EP1881872B1 - Needle valve pump for dispensing liquid product - Google Patents
Needle valve pump for dispensing liquid product Download PDFInfo
- Publication number
- EP1881872B1 EP1881872B1 EP20060743777 EP06743777A EP1881872B1 EP 1881872 B1 EP1881872 B1 EP 1881872B1 EP 20060743777 EP20060743777 EP 20060743777 EP 06743777 A EP06743777 A EP 06743777A EP 1881872 B1 EP1881872 B1 EP 1881872B1
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- EP
- European Patent Office
- Prior art keywords
- chamber
- pump
- cylinder
- product
- pump according
- 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.)
- Not-in-force
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1074—Springs located outside pump chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85978—With pump
Definitions
- the invention relates to a pump for dispensing liquid product, or semi liquid, designed in particular for closing a container containing the product to be dispensed.
- the pump according to the invention is particularly, but not exclusively, designed to be used in the pharmaceutical field.
- the pump according to the invention is of the type called "needle”, that is to say having in the upper part a free mounted needle in displacement between a closed position where it closes the end opening of the pump, and prevents product delivery, and an open position where it passes liquid through said end opening.
- pumps which, in a conventional way, comprise a first cylinder forming a pump chamber, which communicates with a gripping tube via a non-return valve, and in which a piston is slidably mounted. hollow. They also comprise a second cylinder, which communicates with the first cylinder, and in which is slidably mounted a second piston constituted by a needle, able to interrupt the communication between the first cylinder and a dispensing nozzle. They finally comprise elastic means, spring-type working in compression, which act on the needle tending to maintain the latter in a closed position where said communication is interrupted.
- An example of such a pump is disclosed in the document FR 2 652 389 according to the preamble of claim 1. The principle of operation of such pumps is as follows: when moving the first piston, the liquid in the first cylinder is discharged into the second cylinder in which the pressure s' Student. The second piston tends to sink into its cylinder by compressing the spring.
- the second piston moves by driving the valve which is connected thereto, so that the cylinders are placed in communication with the dispensing nozzle.
- Such pumps do not meet the current requirements for quality standards, because, for example, that the liquid product can be polluted by contact with the metal return spring of the needle in the closed position after dispensing the liquid product.
- these pumps are not designed to allow the pump to decline in several models that can deliver the product with different volumes of volumes. Indeed, we can not change the volume of the chamber without changing the dimensions of the pump. Also, it is necessary to provide packaging specific to each pump size, which leads to significant production costs.
- the invention aims to overcome these disadvantages.
- the dispensing head comprises means ensuring the passage of the liquid between the metering chamber and a second chamber formed at the end of the dispensing head, without the liquid being in contact with the return means.
- the second cylinder has a compartment in which are housed the elastic return means and is isolated from the second chamber by sealing means, the second chamber communicating with the orifice of the dispensing head.
- the passage means consist of at least one passage channel formed at least partially in a wall of the cylinder, one end of the channel opening into the metering chamber and the other end of the channel opening into the second chamber.
- the pump in such a way that the second chamber has a volume equal to a dose of product.
- This embodiment is however only an alternative embodiment of the invention.
- a pump having a volume smaller than that of a dose may also correspond to the pump according to the invention.
- the second chamber is a chemical or bacteriological treatment chamber of a dose of product.
- the return means consist of a spring working in compression.
- the pump according to the invention comprises means for assembling and centering the return spring with respect to said needle.
- the compartment of the closure means are constituted by a radial ring projecting on an outer wall of a needle base.
- the pump comprises a conduit for checking the seal between the compartment and the second chamber, the duct communicating with the compartment being formed through the wall of the cylinder, and being capable of being connected to pneumatic measuring means.
- it comprises a return spring of the dispensing head in the rest position.
- the dispensing head comprises an inner skirt and an outer skirt, between which the second compression spring is placed, the second cylinder being surrounded by the inner skirt. of the delivery head so that the liquid is not in contact with the second spring.
- the chamber has a volume preferably comprised between 30 and 250 ⁇ L.
- the pump according to the invention comprises support means and attachment to a product container to be dispensed.
- the pump according to the invention which will now be described is particularly suitable for use in delivering a liquid or semi-liquid pharmaceutical product in the form of nasal sprays.
- a pump 1 In a first step, the embodiment of a pump 1 according to the invention will be described with reference to the figure 1 .
- a second step reference will be made to Figures 2 to 7 to describe the different steps relating to the delivery of a dose of product.
- the pump 1 comprises a needle 2 consisting of a base 21 surmounted by a rod 22, and a dispensing head 4 manually movable on a pump body 10, between a rest position and a point of product punctual delivery.
- It also comprises means 3 of support and attachment to a product container to be dispensed.
- the head 4 comprises a first cylinder 41 forming a dosing chamber 7 of the pump, which communicates with a gripping tube 42 via a non-return valve 43, a piston 44 being slidably mounted in said first cylinder 41.
- the head 4 also comprises a second cylinder 5 in which the needle 2, forming an exhaust valve, is slidably mounted, as well as elastic return means 6 of the needle 2 in the closed position of an orifice 45 through which the product liquid is expelled.
- the dispensing head 4 comprises means ensuring the passage of the liquid between said metering chamber 7 and a second chamber 8 which is formed at the end of the dispensing head 4, without the liquid being in contact with the return means 6.
- passage means consist of at least one passage channel 46 which is formed at least partially in a wall 53 of the cylinder 5 so that one end of the channel 46 opens into the metering chamber 7 and the other end of the channel opens into the second chamber 8.
- the second cylinder 5 has a compartment 51 in which are housed the elastic return means 6 and which is isolated from the second chamber 8 by sealing means 52, the second chamber 8 communicating with the orifice 45 of the dispensing head 4.
- the volume of the second chamber 8 is smaller than that of the metering chamber 7.
- the second chamber 8 has a volume equal to a dose of product, and comprises means for chemical or bacteriological treatment of said dose, for example by contact with agents dispersed in the wall of said chamber.
- this embodiment has not been illustrated.
- the section ratio between the metering chamber 7 and the second chamber 8 is between 2 and 10. As part of this embodiment (illustrated in figure 1 ), the ratio is 8.
- the return means of the needle in its closed position of the orifice 45 consist of a spring 6 working in compression.
- the pump described here comprises means for assembling and centering the return spring 6 with respect to the needle 2.
- centering and assembling means consist of a nipple 23 projecting from the base 21, around which the spring 6 engages.
- the sealing means of said compartment 51 are constituted by a radial ring 52 projecting on an outer wall of the base 21 of the needle 2.
- the pump 1 which is shown in the appended figures, comprises a duct 55 for checking the tightness between the compartment 51 and the second chamber 8.
- the conduit 55 communicates with the compartment 51 being formed through the wall of the cylinder 5 and being capable of being connected to pneumatic measuring means.
- These pneumatic measuring means may be, for example a manometer, which controls the internal pressure in the compartment 51: if the seal between the compartment 51 and the chamber 8 is not perfect, an air leakage can occur between the ring 52 and the inner face of the wall 53. This air leakage can be revealed through the manometer which then indicates a pressure drop.
- the duct 55 has a dual function since it allows the air contained in the compartment 51 to escape when the spring 6 is compressed, as shown in FIG. figure 4 in particular by an exit arrow S2.
- the dispensing head 4 then comprises an inner skirt 47 and an outer skirt 48 ( figure 1 ), between which the second spring is placed.
- the second cylinder 5 is surrounded by the inner skirt 47 of the delivery head so that the liquid is not in contact with the second spring 9 which could pollute or contaminate it.
- the sprays of liquid product are usually done in doses whose volumes are between 30 and 250 ⁇ L and it is therefore this volume range that has been chosen for the metering chamber 7.
- this pump 1 makes it possible to change the volume of the metering chamber without having to modify the packaging or packaging of the bottle provided with this pump.
- the Figures 2 to 7 represent the pump 1 for cutting at different times of a spraying of a dose of liquid product, between the moment when a user begins to press the dispensing head 4, and the moment when the dispensing head 4 is back in his rest position.
- the figure 2 represents the pump 1 in its initial state, before the delivery of a dose of product, and after being primed, that is to say after having been actuated several times to expel the air contained in the dosing chamber, to replace it with a dose of product to be delivered.
- the figure 7 represents the pump 1 in its final state, after the delivery of a dose of product.
- the pump 1 represented on the figure 2 is identical to that of the figure 7 . Also, and therefore, it is understood that the pump can be actuated again to deliver a second dose of product as soon as the return of the spray head to its initial position.
- the figure 3 illustrates the pump 1 when a user begins to exert a pressure P (illustrated by an arrow on the figure 3 ) on the dispensing head 4.
- the compressed product in the metering chamber 7 then exerts itself a pressure on the liquid contained in the passage 46, and indirectly on the liquid product contained in the second chamber 8.
- the base 21 of the needle being secured to the rod 22 of the needle, the latter moves away from the orifice 45 by releasing a passage through which the liquid product is ejected towards the outside of the pump, as indicated by the arrow S1.
- the figure 5 shows the pump 1 with its dispensing head 4 pressed at the maximum of its stroke by the user, to its extreme low position.
- the piston 44 When the dispensing head 4 is in the extreme low position, the piston 44 is in its highest position in the first cylinder 41, and the metering chamber 7 is penetrated by the end of the piston 44.
- the piston 44 no longer exerts pressure on the liquid contained in the chamber or in the passage 46.
- liquid product contained in the second chamber 8 no longer exerts pressure on the base 21 of the needle 2.
- the spring 6, which works in compression, will relax and remount the needle 2 until the end of the rod 22 comes to close the orifice 45 of the dispensing head 4. The distribution of the dose liquid ends well.
- the dispensing head 4 being integral with the cylinder 41 comprising the metering chamber, drives the cylinder 41 back to its initial position.
- the dispensing head continues to rise under the action of the spring 9 until reaching its initial high position represented by figure 7 and the metering chamber 7 continues to fill under the effect of the depression which is created in the chamber (suction phenomenon).
- the pump 1 can again be actuated by the user to deliver a new dose of product.
- the pump 1 according to the invention is made to limit the expenses related to the packaging and packaging of the bottle on which it is mounted.
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- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Reciprocating Pumps (AREA)
- Closures For Containers (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
L'invention concerne une pompe pour la distribution de produit liquide, ou semi liquide, conçue notamment pour fermer un récipient contenant le produit à distribuer.The invention relates to a pump for dispensing liquid product, or semi liquid, designed in particular for closing a container containing the product to be dispensed.
La pompe selon l'invention est particulièrement, mais non exclusivement, conçue pour être mise en oeuvre dans le domaine pharmaceutique.The pump according to the invention is particularly, but not exclusively, designed to be used in the pharmaceutical field.
La pompe selon l'invention est du type dit « à pointeau », c'est-à-dire comportant en partie haute un pointeau monté libre en déplacement entre une position de fermeture où il obture l'ouverture d'extrémité de la pompe, et empêche toute délivrance de produit, et une position d'ouverture où il laisse passer le liquide à travers ladite ouverture d'extrémité.The pump according to the invention is of the type called "needle", that is to say having in the upper part a free mounted needle in displacement between a closed position where it closes the end opening of the pump, and prevents product delivery, and an open position where it passes liquid through said end opening.
Il existe déjà de telles pompes qui, de manière en soit classique, comportent un premier cylindre formant chambre de pompe, qui communique avec un tube de prise par l'intermédiaire d'un clapet anti-retour, et dans lequel est monté coulissant un piston creux. Elles comportent également un second cylindre, qui communique avec le premier cylindre, et dans lequel est monté coulissant un second piston constitué par un pointeau, propre à interrompre la communication entre le premier cylindre et une buse de distribution. Elles comportent enfin des moyens élastiques, du type ressort travaillant en compression, qui agissent sur le pointeau en tendant à maintenir ce dernier dans une position d'obturation où ladite communication est interrompue. Un exemple de telle pompe est divulguée dans le document
Quand la pression du liquide atteint une valeur suffisante pour équilibrer cette action, le second piston se déplace en entraînant le clapet qui lui est relié, de sorte que les cylindres sont mis en communication avec la buse de distribution.When the pressure of the liquid reaches a value sufficient to balance this action, the second piston moves by driving the valve which is connected thereto, so that the cylinders are placed in communication with the dispensing nozzle.
De telles pompes ne répondent pas aux exigences actuelles en matière de normes de qualité, du fait, par exemple, que le produit liquide peut être pollué par contact avec le ressort métallique de rappel du pointeau en position d'obturation après distribution du produit liquide.Such pumps do not meet the current requirements for quality standards, because, for example, that the liquid product can be polluted by contact with the metal return spring of the needle in the closed position after dispensing the liquid product.
De plus, les doses de produit liquide délivrées ne sont souvent pas précises, ce qui limite l'utilisation de ces pompes à la délivrance de certains produits.In addition, the doses of liquid product delivered are often not accurate, which limits the use of these pumps to the delivery of certain products.
Par ailleurs, ces pompes ne sont pas conçues pour permettre de décliner la pompe en plusieurs modèles susceptibles de délivrer le produit avec des doses de volumes différents. En effet, on ne peut pas changer le volume de la chambre sans changer les dimensions de la pompe. Aussi, il est nécessaire de prévoir des conditionnements propres à chaque taille de pompe, ce qui entraîne des coûts de productions non négligeables.Moreover, these pumps are not designed to allow the pump to decline in several models that can deliver the product with different volumes of volumes. Indeed, we can not change the volume of the chamber without changing the dimensions of the pump. Also, it is necessary to provide packaging specific to each pump size, which leads to significant production costs.
L'invention vise à pallier ces inconvénients.The invention aims to overcome these disadvantages.
Elle concerne une pompe pour la distribution de produit liquide, ou semi liquide, destinée à être mise en oeuvre notamment dans le domaine pharmaceutique ou cosmétique. La pompe comporte un pointeau constitué d'une base surmontée d'une tige, et une tête de distribution déplaçable manuellement sur un corps de pompe, entre une position de repos et une position de délivrance ponctuelle du produit. La tête comprend :
- un premier cylindre formant chambre de dosage de la pompe, qui communique avec un tube de prise par l'intermédiaire d'un clapet anti-retour, un piston étant monté coulissant dans le premier cylindre ;
- un second cylindre dans lequel le pointeau est monté coulissant, ledit pointeau formant clapet d'échappement ;
- des moyens de rappel élastiques du pointeau en position d'obturation d'un orifice.
- a first metering chamber cylinder of the pump, which communicates with a metering tube through a check valve, a piston being slidably mounted in the first cylinder;
- a second cylinder in which the needle is slidably mounted, said needle forming an exhaust valve;
- resilient return means of the needle in the closed position of an orifice.
Selon l'invention, la tête de distribution comporte des moyens assurant le passage du liquide entre la chambre de dosage et une seconde chambre ménagée à l'extrémité de la tête de distribution, sans que le liquide ne soit en contact avec les moyens de rappel. De plus, le second cylindre présente un compartiment dans lequel sont logés les moyens de rappel élastique et il est isolé de la seconde chambre par des moyens de fermeture étanche, la seconde chambre communiquant avec l'orifice de la tête de distribution.According to the invention, the dispensing head comprises means ensuring the passage of the liquid between the metering chamber and a second chamber formed at the end of the dispensing head, without the liquid being in contact with the return means. . In addition, the second cylinder has a compartment in which are housed the elastic return means and is isolated from the second chamber by sealing means, the second chamber communicating with the orifice of the dispensing head.
Selon un premier mode de réalisation de la pompe selon l'invention, les moyens de passage consistent en au moins un canal de passage ménagé au moins partiellement dans une paroi du cylindre, l'une des extrémités du canal débouchant dans la chambre de dosage et l'autre extrémité du canal débouchant dans la seconde chambre.According to a first embodiment of the pump according to the invention, the passage means consist of at least one passage channel formed at least partially in a wall of the cylinder, one end of the channel opening into the metering chamber and the other end of the channel opening into the second chamber.
Dans le cadre d'un mode de réalisation, on peut prévoir de réaliser la pompe de telle manière que la seconde chambre présente un volume égal à une dose de produit. Ce mode de réalisation n'est toutefois qu'une variante de réalisation de l'invention. Aussi, une pompe présentant un volume inférieur à celui d'une dose peut également correspondre à la pompe selon l'invention.In the context of one embodiment, it is possible to provide the pump in such a way that the second chamber has a volume equal to a dose of product. This embodiment is however only an alternative embodiment of the invention. Also, a pump having a volume smaller than that of a dose may also correspond to the pump according to the invention.
De même, il pourrait être prévu que la seconde chambre soit une chambre de traitement chimique ou bactériologique d'une dose de produit.Similarly, it could be expected that the second chamber is a chemical or bacteriological treatment chamber of a dose of product.
Selon une autre variante de réalisation, les moyens de rappel consistent en un ressort travaillant en compression.According to another embodiment, the return means consist of a spring working in compression.
De manière avantageuse, la pompe selon l'invention comporte des moyens d'assemblage et de centrage de ce ressort de rappel par rapport audit pointeau.Advantageously, the pump according to the invention comprises means for assembling and centering the return spring with respect to said needle.
Selon encore une autre variante de réalisation de la pompe selon l'invention, les moyens de fermeture étanche du compartiment sont constitués par un anneau radial saillant sur une paroi externe d'une base de pointeau.According to yet another alternative embodiment of the pump according to the invention, the compartment of the closure means are constituted by a radial ring projecting on an outer wall of a needle base.
Selon encore une autre variante de réalisation, la pompe comporte un conduit pour contrôler l'étanchéité entre le compartiment et la seconde chambre, le conduit communiquant avec le compartiment en étant ménagé à travers la paroi du cylindre, et étant susceptible d'être raccordé à des moyens de mesure pneumatique.According to yet another alternative embodiment, the pump comprises a conduit for checking the seal between the compartment and the second chamber, the duct communicating with the compartment being formed through the wall of the cylinder, and being capable of being connected to pneumatic measuring means.
Selon encore une autre variante de réalisation, elle comporte un ressort de rappel de la tête de distribution en position de repos.According to yet another alternative embodiment, it comprises a return spring of the dispensing head in the rest position.
De manière avantageuse, dans le cadre de ce dernier mode de réalisation, il est prévu que la tête de distribution comporte une jupe interne et une jupe externe, entre lesquelles le second ressort de compression est placé, le second cylindre étant entouré de la jupe interne de la tête de délivrance de sorte que le liquide ne soit pas en contact avec le second ressort.Advantageously, in the context of this latter embodiment, it is provided that the dispensing head comprises an inner skirt and an outer skirt, between which the second compression spring is placed, the second cylinder being surrounded by the inner skirt. of the delivery head so that the liquid is not in contact with the second spring.
La chambre présente un volume compris préférentiellement entre 30 et 250 µL.The chamber has a volume preferably comprised between 30 and 250 μL.
De manière avantageuse, on prévoit également que la pompe selon l'invention comporte des moyens de support et de fixation sur un récipient de produit à distribuer.Advantageously, it is also provided that the pump according to the invention comprises support means and attachment to a product container to be dispensed.
D'autres objets et avantages de l'invention apparaîtront au cours de la description qui suit, faite en référence aux dessins annexés, dans lesquels :
- la
figure 1 illustre, en vue de coupe, une pompe suivant un premier mode de réalisation selon l'invention ; - et les
figures 2 à 7 montrent, en vue de coupe, la pompe illustrée sur lafigure 1 à différentes étapes de son actionnement, ainsi que le parcours du produit liquide dans ladite pompe à chacune de ces étapes.
- the
figure 1 illustrates, in sectional view, a pump according to a first embodiment according to the invention; - and the
Figures 2 to 7 show, in sectional view, the pump illustrated on thefigure 1 at different stages of its actuation, and the course of the liquid product in said pump at each of these steps.
La pompe selon l'invention qui va maintenant être décrite est particulièrement adaptée pour être utilisée pour délivrer un produit liquide, ou semi liquide, pharmaceutique sous forme de pulvérisations nasales.The pump according to the invention which will now be described is particularly suitable for use in delivering a liquid or semi-liquid pharmaceutical product in the form of nasal sprays.
Il devra toutefois être entendu qu'une pompe selon l'invention pourrait présenter des formes différentes, et qu'il pourrait s'appliquer à d'autres domaines que celui de la pharmacie. De plus, les chiffres qui seront évoqués dans le cadre de cet exemple ne seront aucunement limitatifs.It should be understood, however, that a pump according to the invention could have different shapes, and that it could apply to other areas than the pharmacy. In addition, the figures that will be discussed in the context of this example will not be limiting.
Dans un premier temps, le mode de réalisation d'une pompe 1 selon l'invention sera décrit en faisant référence à la
Comme le montre la
Elle comporte également des moyens 3 de support et de fixation sur un récipient de produit à distribuer.It also comprises
De manière en soit classique, la tête 4 comprend un premier cylindre 41 formant chambre de dosage 7 de la pompe, qui communique avec un tube de prise 42 par l'intermédiaire d'un clapet anti-retour 43, un piston 44 étant monté coulissant dans ledit premier cylindre 41.In a conventional manner, the
La tête 4 comprend également un second cylindre 5 dans lequel le pointeau 2, formant clapet d'échappement, est monté coulissant, ainsi que des moyens de rappel élastique 6 du pointeau 2 en position d'obturation d'un orifice 45 par lequel le produit liquide est expulsé.The
Conformément à l'invention, la tête de distribution 4 comporte des moyens assurant le passage du liquide entre ladite chambre de dosage 7 et une seconde chambre 8 qui est ménagée à l'extrémité de la tête de distribution 4, sans que le liquide ne soit en contact avec les moyens de rappel 6.According to the invention, the dispensing
Ces moyens de passage consistent en au moins un canal de passage 46 qui est ménagé au moins partiellement dans une paroi 53 du cylindre 5 de telle manière que l'une des extrémités du canal 46 débouche dans la chambre de dosage 7 et que l'autre extrémité du canal débouche dans la seconde chambre 8.These passage means consist of at least one
Par ailleurs, le second cylindre 5 présente un compartiment 51 dans lequel sont logés les moyens de rappel élastique 6 et qui est isolé de la seconde chambre 8 par des moyens de fermeture étanche 52, la seconde chambre 8 communiquant avec l'orifice 45 de la tête de distribution 4.Furthermore, the
Dans le cadre de ce mode de réalisation, le volume de la seconde chambre 8 est inférieur à celui de la chambre de dosage 7.In the context of this embodiment, the volume of the
Il pourrait être prévu que la seconde chambre 8 présente un volume égal à une dose de produit, et comporte des moyens de traitement chimique ou bactériologique de ladite dose, par exemple par contact avec des agents dispersés dans la paroi de ladite chambre. Toutefois, afin de faciliter la lecture des figures, ce mode de réalisation n'a pas été illustré.It could be expected that the
Pour permettre au pointeau 2 de dégager l'orifice 45, et ainsi permettre la délivrance du produit, on prévoit que le rapport de section entre la chambre de dosage 7 et la seconde chambre 8 soit compris entre 2 et 10. Dans le cadre de ce mode de réalisation (illustré en
Comme on peut le voir sur la
Conformément à des caractéristiques avantageuses, la pompe décrite ici comporte des moyens d'assemblage et de centrage du ressort de rappel 6 par rapport au pointeau 2.According to advantageous characteristics, the pump described here comprises means for assembling and centering the
On comprend au vu de la
Par ailleurs, les moyens de fermeture étanche dudit compartiment 51 sont constitués par un anneau radial 52 saillant sur une paroi externe de la base 21 du pointeau 2.Moreover, the sealing means of said
La pompe 1 selon l'invention qui est représentée sur les figures annexées comporte un conduit 55 pour contrôler l'étanchéité entre le compartiment 51 et la seconde chambre 8.The
Le conduit 55 communique avec le compartiment 51 en étant ménagé à travers la paroi du cylindre 5 et étant susceptible d'être raccordé à des moyens de mesure pneumatique.The
Ces moyens de mesure pneumatique peuvent être, par exemple un manomètre, qui contrôle la pression interne dans le compartiment 51 : si l'étanchéité entre le compartiment 51 et la chambre 8 n'est pas parfaite, une fuite d'air peut survenir entre l'anneau 52 et la face interne de la paroi 53. Cette fuite d'air peut être révélée grâce au manomètre qui indique alors une chute de pression.These pneumatic measuring means may be, for example a manometer, which controls the internal pressure in the compartment 51: if the seal between the
Par ailleurs, le conduit 55 a une double fonction puisqu'il permet d'échappement de l'air contenu dans le compartiment 51 lorsque le ressort 6 est comprimé, comme illustré sur la
Par ailleurs, il est prévu d'équiper la pompe 1 avec un second ressort 9 travaillant en compression et assurant le rappel élastique de la tête de distribution 4 en position de repos.Furthermore, it is intended to equip the
La tête de distribution 4 comporte alors une jupe interne 47 et une jupe externe 48 (
Comme illustré, le second cylindre 5 est entouré de la jupe interne 47 de la tête de délivrance de sorte que le liquide ne soit pas en contact avec ce second ressort 9 qui pourrait le polluer ou le contaminer.As illustrated, the
Les pulvérisations de produit liquide se font usuellement par doses dont les volumes sont compris entre 30 et 250 µL et c'est donc cette plage de volume qui a été choisie pour la chambre de dosage 7.The sprays of liquid product are usually done in doses whose volumes are between 30 and 250 μL and it is therefore this volume range that has been chosen for the
La conception même de cette pompe 1 permet de pouvoir changer le volume de la chambre de dosage sans avoir à modifier les emballages ou conditionnements du flacon muni de cette pompe.The very design of this
En effet, au regard de la
La pompe 1 selon l'invention illustrée sur la
Les
La
La
On remarquera que la pompe 1 représentée sur la
La
Sous l'action de cette pression P, le piston 44 comprime le produit contenu dans la chambre de dosage 7.Under the action of this pressure P, the
Le produit comprimé dans la chambre de dosage 7 exerce alors lui-même une pression sur le liquide contenu dans le passage 46, et indirectement sur le produit liquide contenu dans la seconde chambre 8.The compressed product in the
Comme on peut le comprendre de la
Aussi, sous l'effet de cette pression, la base 21 du pointeau 2 comprime le ressort 6 dans le compartiment 51.Also, under the effect of this pressure, the
La base 21 du pointeau étant solidaire de la tige 22 du pointeau, cette dernière s'écarte de l'orifice 45 en libérant un passage par lequel le produit liquide est éjecté vers l'extérieur de la pompe, comme indiqué par la flèche S1.The
Au même moment, de par la présence de moyens d'étanchéité 52/54 entre le compartiment 51 et la seconde chambre 8, l'air contenu dans le compartiment 52 est poussé dans le conduit 55, pénètre dans l'espace compris entre la jupe interne 47 et la jupe externe 48 de la tête de distribution, et est expulsé hors de la pompe suivant la flèche S2.At the same time, by the presence of sealing means 52/54 between the
La
Quand la tête de distribution 4 est en position extrême basse, le piston 44 se trouve dans sa position la plus haute dans le premier cylindre 41, et la chambre de dosage 7 est pénétrée par l'extrémité du piston 44.When the dispensing
Aussi, au moment où la tête 4 se trouve en position enfoncée, le piston 44 n'exerce plus de pression sur le liquide contenu dans la chambre ou dans le passage 46.Also, when the
De plus, le produit liquide contenu dans la seconde chambre 8 n'exerce plus de pression sur la base 21 du pointeau 2.In addition, the liquid product contained in the
Aussi, le ressort 6, qui travaille en compression, va se détendre et faire remontrer le pointeau 2 jusqu'à ce que l'extrémité de la tige 22 vienne obturer l'orifice 45 de la tête de distribution 4. La distribution de la dose de liquide se termine ainsi.Also, the
Lorsque l'utilisateur arrête d'exercer une pression sur la tête de distribution 4, comme indiqué en
La tête de distribution 4, étant solidaire du cylindre 41 comprenant la chambre de dosage, entraîne le cylindre 41 en remontant jusqu'à sa position initiale.The dispensing
Il se crée alors une dépression dans la chambre de dosage 7, qui aspire alors le produit liquide contenu dans le tube de prise 42.There is then created a depression in the
La tête de distribution continue de remonter sous l'action du ressort 9 jusqu'à atteindre sa position haute initiale représentée en
Une fois que la tête de distribution 4 a atteint sa position haute, la pompe 1 peut de nouveau être actionnée par l'utilisateur pour délivrer une nouvelle dose de produit.Once the dispensing
On distingue de la description qui précède les caractéristiques propres à la pompe, qui permettent au produit de ne jamais être en contact avec des agents contaminants, notamment liés aux moyens de rappel élastique du pointeau en position d'obturation, et aux moyens de rappel élastique de la tête de délivrance.The foregoing description distinguishes the characteristics peculiar to the pump, which enable the product to never come into contact with contaminating agents, in particular linked to the elastic return means of the needle in the closed position, and to the elastic return means. of the rescue head.
Aussi, on comprend comment la pompe 1 selon l'invention est réalisée pour limiter les dépenses liées à l'emballage et au conditionnement du flacon sur lequel elle st montée.Also, it is understood how the
Il devra toutefois être entendu que la pompe selon l'invention n'est pas limitée à celle qui vient d'être décrite et qui est illustrée sur les
Claims (10)
- Pump (1) for dispensing a liquid or semi-liquid product, designed to be used, in particular, in the pharmaceutical or cosmetic field, said pump (1) comprising a needle valve (2) made up of a base (21) topped by a rod (22), and a dispensing head (4) manually movable on a pump body (5) between an inactive position and a punctual product-dispensing position, said head (4) comprising:- a first cylinder (41) forming a dosage chamber (7) of the pump, which communicates with an intake tube (42) by means of a check valve (43), a piston (44) being slidingly mounted is said first cylinder (41);- a second cylinder (5) in which said needle valve (2) is slidingly mounted, forming an exhaust valve;- elastic means (6, 9) for respectively returning said needle valve (2) to the position in which it blocks an orifice (45) and the dispensing head (4) to the inactive position,
characterised in that said dispensing head (4) comprises means (46) for allowing the liquid to pass between said dosage chamber (7) and a second chamber (8) provided at the end of the dispensing head (4) and communicating with the orifice (45) of the dispensing head (4), said second cylinder (5) comprising a compartment (51) in which said elastic return means (6) of the needle valve (2) are housed and which is isolated from said second chamber (8) by watertight sealing means (52) and in that said dispensing head comprises an inner skirt (47) surrounding said second cylinder (5) and an outer skirt (48), between which said return means (9) of the head (4) are placed, so that said liquid is not in contact with said return means (6, 9). - Pump according to claim 1, characterised in that said passage means (46) consist of at least one passage channel (46) made at least partially in one wall (53) of the cylinder (5), one of the ends of said channel (46) opening into said dosage chamber (7) and the other end of the channel opening into the second chamber (8).
- Pump according to any one of the preceding claims, characterised in that said second chamber has a volume equal to one dose of product.
- Pump according to any one of the preceding claims, characterised in that said second chamber (8) is a chamber for chemical or biological treatment of a dose of product.
- Pump according to any one of the preceding claims, characterised in that the return means (6) consist of a compression spring.
- Pump according to claim 5, characterised in that it comprises means (23) for assembling and centring said return spring (6) in relation to said needle valve (2).
- Pump according to any one of the preceding claims, characterised in that said watertight sealing means (52) of said compartment (51) are formed by a projecting radial ring (52) on an external wall of the base (21) of the needle valve (2).
- Pump according to any one of the preceding claims, characterised in that it comprises a conduit (55) for checking the seal between said compartment (51) and said second chamber (8), said conduit (55) communicating with said compartment (51) by being made through the wall of said cylinder (5) and being capable of being connected to pneumatic measurement means.
- Pump according to any one of the preceding claims, characterised in that said chamber (7) has a volume comprised between 30 and 250 µl.
- Pump according to any one of the preceding claims, characterised in that it comprises means (3) for support and attachment on a container of a product to be dispensed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0551308A FR2885887B1 (en) | 2005-05-20 | 2005-05-20 | POINTE PUMP FOR THE DISTRIBUTION OF LIQUID PRODUCT |
PCT/FR2006/001029 WO2006125880A1 (en) | 2005-05-20 | 2006-05-09 | Needle valve pump for dispensing liquid product |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1881872A1 EP1881872A1 (en) | 2008-01-30 |
EP1881872B1 true EP1881872B1 (en) | 2011-07-27 |
Family
ID=35520726
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20060743777 Not-in-force EP1881872B1 (en) | 2005-05-20 | 2006-05-09 | Needle valve pump for dispensing liquid product |
Country Status (8)
Country | Link |
---|---|
US (1) | US7780044B2 (en) |
EP (1) | EP1881872B1 (en) |
JP (1) | JP5011280B2 (en) |
CN (1) | CN101180133B (en) |
AT (1) | ATE517696T1 (en) |
FR (1) | FR2885887B1 (en) |
HK (1) | HK1112676A1 (en) |
WO (1) | WO2006125880A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4994775B2 (en) | 2006-10-12 | 2012-08-08 | 日本コヴィディエン株式会社 | Needle point protector |
WO2008145714A2 (en) * | 2007-05-30 | 2008-12-04 | Glaxo Group Limited | Fluid dispenser |
FR2917651B1 (en) * | 2007-06-20 | 2010-09-17 | Rexam Dispensing Sys | PUMP FOR DISTRIBUTION OF AN IMPROVED LIQUID IMPROVED PRODUCT |
FR2933679B1 (en) * | 2008-07-10 | 2010-09-03 | Valois Sas | DEVICE FOR DISPENSING FLUID PRODUCT. |
JP5413895B2 (en) * | 2008-10-31 | 2014-02-12 | 株式会社吉野工業所 | Pump pressing head and pressing head type discharge pump |
EP2218515B1 (en) * | 2009-02-06 | 2011-11-23 | Rexam Healthcare La Verpillière | Spray dispenser comprising a one-way membrane valve |
FR2941933B1 (en) | 2009-02-06 | 2016-02-12 | Rexam Pharma La Verpilliere | DEVICE FOR DELIVERING A PRODUCT COMPRISING A PUMP, COMPRISING A FIXED PART AND A MOBILE PART. |
EP2517751B8 (en) | 2011-04-27 | 2018-02-28 | Kpr U.S., Llc | Safety IV catheter assemblies |
WO2013048975A1 (en) | 2011-09-26 | 2013-04-04 | Covidien Lp | Safety catheter |
US8715250B2 (en) | 2011-09-26 | 2014-05-06 | Covidien Lp | Safety catheter and needle assembly |
US8834422B2 (en) | 2011-10-14 | 2014-09-16 | Covidien Lp | Vascular access assembly and safety device |
DE102013113791A1 (en) * | 2013-12-10 | 2015-06-11 | Rpc Bramlage Gmbh | donor |
CN104058163B (en) * | 2014-05-07 | 2016-04-20 | 正庄发展有限公司 | Press type external spring perfume sprayer and round trip pressing method thereof |
DE102016014898A1 (en) | 2016-12-12 | 2018-06-14 | Aptar Dortmund Gmbh | Pump and dispenser |
CN107157766A (en) * | 2017-06-27 | 2017-09-15 | 深圳市柯林健康医疗有限公司 | One kind is without the sealed Desflurane doser of O-ring |
WO2019182745A1 (en) | 2018-03-19 | 2019-09-26 | Bryn Pharma, LLC | Epinephrine spray formulations |
CN109592203B (en) * | 2018-11-19 | 2020-02-14 | 深圳博纳精密给药***股份有限公司 | Sterile spray pump |
Family Cites Families (17)
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US1127624A (en) * | 1914-05-29 | 1915-02-09 | Grover C Holder | Alloy. |
US2631393A (en) * | 1946-07-19 | 1953-03-17 | Lionel S Hetherington | Illuminated tap |
US2694607A (en) * | 1949-07-13 | 1954-11-16 | Int Harvester Co | Connecting rod and piston assembly |
US2652389A (en) * | 1950-08-18 | 1953-09-15 | Du Pont | Polyamide containing beta carbonamido-alpha-aminopropionic acid units |
JPS5232425Y2 (en) * | 1972-05-31 | 1977-07-23 | ||
JPS5444249Y2 (en) * | 1974-06-14 | 1979-12-19 | ||
FR2593243B1 (en) * | 1986-01-17 | 1990-02-16 | Aerosol Inventions Dev | MANUALLY CONTROLLED PUMP FOR USE IN ALL POSITIONS |
FR2631393B1 (en) * | 1988-05-10 | 1993-09-17 | Lindal Verpackungstech Gmbh | PRE-PRESSURE PUMP FOR DIFFUSION OF A LIQUID |
IT1227547B (en) * | 1988-12-09 | 1991-04-15 | Coster Tecnologie Speciali Spa | PERFECTED PRECOMPRESSION PUMP, FOR THE DISPENSING OF LIQUID PRODUCTS FROM CONTAINERS |
JP2813889B2 (en) * | 1989-03-22 | 1998-10-22 | バロワ | Piston pump dispenser |
FR2652389B1 (en) * | 1989-09-26 | 1992-12-04 | Debard Andre | IMPROVEMENT IN PRE-PRESSURE PUMPS FOR THE DISTRIBUTION OF A LIQUID. |
FR2694607B1 (en) * | 1992-08-10 | 1994-10-07 | Step Soc Tech Pulverisation | Improvement in the assembly of a pump in a tank. |
DE19739990A1 (en) * | 1997-09-11 | 1999-03-18 | Pfeiffer Erich Gmbh & Co Kg | Media Donor |
FR2805183B1 (en) * | 2000-02-23 | 2002-12-27 | Oreal | PUMP COMPRISING A SPRING-FORMING MEMBRANE AND CONTAINER THUS EQUIPPED |
JP2002066401A (en) * | 2000-06-16 | 2002-03-05 | Katsutoshi Masuda | Fluid delivery pump |
FR2811383B1 (en) * | 2000-07-07 | 2002-12-13 | Valois Sa | FLUID PRODUCT DISPENSING PUMP |
US7201296B2 (en) * | 2001-09-21 | 2007-04-10 | Ing. Erich Pfeiffer Gmbh | Dosing device with a pumping device |
-
2005
- 2005-05-20 FR FR0551308A patent/FR2885887B1/en not_active Expired - Fee Related
-
2006
- 2006-05-09 WO PCT/FR2006/001029 patent/WO2006125880A1/en not_active Application Discontinuation
- 2006-05-09 CN CN2006800175480A patent/CN101180133B/en not_active Expired - Fee Related
- 2006-05-09 EP EP20060743777 patent/EP1881872B1/en not_active Not-in-force
- 2006-05-09 JP JP2008511745A patent/JP5011280B2/en not_active Expired - Fee Related
- 2006-05-09 AT AT06743777T patent/ATE517696T1/en not_active IP Right Cessation
-
2007
- 2007-11-20 US US11/942,806 patent/US7780044B2/en not_active Expired - Fee Related
-
2008
- 2008-07-15 HK HK08107777A patent/HK1112676A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN101180133B (en) | 2010-05-19 |
FR2885887B1 (en) | 2010-11-05 |
EP1881872A1 (en) | 2008-01-30 |
US20080115845A1 (en) | 2008-05-22 |
WO2006125880A1 (en) | 2006-11-30 |
HK1112676A1 (en) | 2008-09-12 |
JP5011280B2 (en) | 2012-08-29 |
FR2885887A1 (en) | 2006-11-24 |
ATE517696T1 (en) | 2011-08-15 |
US7780044B2 (en) | 2010-08-24 |
CN101180133A (en) | 2008-05-14 |
JP2008540008A (en) | 2008-11-20 |
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