level at which the entire endoscope 10 is exposed from the water surface of the washing water, and the water level of the washing water is the water level detected by the first water level meter 77.

The rinsing raw water supply control unit 91 drives the raw water supply mechanism 31 after the washing water is discharged, supplies the raw water as rinsing water to the disinfection tank 2, and submerges the endoscope 10 in the raw water. The rinsing control unit 92 drives the circulation pump 44 when the rinsing raw water supply control unit 91 supplies the rinsing water to the disinfection tank 2. That is, the rinsing control unit 92 drives the circulation pump 44 from the time when the rinsing water is supplied to the disinfection tank 2 and the water level of the rinsing water is detected by the first water level gauge 77, and the rinsing water is flowed along the circulation water channel 41. And circulate. As a result, a water stream is generated in the disinfection tank 2, so that the rinsing operation of washing the endoscope 10 with rinsing water is performed. The rinsing operation is performed for a predetermined rinsing time set in advance.

Here, when the rinsing operation is completed, the discharge control unit 86 drives the drainage mechanism 66 to perform a rinsing water drainage operation for discharging the rinsing water from the disinfection tank 2. Further, when the water level of the rinse water, which is lowered by the discharge from the disinfection tank 2, reaches a predetermined water level, the shower control unit 87 drives the shower mechanism 32 to perform a shower rinse operation.

The disinfecting raw water supply control unit 95 performs a disinfecting raw water supply operation of driving the raw water supply mechanism 31 to submerge the endoscope 10 in the raw water after the rinsing operation is completed and the rinsing water is discharged from the disinfecting tank 2. conduct. The disinfection raw water supply control unit 95 supplies the raw water to the disinfection tank 2 up to the full water level at which the water level of the raw water is detected by the second water level gauge 78.

The ozone water generation control unit 96 drives the ozone water generation mechanism 55 to perform an ozone water generation operation for generating ozone water, and ozone water is set to a predetermined ozone concentration based on a signal from the ozone concentration meter 45. Performs density adjustment operation. That is, the ozone water generation control unit 96 drives the ozonizer 56 to inject ozone gas into the raw water flowing through the ozone gas injection branch water channel 52. Further, the ozone water generation control unit 96 drives the ozone concentration meter 45 and monitors the signal output from the ozone concentration meter 45. Then, the ozone water generation control unit 96 drives and controls the ozoneizer 56 based on the signal from the ozone concentration meter 45 to control the injection amount of ozone gas, and sets the ozone water to a predetermined ozone concentration.

The disinfection control unit 97 circulates ozone water along the circulation water channel 41 by driving the circulation pump 44, and performs a disinfection operation for disinfecting the endoscope 10 with the ozone water. The disinfection operation is performed for a predetermined disinfection time set in advance. Here, the disinfection control unit 97 drives the circulation pump 44 from the time when the raw water is supplied to the disinfection tank 2 by the disinfection raw water supply control unit 95 and the raw water level is detected by the first water level gauge 77 to supply the raw water. It circulates along the circulation channel 41. Therefore, in the ozone water generation operation, by supplying ozone gas to the ozone gas injection branch water channel 52, ozone gas can be injected into the raw water to generate ozone water. Further, after the ozone water is generated, the ozone water circulates in the circulating water channel 41 to generate a water flow in the disinfection tank 2, so that the endoscope 10 housed in the disinfection tank 2 can be disinfected by the ozone water.

The ozone water generation control unit 96 monitors the signal from the ozone concentration meter 45 while the disinfection operation is being performed. Then, the ozone water generation control unit 96 drives the ozonizer 56 based on the signal from the ozone concentration meter 45 to perform an ozone concentration maintaining operation for maintaining the ozone concentration of the ozone water. The ozone gas released from the ozone water during the disinfection operation is decomposed from the disinfection tank exhaust port 62 via the ozone decomposition mechanism 65 and discharged to the outside from the exhaust port 63.

Here, when the disinfection operation is completed, the discharge control unit 86 drives the drainage mechanism 66 to perform an ozone water drainage operation for discharging ozone water from the disinfection tank 2. Further, when the water level of ozone water, which is lowered by the discharge from the disinfection tank 2, reaches a predetermined water level, the shower control unit 87 drives the shower mechanism 32 to perform a shower rinsing operation. The ozone water discharged from the disinfection tank 2 is discharged to the outside through an ozone decomposer (not shown). The ozone decomposer holds ozone decomposed products such as activated carbon and decomposes ozone contained in the discharged ozone water.

(Washing and disinfection treatment)
Next, the cleaning and disinfecting treatment of the endoscope disinfecting machine 1 will be described with reference to FIG. FIG. 5 is a flowchart of the cleaning and disinfecting process. First, the operator sets the endoscope 10 on the endoscope support tray 14, and arranges the endoscope support tray 14 in the disinfection tank 2 (step ST01). Next, the operator holds the detergent in the cup 71 of the detergent charging mechanism 27 (step ST02). After that, the operator inputs a start command for the cleaning / disinfecting process via the touch panel 7 (step ST03). As a result, the endoscope disinfecting machine 1 starts the cleaning and disinfecting process.

The cleaning and disinfecting treatment includes a cleaning step (step ST1), a washing water discharge step (step ST2), a rinsing step (step ST3), a rinsing water discharge step (step ST4), a disinfection step (step ST5), and an ozone water drainage step (step). ST6), is provided.

The washing step (step ST1) includes a washing water generation step (step ST11) in which raw water is supplied to the disinfection tank 2 to submerge the endoscope 10 and then detergent is added to make the washing water, and disinfection with the washing water. A detergent cleaning step (step ST12) of performing a detergent cleaning operation for cleaning the endoscope 10 in the tank 2 is provided.

In the washing water generation step (step ST11), the washing raw water supply control unit 81 drives the raw water supply mechanism 31 to supply the raw water to the disinfection tank 2. Further, in the washing water generation step (step ST11), the detergent charging operation (step ST111) by the detergent charging mechanism 27 is performed to generate washing water.

In the detergent cleaning step (step ST12), the cleaning control unit 83 performs a detergent cleaning operation for cleaning the endoscope 10 by circulating cleaning water along the circulation water channel 41 by driving the circulation pump 44. The detergent cleaning operation is performed for a predetermined cleaning time.

In the washing water discharge step (step ST2), the discharge control unit 86 drives the drainage mechanism 66 to perform a washing water drainage operation (step ST21) for discharging the washing water. During the wash water drainage operation (step ST21), the shower control unit 87 drives the shower mechanism 32 and is exposed upward from the surface of the wash water as the level of the wash water discharged from the disinfection tank 2 drops. A shower rinsing operation (step ST211) is performed in which raw water is showered on the exposed portion of the endoscope 10 (the entire endoscope 10). In the shower rinsing operation (step ST211), the shower-like raw water is also poured on the wall surface (front plate 15, back plate 16, and side plates 17, 18) of the disinfection tank 2. As a result, the wall surface of the disinfection tank 2 is rinsed with raw water.

In the rinsing step (step ST3), the rinsing raw water supply control unit 91 drives the raw water supply mechanism 31 to supply the raw water (rinsing water) to the disinfection tank 2 and submerge the endoscope 10 in the raw water. Further, the rinsing control unit 92 drives the circulation pump 44 to circulate the raw water along the circulating water channel 41, and performs a rinsing operation for washing the endoscope 10 with the raw water. The rinsing operation is performed only for a preset rinsing time.

In the rinse water discharge step (step ST4), the discharge control unit 86 drives the drainage mechanism 66 to perform a rinse water drainage operation (step ST41) for discharging raw water (rinse water). During the rinse water drainage operation (step ST41), the shower control unit 87 drives the shower mechanism 32 and is exposed upward from the surface of the rinse water as the water level of the rinse water discharged from the disinfection tank 2 drops. A second shower rinsing operation (step ST411) is performed in which raw water is showered on the exposed portion of the endoscope 10 (the entire endoscope 10). In the second shower rinsing operation (step ST411), the shower-like raw water is also poured on the wall surface (front plate 15, back plate 16, and side plates 17, 18) of the disinfection tank 2. As a result, the wall surface of the disinfection tank 2 is rinsed with raw water.

The disinfection step (step ST5) includes a raw water supply step for disinfection (step ST51), an ozone water generation step (step ST52), and an ozone water disinfection step (step ST53). In the disinfection raw water supply step (step ST51), the disinfecting raw water supply control unit 95 drives the raw water supply mechanism 31 to perform a disinfecting raw water supply operation for submerging the endoscope 10 in the raw water.

In the ozone water generation step (step ST52), the ozone water generation control unit 96 drives the ozone water generation mechanism 55 to generate ozone water, and the ozone water is generated as predetermined ozone based on the signal from the ozone concentration meter 45. Let it be the concentration. In the ozone water disinfection step (step ST53), the ozone water disinfection operation is performed for a predetermined disinfection time by driving the circulation pump 44 by the disinfection control unit 97. Further, in the ozone water disinfection step (step ST53), the ozone water generation control unit 96 monitors the signal from the ozone concentration meter 45 and drives the ozonizer 56 based on the signal from the ozone concentration meter 45 to drive the ozone water. Maintain ozone concentration.

In the ozone water drainage step (step ST6), the discharge control unit 86 drives the drainage mechanism 66 to perform an ozone water drainage operation for discharging ozone water from the disinfection tank 2. During the ozone water drainage operation (step ST61), the shower control unit 87 drives the shower mechanism 32 and is exposed upward from the surface of the ozone water due to a decrease in the ozone water discharged from the disinfection tank 2. A third shower rinsing operation (step ST611) is performed in which raw water is showered on the exposed portion of the endoscope 10 (the entire endoscope 10). In the third shower rinsing operation (step ST611), the shower-like raw water is also poured on the wall surface (front plate 15, back plate 16, and side plates 17, 18) of the disinfection tank 2. As a result, the wall surface of the disinfection tank 2 is also rinsed with raw water.

The ozone water discharged from the disinfection tank 2 is discharged to the outside via an ozone decomposer. As a result, the cleaning and disinfecting operation of the endoscope 10 is completed, and the endoscope disinfecting machine 1 is stopped. When the cleaning and disinfecting operation is completed, the operator takes out the endoscope support tray 14 from the disinfection tank 2, removes the endoscope 10 (step ST04), and stores the endoscope in a predetermined storage location.

(Action effect)
According to this example, in the washing water discharge step (step ST2) in which the washing water is discharged from the disinfection tank 2, the endoscope 10 exposed from the surface of the washing water is exposed to raw water. As a result, the washing water adhering to the surface of the endoscope 10 flows down and is discharged from the disinfection tank 2, so that it is possible to prevent the detergent from remaining in the disinfection tank 2. When the endoscope 10 is exposed to raw water, the wall surfaces of the disinfection tank 2 (front plate 15, back plate 16, and side plates 17, 18) are also exposed to raw water. As a result, the washing water adhering to the wall surface of the disinfection tank 2 flows down and is discharged from the disinfection tank 2. Therefore, in the subsequent ozone water generation step (step ST52), the concentration of the generated ozone water can be increased to a desired concentration.

Further, in the washing water discharge step (step ST2), the water level of the washing water discharged from the disinfection tank 2 is monitored, and when the water level reaches a predetermined water level detected by the first water level meter 77, a shower rinsing operation (step) is performed. ST211) is performed. As a result, the exposed portion of the endoscope 10 exposed from the surface of the washing water (the entire endoscope 10) can be exposed to the raw water.

Further, in this example, between the washing water discharge step (step ST2) and the disinfectant raw water supply step (step ST51), a rinse water supply step, a rinse step (step ST3), and a rinse water discharge step (step). In the rinse water discharge step (step ST4), the endoscope 10 is exposed upward from the surface of the rinse water as the water level of the rinse water discharged from the disinfection tank 2 decreases. A second shower rinsing operation (step ST411) is performed in which the portion (the entire endoscope 10) is showered with the raw water supplied from the outside of the disinfection tank 2. When the endoscope 10 is exposed to raw water, the wall surfaces of the disinfection tank 2 (front plate 15, back plate 16, and side plates 17, 18) are also exposed to raw water. As a result, the residual detergent in the disinfection tank 2 can be further suppressed, so that the concentration of the generated ozone water can be easily increased to a desired concentration in the ozone water generation step (step ST52).

Further, in this example, a liquid alkaline detergent is used as the detergent. If the detergent is a liquid, the detergent is easily dissolved in raw water. Further, if the detergent is an alkaline detergent, it is easy to remove the deposits adhering to the endoscope 10.

Further, in this example, in the ozone water drainage step (step ST6) in which ozone water is discharged from the disinfection tank 2, the ozone water is exposed upward from the water surface due to the decrease in the ozone water discharged from the disinfection tank 2. A third shower rinsing operation (step ST611) is performed in which the exposed portion of the endoscope 10 (the entire endoscope 10) is showered with raw water supplied from the outside of the disinfection tank 2 in a shower shape. As a result, the ozone water adhering to the surface of the endoscope 10 flows down and is discharged from the disinfection tank 2. Therefore, it is possible to prevent water droplets of ozone water from remaining on the endoscope 10 after the ozone water is discharged. Further, when the endoscope 10 is exposed to raw water, the wall surface of the disinfection tank 2 (front plate 15, back plate 16, and side plates 17, 18) is also exposed to raw water, so that the raw water adheres to the wall surface of the disinfection tank 2. The ozone water that had been used up flows down and is discharged from the disinfection tank 2. Therefore, it is possible to prevent the ozone water droplets from remaining on the wall surface of the disinfection tank 2 after the ozone water is discharged. As a result, when the cleaning and disinfecting operation of the endoscope 10 is completed and the endoscope 10 is taken out from the disinfection tank 2, the odor of the endoscope 10 and the odor in the disinfection tank 2 can be reduced. can.

(Modification example)
In the above example, the shower rinsing operation (ST211), the second shower rinsing operation (ST411), and the third shower rinsing operation (ST611) are performed after the entire endoscope 10 is exposed from the water surface. , These shower rinsing operations (ST211, ST411, ST611) may be performed from the time when a part of the endoscope 10 is exposed from the water surface. In this case, for example, the shower rinsing operation is started after a predetermined time has elapsed from the time when the discharge control unit 86 drives the drainage mechanism 66 to start the drainage operation of discharging the washing water, the rinsing water, or the ozone water. Then, the raw water can be showered on the endoscope 10 from the time when a part of the endoscope 10 is exposed from the water surface.

In addition, as a detergent input mechanism, a detergent tank for storing detergent, a detergent supply nozzle for adding detergent to a disinfectant tank to which raw water is supplied, and a detergent supply path connecting the detergent tank and the detergent supply nozzle. , A detergent supply pump that sucks detergent from the detergent tank and discharges it from the detergent supply nozzle may be adopted. In this case, the control unit 80 is provided with a detergent input control unit that drives and controls the detergent supply pump. The detergent input control unit drives the detergent supply pump after the raw water is first supplied to the disinfection tank 2 by the cleaning raw water supply control unit 81 and the endoscope 10 is submerged, so that the raw water circulates in the circulating water channel 41. Add detergent.

Here, the present invention does not include a cleaning step (step ST1), a cleaning water discharge step (step ST2), a rinsing step (step ST3), and a rinsing water discharge step (step ST4) in the cleaning and disinfecting treatment. It can be applied to the spectroscopic disinfectant 1. That is, according to the present invention, in the flow chart of the cleaning / disinfecting process shown in FIG. 5, when the operator inputs a start command of the cleaning / disinfecting process via the touch panel 7 (step ST03), the disinfection step (step ST5) and the ozone water drainage step It can be applied to the endoscope disinfecting machine 1 in which (step ST6) is performed.

Even in this case, since the shower rinsing operation (step ST611) is performed in the ozone water drainage step (step ST6) in which the ozone water is discharged from the disinfection tank 2, the ozone water drops on the endoscope 10 after the ozone water is discharged. Can be prevented from remaining. Further, when the endoscope 10 is exposed to raw water, the wall surface of the disinfection tank 2 (front plate 15, back plate 16, and side plates 17, 18) is also exposed to raw water, so that the raw water adheres to the wall surface of the disinfection tank 2. The ozone water that had been used up flows down and is discharged from the disinfection tank 2. Therefore, it is possible to prevent the ozone water droplets from remaining on the wall surface of the disinfection tank 2 after the ozone water is discharged. As a result, when the cleaning and disinfecting operation of the endoscope 10 is completed and the endoscope 10 is taken out from the disinfection tank 2, the odor of the endoscope 10 and the odor in the disinfection tank 2 can be reduced. can.

Needless to say, the present invention can be applied to an ozone water disinfecting machine in which a medical device or the like different from the endoscope 10 is housed in a disinfecting tank 2 as an object to be disinfected and a detergent cleaning operation and an ozone water disinfection operation are performed. ..

1 ... Endoscopic disinfectant (ozone water disinfectant), 2 ... Disinfection tank, 2a ... Opening, 5 ... Housing, 6 ... Opening and closing lid, 7 ... Touch panel, 8 ... Window, 10 ... Endoscope (disinfected) Things), 11 ... Lower part, 12 ... Upper part, 14 ... Endoscope support tray, 15 ... Front plate, 16 ... Back plate, 17, 18 ... Side plate, 19 ... Bottom plate, 20 ... Disinfection tank drain port, 21 ... Back plate, 22, 23 ... Side plate, 24 ... Lower plate, 25 ... Small cleaning container, 27 ... Detergent injection mechanism, 31 ... Raw water supply mechanism, 32 ... Shower mechanism, 33 ... Water supply port, 34 ... Disinfection tank Water flow port, 35 ... Raw water supply channel, 36 ... Open / close valve, 37 ... Shower nozzle, 38 ... Raw water supply channel for shower, 39 ... Shower valve, 41 ... Circulation channel, 42 ... Circulation port, 43 ... Circulation channel part, 44 ... Circulation pump, 45 ... Ozone concentration meter, 47 ... Branch channel for connecting endoscope, 48 ... Blower channel, 49 ... Air pump, 51 ... Ozone water supply port, 52 ... Branch channel for ozone gas injection, 55 ... Ozone water generation Mechanism, 56 ... Ozonizer, 57 ... Aspirator, 58 ... Ozone gas supply path, 59 ... Oxygen cylinder, 61 ... Ozone gas exhaust mechanism, 62 ... Disinfection tank exhaust port, 63 ... Exhaust port, 64 ... Exhaust path, 65 ... Ozone decomposition mechanism, 66 ... Drainage mechanism, 67 ... Discharge port, 68 ... Drainage channel, 69 ... Drain valve, 70 ... Drainage pump, 71 ... Cup, 71a ... Opening, 72 ... Float, 73 ... Rotating body, 75 ... Support mechanism, 77 ... 1st water level gauge, 78 ... 2nd water level gauge, 79 ... 3rd water level gauge, 80 ... control unit, 81 ... raw water supply control unit for cleaning, 83 ... cleaning control unit, 86 ... discharge control unit, 87 ... shower control unit , 91 ... Rinse raw water supply control unit, 92 ... Rinse control unit, 95 ... Disinfection raw water supply control unit, 96 ... Ozone water generation control unit, 97 ... Disinfection control unit

Claims (4)

A detergent cleaning step in which the object to be disinfected contained in the disinfection tank is submerged in cleaning water in which a detergent is dissolved in raw water to clean it, a cleaning water discharge step in which the cleaning water is discharged from the disinfection tank, and a cleaning water discharge step.
A raw water supply process for disinfection in which raw water is supplied to the disinfectant tank to submerge the object to be disinfected, and
An ozone water generation step of injecting ozone gas into the raw water supplied to the disinfection tank to generate ozone water, and
It has an ozone water disinfection step of performing a disinfection operation of disinfecting an object to be disinfected in the disinfection tank with the ozone water.
In the washing water discharge step, the exposed portion of the object to be disinfected exposed upward from the surface of the washing water due to a decrease in the water level of the washing water discharged from the disinfecting tank is supplied from the outside of the disinfecting tank. There line the shower rinsing operation hurl the raw water in the form of a shower,
Between the washing water discharge step and the disinfection raw water supply step, the rinse water supply step of supplying the raw water as rinse water to the disinfection tank to submerge the object to be disinfected, and the disinfection with the rinse water. It has a rinsing step of performing a rinsing operation for washing the object to be disinfected in the tank, and a rinsing water discharging step of discharging the rinse water from the disinfecting tank.
In the rinse water discharge step, the exposed portion of the object to be disinfected, which is exposed upward from the surface of the rinse water as the water level of the rinse water discharged from the disinfection tank drops, is supplied from outside the disinfection tank. A method for disinfecting an ozone water disinfecting machine, which comprises performing a second shower rinsing operation in which the raw water is showered. A water level gauge is provided in the disinfection tank in advance.
In the washing water discharge step, the water level of the washing water discharged from the disinfection tank is monitored.
The method for disinfecting an ozone water disinfectant according to claim 1, wherein when the water level reaches a predetermined water level at which the entire object to be disinfected is exposed, the shower rinsing operation is performed. The method for disinfecting an ozone water disinfectant according to claim 1 or 2 , wherein a liquid alkaline detergent is used as the detergent. The pre-Symbol ozone water having a higher ozone water drainage Engineering discharged from the sterilization bath,
In the ozone water drainage step, the ozone water discharged from the disinfection tank is supplied from the outside of the disinfection tank to the exposed portion of the object to be disinfected exposed upward from the water surface of the ozone water due to the decrease in the water level. The method for disinfecting an ozone water disinfectant according to any one of claims 1 to 3, wherein the shower rinsing operation of bathing the raw water in a shower shape is performed.

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