EP1523385B1 - Dispensing system for fluid substances - Google Patents

Dispensing system for fluid substances Download PDF

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Publication number
EP1523385B1
EP1523385B1 EP03720501A EP03720501A EP1523385B1 EP 1523385 B1 EP1523385 B1 EP 1523385B1 EP 03720501 A EP03720501 A EP 03720501A EP 03720501 A EP03720501 A EP 03720501A EP 1523385 B1 EP1523385 B1 EP 1523385B1
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EP
European Patent Office
Prior art keywords
cartridge
delivery system
attachment
injectate
resilient arms
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
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EP03720501A
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German (de)
French (fr)
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EP1523385A1 (en
Inventor
Barbara MÜLLER
Werner Mannschedel
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Coltene Whaledent GmbH and Co KG
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Coltene Whaledent GmbH and Co KG
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Publication of EP1523385A1 publication Critical patent/EP1523385A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00503—Details of the outlet element
    • B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00596—The liquid or other fluent material being supplied from a rigid removable cartridge having no active dispensing means, i.e. the cartridge requiring cooperation with means of the handtool to expel the material

Definitions

  • the present invention relates to a dispensing system according to the preamble of claim 1 for fluid substances. More particularly, it relates to a dispensing system comprising a syringe in the form of a cartridge having at least one spray booth provided with an injection piston and an attachment attached to the cartridge at the dispensing end thereof.
  • a double-barreled syringe which comprises a cartridge of two axially parallel juxtaposed Spritzguthuntn with guided injection piston, to which a mixing tip is attached.
  • the attachment is done so far by simply plugging or by a screw connection ("luer lock closure"), in which an internal or external thread is provided on the piston syringe, in which engages the provided with a complementary complementary mixing syringe.
  • a dispensing system consisting of a cartridge and an attachment for fluid substances, in which at the discharge end of the cartridge as an attachment a mixing tip or a closure can be attached.
  • a snap closure is provided on this, which can be latched with locking recesses on the cartridge.
  • the US-B-6,394,314 discloses a fluid substance dispensing system also formed of a cartridge and an attachment in the form of a mixing tip or closure.
  • the attachment is provided with a bayonet lock with which the attachment to the cartridge can be releasably attached.
  • the object of the present invention is to overcome the disadvantages of the known in the prior art solutions for attaching an attachment to a syringe. This object is achieved by the features of the independent claim. Advantageous embodiments of the invention are specified in the subclaims.
  • a fluid substance delivery system comprising a syringe and an attachment attached thereto.
  • the syringe comprises a cartridge having at least one spit chamber provided with an injection piston. If the cartridge has a plurality of spray-material chambers, then injection-molded pistons can either be inserted individually or jointly into the spray-material chambers or pulled out of them, the injection-molded pistons advantageously being connected together by a suitable connecting element in the latter case.
  • a locking clip is arranged, to which the attachment is fastened by means of a releasable snap closure.
  • a characteristic feature of the invention provides that the attachment is secured by means of the releasable snap closure to the cartridge.
  • the releasable snap closure can basically be designed in any way, as long as it is ensured that when snapping the snap closure any increase by elastic-plastic deformation of the cartridge and / or attachment snaps into any depression.
  • the snap closure in the form of an attached to the attachment sliding sleeve with inner collar, which is pushed over a mounted on the outside of the cartridge outer collar present.
  • the latching of the snap closure is done with a vocal Einrastge Hursch so that the engagement of the operator can be controlled acoustically.
  • two hooks are formed on the attachment for its attachment to the cartridge by means of a snap closure, which are substantially diametrically opposed to each other.
  • the hooks each engage in undercut recesses assigned to them, wherein each recess is arranged on a spring arm which is formed on the latching clip and which is elastically loaded when deflected out of its rest position.
  • the hooks can get into engagement with the undercut depressions, this must first be overcome, the elastic spring force of the spring arms. If the hooks are in engagement with the undercut depressions, the elastic spring force of the spring arms likewise ensures that the hooks are secured against loosening.
  • the spring arms are designed in particular as sections of the latching clip fastened on the delivery-side end of the cartridge, whereby the cartridge and the latching clip can first be manufactured separately and subsequently joined.
  • conventional cartridges can be provided with the latching clamp carrying the spring arms for the snap closure, so that cartridges which have already been manufactured can also be retrofitted with a snap closure.
  • the locking clip in the form of the outlet openings of the cartridge encompassing (part) rings before, which are connected to each other by at least one web-like element.
  • the undercut depressions having spring arms protrude from the rings symmetrically from, in such a way that they can be converted into one another by turning the cartridge about its longitudinal axis by 180 °.
  • the spring arms can be provided for elastic deflection of the spring arms with pressure surfaces in the form of area-like widenings.
  • pressure surfaces are substantially diametrically opposite each other, so that the snap closure can be solved in a particularly simple and practical way by simultaneously pressing the pressure surfaces, for example by the pressure surfaces with the thumb and forefinger of a user are brought together.
  • the attachment is designed such that it has no rotational symmetry with respect to axes of rotation in the longitudinal axis of the cartridge.
  • the attachment can in this sense have an oval or triangular cross-sectional area. This allows the attachment, especially in the presence of several Spritzguthuntn, in a certain ("right") way, d. H. in a specific assignment of spray booths to an internal structure of the attachment, are placed on the cartridge. A possible “wrong" placement of the attachments in the necessarily rotationally symmetrical in the prior art luer-lock closures can be avoided.
  • the attachment according to the invention may be a mixing tip, which receives the spray material of the spray-material chambers ejected by the injection piston under pressure through the outlet openings and releases it again in mixed form.
  • it may be in the attachment according to the invention to act a cap for closing the outlet openings of Spritzguthuntn.
  • Fig. 1 is considered, wherein an exploded view of an embodiment of the dispensing system according to the invention is shown.
  • the reference numeral 1 denotes the cartridge of a double-barreled syringe.
  • the cartridge is provided with two spray chambers, each opening into an outlet opening 2.
  • Reference numeral 3 denotes a detent bracket provided with spring arms on which the undercut recesses are arranged as part of the snap lock mechanism.
  • the locking clip 3 is fitted onto the cartridge, in particular its outlet openings 2.
  • a mixing tip is shown in FIG. 1, which in turn is composed of a distributor unit 4 and a mixing / dispensing unit 5.
  • the distributor unit 4 is provided with inlet openings 6, which pass into the outlet openings 2 of the cartridge during assembly of the arrangement and take over the sprayed material, which is ejected through the outlet openings 2 by inserting the injection plungers into the spray booths.
  • the mixing / dispensing unit 5 has a spiral 10 located within the dispensing tip 11, which ensures thorough mixing of the injection material.
  • the discharge tip 11 is provided with an opening 8 for discharging the injection molding.
  • two diametrically opposed hooks 9 are arranged, which come in assembly of the arrangement in engagement with the undercut depressions of the spring arms of the locking clip 3.
  • FIG. 2 shows an enlarged plan view of the latching clip 3 of FIG. 1 in a position plugged onto the outlet openings 2 of the cartridge 1.
  • the locking clip 3 surrounds by means of partial rings 12, the outlet openings 2 of the cartridge 1, wherein the partial rings 12 are connected by a web-like connecting element 13 with each other.
  • the partial rings 12 protrude the spring arms 14, respectively in the direction of the other part ring from.
  • the spring arms 14 can be transferred by rotation of the cartridge 1 about its longitudinal axis by 180 ° into each other.
  • the spring arms are elastically loaded along the directions indicated by the arrows.
  • the undercut depressions 15 are respectively arranged on the spring arms 14, into which hooks 9 of the mixing tip engage in the assembled state of the arrangement.
  • the hooks 9 can engage in the undercut recesses 15, the spring arms must be deflected in a direction towards each other to elastic. In the engaged state ensures the elastic spring force of the spring arms for securing the snap connection.
  • the spring arms 14 are above Be provided with diametrically opposite arranged pressure surfaces 16, through which with a sufficient pressure perpendicular to the axial direction of the cartridge, a deflection of the spring arms is effected, so that when a simultaneous actuation of the pressure surfaces, the hooks 9 come out of engagement with the undercut recesses 15 and the Snap closure can be solved.
  • FIG. 3 shows a closure cap 17 for the cartridge.
  • the closure cap 17 is provided with sack sleeves 18 which, when joined to the cartridge 1, close the outlet openings 2 of the spray-material chambers.
  • the closure cap 17 also has diametrically opposite hooks 19 which, when the closure cap is fastened to the cartridge, engage with the undercut depressions 15 of the spring arms 14 of the latching clip 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)

Description

Die vorliegende Erfindung betrifft ein Abgabesystem nach dem Oberbegriff des Anspruchs 1 für fluide Substanzen. Insbesondere betrifft sie ein Abgabesystem, welches eine Kolbenspritze in Form einer Kartusche mit wenigstens einer Spritzgutkammer, die mit einem Spritzkolben versehen ist, und ein an der Kartusche an deren abgabeseitigem Ende befestigtes Anbauteil umfasst.The present invention relates to a dispensing system according to the preamble of claim 1 for fluid substances. More particularly, it relates to a dispensing system comprising a syringe in the form of a cartridge having at least one spray booth provided with an injection piston and an attachment attached to the cartridge at the dispensing end thereof.

Derartige Abgabesysteme sind bereits im Stand der Technik bekannt. Beispielsweise wird eine doppelläufige Kolbenspritze verwendet, welche eine Kartusche aus zwei achsparallel nebeneinanderliegenden Spritzgutkammern mit darin geführten Spritzkolben umfasst, an welcher eine Mischspitze befestigt ist. Die Befestigung erfolgt bislang durch einfaches Aufstecken oder durch eine Schraubverbindung ("luer-lock-Verschluss"), bei dem an der Kolbenspritze ein Innen- oder Außengewinde vorgesehen ist, in welches die mit einem hierzu komplementären Gewinde versehene Mischspritze greift.Such dispensing systems are already known in the art. For example, a double-barreled syringe is used, which comprises a cartridge of two axially parallel juxtaposed Spritzgutkammern with guided injection piston, to which a mixing tip is attached. The attachment is done so far by simply plugging or by a screw connection ("luer lock closure"), in which an internal or external thread is provided on the piston syringe, in which engages the provided with a complementary complementary mixing syringe.

So ist aus der EP-A-0 408 331 ein Abgabesystem bestehend aus einer Kartusche und einem Anbauteil für fluide Substanzen bekannt, bei dem am abgabeseitigen Ende der Kartusche als Anbauteil eine Mischspitze oder ein Verschluß befestigt werden kann. Zum sicheren Halten des Anbauteiles ist an diesem ein Schnappverschluß vorgesehen, der mit Rastvertiefungen an der Kartusche verrastbar ist.So is out of the EP-A-0 408 331 a dispensing system consisting of a cartridge and an attachment for fluid substances, in which at the discharge end of the cartridge as an attachment a mixing tip or a closure can be attached. For secure holding of the attachment a snap closure is provided on this, which can be latched with locking recesses on the cartridge.

Die US-B-6 394 314 offenbart ein Abgabesystem für fluide Substanzen, das gleichfalls aus einer Kartusche und einem Anbauteil in Form einer Mischspitze oder einem Verschluß gebildet ist. Das Anbauteil ist mit einem Bajonettverschluß versehen, mit dem das Anbauteil an der Kartusche lösbar befestigt werden kann.The US-B-6,394,314 discloses a fluid substance dispensing system also formed of a cartridge and an attachment in the form of a mixing tip or closure. The attachment is provided with a bayonet lock with which the attachment to the cartridge can be releasably attached.

In der EP-A-0 993 864 ist ein Abgabesystem für fluide Substanzen beschrieben, das aus einer Kartusche, einem Anbauteil und einer zwischen diesen angeordneten Rastklammer gebildet ist, wobei die Rastklammer mit der Kartusche verrastbar ist.In the EP-A-0 993 864 is described a discharge system for fluid substances, which is formed from a cartridge, an attachment and a locking clamp arranged between them, wherein the locking clip is latched to the cartridge.

Die im Stand der Technik bekannten Lösungen zum Befestigen von Anbauteilen an der Kolbenspritze sind jedoch mit wesentlichen Nachteilen behaftet. So sind Steckverbindungen bei dem Einsatz von hochviskösen Fluiden keine sichere Verbindung, weil sie einem hier notwendigen höheren.Kolbendruck im allgemeinen nicht standhalten. Dieses Problem tritt zwar bei den luer-lock-Verschlüssen nicht auf, jedoch besteht hier, vor allem bei hochviskösen Fluiden, die Gefahr einer Kontamination beim Auf- und Absetzen des Anbauteiles durch ein Verschmieren von Austrittsöffnungen der Kartusche.However, known in the prior art solutions for attaching attachments to the syringe are associated with significant disadvantages. Thus, connectors are in the use of highly viscous fluids is not a secure connection, because they do not withstand a higher.Kolbendruck necessary here in general. Although this problem does not occur in the case of the luer-lock closures, there is a risk of contamination during setting-up and setting-down of the attachment due to smearing of outlet openings of the cartridge, especially in the case of highly viscous fluids.

Die Aufgabe der vorliegenden Erfindung liegt darin die Nachteile der im Stand der Technik bekannten Lösungen zur Befestigung eines Anbauteils an einer Kolbenspritze zu überwinden. Diese Aufgabe wird erfindungsgemäß durch die Merkmale des unabhängigen Anspruchs gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.The object of the present invention is to overcome the disadvantages of the known in the prior art solutions for attaching an attachment to a syringe. This object is achieved by the features of the independent claim. Advantageous embodiments of the invention are specified in the subclaims.

Erfindungsgemäß ist ein Abgabesystem für fluide Substanzen gezeigt, welches eine Kolbenspritze und ein daran befestigtes Anbauteil umfasst. Die Kolbenspritze umfasst eine Kartusche mit wenigstens einer Spitzgutkammer, die mit einem Spritzkolben versehen ist. Weist die Kartusche mehrere Spritzgutkammern auf, so können Spritzkolben entweder einzeln oder gemeinsam in die Spritzgutkammern eingeschoben oder aus diesen herausgezogen werden, wobei die Spritzkolben im letzteren Fall vorteilhaft durch ein geeignetes Verbindungselement miteinander verbunden sind. Zwischen der Kartusche und dem Anbauteil ist eine Rastklammer angeordnet, an der das Anbauteil mittels eines lösbaren Schnappverschlusses befestigt ist.According to the invention, there is shown a fluid substance delivery system comprising a syringe and an attachment attached thereto. The syringe comprises a cartridge having at least one spit chamber provided with an injection piston. If the cartridge has a plurality of spray-material chambers, then injection-molded pistons can either be inserted individually or jointly into the spray-material chambers or pulled out of them, the injection-molded pistons advantageously being connected together by a suitable connecting element in the latter case. Between the cartridge and the attachment a locking clip is arranged, to which the attachment is fastened by means of a releasable snap closure.

Ein charakteristisches Merkmal der Erfindung sieht vor, dass das Anbauteil mittels des lösbaren Schnappverschlusses an der Kartusche befestigt ist. Der lösbare Schnappverschluss kann grundsätzlich in beliebiger Weise gestaltet sein, solange gewährleistet ist, dass bei Einrasten des Schnappverschlusses eine irgend geartete Erhöhung durch elastisch-plastische Verformung von Kartusche und/oder Anbauteil in eine irgend geartete Vertiefung einrastet. Beispielsweise kann der Schnappverschluss in Form einer an dem Anbauteil angebrachten Schiebemuffe mit Innenbundring, welche über einen auf der Außenseite der Kartusche angebrachten Außenbundring geschoben wird, vorliegen. Vorteilhaft erfolgt das Einrasten des Schnappverschlusses mit einem vernehmbaren Einrastgeräusch, so dass das Einrasten von dem Bediener akustisch kontrolliert werden kann.A characteristic feature of the invention provides that the attachment is secured by means of the releasable snap closure to the cartridge. The releasable snap closure can basically be designed in any way, as long as it is ensured that when snapping the snap closure any increase by elastic-plastic deformation of the cartridge and / or attachment snaps into any depression. For example, the snap closure in the form of an attached to the attachment sliding sleeve with inner collar, which is pushed over a mounted on the outside of the cartridge outer collar present. Advantageously, the latching of the snap closure is done with a vocal Einrastgeräusch so that the engagement of the operator can be controlled acoustically.

Bei einer erfindungsgemäß bevorzugten Ausführungsform der Erfindung sind am Anbauteil zu dessen Befestigung an der Kartusche mittels eines Schnappverschlusses zwei Haken ausgebildet, die einander im wesentlichen diametral gegenüberliegen. Die Haken greifen jeweils in ihnen zugewiesene hinterschneidende Vertiefungen, wobei jede Vertiefung auf einem an der Rastklammer ausgebildeten, bei Auslenkung aus seiner Ruhelage elastisch belasteten Federarm angeordnet ist. Damit die Haken in Eingriff mit den hinterschneidenden Vertiefungen gelangen können, muss hierzu zunächst die elastische Federkraft der Federarme überwunden werden. Befinden sich die Haken in Eingriff mit den hinterschneidenden Vertiefungen so sorgt die elastische Federkraft der Federarme gleichermaßen dafür, dass die Haken gegen ein Lösen gesichert sind.In a preferred embodiment of the invention according to the invention two hooks are formed on the attachment for its attachment to the cartridge by means of a snap closure, which are substantially diametrically opposed to each other. The hooks each engage in undercut recesses assigned to them, wherein each recess is arranged on a spring arm which is formed on the latching clip and which is elastically loaded when deflected out of its rest position. Thus, the hooks can get into engagement with the undercut depressions, this must first be overcome, the elastic spring force of the spring arms. If the hooks are in engagement with the undercut depressions, the elastic spring force of the spring arms likewise ensures that the hooks are secured against loosening.

Die Federarme sind insbesondere als Abschnitte der auf dem abgabeseitigen Ende der Kartusche befestigten Rastklammer ausgebildet, wobei Kartusche und Rastklammer zunächst separat gefertigt und anschließend gefügt werden können. In vorteilhafter Weise können so herkömmliche Kartuschen mit der die Federarme für den Schnappverschluss tragenden Rastklammer versehen werden, so dass auch bereits gefertigte Kartuschen mit einem Schnappverschluss nachgerüstet werden können.The spring arms are designed in particular as sections of the latching clip fastened on the delivery-side end of the cartridge, whereby the cartridge and the latching clip can first be manufactured separately and subsequently joined. In an advantageous manner, conventional cartridges can be provided with the latching clamp carrying the spring arms for the snap closure, so that cartridges which have already been manufactured can also be retrofitted with a snap closure.

Bei einer vorteilhaften, sehr einfachen Ausführungsform der Rastklammer liegt diese in Form von die Austrittsöffnungen der Kartusche umgreifenden (Teil-)Ringen vor, die miteinander durch wenigstens ein stegartiges Element verbunden sind. Die die hinterschneidenden Vertiefungen aufweisenden Federarme ragen hierbei von den Ringen symmetrisch ab, und zwar derart, dass sie bei Drehung der Kartusche um deren Längsachse um 180° ineinander überführt werden können.In an advantageous, very simple embodiment of the locking clip this is in the form of the outlet openings of the cartridge encompassing (part) rings before, which are connected to each other by at least one web-like element. The undercut depressions having spring arms protrude from the rings symmetrically from, in such a way that they can be converted into one another by turning the cartridge about its longitudinal axis by 180 °.

Weiterhin können die Federarme zur elastischen Auslenkung der Federarme mit Druckflächen in Form von flächenartigen Verbreiterungen versehen sein. Durch Ausüben einer ausreichenden Druckkraft auf die Druckflächen werden unter Auslenkung der Federarme die Haken und die hinterschneidenden Vertiefungen relativ zueinander verschoben, so dass die Haken aus dem Eingriff mit den hinterschneidenden Vertiefungen gelangen und der Schnappverschluss gelöst werden kann. Vorteilhaft liegen die Druckflächen einander im wesentlichen diametral gegenüber, so dass der Schnappverschluss in besonders einfacher und praktischer Weise durch gleichzeitiges Drücken der Druckflächen, beispielsweise indem die Druckflächen mit Daumen und Zeigefinger eines Benutzers gleichzeitig zusammengebracht werden, gelöst werden kann.Furthermore, the spring arms can be provided for elastic deflection of the spring arms with pressure surfaces in the form of area-like widenings. By exerting a sufficient compressive force on the pressure surfaces, the hooks and the undercut depressions are displaced relative to one another under deflection of the spring arms, so that the hooks come out of engagement with the undercut depressions and the snap closure can be released. Advantageously, the pressure surfaces are substantially diametrically opposite each other, so that the snap closure can be solved in a particularly simple and practical way by simultaneously pressing the pressure surfaces, for example by the pressure surfaces with the thumb and forefinger of a user are brought together.

Bei einer besonders vorteilhaften Ausführungsform ist das Anbauteil derart gestaltet, dass es keine Rotationssymmetrie bezüglich Rotationsachsen in der Längsachse der Kartusche aufweist. Beispielsweise kann das Anbauteil in diesem Sinne eine ovale oder dreieckige Querschnittsfläche aufweisen. Hierdurch kann das Anbauteil, vor allem bei Vorliegen von mehreren Spritzgutkammern, in einer bestimmten ("richtigen") Weise, d. h. in einer bestimmten Zuordnung von Spritzgutkammern zu einer Innenstruktur des Anbauteiles, auf die Kartusche aufgesetzt werden. Ein mögliches "falsches" Aufsetzen der Anbauteile bei den im Stand der Technik notwendigerweise rotationssymmetrischen luer-lock-Verschlüssen kann so vermieden werden.In a particularly advantageous embodiment, the attachment is designed such that it has no rotational symmetry with respect to axes of rotation in the longitudinal axis of the cartridge. For example, the attachment can in this sense have an oval or triangular cross-sectional area. This allows the attachment, especially in the presence of several Spritzgutkammern, in a certain ("right") way, d. H. in a specific assignment of spray booths to an internal structure of the attachment, are placed on the cartridge. A possible "wrong" placement of the attachments in the necessarily rotationally symmetrical in the prior art luer-lock closures can be avoided.

Bei dem erfindungsgemäßen Anbauteil kann es sich um eine Mischspitze handeln, welche das von den Spritzkolben unter Druck durch die Austrittsöffnungen ausgestoßene Spritzgut der Spritzgutkammern aufnimmt und in gemischter Form wieder abgibt. Alternativ kann es sich bei dem erfindungsgemäßen Anbauteil um eine Verschlusskappe zum Verschließen der Austrittsöffnungen der Spritzgutkammern handeln. Durch das durch den erfindungsgemäßen Schnappverschluss ermöglichte leichte Aufbringen und Entfernen der Verschlusskappe können (gegebenenfalls bereits benutzte und noch teilweise) gefüllte Kartuschen in praktischer Weise an einem bestimmten Ort, beispielsweise einem Kühlschrank, gelagert und anschließend wieder verwendet werden, ohne dass hierbei die Gefahr einer Kontamination bestünde.The attachment according to the invention may be a mixing tip, which receives the spray material of the spray-material chambers ejected by the injection piston under pressure through the outlet openings and releases it again in mixed form. Alternatively, it may be in the attachment according to the invention to act a cap for closing the outlet openings of Spritzgutkammern. The light application and removal of the closure cap made possible by the snap closure according to the invention makes it possible to store (optionally already used and partially) filled cartridges in a practical manner at a specific location, for example a refrigerator, and then reuse them without the risk of contamination existed.

Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert, wobei Bezug auf die beigefügten Zeichnungen genommen wird. Es zeigen

Fig. 1
eine Explosionsdarstellung eines erfindungsgemäßen Abgabesystems,
Fig. 2
eine vergrößerte Draufsicht, der Rastklammer von Fig. 1,
Fig. 3
eine perspektivische Ansicht einer Verschlusskappe.
The invention will now be explained in more detail with reference to an embodiment, reference being made to the accompanying drawings. Show it
Fig. 1
an exploded view of a delivery system according to the invention,
Fig. 2
an enlarged plan view of the locking clip of Fig. 1,
Fig. 3
a perspective view of a cap.

Zunächst sei Fig. 1 betrachtet, worin eine Explosionsdarstellung eines Ausführungsbeispiels des erfindungsgemäßen Abgabesystems dargestellt ist. Die Bezugsziffer 1 bezeichnet die Kartusche einer doppelläufigen Kolbenspritze. Die Kartusche ist mit zwei Spritzgutkammern versehen, die jeweils in eine Austrittsöffnung 2 münden. Die Bezugsziffer 3 bezeichnet eine Rastklammer, welche mit Federarmen versehen ist, auf welchen die hinterschneidenden Vertiefungen als Teil des Schnappverschlussmechanismus angeordnet sind. Die Rastklammer 3 wird auf die Kartusche, insbesondere deren Austrittsöffnungen 2 aufgesteckt. Ferner ist in Fig. 1 eine Mischspitze dargestellt, welche ihrerseits aus einer Verteilereinheit 4 und einer Misch-/Abgabeeinheit 5 zusammengesetzt ist. Die Verteilereinheit 4 ist mit Eintrittsöffnungen 6 versehen, welche beim Zusammenbau der Anordnung in die Austrittsöffnungen 2 der Kartusche gelangen und das Spritzgut übernehmen, welches durch Einführen der Spritzkolben in die Spritzgutkammern durch die Austrittsöffnungen 2 ausgestoßen wird. Die Misch-/Abgabeeinheit 5 weist eine innerhalb der Abgabespitze 11 befindliche Spirale 10, welche für eine Durchmischung des Spritzguts sorgt. Die Abgabespitze 11 ist mit einer Öffnung 8 zur Abgabe des Spritzguts versehen. An der Verteilereinheit 4 sind zwei einander diametral gegenüberliegende Haken 9 angeordnet, welche bei Zusammenbau der Anordnung in Eingriff mit den hinterschneidenden Vertiefungen der Federarme der Rastklammer 3 gelangen.First, Fig. 1 is considered, wherein an exploded view of an embodiment of the dispensing system according to the invention is shown. The reference numeral 1 denotes the cartridge of a double-barreled syringe. The cartridge is provided with two spray chambers, each opening into an outlet opening 2. Reference numeral 3 denotes a detent bracket provided with spring arms on which the undercut recesses are arranged as part of the snap lock mechanism. The locking clip 3 is fitted onto the cartridge, in particular its outlet openings 2. Furthermore, a mixing tip is shown in FIG. 1, which in turn is composed of a distributor unit 4 and a mixing / dispensing unit 5. The distributor unit 4 is provided with inlet openings 6, which pass into the outlet openings 2 of the cartridge during assembly of the arrangement and take over the sprayed material, which is ejected through the outlet openings 2 by inserting the injection plungers into the spray booths. The mixing / dispensing unit 5 has a spiral 10 located within the dispensing tip 11, which ensures thorough mixing of the injection material. The discharge tip 11 is provided with an opening 8 for discharging the injection molding. At the distribution unit 4, two diametrically opposed hooks 9 are arranged, which come in assembly of the arrangement in engagement with the undercut depressions of the spring arms of the locking clip 3.

Fig. 2 zeigt eine vergrößerte Draufsicht der Rastklammer 3 von Fig. 1 in einer auf die Austrittsöffnungen 2 der Kartusche 1 aufgesteckten Position. Die Rastklammer 3 umgreift mittels Teilringe 12 die Austrittsöffnungen 2 der Kartusche 1, wobei die Teilringe 12 durch ein stegartiges Verbindungselement 13 miteinander verbunden sind. Von den Teilringen 12 ragen die Federarme 14, jeweils in Richtung zu dem anderen Teilring, ab. Die Federarme 14 können bei Drehung der Kartusche 1 um deren Längsachse um 180° ineinander überführt werden. Die Federarme sind längs den durch die Pfeile angegebenen Richtungen elastisch belastet. An den Federarmen 14 sind jeweils die hinterschneidenden Vertiefungen 15 angeordnet, in welche in zusammengefügten Zustand der Anordnung die Haken 9 der Mischspitze greifen. Damit die Haken 9 in die hinterschneidenden Vertiefungen 15 greifen können, müssen die Federarme in einer Richtung aufeinander zu elastisch ausgelenkt werden. Im Eingriffszustand sorgt die elastische Federkraft der Federarme für eine Sicherung der Schnappverbindung. Die Federarme 14 sind darüber hinaus mit einander diametral gegenüberliegend angeordneten Druckflächen 16 versehen, durch welche mit einem ausreichenden Druck senkrecht zur Axialrichtung der Kartusche eine Auslenkung der Federarme bewirkt wird, so dass bei einer gleichzeitigen Betätigung der Druckflächen die Haken 9 aus dem Eingriff mit den hinterschneidenden Vertiefungen 15 gelangen und der Schnappverschluss gelöst werden kann.FIG. 2 shows an enlarged plan view of the latching clip 3 of FIG. 1 in a position plugged onto the outlet openings 2 of the cartridge 1. The locking clip 3 surrounds by means of partial rings 12, the outlet openings 2 of the cartridge 1, wherein the partial rings 12 are connected by a web-like connecting element 13 with each other. Of the partial rings 12 protrude the spring arms 14, respectively in the direction of the other part ring from. The spring arms 14 can be transferred by rotation of the cartridge 1 about its longitudinal axis by 180 ° into each other. The spring arms are elastically loaded along the directions indicated by the arrows. The undercut depressions 15 are respectively arranged on the spring arms 14, into which hooks 9 of the mixing tip engage in the assembled state of the arrangement. Thus, the hooks 9 can engage in the undercut recesses 15, the spring arms must be deflected in a direction towards each other to elastic. In the engaged state ensures the elastic spring force of the spring arms for securing the snap connection. The spring arms 14 are above Be provided with diametrically opposite arranged pressure surfaces 16, through which with a sufficient pressure perpendicular to the axial direction of the cartridge, a deflection of the spring arms is effected, so that when a simultaneous actuation of the pressure surfaces, the hooks 9 come out of engagement with the undercut recesses 15 and the Snap closure can be solved.

Fig. 3 schließlich zeigt eine Verschlusskappe 17 für die Kartusche. Die Verschlusskappe 17 ist mit Sackhülsen 18 versehen, welche bei Zusammenfügen mit der Kartusche 1 die Austrittsöffnungen 2 der Spritzgutkammern verschließen. Die Verschlusskappe 17 weist ferner diametral gegenüberliegend angeordnete Haken 19 auf, die bei Befestigen der Verschlusskappe an der Kartusche in Eingriff mit den hinterschneidenden Vertiefungen 15 der Federarme 14 der Rastklammer 3 gelangen.Finally, FIG. 3 shows a closure cap 17 for the cartridge. The closure cap 17 is provided with sack sleeves 18 which, when joined to the cartridge 1, close the outlet openings 2 of the spray-material chambers. The closure cap 17 also has diametrically opposite hooks 19 which, when the closure cap is fastened to the cartridge, engage with the undercut depressions 15 of the spring arms 14 of the latching clip 3.

Claims (11)

  1. Delivery system for fluid substances, which comprises a plunger-type syringe in the form of a cartridge (1) having at least one injectate chamber, which injectate chamber is provided with an injection plunger, an attachment (5, 17) mounted on the cartridge (1) at its delivery-side end, and a locking clip (3) disposed between the cartridge (1) and the attachment (5, 17), wherein the locking clip (3) is locked with the cartridge (1), characterised in that the attachment (5, 17) is mounted on the locking clip (3) by means of a releasable snap closure (9).
  2. Delivery system according to claim 1, characterised in that the cartridge (1) has at least two axially parallel, adjacently arranged injectate chambers having separate outlet openings (2).
  3. Delivery system according to claim 1 or 2, characterised in that there are formed on the attachment (5, 17), for the purpose of its being mounted on the cartridge (1), two hooks (9) which are arranged substantially diametrically opposite; and there are formed on the delivery-side end of the cartridge (1) on the locking clips (3) two resilient arms (14) which are resiliently biased on being deflected out of their rest position, each of which is provided with an undercut groove (15) arranged facing a hook (9), the hooks (9) engaging in the undercut grooves (15) facing them.
  4. Delivery system according to claim 3, characterised in that the resilient arms (14) are in the form of portions of the locking clip(3) mounted on the delivery-side end of the cartridge (1).
  5. Delivery system according to claim 4, characterised in that the locking clip (3) takes the form of (incomplete) rings (12) which engage around the outlet openings (2) of the cartridge (1) and are joined to one another by at least one rib-like element (13), having resilient arms (14) which project from the (incomplete) rings (12), which resilient arms (14) can take each other's places by rotation of the cartridge through 180° about its longitudinal axis.
  6. Delivery system according to any one of claims 3 to 5, characterised in that for the resilient deflection of the resilient arms (14) the resilient arms (14) are provided with pressure faces (16) in the form of planar widened portions, the hooks (9) becoming disengaged from the undercut grooves (15) by exertion of a sufficient pressing force on the pressure faces (16).
  7. Delivery system according to claim 6, characterised in that the pressure faces (16) lie substantially diametrically opposite one another.
  8. Delivery system according to any one of the preceding claims, characterised in that the attachment is a mixer tip (5) which receives the injectate from the injectate chambers which has been expelled under pressure through the outlet openings (2) by the injection plungers and delivers it in mixed form.
  9. Delivery system according to any one of the preceding claims 1 to 7, characterised in that the attachment is a closure cap (17) for closing the outlet openings (2) of the injectate chambers.
  10. Delivery system according to any one of the preceding claims, characterised in that the attachment (5, 17) has no rotational symmetry about axes of rotation in the longitudinal direction of the cartridge (1).
  11. Delivery system according to any one of the preceding claims, characterised in that the snap closure (9) locks into place with an audible sound.
EP03720501A 2002-07-19 2003-04-17 Dispensing system for fluid substances Expired - Lifetime EP1523385B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10233051A DE10233051A1 (en) 2002-07-19 2002-07-19 Dispensing system for fluid substances
DE10233051 2002-07-19
PCT/EP2003/004092 WO2004009249A1 (en) 2002-07-19 2003-04-17 Dispensing system for fluid substances

Publications (2)

Publication Number Publication Date
EP1523385A1 EP1523385A1 (en) 2005-04-20
EP1523385B1 true EP1523385B1 (en) 2007-08-01

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EP03720501A Expired - Lifetime EP1523385B1 (en) 2002-07-19 2003-04-17 Dispensing system for fluid substances

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US (1) US7316330B2 (en)
EP (1) EP1523385B1 (en)
JP (1) JP2005536331A (en)
AR (1) AR040572A1 (en)
AT (1) ATE368522T1 (en)
AU (1) AU2003224102A1 (en)
CA (1) CA2493069A1 (en)
DE (2) DE10233051A1 (en)
ES (1) ES2287470T3 (en)
PT (1) PT1523385E (en)
WO (1) WO2004009249A1 (en)

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US7316330B2 (en) 2008-01-08
US20050230422A1 (en) 2005-10-20
CA2493069A1 (en) 2004-01-29
JP2005536331A (en) 2005-12-02
AU2003224102A1 (en) 2004-02-09
EP1523385A1 (en) 2005-04-20
PT1523385E (en) 2007-11-13
DE10233051A1 (en) 2004-02-05
ES2287470T3 (en) 2007-12-16
AR040572A1 (en) 2005-04-13
WO2004009249A1 (en) 2004-01-29
ATE368522T1 (en) 2007-08-15
DE50307822D1 (en) 2007-09-13

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