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WO2018133896A1 - Procédé et dispositif de désinfection pour la désinfection de circuits de circulation de liquide dans un appareil, en particulier pour des circuits de circulation d'eau dans un appareil d'hypothermie - Google Patents

Procédé et dispositif de désinfection pour la désinfection de circuits de circulation de liquide dans un appareil, en particulier pour des circuits de circulation d'eau dans un appareil d'hypothermie Download PDF

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Publication number
WO2018133896A1
WO2018133896A1 PCT/DE2018/000011 DE2018000011W WO2018133896A1 WO 2018133896 A1 WO2018133896 A1 WO 2018133896A1 DE 2018000011 W DE2018000011 W DE 2018000011W WO 2018133896 A1 WO2018133896 A1 WO 2018133896A1
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WO
WIPO (PCT)
Prior art keywords
liquid
disinfection
disinfecting
fluid
disinfected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2018/000011
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German (de)
English (en)
Inventor
Markus Bongert
Dirk Buchwald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fachhochschule Dortmund
Original Assignee
Fachhochschule Dortmund
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Filing date
Publication date
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Publication of WO2018133896A1 publication Critical patent/WO2018133896A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • A61L2/183—Ozone dissolved in a liquid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/70—Cleaning devices specially adapted for surgical instruments
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/13—Biocide decomposition means, e.g. catalysts, sorbents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/026—Treating water for medical or cosmetic purposes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/18—Removal of treatment agents after treatment

Definitions

  • the invention relates to a method for disinfecting fluid circuits in a device, in particular water circuits in a hypothermia device according to the preamble of claim 1 and a disinfecting device for disinfecting fluid circuits, in particular water circuits in a hypothermia device according to the preamble of claim 16.
  • hypothermia device which may be considered as a separate hardware in addition to the heart-lung machine, in the range of about 2 ° C to 40 ° C.
  • This combination of devices creates a water cycle in the cardiac surgical operating room, in which water circulates pump-driven during the operation or is in tanks inside the hypothermia device.
  • Hypothermia devices are mobile and, with regard to the water supply, autonomous multi-circuit heating or cooling devices. They are used as intended during one Extracorporeal perfusion for controlled temperature control of the patient and cardioplegic circulation using heat exchangers, usually integrated in oxy- genators. Without the ability to temper the patient's blood in a controlled manner, performing cardiac surgery is impractical. The devices are therefore obligatory and indispensable.
  • the oxygenators are connected to the hypothermia device using DVGW-approved hoses. Commercially available Hansen couplings (plastic or metal) including hose clamps are used for the connection.
  • Chemical additives or filters could be used to avoid these unwanted impurities in the heat transfer circuit.
  • Filters in turn prevent the growth of germs and algae. Since the filter life depends on the degree of contamination of the water-bearing system, a regular, costly replacement is required. In addition, a loaded filter significantly increases the flow resistance of the overall system, which can result in an unacceptable reduction in heat exchanger efficiency.
  • the object of the present invention is therefore to provide an if possible manufacturer-neutral disinfection device for devices through which water flows, in particular for hypothermic devices, which permanently makes it possible to reduce the microbiological load in the water cycle.
  • the solution of the object of the invention results in terms of the method of the characterizing features of claim 1 and in terms of the disinfecting device from the characterizing features of claim 16 in cooperation with the features of the associated preamble. Further advantageous embodiments of the invention will become apparent from the dependent claims.
  • the invention in terms of the method is based on a method for disinfecting liquid circuits in a device, in particular water circuits in a hypothermia device.
  • a method for disinfecting liquid circuits in a device is at least temporarily passed through a disinfection device having a means for providing a disinfecting fluid, the disinfection fluid added to the liquid passed through and the liquid in a deactivation unit by the disinfecting fluid
  • the disinfected liquid is then passed into an elimination unit for eliminating the disinfecting fluid in which the disinfected liquid remains or the disinfected liquid passes through until the disinfecting fluid is completely eliminated from the disinfected liquid by the elimination unit at least one detection device continuously checks the degree of elimination of the disinfecting fluid from the disinfected fluid, and only after festivals If the disinfecting fluid is completely eliminated, the disinfected fluid is returned to the fluid circuit of the unit.
  • an essential feature of the invention is that the sterilized liquid after leaving the disinfecting device according to the invention contains no residues of the disinfecting fluid used for disinfection and therefore can not cause any impairment of the function of the device within the device or the liquid has no components derived from the disinfection, which can cause problems in connection with the use of the device. For example, in Hypothermieowskin this can be reliably prevented that disinfection residues pass through leaks in the heat exchanger of the oxygenator in the blood of a patient and can cause harmful reactions there.
  • This disinfection concept with its constructive implementation can be used in principle for all devices with liquid circuits, in which a microbial contamination hinders or has to be reduced.
  • the process can be carried out particularly advantageously if the disinfectant fluid used is a readily degradable fluid, in particular ozone, which permanently inhibits the microbiological load, in particular the multiplication of bacteria, fungi and algae, in the liquid to be disinfected.
  • Ozone efficiently reduces the bacterial count in liquid circuits of a general nature and in particular in the water cycle of hypothermic devices to such an extent that the requirements of the German Drinking Water Ordinance are complied with.
  • the process ensures complete elimination of the ozone in the water by means of technical measures, before it is returned to the device, in particular the hypothermia device.
  • the disinfection process effectively works on bacteria, fungi and algae, which account for most of the microbiological burden in the water cycle.
  • the procedure is compatible with all hypothermic devices used in cardiac surgery worldwide.
  • disinfecting fluids such as disinfectant liquids or disinfectant gases in a further embodiment, a log3 disinfection of the liquid is possible, i. that 99.99% of all microbiological contamination from the fluid circuit of the device can be killed or rendered harmless.
  • the device for providing a disinfecting fluid itself generates the disinfection fluid, preferably ionizing air from the environment to ozone. This avoids the disinfection device being In addition, the operation of the disinfection device is simplified on a regular basis with potentially harmful substances for the user.
  • the disinfecting fluid preferably by means of an injector, at least a partial volume flow of the liquid of the fluid circuit can be added.
  • an injector distributes the disinfecting fluid relatively evenly within the liquid to be disinfected, so that the disinfecting fluid can be safely brought into contact with any part of the liquid to be disinfected.
  • the added disinfectant fluid is mixed with the fluid of the fluid circuit, e.g. via corresponding additional mixing devices or a suitable liquid guide.
  • the deactivation unit for the disinfection of the liquid is dimensioned and the liquid flows through it in such a way that the liquid is safely disinfected during the flow through the deactivation unit.
  • Each disinfecting fluid needs for a reliable disinfection and depending on the desired degree of disinfection a certain exposure to the liquid to be disinfected, which is why the leadership of the liquid to be disinfected must remain correspondingly long in the deactivation unit or must go through several times a shorter designed deactivation unit.
  • UV radiation is used to decompose and degrade the ozone after disinfecting the liquid.
  • Ozone as a preferred disinfecting fluid, is decomposed by the action of UV light into innocuous components which can remain in the liquid circuit and no longer have harmful effects on the fluid circuit of the device. This avoids complex devices for extracting residues of a non-residue disintegrating disinfection fluid and thereby ensures cost-effective operation of the disinfection device.
  • At least one detection device continuously determines the degree of elimination of the disinfecting fluid after flowing through the elimination unit. This ensures that non-eliminated disinfecting fluid leaves the disinfection device and is transported into the fluid circuits of the device, where the disinfecting fluid can have adverse effects, including destruction of the device. For this purpose, it is necessary that the return of the liquid is released into the liquid circuit of the device only if the at least one detection device determines that the disinfecting fluid has been completely removed from the disinfected liquid.
  • this safe mode of operation can be realized in that the at least one detection device influences the flow of the disinfected liquid in such a way that upon detection of an incomplete elimination of the disinfecting fluid, the disinfected liquid is passed through the elimination unit again. Instead of returning to the liquid circuit of the apparatus, the liquid, which has not yet been sufficiently eliminated, is again supplied to the elimination unit one or more times, such that the elimination unit is e.g. UV light also causes the last remaining residues of the disinfecting fluid, e.g. eliminated by decomposition.
  • the elimination unit is e.g. UV light also causes the last remaining residues of the disinfecting fluid, e.g. eliminated by decomposition.
  • the disinfection device continuously disinfects the fluid circuit of the hypothermia device during periods of non-use of the hypothermia device.
  • disinfection is particularly important to keep the hypothermia device germ-free for long periods of time.
  • the disinfection device itself must also be used within the surgical area, as this would require far more extensive and complex approval procedures for the disinfection device.
  • the disinfection device can for example be operated adjacent to the surgical area, for example in an adjoining room of the OP in which the hypothermia device is stored during periods of non-use.
  • the disinfection device is placed in an operating state in which the fluid circuit of the device flows past the disinfection device.
  • This reliably prevents the disinfecting device from passing over the disinfecting fluid, e.g. into the hypothermia device and impaired its function or life endangered.
  • Valves at the inlet of the disinfection device designed so that they close when de-energized and shut off the passage of liquid from the liquid circuit of the hypothermia device in the disinfection device.
  • a redundantly designed measuring and control technology as well as the double bypass circuit can continue to protect the operation of the disinfection device when the limit value for the disinfection fluid is exceeded, for example by carrying out a self-test of the elementary functional units of the disinfection device at each startup and that in the time to next use, the complete device and all lines are permanently flushed with a low flow rate of up to 1 l / min (standby mode with circulating water).
  • the invention with regard to the device further relates to a disinfection device for fluid circuits in a device, in particular for water circuits in a hypothermia, in which the liquid circuit of the device flows through the disinfection device at least temporarily, the disinfection device has a device for providing a disinfecting fluid, which provides the provided disinfecting fluid of the liquid in a deactivating unit, whereby the disinfecting fluid disinfects the liquid, followed by the deactivation unit is an elimination unit is arranged, in which the disinfected liquid enters and in which the disinfecting fluid is eliminated, wherein at least one detection means continuously checks the degree of elimination of the disinfecting fluid in the liquid and is associated with valve means such that the disinfected liquid only after complete he elimination is returned to the fluid circuit of the device back.
  • a disinfection device for fluid circuits in a device, in particular for water circuits in a hypothermia, in which the liquid circuit of the device flows through the disinfection device at least temporarily, the disinfection device has a device for providing a disinfect
  • Such a disinfection device according to the invention can advantageously only in times of non-use of the device, preferably the Hypothermieijns, with the liquid to be disinfected liquid circuit in liquid-conducting connection and be arranged for example outside of an operating room.
  • the disinfecting device is connected as an additional unit to a hypothermia device, preferably looped between the flow and return of the hypothermia device.
  • a hypothermia device preferably looped between the flow and return of the hypothermia device.
  • any intervention in the operation of the hypothermia device is unnecessary, which could possibly cause regulatory problems and liability problems in addition to technical problems.
  • a disinfection device according to the invention immediately as part of the hypothermia device and to provide a corresponding device integration.
  • the volume of the liquid to be disinfected in the disinfecting device for the disinfection of a hypothermia device is no longer 1 I. This relatively small removal quantity of the liquid to be disinfected avoids the presence of fuses within the hypothermia device against excessively small quantities of liquid and interrupting the operation of the hypothermia device.
  • the disinfecting fluid is arranged in the flow direction of the liquid in front of the deactivation unit and, preferably by means of an injector such as a Venturi injector, at least a partial volume flow of the liquid adds the disinfecting fluid.
  • an injector such as a Venturi injector
  • the device for providing a disinfectant fluid has an ionizer for generating the disinfecting fluid, in particular ozone from ambient air.
  • an otherwise necessary filling of the disinfection device with, for example, ozone is superfluous, since the ozone can be generated by the ionizer in the disinfection device itself.
  • a radiation source for ultraviolet radiation is arranged in the elimination unit, which acts on the fluid mixed with disinfectant fluid and decomposes and degrades the ozone after disinfecting the fluid.
  • the UV lamp also causes itself a disinfection.
  • the flow rate in the circuits is eg between 5 and 25 l / min.
  • the liquid to be disinfected before and after the elimination unit by controllable valves so that the disinfected liquid circulates through the elimination unit until the disinfecting fluid is completely degraded in the disinfected liquid.
  • the already disinfected liquid but possibly still has residues of the disinfecting fluid, several times the effect of the e.g. UV light that decomposes the ozone as a disinfecting fluid.
  • the at least one detection device is arranged so that the detection device determines the degree of elimination of the disinfecting fluid after flowing through the elimination unit.
  • the disinfecting fluid should normally be completely decomposed, so that the detection means no longer detects any disinfecting fluid in the disinfected liquid.
  • the flow of disinfected liquid can be directed by valves so that the disinfected liquid passes through the elimination unit once or several times again, based on the signal from the detection means, until the signal from the detection means completely eliminates the Disinfection fluid notes.
  • At least one further detection device can be arranged such that the degree of elimination of the disinfecting fluid is determined before the liquid is returned to the liquid circuit of the device. Only when both or all of the detection devices determine that there is no disinfecting fluid behind the elimination unit is the liquid returned to the fluid circuit of the device.
  • valves of the disinfection device can be adjusted by motor operation and are automatically influenced by a control device, preferably a programmable logic controller. This increases the reliability and simplifies operation.
  • the control device can be connected to the device for providing a disinfecting fluid, the deactivation unit, the elimination unit, the at least one detection device, pumps and motor-operated valves and control the operation of the disinfection device.
  • the lines and other facilities of the disinfection device which come into contact with the liquid to be disinfected, are resistant to the disinfecting fluid. All surfaces that may be in contact with the ozone-water mixture when using ozone as a disinfecting fluid should be ozone-resistant.
  • glass, plastic and / or stainless steel is used for the approximately spirally shaped containers and / or pipelines. A particularly preferred embodiment of the device according to the invention is shown in the drawing.
  • Figure 1 - a schematic structure of the individual modules of the disinfection device according to the invention and the interconnection of the controller with the individual functional modules for the disinfection of a hypothermia device outside an operating room.
  • FIG. 1 shows the schematic structure of the disinfection device 5 according to the invention as an external auxiliary unit for a hypothermia device 1.
  • disinfection device 5 and hypothermia device 1 are arranged outside an operating range 13, so that the disinfection device 5 does not have to meet the high hygienic requirements of the normal operating environment.
  • This combination of disinfection device 5 and hypothermia device 1 takes place advantageously in times when the hypothermia device 1 is not needed.
  • the disinfecting device 5 according to the invention can also be located inside a hypothermia device 1, if any emission of the disinfecting fluid 18 into the hypothermia device 1 or the surgical area 13 can be excluded.
  • the disinfection device 5 is fed with contaminated, coming in this example of a hypothermia device 1 water as a liquid 19 from the inlet 15.
  • the water circuits 14, 15 of the hypothermia device 1 for example, with conventional fluidic connectors 12 are connected to the disinfection device 5.
  • Ström ungs nurse before these fluidic connectors 12 are on the side of the hypothermia device 1 in each of the water circuits 14, 15 electromotive controllable valves 24, 25, which can be opened and closed individually.
  • each of the water circuits 14, 15 is in each case a connecting line 26 between the water circuits 14 and 15 arranged such that when closing the valves 24, 25, a fluidic short circuit between the water circuits 14 and 15 is formed and the fluid volume does not enter the disinfection device 5, but circulated within the hypothermia device 1.
  • This allows each individual water cycle to be treated separately with the disinfectant ons dressed 5 are connected or disconnected from the disinfection device 5, so that only individual water circuits of the hypothermia device 1 can be disinfected as described below, while the other water circuits of the hypothermia device 1 are normally in operation.
  • the volume flows of the liquid 19 from the inlet 15 are supplied by means of a manifold 16 by a controllable by a control device 6 valve 7 with a motor drive M to the addition of the disinfecting fluid 18.
  • a divided by a valve 8 volume flow of the contaminated water 19 from the hypothermia 1 by means of an injector 16 the disinfecting fluid 18 is added from the controllable device 2 for providing the disinfecting fluid 18, which mixes with the remaining part volume flow of the contaminated water 19 in the course.
  • the deactivation unit 3 which is then flowed through by the liquid 19, the disinfection process continues.
  • the reaction of the disinfecting fluid 18 with the bacteria, viruses, etc. in the liquid 19 the disinfection of the liquid 19, here the water.
  • the contaminated water 19 from the hypothermia device 1 must pass through the disinfection device 5 or else only the deactivation unit 3 several times, so that a log3 disinfection with a disinfection degree of 99.9% is achieved.
  • a bypass line not shown in FIG. 1, can be provided, which returns the water 19 flowing out of the outlet of the deactivation unit 3 back to the inlet of the deactivation unit 3.
  • the disinfectant fluid 18 still present in the liquid 19 is degraded in the elimination unit 4, for example by the action of a strong UV light source 21, thereby even further disinfecting liquid 19.
  • the detection device 11 for example a suitable 0 3 sensor
  • the liquid 19 exiting the elimination unit 4 is checked for complete removal of the disinfecting fluid 18. If this is the case, then the liquid 19, which has now been disinfected and purified by the disinfecting fluid 18, flows through the valve 10 back into the hypothermia device 1. Thereafter, this process begins again. If, after passage of the elimination unit 4, residues of the disinfectant 18 in the liquid 19 are still detected by the detection device 11, the control device 6 receives a corresponding signal.
  • the bypass pump 17 is turned on so as to circulate the liquid 19 to the elimination unit 4 again.
  • the production or addition of the disinfection fluid 18 in the device 2 is stopped immediately. This state remains in effect until the detection device 11 no longer measures any remaining disinfecting fluid 18. Only then does the control device 6 release the valves 7, 9, 10 and thus the main circuit of the liquid 19 again.
  • the bypass pump 17 is turned off again and the device 2 continues the production of the disinfecting fluid 18 again.
  • disinfection device 5 and hypothermia device 1 are not connected to one another in terms of flow, it may be useful to continue to disinfect the liquid volume contained within disinfecting device 5 continuously or temporarily, so that no increase in germs can occur here as well.
  • the disinfection device 5 When used in the medical field, the disinfection device 5 should not necessarily be used in clinical operation, ie in direct connection with the patient during an operation. Rather, an essential aspect is the Disinfection device 5, in the stand-by times, in which the working example as a hypothermia device 1 is not used intraoperatively, to enable water disinfection and water conservation of the water circuits 14, 15 of the hypothermia device 1.
  • the preferred disinfection process should therefore be described as intermittent, water-disinfecting and water-conserving.
  • the disinfection device 5 is fed as described with the contaminated water 19 coming from the hypothermia device 1.
  • Up to three water circuits 14, 15 of a hypothermia device 1 can be connected to the disinfection device 5, which coordinates the volume flows via the control of the valves 7, 8, 9, 10 by means of a control device 6 such as a PLC.
  • the water 19 flows without disinfection mainly via a bypass circuit, not shown, because then the valves 7 and 10 are closed. This ensures undisturbed operation of the hypothermia device 1.
  • valve 8 is at least partially closed and the flow through the valve 8 throttled so that the water to be disinfected 19 at least partially flows through the injector 20 and thus is mixed with, for example, ozone as a disinfecting fluid 18.
  • This resulting water-ozone mixture 19 flows through the deactivation unit 3, which is sized so that the time required for disinfection reaction time is guaranteed.
  • the now disinfected water-ozone mixture 19 of the elimination unit 4 is supplied, in which by means of a UV lamp 21, the de-ozonation takes place by the decomposition of the ozone. For a better mixing can serve a not shown agitator.
  • ozone-free water 19 After leaving the elimination unit 4, compliance with the limit value (0%) of residual ozone is checked with a detection device 11, for example with an O 3 sensor. Before the purified, ozone-free water 19 returns to the hypo Thermal device 1 flows, it can be controlled again with a second downstream arranged detection device 11 in the form of another 0 3 - sensor for ozone freedom. After passing through these possibly multi-stage controls within the disinfection device 5 according to the invention, the water 19 then flows back to the hypothermia device.
  • a detection device for the pH of the water to be disinfected or disinfected 19 are provided so that other properties of the water 19 can be controlled continuously or temporarily.
  • Performance data of the disinfection device 5 according to the invention are as follows.
  • an agitator can additionally be used
  • Ozone is added by means of a venturi injector 20, preferably of 280 mg / m 3
  • the disinfection device 5 can advantageously be used for sterilizing a variety of devices in the hospital or general health, such as in online operation on the patient, ie during surgery even in the operating room. It is also conceivable to use the disinfection device 5 in the field of dialysis machines. In general, the disinfection device 5 can also be used within a hospital for the substitution of regularly exchanged filters of all kinds, thereby saving high costs, such as to prevent or stem the constant contamination of drinking water circuits with eg Legionella.
  • the disinfection device 5 also in the field of general drinking water supply, e.g. at predestined exit points to prevent the formation of e.g. Prevent or stem legionella ..
  • the disinfection device 5 is also suitable for permanent disinfection of cooling systems in the pharmaceutical industry or in the food industry and for the disinfection of air conditioning systems (especially in the hospital sector).

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  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un procédé pour la désinfection de circuits de circulation (14, 15) de liquide dans un appareil (1), en particulier de circuits de circulation (14, 15) d'eau dans un appareil d'hypothermie (1), dans lequel le liquide (19) du circuit de circulation (14, 15) de liquide est guidé, en vue de la désinfection, au moins temporairement à travers un dispositif de désinfection (5), qui présente un dispositif (2) pour la mise à disposition d'un fluide de désinfection (18), le fluide de désinfection (18) est ajouté au liquide (19) qui passe à travers le dispositif et le liquide (19) est désinfecté dans une unité de désactivation (3) par le fluide de désinfection (18), le liquide désinfecté (19) est ensuite guidé dans une unité d'élimination (4) pour l'élimination du fluide de désinfection (18), dans laquelle le liquide désinfecté (19) reste pendant une période telle ou qui est traversée par le liquide désinfecté (19) un nombre de fois tel que le fluide de désinfection (18) est complètement éliminé du liquide désinfecté (19) par l'unité d'élimination (4), au moins un dispositif de détection (11) testant en continu le degré d'élimination du fluide de désinfection (18) à partir du liquide désinfecté (19) et ce n'est que lorsque l'élimination complète du fluide de désinfection (18) est constatée que le liquide désinfecté (19) est de nouveaux guidé dans le circuit de circulation (14, 15) de liquide de l'appareil (1). L'invention concerne également un dispositif de désinfection (5) correspondant.
PCT/DE2018/000011 2017-01-17 2018-01-14 Procédé et dispositif de désinfection pour la désinfection de circuits de circulation de liquide dans un appareil, en particulier pour des circuits de circulation d'eau dans un appareil d'hypothermie Ceased WO2018133896A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017000426.9A DE102017000426A1 (de) 2017-01-17 2017-01-17 Verfahren und Desinfektionseinrichtung zur Desinfektion von Flüssigkeitskreisläufen in einem Gerät, insbesondere für Wasserkreisläufe in einem Hypothermiegerät
DE102017000426.9 2017-01-17

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WO2018133896A1 true WO2018133896A1 (fr) 2018-07-26

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WO (1) WO2018133896A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE202019106421U1 (de) 2019-11-18 2019-11-22 Pro Aqua Diamantelektroden Produktion Gmbh & Co Kg Desinfektionsgerät
US11981587B2 (en) * 2020-01-30 2024-05-14 Michael Schelch Disinfection device and method for performing disinfection cycles

Citations (8)

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EP0567775A2 (fr) * 1992-04-28 1993-11-03 HumanAir Patentverwertungsgesellschaft mbH Procédé de traitement de l'air de locaux pour le domaine humain
EP0707178A2 (fr) * 1994-10-13 1996-04-17 Alexander Dr. Med. Balkanyi Méthode et dispositif pour le traitement d'air
JPH09253181A (ja) * 1996-03-19 1997-09-30 Zexel Corp オゾン殺菌装置
WO2000035813A1 (fr) * 1998-12-16 2000-06-22 Lynntech, Inc. Elimination des micro-organismes a un point d'utilisation de sources d'eau potable
DE202004001194U1 (de) 2004-01-28 2004-04-01 Rehau Ag + Co Zusatzaggregat für Hypothermiegeräte
US20080302737A1 (en) * 2006-06-30 2008-12-11 Vortex Corporation Apparatus and method for purifying water in a storage tank
DE102010031865A1 (de) * 2010-07-21 2012-01-26 Bis Prozesstechnik Gmbh Verfahren zur Kalibrierung von Ozonsensoren und Vorrichtung zu deren Durchführung
US20170348449A1 (en) * 2016-06-02 2017-12-07 Stryker Corporation Method of disinfecting a thermal control unit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009026377A1 (de) 2009-08-14 2011-02-24 Brensing, Karl August, Dr. Anlage zur Desinfektion und Sanitisierung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0567775A2 (fr) * 1992-04-28 1993-11-03 HumanAir Patentverwertungsgesellschaft mbH Procédé de traitement de l'air de locaux pour le domaine humain
EP0707178A2 (fr) * 1994-10-13 1996-04-17 Alexander Dr. Med. Balkanyi Méthode et dispositif pour le traitement d'air
JPH09253181A (ja) * 1996-03-19 1997-09-30 Zexel Corp オゾン殺菌装置
WO2000035813A1 (fr) * 1998-12-16 2000-06-22 Lynntech, Inc. Elimination des micro-organismes a un point d'utilisation de sources d'eau potable
DE202004001194U1 (de) 2004-01-28 2004-04-01 Rehau Ag + Co Zusatzaggregat für Hypothermiegeräte
US20080302737A1 (en) * 2006-06-30 2008-12-11 Vortex Corporation Apparatus and method for purifying water in a storage tank
DE102010031865A1 (de) * 2010-07-21 2012-01-26 Bis Prozesstechnik Gmbh Verfahren zur Kalibrierung von Ozonsensoren und Vorrichtung zu deren Durchführung
US20170348449A1 (en) * 2016-06-02 2017-12-07 Stryker Corporation Method of disinfecting a thermal control unit

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