JP2006141505A - Medical instrument washing and disinfecting device and medical instrument washing and disinfecting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical instrument washing and disinfecting device capable of efficiently removing micro stains stuck to a medical instrument and performing strong washing and disinfecting treatment. <P>SOLUTION: The medical instrument washing and disinfecting device is provided with: a washing and disinfecting tub 10 for washing the medical instrument; a jetting valve switching device 5 for jetting washing liquid to an endoscope 17 housed for washing in the washing and disinfecting tub 10; and a bubble generator 25 for dissolving gas made into fine air bubbles in the washing liquid supplied to the jetting valve switching device 5 to be an supersaturated state in washing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a medical instrument cleaning / disinfecting apparatus and a medical instrument cleaning / disinfecting method, and more particularly to a medical instrument cleaning / disinfecting apparatus and a medical instrument cleaning / disinfecting method for automatically cleaning a medical instrument such as an endoscope.

  In recent years, endoscopy of the upper gastrointestinal tract such as the esophagus and stomach and the lower gastrointestinal tract such as the large intestine has been rapidly spread recently, and the number of examinations in medical facilities has increased.

  However, cases of secondary infection in which patients who have been examined and treated through endoscopes that are not sufficiently cleaned and disinfected are infected with various viruses have been reported.

  In recent years, it has become clear that Helicobacter pylori, which is said to be the cause of gastric ulcer, is present in the stomach, and it is more important than ever to thoroughly clean and disinfect the endoscope. It has become to.

  However, it is not possible to completely remove mucus etc. just by washing the contaminated endoscope with water, and it is necessary to rub off the dirt by brushing etc. This is troublesome and causes a problem of non-uniform work.

  On the other hand, medical personnel who handle contaminated medical devices are at risk of cross-infection, and it is necessary to ensure that operations can be performed safely and cleanly.

  In particular, contaminants (blood, mucus, secretions, tissue fragments, excrement, drugs, inorganics, etc.) are attached to the used instruments and equipment, and many pathogenic microorganisms (bacteria, This is because a virus is lurking.

  Furthermore, in the past, cleaning and disinfection using glutaraldehyde (GA) or an enzyme cleaner as a disinfectant was common, but it is difficult to handle because it is a harmful chemical to the human body. There was a need for new powerful cleaning and disinfecting agents.

In this regard, in Japanese Patent Application Laid-Open No. 2003-275175, Japanese Patent Application Laid-Open No. 9-108307, and Japanese Patent Application Laid-Open No. 2002-45334, cleaning and disinfection are performed using an alkaline aqueous solution, electrolytic acid water, and electrolytic water having high disinfection and sterilization power. An endoscope cleaning and disinfecting device is disclosed. Further, in JP-A-3-17661, JP-A-2002-336197, and JP-A-2004-215930, cleaning and disinfection is performed using ozone water or active oxygen water having an oxidizing power having a strong disinfection and sterilization power. An endoscope cleaning / disinfecting device is disclosed, and when an endoscope used by a patient is used for the next patient, the endoscope cleaning is performed to prevent secondary infection and to be disinfected or sterilized and cleaned. Disinfection devices are known.
Japanese Patent Laid-Open No. 3-176061 JP-A-9-108307 JP 2002-336197 A JP 2002-45334 A JP 2003-275175 A JP 2004-215930 A

  However, ozone water has a strong disinfecting and disinfecting power, so it can be surely killed in about 1 minute against pathogenic bacteria such as Escherichia coli, but it kills Klebsiella pneumoniae, spores, Bacillus subtilis, etc. In order to make it happen, contact for a longer time is required. In addition, it has been found that bacteria in the human body such as sanguizu streptococci, mutans, pyogenes streptococci, catarrhococcus, candida albigans, enterococci and the like are not easily sterilized by ozone water.

  Therefore, a cleaning / disinfecting method for effectively sterilizing bacteria that may adhere to these medical devices in a shorter time is desired.

  In addition, the dirt attached to the medical device is invisible, and it is important that the dirt of a size that causes pathogenic microorganisms is completely removed. Visible dirt can be removed by brushing or the like, but even when micro dirt is carefully brushed, it cannot be completely removed. It has been clarified that the effect cannot be expected even if disinfection and sterilization is performed with organic contaminants such as blood and protein remaining. In order to effectively use the cleaning disinfectant at the time of subsequent disinfection. It is necessary to completely remove micro-stains sufficiently before performing disinfection and sterilization.

  The present invention has been made to solve the above-described problems, and is a medical instrument cleaning / disinfecting apparatus capable of efficiently removing micro dirt attached to a medical instrument and performing a strong cleaning / disinfecting process. And it aims at providing the washing | cleaning disinfection method of a medical device.

  A medical instrument cleaning / disinfecting apparatus according to the present invention includes a cleaning tank for cleaning a medical instrument, an injection unit for injecting a cleaning liquid to a medical instrument stored in the cleaning tank at the time of cleaning, and an injection unit at the time of cleaning. And a bubble generating unit for dissolving the microbubbled gas until it becomes supersaturated with respect to the cleaning liquid supplied.

  Preferably, the cleaning liquid is ozone water in which ozone is dissolved.

  In particular, the cleaning tank has an ultraviolet lamp for irradiating ultraviolet rays, the medical instrument is immersed in the cleaning liquid in the cleaning tank, and the ultraviolet lamp emits ultraviolet rays to the cleaning liquid, that is, ozone water in which ozone is dissolved during cleaning. Irradiation generates hydroxy radicals.

  In particular, the apparatus further includes a circulation means for supplying the cleaning liquid in the cleaning tank to the injection unit and circulating the cleaning liquid.

  In particular, it has a treatment tank for accumulating the washing liquid in the washing tank, and the washing liquid decomposition treatment means for decomposing the washing liquid in the treatment tank and the high-pressure gas is sprayed and dried on the medical instrument in the washing tank. For further drying.

  In particular, the cleaning liquid decomposition processing means includes an ultraviolet lamp for irradiating the cleaning liquid in the processing tank with ultraviolet light.

  The cleaning / disinfecting method according to the present invention is a cleaning / disinfecting method for a medical instrument, the step of dissolving the gas that has been microbubbled during cleaning until the supersaturated state with respect to the cleaning liquid, and the cleaning liquid in the medical instrument in the cleaning tank. Injecting.

  Preferably, the cleaning liquid is ozone water in which ozone is dissolved.

  In particular, the medical device further includes a step of immersing the cleaning liquid in the cleaning tank and irradiating the cleaning liquid in the cleaning tank with ultraviolet rays to generate hydroxy radicals.

  In particular, the method further includes the step of circulating the cleaning liquid in the cleaning tank and spraying the cleaning liquid on the medical device.

  In particular, the method further includes a step of accumulating the cleaning liquid in the cleaning tank in the processing tank, decomposing the cleaning liquid in the processing tank, a step of decomposing, and a step of drying the medical instrument in the cleaning tank in parallel.

  In particular, in the decomposition treatment step, the cleaning liquid is irradiated with ultraviolet rays.

  The medical instrument cleaning / disinfecting apparatus and the medical instrument cleaning / disinfecting method according to the present invention adheres to a medical instrument by injecting a cleaning liquid in which a microbubbled gas is dissolved to a supersaturated state onto the medical instrument. Thus, it is possible to efficiently remove the micro stains and execute a strong cleaning and disinfecting process.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and detailed description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a diagram schematically illustrating a piping system diagram of a medical instrument cleaning / disinfecting apparatus according to an embodiment of the present invention. In this example, an endoscope will be described as an example of a medical instrument to be cleaned and disinfected.

  A medical instrument cleaning / disinfecting apparatus 1 (hereinafter also simply referred to as apparatus 1) according to an embodiment of the present invention includes a cleaning / disinfecting tank 10, an injection valve switch 5, a cleaning liquid processing tank 20, a bubble generator 25, and ozone. The generator 30, the mixing pump 35, the ozonolysis devices 40 and 45, the dryer 50, the electromagnetic valves V <b> 0 to V <b> 12, and a control circuit 60 that controls the entire apparatus are included. The control circuit 60 includes a CPU (not shown), a storage unit, a power switch, a liquid crystal screen, and the like. Then, the CPU 1 controls the entire apparatus 1 by sending control signals to each component constituting the apparatus 1 in accordance with a control program stored in the storage unit when the power switch is turned on. Perform cleaning and disinfection.

  The cleaning / disinfecting tank 10 has an opening / closing type cleaning tank opening / closing lid 11 for inserting the endoscope 17 on the upper surface and a cleaning liquid for storing the cleaning liquid and immersing the endoscope 17 to perform the cleaning / disinfecting process. And a tank portion 12. Further, in the cleaning layer portion 12, an ultraviolet lamp 14 for irradiating ultraviolet rays, a mounting means 16 for mounting the endoscope 17, and a cleaning liquid in the cleaning tank for flowing and stirring during cleaning A turbulent plate 15 is provided. In FIG. 1, four ultraviolet lamps are shown, and the ultraviolet lamp 14 irradiates ultraviolet rays in response to an instruction from the control circuit 60.

  The injection valve switch 5 receives the supply of the cleaning liquid and efficiently and evenly injects the cleaning liquid onto the endoscope 17 while changing the injection position with respect to the endoscope 17 in the cleaning tank 12. Cleaning and disinfecting in the cleaning tank unit 12.

  The cleaning liquid processing tank 20 is a processing tank for receiving the supply of the cleaning liquid stored in the cleaning tank unit 12 and processing the cleaning liquid, and an ultraviolet lamp that irradiates ultraviolet rays in response to an instruction from the control circuit 60 inside. 21 and a turbulent flow plate 22.

  In response to an instruction from the control circuit 60, the bubble generator 25 discharges the supplied cleaning liquid as bubble water to the injection valve switch 5 via the electromagnetic valve V11 by an on / off operation. Here, bubble water is an aqueous solution in which a gas is made into ultrafine bubbles and dissolved in a supersaturated state.

  The ozone generator (ozonizer) 30 receives a supply of oxygen from an oxygen cylinder (not shown), or receives a supply of oxygen whose oxygen concentration is increased by removing nitrogen from compressed air by using a compressor (not shown). In response to the instruction 60, ozone is generated and output to the mixing pump 35 via the electromagnetic valve V10.

  The mixing pump 35 mixes (mixes) tap water supplied through the electromagnetic valve V9 and ozone from the ozone generator 30 in response to an instruction from the control circuit 60 and outputs the mixed water to the bubble generator 25. When the mixing pump 35 does not execute the mixing operation, it functions as a normal pump, and the cleaning liquid is sent to the injection valve switching unit 5 via the bubble generator 25.

  The ozone decomposers 40 and 45 have a manganese-based catalyst for decomposing ozone gas. If the internal pressure of the cleaning / disinfecting tank 10 and the cleaning liquid processing tank 20 is higher than the external pressure, the ozone gas in the tank is ozone. It is decomposed by the decomposers 40 and 45, rendered harmless and discharged outside.

  The dryer 50 receives the supply of compressed air, injects dry compressed air from which high-pressure moisture has been removed, into the cleaning / disinfecting tank via the electromagnetic valves V0 and V1, and removes water droplets and the like adhering to the endoscope 17. It is for removing.

  Solenoid valves V2, V4, and V5 are provided between the cleaning / disinfecting tank 10 and the cleaning liquid treatment tank 20, and are opened and closed in response to instructions from the control circuit 60. The cleaning liquid in the cleaning / disinfecting tank 10 is sent to the cleaning liquid processing tank 20. Solenoid valves V2, V3, and V11 are used when the cleaning liquid in the cleaning / disinfecting tank 10 is circulated, and the cleaning liquid in the cleaning / disinfecting tank 10 in response to the opening operation instruction from the control circuit 60 is mixed with the mixing pump 35 and It is circulated through the bubble generator 25. The solenoid valves V5, V8, and V12 are used when circulating the cleaning liquid in the cleaning liquid processing tank 20, and the cleaning liquid is circulated through the mixing pump 35 in response to an opening operation instruction from the control circuit 60. . At the time of draining, the control circuit 60 instructs the electromagnetic valve V7 to open, and drains the cleaning liquid in the cleaning liquid processing tank 20.

  FIG. 2 is a flowchart for explaining a cleaning / disinfecting method for a medical instrument according to the first embodiment of the present invention.

  Referring to FIG. 2, first, cleaning and disinfection of the medical device is started (step S0).

  Next, the endoscope 17 is placed in the cleaning tank portion 12 of the cleaning / disinfecting tank 10 (step S1). At this time, the endoscope 17 is placed at a predetermined position by the placing means 16.

  Next, the cleaning tank opening / closing lid 11 is closed (step S2). Thus, preparations for cleaning and disinfecting the endoscope 17 in the cleaning / disinfecting tank 10 (hereinafter collectively referred to as a cleaning tank) are completed.

  Next, bubble water is jetted from the jet valve switch 5 to the endoscope 17 in the washing tank 12 to be washed (step S3).

  FIG. 3 is a diagram for explaining the operation of the medical instrument cleaning / disinfecting apparatus 1 when the endoscope is cleaned using bubble water.

  Referring to FIG. 3, in response to an instruction from control circuit 60, electromagnetic valve V <b> 9 opens and tap water is supplied to mixing pump 35. Then, the tap water is supplied to the bubble generator 25 by the mixing pump 35. The bubble generator 25 is turned on in response to an instruction from the control circuit 60, and is supplied to the injection valve switching device 5 through the electromagnetic valve V11 as bubble water in the bubble generator 25.

  The injection valve switching unit 5 injects high-pressure bubble water pumped up by the mixing pump 35 through the electromagnetic valve V11 to the endoscope 17, and cleans the endoscope 17 while switching the injection position.

  Bubble water is an aqueous solution in which a gas is made into ultrafine bubbles and dissolved in a supersaturated state as described above. By causing the bubble water containing the ultrafine bubbles to collide with the endoscope 17, bubble destruction heat is generated at the moment of the collision, so that germs touching the heat are sterilized.

  Further, when the bubbles burst, ultrasonic waves are generated, which can scrape dirt that cannot be removed by normal cleaning. In addition, the force when the bubbles burst, specifically vacuum / suction force acts, and the surface tension of the fine bubbles acts to effectively peel off and remove attached fat and bacteria.

  Thereby, even if it is invisible dirt, by using bubble water, bacteria attached to the endoscope 17 that cannot be removed by normal cleaning can be peeled off and cleaned and disinfected. Moreover, miscellaneous bacteria can also be sterilized by the heat sterilization effect by the bubble destruction heat.

  In addition, although the example which used normal tap water as bubble water was demonstrated here, the washing | cleaning liquid which melt | dissolved not only tap water but another glutaraldehyde (GA) and an enzyme cleaning agent was used as bubble water with respect to the endoscope 17. It is also possible to inject.

  Next, referring to FIG. 2 again, the endoscope 17 is cleaned by spraying ozone water into the cleaning tank 12 (step S4).

  FIG. 4 is a diagram for explaining the operation of the medical instrument cleaning / disinfecting apparatus 1 in the case of injecting ozone water into an endoscope.

  Referring to FIG. 4, electromagnetic valve V <b> 9 opens in response to an instruction from control circuit 60, and tap water is supplied to mixing pump 35. Further, the ozone generator 30 is turned on, receives the supply of compressed air, generates ozone, and supplies the ozone to the mixing pump 35 via the electromagnetic valve V10. Thereby, in the mixing pump 35, ozone generated by the compressed air generated by the ozone generator 30 is mixed with tap water to become ozone water. And ozone water is supplied to the injection valve switching device 5 through the bubble generator 25 and the electromagnetic valve V11. The ozone water concentration is set to about 0.5 to 2.0 mg / l (0.5 to 2.0 ppm).

  The ozone water in this example is not limited to the case where all ozone is dissolved in the aqueous solution. For example, gaseous ozone becomes mist (containing water) and is dispersed in the gas (air, etc.). It is assumed that such a state is included. In this case, the bubble generator 25 is turned off.

  The injection valve switching unit 5 receives ozone water supplied by the same operation as described above and injects it into the endoscope 17. Ozone water has a strong sterilizing power and is known to sterilize various bacteria and viruses. Thereby, the endoscope 17 can be disinfected and sterilized.

  Then, referring again to FIG. 2, the ultraviolet lamp 14 in the cleaning tank is turned on in response to an instruction from the control circuit 60 (step S5). The endoscope 17 is sterilized and sterilized by being immersed in ozone mist or ozone water as the ozone water is jetted.

  When this ozone water is irradiated with ultraviolet rays, hydroxy radicals having higher oxidizing power than ozone are generated. Therefore, it is possible to disinfect and sterilize bacteria that are difficult to disinfect and sterilize even with ozone water. In addition, although the case where the ultraviolet lamp 14 is turned on in step S5 has been described, the ultraviolet lamp 14 is specifically turned on after step S2 before the bubble water is jetted into the cleaning tank for cleaning. Is also possible. This is because the bacteria attached to the endoscope 17 can be sterilized by irradiation with ultraviolet rays.

  FIG. 5 is a diagram for explaining an oxidation potential indicating the oxidizing power of a typical oxidizing agent.

  Here, relative values based on chlorine values are shown.

  As shown in FIG. 5, it is shown that the hydroxyl radical has stronger oxidizing power than chlorine and further ozone. Hydroxyl radical is a compound generated by the photo-oxidation method by ultraviolet ray (UV) irradiation to ozone water as described above. It oxidizes and decomposes organic compounds, and finally pollutes with water, carbonic acid. Decomposes and extinguishes molecules such as gas and oxygen. In particular, since the molecular bond of the organic compound can be broken by ultraviolet irradiation, it is possible to efficiently decompose and purify even hard-to-decompose organic substances.

  Then, referring again to FIG. 2, the cleaning liquid in the cleaning tank is circulated in the next step (step S6).

  FIG. 6 is a diagram for explaining a case in which ozone water as a cleaning liquid is circulated and ultraviolet radicals are irradiated in the cleaning tank to generate hydroxy radicals.

  Referring to FIG. 6, solenoid valves V2, V3, V10, and V11 are opened in response to an instruction from control circuit 60, and the cleaning solution of ozone water in the cleaning tank is circulated to generate mixing pump 35 and bubble generation. New ozone water is constantly supplied to the endoscope 17 through the injector 25 and the injection valve switch 5. At the same time, the new ozone water is irradiated with ultraviolet rays to generate hydroxy radicals on the endoscope surface and the cleaning liquid, thereby continuing the cleaning sterilization. In addition, this cleaning liquid is affected by the turbulent flow plate 15 during circulation, and when the undegraded filth in the cleaning liquid and ozone water are mixed well and circulated in the cleaning tank, the cleaning liquid is effectively irradiated with ultraviolet rays. Oxidative decomposition with hydroxy radicals.

  Further, ozone is generated in the ozone generator 30 in response to an instruction from the control circuit 60 and supplied to the mixing pump 35 via the electromagnetic valve V10. Then, the circulating cleaning liquid and ozone are mixed to replenish ozone in the cleaning liquid consumed by disinfection and sterilization.

  By this circulation operation, it is possible to effectively perform a disinfection action using hydroxy radicals having higher sterilizing power than ozone water. Ozone water exerts its effect for several tens of minutes, but the effect of the hydroxy radical is only the moment when the hydroxy radical is generated and is not sustained. Therefore, when filth (organic matter, etc.) is mixed or mixed with ozone water in the washing tank, hydroxy radicals are generated in the part irradiated with ultraviolet rays, and have strong oxidizing power and sterilizing power. Will be demonstrated.

  Then, after the cleaning / disinfecting process is sufficiently performed on the endoscope 17, the ultraviolet lamp 14 in the cleaning tank is turned off again with reference to FIG. 2 (step S7). This stops the production of hydroxy radicals. Even when there is undecomposed dirt in the vicinity of the bottom in the cleaning tank, the accelerated oxidation method, that is, the purification action is performed in the next cleaning liquid treatment tank, so that it can be completely decomposed finally.

  Next, the circulation of the cleaning liquid in the cleaning tank is stopped (step S8). Next, the cleaning liquid in the cleaning tank is processed in the cleaning liquid processing tank 20 (step S9). At this time, the solenoid valves V2, V4, V5 are opened in response to an instruction from the control circuit 60, and the filth and cleaning liquid accumulated in the cleaning tank are transferred to the cleaning liquid processing tank 20.

  FIG. 7 is a flowchart in the case of explaining the cleaning liquid process according to the embodiment of the present invention.

  Referring to FIG. 7, in the cleaning liquid processing system according to the embodiment of the present invention, the cleaning liquid processing is first started (step S20). Specifically, as described above, the cleaning liquid in the cleaning tank is sent into the cleaning liquid processing tank 20.

  Next, the ultraviolet lamp 21 in the cleaning liquid treatment tank 20 is turned on (step S21). When the ultraviolet lamp 21 is turned on, hydroxy radicals are generated from ozone water by irradiation of the ultraviolet lamp 21 as described above. Then, as described above, the hydroxyl radical is oxidatively decomposed with respect to the organic compound, and finally the contaminant is decomposed to molecules such as water, carbon dioxide gas, and oxygen to disappear. That is, the cleaning liquid can be completely purified and discharged as harmless water.

  Next, the cleaning liquid in the cleaning liquid processing tank 20 is continuously circulated (step S22).

  FIG. 8 is a diagram for explaining the operation of the medical instrument cleaning / disinfecting apparatus when the cleaning liquid in the cleaning liquid processing tank is circulated.

  Referring to FIG. 8, here, solenoid valves V5, V8, V10 and V12 are opened in response to an instruction from control circuit 60, and inside cleaning liquid treatment tank 20 via mixing pump 35 and bubble generator 25. The cleaning liquid is circulated. At this time, the ozone generator 30 generates ozone in response to an instruction from the control circuit 60 and supplies the ozone to the mixing pump 35 via the electromagnetic valve V10. The cleaning liquid and ozone are mixed by the mixing pump 35. A turbulent flow plate 22 is disposed in the cleaning liquid treatment tank 20, and the cleaning liquid is circulated and stirred in the cleaning liquid treatment tank 20 so that the irradiation of the ultraviolet lamp 21 acts efficiently, and the organic compound is more easily decomposed or purified. Become. As will be described later, when this cleaning liquid treatment is being performed, a drying operation is performed in the cleaning tank, and the dryer 50 is in an ON state as shown in FIG. , V1 is also opened in response to an instruction from the control circuit 60.

  Then, after the cleaning liquid is sufficiently purified, referring again to FIG. 7, the ultraviolet lamp 21 in the cleaning liquid processing tank 20 is turned off in response to an instruction from the control circuit 60 (step S23). Thereby, the production | generation of a hydroxyl radical is stopped and it becomes only ozone water.

Then, the circulation of the cleaning liquid in the cleaning liquid processing tank 20 is stopped (step S24), and the cleaning liquid in the cleaning liquid processing tank is drained (step S25). In this case, it is assumed that the electromagnetic valve V7 is opened in response to an instruction from the control circuit 60. Ozone water is safe because it is naturally decomposed into water (H ₂ O) and oxygen (O ₂ ) and has no residual toxicity. Then, the cleaning liquid process is terminated (step S26). The ozone decomposer 45 decomposes ozone as a gas in the cleaning liquid treatment tank 20 so that the ozone gas generated from the ozone water does not adversely affect the surroundings as described above. Exhausted to the outside.

  FIG. 9 is a flowchart for explaining a case where the drying operation is performed in the cleaning tank when the cleaning liquid is transferred to the cleaning liquid processing tank 20.

  With reference to FIG. 9, drying is started (step S10). Next, compressed air is jetted onto the endoscope 17 in the cleaning tank (step S11). More specifically, the solenoid valves V0 and V1 are opened in response to an instruction from the control circuit 60, the dryer 50 is turned on, compressed air is sent to the washing tank, and the dried air is supplied to the inside of the washing tank. It injects toward the endoscope 17 in. As a result, the water adhering to the endoscope 17 can be dried so as to be removed by wind pressure. And drying is complete | finished and an endoscope is taken out from a washing tank (step S12). Not only compressed air but also ozone gas can be used. If ozone gas is used, a bactericidal action derived from ozone gas can also be expected. In addition, the drying process can be completed earlier by injecting the gas heated using a heater or the like to the endoscope.

  Note that the control circuit 60 turns off the dryer 50 after a predetermined period in the inside to end drying.

  In this example, the cleaning liquid is discharged from the cleaning tank to the cleaning liquid processing tank 20, and the cleaning liquid processing is performed in the cleaning liquid processing tank, and at the same time, the endoscope 17 is dried in the cleaning tank.

  Therefore, since both of these operations can be executed simultaneously in parallel, conventionally, there has been a case where the endoscope has to be dried after the cleaning liquid treatment for purifying the inside of the cleaning tank. Since it can be performed, the endoscope cleaning can be completed more efficiently, and the endoscope can be cleaned and sterilized at an early stage.

(Embodiment 2)
FIG. 10 is a flowchart illustrating a cleaning / disinfecting method for a medical instrument according to the second embodiment of the present invention.

  Referring to FIG. 10, step S0 to step S2 are the same as those described in FIG. After the cleaning tank opening / closing lid 11 is closed, in step S3a, ozone bubble water is injected into the cleaning tank for cleaning (step S3a).

  The ozone bubble water is obtained by converting ozone water into bubble water by the bubble generator 25.

  That is, it is an aqueous solution in which ultrafine bubbles are contained in ozone water. As a result, in the above embodiment, the two-stage configuration in which the ozone water is jetted after the bubble water is jetted is used. The endoscope 17 can be cleaned, the apparatus 1 can be operated efficiently, and the cleaning and disinfecting action can be executed strongly by jetting the cleaning liquid in one stage, so that the endoscope can be operated at an early stage. Cleaning and sterilization can be performed. Since subsequent steps S5 to S9 are the same as those in the first embodiment described in FIG. 2, detailed description thereof will not be repeated.

  In the above description, an endoscope is described as an example of a medical instrument. However, the present invention is not limited to this. For example, the present invention can be applied to various medical instruments such as a surgical knife, surgical tweezers, and endoscope accessories. It is.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which illustrates roughly the piping system diagram of the medical instrument washing | cleaning disinfection apparatus according to embodiment of this invention. It is a flowchart figure explaining the washing | cleaning disinfection method of the medical device according to Embodiment 1 of this invention. It is a figure explaining operation | movement of the medical instrument washing | cleaning disinfection apparatus 1 when wash | cleaning an endoscope using bubble water. It is a figure explaining operation | movement of the medical instrument washing | cleaning disinfection apparatus 1 in the case of injecting to an endoscope using ozone water. It is a figure explaining the oxidation potential which shows the oxidizing power of a typical oxidizing agent. It is a figure explaining the case where the ozone water which is a washing | cleaning liquid is circulated, and an ultraviolet-ray is irradiated within a washing tank and a hydroxy radical is generated. It is a flowchart figure in the case of demonstrating the washing | cleaning liquid process according to embodiment of this invention. It is a figure explaining operation | movement of the medical instrument washing | cleaning disinfection apparatus in the case of circulating the washing | cleaning liquid in a washing | cleaning-liquid processing tank. FIG. 5 is a flowchart illustrating a case where a drying operation is performed in the cleaning tank when the cleaning liquid is transferred to the cleaning liquid processing tank 20. It is a flowchart figure explaining the washing | cleaning disinfection method of the medical device according to Embodiment 2 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Medical instrument washing | cleaning disinfection apparatus, 5 injection valve switching device, 10 washing | cleaning disinfection tank, 11 washing tank opening / closing lid, 12 washing tank part, 14, 21 UV lamp, 15, 22 Turbulent flow plate, 16 mounting means, 17 introspection Mirror, 20 Cleaning liquid treatment tank, 25 Bubble generator, 30 Ozone generator, 35 Mixing pump, 40, 45 Ozone decomposer, 50 Dryer, 60 Control circuit, V0 to V12 solenoid valve.

Claims (12)

A cleaning tank for cleaning medical devices;
An injection unit for injecting a cleaning liquid to the medical instrument stored in the cleaning tank at the time of cleaning;
A medical instrument cleaning / disinfecting apparatus, comprising: a bubble generating unit configured to dissolve a microbubbled gas into a supersaturated state with respect to the cleaning liquid supplied to the ejection unit during the cleaning.   The medical instrument cleaning / disinfecting apparatus according to claim 1, wherein the cleaning liquid is ozone water in which ozone is dissolved. The cleaning tank has an ultraviolet lamp for irradiating ultraviolet rays,
The medical device is immersed in a cleaning liquid in a cleaning tank,
The medical instrument cleaning / disinfecting apparatus according to claim 2, wherein the ultraviolet lamp irradiates the cleaning liquid with the ultraviolet rays during the cleaning to generate hydroxy radicals.   The medical instrument cleaning / disinfecting apparatus according to claim 3, further comprising a circulation unit configured to supply the cleaning liquid in the cleaning tank to the injection unit to circulate the cleaning liquid. A cleaning tank for storing the cleaning liquid in the cleaning tank, and a cleaning liquid decomposition processing means for decomposing the cleaning liquid in the processing tank;
The medical instrument cleaning / disinfecting apparatus according to any one of claims 2 to 4, further comprising drying means for spraying and drying a high-pressure gas on the medical instrument in the cleaning tank.   6. The medical instrument cleaning / disinfecting apparatus according to claim 5, wherein the cleaning liquid decomposition processing means includes an ultraviolet lamp for irradiating the cleaning liquid in the processing tank with ultraviolet rays. A method for cleaning and disinfecting medical equipment,
Dissolving the gas that has been microbubbled during cleaning until it becomes supersaturated with respect to the cleaning liquid;
Spraying the cleaning liquid onto the medical instrument in a cleaning tank.   The medical device cleaning and disinfecting method according to claim 7, wherein the cleaning liquid is ozone water in which ozone is dissolved. The medical device is immersed in the cleaning liquid in a cleaning tank,
The medical device cleaning and disinfecting method according to claim 8, further comprising: irradiating the cleaning liquid in the cleaning tank with ultraviolet rays to generate hydroxy radicals.   The medical instrument cleaning and disinfecting method according to claim 9, further comprising circulating the cleaning liquid in the cleaning tank and spraying the cleaning liquid on the medical instrument. Accumulating the cleaning liquid in the cleaning tank in a processing tank and decomposing the cleaning liquid in the processing tank;
The method for cleaning and disinfecting a medical instrument according to any one of claims 8 to 10, further comprising a step of performing the decomposition treatment and a step of drying the medical instrument in the cleaning tank in parallel.   The medical device cleaning and disinfecting method according to claim 11, wherein the decomposing step irradiates the cleaning liquid with ultraviolet rays.

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