WO2016096818A1

WO2016096818A1 - Disinfectant and sanitization method comprising hydrogen peroxide and a vegetable surfactant

Info

Publication number: WO2016096818A1
Application number: PCT/EP2015/079740
Authority: WO
Inventors: Klaus Klein
Original assignee: SIEFER, Stephan
Priority date: 2014-12-18
Filing date: 2015-12-15
Publication date: 2016-06-23

Abstract

The invention relates to a disinfectant consisting of an aqueous disinfectant solution which contains an oxidant in the form of H₂0₂ and a vegetable surfactant.

Description

DISINFECTANT AND METHOD OF REMOVING WATER PEROXIDE AND VEGETABLE TENSID

The invention relates to a disinfectant.

Furthermore, the invention relates to a method for sterilizing rooms, a device for carrying out the method according to the invention and a system for the sterilization of rooms.

Since the discovery of the transmissibility of diseases by germs in the 19th century, the importance of hygiene in general and of germ control in particular has steadily increased. Especially in hygienically sensitive environments, such as hospitals and medical practices, but also in the food industry, effective control of germs is of vital importance. Spatial germination has proven to be particularly effective in this regard in practice.

From the prior art, for example, methods are known in which a soil germination is performed by closing the space to be sterilized, in particular sealed, and then fumigated. After a predeterminable exposure time of, for example, two hours, the room is considered sterilized. Due to the aggressiveness of the disinfectant used, which usually has comparatively high concentrations of chlorine-containing compounds or ozone, people must not be in this room during the exposure time. After completing the sterilization, ventilate the room to remove the gas used. Then the room can be entered again by people. The disadvantage of this approach is that with the airing and with the entry of people into the room a re-germination takes place. This re-germination takes place so fast that within a very short time the germ status is restored, as it existed before the sterilization.

For the sterilization of air, it is also known to irradiate the air to be sterilized with electromagnetic radiation in the ultraviolet region of the spectrum. For this purpose, air is sucked in by a corresponding device, irradiated and reintroduced into the room. A sterilization of the surfaces in the room, in particular walls, furniture and the like does not take place, so that a recontamination by contact of the air with said surfaces can not be prevented.

In particular, for surface disinfection, it is also known from the prior art to spray them locally with a disinfectant and to clean them by hand, in particular by wiping. For this purpose, wipes or similar cleaning aids are used which have to be sprayed with said disinfectant or have already been pretreated. This is followed by wiping the surfaces to be cleaned. Another disadvantage of this method is that a recontamination takes place. In addition, the quality of the sterilization depends on the care during wiping. In addition, with the help of wiping, not all surfaces are cleaned, be it that they are difficult to access or that they can not be wiped off at all, such as curtains made of fabric, bed linen, tablecloths or the like.

It is also known from DE 10 2010 020 508 A1 an injection device, which is suitable for introducing disinfectants and / or fragrances in a flow of a line system. In this case, the agents, preferably in liquid form, are injected into the conduit system. For this purpose, an injection head is provided, which can be designed in particular as a nozzle and particularly preferably as a hollow cone nozzle. The injection takes place here at intervals. The disadvantage of this is that in the interval pauses in which no fumigation takes place, a recontamination occurs. In addition, it has been found that the resulting from the combination of injection device and disinfectant disinfection performance, especially due to the lack of distributability in the room is not sufficient Disinfection can ensure.

It is therefore the object of the invention to provide a method and a system for the sterilization of rooms, with which achieved a sterilization and re-germination is prevented.

To achieve this object, a method for the sterilization of rooms or areas thereof, in which a disinfectant is used, which comprises an oxidizing agent and a surfactant, in which a suspended aerosol is generated from the disinfectant and continuously introduced into the space to be sterilized at in which the total concentration of the disinfectant in the aerosol is set, wherein in each case a maximum limit value for the individual concentration of the oxidizing agent and of the surfactant in the aerosol is specified.

By the continuous process according to the invention a permanently safe sterilization is achieved and a recontamination effectively avoided. Continuously in the sense of the invention, the duration of the process is arbitrarily long in terms of time, without the need to interrupt the intended use of the space or area to be sterilized. According to the invention, a continuous killing of pathogenic, unhealthy or similar germs is hereby achieved and prevents recontamination for the duration of the method used. In particular, said germs include bacteria, viruses, fungi, spores, fine dusts and the like.

A successful continuous process management for sterilization depends on the synergetic interaction of individual features essential to the invention. Thus, on the one hand, it is necessary to keep the individual concentrations of the components of the disinfectant used below a respective predeterminable limit value. As a result, a process control without impairing the intended use of the space to be sterilized is made possible. The method according to the invention can be used in a large number of fields. Especially in the health sector, there preferably in hospitals, nursing homes, medical practices and the like, in the food industry, there especially in livestock, the processing industry, in particular butcheries, bakeries and the like, and warehousing. Applications in the private sector are also conceivable. The Specified limits may result from experience in each sector. ^■ Alternatively, they can also result from legal regulations. In particular, in areas to be sterilized in which people work in the intended case of use, the respective limit value according to the invention is preferably a legally prescribed limit, which ensures that the use of the individual components in the disinfectant and thus the disinfectant as such for humans no harmful effect unfold. Preferably, the respective limit value is given by the legal occupational exposure limit (AGW, formerly Maximum Occupational Concentration - MAK) for the components of the disinfectant. In areas which are subject to several legal regulations, the respective lower limit value is preferably adhered to. This is particularly the case in the food industry, where both occupational exposure limits and food hygiene regulation (LMHV) limits apply. According to the invention, the total concentration of the disinfectant in the aerosol is chosen so that the individual concentration of both the oxidizing agent and the surfactant are below such a limit. Spatial germination methods known from the prior art typically make use of concentrations which are significantly above the prescribed limits in order to be able to realize sterilization at all. The prevailing opinion in the prior art is therefore that for proper sterilization comparatively high concentrations of active ingredients must be used that are harmful to humans, animals, food and the like. The invention proposes here in deliberate departure from the prior art, a new way.

The Applicant has surprisingly found that a disinfectant at least consisting of an oxidizing agent and a surfactant in a prescribed concentration in the aerosol has never considered possible effectiveness against germs. Disinfection according to the invention is preferably achieved in a surprising manner even at comparatively lower total concentrations. Preferably, a total concentration of 0.01 ml to 0.05 ml of disinfectant / m ^{3 of} room air is sufficient for a spatial disinfection according to the invention. In this case, a concentration of 0.02 ml of disinfectant / m ³ room air has proved to be particularly advantageous. The total concentrations used are thus significantly below the AGW of suitable for the formation of the disinfectant according to the invention oxidizing agents such as in particular, sodium hypochlorite (0.5 ml / m ³ ), hydrogen peroxide (0.5 ml / m ³ ), ozone (0.1 ml / m ³ ) or peroxyacetic acid (10 ml / m ³ ). Likewise, the total concentrations of the disinfectant in the aerosol are well below those for dust in general and for surfactants in particular AGW of about 10 ml / m ³ .

It has also been found that even a volume concentration of the disinfectant is well below the aforementioned 0.01 ml / m ³ - 0.05 ml / m ^{3 of} room air sufficient for complete sterilization. Accordingly, it is preferred to use disinfectant with a concentration between 0.1 and 0.5 μΙ per m ^{3 of} room air

The aerosol used for sterilization is thus not only harmless to humans but also effective against germs and does not affect in any way the intended use of the space to be sterilized, whereby the inventive method provides by its continuous application for an initial sterilization and beyond a resuspension prevented in an advantageous manner. In particular, in health care, the inventive method can thus be carried out continuously without consideration of people present in the room. A recontamination, as occurs in the known from the prior art method can be advantageously avoided with the inventive design, so that in the space to be sterilized even with the introduction of fresh germs in said space, for example by ventilation, a constantly low Germ level can be maintained.

According to the invention, a suspended aerosol is generated from the disinfectant. In contrast, in the prior art, due to the use of nozzles, in particular hollow cone nozzles, it has hitherto not been possible to produce a suspended aerosol. According to the invention, the disinfection center! mixed with air. Air serves as a carrier medium for the disinfectant. The disinfectant can be distributed in a simple manner in the space to be sterilized or even in parts thereof by way of air convection. Advantageously, a sterilization of the air itself and all surfaces in the space to be sterilized is thereby achieved. In particular, surfaces which have been sterilized insufficiently in the prior art usually by wiping, can be almost completely sterilized by the invention. Furthermore, it is through the use of air as a carrier medium now also possible to sterilize surfaces that can not be sterilized by merely wiping. These include in particular rough surfaces, porous surfaces, textured surfaces, textife surfaces, in particular curtains, bedding, clothing and the like. The aerosol penetrates into microscopic structures of these surfaces and also sterilizes them in places that are inaccessible to conventional methods. Preferably, air in the form of ambient air is used. Alternatively to or in combination with the ambient air, it may be provided to use a specially prepared air-like gas mixture. Air-like in this context means that the gas mixture contains nitrogen and oxygen in a proportion sufficient for the metabolism of humans and / or animals. In particular, in the event that the ambient air is not or not suitable as such for the generation of the aerosol or for other reasons can not be used as a carrier medium, this is particularly advantageous.

Floating ability of the aerosol is advantageous because it improves the distribution availability of the aerosol. In particular, it is also possible to apply aerosol to remote areas of the room without the disinfectant first sinking to the floor. In the production of the aerosol, the disinfectant is therefore sprayed according to a preferred embodiment of the invention to fine droplets with a diameter below 10 pm. Advantageously, a buoyant and stable aerosol can be produced in this way. It has also been found that droplets with such a diameter, in particular in the case of structured and / or porous surfaces, as occur in particular in the case of textiles, lead to particularly effective sterilization due to improved material handling. To further improve material handling, it is preferred to produce droplets with a diameter below 5 pm and more preferably between 1 pm and 3 pm.

According to the invention, the aerosol is continuously introduced after its production in the space to be sterilized. This can be done directly and directly according to a preferred embodiment of the invention. For this purpose, a device suitable for carrying out the method can be set up in the space to be sterilized or the area to be sterilized. Preferably, such a device is mobile adapted to sterilize various rooms or areas of space as desired or necessary. For this purpose, the device preferably has moving means. The moving means may be preferred as rollers, wheels, runners or the like be educated. The method according to the invention is preferably scalable for each room size. For this purpose, according to a preferred embodiment of the invention, the performance of the device is adapted to the size of the space to be sterilized. According to a further be combined with the aforementioned embodiment of the invention, the number of drawn up in a room devices for the purpose of Sca ^'ierbarkeit adapted to the size of the room. In this way it is possible to adapt the inventive method to any room size.

According to an alternative embodiment of the invention, the aerosol is introduced indirectly into the space to be sterilized. It is not necessary here to set up the device in the space to be sterilized. Rather, this is only line technology associated with the space to be sterilized. Such a procedure advantageously allows a spatial decoupling of the aerosol production from its place of use. This results in a whole series of advantages. On the one hand, any effects associated with aerosol production, such as, in particular, a perceived unpleasant noise development in the space to be sterilized are imperceptible. This is particularly beneficial in the hospital where people who are in need of rest are typically treated. On the other hand, the device is also optically not present in the space to be sterilized, whereby the appearance of the room is not unduly disturbed. In particular, in medical practices, in which much emphasis is placed on the interior regularly, such decoupling is beneficial. Preferably, the device is technically connected to more than one room, which can be sterilized with a device several rooms. Preferably, the arrangement of the device in an existing ventilation system of a building, which connects a plurality of rooms together. Preferably, the device is placed at a junction of the ventilation system to equally sterilize as many rooms as possible. The present in such a ventilation system air flow flows around the device. It serves advantageously as a carrier medium for the disinfectant in the aerosol.

The invention further relates to a disinfectant for use in the method according to the invention. This is characterized by a special active ingredient combination of at least one oxidation center! and a surfactant. The Applicant has found that the combination of active substances according to the invention exhibits a synergistic effect in the control of germs and is therefore particularly effective. It is thereby possible to use comparatively low concentrations of disinfectant for sterilization, which makes possible a harmless process for humans, continuous process control in the first place.

Without being limited to this mechanism, it is assumed on the applicant side that the oxidizing agent attacks the outer structures of the respective germ and thus allows the surfactant access to the interior of the germ, where it can unfold its germ-damaging effect with comparatively high effectiveness ,

According to a preferred embodiment of the invention, the oxidizing agent of hydrogen peroxide (H ₂ 0 ₂ ) is formed. It is characterized in an advantageous manner by a comparatively high standard electrode potential (redox potential under standard conditions) of 1.78 V, which makes it one of the strong oxidizing agents. In addition to its role as an oxidizing agent, hydrogen peroxide is particularly advantageous in the field of soil decontamination because it is reduced to water (H ₂ O) during sterilization, so that no harmful by-products are formed. Further, hydrogen peroxide tends to decompose into water and oxygen as part of a disproportionation reaction. In the field of spatial decontamination, this behavior has proven to be advantageous in addition to the actual sterilization, since a successive enrichment of the ambient air with oxygen takes place, which is generally perceived by the people staying in the room as pleasant and "fresh" the effectiveness of the disinfectant against particulate matter with respect to the air freshening a particularly positive synergistic effect.

The surfactant used according to the invention as a component in the disinfectant is, according to a preferred feature of the invention, a vegetable surfactant. In this context, plant-based means that the surfactant can be obtained from vegetable raw materials, in particular fats. It can preferably be provided that the disinfectant contains more than one surfactant in order to achieve the broadest possible disinfecting efficacy. It has been found in this regard that different surfactants are different effective against different types of germs. Preferably, it is provided here that all surfactants used in the disinfectant from a single plant source are recoverable. This may be present in particular coconut oil. The Applicant has found that the surfactants obtainable from the fatty acids contained in coconut oil, in particular the carboxylates of palmitic, lauric, myristic and oleic acids, have a particularly high activity and a broad spectrum in the control of germs.

It has been shown in efficacy tests of the disinfectant that the effectiveness of the disinfectant on the type and the exact quantitative composition of the individual components of the disinfectant is dependent. It is possible in principle to produce the aerosol according to the invention both from a disinfectant in the solid state and in the liquid state. However, it is preferred to form the disinfectant as an aqueous solution because of its easier handling. Preferably, exclusively deionized water is used for this purpose in order to provide the purest possible disinfectant, and in this way to avoid possible side effects or side reactions with the active ingredients. The disinfectant preferably comprises at least 95% by weight to 98% by weight of fully deionized water, 1.5% by weight to 4.9% by weight of hydrogen peroxide and 0.1% by weight to 0.5% by weight of at least one surfactant. According to a particularly advantageous embodiment of the invention, the disinfectant consists of at least 97% by weight of deionized water, 2.7% by weight of hydrogen peroxide and 0.3% by weight of a surfactant mixture obtainable from coconut oil. The aforementioned compositions have proven to be particularly advantageous in terms of the sterilization time, the sterilization efficiency and the germicidal spectrum.

According to a particularly preferred embodiment of the invention, it is provided to attach the disinfectant ozone as a further oxidizing agent. In terms of the process, this can be realized either subsequently in the course of the degermination process or already in advance of the process by providing an ozone-containing disinfectant. In the electrochemical series, the ozone with a standard electrode potential of 2.075 V is higher than that of hydrogen peroxide and accordingly is a stronger oxidizing agent. The introduced in the disinfectant concentration of ozone is also chosen in the sense of carrying out the method according to the invention that it is not harmful to health in the aerosol for humans. It has been found that such a concentration of ozone in conjunction with the hydrogen peroxide contained in the disinfectant, the total redox potential increased up to 2.86V. It is possible by the aforementioned combination of oxidants to increase the redox potential above the value of their individual components, so that the total potential in a synergistic manner reaches the standard electrode potential of fluorine.

The invention further relates to a device for carrying out the method according to the invention. According to the invention, the device has a disinfectant tank for providing a disinfectant. The disinfectant tank is preferably connected by line technology with a reservoir. The storage tank is used to fill the disinfectant tank. The capacity of the reservoir is adaptable to the size of the device. Depending on the size of the device, it typically takes up between 10 I and 20 L of disinfectant. However, as a function of the space / space to be sterilized, substantially larger containers are also conceivable. Preferably, reservoir and disinfectant tank are connected to each other with the interposition of a pump. The pump may preferably be designed as a peristaltic pump, diaphragm pump or the like. By means of the pump, the disinfectant is preferably pumped from the reservoir into the disinfectant tank. This can preferably be done automatically. For this purpose, the disinfection agent tank has a level sensor. For the intended process control, it is preferred on the device side that a certain, predefinable fill level level is maintained in the disinfectant tank. In order to maintain this level within the disinfectant tank, the level sensor is preferably provided. This is control technology connected to the pump, so that is automatically pumped from the reservoir falls below the Fülistandhöhe automatically disinfectant to comply with the necessary for proper functioning, in particular the Zerstäubungsmembran liquid level within the disinfectant tank.

The device according to the invention further comprises a line connected to the disinfectant tank aerosol generating unit for generating an aerosol from the disinfectant. According to a preferred feature of the invention, the aerosol generating unit has a sputtering membrane. This is preferably designed such that it can oscillate in an adjustable frequency. The frequency is preferably set as a function of the quantity of aerosol to be generated. Further preferably, the frequency may vary depending on the size of be set generating disinfectant droplets. Preferably, it is provided to allow the sputtering membrane to oscillate at a frequency in the ultrasonic range. As a result, particularly small disinfectant droplets in the range below 10 pm can be generated.

According to the invention, the device furthermore has a ventilation unit connected in line with the aerosol generating unit for sucking in the ambient air and for discharging the aerosol. By means of this, the room air, preferably the ambient air, is sucked in and moved past the aerosol generating unit so that droplets of disinfectant produced by the aerosol generating unit can be introduced into the air stream and then returned to the space to be sterilized.

As already described, ozone can be added to the disinfectant during continuous operation. For this purpose, the device has an ozone generating unit. The ozone generating unit may preferably be in the form of ozone candles. Preferably, the ozone candles are conductively connected to the disinfectant tank for introducing the ozone generated in the disinfectant. In addition to ozone candles, other ozone generating units known from the prior art can also be used. These can be operated either alone or in combination with each other.

Preferably, the device has an error output unit. This serves to display errors associated with the operation of the device as a whole or of the individual components. In particular, these may be errors in terms of the level in the disinfectant tank. This can be caused by a defect in the pump, the level sensor or similar. Furthermore, errors regarding the aerosol generating unit may be displayed. In particular, a membrane defect can be displayed. Also errors in connection with the ventilation unit, in particular a defective drive or the like, can be displayed. Overall, this leads to a simplification of maintenance and possibly a repair of the device, since sources of error can be detected and displayed directly. Preferably, the error output unit is designed as an LED field. Preferably, it is provided to assign each component a different color LED. Particularly preferred are errors of the disinfectant tank by means of a green LED displayed. Further preferably, errors of the aerosol generating unit are indicated by means of a red LED. Also preferably, faults of the ventilation unit are indicated by means of a yellow LED.

According to a particularly preferred embodiment of the invention, the error output unit is designed as a display unit. Preferably, it is a touch display to view different fault statuses display. For this purpose, the device has a data memory in which error messages are retrievably stored.

According to a preferred embodiment of the invention, the device further has a control device. This serves in particular to control the individual components. In particular, so that liquid flows between stock be kept r and disinfectant tank controlled. Furthermore, the liquid flow from the disinfectant tank to the aerosol generating unit can be controlled by the control device. For this purpose, the control device may be connected to control with pumps and / or valves and / or other flow-regulating devices. The provision of a control device advantageously allows an automated operation of the device according to the invention. As a result, in particular the maintenance effort can be reduced and the overall efficiency of the method can be improved. According to a further preferred embodiment of the invention, the control device can be designed to detect fault conditions. For this purpose, the control device is connected to corresponding sensors. For this purpose, these sensors can preferably be arranged in the individual components. Furthermore, the control device is connected to the error output unit for this purpose. Previously detected error conditions can thereby be reported to the error output unit, which displays them in such a case.

Furthermore, the invention relates to a system for the sterilization of rooms or areas thereof.

The system consists of a device according to the invention and a disinfectant according to the invention. By the system according to the invention a permanently safe sterilization is achieved and a recontamination effectively avoided. The unknown from the prior art synergistic combination of Device according to the invention and disinfectant according to the invention make possible the continuous process control of the method according to the invention. The preferred features of the individual components of the system according to the invention act synergistically for an overall further improvement of the system according to the invention beyond the sum of its individual parts.

More particularly, the invention relates to a method for sterilizing rooms or areas thereof, wherein a disinfectant is used, which comprises an oxidizing agent and a surfactant, in which a suspended aerosol is generated from the disinfectant and continuously introduced into the space to be sterilized in which the total concentration of the disinfectant in the aerosol is set, wherein in each case a maximum limit value for the individual concentration of the oxidizing agent and of the surfactant in the aerosol is specified.

It is preferred that between 0.01 and 0.05 ml of disinfectant per 1 m ^{3 of} room air are atomized by means of a membrane oscillating with an ultrasonic frequency to droplets with a diameter below 10 pm.

It is preferred that the aerosol consists of a disinfectant at least consisting of 95 to 98 wt .-% deionized water, 1, 5 to 4.9 wt .-% H ₂ 0 ₂ and 0.1 to 0.5 wt .-% at least one surfactant, wherein between 0.01 and 0.05 ml of disinfectant per 1 m ^{3 of} room air are atomized by means of a membrane oscillating at an ultrasonic frequency to droplets with a diameter of less than 5 pm.

It is further preferred that ozone is generated and introduced into the disinfectant prior to the generation of the aerosol.

The invention also relates to a disinfectant for use in accordance with the invention, comprising an oxidizing agent and a surfactant.

It is hereby preferred that the disinfectant is formed as an aqueous disinfectant solution in which the oxidizing agent is present as H ₂ 0 ₂ and the surfactant as a vegetable surfactant. It is further preferred that the disinfectant solution has from 95 to 98% by weight of deionized water, from 1.5 to 4.9% by weight of H ₂ O ₂ and from 0.1 to 0.5% by weight of at least one vegetable surfactant ,

In addition, it is preferred that the aqueous disinfectant solution comprise further vegetable surfactants, all of the surfactants contained in the disinfectant solution being obtainable from coconut oil.

It is further preferred that the aqueous disinfectant solution has another oxidizing agent in the form of ozone.

The invention also relates to a device for carrying out the method according to the invention, comprising a disinfectant tank for providing a disinfectant, an aerosol generating unit connected to the disinfectant tank for generating an aerosol from the disinfectant and a ventilation unit connected to the aerosol generating unit for sucking in ambient air and for discharging the air aerosol.

It is preferred in this case that the aerosol generating unit has a sputtering membrane designed to be oscillatable with an ultrasonic frequency.

Device side further preferred is an ozone generating unit, which is connected in terms of line technology with the disinfectant tank for introducing the ozone generated in the disinfectant.

The invention also relates to a system for the sterilization of rooms, comprising a disinfectant according to the invention and a device according to the invention.

According to another embodiment, the invention relates to a method for disinfecting medical tools and / or body parts.

In addition to soil decontamination, another important area of hygiene is the targeted disinfection of particularly exposed objects that are regularly brought into contact with the human body, or body parts, especially the hands and feet. Said articles are primarily medical tools, in particular surgical surgical instruments or dental tools. The danger of a Infection with the use of improperly disinfected tools or body parts is relatively high due to the direct exposure. In this context, in particular, the increasing resistance of the germs against common antibiotics and disinfectants has an effect. Hospitals are particularly vulnerable in this regard and therefore endeavor to use multidrug-resistant agents such as MRSA (methicillin-resistant Staphylococcus aureus), VRSA (vancomycin-resistant Staphylococcus aureus), MRGP (multi-resistant gram-positive bacteria) or MRGN (multi-resistant gram-positive bacteria). negative bacteria).

It is known in this context, the hand disinfection by means of liquid disinfectant. Disinfectant dispensers should be located at each entrance and exit of sanitary areas, such as patient rooms. Medical staff, patients and other visitors are encouraged to disinfect before and after any potential exposure. However, this requires a special procedure, with which the non-medical staff is unfamiliar and the medical staff often only sporadically complies due to the time required. In addition, the hands usually remain moist after disinfection. Often this leads to the fact that the hands are dried by means of non-sterile aids, in particular garments. The result is in any case an insufficient disinfection and a relatively high transmission risk of infections.

The disinfection of surgical instruments also requires improvement. It is common practice to use a separate sterile and sealed cutlery set for each operation. After opening the packaging, the individual instruments are placed on a shelf, in the case of use the surgeon enough, after use, put back on the shelf. When used again, the same instrument is used. A problem in this context is that the risk of contamination of the cutlery, e.g. by the air or lack of disinfection of the filing with increasing duration of operation steadily increases. Also, operating in naturally unsterile environment, especially in the ear-nose-throat area is problematic. Pathogens can be transported unintentionally via the surgical instruments in not yet infected areas.

Unfortunately, to date, all approaches to medical device have occurred during the Disinfecting surgery and thus keeping it sterile proved impracticable.

It has been found that the above-described disinfectant is not only suitable for the sterilization of rooms, but also for the disinfection of medical tools, preferably surgical instruments, dental tools and / or covered and uncovered body parts, in particular hands and feet.

Accordingly, a method is proposed in which a disinfectant is used, which comprises an oxidizing agent and a surfactant, in which a suspended aerosol is produced from the disinfectant and continuously brought into contact with the object to be disinfected and / or the body part, wherein in each case a maximum limit for the individual concentration of Oxidafionsmittels and the surfactant in the aerosol is given. "Continuously contacting" with respect to the disinfection of medical tools, preferably surgical instruments, dental tools and / or of covered and uncovered body parts, especially hands and feet, means that the aerosol is non-stop at least for a minimum period of time appropriate to disinfection the object or body part to be disinfected is contacted.

By means of the method according to the invention, it is possible for the first time to disinfect medical tools and body parts completely and in a user-friendly manner. The aerosol also passes without problem to those places that can not be disinfected, for example in the context of a normal hand disinfection or only with the correct movement technique of the hands. In particular, the palm of the hand with liquid disinfectants is insufficiently disinfectable. The Papillarleisten the palm are usually arranged such that in each case between two Papillarleisten a furrow is formed. The distance of the Papillarleisten leads to a kind of lotus effect, which liquid due to their surface tension can not penetrate into the furrows. Germs that have accumulated in these furrows can not be combated with conventional disinfectants, therefore, or insufficiently. However, in contrast to liquid disinfectants, the aerosol according to the invention penetrates without problem into skin furrows of all kinds and also causes an almost complete disinfection there. In addition, in the disinfection according to the invention by means of the aerosol no moisture film on the surface to be disinfected Object or body part, whereby this advantageously does not have to be dried after complete disinfection. This also effectively minimizes the risk of re-contamination.

Preferably, a disinfection according to the invention is achieved in a surprising manner already at comparatively lower total concentrations. In principle, a disinfection at a total concentration of 0.01 ml to 0.05 ml of disinfectant / m ^{3 of} room air, which has already proven itself in the spatial disinfection, reachable. Preferably, however, a higher total concentration is set for the disinfection. The duration of the required exposure time to achieve a complete disinfection is thereby advantageously shortened. In this respect, it is preferable to use total concentrations that are sufficient for the desired reduction of the exposure time and harmless to humans. For the preparation of the aerosol, it is therefore preferable to atomise between 0.1 to 2.0 ml of disinfectant per m ^{3 of} air into droplets. Particularly preferred are total concentrations between 0.3 to 1, 0 ml / m ³ , more preferably 0.5 to 0.7 ml / m ³ , the aforementioned total concentrations are well below the AGW for aerosols of 10 ml / m ³ and are insofar as classified as safe for health.

According to a preferred feature of the invention, the aerosol is contacted with the object or body part to be disinfected for a minimum period of time. The minimum duration is the time required to achieve near complete disinfection. This depends primarily on the type, size and amount of the objects or body parts to be disinfected and on the amount and total concentration of the aerosol. If one of the preferred amounts and total concentration of the aerosol is adjusted, the minimum duration, depending on the other factors, is between 20 and 60 seconds, preferably between 20 and 30 seconds. Even a minimum duration of less than 10 seconds can be achieved with a corresponding amount of aerosol. After reaching the minimum duration, the objects are disinfected and can be removed from the exposure area of the aerosol and immediately used as intended. Alternatively, the objects may remain in the exposure region of the aerosol beyond the minimum duration. This will give the objects their disinfected state and can be used if needed.

According to a preferred embodiment of the invention, 10 to 500 ml / h of aerosol generated and brought into contact with the object to be disinfected. Here, the amount can be adapted to the application. In a continuous disinfection, as provided in particular for the device disinfection, aerosol quantities of 10 to 50 ml / h are sufficient. However, if the duration of disinfection plays a role, as is the case in particular with the disinfection of body parts, it is intended to contact them with a larger amount of disinfectant. According to the invention, the method according to the invention is intended to replace the disinfection method known from the prior art by means of a liquid disinfectant dispenser. As a rule, doctors and nursing staff should disinfect their hands when entering and leaving the sickroom. To be competitive in this area, the duration required for the disinfection should not exceed 30 seconds, preferably 10 seconds. In such a case, it is preferred to generate the aerosol in an amount of 250 to 500 ml / h and to contact with the object to be disinfected. This makes it possible to reduce the duration of the disinfection to less than 30 seconds. Particularly preferably, the aerosol is produced in an amount of 400 to 500 ml / h and contacted with the object or body part to be disinfected. This reduces the duration of disinfection to less than 10 seconds.

According to a preferred feature of the invention, the disinfectant is atomized in the preparation of the aerosol to a droplet size with a mean diameter below 10 μΐτι, preferably below 5 μηι. In this way, on the one hand, a suspended aerosol is produced and, on the other hand, it is ensured that the entirety of the aerosol can also reach areas which are difficult to access, such as, in particular, skin or material furrows, and can subsequently disinfect them.

In a further development of the device described above, for the purpose of disinfecting medical tools, preferably surgical instruments, dental tools and / or body parts, such as in particular hands and feet further proposed, the device with an application unit for receiving the objects to be disinfected or body parts and contacting with to equip the aerosol.

Accordingly, there is a device with a disinfectant tank for providing a disinfectant, one with the disinfectant tank line-connected aerosol generating unit for generating an aerosol from the disinfectant, a line connected to the aerosol generating unit ventilation unit for sucking ambient air and for discharging the aerosol from the aerosol generating unit, and a line connected to the aerosol generating unit application unit, which provides a disinfection area in the form of a volume space, said the Voiumenraum has a first opening for introducing the aerosol on the one hand and a second opening for introducing and removing the object to be disinfected and / or body part on the other.

According to the invention, the device further includes a aerosol generating unit connected to the disinfectant tank for generating an aerosol from the disinfectant. According to a preferred feature of the invention, the aerosol generating unit has a sputtering membrane. This is preferably designed such that it can oscillate in an adjustable frequency. The frequency is preferably set as a function of the quantity of aerosol to be generated. Further preferably, the frequency can be adjusted depending on the size of the disinfectant droplets to be generated. Preferably, it is provided to allow the sputtering membrane to oscillate at a frequency in the ultrasonic range. As a result, particularly small disinfectant droplets in the range below 10 pm can be generated.

According to a particularly preferred feature of the invention, the aerosol generating unit may have at least two ultrasonic sputtering membranes. Advantageously, comparatively large quantities of aerosol can be produced in a short time. As a result, the minimum duration required for the disinfection can be reduced in an advantageous manner. Basically, the number of sputtering membranes is not limited and can be varied depending on the size of the room, the amount and / or the objects / body parts to be disinfected and the desired minimum duration.

According to an alternative embodiment of the aerosol generating unit, it has a heating element. In this case, the aerosol is generated in that by means of the heating element, the disinfectant is evaporated. As a result, comparatively large aerosol concentrations and / or quantities of aerosol can be obtained in a simple manner produce. Preferably, the heating element is designed as an electric heating element, particularly preferably as an electric heating cartridge.

According to a preferred feature of the invention, the volume space is adapted in its dimensions to the objects to be disinfected. With regard to the disinfection of body parts, it is preferred here to replicate the volume space in its spatial configuration to the body part to be disinfected. In this case, it is provided in particular to form the volume space in the form of a hand, the right and / or the left, in which the user can insert one or both hands.

Of course, the disinfection of body parts is not limited to hands. A special case arises in particular in the case of "surgical" disinfection, whereby it is provided that not only the hands, but also the arms are at least partially disinfected, It is therefore provided according to a preferred embodiment of the invention, a volume space corresponding to It is envisaged that the user can insert his arms into the volume space at least to a depth of 60 cm, whereby the volume space is preferably tubular or shaft-shaped and serves to receive the arms of the user Invention also meets the relatively high requirements of a "surgical" disinfection and leads advantageously to a complete disinfection of the particular in terms of germ transmission in surgical procedures exposed body parts.

Likewise, it is possible to recreate certain portions of the volume space of the mold of medical tools. In this case, it is provided in particular to form individual sections within the volume space, which are tailored in terms of their shape and number to a standardized set for surgical instruments. It is also provided here to arrange the volume space interchangeable within the application unit. As a result, the device is advantageously designed for a variety of objects to be disinfected, whereby the disinfection process is improved overall.

According to a preferred feature of the invention, the first opening is formed as a nozzle. As a result, the inflow velocity of the aerosol is increased in the disinfection area, whereby the distribution of the aerosol in the Disinfection area is improved. As a result, the disinfecting effect is advantageously further improved.

According to a further preferred feature of the invention, the volume space has a multiplicity of first openings. The first openings can be distributed uniformly over walls of the volume space. Equally, this means in particular that immediately adjacent first openings are arranged equidistant from each other. As a result, the uniform distribution of the aerosol in the volume space is further improved. Alternatively, the first openings are arranged heterogeneously on the walls of the volume space. This results in particular with the special design of the shape of the volume space the possibility to arrange a comparatively large number of first openings in areas to arrange the areas of the object to be disinfected with increased probability of contamination in the immediate vicinity. This ensures that particularly hazardous areas are reliably disinfected. In particular, even if the prescribed minimum period is not met. In the case of hand disinfection, it could be provided to arrange a comparatively large number of first openings in the vicinity, preferably opposite, the palm of the hand. In contrast, the wall of the volume space facing the back of the hand could have a reduced number of first openings.

According to a preferred embodiment of the invention, the device further has a control device. This serves in particular to control the individual components. In particular, it can be used to control liquid flows between the reservoir and the disinfectant tank. Furthermore, the liquid flow from the disinfectant tank to the aerosol generating unit can be controlled by the control device. For this purpose, the control device may be connected to control with pumps and / or valves and / or other flow-regulating devices. The provision of a control device advantageously allows an automated operation of the device according to the invention. As a result, in particular the maintenance effort can be reduced and the overall efficiency of the method can be improved. According to a further preferred embodiment of the invention, the control device can be designed to detect fault conditions. For this purpose, the control device is connected to corresponding sensors. These sensors can be preferred in the Individual components can be arranged. Furthermore, the control device is connected to the above-described error output unit for this purpose. Previously detected error conditions can thereby be reported to the error output unit, which displays them in such a case.

According to a preferred embodiment of the invention, the aerosol flow from the aerosol generating unit to the application unit can be controlled by the control device. For this purpose, the control device is preferably connected to the ventilation unit and the aerosol generating unit control technology. As a result, the flow rate of the aerosol and the amount of aerosol generated can be automatically adapted to the object to be disinfected. Advantageously, this can improve the disinfecting effect and reduce the required minimum duration.

According to a preferred embodiment of the invention, the control device is connected to a control unit control technology. The operating unit is preferably designed to be operable by the user. Preferably, the disinfection process can be activated by means of the operating unit. It has for this purpose a user-side actu bar trained switch. Alternatively or in combination herewith, the operating unit preferably has a sensor. The sensor is used for automated activation of the disinfection process. Preferably, the disinfection is started by the control device as soon as the sensors have detected an object to be disinfected within a predeterminable range. For this purpose, the sensors, ais light sensors, thermal sensors and / or touch sensor may be formed. Preferably, at least one light sensor is arranged within the application unit in the region of the second opening, so that the introduction of an object to be disinfected into the application unit is detected by the sensor. Alternatively or in combination herewith, it is preferably provided to arrange a touch sensor, preferably a pressure sensor, on the user side on the outer wall of the device. This enables the user to activate the disinfection independently. Preferably, the disinfection is activated by means of the pressure sensor. By means of the light sensor it is checked whether objects to be disinfected are in the disinfection area. Preferably, the disinfection is started only if objects are also in the disinfection area. Are there no objects in the disinfection area, it is preferably provided that the user on the Error dispensing unit an error message is issued, in the case of hand disinfection, it is provided in this preferred case, to arrange the pressure sensor in an area of the device, which corresponds to the position of the knees or feet of an average user. In this case, the user can introduce his hands to be disinfected in the disinfection area, the hands are detected by the light sensor and press the pressure sensor by means of a foot or a knee. In the case of foot disinfection, on the other hand, it is intended to activate the pressure sensor by hand and to detect the proper positioning of the feet by means of the light sensor. The arrangement of the sensors results accordingly.

According to a preferred embodiment of the invention, the control device detects the activation time of the disinfection to the second, preferably millisecond accurate, and calculates by means of a predetermined minimum duration to the second, preferably millisecond accurate, an end time for disinfection. Preferably, different values for the minimum duration to be used are stored in the control device as a function of the object to be disinfected. More preferably, the user can retrieve and select the respective minimum duration via the operating unit. The operating unit preferably has a touch display for this purpose. When the end time is reached, the disinfection process is automatically stopped by the control unit. Preferably, the user is notified of reaching the end time. For this purpose, the control device is preferably connected in terms of control technology with suitable signal units, such as, in particular, a loudspeaker for generating an acoustic signal and / or an LED for generating a visual signal.

Preferably, the device according to the invention can be operated simultaneously both for soil disinfection and for disinfection. For this purpose, the generated aerosol stream is preferably partially introduced into the space to be sterilized and partially fed to the application unit. In this case, the aerosol is preferably produced in the concentration required for spatial germination. Preferably, the aerosol is then concentrated in the application unit itself and / or in an intermediate concentration unit to the preferred concentration for disinfection. According to an alternative embodiment of the invention, the device has either two separate aerosol generating units or an aerosol unit with line separate from each other areas for generating the aerosol for the spatial disinfection on the one hand and the generation of the aerosol for disinfection on the other. For this purpose, the disinfectant is partially supplied to the respective aerosol generating units or the separate areas.

Both the ratio of the aerosol stream according to the first alternative and the disinfectant streams according to the second alternative can be set and controlled via the control device.

The invention will be explained in more detail below with reference to an embodiment which is not intended to limit the person skilled in the art. Showing:

1 shows a device according to the invention for carrying out the method according to the invention according to a first embodiment in a schematic representation.

2 shows a device according to the invention for carrying out the method according to the invention in a second embodiment in a schematic representation.

FIG. 1 shows a device 1 according to the invention with a storage container 2. The storage container 2 is connected to the disinfectant tank 3 by piping. The connection of the disinfectant tank 3 and the reservoir 2 is realized in the present example with the interposition of a peristaltic pump 5. In the present case, the disinfectant tank 3 has a fill level sensor 4. The fill level sensor 4 is connected with the peristaltic pump 5 in terms of control technology. In this way, when falling below a predetermined level in the disinfectant tank 3 automatically disinfectant from the reservoir 2 spent in the disinfectant tank 3. As a result, a continuous operation is advantageously made possible.

The disinfectant is formed in this embodiment as an aqueous solution. It therefore consists of 97% by weight of demineralized water, 2.7% by weight. Hydrogen peroxide and 0.3% by weight of coconut oil-based surfactants. Such an active ingredient combination has proven to be particularly effective in terms of effectiveness against common germs, so that comparatively low concentrations lead to a substantially complete sterilization. In addition, the aforementioned disinfecting solution has a comparatively broad anti-microbial spectrum. It has been found to be equally effective against bacteria, viruses, spores and fungi. Furthermore, the use of hydrogen peroxide causes an air freshening due to the formation of oxygen, which is perceived by persons present as pleasant.

In the present case, the disinfectant tank 3 is conductively connected to an ozone generating unit 6. The ozone generating unit 6 is presently designed in the form of an ozone candle. The ozone produced in the ozone candle is introduced into the disinfectant solution. As a result, the ozone formed dissolves at least partially in the disinfectant. The thus modified disinfectant is supplied to the aerosol generating unit 7. In the present case, the aerosol generating unit 7 has a sputtering membrane (not shown). The sputtering membrane oscillates at a frequency in the ultrasonic range. As a result, disinfectant droplets can be produced with a diameter of 3 pm. It has been found that such a droplet size is particularly advantageous in terms of the levitation ability of the aerosol. Such an aerosol also reaches areas of the space to be sterilized, which are relatively far away from the device 1 without first sinking. Furthermore, rough, porous, in particular textile surfaces, which are not accessible to conventional disinfection processes, can be sterilized particularly effectively by means of such an aerosol. This is due in particular to the advantageous droplet size, advantageous material handling of the aerosol droplets.

The aerosol generating unit 7 is conductively connected to a ventilation unit 8. The ventilation unit 8 draws in a room air surrounding the device for the purpose of aerosol generation. The room air is moved past the sputtering membrane, and thus serves as a carrier medium for the disinfectant. The microdroplets produced on the sputtering membrane are introduced into the airflow for this purpose. Then the generated aerosol is discharged from the device. The discharge can according to the invention either directly in the sterilizing space. For this purpose, the device 1 can be placed in the space to be sterilized or the area to be sterilized. In this case, the device 1 is made mobile to sterilize various rooms or areas of space as desired or necessary. For this purpose, the device comprises 1 rollers.

Alternatively, the aerosol can be indirectly introduced into the space to be sterilized. For this purpose, the device 1 is arranged in an existing ventilation system of a building, which connects a plurality of rooms with each other in order to sterilize as many rooms as possible. The present in such a ventilation system air flow flows around the device. It serves advantageously as a carrier medium for the disinfectant in the aerosol.

In the present case, the device has an error output unit, not shown. The error output unit is presently designed as an LED field. Faults of the disinfectant tank are indicated by a green LED. Errors of the aerosol generating unit are indicated by a red LED. Faults of the ventilation unit are indicated by a yellow LED. Vorteifhafterweise this leads to an overall simplification of maintenance and, where appropriate, the repair of the device 1, since sources of error can be detected and displayed directly.

FIG. 2 shows a device 1 according to the invention with a storage container 2. The storage container 2 is connected in line with the disinfectant tank 3. The connection of the disinfectant tank 3 and the reservoir 2 is realized in the present example with the interposition of a peristaltic pump 5. In the present case, the disinfectant tank 3 has a level sensor 4. The level sensor 4 is connected to the peristaltic pump 5 in terms of control technology. In this way, when falling below a predetermined level in the disinfectant tank 3 automatically disinfectant from the reservoir 2 spent in the disinfectant tank 3. As a result, a continuous operation is advantageously made possible.

The disinfection center! is formed in this embodiment as an aqueous solution. Accordingly, it consists of 97% by weight of deionized water, 2.7% by weight of hydrogen peroxide and 0.3% by weight of coconut oil-based surfactants. Such Active ingredient combination has proven to be particularly effective in terms of effectiveness against common germs, so that comparatively low concentrations lead to a substantially complete sterilization. In addition, the aforementioned disinfecting solution has a comparatively broad anti-microbial spectrum. It has been found that it is equally effective against bacteria, viruses, spores and fungi and in the concentration of the invention for the disinfection of medical tools, preferably surgical instruments, dental tools and / or covered and uncovered body parts, especially hands and feet suitable is.

In the present case, the disinfectant tank 3 is conductively connected to an ozone generating unit 6. The ozone generating unit 6 is presently designed in the form of an ozone candle. The ozone produced in the ozone candle is introduced into the disinfectant solution. As a result, the ozone formed dissolves at least partially in the disinfectant. The thus modified disinfectant is supplied to the aerosol generating unit 7. In the present case, the aerosol generating unit 7 has a sputtering membrane (not shown). The atomizing membrane oscillates with a frequency in the ultrasonic range. As a result, disinfectant droplets can be produced with a diameter of 3 μηη. It has been found that such a droplet size is particularly advantageous in terms of the aerosol's ability to float and its ability to disinfect hard to reach areas. In fact, such an aerosol also reaches areas of the object to be disinfected, which because of their geometric configuration are comparatively difficult to disinfect. In particular, rough, porous, in particular textile surfaces and the human skin, in particular those of the hand and foot inner surfaces, which are not accessible to conventional disinfection methods, can be disinfected particularly effectively by means of such an aerosol. This is due in particular to the advantageous droplet size, advantageous aterialgängigkeit the aerosol droplets.

The aerosol generating unit 7 is conductively connected to a ventilation unit 8. The ventilation unit 8 draws in a room air surrounding the device for the purpose of aerosol generation. The room air is moved past the sputtering membrane, and thus serves as a carrier medium for the disinfectant. The microdroplets produced on the sputtering membrane are inserted into the Introduced air flow. The aerosol is produced here with a concentration of 0.6 ml / m ³ . Then the generated aerosol is fed to an application unit 9. For this purpose, the aerosol generating unit 7 and the application unit 9 are interconnected in terms of line technology. The application unit 9 provides a disinfection area in the form of a volume space. The disinfection area has a multiplicity of first openings for introducing the aerosol into the disinfection area, which are arranged uniformly over its inside. Furthermore, the disinfection area has a second opening for introducing the objects to be disinfected into the disinfection area.

In this embodiment, the application unit 9 is designed as a hand disinfection unit. For this purpose, the device 1 has a control device, not shown, which is mechanically connected to a control unit for activating the disinfection process. In the present case, the operating unit is equipped with a pressure sensor and a light sensor. The pressure sensor is arranged at the user's external wall of the device when the device is used as intended, at the knee height of an average user. Upon actuation of the pressure sensor, the disinfection, preferably the introduction of the aerosol into the disinfectant area is started, provided that the light sensor detects the proper positioning of the hands within the disinfection area. The controller now detects the start time. In the present case, a disinfection period of 20 seconds is stored in the control device. On the basis of the stored disinfection duration, the control device calculates an end time for the disinfection. If this is achieved, the disinfection, preferably the introduction of the aerosol is stopped in the disinfection area. Furthermore, the user is informed about the completion of the disinfection by means of a suitable signal, in the present case an acoustic signal.

In the present case, the device has an error output unit, not shown. The error output unit is presently designed as an LED field. Faults of the disinfectant tank are indicated by a green LED. Errors of the aerosol generating unit are indicated by a red LED. Faults of the ventilation unit are indicated by a yellow LED. Advantageously, this leads overall to a simplification of the maintenance and possibly the repair of the device 1, since sources of error can be detected and displayed directly. Bezugszelchenliste

1 device

2 storage tanks

3 disinfectant tank

4 liquid meters

5 peristaltic pump

6 ozone candle

7 Aerosol generating unit

8 ventilation unit

9 application unit

Claims

claims

1. disinfectant consisting of an aqueous disinfectant solution, comprising an oxidizing agent in the form of H ₂ 0 ₂ and a vegetable surfactant.

2nd disinfection center! according to claim 1, characterized in that the disinfectant solution 95 to 98 wt .-% voilentsalztes water, 1, 5 to 4 wt -% H ₂ 0 ₂ and 0, 1 to 0.5 wt .-% of at least one vegetable surfactant ,

3. Disinfectant according to one of claims 1 or 2, characterized in that the aqueous disinfectant solution comprises further vegetable surfactants, wherein all surfactants contained in the disinfectant solution can be obtained from coconut oil.

4. Disinfectant according to one of claims 1 to 3, characterized in that the aqueous disinfectant solution has a further oxidizing agent.

5. A process for the sterilization of rooms or areas thereof, wherein from a disinfectant according to any one of claims 1 to 4 generates a suspended aerosol and is introduced continuously into the space to be sterilized, wherein the total concentration of the disinfectant is set in the aerosol, wherein in each case a maximum limit for the individual concentration of the oxidizing agent and the surfactant in the aerosol is specified.

6. The method according to claim 5, characterized in that between 0.01 and 0.05 ml of disinfectant per m ³ Raumiuft be atomized.

7. The method according to any one of claims 5 or 6, characterized in that the disinfectant to droplets with a diameter below 10 μηα, preferably 5 μιη is atomized.

8. A method for disinfecting medical tools, preferably surgical instruments, dental tools and / or body parts, in particular hands, arms and feet, wherein from a disinfectant according to any one of claims 1 to 4, a suspended aerosol generated and continuously with the object to be disinfected and / or the

Body part is brought into contact, wherein in each case a maximum limit value for the individual concentration of the oxidizing agent and the surfactant in the aerosol is specified.

9. The method according to claim 8, characterized in that between 0.1 and 1, 0 ml, preferably between 0.5 and 0.7 ml, disinfectant per m ^{3 of} air is atomized.

10. The method according to claim 8 or 9, characterized in that the aerosol is produced in an amount of 10 to 500 ml / h.

11. A device for applying a disinfectant according to one of claims 1 to 4, comprising a disinfectant tank for providing the disinfectant, a line connected to the Desinfektmitteltmitteltank aerosol generating unit for generating an aerosol from the disinfectant and a line connected to the aerosol generating unit ventilation unit for the intake of ambient air and for discharging the aerosol.

12. The device according to claim 11, characterized by a line technology associated with the aerosol generating unit application unit, which provides a disinfection area in the form of a volume space, wherein the volume space a first opening for introducing the aerosol on the one hand and a second opening for introducing and removing an object to be disinfected and or body part on the other hand. 3. A device according to any one of claims 11 or 12, characterized in that the aerosol generating unit has an atomizing with an ultrasonic frequency formed Zerstäubungsmembran.

14. The apparatus according to claim 12, characterized in that the volume space has a plurality of first openings.

15. The apparatus of claim 1 1, characterized by a Ozone generating unit, which is connected to the disinfectant tank to initiate the ozone generated in the disinfectant line technology.