EP1523385A1 - Dispensing system for fluid substances - Google Patents

Dispensing system for fluid substances

Info

Publication number
EP1523385A1
EP1523385A1 EP03720501A EP03720501A EP1523385A1 EP 1523385 A1 EP1523385 A1 EP 1523385A1 EP 03720501 A EP03720501 A EP 03720501A EP 03720501 A EP03720501 A EP 03720501A EP 1523385 A1 EP1523385 A1 EP 1523385A1
Authority
EP
European Patent Office
Prior art keywords
cartridge
dispensing system
spring arms
attachment
outlet openings
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.)
Granted
Application number
EP03720501A
Other languages
German (de)
French (fr)
Other versions
EP1523385B1 (en
Inventor
Barbara MÜLLER
Werner Mannschedel
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.)
Coltene Whaledent GmbH and Co KG
Original Assignee
Coltene Whaledent GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coltene Whaledent GmbH and Co KG filed Critical Coltene Whaledent GmbH and Co KG
Publication of EP1523385A1 publication Critical patent/EP1523385A1/en
Application granted granted Critical
Publication of EP1523385B1 publication Critical patent/EP1523385B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 delivery system for fluid substances.
  • a dispensing system which comprises a plunger syringe in the form of a cartridge with at least one spray material chamber, which is provided with a plunger, and an attachment part fastened to the cartridge at its end on the dispensing side.
  • a double-barrel plunger syringe which comprises a cartridge consisting of two spray material chambers lying axially parallel next to one another with plungers guided therein, to which a mixing tip is attached.
  • the attachment is made so far by simply plugging in or by a screw connection ( "luer-lock closure"), is provided in the syringe on the piston an internal or external thread, in which the complementary thereto, provided with a thread mixing 'engages syringe.
  • the solutions known in the prior art for fastening add-on parts to the piston syringe have significant disadvantages.
  • plug connections are not a safe connection when using highly viscous fluids because they generally cannot withstand the higher piston pressure required here.
  • This problem does not occur with the luer lock closures, there is a risk of contamination, especially with highly viscous fluids, when attaching and removing the add-on part by smearing the outlet openings of the cartridge.
  • the object of the present invention is to overcome the disadvantages of the solutions known in the prior art for fastening an attachment to a piston syringe. According to the invention, this object is achieved by the features of the independent claim.
  • Advantageous embodiments of the invention are specified in the subclaims.
  • a delivery system for fluid substances which comprises a plunger syringe and an attachment attached to it.
  • the plunger syringe comprises a cartridge with at least one litter chamber, which is provided with a plunger. If the cartridge has a plurality of spray material chambers, spray pistons can either be inserted individually or together into the spray material chambers or be pulled out of them, the spray pistons in the latter case advantageously being connected to one another by a suitable connecting element.
  • a characteristic feature of the invention provides that the add-on part is attached to the cartridge by means of a releasable snap lock.
  • the releasable snap lock can in principle be designed in any way, as long as it is ensured that when the snap lock engages, any increase due to elastic-plastic deformation of the cartridge and / or add-on part snaps into any recess.
  • the snap lock can be in the form of a sliding sleeve with an inner collar ring attached to the add-on part, which is pushed over an outer collar ring attached to the outside of the cartridge.
  • the snap lock is advantageously engaged with an audible snap-in noise, so that the snap-in can be acoustically controlled by the operator.
  • two hooks are formed on the attachment for fastening it to the cartridge by means of a snap lock, said hooks being diametrically opposite one another.
  • the hooks each grip undercut recesses assigned to them, each recess being arranged on a spring arm which is elastically loaded when deflected from its rest position. So that the hook engages with the undercut
  • the spring arms can in particular be designed as sections of an element (“locking clip”) fastened on the discharge-side end of the cartridge, the cartridge and locking clip first being able to be manufactured separately and then joined.
  • locking clip an element
  • conventional cartridges can be provided with the locking clip that carries the spring arms for the snap closure, so that cartridges that have already been manufactured can also be retrofitted with a snap closure.
  • this is in the form of (partial) rings encompassing the outlet openings of the cartridge, which are connected to one another by at least one web-like element.
  • the spring arms which have the undercutting recesses protrude symmetrically from the rings, in such a way that they can be converted into one another by rotating the cartridge about its longitudinal axis by 180 °.
  • the spring arms for the elastic deflection of the spring arms can be provided with pressure surfaces in the form of area-like widenings.
  • the pressure areas are advantageously essentially diametrically opposite one another, so that the snap closure can be released in a particularly simple and practical manner by simultaneously pressing the pressure areas, for example by bringing the pressure areas together with the thumb and forefinger of a user at the same time.
  • the attachment is designed such that it has no rotational symmetry with respect to the axes of rotation in the longitudinal axis of the cartridge.
  • the add-on part can have an oval or triangular cross-sectional area in this sense.
  • the attachment according to the invention can be a mixing tip, which receives the sprayed material of the sprayed material chambers ejected by the injection pistons under pressure through the outlet openings and releases them again in a mixed form.
  • the attachment according to the invention partly act as a closure cap for closing the outlet openings of the spray material chambers. Due to the easy application and removal of the closure cap made possible by the snap closure according to the invention, filled cartridges (possibly already used and still partially) can be conveniently stored at a specific location, for example a refrigerator, and then reused without the risk of contamination exist.
  • FIG. 1 is an exploded view of a delivery system according to the invention
  • FIG. 1 is an enlarged plan view of the locking clip of FIG. 1,
  • Fig. 3 is a perspective view of a closure cap.
  • the reference number 1 designates the cartridge of a double-barrel syringe.
  • the cartridge is provided with two spray material chambers, each of which opens into an outlet opening 2.
  • the reference number 3 designates a locking clip which is provided with spring arms, on which the undercut recesses are arranged as part of the snap lock mechanism.
  • the locking clip 3 is attached to the cartridge, in particular its outlet openings 2.
  • 1 shows a mixing tip, which in turn is composed of a distribution unit 4 and a mixing / dispensing unit 5.
  • the distributor unit 4 is provided with inlet openings 6 which, when the arrangement is assembled, enter the outlet openings 2 of the cartridge and take over the spray material which is expelled through the outlet openings 2 by inserting the injection pistons into the spray material chambers.
  • the mixing / dispensing unit 5 has a spiral 10 located inside the dispensing tip 11, which ensures that the sprayed material is mixed.
  • the dispensing tip 11 is provided with an opening 8 for dispensing the injection material.
  • Arranged on the distributor unit 4 are two diametrically opposed hooks 9 which, when the arrangement is assembled, come into engagement with the undercut recesses of the spring arms of the locking clip 3.
  • FIG. 2 shows an enlarged top view of the locking clip 3 from FIG. 1 in a position plugged onto the outlet openings 2 of the cartridge 1.
  • the locking clip 3 encompasses the outlet openings 2 of the cartridge 1 by means of partial rings 12, the partial rings 12 being connected to one another by a web-like connecting element 13.
  • the spring arms 14 protrude from the partial rings 12, in each case in the direction of the other partial ring.
  • the spring arms 14 can be converted into one another by 180 °.
  • the spring arms are elastically loaded along the directions indicated by the arrows.
  • the undercut recesses 15 are arranged on the spring arms 14, into which the hooks 9 of the mixing tip engage in the assembled state of the arrangement.
  • the spring arms must be deflected towards one another in an elastic manner.
  • the elastic spring force of the spring arms ensures that the snap connection is secured.
  • the spring arms 14 are above also provided with diametrically opposite pressure surfaces 16, by means of which sufficient deflection of the spring arms is effected perpendicularly to the axial direction of the cartridge, so that when the pressure surfaces are actuated simultaneously, the hooks 9 come out of engagement with the undercut recesses 15 and the Snap lock can be released.
  • closure cap 17 for the cartridge.
  • the closure cap 17 is provided with sack sleeves 18 which, when joined together with the cartridge 1, close the outlet openings 2 of the spray material chambers.
  • the closure cap 17 also has diametrically opposed hooks 19 which, when the closure cap is fastened to the cartridge, come into engagement with the undercut recesses 15 of the spring arms 14 of the locking clip 3.

Abstract

The invention relates to a dispensing system for fluid substances, comprising a syringe unit in the form of a cartridge with at least one injection material chamber (1). Said injection material chamber (1) is provided with an injection plunger and an add-on piece (5), fixed to the cartridge at the outlet end thereof, characterised in that the add-on piece (5) is fixed to the cartridge by means of a detachable clip lock (9, 3).

Description

Abgabesystem für fluide Substanzen Dispensing system for fluid substances
Die vorliegende Erfindung betrifft ein Abgabesystem 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 delivery system for fluid substances. In particular, it relates to a dispensing system which comprises a plunger syringe in the form of a cartridge with at least one spray material chamber, which is provided with a plunger, and an attachment part fastened to the cartridge at its end on the dispensing side.
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 Misch'spritze greift.Dispensing systems of this type are already known in the prior art. For example, a double-barrel plunger syringe is used, which comprises a cartridge consisting of two spray material chambers lying axially parallel next to one another with plungers guided therein, to which a mixing tip is attached. The attachment is made so far by simply plugging in or by a screw connection ( "luer-lock closure"), is provided in the syringe on the piston an internal or external thread, in which the complementary thereto, provided with a thread mixing 'engages syringe.
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. 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.However, the solutions known in the prior art for fastening add-on parts to the piston syringe have significant disadvantages. For example, plug connections are not a safe connection when using highly viscous fluids because they generally cannot withstand the higher piston pressure required here. Although this problem does not occur with the luer lock closures, there is a risk of contamination, especially with highly viscous fluids, when attaching and removing the add-on part by smearing the outlet openings of the cartridge. The object of the present invention is to overcome the disadvantages of the solutions known in the prior art for fastening an attachment to a piston syringe. According to the invention, 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 Spri zgutkammern eingeschoben oder aus diesen herausgezogen werden, wobei die Spritzkolben im letzteren Fall vorteilhaft durch ein geeignetes Verbindungselement miteinander verbunden sind.According to the invention, a delivery system for fluid substances is shown, which comprises a plunger syringe and an attachment attached to it. The plunger syringe comprises a cartridge with at least one litter chamber, which is provided with a plunger. If the cartridge has a plurality of spray material chambers, spray pistons can either be inserted individually or together into the spray material chambers or be pulled out of them, the spray pistons in the latter case advantageously being connected to one another by a suitable connecting element.
Ein charakteristisches Merkmal der Erfindung sieht vor, dass das Anbauteil mittels eines 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. 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 j eweils in ihnen zugewiesene hinterschneidende Vertiefungen, wobei j ede Vertiefung auf einem bei Auslenkung aus seiner Ruhelage elastisch belasteten Federarm angeordnet ist . Damit die Haken in Eingriff mit den hinterschneidendenA characteristic feature of the invention provides that the add-on part is attached to the cartridge by means of a releasable snap lock. The releasable snap lock can in principle be designed in any way, as long as it is ensured that when the snap lock engages, any increase due to elastic-plastic deformation of the cartridge and / or add-on part snaps into any recess. For example, the snap lock can be in the form of a sliding sleeve with an inner collar ring attached to the add-on part, which is pushed over an outer collar ring attached to the outside of the cartridge. The snap lock is advantageously engaged with an audible snap-in noise, so that the snap-in can be acoustically controlled by the operator. In an embodiment of the invention preferred according to the invention, two hooks are formed on the attachment for fastening it to the cartridge by means of a snap lock, said hooks being diametrically opposite one another. The hooks each grip undercut recesses assigned to them, each recess being arranged on a spring arm which is elastically loaded when deflected from its rest position. So that the hook engages with the undercut
Vertiefungen gelangen können, muss hierzu zunächst die elasti-Indentations, the elastic
» sehe 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 .»See spring force of the spring arms to be overcome. If the hooks are in engagement with the undercut recesses, the elastic spring force of the spring arms also ensures that the hooks are secured against loosening.
Die Federarme können insbesondere als Abschnitte eines auf dem abgabeseitigen Ende der Kartusche befestigten Elements ( "Rastklammer" ) ausgebildet sein, 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 can in particular be designed as sections of an element (“locking clip”) fastened on the discharge-side end of the cartridge, the cartridge and locking clip first being able to be manufactured separately and then joined. In an advantageous manner, conventional cartridges can be provided with the locking clip that carries the spring arms for the snap closure, so that cartridges that have already been manufactured can also be retrofitted with a snap closure.
Bei einer vorteilhaften, sehr einfachen Aus führungs form 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 . 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.In an advantageous, very simple embodiment of the locking clip, this is in the form of (partial) rings encompassing the outlet openings of the cartridge, which are connected to one another by at least one web-like element. The spring arms which have the undercutting recesses protrude symmetrically from the rings, in such a way that they can be converted into one another by rotating the cartridge about its longitudinal axis by 180 °. Furthermore, the spring arms for the elastic deflection of the spring arms can be provided 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 while deflecting the spring arms, so that the hooks disengage from the undercut depressions and the snap closure can be released. The pressure areas are advantageously essentially diametrically opposite one another, so that the snap closure can be released in a particularly simple and practical manner by simultaneously pressing the pressure areas, for example by bringing the pressure areas together with the thumb and forefinger of a user at the same time.
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 Anbautei- le 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 the axes of rotation in the longitudinal axis of the cartridge. For example, the add-on part can have an oval or triangular cross-sectional area in this sense. As a result, the attachment, especially when there are several spray material chambers, in a certain ("correct") manner, i. H. are placed on the cartridge in a specific assignment of spray material chambers to an inner structure of the add-on part. A possible "wrong" attachment of the add-on parts in the case of the rotationally symmetrical luer lock closures which are necessary in the prior art can thus 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 Anbau- teil 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 can be a mixing tip, which receives the sprayed material of the sprayed material chambers ejected by the injection pistons under pressure through the outlet openings and releases them again in a mixed form. Alternatively, the attachment according to the invention partly act as a closure cap for closing the outlet openings of the spray material chambers. Due to the easy application and removal of the closure cap made possible by the snap closure according to the invention, filled cartridges (possibly already used and still partially) can be conveniently stored at a specific location, for example a refrigerator, and then reused without the risk of contamination exist.
Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert, wobei Bezug auf die beigefügten Zeichnungen genommen wird. Es zeigenThe invention will now be explained in more detail using an exemplary embodiment, reference being made to the accompanying drawings. Show it
Fig. 1 eine Explosionsdarstellung eines erfindungsgemäßen Abgabesystems,1 is an exploded view of a delivery system according to the invention,
Fig. 2 eine vergrößerte Draufsicht, der Rastklammer von Fig. 1,2 is an enlarged plan view of the locking clip of FIG. 1,
Fig. 3 eine perspektivische Ansicht einer Verschlusskappe.Fig. 3 is a perspective view of a closure 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 Äustrittsöffnungen 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.1, which shows an exploded view of an exemplary embodiment of the delivery system according to the invention. The reference number 1 designates the cartridge of a double-barrel syringe. The cartridge is provided with two spray material chambers, each of which opens into an outlet opening 2. The reference number 3 designates a locking clip which is provided with spring arms, on which the undercut recesses are arranged as part of the snap lock mechanism. The locking clip 3 is attached to the cartridge, in particular its outlet openings 2. 1 shows a mixing tip, which in turn is composed of a distribution unit 4 and a mixing / dispensing unit 5. The distributor unit 4 is provided with inlet openings 6 which, when the arrangement is assembled, enter the outlet openings 2 of the cartridge and take over the spray material which is expelled through the outlet openings 2 by inserting the injection pistons into the spray material chambers. The mixing / dispensing unit 5 has a spiral 10 located inside the dispensing tip 11, which ensures that the sprayed material is mixed. The dispensing tip 11 is provided with an opening 8 for dispensing the injection material. Arranged on the distributor unit 4 are two diametrically opposed hooks 9 which, when the arrangement is assembled, come into engagement with the undercut recesses 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 top view of the locking clip 3 from FIG. 1 in a position plugged onto the outlet openings 2 of the cartridge 1. The locking clip 3 encompasses the outlet openings 2 of the cartridge 1 by means of partial rings 12, the partial rings 12 being connected to one another by a web-like connecting element 13. The spring arms 14 protrude from the partial rings 12, in each case in the direction of the other partial ring. When the cartridge 1 is rotated about its longitudinal axis, the spring arms 14 can be converted into one another by 180 °. The spring arms are elastically loaded along the directions indicated by the arrows. The undercut recesses 15 are arranged on the spring arms 14, into which the hooks 9 of the mixing tip engage in the assembled state of the arrangement. So that the hooks 9 can reach into the undercut recesses 15, the spring arms must be deflected towards one another in an elastic manner. In the engaged state, the elastic spring force of the spring arms ensures that the snap connection is secured. The spring arms 14 are above also provided with diametrically opposite pressure surfaces 16, by means of which sufficient deflection of the spring arms is effected perpendicularly to the axial direction of the cartridge, so that when the pressure surfaces are actuated simultaneously, the hooks 9 come out of engagement with the undercut recesses 15 and the Snap lock can be released.
Fig. 3 schließlich zeigt eine Verschlusskappe 17 für die Kar- tusche. Die Verschlusskappe 17 ist mit Sackhülsen 18 versehen, welche bei Zusammenfügen mit der Kartusche 1 die Austrittsöff- nungen 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. 3 finally shows a closure cap 17 for the cartridge. The closure cap 17 is provided with sack sleeves 18 which, when joined together with the cartridge 1, close the outlet openings 2 of the spray material chambers. The closure cap 17 also has diametrically opposed hooks 19 which, when the closure cap is fastened to the cartridge, come into engagement with the undercut recesses 15 of the spring arms 14 of the locking clip 3.

Claims

Ansprüche Expectations
1. Abgabesystem für fluide Substanzen, welches eine Kolbenspritze in Form einer Kartusche mit wenigstens einer Spritzgutkammer, welche Spritzgutkammer mit einem Spritzkolben versehen ist, und ein an der Kartusche an deren abgabeseitigem Ende befestigtes Anbauteil umfasst, dadurch gekennzeichnet, dass das Anbauteil mittels eines lösbaren Schnappverschlusses an der Kartusche befestigt ist.1. Dispensing system for fluid substances, which comprises a plunger syringe in the form of a cartridge with at least one spray material chamber, the spray material chamber is provided with a spray plunger, and an attachment part fastened to the cartridge at its end on the delivery side, characterized in that the attachment part by means of a releasable snap closure is attached to the cartridge.
2. Abgabesystem nach Anspruch 1, dadurch gekennzeichnet, dass die Kartusche wenigstens zwei achsparallel nebeneinanderliegende Spitzgutkammern mit separaten Austrittsöffnungen aufweist.2. Delivery system according to claim 1, characterized in that the cartridge has at least two axially parallel juxtaposed Spitzgutkammern with separate outlet openings.
3. Abgabesystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an dem Anbauteil zu dessen Befestigung an der Kartusche zwei im wesentlichen diametral gegenüberliegend angeordnete Haken ausgebildet sind, und dass an dem abgabeseitigen Ende der Kartusche zwei bei Auslenkung aus ihrer Ruhelage elastisch belastete Federarme ausgebildet sind, die jeweils mit einer einem Haken zugewiesenen hinterschneidenden Vertiefung versehen sind, wobei die Haken in die ihnen zugewiesenen hinterschneidenden Vertiefungen greifen.3. Dispensing system according to claim 1 or 2, characterized in that two substantially diametrically opposed hooks are formed on the attachment for fastening it to the cartridge, and that two elastically loaded spring arms are formed on the dispensing end of the cartridge when deflected from its rest position are each provided with an undercut recess assigned to a hook, the hooks engaging in the undercut recesses assigned to them.
4. Abgabesystem nach Anspruch 3, dadurch gekennzeichnet, dass die Federarme als Abschnitte eines auf dem abgabeseitigen Ende der Kartusche befestigten Elements ("Rastklammer") ausgebildet sind. 4. Dispensing system according to claim 3, characterized in that the spring arms are designed as sections of an element fastened to the dispensing end of the cartridge (“locking clip”).
5. Abgabesystem nach Anspruch 4, dadurch gekennzeichnet, dass die Rastklammer in Form von die Austrittsöffnungen der Kartusche umgreifenden und miteinander durch wenigstens ein stegartiges Element verbundenen (Teil-) Ringen, mit von den (Teil-) Ringen abragenden Federarmen, welche Federarme bei Drehung der Kartusche um deren Längsachse um 180° ineinander überführt werden können, vorliegt.5. Dispensing system according to claim 4, characterized in that the locking clip in the form of encompassing the outlet openings of the cartridge and connected to one another by at least one web-like element (partial) rings, with spring arms projecting from the (partial) rings, which spring arms upon rotation the cartridge can be transferred into one another around its longitudinal axis by 180 °.
6. Abgabesystem nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Federarme zur elastischen Auslenkung der Federarme mit Druckflächen in Form von flächenartigen Verbreiterungen versehen sind, wobei durch Ausüben einer ausreichenden Druckkraft auf die Druckflächen die Haken aus dem Eingriff mit den hinterschneidenden Vertiefungen gelangen.6. Dispensing system according to one of claims 3 to 5, characterized in that the spring arms for the elastic deflection of the spring arms are provided with pressure surfaces in the form of area-like widenings, the hooks from the engagement with the undercutting recesses being exerted by a sufficient pressure force on the pressure surfaces reach.
7. Abgabesystem nach Anspruch 6, dadurch gekennzeichnet, dass die Druckflächen einander im wesentlichen diametral gegenüberliegen.7. Dispensing system according to claim 6, characterized in that the pressure surfaces are substantially diametrically opposite one another.
8. Abgabesystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Anbauteil eine Mischspitze ist, welche das von den Spritzkolben unter Druck durch die Austrittsöffnungen ausgestoßene Spritzgut der Spritzgutkammern aufnimmt und in gemischter Form abgibt8. Dispensing system according to one of the preceding claims, characterized in that the add-on part is a mixing tip which receives the sprayed material of the sprayed material chambers ejected by the injection pistons under pressure through the outlet openings and dispenses them in mixed form
9. Abgabesystem nach einem der vorhergehenden Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Anbauteil eine Verschlusskappe zum Verschließen der Austrittsöffnungen der Spritzgutkammern ist. 9. Dispensing system according to one of the preceding claims 1 to 7, characterized in that the attachment is a closure cap for closing the outlet openings of the spray material chambers.
10. Abgabesystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Anbauteil keine Rotationssymmetrie um Rotationsachsen in Längsrichtung der Kartusche aufweist.10. Dispensing system according to one of the preceding claims, characterized in that the attachment has no rotational symmetry about axes of rotation in the longitudinal direction of the cartridge.
11. Abgabesystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schnappverschluss mit einem vernehmbaren Geräusch einrastet. 11. Dispensing system according to one of the preceding claims, characterized in that the snap lock engages 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
DE10233051 2002-07-19
DE10233051A DE10233051A1 (en) 2002-07-19 2002-07-19 Dispensing system for fluid substances
PCT/EP2003/004092 WO2004009249A1 (en) 2002-07-19 2003-04-17 Dispensing system for fluid substances

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

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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)
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WO (1) WO2004009249A1 (en)

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AU2003224102A1 (en) 2004-02-09
EP1523385B1 (en) 2007-08-01
US20050230422A1 (en) 2005-10-20
DE50307822D1 (en) 2007-09-13
ES2287470T3 (en) 2007-12-16
AR040572A1 (en) 2005-04-13
JP2005536331A (en) 2005-12-02
US7316330B2 (en) 2008-01-08
CA2493069A1 (en) 2004-01-29
PT1523385E (en) 2007-11-13
DE10233051A1 (en) 2004-02-05
WO2004009249A1 (en) 2004-01-29
ATE368522T1 (en) 2007-08-15

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