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WO1997018902A1 - Fluids dispenser designed to protect the contents from contamination - Google Patents

Fluids dispenser designed to protect the contents from contamination Download PDF

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Publication number
WO1997018902A1
WO1997018902A1 PCT/EP1996/004356 EP9604356W WO9718902A1 WO 1997018902 A1 WO1997018902 A1 WO 1997018902A1 EP 9604356 W EP9604356 W EP 9604356W WO 9718902 A1 WO9718902 A1 WO 9718902A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
air
sterilizing
dispensing device
germ
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/EP1996/004356
Other languages
German (de)
French (fr)
Inventor
Günter Geimer
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.)
URSATEC VERPACKUNG-GMBH
Ursatec Verpackung GmbH
Original Assignee
URSATEC VERPACKUNG-GMBH
Ursatec Verpackung GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE29518284U external-priority patent/DE29518284U1/en
Application filed by URSATEC VERPACKUNG-GMBH, Ursatec Verpackung GmbH filed Critical URSATEC VERPACKUNG-GMBH
Priority to DE59610157T priority Critical patent/DE59610157D1/en
Priority to EP96934570A priority patent/EP0861128B1/en
Priority to US09/068,801 priority patent/US6053368A/en
Publication of WO1997018902A1 publication Critical patent/WO1997018902A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/047—Deformable containers producing the flow, e.g. squeeze bottles characterised by the outlet or venting means
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072—A valve member forming part of an outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps

Definitions

  • the invention relates to dispensing devices for fluids in which air flows back to equalize pressure, according to the preamble of claim 1.
  • Dispensing devices of this type are fastened on a storage container for the fluid to be dispensed.
  • ambient air flows into the storage container.
  • the disadvantage of such dispensing devices is that the inflowing air is contaminated and thus contaminates the fluid in the storage container.
  • the fluid germs at the outlet opening through contact with the environment. This contamination can grow through the outlet path of the fluid into the reservoir to the reservoir fluid and contaminate it. Such contamination leads to spoilage and danger to the user in pharmaceuticals and cosmetics.
  • Preservatives have harmful effects for consumers regardless of the price level of the products. They are questionable substances and lead to undesirable side effects.
  • the invention has for its object to provide a device of the type mentioned above for multiple dispensing of fluids from a supply with a pressure equalization by air, which protects the supply fluid from contamination with nobody and thus can be dispensed with the use of preservatives.
  • Another object of the present invention is to provide a dispensing device for fluids which can be adapted to conventional storage containers and which can be produced inexpensively.
  • the present invention uses a fluid dispenser in which the fluid exit path is at least in part separate from the air entry path for the
  • Air that is to enter the storage vessel for pressure equalization is guided.
  • the air germs and fluid germs can be rendered ineffective separately from one another.
  • This has the advantage that different methods can be used for the disinfection of the fluid or the air, each of which can be adapted to the different needs.
  • the disinfection or germ reduction of the fluid takes place in the area of the outlet path of the fluid by oligodynamically active substances. Heavy metal and / or heavy metal alloys in metallic and / or ionic form can be used. The use of silver has proven to be particularly advantageous.
  • the disinfection or germ reduction of the fluid in the region of the exit path of the fluid has the effect that no germs from the one with the
  • Outlet opening coming into contact with the environment in the opposite direction of the flow of the fluid past the valve (for example through growth) into the storage container and that the aseptic fluid from the storage container is not contaminated with contaminated residual quantities (for example at the outlet opening) when it is being dispensed, and the microbiological quality thereby becomes unsafe for the consumer. Furthermore, growth of the germs at the outlet opening and in all areas of the dispensing device is prevented, in particular in the case of a pump or a valve.
  • the disinfection of the air flowing into the storage container for pressure equalization can furthermore be achieved by other methods which are matched to the airborne germs.
  • the air can be passed through a sterile filter on its entry path or can reach the storage container through permeation through a membrane located in the airway. In this way, the airborne germs can be effectively retained.
  • the air can be guided past absorbent or adsorbing materials on their entry path, which hold the airborne germs.
  • electrostatic forces can be used here.
  • air disinfection can also be achieved by means of oiigodynamically active substances which are arranged in the air inlet path. It is also important that these agents can be combined, e.g. germs are absorbed by agents that also have microbicidal properties.
  • Another advantage that results from the separate disinfection of the fluid and the air is that substances that are used for air disinfection do not come into contact with the fluid. This prevents any foreign substances from getting into the fluid and thus being supplied to the consumer.
  • the dispensing device can be a pump which is placed on a conventional storage container.
  • the fluid outlet and air inlet paths which are routed separately in at least one part, can be integrated in the pump.
  • the reservoir can be designed as a squeeze bottle for dispensing the fluid, in which case a valve is advantageously provided at the fluid outlet.
  • FIG. 1 shows an example of a dispensing device in which means for disinfecting the fluid and, separately therefrom, means for disinfecting the inflowing air are used.
  • FIG. 2 shows a further exemplary embodiment in which the storage container is designed as a squeeze bottle as the dispensing device.
  • a suction / pressure pump 2 is used as the dispensing device, the structure of which is explained with reference to the drawing.
  • the suction / pressure pump 2 is placed by means of the sealing ring 12 in a sealing manner on the fluid reservoir 1 which is only partially shown here.
  • a piston 3 with an axial pump channel 7 runs in the pressure cylinder 8.
  • the piston 3 is held by a spring 6 at a stop in its upper rest position.
  • the pressure chamber 4, which is connected to the axial pump channel 7, is located between the piston 3 and the ball valve 5.
  • the piston 3 has a smaller outer diameter than the inner diameter of the pressure cylinder 8, so that a gap 14 remains between the outer wall of the piston and the inner wall of the cylinder, which, however, is closed at the bottom by the circumferential sealing lip 9 of the piston.
  • the pressure cylinder 8 In the lower region of the pressure chamber 4, the pressure cylinder 8 has a section 10 with a larger inner diameter, in which the sealing lip 9 does not have a sealing effect.
  • An actuating element 20 placed on the piston 3 has a riser pipe 21 with a pressure relief valve 22 for dispensing the fluid through an outlet opening 23. In the upper rest position of the piston 3 shown in the drawing, the sealing lip 9 seals the pressure chamber 4 from the openings 13 to the fluid container 1.
  • the plunger 11 is firmly connected to the piston 3, the section 15 with a star-shaped cross section leaving a connection between the pressure chamber 4 and the pump channel 7 free. In the rest position of the pump, the plunger 11 is at a distance from the ball valve 5, so that it opens in the pressure chamber 4 with respect to the fluid container 1 when the pressure is high and closes when the pressure is low.
  • the path of the fluid from the fluid container 1 through the dispensing device 2 is shown schematically by the arrow beginning at 27. When the ball valve 5 is open, the fluid passes through it into the Pump channel 7 and passes through the open pressure relief valve 22 to the outlet opening
  • oiigodynamically active substances are arranged on the exit path of the fluid just described. So these substances can, for example, on the spring 6, the inner walls of the pump channel 7, in the pressure relief valve 22 or at the outlet opening
  • at least part of the circumference is between the piston 3 and the section 18 a gap 19.
  • means are provided in the area of the air inlet path which disinfect the air.
  • Such means are a sterile filter, a membrane through which the air passes through permeation, germ-absorbing or germ-adsorbing materials, oiigodynamically active or microbicidal substances and combinations thereof.
  • a sterile filter 25, through which the air must pass on its entry path, can be arranged in area 24.
  • the very narrow gap 19 is suitable, e.g. to attach metallic silver as an oiigodynamically effective substance.
  • the fluid is dispensed by means of a squeeze bottle 31.
  • the fluid is dispensed by squeezing the squeeze bottle 31 through the fluid outlet 29.
  • a valve 28 for example a check valve, is provided at the fluid outlet 29.
  • means for disinfecting or reducing the germs of the fluid are provided in the fluid-contacting parts.
  • the dispensing device of this exemplary embodiment has an air inlet 30 which is guided separately from the fluid outlet 29.
  • Means 32 for sterilizing, sterilizing or reducing the germs of the inflowing air are also provided at the air inlet 30.
  • a sterile filter 32 can be used for air disinfection, and substances such as silver, for example, which have an oligodynamic effect, can be used for germ reduction or disinfection of the fluid. It should be emphasized that the disinfection of the fluid is carried out separately from the disinfection of the air. This makes it possible to provide and selectively use various means for fluid or air disinfection.
  • the dispensing devices of these exemplary embodiments are designed in such a way that they can be adapted to any conventional storage bottles and various pump versions for vertical and horizontal dispensing can be converted with this system.
  • the fluid in the storage container is effectively protected against contamination in an inexpensive manner, so that preservatives can be dispensed with. Preservatives are questionable substances and lead to undesirable side effects.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

The invention concerns a device designed to dispense fluids from a container, air flowing back into the container (1) to equalize the pressure when fluid is dispensed. The dispenser has, located in the region of the air inlet, sterilization or germ-reduction means and, separate from these, disposed along at least part of the fluid outlet, fluid-sterilization or germ-reduction means. This makes it possible for the dispenser to be fitted to existing conventional containers and refill systems and to protect the fluid in the container inexpensively and effectively from contamination, thus making preservatives unnecessary. The dispenser can be in the form of a pump (2) or it can be designed to be fitted to a squeeze bottle (31).

Description

Vor Kontamination schützende Abgabevorrichtung für Fluide Contamination protective dispenser for fluids

Die Erfindung betrifft Abgabevorrichtungen für Fluide, bei denen zum Druckausgleich Luft zurückströmt, nach dem Oberbegriff des Anspruches 1.The invention relates to dispensing devices for fluids in which air flows back to equalize pressure, according to the preamble of claim 1.

Bekannt sind herkömmliche Abgabevorrichtungen bzw. Dosierpumpen für Pharmazeutika oder Kosmetika. Derartige Abgabevorrichtungen sind auf einem Vorratsbehalter für das abzugebende Fluid befestigt. Um das Entstehen eines Unterdrucks bei der Abgabe des Fluids in dem Vorratsbehalter zu vermeiden, strömt Umgebungsluft in den Vorratsbehalter ein. Der Nachteil solcher Abgabevorrichtungen ist, daß die einströmende Luft verkeimt ist und somit das Fluid im Vorratsbehalter kontaminiert. Desweiteren verkeimt das Fluid an der Austrittsöffnung durch Kontakt mit der Umgebung. Diese Verkeimung kann durch den Austrittsweg des Fluids in den Vorratsbehalter zum Vorratsfluid durchwachsen und dieses kontaminieren. Eine solche Kontamination führt bei Pharmazeutika und Kosmetika zum Verderb und zur Gefahr für den Anwender.Conventional dispensing devices or metering pumps for pharmaceuticals or cosmetics are known. Dispensing devices of this type are fastened on a storage container for the fluid to be dispensed. In order to avoid the creation of a negative pressure when dispensing the fluid in the storage container, ambient air flows into the storage container. The disadvantage of such dispensing devices is that the inflowing air is contaminated and thus contaminates the fluid in the storage container. Furthermore, the fluid germs at the outlet opening through contact with the environment. This contamination can grow through the outlet path of the fluid into the reservoir to the reservoir fluid and contaminate it. Such contamination leads to spoilage and danger to the user in pharmaceuticals and cosmetics.

Aus diesem Grund sind sogen. „Airless-Systeme" entwickelt worden, bei denen ein Druckausgleich im Vorratsbehalter nicht erforderlich ist, d.h. , keine Umgebungsluft in den Vorratsbehalter einströmen muß. Dieses wird durch einen speziellen Vorratsbehalter erreicht. Es gibt Vorratsbehalter mit Schleppkolben, bei denen das Volumen des Vorratsbehälters bei der Fluidabgabe durch einen Schleppkolben verringert wird. Nachteilig ist hierbei, daß nur zylinderförmige Vorratsbehalter verwendet werden können. Desweiteren gibt es doppel wandige Vorratsflaschen, bei denen sich das Vorratsfluid in einem verformbaren Innenbeutel befindet und einströmende Umgebungsluft für den Druckausgleich zwischen einem festen Außenbehälter und einem verformbaren Innenbehälter aufgenommen wird. Ferner gibt es Vorratsbehalter, in denen keimfreie Luft unter erhöhtem Innendruck aufgenommen ist. Nachteilig an all diesen Systemen ist, daß man für die Abgabevorrichtung ein spezielles Behältnis benötigt. Dies macht das System sehr aufwendig in der Herstellung und nicht anpassungsfähig an bereits vorhandene herkömmliche Vorratsbehalter und Abfüllsysteme. Weiterhin ist ein solches System sehr teuer, so daß es damit nicht möglich ist, Pharmazeutika und Kosmetika im unterenFor this reason, so-called "Airless systems" have been developed in which pressure equalization in the storage container is not necessary, ie no ambient air has to flow into the storage container. This is achieved by a special storage container. There are storage containers with drag pistons in which the volume of the storage container at the The disadvantage of this is that only cylindrical storage containers can be used, there are also double-walled storage bottles in which the storage fluid is in a deformable inner bag and inflowing ambient air for pressure equalization between a fixed outer container and a deformable inner container There are also storage containers in which sterile air is accommodated under increased internal pressure. The disadvantage of all these systems is that a special container is required for the dispensing device. This makes the system very expensive Finished in production and not adaptable to existing conventional storage containers and filling systems. Furthermore, such a system is very expensive, so that it is not possible to lower pharmaceuticals and cosmetics

Preisniveau ohne Konservierungsmittel anzubieten. Konservierungsmittel haben unabhängig vom Preisniveau der Produkte für den Verbraucher schädliche Wirkungen. Sie sind bedenkliche Substanzen und führen zu unerwünschten Nebenwirkungen.Offer price level without preservatives. Preservatives have harmful effects for consumers regardless of the price level of the products. They are questionable substances and lead to undesirable side effects.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs erwähnten Art zur Mehrfachabgabe von Fluiden aus einem Vorrat mit einem Druckausgleich durch Luft bereitzustellen, die das Vorratsfluid vor Kontamination mit Keinem schützt und somit auf Einsatz von Konservierungsmittel verzichtet werden kann.The invention has for its object to provide a device of the type mentioned above for multiple dispensing of fluids from a supply with a pressure equalization by air, which protects the supply fluid from contamination with nobody and thus can be dispensed with the use of preservatives.

Eine weitere Aufgabe der vorliegenden Erfindung ist es, eine Abgabevorrichtung für Fluide bereitzustellen, die sich an herkömmliche Vorratsbehalter anpassen läßt und sich kostengünstig herstellen läßt.Another object of the present invention is to provide a dispensing device for fluids which can be adapted to conventional storage containers and which can be produced inexpensively.

Diese Aufgabe wird durch die im Anspruch 1 beanspruchten Merkmale gelöst.This object is achieved by the features claimed in claim 1.

Weitere Ausgestaltungen ergeben sich aus den Unteransprüchen.Further refinements result from the subclaims.

Die vorliegende Erfindung verwendet eine Abgabevorrichtung für Fluide, bei der der Fluidausgangsweg zumindest in einem Teil getrennt von dem Lufteingangsweg für dieThe present invention uses a fluid dispenser in which the fluid exit path is at least in part separate from the air entry path for the

Luft, die zum Druckausgleich in das Vorratsgefäß gelangen soll, geführt ist. Auf diese Art und Weise können die Luftkeime und Fluidkeime getrennt voneinander unwirksam gemacht werden. Dies hat den Vorteil, daß für die Entkeimung des Fluids bzw. der Luft unterschiedliche Methoden verwendet werden können, die jeweils an die verschiedenen Bedürfnisse angepaßt werden können. Die Entkeimung oder Keimreduktion des Fluids geschieht im Bereich des Austrittsweges desselben durch oligodynamisch wirksame Substanzen. Es können Schwermetall und/oder Schwermetall-Legierungen in metallischer und/oder ionischer Form verwendet werden. Als besonders vorteilhaft hat sich die Verwendung von Silber gezeigt. Die Entkeimung oder Keimreduktion des Fluids im Bereich des Austrittsweges des Fluids bewirkt, daß keine Keime von der mit derAir that is to enter the storage vessel for pressure equalization is guided. In this way, the air germs and fluid germs can be rendered ineffective separately from one another. This has the advantage that different methods can be used for the disinfection of the fluid or the air, each of which can be adapted to the different needs. The disinfection or germ reduction of the fluid takes place in the area of the outlet path of the fluid by oligodynamically active substances. Heavy metal and / or heavy metal alloys in metallic and / or ionic form can be used. The use of silver has proven to be particularly advantageous. The disinfection or germ reduction of the fluid in the region of the exit path of the fluid has the effect that no germs from the one with the

Umgebung in Berührung kommenden Austrittsöffnung entgegen der Fließrichtung des Fluids am Ventil vorbei (z.B. durch Wachstum) in den Vorratsbehalter gelangen können und daß das keimfreie Fluid aus dem Vorratsbehalter bei der Ausbringung nicht mit kontaminierten Restmengen (z.B. ander Austrittsöffnung) kontaminiert wird und die mikrobiologische Qualität dadurch für den Verbraucher bedenklich wird. Weiterhin wird ein Wachstum der Keime an der Austrittsöffnung und in allen Bereichen der Abgabevorrichtung verhindert, insbesondere bei einer Pumpe oder einem Ventil.Outlet opening coming into contact with the environment in the opposite direction of the flow of the fluid past the valve (for example through growth) into the storage container and that the aseptic fluid from the storage container is not contaminated with contaminated residual quantities (for example at the outlet opening) when it is being dispensed, and the microbiological quality thereby becomes unsafe for the consumer. Furthermore, growth of the germs at the outlet opening and in all areas of the dispensing device is prevented, in particular in the case of a pump or a valve.

Die Entkeimung der zum Druckausgleich in den Vorratsbehalter einströmenden Luft kann desweiteren durch andere auf die Luftkeime abgestimmte Methoden erlangt werden. So kann die Luft auf ihrem Eintrittsweg durch einen Sterilfilter geführt werden oder durch Permeation durch eine im Luftweg befindliche Membran in den Vorratsbehalter gelangen. Auf diese Art und Weise können die Luftkeime wirksam zurückgehalten werden. Ferner kann die Luft auf ihrem Eintrittsweg an absorbierenden oder adsorbierenden Materialien vorbeigeführt werden, die die Luftkeime festhalten. Hierbei können insbesondere elektrostatische Kräfte ausgenutzt werden. Weiterhin kann auch die Luftentkeimung durch oiigodynamisch wirksame Substanzen, die in dem Eintrittsweg der Luft angeordnet sind, erreicht werden. Wichtig ist auch, daß diese Mittel kombiniert werden können, z.B. werden Keime absorbiert an Mittel, die gleichzeitig mikrobizide Eigenschaften aufweisen.The disinfection of the air flowing into the storage container for pressure equalization can furthermore be achieved by other methods which are matched to the airborne germs. For example, the air can be passed through a sterile filter on its entry path or can reach the storage container through permeation through a membrane located in the airway. In this way, the airborne germs can be effectively retained. Furthermore, the air can be guided past absorbent or adsorbing materials on their entry path, which hold the airborne germs. In particular, electrostatic forces can be used here. Furthermore, air disinfection can also be achieved by means of oiigodynamically active substances which are arranged in the air inlet path. It is also important that these agents can be combined, e.g. germs are absorbed by agents that also have microbicidal properties.

Ein weiterer Vorteil, der sich aus der getrennten Entkeimung des Fluids und der Luft ergibt, ist, daß Substanzen, die zur Luftentkeimung verwendet werden, mit dem Fluid nicht in Berührung kommen. Dadurch wird verhindert, daß irgendwelche produktfremden Stoffe in das Fluid gelangen und damit dem Verbraucher zugeführt werden.Another advantage that results from the separate disinfection of the fluid and the air is that substances that are used for air disinfection do not come into contact with the fluid. This prevents any foreign substances from getting into the fluid and thus being supplied to the consumer.

Die Abgabevorrichtung kann eine Pumpe sein, die auf einen herkömmlichen Vorratsbehalter aufgesetzt ist. Dabei können die zumindest in einem Teil getrennt geführten Fluidausgangs- und Lufteingangswege in der Pumpe integriert sein.The dispensing device can be a pump which is placed on a conventional storage container. The fluid outlet and air inlet paths, which are routed separately in at least one part, can be integrated in the pump.

Ferner kann für die Abgabe des Fluids der Vorratsbehalter als eine Quetschflasche ausgebildet sein, wobei in diesem Fall vorteilhafterweise am Fluidausgang ein Ventil vorgesehen ist. Im Folgenden sollen Ausführungsbeispiele der vorliegenden Erfindung anhand der angefügten Zeichnungen detailliert erläutert werden.Furthermore, the reservoir can be designed as a squeeze bottle for dispensing the fluid, in which case a valve is advantageously provided at the fluid outlet. Exemplary embodiments of the present invention are to be explained in detail below with reference to the attached drawings.

Fig. 1 zeigt als Beispiel eine Abgabevorrichtung, bei der Mittel zur Entkeimung des Fluids und getrennt davon Mittel zur Entkeimung der einströmenden Luft verwendet werden.1 shows an example of a dispensing device in which means for disinfecting the fluid and, separately therefrom, means for disinfecting the inflowing air are used.

Fig. 2 zeigt ein weiteres Ausführungsbeispiel, bei dem als Abgabevorrichtung der Vorratsbehalter als Quetschflasche ausgebildet ist.FIG. 2 shows a further exemplary embodiment in which the storage container is designed as a squeeze bottle as the dispensing device.

In einem ersten in Fig. 1 dargestellten Ausführungsbeispiel wird als Abgabevorrichtung eine Saug/Druckpumpe 2 verwendet, deren Aufbau anhand der Zeichnung erläutert wird. Die Saug/Druckpumpe 2 ist mittels des Dichtringes 12 dichtend auf dem hier nur teilweise dargestellten Fluidvorratsbehälter 1 aufgesetzt. Im Druckzylinder 8 läuft ein Kolben 3 mit einem axialen Pumpkanal 7. Der Kolben 3 wird von einer Feder 6 an einem Anschlag auf seiner oberen Ruheposition gehalten. Zwischen dem Kolben 3 und dem Kugelventil 5 befindet sich die Druckkammer 4, die mit dem axialen Pumpkanal 7 verbunden ist. Der Kolben 3 hat einen kleineren Außendurchmesser als der Innendurchmesser des Druckzylinders 8, so daß ein Spalt 14 zwischen Kolbenaußenwand und Zylinderinnenwand verbleibt, der nach unten jedoch von der umfangseitigen Dichtlippe 9 des Kolbens verschlossen wird. Im unteren Bereich der Druckkammer 4 weist der Druckzylinder 8 einen Abschnitt 10 mit größerem Innendurchmesser auf, in dem die Dichtlippe 9 nicht dichtend wirkt. Ein auf dem Kolben 3 aufgesetztes Betätigungselement 20 weist ein Steigrohr 21 mit einem Überdruckventil 22 zur Abgabe des Fluids durch eine Auslaßöffnung 23 auf. In der in der Zeichnung dargestellten oberen Ruheposition des Kolbens 3 dichtet die Dichtlippe 9 die Druckkammer 4 gegenüber den Öffnungen 13 zum Fluidbehälter 1 ab. Der Stößel 11 ist fest mit dem Kolben 3 verbunden, wobei der Abschnitt 15 mit sternförmigem Querschnitt eine Verbindung zwischen Druckkammer 4 und Pumpkanal 7 freiläßt. In der Ruheposition der Pumpe hat der Stößel 11 einen Abstand vom Kugelventil 5, so daß dieses sich bei Überdruck in der Druckkammer 4 gegenüber dem Fluidbehälter 1 öffnet und bei Unterdruck schließt. Der Weg des Fluids aus dem Fluidbehälter 1 durch die Abgabevorrichtung 2 ist durch den bei 27 beginnenden Pfeil schematisch dargestellt. Bei geöffnetem Kugelventil 5 tritt das Fluid durch dieses in den Pumpkanal 7 ein und gelangt durch das geöffnete Überdruckventil 22 zur AuslaßöffnungIn a first exemplary embodiment shown in FIG. 1, a suction / pressure pump 2 is used as the dispensing device, the structure of which is explained with reference to the drawing. The suction / pressure pump 2 is placed by means of the sealing ring 12 in a sealing manner on the fluid reservoir 1 which is only partially shown here. A piston 3 with an axial pump channel 7 runs in the pressure cylinder 8. The piston 3 is held by a spring 6 at a stop in its upper rest position. The pressure chamber 4, which is connected to the axial pump channel 7, is located between the piston 3 and the ball valve 5. The piston 3 has a smaller outer diameter than the inner diameter of the pressure cylinder 8, so that a gap 14 remains between the outer wall of the piston and the inner wall of the cylinder, which, however, is closed at the bottom by the circumferential sealing lip 9 of the piston. In the lower region of the pressure chamber 4, the pressure cylinder 8 has a section 10 with a larger inner diameter, in which the sealing lip 9 does not have a sealing effect. An actuating element 20 placed on the piston 3 has a riser pipe 21 with a pressure relief valve 22 for dispensing the fluid through an outlet opening 23. In the upper rest position of the piston 3 shown in the drawing, the sealing lip 9 seals the pressure chamber 4 from the openings 13 to the fluid container 1. The plunger 11 is firmly connected to the piston 3, the section 15 with a star-shaped cross section leaving a connection between the pressure chamber 4 and the pump channel 7 free. In the rest position of the pump, the plunger 11 is at a distance from the ball valve 5, so that it opens in the pressure chamber 4 with respect to the fluid container 1 when the pressure is high and closes when the pressure is low. The path of the fluid from the fluid container 1 through the dispensing device 2 is shown schematically by the arrow beginning at 27. When the ball valve 5 is open, the fluid passes through it into the Pump channel 7 and passes through the open pressure relief valve 22 to the outlet opening

23. Um eine Kontamination des Vorratsfluids in dem Fluidbehälter 1 zu verhindern, sind auf dem eben beschriebenen Austrittsweg des Fluids oiigodynamisch wirksame Substanzen angeordnet. So können diese Substanzen beispielsweise auf der Feder 6, den Innenwandungen des Pumpkanals 7, im Überdruckventil 22 oder an der Austrittsöffnung23. In order to prevent contamination of the supply fluid in the fluid container 1, oiigodynamically active substances are arranged on the exit path of the fluid just described. So these substances can, for example, on the spring 6, the inner walls of the pump channel 7, in the pressure relief valve 22 or at the outlet opening

23 angeordnet sein.23 may be arranged.

Zum Druckausgleich im Fluidbehälter 1 bei der Abgabe des Fluids tritt Luft von der Umgebung bei 26 in die Abgabevorrichtung ein, gelangt dann, wie in der Zeichnung anhand des Pfeils schematisch dargestellt, in den Fluidbehälter 1. Hierzu befindet sich zumindest auf einem Teil des Umfangs zwischen dem Kolben 3 und dem Abschnitt 18 ein Spalt 19. Zur Entkeimung der eintretenden Luft sind im Bereich des Lufteintrittsweges Mittel vorgesehen, die die Luft entkeimen. Als solche Mittel kommen ein Sterilfilter, eine Membran, durch die die Luft durch Permeation gelangt, keimabsorbierende oder keimadsorbierende Materialien, oiigodynamisch wirksame oder mikrobizide Substanzen sowie Kombinationen davon in Frage. Beispielsweise kann im Bereich 24 ein Sterilfilter 25, durch den die Luft auf ihrem Eintrittsweg gelangen muß, angeordnet sein. Ferner eignet sich der sehr eng ausgebildete Spalt 19 dazu, z.B. metallisches Silber als oiigodynamisch wirksame Substanz anzubringen.To equalize the pressure in the fluid container 1 when the fluid is being dispensed, air enters the dispenser from the environment at 26 and then, as shown schematically in the drawing by the arrow, enters the fluid container 1. For this purpose, at least part of the circumference is between the piston 3 and the section 18 a gap 19. To disinfect the incoming air, means are provided in the area of the air inlet path which disinfect the air. Such means are a sterile filter, a membrane through which the air passes through permeation, germ-absorbing or germ-adsorbing materials, oiigodynamically active or microbicidal substances and combinations thereof. For example, a sterile filter 25, through which the air must pass on its entry path, can be arranged in area 24. Furthermore, the very narrow gap 19 is suitable, e.g. to attach metallic silver as an oiigodynamically effective substance.

In einem weiteren in Fig. 2 dargestellten Ausfuhrungsbeispiel erfolgt die Abgabe des Fluids mittels einer Quetschflasche 31. Dabei wird das Fluid durch Zusammendrücken der Quetschflasche 31 durch den Fluidausgang 29 abgegeben. Am Fluidausgang 29 ist ein Ventil 28, beispielsweise ein Rückschlagventil, vorgesehen. In diesem Ventil sind in den fluidberührenden Teilen Mittel zur Entkeimung oder Keimreduktion des Fluids vorgesehen. Ferner weist die Abgabevorrichtung dieses Ausführungsbeispiels einen getrennt vom Fluidausgang 29 geführten Lufteingang 30 auf. Auch am Lufteingang 30 sind Mittel 32 zur Sterilisation, Entkeimung oder Keimreduktion der einströmenden Luft vorgesehen. Für die Luftentkeimung kann beispielsweise ein Sterilfilter 32 verwendet werden und für die Keimreduktion bzw. Entkeimung des Fluids können Substanzen, wie z.B. Silber, verwendet werden, die eine oligodynamische Wirkung aufweisen. Es soll hervorgehoben werden, daß die Entkeimung des Fluids getrennt von der Entkeimung der Luft vorgenommen wird. Dadurch ist es möglich, verschiedene Mittel zur Fluid- bzw. Luftentkeimung bereitzustellen und selektiv einzusetzen. Weiterhin sind die Abgabevorrichtungen dieser Ausführungsbeispiele so ausgeführt, daß sie an beliebige herkömmliche Vorratsflaschen angepaßt werden können und verschiedene Pumpversionen für vertikale und horizontale Ausbringung mit diesem System umgerüstet werden können.In a further exemplary embodiment shown in FIG. 2, the fluid is dispensed by means of a squeeze bottle 31. The fluid is dispensed by squeezing the squeeze bottle 31 through the fluid outlet 29. A valve 28, for example a check valve, is provided at the fluid outlet 29. In this valve, means for disinfecting or reducing the germs of the fluid are provided in the fluid-contacting parts. Furthermore, the dispensing device of this exemplary embodiment has an air inlet 30 which is guided separately from the fluid outlet 29. Means 32 for sterilizing, sterilizing or reducing the germs of the inflowing air are also provided at the air inlet 30. For example, a sterile filter 32 can be used for air disinfection, and substances such as silver, for example, which have an oligodynamic effect, can be used for germ reduction or disinfection of the fluid. It should be emphasized that the disinfection of the fluid is carried out separately from the disinfection of the air. This makes it possible to provide and selectively use various means for fluid or air disinfection. Furthermore, the dispensing devices of these exemplary embodiments are designed in such a way that they can be adapted to any conventional storage bottles and various pump versions for vertical and horizontal dispensing can be converted with this system.

Das Fluid im Vorratsbehalter wird auf preiswerte Art vor Kontamination wirksam geschützt, so daß auf Konservierungsmittel verzichtet werden kann. Konservierungsmittel sind bedenliche Substanzen und führen zu unerwünschten Nebenwirkungen. The fluid in the storage container is effectively protected against contamination in an inexpensive manner, so that preservatives can be dispensed with. Preservatives are questionable substances and lead to undesirable side effects.

Claims

A N S P R Ü C H E EXPECTATIONS 1. Abgabevorrichtung (2) für Fluide aus einem Vorratsbehalter (1), bei der das Fluid durch einen Fluidausgang (23) abgegeben wird und bei der während der Abgabe des Fluids Luft zum Druckausgleich in den Vorratsbehalter (1) durch einen Lufteingang einströmt, dadurch gekennzeichnet, daß zumindest in einem Teil des Lufteingangs Mittel zur Sterilisation, Entkeimung oder Keimreduktion der Luft vorgesehen sind und getrennt davon zumindest in einem Teil des Fluidausgangs Mittel zur Sterilisation, Entkeimung oder Keimreduktion des Fluids vorgesehen sind.1. Dispensing device (2) for fluids from a storage container (1), in which the fluid is discharged through a fluid outlet (23) and in which air for pressure compensation flows into the storage container (1) through an air inlet during the dispensing of the fluid, thereby characterized in that at least part of the air inlet means for sterilizing, sterilizing or reducing the air are provided and separately for at least part of the fluid outlet means for sterilizing, sterilizing or reducing the fluid are provided. 2. Abgabevorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zur Sterilisation, Entkeimung oder Keimreduktion des Fluids im Fluidausgangsbereich und/oder der Luft im Lufteingangsbereich Oberflächen oder Einrichtungen, die mit dem Fluid und/oder der Luft in Berührung kommen, vorgesehen sind, die mit Substanzen versehen sind, die eine oligodynamische Wirkung oder keimreduzierende Eigenschaften aufweisen.2. Dispensing device according to claim 1, characterized in that for the sterilization, sterilization or germ reduction of the fluid in the fluid outlet area and / or the air in the air inlet area, surfaces or devices which come into contact with the fluid and / or the air are provided with Substances are provided that have an oligodynamic effect or germ-reducing properties. 3. Abgabevorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die oiigodynamisch wirksame Substanz ein Schwermetall und/oder eine Schwermetall- Legierung ist, die in metallischer und/oder ionischer Form wirksam ist3. Dispensing device according to claim 2, characterized in that the oiigodynamically active substance is a heavy metal and / or a heavy metal alloy which is effective in metallic and / or ionic form 4. Abgabevorrichtung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die oiigodynamisch wirksame Substanz Silber ist.4. Dispensing device according to one of claims 2 or 3, characterized in that the oiigodynamically active substance is silver. 5. Abgabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mittel zur Sterilisation, Entkeimung oder Keimreduktion der Luft bzw. des Fluids unterschiedlich sind.5. Dispenser according to one of the preceding claims, characterized in that the means for sterilizing, sterilizing or reducing germs in the air or the fluid are different. 6. Abgabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mittel zur Sterilisation, Entkeimung oder Keimreduktion der Luft und/oder des Fluids keimabsorbierende und/oder keimadsorbierende Substanzen sind..6. Dispensing device according to one of the preceding claims, characterized in that the means for sterilizing, sterilizing or reducing bacteria in the air and / or the fluid are germ-absorbing and / or germ-adsorbing substances. 7. Abgabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Sterilisation, Entkeimung oder Keimreduktion der Luft und/oder des Fluids durch Keimfiltration und/oder Permeation erfolgt.7. Dispensing device according to one of the preceding claims, characterized in that the sterilization, sterilization or germ reduction of the air and / or the fluid is carried out by germ filtration and / or permeation. 8. Abgabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mittel zur Sterilisation, Entkeimung oder Keimreduktion von Luft und/oder Fluid organische Substanzen sind, die mikrobizide Eigenschaften aufweisen.8. Dispensing device according to one of the preceding claims, characterized in that the means for sterilizing, sterilizing or reducing bacteria in air and / or fluid are organic substances which have microbicidal properties. 9. Abgabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mittel zur Sterilisation, Entkeimung oder Keimreduktion von Luft und/oder Fluid eine Kombination aller oben genannten Mittel darstellt.9. Dispensing device according to one of the preceding claims, characterized in that the means for sterilizing, sterilizing or reducing germs of air and / or fluid is a combination of all of the above means. 10. Abgabevorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abgabevorrichtung eine Pumpe (2) ist.10. Dispenser according to one of the preceding claims, characterized in that the dispenser is a pump (2). 11. Abgabevorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Abgabevorrichtung dadurch gebildet ist, daß der Vorratsbehalter eine Quetsch Hasche (31) ist. 11. Dispensing device according to one of claims 1 to 9, characterized in that the dispensing device is formed in that the storage container is a pinch hash (31). 12. Abgabevorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß am Fluidausgang (29) ein Ventil (28) vorgesehen ist. 12. Dispensing device according to claim 11, characterized in that a valve (28) is provided at the fluid outlet (29).
PCT/EP1996/004356 1995-11-17 1996-10-08 Fluids dispenser designed to protect the contents from contamination Ceased WO1997018902A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59610157T DE59610157D1 (en) 1995-11-17 1996-10-08 DISPENSING DEVICE FOR FLUIDS PROTECTING FROM CONTAMINATION
EP96934570A EP0861128B1 (en) 1995-11-17 1996-10-08 Fluids dispenser designed to protect the contents from contamination
US09/068,801 US6053368A (en) 1995-11-17 1996-10-08 Anti-contamination dispensing apparatus for fluids

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE29518284U DE29518284U1 (en) 1995-11-17 1995-11-17 Contamination protective dispenser for fluids
DE19542959.1 1995-11-17
DE19542959A DE19542959C1 (en) 1995-11-17 1995-11-17 Dosing pump for pharmaceuticals, with anti-contamination protection
DE19609880.7 1996-03-13
DE19609880A DE19609880A1 (en) 1995-11-17 1996-03-13 Contamination protective dispenser for fluids

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DE19609880A1 (en) 1997-09-18

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