EP1334047B1 - Device for storing and dispensing flowable compositions - Google Patents

Device for storing and dispensing flowable compositions Download PDF

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Publication number
EP1334047B1
EP1334047B1 EP01993384A EP01993384A EP1334047B1 EP 1334047 B1 EP1334047 B1 EP 1334047B1 EP 01993384 A EP01993384 A EP 01993384A EP 01993384 A EP01993384 A EP 01993384A EP 1334047 B1 EP1334047 B1 EP 1334047B1
Authority
EP
European Patent Office
Prior art keywords
chamber
film
chambers
substance
area
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.)
Expired - Lifetime
Application number
EP01993384A
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German (de)
French (fr)
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EP1334047A1 (en
Inventor
Marc Peuker
Martin Hartung
Dirk MÜLLER
Roland Brem
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.)
3M Deutschland GmbH
Original Assignee
3M Espe AG
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Filing date
Publication date
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Publication of EP1334047A1 publication Critical patent/EP1334047A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3261Flexible containers having several compartments
    • B65D81/3266Flexible containers having several compartments separated by a common rupturable seal, a clip or other removable fastening device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3294Thermoformed trays or the like with a plurality of recesses for different materials located in different recesses

Definitions

  • the invention relates to a device for storing and dispensing a flowable after mixing composition of at least two components.
  • the first recess may contain a small amount of liquid, in the other recess may be inserted a brush.
  • a disposable container which has troughs for storing a medicament and an applicator. Both troughs are protected from contamination by a peelable cover film.
  • the medicament is transferred to the well containing the applicator by pressing on the well containing the medicament to wet the applicator. It is stated that this is only possible if the cover film is not glued to the container in the transition region of the two troughs.
  • a care set which has two wells in a body, containing on the one hand a care substance and the other a swab. Through a sealing film containing the care substance and the swab main body is protected from contamination.
  • EP 0 895 943 A discloses a device for storing and applying a flowable substance, comprising a container made of two films which are joined together to form two chambers for holding substances and a pocket separate from the chambers for removing the mixture of the two substances are, wherein the separation between a chamber and the pocket has a selectively openable passage area.
  • pressure is first exerted on the one chamber, whereby the substance contained therein via the passage area is transferred to the second chamber.
  • an overpressure builds up in the second chamber, which leads to a bulge of one of the chambers forming the chambers.
  • it is necessary for the device In order to prevent the mixture from flowing back into the first chamber, it is necessary for the device to be bent in the area between the two chambers. Here, operating errors are not excluded.
  • a disadvantage of the devices known from the prior art is therefore that they are only conditionally suitable for dispensing homogeneous compositions which can be obtained by mixing two substances stored separately in the device, in particular in the case of compositions whose individual constituents are in different volumes or aggregate states present, a homogeneous and reproducible mixing result can often not be guaranteed.
  • the primary object of the present invention is to provide an improved apparatus for storing and dispensing mixtures.
  • Another object can be seen to provide a device that allows the storage and deployment of larger amounts of substance without the mixing result is impaired.
  • a further object can be seen to provide a multi-chamber device which largely prevents backflow of the mixture to be delivered into one of the chambers of the device when dispensing.
  • the apparatus enables storage, mixing and dispensing of flowable compositions, the individual ingredients of which may be stored separately prior to mixing in the apparatus.
  • the device will characterized in that pressure is applied to the first chamber whereby the substance located in this chamber is transferred via the selectively openable passage area in the second chamber.
  • the passage area to be selectively opened thus represents, as it were, a type of predetermined breaking point.
  • the second chamber as in the device according to EP 0 895 943 A, can not completely absorb the first substance or only under difficult conditions, only part of the first substance can be mixed with the second substance. This is disadvantageous, since a reproducible mixing result is required, in particular in the medical field. Mixtures with concentration deviations of individual components are useless in many cases.
  • the present invention defined in claim 1 solves this problem, since according to the invention, the second chamber is such that it can accommodate a first substance in addition to a second substance, both substances can be mixed in the device, without that the device previously opened must be, but this is easily possible after mixing.
  • the at least one of the chambers forming the chambers of the device is preformed or plastically moldable at least in the region of the second chamber.
  • the device according to the invention also makes it possible to follow the activation of the device in particular optically by exerting pressure on the first chamber.
  • the transfer of the first substance from the first chamber into the second chamber causes a permanent increase in volume of the second chamber, which can be detected from the outside during the application.
  • preformed in the sense of the invention is understood to mean a plastic, defined deformation or preforming of a film, wherein the film can be controlled and specifically transferred from this mold into another form. This includes pre-forming by both peelable sealing with a different foil as well as seal-free areas. Preforming can be achieved, for example, by deep drawing a film by means of deep drawing tools.
  • Foils in the sense of the invention are then malleable, in particular plastically moldable, when they yield under deformation upon application of an external force (for example, by an internal pressure in a chamber building up when the device is activated), for example by permanent stretching.
  • Suitable films which can be formed by activating the device preferably have no appreciable elasticity and thus have no appreciable resilience.
  • a film is then stretchable in the sense of the invention if it can be permanently stretched or deformed by the internal pressure building up when the device is activated.
  • the invention enables a minimum packing volume for the substances to be stored and mixed.
  • the substances can be filled into the chambers of the device almost without the inclusion of atmospheric oxygen or other gases in the dead volume, since the required for mixing additional volume in the second chamber automatically provided with the transfer of the first substance from the first to the second chamber becomes.
  • a similar effect can be achieved - but with great technical effort - by filling the device under vacuum.
  • the volume not filled by the substance (dead volume) is replaced by a vacuum, which, after sealing the device and then exposing the device to atmospheric pressure, causes corresponding shrinkage of the volume regions under vacuum leads.
  • the dead volume can be almost completely reduced.
  • the device is particularly suitable for storing, mixing and dispensing substances that are present in different volumes in the device.
  • the smaller volume substance substantially fully participates in the mixing process and prevents misdosing during mixing
  • the substance with the larger volume is expediently stored in the first chamber in this regard.
  • the passage area or areas to be selectively opened can be closed again if necessary.
  • Backflow of the mixed substances into the other chamber is then virtually impossible, so that the mixed substances can be transferred into the discharge region by pressure action on the outer region of the films forming the second chamber.
  • the volume of the first chamber is usually in the range of 0.01 to 100 ml, preferably in the range of 0.05 to 50 ml.
  • the volume of the second chamber is preferably less than or equal to the volume of the first chamber, at least prior to activating the device, and is in the range of 0.001 to 100 ml, preferably in the range of 0.01 to 25 ml.
  • a chamber has for example a diameter of 1 to 100 mm, preferably in the range of 5 to 50 mm.
  • the total volume administered is usually in the range of 0.011 to 200 ml, preferably in the range of 0.06 to 75 ml.
  • the increase in volume can be achieved, for example, by a substantially concave formation of the base film and a substantially convex formation of the cover film (from the point of view of the product filled into the chamber).
  • the cover film is also somewhat deep-drawn in the region of the second chamber and connected to the second film in such a way that the deep-drawn region can bulge outwardly upon activation of the device.
  • the cover sheet is first deep-drawn and then everted so that the dent in the film is on the side opposite the thermoforming tool.
  • the material displacements that have occurred during deep drawing in the film and the tension associated therewith remain at least partially preserved during everting, so that the film as it were is in a quasi-preloaded state and can thus be turned inside out more easily when activated.
  • the cover film thus produced is finally sealed onto the likewise deep-drawn base film.
  • the inverted dent in the cover sheet and the dent in the base film show in the same direction and form between them the volume of the second chamber in the storage condition.
  • the base film seen in cross-section on several wave crests and wave troughs, wherein the film in the Area of a wave trough can be peelbar sealed with the cover sheet, so that the chamber is divided into several compartments.
  • the device is therefore also suitable for storing and mixing more than two substances.
  • the second substance which is expediently peelably sealed in the center of the second chamber, is initially surrounded by a groove-like shape when the device is activated by the first substance transferred from the first chamber into the second chamber without direct contact. With increasing pressure on the first chamber and transfer of an increasing amount of second substance, the seal begins to dissolve in the region of the wave trough, whereby the first substance begins to wet the second substance.
  • Another possibility is to peelably seal the second chamber in an edge region or to press the two films forming the chamber in this area lying flat on each other without peelably sealing them in this region.
  • a non-peelable sealing area adjoins this edge region, which ultimately and especially when activating the device seals the chamber to the outside.
  • This non-peelable (firmly sealed) sealing area is only interrupted in each case by a peelable passage area at the point at which the second chamber opens into the dispensing area or the connection between the first and second chamber is to be established.
  • the increase in volume of the second chamber takes place upon activation of the device in that the cover sheet can be detached from the base film in this area or lifted off.
  • peelably sealed or unsealed edge areas after the increase in volume due to activation of the device, may be more prone to recovery than films converted from a convex shape to a concave shape upon activation.
  • An increase in volume of the second chamber can also be achieved, for example, by virtue of the fact that at least one of the films forming the second chamber is deformable or expandable, in particular plastically deformable.
  • the width of the peelbar sealed edge region is basically arbitrary and depending on the desired increase in volume, a width in the range of 0.1 to 40 mm, preferably from 0.5 to 20 mm has been proven.
  • the selectively openable regions or the peelably sealed regions preferably open when a hydrostatic pressure in the range from 3 to 300 N / cm 2 , particularly preferably in the range from 15 to 150 N / cm 2 , is applied to them by a flowable substance Area is exercised.
  • the pressure to be used for opening the selectively openable regions may vary for each selectively openable region. This allows a directed transfer of the substances to be mixed in the respective chambers up to the application area.
  • slight changes in the geometry of the device, in particular in the region of the second chamber, may occur when the device is activated.
  • one of the films forming the chamber bulges slightly with increasing pressure build-up to the outside.
  • the second chamber is connected via a selectively openable passage area with the discharge area.
  • the mixed composition can be applied to the second chamber by exerting pressure, without the need for additional devices to open the device.
  • the passage region to the first chamber is closed by folding over.
  • application area in the sense of the invention means the area of the device via which the mixed composition is emptied.
  • the dispensing area is designed such that a secure, uniform spreading can be ensured.
  • the substance By introducing flow barriers into the dispensing area, the substance is influenced during the outflow through the dispensing area in such a way that a slow exit from the dispensing area at its mouth is ensured. This also prevents splashing of the substance by exerting high pressure on the second chamber upon sudden opening of the passage area.
  • the increase of the flow resistance and thus the obstruction of the outflow of the substance can be achieved by an extension, optionally with change of direction, of the flow path around the barriers or by the reduction of the flow cross-section through staggered sealing points or sealing webs.
  • an increase in the flow resistance can be achieved by a rectilinear narrowing of the flow cross section in the discharge region.
  • a narrowing by a factor of 1.5 to 5, preferably by a factor of 2, provided.
  • Such a device is particularly suitable when low-viscosity substances without further aids purposeful, easy and without spillage should be applied.
  • the device may have a dispensing area which is arranged geometrically to the passage area such that the longitudinal axis of the dispensing area does not extend through the passage area.
  • the dispensing area can have an enlarged volume, in particular in the part adjacent to the passage area. It is particularly preferred if the dispensing area is designed as a pocket.
  • a suitable valve is, for example, a flexible film (hereinafter referred to as valve film), which is fastened in the passage region between the two chambers, for example on the base film and projects into the second chamber.
  • valve film a flexible film
  • the first substance can be transferred from the first chamber into the second chamber.
  • the valve foil prevents the substances located in the second chamber from flowing back, blocking the passage area.
  • This embodiment brings u.a. the advantage that the device in the passage area between the two chambers need not be kinked after activation in order to exclude that substance flows back into the first chamber.
  • valve film additionally completely or partially lines the first chamber and optionally extends into the firmly sealed edge region of the first chamber. It may be sufficient if the valve film adheres to the base film only in the passage area at its top.
  • the selectively openable passage area in combination with the valve film can also be realized, for example, in the following way:
  • the valve film is connected, for example, to the cover film in the region of the first and second chambers and in the passage area.
  • the valve film has an opening in the region of the first chamber in the vicinity of the selectively openable passage region to the second chamber, which has been punched out of the valve film, for example.
  • the valve film also has in the region of second chamber on a tab or tongue, which can be formed for example by punching or cutting a corresponding shape of the valve film.
  • the separated in the region of the flap residual region of the valve film is not removed, but remains in the region of the second chamber.
  • the valve film is preferably peelably sealed to the cover film only in the passage region.
  • the substance Upon activation of the device, the substance is transferred from the first chamber through the opening in the valve foil via the selectively openable passageway area to the second chamber, with the tab of the valve foil lifting.
  • the tab As soon as substantially the entire amount of the first substance has been transferred to the second chamber, the tab is pressed against the cover sheet in the region of the second chamber or in the existing free-punching by the build-up internal pressure in the second chamber and pressure relief of the first chamber prevents in this way the backflow of the substance into the first chamber.
  • in the selectively openable passage area between the first chamber and the second chamber may be a third chamber which is filled with a third substance.
  • the third chamber is first opened in this case, and the first substance emerging from the first chamber merges with the third substance located in the third chamber before finally entering the second chamber, in which the actual mixing process takes place.
  • This arrangement is particularly suitable for the intensive mixing of the same or different liquids, which are located in the first and second chamber with, for example, a powder, which is located in the intermediate third chamber.
  • the third chamber can be particularly intensively flushed by repeated, mutual exerting pressure on the first and second chamber and the substances contained therein.
  • a volume reservoir located in the first and / or second chamber is advantageous.
  • the device is usually a unit-dose.
  • the device is suitable for storing and dispensing all Substances that require reproducible mixing and dosage that is largely independent of the user.
  • the device has proven itself in human and veterinary medicine as well as in the dental field.
  • the substances to be stored are usually liquids, pastes and / or solids.
  • the solids may be present in powder, tablet or granular form.
  • the device is preferably suitable for storing, mixing and dispensing compositions selected from human and animal medicaments, wound cleansing agents, dental products, adhesives, impression materials, paints, in particular 2-component paints, foods to be stored separately or their constituents.
  • the device essentially comprises a first base or bottom foil and a second top or top foil, which in turn may be formed as multilayer foils.
  • At least one of the films is plastically deformable, preferably thermoformable under deformation.
  • the films used are preferably those which have a sufficient diffusion tightness.
  • the films should also be resistant to aggressive substances, for example corrosive and / or solvent-containing substances.
  • the films are stretched or are in the unstretched state before the device is activated.
  • the film components may be selected from plastic, metal and ceramic films.
  • plastic films are conceivable, for example: PE, PP, PTFE, PET, PA, PBT, PVC, EVA, PVF (polyvinyl fluoride).
  • Possible metal foils are, for example: Al, Sn, Au, Ag, Fe, Pb.
  • Ceramic films are to be understood as meaning films which have, for example, an SiO 2 -containing layer.
  • the film structure is basically arbitrary and is oriented i.a. on the nature of the substances to be stored.
  • a film structure with the sequence from the outside to the inside has proved to be advantageous PET, Al, PET, PE or PP, Al, PET, PE, if appropriate also without PET film as center film.
  • the films are preferably connected to each other with the exception of the chambers forming areas.
  • connection of the first with the second film can be done for example by heat sealing, cold sealing, gluing and / or ultrasonic welding with sonotrodes.
  • a multilayer structure of the first and second film can be achieved by laminating, calendering, laminating various monofilm layers, if appropriate also by vapor deposition, for example with metals.
  • the foils are preferably designed such that they are connected to one another in a region surrounding the chamber by two sealing seams arranged at a distance from one another.
  • the shape of the device is basically arbitrary, but preferably adapted to the nature of the stored substances.
  • the chambers are preferably round (circular or oval) but optionally also square (square, rectangular or triangular).
  • the passageway area is such that it forms a tight seal in the storage condition, both between the two chambers and to the area over which the composition is to be applied.
  • the selectively openable passage area or the predetermined breaking point can be achieved, for example, by cold sealing, heat sealing, ultrasonic welding or gluing, wherein in heat sealing one in comparison to the other Seal areas of different energy input, preferably lower energy input takes place.
  • This can be regulated by temperature, pressure and / or holding time.
  • Another possibility is to introduce in the region of the predetermined breaking point between the first and the second film adhesion-reducing foreign particles such as Peelfolienstienstlinge or Hotmeltklebeumming.
  • the first and the second film adhesion-reducing foreign particles such as Peelfolienstienstlinge or Hotmeltklebe.
  • top and bottom film are preferably used as top and bottom film
  • the dispensing area is preferably open to one side, i. formed in pocket-like, and optionally designed so that a dispensing instrument or an applicator can also bring in the storage condition.
  • the dispensing area can also serve as an application device itself.
  • the separation between the chamber or chambers and the dispensing area is designed with respect to the distance as well as with regard to the strength of the adhesion so that there is a further predetermined breaking point.
  • the optionally existing application instrument is preferably designed brush or swab-like.
  • An application instrument with a spherical, brush or brush hair-bearing tip has proven to be beneficial.
  • pipettes, cotton swabs, sponges, spatulas or spray heads sealed in the dispensing area may be used as the application instrument or devices.
  • a dispensing instrument located in the dispensing region or introduced only at this time or later is wetted when the device is activated and can then be used to apply the released substance.
  • the application instrument is moved in the direction of the second chamber in order to release the passage area to be selectively opened. This also wets the dispensing instrument.
  • the application instrument can be reinserted into the pocket.
  • the application area or the application instrument is designed so that upon reinsertion of this wetting of the outer portion of the application instrument does not take place.
  • the device according to FIG. 1 has a base film (1) and a cover film (2). In region (3), the two films are peelably sealed together, whereby a selectively openable passage area between the two chambers (5) and (6) is formed. In FIG. 1, the dispensing area (4) also has a passage area to be selectively opened. In the chambers (5) and (6) there are two substances to be mixed (A) and (B). The volume of the second chamber (6) can be increased as soon as the device is activated by exerting external pressure on the first chamber (5).
  • the base film (1) in the region of the second chamber (6) is curved concavely outwards and the cover film (2) convexly curved inwards or preformed.
  • the substance (A) from the first chamber (5) is located after activation together with the substance (B) in the second chamber (6).
  • the cover sheet (2) now also has, like the base sheet (1), a concavely convex shape (dashed line in FIG. 1).
  • FIG. 2 shows a further possible embodiment of the device in cross section.
  • the increase in volume of the second chamber (5) can be achieved by preforming the base film (1) in the region of the second Chamber (6) with wave crests (9) and troughs (10).
  • the base film (1) with the cover film (2) can additionally be peelably sealed next to the passage region (3).
  • Both substances (A) and (B) are located after the activation in the second chamber (6) whose volume has been increased by bulging of the wave trough (10) to an overall substantially concave shape (dashed line in Figure 2).
  • FIG. 3 shows a further possible embodiment of the device in cross section.
  • the base film (1) and cover film (2) are preformably preformed from one another. This deformation can be achieved, for example, by peelable sealing of the films in this region or by the film being pressed flat against one another in this region without being peelably sealed in this region.
  • the base film (1) has been separated from the cover film (2) in the edge region (11) of the second chamber (6) after activation (dashed line in FIG. 3). Both substances (A) and (B) are now in the second chamber (6).
  • the resistance in the dispensing area caused by the passage area to be selectively opened must be overcome.
  • Figure 4 shows the device based on Figure 1 in plan view.
  • the dispensing area (4) has flow barriers in the region (13) or is meander-shaped. This prevents splashing as the composition is dispensed from the device.
  • a further film (12) is attached to the base film (1) and protrudes into the second chamber (6), wherein the film (12) is not necessarily deep drawn in the region of the second chamber.
  • This film (12) performs a valve function which prevents that after activation of the device located in the second chamber (6) Substances (A) and (B) can get back into the first chamber (5), when for applying the composition comprising the substances (A) and (B), the second chamber (6) pressure is applied to the to open selectively passage area to be opened outwards in the discharge area.
  • the selectively openable passage region (3) is located in this embodiment between the valve film (12) and the cover sheet (2).
  • the dashed line in Figure 5 shows the device after activation.
  • the cover film (2) has curved due to the built-up internal pressure in the second chamber (6) to the outside. This deformation of the cover film (2) leads to an increase in volume of the second chamber (6) and allows the inclusion of the two substances (A) and (B).
  • the valve film (12) is in this case pressed against the cover film and thereby prevents the backflow of the mixture into the first chamber (5) without the device having to be bent in the passage region between the two chambers.
  • the device also in the production of, for example, with ⁇ -rays or heat sterilizable packaging.
  • the substance stored in the sealed device or the stored substances can be sterilized by the preforming according to the invention at least one of the films easily with the above-mentioned means, even if it comes here for example by increasing the temperature to outgassing of the stored substances without the device itself is activated or opened to the chamber or chambers adjacent selectively open passage areas.
  • This type of use can also be used in devices that have only one chamber for storing a substance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Package Specialized In Special Use (AREA)
  • Packages (AREA)
  • Lubricants (AREA)

Abstract

The invention relates to a device for storing and dispensing a flowable composition. Said device comprises a first ( 1 ) and a second film ( 2 ), a dispensing zone ( 4 ), a first chamber ( 5 ), containing a first substance (A) and a second chamber ( 6 ), containing a second substance (B). Said chambers are interconnected by a transition zone ( 3 ) that can be selectively opened. At least one of the films is deep-drawn in the region of the chambers and at least one of the films is pre-formed in the region of the second chamber, in such a way that once the device has been activated by opening the transition zone, the first substance can to a great extent be completely transferred to a second chamber, increasing the volume of said chamber as a result.

Description

Die Erfindung betrifft eine Vorrichtung zum Lagern und Ausbringen einer nach dem Mischen fließfähigen Zusammensetzung mindestens zweier Komponenten.The invention relates to a device for storing and dispensing a flowable after mixing composition of at least two components.

Das Lagern urrd Auftragen von geringen Flüssigkeitsmengen kann in Behältnissen in Form von "Blister-packungen" erfolgen. In dem von einer abziehbaren Folie verschlossenen tiefgezogenen Teil der Packung sind beispielsweise zwei voneinander getrennte Vertiefungen ausgebildet. Die erste Vertiefung kann eine geringe Flüssigkeitsmenge enthalten, in die andere Vertiefung kann ein Pinsel eingelegt sein.Storage of small quantities of liquid may take place in containers in the form of "blister packs". In the sealed by a peelable film deep-drawn part of the package, for example, two separate recesses are formed. The first recess may contain a small amount of liquid, in the other recess may be inserted a brush.

In WO-96/03326 ist beispielsweise ein Behältnis zum Einmalgebrauch beschrieben, das Mulden zur Aufbewahrung eines Medikaments und eines Applikators aufweist. Beide Mulden sind durch eine peelbare Deckfolie vor Kontamination geschützt. In einer Ausführungsform wird das Medikament durch Drücken auf die das Medikament enthaltende Mulde in die den Applikator enthaltende Mulde überführt, um den Applikator zu benetzen. Es wird ausgeführt, dass dies nur dann möglich ist, wenn die Deckfolie im Übergangsbereich der beiden Mulden mit dem Behältnis nicht verklebt ist.In WO-96/03326, for example, a disposable container is described, which has troughs for storing a medicament and an applicator. Both troughs are protected from contamination by a peelable cover film. In one embodiment, the medicament is transferred to the well containing the applicator by pressing on the well containing the medicament to wet the applicator. It is stated that this is only possible if the cover film is not glued to the container in the transition region of the two troughs.

In der US 3,835,834 wird ein Pflegeset offenbart, das zwei Mulden in einem Grundkörper aufweist, die zum einen eine Pflegesubstanz und zum anderen einen Tupfer enthalten. Durch eine Siegelfolie ist der die Pflegesubstanz und den Tupfer enthaltende Grundkörper vor Verschmutzung geschützt.In US 3,835,834 a care set is disclosed which has two wells in a body, containing on the one hand a care substance and the other a swab. Through a sealing film containing the care substance and the swab main body is protected from contamination.

Aus EP 0 895 943 A ist eine Vorrichtung zum Lagern und Auftragen einer fließfähigen Substanz bekannt, mit einem Behälter aus zwei Folien, die unter Bildung zweier Kammern zur Aufnahme von Substanzen und einer von den Kammern getrennten Tasche zur Entnahme der Mischung der beiden Substanzen miteinander verbunden sind, wobei die Trennung zwischen einer Kammer und der Tasche einen selektiv zu öffnenden Durchgangsbereich aufweist. Zum Aktivieren der Vorrichtung wird zunächst Druck auf die eine Kammer ausgeübt, wodurch die darin befindliche Substanz über den Durchgangsbereich in die zweite Kammer überführt wird. Hierdurch baut sich in der zweiten Kammer ein Überdruck auf, der zu einer Auswölbung einer der die Kammern bildenden Folien führt. Um zu verhindern, dass es zu einem Zurückströmen der Mischung in die erste Kammer kommt, ist es erforderlich, dass die Vorrichtung im Bereich zwischen den beiden Kammern geknickt wird. Hierbei sind Bedienungsfehler nicht ausgeschlossen.EP 0 895 943 A discloses a device for storing and applying a flowable substance, comprising a container made of two films which are joined together to form two chambers for holding substances and a pocket separate from the chambers for removing the mixture of the two substances are, wherein the separation between a chamber and the pocket has a selectively openable passage area. To activate the device, pressure is first exerted on the one chamber, whereby the substance contained therein via the passage area is transferred to the second chamber. As a result, an overpressure builds up in the second chamber, which leads to a bulge of one of the chambers forming the chambers. In order to prevent the mixture from flowing back into the first chamber, it is necessary for the device to be bent in the area between the two chambers. Here, operating errors are not excluded.

Nachteilig an den aus dem Stand der Technik bekannten Vorrichtungen ist somit, dass sie sich nur bedingt zum Ausbringen von homogenen Zusammensetzungen eignen, die durch Mischen zweier in der Vorrichtung getrennt gelagerter Substanzen erhalten werden können, Insbesondere bei Zusammensetzungen, deren Einzelbestandteile in unterschiedlichen Volumina oder Aggregatszuständen vorliegen, kann ein homogenes und reproduzierbares Mischergebnis häufig nicht gewährleistet werden.A disadvantage of the devices known from the prior art is therefore that they are only conditionally suitable for dispensing homogeneous compositions which can be obtained by mixing two substances stored separately in the device, in particular in the case of compositions whose individual constituents are in different volumes or aggregate states present, a homogeneous and reproducible mixing result can often not be guaranteed.

Die primäre Aufgabe der vorliegenden Erfindung besteht darin, eine verbesserte Vorrichtung zum Lagern und Ausbringen von Mischungen zur Verfügung zu stellen.The primary object of the present invention is to provide an improved apparatus for storing and dispensing mixtures.

Eine weitere Aufgabe kann darin gesehen werden, eine Vorrichtung bereitzustellen, die das Lagern und Ausbringen auch größerer Substanzmengen ermöglicht, ohne dass das Mischergebnis beeinträchtigt wird.Another object can be seen to provide a device that allows the storage and deployment of larger amounts of substance without the mixing result is impaired.

Eine weitere Aufgabe kann darin gesehen werden, eine Mehrkammer-Vorrichtung bereitzustellen, die ein Rückströmen der auszubringenden Mischung in eine der Kammern der Vorrichtung beim Ausbringen weitgehend verhindert.A further object can be seen to provide a multi-chamber device which largely prevents backflow of the mixture to be delivered into one of the chambers of the device when dispensing.

Diese Aufgaben werden gelöst durch Bereitstellung einer Vorrichtung wie sie in den Ansprüchen beschrieben ist.These objects are achieved by providing a device as described in the claims.

Mit den Begriffen "umfassen" oder "enthalten" wird eine nicht abschließende Aufzählung von Merkmalen eingeleitet. Der Umstand, dass in den Ansprüchen das Wort "ein" vor Nennung eines Merkmals verwendet wird, schließt nicht aus, dass die genannten Merkmale mehrmals vorhanden sein können, im Sinne von "mindestens ein".The terms "include" or "include" embody a non-exhaustive list of features. The fact that in the claims the word "a" is used before mentioning a feature does not exclude that said features may be present several times, in the sense of "at least one".

Die Vorrichtung ermöglicht das Lagern, Mischen und Ausbringen von fließfähigen Zusammensetzungen, deren Einzelbestandteile vor dem Mischen in der Vorrichtung getrennt voneinander gelagert werden können. Die Vorrichtung wird dadurch aktiviert, dass auf die erste Kammer Druck ausgeübt wird wodurch die sich in dieser Kammer befindende Substanz über den selektiv zu öffnenden Durchgangsbereich in die zweite Kammer überführt wird. Der selektiv zu öffnende Durchgangsbereich stellt somit gleichsam eine Art Sollbruchstelle dar.The apparatus enables storage, mixing and dispensing of flowable compositions, the individual ingredients of which may be stored separately prior to mixing in the apparatus. The device will characterized in that pressure is applied to the first chamber whereby the substance located in this chamber is transferred via the selectively openable passage area in the second chamber. The passage area to be selectively opened thus represents, as it were, a type of predetermined breaking point.

In der zweiten Kammer, in der sich eine zweite Substanz befindet, erfolgt das Mischen der beiden Substanzen.In the second chamber, in which there is a second substance, the mixing of the two substances takes place.

Falls die zweite Kammer volumenbedingt wie in der Vorrichtung gemäß EP 0 895 943 A die erste Substanz nicht oder nur unter erschwerten Bedingungen vollständig aufnehmen kann, kann nur ein Teil der ersten Substanz mit der zweiten Substanz gemischt werden. Dies ist nachteilig, da insbesondere im medizinischen Bereich ein reproduzierbares Mischergebnis erforderlich ist. Mischungen mit Konzentrationsabweichungen einzelner Bestandteile sind in vielen Fällen unbrauchbar.If, owing to the volume, the second chamber, as in the device according to EP 0 895 943 A, can not completely absorb the first substance or only under difficult conditions, only part of the first substance can be mixed with the second substance. This is disadvantageous, since a reproducible mixing result is required, in particular in the medical field. Mixtures with concentration deviations of individual components are useless in many cases.

Die vorliegende in Anspruch 1 bezeichnete Erfindung löst dieses Problem, da erfindungsgemäß die zweite Kammer derart beschaffen ist, dass sie neben einer ersten Substanz auch eine zweite Substanz aufnehmen kann, wobei beide Substanzen in der Vorrichtung gemischt werden können, ohne, dass die Vorrichtung vorher geöffnet werden muss, dies aber nach dem Mischen problemlos möglich ist.The present invention defined in claim 1 solves this problem, since according to the invention, the second chamber is such that it can accommodate a first substance in addition to a second substance, both substances can be mixed in the device, without that the device previously opened must be, but this is easily possible after mixing.

Dies wird dadurch gewährleistet, dass sich das Volumen der zweiten Kammer dauerhaft vergrößern lässt.This is ensured by the fact that the volume of the second chamber can be permanently increased.

Zu diesem Zweck ist die mindestens eine der die Kammern der Vorrichtung bildenden Folien zumindest im Bereich der zweiten Kammer vorgeformt bzw. plastisch formbar.For this purpose, the at least one of the chambers forming the chambers of the device is preformed or plastically moldable at least in the region of the second chamber.

Die erfindungsgemäße Vorrichtung ermöglicht es auch, die Aktivierung der Vorrichtung durch Ausüben von Druck auf die erste Kammer insbesondere optisch zu verfolgen. Die Überführung der ersten Substanz aus der ersten Kammer in die zweite Kammer bewirkt eine dauerhafte Volumenvergrößerung der zweiten Kammer, die von außen während der Anwendung detektiert werden kann.The device according to the invention also makes it possible to follow the activation of the device in particular optically by exerting pressure on the first chamber. The transfer of the first substance from the first chamber into the second chamber causes a permanent increase in volume of the second chamber, which can be detected from the outside during the application.

Unter dem Begriff "vorgeformt" im Sinne der Erfindung ist eine plastische, definierte Verformung bzw. Vor-Formung einer Folie zu verstehen, wobei die Folie kontrolliert und gezielt aus dieser Form in eine andere Form überführt werden kann. Dies schließt Vor-Formungen sowohl durch peelbares Versiegeln mit einer anderen Folie als auch siegelfreie Bereiche mit ein. Eine Vor-Formung lässt sich beispielsweise durch Tiefziehen einer Folie mittels Tiefziehwerkzeugen erreichen.The term "preformed" in the sense of the invention is understood to mean a plastic, defined deformation or preforming of a film, wherein the film can be controlled and specifically transferred from this mold into another form. This includes pre-forming by both peelable sealing with a different foil as well as seal-free areas. Preforming can be achieved, for example, by deep drawing a film by means of deep drawing tools.

Folien im Sinne der Erfindung sind dann formbar, insbesondere plastisch formbar, wenn sie bei Einwirken einer äußeren Kraft (beispielsweise durch einen beim Aktivieren der Vorrichtung sich aufbauenden Innendruck in einer Kammer) dieser Kraft unter Verformung nachgeben, beispielsweise durch dauerhafte Dehnung. Geeignete durch die Aktivierung der Vorrichtung formbare Folien weisen vorzugsweise keine nennenswerte Elastizität auf und haben somit kein nennenswertes Rückstellvermögen.Foils in the sense of the invention are then malleable, in particular plastically moldable, when they yield under deformation upon application of an external force (for example, by an internal pressure in a chamber building up when the device is activated), for example by permanent stretching. Suitable films which can be formed by activating the device preferably have no appreciable elasticity and thus have no appreciable resilience.

Eine Folie ist im Sinne der Erfindung dann dehnbar, wenn sie sich durch den beim Aktivieren der Vorrichtung aufbauenden Innendruck dauerhaft dehnen bzw. verformen lässt.A film is then stretchable in the sense of the invention if it can be permanently stretched or deformed by the internal pressure building up when the device is activated.

Da sich das Volumen der zweiten Kammer erst "bei Bedarf" durch Aktivierung der Vorrichtung vergrößert, ermöglicht die Erfindung ein minimales Packvolumen für die zu lagernden und zu mischenden Substanzen.Since the volume of the second chamber only increases "as needed" by activation of the device, the invention enables a minimum packing volume for the substances to be stored and mixed.

Ferner können die Substanzen in die Kammern der Vorrichtung nahezu ohne Einschluss von Luftsauerstoff bzw: anderen Gasen im Totvolumen gefüllt werden, da das für das Mischen erforderliche zusätzliche Volumen in der zweiten Kammer automatisch mit dem Überführen der ersten Substanz von der ersten in die zweite Kammer bereitgestellt wird.Furthermore, the substances can be filled into the chambers of the device almost without the inclusion of atmospheric oxygen or other gases in the dead volume, since the required for mixing additional volume in the second chamber automatically provided with the transfer of the first substance from the first to the second chamber becomes.

Das Erzeugen eines komprimierten Gaspolsters (Luftfeder) in der zweiten Kammer durch das Überführen der ersten Substanz von der ersten in die zweite Kammer, welches eine der Substanzen wieder in die erste Kammer zurückdrängen würde, wird somit weitestgehend verhindert.The generation of a compressed gas cushion (air spring) in the second chamber by the transfer of the first substance from the first to the second chamber, which would force one of the substances back into the first chamber, is thus largely prevented.

Ein ähnlicher Effekt lässt sich - allerdings mit hohem technischen Aufwand - durch das Befüllen der Vorrichtung unter Vakuum erreichen. Hierbei wird bei der Abfüllung das nicht durch die Substanz befüllte Volumen (Totvolumen) durch ein Vakuum ersetzt, welches nach dem Versiegeln der Vorrichtung und anschließendem Aussetzen der Vorrichtung dem atmosphärischen Druck zu entsprechendem Schrumpf der unter Vakuum stehenden Volumenbereiche führt. Durch Kombination beider Möglichkeiten kann das Totvolumen nahezu vollständig reduziert werden.A similar effect can be achieved - but with great technical effort - by filling the device under vacuum. In this case, during filling, the volume not filled by the substance (dead volume) is replaced by a vacuum, which, after sealing the device and then exposing the device to atmospheric pressure, causes corresponding shrinkage of the volume regions under vacuum leads. By combining both possibilities, the dead volume can be almost completely reduced.

Die Vorrichtung eignet sich insbesondere zum Lagern, Mischen und Ausbringen von Substanzen, die in unterschiedlichen Volumina in der Vorrichtung vorliegen.The device is particularly suitable for storing, mixing and dispensing substances that are present in different volumes in the device.

Um sicherzustellen, dass die Substanz mit dem kleineren Volumen im wesentlichen vollständig am Mischvorgang teilnimmt und Fehldosierungen beim Mischen verhindert werden, ist es zweckmäßig diese in der zweiten Kammer zu lagern und das Mischen in dieser Kammer durchzuführen. Die Substanz mit dem größeren Volumen wird diesbezüglich zweckmäßigerweise in der ersten Kammer gelagert. Mit Überführen der Substanz mit dem größeren Volumen aus der ersten Kammer in die zweite Kammer ist auf diese Weise ein vom Benutzer nahezu unabhängiges, reproduzierbares Mischergebnis sichergestellt.To ensure that the smaller volume substance substantially fully participates in the mixing process and prevents misdosing during mixing, it is convenient to store it in the second chamber and to perform mixing in that chamber. The substance with the larger volume is expediently stored in the first chamber in this regard. By transferring the substance with the larger volume from the first chamber into the second chamber, a user-independent, reproducible mixing result is ensured in this way.

Durch Knicken der Vorrichtung im Bereich zwischen den Kammern lässt sich der oder die selektiv zu öffnenden Durchgangsbereiche bei Bedarf wieder verschließen. Ein Zurückfließen der gemischten Substanzen in die andere Kammer ist dann nahezu unmöglich, so dass sich die gemischten Substanzen durch Druckeinwirkung auf den Außenbereich der die zweite Kammer bildenden Folien in den Ausbringbereich überführen lassen.By bending the device in the area between the chambers, the passage area or areas to be selectively opened can be closed again if necessary. Backflow of the mixed substances into the other chamber is then virtually impossible, so that the mixed substances can be transferred into the discharge region by pressure action on the outer region of the films forming the second chamber.

Das Volumen der ersten Kammer liegt üblicherweise im Bereich von 0,01 bis 100 ml, vorzugsweise im Bereich von 0,05 bis 50 ml.The volume of the first chamber is usually in the range of 0.01 to 100 ml, preferably in the range of 0.05 to 50 ml.

Das Volumen der zweiten Kammer ist vorzugsweise kleiner als oder gleich groß wie das Volumen der ersten Kammer, zumindest vor dem Aktivieren der Vorrichtung, und liegt im Bereich von 0,001 bis 100 ml, vorzugsweise im Bereich von 0,01 bis 25 ml.The volume of the second chamber is preferably less than or equal to the volume of the first chamber, at least prior to activating the device, and is in the range of 0.001 to 100 ml, preferably in the range of 0.01 to 25 ml.

Eine Kammer weist beispielsweise einen Durchmesser von 1 bis 100 mm, vorzugsweise im Bereich von 5 bis 50 mm auf.. Das applizierbare Gesamtvolumen liegt üblicherweise im Bereich von 0,011 bis 200 ml, bevorzugt im Bereich von 0,06 bis 75 ml.A chamber has for example a diameter of 1 to 100 mm, preferably in the range of 5 to 50 mm. The total volume administered is usually in the range of 0.011 to 200 ml, preferably in the range of 0.06 to 75 ml.

Um die erfindungswesentliche Volumenvergrößerung der zweiten Kammer zu erreichen, sind unterschiedliche Ausführungsformen denkbar.In order to achieve the volume increase of the second chamber essential to the invention, different embodiments are conceivable.

Die Volumenvergrößerung lässt sich beispielsweise durch eine im wesentlichen konkave Ausbildung der Basisfolie und im wesentlichen konvexe Ausbildung der Deckfolie erreichen (aus Sicht des in die Kammer abgefüllten Produkts). Die Deckfolie wird hierzu im Bereich der zweiten Kammer ebenfalls etwas tiefgezogen und derart mit der zweiten Folie verbunden, dass sich der tiefgezogene Bereich mit Aktivierung der Vornchtung nach außen wölben kann.The increase in volume can be achieved, for example, by a substantially concave formation of the base film and a substantially convex formation of the cover film (from the point of view of the product filled into the chamber). For this purpose, the cover film is also somewhat deep-drawn in the region of the second chamber and connected to the second film in such a way that the deep-drawn region can bulge outwardly upon activation of the device.

Um den Widerstand, den die tiefgezogene Folie beim Nach-Außen-Wölben dem sich in der Kammer aufbauenden Druck entgegensetzt, zu emiedrigen und um einen maximalen Volumenzuwachs sicherzustellen, hat sich folgendes Herstellungsverfahren als vorteilhaft erwiesen:In order to reduce the resistance that the deep-drawn film, in the case of outward-facing buckling, opposes to the pressure building up in the chamber, and to ensure a maximum increase in volume, the following production method has proved advantageous:

Die Deckfolie wird zunächst tiefgezogen und anschließend umgestülpt, so dass sich die Delle in der Folie auf der dem Tiefzieh-Werkzeug entgegengesetzten Seite befindet. Die beim Tiefziehen in der Folie aufgetretenen Materialverschiebungen und die damit verbundene Spannung bleiben zumindest teilweise beim Umstülpen erhalten, so dass sich die Folie gleichsam in einem quasi vorgespannten Zustand befindet und sich beim Aktivieren somit leichter nach außen umstülpen lässt. Die so gefertigte Deckfolie wird schließlich auf die ebenfalls tiefgezogenen Basisfolie aufgesiegelt. Die umgestülpte Delle in der Deckfolie sowie die Delle in der Basisfolie zeigen dabei in die gleiche Richtung und bilden zwischen sich das Volumen der zweiten Kammer im Lagerzustand.The cover sheet is first deep-drawn and then everted so that the dent in the film is on the side opposite the thermoforming tool. The material displacements that have occurred during deep drawing in the film and the tension associated therewith remain at least partially preserved during everting, so that the film as it were is in a quasi-preloaded state and can thus be turned inside out more easily when activated. The cover film thus produced is finally sealed onto the likewise deep-drawn base film. The inverted dent in the cover sheet and the dent in the base film show in the same direction and form between them the volume of the second chamber in the storage condition.

Die Beschreibung der Form einer Folie als "konkav" oder "konvex" schließt allerdings nicht aus, dass die Folie insbesondere in Randbereichen ihr Krümmungsverhalten ändert.The description of the shape of a film as "concave" or "convex", however, does not rule out that the film changes its curvature behavior, especially in peripheral areas.

Denkbar ist auch, nur die Basisfolie tief zu ziehen und zwar in einer Form, die ein Auswölben der Folie bei Aktivierung der Vorrichtung ermöglicht. Eine solche Form lässt sich beispielsweise dadurch erreichen, dass die zunächst konvex nach außen gewölbte Basisfolie zumindest partiell wieder eingedrückt wird. Diese Form lässt sich aber auch in einem einzigen Schritt durch Bereitstellen eines entsprechenden Formwerkzeuges erzielen. Man erhält somit eine Folie, die im Querschnitt mehr oder weniger wellenförmig verformt ist.It is also conceivable to pull only the base film deep and indeed in a form that allows bulging of the film upon activation of the device. Such a shape can be achieved, for example, in that the initially convexly curved outward base film is at least partially pressed again. However, this shape can also be achieved in a single step by providing a corresponding molding tool. This gives a film which is deformed more or less wavy in cross section.

In einer Variante zu dieser Ausführungsform weist die Basisfolie im Querschnitt betrachtet mehrere Wellenberge und Wellentäler auf, wobei die Folie im Bereich eines Wellentals mit der Deckfolie peelbar versiegelt sein kann, so dass die Kammer in mehrere Kompartimente unterteilt wird.In a variant of this embodiment, the base film seen in cross-section on several wave crests and wave troughs, wherein the film in the Area of a wave trough can be peelbar sealed with the cover sheet, so that the chamber is divided into several compartments.

Die Vorrichtung eignet sich somit gegebenenfalls auch zur Lagerung und zum Mischen von mehr als zwei Substanzen. Die zweckmäßigerweise im Zentrum der zweiten Kammer peelbar eingesiegelte zweite Substanz wird bei Aktivierung der Vorrichtung durch die aus der ersten Kammer in die zweite Kammer überführte erste Substanz zunächst ohne unmittelbare Berührung rinnenförmig umgeben. Mit zunehmendem Druck auf die erste Kammer und Überführung einer größer werdenden Menge an zweiter Substanz beginnt sich die Siegelnaht im Bereich des Wellentals zu lösen, wodurch die erste Substanz beginnt die zweite Substanz zu benetzen.The device is therefore also suitable for storing and mixing more than two substances. The second substance, which is expediently peelably sealed in the center of the second chamber, is initially surrounded by a groove-like shape when the device is activated by the first substance transferred from the first chamber into the second chamber without direct contact. With increasing pressure on the first chamber and transfer of an increasing amount of second substance, the seal begins to dissolve in the region of the wave trough, whereby the first substance begins to wet the second substance.

Eine weitere Möglichkeit besteht darin, die zweite Kammer in einem Randbereich peelbar zu versiegeln oder die beiden die Kammer bildenden Folien in diesem Bereich flachliegend aufeinander zu drücken ohne sie in diesem Bereich peelbar zu versiegeln. An diesen Randbereich schließt sich ein nicht peelbarer Siegelbereich an, der letztlich und vor allem beim Aktivieren der Vorrichtung die Kammer nach außen abdichtet. Dieser nicht peelbare (fest versiegelte) Siegelbereich ist nur jeweils durch einen peelbaren Durchgangsbereich an der Stelle unterbrochen, an der die zweite Kammer in den Ausbringbereich mündet bzw. die Verbindung zwischen erster und zweiter Kammer hergestellt werden soll. Die Volumenvergrößerung der zweiten Kammer erfolgt bei Aktivierung der Vorrichtung dadurch, dass sich die Deckfolie von der Basisfolie in diesem Bereich ablösen lässt bzw. abhebt.Another possibility is to peelably seal the second chamber in an edge region or to press the two films forming the chamber in this area lying flat on each other without peelably sealing them in this region. A non-peelable sealing area adjoins this edge region, which ultimately and especially when activating the device seals the chamber to the outside. This non-peelable (firmly sealed) sealing area is only interrupted in each case by a peelable passage area at the point at which the second chamber opens into the dispensing area or the connection between the first and second chamber is to be established. The increase in volume of the second chamber takes place upon activation of the device in that the cover sheet can be detached from the base film in this area or lifted off.

Es wurde gefunden, dass peelbar versiegelte oder unversiegelte Randbereiche nach der durch Aktivierung der Vorrichtung eintretenden Volumenvergrößerung gegebenenfalls eine stärkere Neigung zur Rückstellung aufweisen als Folien, die beim Aktivieren von einer konvexen Form in eine konkave Form überführt werden.It has been found that peelably sealed or unsealed edge areas, after the increase in volume due to activation of the device, may be more prone to recovery than films converted from a convex shape to a concave shape upon activation.

Eine Volumenvergroßerung der zweiten Kammer lässt sich beispielsweise auch dadurch erreichen, dass mindestens eine der die zweite Kammer bildenden Folien verformbar bzw. dehnbar, insbesondere plastisch verformbar ist. Beim Überführen der ersten Substanz in die zweite Kammer erfolgt in diesem Fall die Volumenvergrößerung dadurch, dass sich die plastisch verformbare Folie dehnen lässt, vorzugsweise ohne nennenswertes Rückstellvermögen.An increase in volume of the second chamber can also be achieved, for example, by virtue of the fact that at least one of the films forming the second chamber is deformable or expandable, in particular plastically deformable. When transferring the first substance in the second chamber takes place in this case the Volume increase in that the plastically deformable film can stretch, preferably without significant recovery.

Die oben genannten Möglichkeiten lassen sich selbstverständlich auch untereinander kombinieren.Of course, the above options can also be combined with each other.

Die Breite des peelbar versiegelten Randbereichs ist grundsätzlich beliebig und abhängig von der gewünschten Volumenvergrößerung, Eine Breite im Bereich von 0,1 bis 40 mm, vorzugsweise von 0,5 bis 20 mm hat sich bewährt.The width of the peelbar sealed edge region is basically arbitrary and depending on the desired increase in volume, a width in the range of 0.1 to 40 mm, preferably from 0.5 to 20 mm has been proven.

Die selektiv zu öffnenden Bereiche bzw. die peelbar versiegelten Bereiche öffnen sich vorzugsweise dann, wenn durch eine fließfähige Substanz ein hydrostatischer Druck im Bereich von 3 bis 300 N/cm2, besonders bevorzugt im Bereich von 15 bis 150 N/cm2, auf diesen Bereich ausgeübt wird. Der zum Öffnen der selektiv zu öffnenden Bereiche aufzuwendende Druck kann je nach Ausführungsform für jeden selektiv zu öffnenden Bereich unterschiedlich sein. Dies ermöglicht ein gerichtetes Überführen der zu mischenden Substanzen in die jeweiligen Kammern bis hin zum Ausbringbereich.The selectively openable regions or the peelably sealed regions preferably open when a hydrostatic pressure in the range from 3 to 300 N / cm 2 , particularly preferably in the range from 15 to 150 N / cm 2 , is applied to them by a flowable substance Area is exercised. Depending on the embodiment, the pressure to be used for opening the selectively openable regions may vary for each selectively openable region. This allows a directed transfer of the substances to be mixed in the respective chambers up to the application area.

Je nach Ausführungsform und verwendeten Folien kann es beim Aktivieren der Vorrichtung zu leichten Geometrieänderungen der Vorrichtung, insbesondere im Bereich der zweiten Kammer, kommen. Gegebenenfalls wölbt sich eine der die Kammer bildenden Folien mit zunehmendem Druckaufbau etwas nach außen.Depending on the embodiment and the films used, slight changes in the geometry of the device, in particular in the region of the second chamber, may occur when the device is activated. Optionally, one of the films forming the chamber bulges slightly with increasing pressure build-up to the outside.

Vorzugsweise ist auch die zweite Kammer über einen selektiv zu öffnenden Durchgangsbereich mit dem Ausbringbereich verbunden. Dies ermöglicht eine einfachere Handhabung. Die gemischte Zusammensetzung lässt sich in diesem Fall durch Ausübung von Druck auf die zweite Kammer ausbringen, ohne dass zur Öffnung der Vorrichtung weitere Hilfsmittel nötig sind. Zweckmäßigerweise wird beim Ausbringen der fließfähigen Zusammensetzung der Durchgangsbereich zur ersten Kammer durch Umknicken verschlossen.Preferably, the second chamber is connected via a selectively openable passage area with the discharge area. This allows easier handling. In this case, the mixed composition can be applied to the second chamber by exerting pressure, without the need for additional devices to open the device. Conveniently, when the flowable composition is applied, the passage region to the first chamber is closed by folding over.

Unter Ausbringbereich im Sinne der Erfindung ist dabei der Bereich der Vorrichtung zu verstehen, über den eine Entleerung der gemischten Zusammensetzung erfolgt.The term "application area" in the sense of the invention means the area of the device via which the mixed composition is emptied.

Vorzugsweise ist der Ausbringbereich derart gestaltet, dass ein sicheres, gleichmäßiges Ausbringen gewährleistet werden kann.Preferably, the dispensing area is designed such that a secure, uniform spreading can be ensured.

Diesbezüglich hat sich das Einbringen von Strömungsbarrieren wie sie in der DE 19 962 436 A beschrieben sind, bewährt. Derartige Barrieren stellen sicher, dass die Zusammensetzung beim Ausbringen nicht verspritzt.In this regard, the introduction of flow barriers as described in DE 19 962 436 A, has proven. Such barriers ensure that the composition does not spill when dispensed.

Durch Einbringen von Strömungsbarrieren in den Ausbringbereich wird die Substanz beim Ausströmen durch den Ausbringbereich derart beeinflusst, dass ein langsames Austreten aus dem Ausbringbereich an dessen Mündung gewährleistet wird. Damit wird auch ein Verspritzen der Substanz durch Ausüben von hohem Druck auf die zweite Kammer bei plötzlichem Öffnen des Durchgangsbereichs verhindert. Die Erhöhung des Strömungswiderstandes und damit die Behinderung am Ausströmen der Substanz kann durch eine Verlängerung, gegebenenfalls unter Richtungsänderung, des Fließweges um die Barrieren bzw. durch die Reduktion des Strömungsquerschnitts durch versetzt angeordnete Siegelpunkte bzw. Siegelstege erreicht werden.By introducing flow barriers into the dispensing area, the substance is influenced during the outflow through the dispensing area in such a way that a slow exit from the dispensing area at its mouth is ensured. This also prevents splashing of the substance by exerting high pressure on the second chamber upon sudden opening of the passage area. The increase of the flow resistance and thus the obstruction of the outflow of the substance can be achieved by an extension, optionally with change of direction, of the flow path around the barriers or by the reduction of the flow cross-section through staggered sealing points or sealing webs.

Weiterhin kann eine Erhöhung des Strömungswiderstands durch eine geradlinige Verengung des Strömungsquerschnitts im Ausbringbereich erreicht werden. Hierbei ist eine Verengung um den Faktor 1,5 bis 5, vorzugsweise um den Faktor 2, vorgesehen. Eine derartige Vorrichtung ist insbesondere dann geeignet, wenn niedrigviskose Substanzen ohne weitere Hilfsmittel zielgerichtet, einfach und ohne Verschütten ausgebracht werden sollen.Furthermore, an increase in the flow resistance can be achieved by a rectilinear narrowing of the flow cross section in the discharge region. Here, a narrowing by a factor of 1.5 to 5, preferably by a factor of 2, provided. Such a device is particularly suitable when low-viscosity substances without further aids purposeful, easy and without spillage should be applied.

Ferner kann die Vorrichtung einen Ausbringbereich aufweisen, der geometrisch so zum Durchgangsbereich angeordnet ist, dass die Längsachse des Ausbringbereichs nicht durch den Durchgangsbereich verläuft. Dabei kann der Ausbringbereich insbesondere in dem an den Durchgangsbereich angrenzenden Teil, ein vergrößertes Volumen aufweisen. Besonders bevorzugt ist es, wenn der Ausbringbereich als Tasche ausgebildet ist. Bei dieser Anordnung ist es von Vorteil, dass bei einer plötzlichen Öffnung des Durchgangsbereichs durch Druck auf die in der Kammer befindliche Substanz, die Substanz in den Ausbringbereich gefördert wird. Dort erfährt die Substanz durch die Anordnung der Längsachse des Ausbringbereichs, die den Durchgangsbereich nicht schneidet, eine Richtungsänderung der Ausströmrichtung. Aufgrund dieser Richtungsänderung ist ein langsames Austreten aus dem Ausbringbereich an dessen Mündung gewährleistet. Wenn der Ausbringbereich als Tasche ausgebildet ist, wird die plötzlich ausströmende Substanz in dieser Tasche zunächst aufgefangen. Aus dieser Tasche ist dann ein langsames und gezieltes Ausbringen möglich.Furthermore, the device may have a dispensing area which is arranged geometrically to the passage area such that the longitudinal axis of the dispensing area does not extend through the passage area. In this case, the dispensing area can have an enlarged volume, in particular in the part adjacent to the passage area. It is particularly preferred if the dispensing area is designed as a pocket. With this arrangement, it is advantageous that in a sudden opening of the passage area by pressure on the substance located in the chamber, the substance is conveyed into the dispensing area. There, the substance undergoes a change in direction of the outflow direction due to the arrangement of the longitudinal axis of the dispensing area, which does not intersect the passage area. Due to this change in direction, a slow exit from the dispensing area at its mouth is ensured. If the dispensing area is designed as a pocket, the suddenly outflowing substance in this pocket first collected. From this bag then a slow and targeted deployment is possible.

Um zu verhindern, dass die sich nach dem Aktivieren der Vorrichtung in der zweiten Kammer befindenden Substanzen in die erste Kammer zurückfließen, kann es auch vorteilhaft sein, in den Durchgangsbereich zwischen den beiden Kammern ein Ventil einzubauen.In order to prevent the substances located in the second chamber after activation of the device from flowing back into the first chamber, it may also be advantageous to install a valve in the passage area between the two chambers.

Ein geeignetes Ventil stellt beispielsweise eine flexible Folie (nachstehend Ventilfolie genannt) dar, die im Durchgangsbereich zwischen den beiden Kammern beispielsweise an der Basisfolie befestigt ist und in die zweite Kammer hineinragt. Die erste Substanz lässt sich, wie bereits beschrieben, von der ersten Kammer in die zweite Kammer überführen. Sobald die erste Substanz vollständig in die zweite Kammer durch den nun geöffneten Durchgangsbereich überführt ist, verhindert die Ventilfolie das Zurückströmen der sich in der zweiten Kammer befindenden Substanzen, indem sie den Durchgangsbereich blockiert.A suitable valve is, for example, a flexible film (hereinafter referred to as valve film), which is fastened in the passage region between the two chambers, for example on the base film and projects into the second chamber. As already described, the first substance can be transferred from the first chamber into the second chamber. As soon as the first substance has been completely transferred into the second chamber through the passage area which has now been opened, the valve foil prevents the substances located in the second chamber from flowing back, blocking the passage area.

Diese Ausführungsform bringt u.a. den Vorteil mit, dass die Vorrichtung im Durchgangsbereich zwischen den beiden Kammern nach Aktivierung nicht geknickt zu werden braucht, um auszuschließen, dass Substanz in die erste Kammer zurückfließt. Bei dieser Ausführungsform ist es auch nicht erforderlich, dass die die zweite Kammer bildenden Folien plastisch verformbar sind.This embodiment brings u.a. the advantage that the device in the passage area between the two chambers need not be kinked after activation in order to exclude that substance flows back into the first chamber. In this embodiment, it is also not necessary that the films forming the second chamber are plastically deformable.

Aus Fertigungsgründen kann es vorteilhaft sein, wenn die Ventilfolie zusätzlich die erste Kammer ganz oder teilweise auskleidet und gegebenenfalls bis in den fest versiegelten Randbereich der ersten Kammer reicht. Dabei kann es ausreichend sein, wenn die Ventilfolie nur im Durchgangsbereich an ihrer Oberseite an der Basisfolie haftet.For manufacturing reasons, it may be advantageous if the valve film additionally completely or partially lines the first chamber and optionally extends into the firmly sealed edge region of the first chamber. It may be sufficient if the valve film adheres to the base film only in the passage area at its top.

Der selektiv zu öffnende Durchgangsbereich in Kombination mit der Ventilfolie lässt sich beispielsweise auch auf folgende Weise verwirklichen: Die Ventilfolie wird beispielsweise mit der Deckfolie im Bereich der ersten und zweiten Kammer sowie im Durchgangsbereich verbunden. Die Ventilfolie weist im Bereich der ersten Kammer in der Nähe des selektiv zu öffnenden Durchgangsbereichs zur zweiten Kammer eine Öffnung auf, die beispielsweise aus der Ventilfolie herausgestanzt wurde. Die Ventilfolie weist ferner im Bereich der zweiten Kammer eine Lasche oder Zunge auf, die sich beispielsweise durch Stanzen oder Ausschneiden einer entsprechenden Form aus der Ventilfolie bilden lässt. Der im Bereich der Lasche abgetrennte Restbereich der Ventilfolie wird dabei nicht entfernt, sondern verbleibt im Bereich der zweiten Kammer. Die Ventilfolie ist mit der Deckfolie vorzugsweise nur im Durchgangsbereich peelbar versiegelt. Beim Aktivieren der Vorrichtung wird die Substanz aus der ersten Kammer durch die Öffnung in der Ventilfolie über den selektiv zu öffnenden Durchgangsbereich in die zweite Kammer überführt, wobei sich die Lasche der Ventilfolie anhebt. Sobald im wesentlichen die gesamte Menge der ersten Substanz in die zweite Kammer, überführt wurde, wird durch den sich aufbauenden Innendruck in der zweiten Kammer und Druckentlastung der ersten Kammer die Lasche gegen die Deckfolie im Bereich der zweiten Kammer bzw. in die vorhandene Freistanzung gedrückt und verhindert auf diese Weise das Rückströmen der Substanz in die erste Kammer.The selectively openable passage area in combination with the valve film can also be realized, for example, in the following way: The valve film is connected, for example, to the cover film in the region of the first and second chambers and in the passage area. The valve film has an opening in the region of the first chamber in the vicinity of the selectively openable passage region to the second chamber, which has been punched out of the valve film, for example. The valve film also has in the region of second chamber on a tab or tongue, which can be formed for example by punching or cutting a corresponding shape of the valve film. The separated in the region of the flap residual region of the valve film is not removed, but remains in the region of the second chamber. The valve film is preferably peelably sealed to the cover film only in the passage region. Upon activation of the device, the substance is transferred from the first chamber through the opening in the valve foil via the selectively openable passageway area to the second chamber, with the tab of the valve foil lifting. As soon as substantially the entire amount of the first substance has been transferred to the second chamber, the tab is pressed against the cover sheet in the region of the second chamber or in the existing free-punching by the build-up internal pressure in the second chamber and pressure relief of the first chamber prevents in this way the backflow of the substance into the first chamber.

In einer weiteren Ausführungsform kann sich in dem selektiv zu öffnenden Durchgangsbereich zwischen der ersten Kammer und der zweiten Kammer eine dritte Kammer befinden, die mit einer dritten Substanz befüllt ist. Beim Aktivieren der Vorrichtung wird in diesem Fall zunächst die dritte Kammer geöffnet und die aus der ersten Kammer austretende erste Substanz vereinigt sich mit der in der dritten Kammer befindlichen dritten Substanz bevor sie schließlich in die zweite Kammer eintritt, in der der eigentliche Mischvorgang stattfindet.In a further embodiment, in the selectively openable passage area between the first chamber and the second chamber may be a third chamber which is filled with a third substance. When activating the device, the third chamber is first opened in this case, and the first substance emerging from the first chamber merges with the third substance located in the third chamber before finally entering the second chamber, in which the actual mixing process takes place.

Diese Anordnung eignet sich besonders zur intensiven Mischung von gleichen oder unterschiedlichen Flüssigkeiten, die sich in der ersten und zweiten Kammer befinden mit beispielsweise einem Pulver, das sich in der dazwischen liegenden dritten Kammer befindet. Die dritte Kammer kann durch mehrmaliges, wechselseitiges Ausüben von Druck auf die erste bzw. zweite Kammer und die darin befindlichen Substanzen besonders intensiv durchspült werden. In diesem Fall ist ein sich in der ersten und/oder zweiten Kammer befindliches Volumenreservoir von Vorteil.This arrangement is particularly suitable for the intensive mixing of the same or different liquids, which are located in the first and second chamber with, for example, a powder, which is located in the intermediate third chamber. The third chamber can be particularly intensively flushed by repeated, mutual exerting pressure on the first and second chamber and the substances contained therein. In this case, a volume reservoir located in the first and / or second chamber is advantageous.

Bei der Vorrichtung handelt es sich üblicherweise um eine Einmalverpackung (unit-dose). Die Vorrichtung eignet sich zum Lagern und Ausbringen von allen Substanzen, bei denen eine reproduzierbare, vom Benutzer weitgehend unabhängige Mischung und Dosierung erforderlich ist.The device is usually a unit-dose. The device is suitable for storing and dispensing all Substances that require reproducible mixing and dosage that is largely independent of the user.

Insbesondere hat sich die Vorrichtung im human- und tiermedizinischen sowie im dentalen Bereich bewährt.In particular, the device has proven itself in human and veterinary medicine as well as in the dental field.

Bei den zu lagernden Substanzen handelt es sich üblicherweise um Flüssigkeiten, Pasten und/oder Festsstoffe. Die Feststoffe können dabei in Pulver-, Tabletten- oder Granulatform vorliegen.The substances to be stored are usually liquids, pastes and / or solids. The solids may be present in powder, tablet or granular form.

Vorzugsweise eignet sich die Vorrichtung zum Lagern, Mischen und Ausbringen von Zusammensetzungen, gewählt aus: menschlichen und tierischen Arzneimitteln, Mitteln zur Wundreinigung, Dentalprodukten, Klebstoffen, Abformmaterialien, Farben, insbesondere 2K-Farben, getrennt zu lagernden Lebensmitteln bzw. deren Bestandteile.The device is preferably suitable for storing, mixing and dispensing compositions selected from human and animal medicaments, wound cleansing agents, dental products, adhesives, impression materials, paints, in particular 2-component paints, foods to be stored separately or their constituents.

Die Vorrichtung umfasst im wesentlichen eine erste Basis- oder Unterfolie und eine zweite Deck- oder Oberfolie, die ihrerseits als Mehrschichtfolien - ausgebildet sein können.The device essentially comprises a first base or bottom foil and a second top or top foil, which in turn may be formed as multilayer foils.

Je nach Ausführungsform, die gewählt wird, um die erfindungswesentliche Volumenvergrößerung zu ermöglichen, ist mindestens eine der Folien plastisch verformbar, vorzugsweise unter Verformung tiefziehbar.Depending on the embodiment, which is selected in order to enable the volume increase essential to the invention, at least one of the films is plastically deformable, preferably thermoformable under deformation.

Als Folien werden vorzugsweise solche verwendet, die eine ausreichende Diffusionsdichtigkeit aufweisen.The films used are preferably those which have a sufficient diffusion tightness.

Je nach Beschaffenheit der zu lagemden Substanz sollten die Folien auch beständig gegen aggressive, beispielsweise ätzende und/oder Lösungsmitteleigenschaften aufweisende Stoffe sein.Depending on the nature of the substance to be stored, the films should also be resistant to aggressive substances, for example corrosive and / or solvent-containing substances.

Je nach Anwendungsbereich und gewünschter Verformbarkeit sind die Folien gereckt oder liegen vor dem Aktivieren der Vorrichtung im ungereckten Zustand vor.Depending on the field of application and the desired deformability, the films are stretched or are in the unstretched state before the device is activated.

Die Folienbestandteile können gewählt sein aus Kunststoff-, Metall- und keramischen Folien.The film components may be selected from plastic, metal and ceramic films.

Als Kunststofffolien sind beispielsweise denkbar: PE, PP, PTFE, PET, PA, PBT, PVC, EVA, PVF (Polyvinylfluorid).As plastic films are conceivable, for example: PE, PP, PTFE, PET, PA, PBT, PVC, EVA, PVF (polyvinyl fluoride).

Als Metallfolien sind beispielsweise denkbar: Al, Sn, Au, Ag, Fe, Pb.Possible metal foils are, for example: Al, Sn, Au, Ag, Fe, Pb.

Unter keramischen Folien sind Folien zu verstehen, die beispielsweise eine SiOx-haltige Schicht aufweisen.Ceramic films are to be understood as meaning films which have, for example, an SiO 2 -containing layer.

Der Folienaufbau ist grundsätzlich beliebig und orientiert sich u.a. an der Beschaffenheit der zu lagernden Substanzen.The film structure is basically arbitrary and is oriented i.a. on the nature of the substances to be stored.

Als vorteilhaft hat sich ein Folienaufbau mit der Abfolge von außen nach innen PET, AI, PET, PE oder PP, AI, PET, PE, gegebenenfalls auch ohne PET-Folie als Mittelfolie, erwiesen.A film structure with the sequence from the outside to the inside has proved to be advantageous PET, Al, PET, PE or PP, Al, PET, PE, if appropriate also without PET film as center film.

Die Folien sind mit Ausnahme der die Kammern bildenden Bereiche vorzugsweise flächig miteinander verbunden.The films are preferably connected to each other with the exception of the chambers forming areas.

Die Verbindung der ersten mit der zweiten Folie kann beispielsweise durch Heißsiegeln, Kaltsiegeln, Verkleben und/oder Ultraschallschweißen mit Sonotroden, erfolgen.The connection of the first with the second film can be done for example by heat sealing, cold sealing, gluing and / or ultrasonic welding with sonotrodes.

Ein Mehrschichtaufbau der ersten und zweiten Folie kann durch Laminieren, Kalandrieren, Kaschieren verschiedener Monofolienlagen gegebenenfalls auch durch Bedampfen, beispielsweise mit Metallen, erreicht werden.A multilayer structure of the first and second film can be achieved by laminating, calendering, laminating various monofilm layers, if appropriate also by vapor deposition, for example with metals.

Um die in die Vorrichtung eingebrachten, applizierbaren Substanzen beispielsweise vor Lichteinfall zu schützen, sind die Folien vorzugsweise derart gestaltet, dass sie in einem die Kammer umgebenden Bereich durch zwei in Abstand voneinander angeordnete Siegelnähte miteinander verbunden sind.In order to protect the administered substances introduced into the device, for example from light, the foils are preferably designed such that they are connected to one another in a region surrounding the chamber by two sealing seams arranged at a distance from one another.

Die Form der Vorrichtung ist grundsätzlich beliebig, vorzugsweise aber an die Beschaffenheit der gelagerten Substanzen angepasst.The shape of the device is basically arbitrary, but preferably adapted to the nature of the stored substances.

Die Kammern sind vorzugsweise rund (kreisrund oder oval) gegebenenfalls aber auch eckig (quadratisch, rechteckig oder dreieckig) ausgebildet.The chambers are preferably round (circular or oval) but optionally also square (square, rectangular or triangular).

Der Durchgangsbereich ist so beschaffen, dass er im Lagerzustand einen dichten Verschluss bildet, sowohl zwischen den beiden Kammern als auch zum Bereich, über den die Zusammensetzung ausgebracht werden soll.The passageway area is such that it forms a tight seal in the storage condition, both between the two chambers and to the area over which the composition is to be applied.

Der selektiv zu öffnende Durchgangsbereich bzw. die Sollbruchstelle lässt sich beispielsweise durch Kaltsiegeln, Heißsiegeln, Ultraschallschweißen oder Verkleben erreichen, wobei beim Heißsiegeln ein im Vergleich zu den anderen Siegelbereichen unterschiedlicher Energieeintrag, vorzugsweise niedrigerer Energieeintrag erfolgt. Dieser kann über Temperatur, Druck und/oder Haltedauer geregelt werden.The selectively openable passage area or the predetermined breaking point can be achieved, for example, by cold sealing, heat sealing, ultrasonic welding or gluing, wherein in heat sealing one in comparison to the other Seal areas of different energy input, preferably lower energy input takes place. This can be regulated by temperature, pressure and / or holding time.

Eine andere Möglichkeit besteht darin, im Bereich der Sollbruchstelle zwischen die erste und die zweite Folie die Haftung herabsetzende Fremdpartikel wie Peelfolienstanzlinge oder Hotmeltklebepunkte einzubringen. In diesem Fall werden als Ober- und Unterfolie vorzugsweise festversiegelnde Folien eingesetzt.Another possibility is to introduce in the region of the predetermined breaking point between the first and the second film adhesion-reducing foreign particles such as Peelfolienstienstlinge or Hotmeltklebepunkte. In this case, preferably used as top and bottom film verscheschiegelnde films.

Der Ausbringbereich ist vorzugsweise nach einer Seite hin offen, d.h. in taschenartig ausgebildet, und gegebenenfalls so ausgebildet, dass sich ein Ausbringinstrument bzw. ein Applikator auch im Lagerzustand einbringen lässt.The dispensing area is preferably open to one side, i. formed in pocket-like, and optionally designed so that a dispensing instrument or an applicator can also bring in the storage condition.

Der Ausbringbereich kann bei entsprechend kleinem Durchmesser der Öffnung nach außen hin, beispielsweise in Form einer Kanüle, auch selbst als Applikationsvorrichtung dienen.With a correspondingly small diameter of the opening towards the outside, for example in the form of a cannula, the dispensing area can also serve as an application device itself.

Die Trennung zwischen der oder den Kammern und dem Ausbringbereich ist bezüglich des Abstandes sowie bezüglich der Festigkeit der Haftung so gestaltet, dass eine weitere Sollbruchstelle vorliegt.The separation between the chamber or chambers and the dispensing area is designed with respect to the distance as well as with regard to the strength of the adhesion so that there is a further predetermined breaking point.

Das gegebenenfalls vorhandene Applikationsinstrument ist vorzugsweise pinsel- oder tupferartig gestaltet. Ein Applikationsinstrument mit einer kugelförmigen, Bürsten- oder Pinselhaare tragenden Spitze hat sich als günstig erwiesen. Ferner können Pipetten, Wattestäbchen, Schwämme, Spatel oder in den Ausbringbereich eingesiegelte Sprayköpfe als Applikationsinstrument bzw. -vorrichtungen verwendet werden.The optionally existing application instrument is preferably designed brush or swab-like. An application instrument with a spherical, brush or brush hair-bearing tip has proven to be beneficial. Further, pipettes, cotton swabs, sponges, spatulas or spray heads sealed in the dispensing area may be used as the application instrument or devices.

Ferner ist es bei Verwendung eines Applikationsinstrument günstig, wenn der Ausbringbereich durch das Applikationsinstrument nach außen hin weitgehend abgedichtet wird.Furthermore, when using an application instrument, it is favorable if the dispensing area is largely sealed to the outside by the application instrument.

Ein sich in dem Ausbringbereich befindendes oder erst zu diesem oder späteren Zeitpunkt eingebrachtes Ausbringinstrument wird beim Aktivieren der Vorrichtung benetzt und kann anschließend zur Applizierung der freigesetzten Substanz verwendet werden.A dispensing instrument located in the dispensing region or introduced only at this time or later is wetted when the device is activated and can then be used to apply the released substance.

Denkbar ist auch, dass das Applikationsinstrument in Richtung der zweiten Kammer bewegt wird, um den selektiv zu öffnenden Durchgangsbereich zu lösen. Hierdurch erfolgt ebenfalls eine Benetzung des Ausbringinstruments.It is also conceivable that the application instrument is moved in the direction of the second chamber in order to release the passage area to be selectively opened. This also wets the dispensing instrument.

Ist ein wiederholtes Applizieren der freigesetzten Substanz erforderlich, kann das Applikationsinstrument erneut in die Tasche eingeführt werden.If repeated application of the released substance is required, the application instrument can be reinserted into the pocket.

Vorzugsweise ist der Ausbringbereich oder das Applikationsinstrument so gestaltet, dass beim erneuten Einführen von diesem eine Benetzung des äußeren Abschnitts des Applikationsinstruments nicht stattfindet.Preferably, the application area or the application instrument is designed so that upon reinsertion of this wetting of the outer portion of the application instrument does not take place.

Dies kann beispielsweise durch eine kanalförmige Ausbildung des Ausbringbereichs und eine daran angepasste Ausbildung des Applikationsinstruments erfolgen.This can be done, for example, by a channel-shaped design of the dispensing area and a configuration of the application instrument adapted thereto.

Denkbar ist auch eine schalen- oder wannenförmige Gestaltung einer der Folien im Ausbringbereich, in den die Substanz zum wiederholten Benetzen des Applikationsinstruments ohne Schaftbenetzung durch Ausdrücken der Kammer ähnlich wie bei Tuben gefördert wird.Also conceivable is a dish-shaped or trough-shaped design of one of the films in the dispensing area, into which the substance for repeated wetting of the application instrument without shaft wetting is conveyed by expressing the chamber, similar to tubes.

Die Vorrichtung lässt sich beispielsweise durch folgendes Verfahren herstellen:

  • a) Bereitstellen einer ersten Folie,
  • b) partielles Tiefziehen der ersten Folie unter Bildung von zwei Kammern,
  • c) Befüllen der zwei Kammern mit zwei zu mischenden Substanzen,
  • d) Aufbringen einer zweiten Folie,
  • e) weitgehend flächiges Verbinden der zweiten Folie mit der ersten Folie unter Aussparung der Kammern und Bildung eines selektiv zu öffnenden Durchgangsbereichs zwischen den beiden Kammern sowie im Ausbringbereich.
The device can be produced, for example, by the following method:
  • a) providing a first film,
  • b) partial deep drawing of the first film to form two chambers,
  • c) filling the two chambers with two substances to be mixed,
  • d) applying a second film,
  • e) largely planar connection of the second film with the first film with the recess of the chambers and formation of a selectively openable passage area between the two chambers and in the Ausbringbereich.

In Abhängigkeit davon, welche Ausführungsform zur Volumenvergrößerung der zweiten Kammer gewählt wird, sind weitere Schritte anzuwenden.Depending on which embodiment is chosen to increase the volume of the second chamber, further steps are to be applied.

Entweder wird die erste Folie mit der zweiten Folie im Randbereich der zweiten Kammer nur peelbar miteinander versiegelt.Either the first film with the second film in the edge region of the second chamber is only peelable sealed together.

Alternativ wird die zweite Folie im Bereich der zweiten Kammer vor dem Aufbringen (Schritt d)) tiefgezogen und anschließend mit der Wölbung in Richtung des tiefgezogenen Bereichs der ersten Folie von Schritt b) aufgebracht und versiegelt, wobei eine konkav-konvexe Kammer gebildet wird.Alternatively, the second film in the region of the second chamber before applying (step d)) deep-drawn and then with the curvature in Direction of the deep-drawn portion of the first sheet of step b) applied and sealed, wherein a concavo-convex chamber is formed.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert. Die gestrichelte Darstellungen zeigen die Vorrichtung nach der Aktivierung.

Figur 1
zeigt eine mögliche Ausführungsform der Vorrichtung im Querschnitt.
Figur 2
zeigt eine weitere Ausführungsform der Vorrichtung im Querschnitt.
Figur 3
zeigt eine dritte mögliche Ausführungsform der Vorrichtung im Querschnitt.
Figur 4
zeigt die Ausführungsform gemäß Figur 1 in Draufsicht.
Figur 5
zeigt eine mögliche Ausführungsform der Vorrichtung, enthaltend ein Ventil, im Querschnitt.
Embodiments of the invention are explained below with reference to the drawings. The dashed lines show the device after activation.
FIG. 1
shows a possible embodiment of the device in cross section.
FIG. 2
shows a further embodiment of the device in cross section.
FIG. 3
shows a third possible embodiment of the device in cross section.
FIG. 4
shows the embodiment of Figure 1 in plan view.
FIG. 5
shows a possible embodiment of the device, comprising a valve, in cross section.

Die Vorrichtung gemäß Figur 1 weist eine Basisfolie (1) und eine Deckfolie (2) auf. Im Bereich (3) sind die beiden Folien peelbar miteinander versiegelt, wodurch ein selektiv zu öffnender Durchgangsbereich zwischen den beiden Kammern (5) und (6) gebildet wird. In Figur 1 weist auch der Ausbringbereich (4) einen selektiv zu öffnenden Durchgangsbereich auf. In den Kammern (5) und (6) befinden sich zwei zu mischende Substanzen (A) und (B). Das Volumen der zweiten Kammer (6) lässt sich vergrößern sobald die Vorrichtung durch Ausübung von äußerem Druck auf die erste Kammer (5) aktiviert wird. Diesbezüglich ist die Basisfolie (1) im Bereich der zweiten Kammer (6) konkav nach außen gewölbt und die Deckfolie (2) konvex nach innen gewölbt bzw. vorgeformt.The device according to FIG. 1 has a base film (1) and a cover film (2). In region (3), the two films are peelably sealed together, whereby a selectively openable passage area between the two chambers (5) and (6) is formed. In FIG. 1, the dispensing area (4) also has a passage area to be selectively opened. In the chambers (5) and (6) there are two substances to be mixed (A) and (B). The volume of the second chamber (6) can be increased as soon as the device is activated by exerting external pressure on the first chamber (5). In this regard, the base film (1) in the region of the second chamber (6) is curved concavely outwards and the cover film (2) convexly curved inwards or preformed.

Die Substanz (A) aus der ersten Kammer (5) befindet sich nach der Aktivierung zusammen mit der Substanz (B) in der zweiten Kammer (6). Die Deckfolie (2) weist nun ebenfalls wie die Basisfolie (1) eine konkav nach außen gewölbte Form auf (gestrichelte Linie in Figur 1).The substance (A) from the first chamber (5) is located after activation together with the substance (B) in the second chamber (6). The cover sheet (2) now also has, like the base sheet (1), a concavely convex shape (dashed line in FIG. 1).

Figur 2 zeigt eine weitere mögliche Ausführungsform für die Vorrichtung im Querschnitt. Die Volumenvergrößerung der zweiten Kammer (5) lässt sich erreichen durch eine Vorformung der Basisfolie (1) im Bereich der zweiten Kammer (6) mit Wellenbergen (9) und Wellentälern (10). Je nach Ausführungsform kann zumindest im Bereich eines Wollentales (10) die Basisfolie (1) mit der Deckfolie (2) zusätzlich neben dem Durchgangsbereich (3) peelbar versiegelt sein.FIG. 2 shows a further possible embodiment of the device in cross section. The increase in volume of the second chamber (5) can be achieved by preforming the base film (1) in the region of the second Chamber (6) with wave crests (9) and troughs (10). Depending on the embodiment, at least in the region of a woolen trough (10), the base film (1) with the cover film (2) can additionally be peelably sealed next to the passage region (3).

Beide Substanzen (A) und (B) befinden sich nach der Aktivierung in der zweiten Kammer (6), deren Volumen durch Auswölbung des Wellentals (10) zu einer insgesamt weitgehend konkaven Form vergrößert wurde (gestrichelte Linie in Figur 2).Both substances (A) and (B) are located after the activation in the second chamber (6) whose volume has been increased by bulging of the wave trough (10) to an overall substantially concave shape (dashed line in Figure 2).

Figur 3 zeigt eine weitere mögliche Ausführungsform der Vorrichtung im Querschnitt. Im Randbereich (11) der zweiten Kammer (6) sind Basisfolie (1) und Deckfolie (2) voneinander trennbar vorgeformt. Diese Verformung lässt sich beispielsweise erreichen durch peelbares Versiegeln der Folien in diesem Bereich oder dadurch, dass die Folie in diesem Bereich flachliegend aufeinander gedrückt werden ohne dass sie in diesem Bereich peelbar versiegelt werden.FIG. 3 shows a further possible embodiment of the device in cross section. In the edge region (11) of the second chamber (6), the base film (1) and cover film (2) are preformably preformed from one another. This deformation can be achieved, for example, by peelable sealing of the films in this region or by the film being pressed flat against one another in this region without being peelably sealed in this region.

Die Basisfolie (1) ist im Randbereich (11) der zweiten Kammer (6) nach der Aktivierung von der Deckfolie (2) getrennt bzw. abgehoben worden (gestrichelte Linie in Figur 3). Beide Substanzen (A) und (B) befinden sich nun in der zweiten Kammer (6). Zum Öffnen der Vorrichtung ist nach dem Knicken der Vorrichtung im Durchgangsbereich (3) und anschließende Ausübung von Druck auf die zweite Kammer (6) der durch den selektiv zu öffnenden Durchgangsbereich bedingte Widerstand im Ausbringbereich zu überwinden.The base film (1) has been separated from the cover film (2) in the edge region (11) of the second chamber (6) after activation (dashed line in FIG. 3). Both substances (A) and (B) are now in the second chamber (6). In order to open the device, after the device has buckled in the passage area (3) and subsequent pressure is exerted on the second chamber (6), the resistance in the dispensing area caused by the passage area to be selectively opened must be overcome.

Figur 4 zeigt die Vorrichtung in Anlehnung an Figur 1 in Draufsicht. Der Ausbringbereich (4) weist im Bereich (13) Strömungsbarrieren auf bzw. ist mäanderförmig ausgebildet. Dies verhindert beim Ausbringen der Zusammensetzung aus der Vorrichtung ein Verspritzen.Figure 4 shows the device based on Figure 1 in plan view. The dispensing area (4) has flow barriers in the region (13) or is meander-shaped. This prevents splashing as the composition is dispensed from the device.

In Figur 5 befindet sich in der ersten Kammer (5) und im selektiv zu öffnenden Durchgangsbereich (3) eine weitere Folie (12), die an der Basisfolie (1) befestigt ist und in die zweite Kammer (6) hineinragt, wobei die Folie (12) im Bereich der zweiten Kammer nicht notwendigerweise tiefgezogen ist. Diese Folie (12) übt eine Ventilfunktion aus, die verhindert, dass die nach der Aktivierung der Vorrichtung sich in der zweiten Kammer (6) befindlichen Substanzen (A) und (B) wieder zurück in die erste Kammer (5) gelangen können, wenn zum Ausbringen der Zusammensetzung, umfassend die Substanzen (A) und (B), auf die zweite Kammer (6) Druck ausgeübt wird, um den selektiv zu öffnenden Durchgangsbereich im Ausbringbereich nach außen hin zu öffnen. Der selektiv zu öffnende Durchgangsbereich (3) befindet sich in dieser Ausführungsform zwischen der Ventilfolie (12) und der Deckfolie (2).In FIG. 5, in the first chamber (5) and in the passage area (3) to be selectively opened, a further film (12) is attached to the base film (1) and protrudes into the second chamber (6), wherein the film (12) is not necessarily deep drawn in the region of the second chamber. This film (12) performs a valve function which prevents that after activation of the device located in the second chamber (6) Substances (A) and (B) can get back into the first chamber (5), when for applying the composition comprising the substances (A) and (B), the second chamber (6) pressure is applied to the to open selectively passage area to be opened outwards in the discharge area. The selectively openable passage region (3) is located in this embodiment between the valve film (12) and the cover sheet (2).

Die gestrichelte Darstellung in Figur 5 zeigt die Vorrichtung nach dem Aktivieren. Die Deckfolie (2) hat sich bedingt durch den aufgebauten Innendruck in der zweiten Kammer (6) nach außen gewölbt. Diese Verformung der Deckfolie (2) führt zu einer Volumenvergrößerung der zweiten Kammer (6) und ermöglicht die Aufnahme der beiden Substanzen (A) und (B). Die Ventilfolie (12) wird hierbei an die Deckfolie gepresst und verhindert dadurch das Rückströmen der Mischung in die erste Kammer (5) ohne, dass die Vorrichtung im Durchgangsbereich zwischen den beiden Kammern geknickt werden muss.The dashed line in Figure 5 shows the device after activation. The cover film (2) has curved due to the built-up internal pressure in the second chamber (6) to the outside. This deformation of the cover film (2) leads to an increase in volume of the second chamber (6) and allows the inclusion of the two substances (A) and (B). The valve film (12) is in this case pressed against the cover film and thereby prevents the backflow of the mixture into the first chamber (5) without the device having to be bent in the passage region between the two chambers.

Eine sinnvolle Anwendung findet die Vorrichtung auch bei der Herstellung von beispielsweise mit γ-Strahlen oder Hitze sterilisierbaren Verpackungen. Die in der versiegelten Vorrichtung gelagerte Substanz bzw. die gelagerten Substanzen können bedingt durch die erfindungsgemäße Vorformung mindestens einer der Folien problemlos mit den oben genannten Mitteln sterilisiert werden, auch wenn es hierbei beispielsweise durch Temperaturerhöhung zu Ausgasungen der gelagerten Substanzen kommt, ohne dass die Vorrichtung selbst aktiviert wird bzw. die sich an die Kammer bzw. Kammern angrenzenden selektiv zu öffnenden Durchgangsbereiche geöffnet werden. Diese Art der Verwendung kann auch bei Vorrichtungen zum Tragen kommen, die nur über eine Kammer zur Lagerung einer Substanz verfügen.A useful application, the device also in the production of, for example, with γ-rays or heat sterilizable packaging. The substance stored in the sealed device or the stored substances can be sterilized by the preforming according to the invention at least one of the films easily with the above-mentioned means, even if it comes here for example by increasing the temperature to outgassing of the stored substances without the device itself is activated or opened to the chamber or chambers adjacent selectively open passage areas. This type of use can also be used in devices that have only one chamber for storing a substance.

Claims (20)

  1. Device, comprising a first and a second film (1, 2), a dispensing zone (4), a first chamber (5), containing a first substance (A), and a second chamber (6), containing a second substance (B),
    the chambers (5, 6) being connectable to each other via a transition zone (3) that can be selectively opened, at least one of the films (1, 2) being thermoformed in the area of the chambers (5, 6), characterized in that at least one of the films (1, 2) is pre-formed or plastically deformable in the area of the second chamber (6) in such a way that, after activation of the device, with the transition zone (3) being opened, the first substance (A) can be transferred to a great extent completely into the second chamber (6), with an increase in volume of said second chamber (6), without any appreciable flowing back of the mixture (A+B) into the first chamber (5) occurring.
  2. Device according to Claim 1, the film (1, 2) being concavely-convexly deformed in the area of the second chamber (6).
  3. Device according to Claim 1, at least one of the films (1, 2) having in the area of the second chamber (6) a form which can be obtained by at least partially forming a recess (10) into an initially concavely formed surface.
  4. Device according to Claim 3, the one film (1, 2) reaching as far as the other film in the area of the recess (10) and being sealed in a peelable manner at the point of contact with said other film.
  5. Device according to Claim 1, the films forming the chamber being pre-formed such that they can be separated from each other, at least in an edge zone of the second chamber (6).
  6. Device according to Claim 1, at least one film being expandable in the area of the second chamber (6).
  7. Device according to one of the preceding claims, the second chamber (6) being connectable to the dispensing zone (4) via a transition zone (3) that can be selectively opened.
  8. Device according to one of the preceding claims, a third chamber being located between the first chamber (5) and the second chamber (6) in the transition zone (3) that can be selectively opened.
  9. Device according to one of the preceding claims, a third film (12), which protrudes into the second chamber (6), being attached to one of the films (1, 2) forming the chambers in the transition zone (3) between the two chambers (5, 6).
  10. Device according to one of the preceding claims, the chambers (5, 6) having different volumes before activation.
  11. Device according to one of the preceding claims, comprising an applicator.
  12. Device according to Claim 11, the applicator being located in the dispensing zone (4).
  13. Device according to one of the preceding claims, the first substance (A) being flowable and the second substance (B) being solid.
  14. Device according to one of the preceding claims, flow barriers (13) being located in the dispensing zone (4).
  15. Device according to one of the preceding claims, the transition zone (3) that can be selectively opened allowing itself to be opened by exposure to a hydrostatic pressure in the range from 3 to 300 N/cm2.
  16. Use of the device according to one of the preceding claims for storing, mixing and/or dispensing flowable compositions.
  17. Use according to Claim 16, the flowable compositions being chosen from: human and veterinary medicaments, wound cleaning agents, dental products, adhesives, impression materials, paints, foods.
  18. Method for producing a device according to one of Claims 1 to 15, comprising the steps: a) provision of a first film (1), b) partial thermoforming of the first film (1), thereby forming two chambers (5, 6), c) filling of the two chambers (5, 6) with two substances (A, B) to be mixed, d) application of a second film (2), e) connecting of the second film (2) to the first film (1) to a great extent in surface-area contact, leaving the chambers (5, 6) free and forming a transition zone (3) that can be selectively opened between the two chambers (5, 6).
  19. Method according to Claim 18, the second film (2) being pre-formed in a convex or wave-shaped manner in the area of the second chamber (6) before step d).
  20. Method according to Claim 18, a third film (12) being connected to the first film (1) in the transition zone (3) before step d).
EP01993384A 2000-11-13 2001-11-07 Device for storing and dispensing flowable compositions Expired - Lifetime EP1334047B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10056212A DE10056212B4 (en) 2000-11-13 2000-11-13 Apparatus for storing and dispensing flowable compositions, process for making and using the apparatus
DE10056212 2000-11-13
PCT/EP2001/012865 WO2002038468A1 (en) 2000-11-13 2001-11-07 Device for storing and dispensing flowable compositions

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EP1334047A1 EP1334047A1 (en) 2003-08-13
EP1334047B1 true EP1334047B1 (en) 2005-09-21

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EP (1) EP1334047B1 (en)
JP (1) JP3801988B2 (en)
AT (1) ATE304978T1 (en)
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WO (1) WO2002038468A1 (en)

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CA2422640A1 (en) 2003-03-13
US20040065679A1 (en) 2004-04-08
DE10056212A1 (en) 2002-05-23
AU2181802A (en) 2002-05-21
CA2422640C (en) 2009-10-20
DE50107518D1 (en) 2005-10-27
EP1334047A1 (en) 2003-08-13
JP2004513040A (en) 2004-04-30
DE10056212B4 (en) 2005-08-18
AU2002221818B2 (en) 2006-09-14
ATE304978T1 (en) 2005-10-15
JP3801988B2 (en) 2006-07-26
WO2002038468A1 (en) 2002-05-16
US7097075B2 (en) 2006-08-29

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