EP2216099B1 - Device for dispensing a product comprising a pump, comprising a fixed part and a mobile part - Google Patents

Device for dispensing a product comprising a pump, comprising a fixed part and a mobile part Download PDF

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Publication number
EP2216099B1
EP2216099B1 EP10152648.1A EP10152648A EP2216099B1 EP 2216099 B1 EP2216099 B1 EP 2216099B1 EP 10152648 A EP10152648 A EP 10152648A EP 2216099 B1 EP2216099 B1 EP 2216099B1
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EP
European Patent Office
Prior art keywords
abutment
movable
pump
resilient
product
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
Application number
EP10152648.1A
Other languages
German (de)
French (fr)
Other versions
EP2216099A1 (en
Inventor
Xavier Donnette
Julien Brand
Gaëtan Painchaud
Sylvain Lanzi
François NICOLLE
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.)
Nemera la Verpilliere SAS
Original Assignee
Nemera la Verpilliere SAS
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Publication date
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Publication of EP2216099A1 publication Critical patent/EP2216099A1/en
Application granted granted Critical
Publication of EP2216099B1 publication Critical patent/EP2216099B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B11/1004—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
    • B05B11/1001—Piston pumps
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
    • 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
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position
    • 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

Definitions

  • the present invention relates to the technical field of product delivery, liquid, semi-liquid, viscous or gaseous, especially in the medical field.
  • a device used to deliver the product may comprise a pump, for example for nasal sprays, or other types of dispensing means, for example an ophthalmic liquid dispensing valve, a powder inhaler device, or a dispensing device. syringe protection.
  • the device comprises a pump body and a dispensing head, mounted movably on the pump body between a rest position and an activated position, in order to deliver a predetermined dose of product.
  • a dispensing head mounted movably on the pump body between a rest position and an activated position, in order to deliver a predetermined dose of product.
  • the user presses the dispensing head to take its activated position and thus delivers a dose of product.
  • US 5,307,953 describes a device according to the preamble of claim 1.
  • the dose of product delivered by the device may depend on the effort exerted by the user on the mobile part of the device, here composed of the dispensing head. Indeed, depending on the force exerted by the user, incomplete doses can be delivered. The fact that the dose delivered is not constant is a problem, which can have significant consequences in the case where the product is a drug. Moreover, in addition to the question of the quantity of product delivered, the quality of the spray may also depend on the effort exerted by the user, particularly the particle size of the particles or droplets, the angle and the density of the spray, which can generate sprays of poor quality. For example, when the dose is delivered with a stop during the run, the spray may take the form of a jet while a mist spray is expected.
  • the present invention aims in particular to provide a device ensuring the delivery of regular doses of product, from the point of view of quantity and / or quality.
  • the subject of the invention is a device for delivering a product, comprising a first part, called a fixed part, and a second part movable with respect to the first part between a rest position and an activated position, this second part being said moving part, the device further comprising means for abutting the movable part relative to the fixed part, to be force-passed so that the movable part passes from its rest position to its activated position .
  • These means of abutment thus constitute a hard point of activation, preferably located at the very beginning of the stroke of the moving part.
  • the mobile part and / or the fixed part may be composed of one or more separate parts.
  • the movable portion delimits, with the fixed part, a metering chamber, defining a metering volume, corresponding to the difference between the volume of the chamber in the high position and the volume of the chamber in the low position.
  • This dosing volume determines the dose of product delivered at each activation of the device. It should be noted that the dosing volume does not necessarily correspond to the volume of the metering chamber, since the volume of the chamber in the low position is not necessarily zero.
  • the abutment means can be arranged on any device intended to deliver a predetermined dose of product and in which the delivery requires a trigger with a certain force on the part of the user.
  • the device may be a pump device, an ophthalmic product delivery device, a powder inhaler device, or a device for protecting a syringe.
  • a device for delivering a liquid, semi-liquid, viscous or gaseous product comprises a pump 10, used for example for pharmaceutical nasal sprays.
  • This pump 10 is intended to be mounted on a reservoir (not shown) and is generally surmounted by a dispensing nozzle (not shown), on which the user presses.
  • the pump 10 comprises a first portion 12, said fixed portion, and a second portion 14, said moving portion, movable relative to the fixed portion 12 between a rest position, shown in FIG. figure 2 , and an activated position, represented on the figure 1 .
  • the rest position corresponds to a so-called high position
  • the activated position to a so-called low position.
  • the fixed part 12 comprises a pump body 16, carrying a gripping tube 18, a piston 20 and a guide sleeve 22.
  • the tube 18 is connected to the reservoir, in order to draw product intended to pass through the pump.
  • the fixed part 12 comprises a fastening collar 24, for crimping the pump 10 on the tank. It is understood that the pump can also be mounted on the tank by screwing or snap.
  • the piston 20 comprises a support 26, fixedly mounted in the lower part of the pump body 16, traversed by a feed channel 28, arranged in the extension of the tube 18, and opening onto one or more feed orifices provided on the upper end 32 of the support.
  • the support 26 is also capped on its upper end 32 by a deformable membrane 30, fixedly mounted on the support 26.
  • the membrane 30 is provided with an upper transverse wall forming a non-return valve with the upper end 32 of the support 26, and a cylindrical skirt having one or more sealing lips 34.
  • the moving part 14 of the pump is also called a dispensing head.
  • it comprises a first cylinder 36, slidably mounted inside the pump body 16, and delimiting, with the piston 20, a metering chamber 38.
  • the piston 20 can slide sealed with respect to the cylinder 36, thanks to the sealing lips 34, so as to vary the volume of the metering chamber 38.
  • the metering chamber 38 defines a metering volume, corresponding to the difference between the volume of the chamber 38 in the high position and the volume of the chamber 38 in the low position, called “dead volume". This dosing volume determines the dose of product delivered at each activation of the device.
  • the metering chamber 38 in the low position has a volume (dead volume) substantially zero, because the pump is in the activated position, the dose of product contained in the metering chamber has just been expelled. We understand that this dead volume is not necessarily zero.
  • the chamber 38 has a volume substantially equal to the volume of a dose of product.
  • the dispensing head 14 further comprises a second cylinder 40, possibly made in one piece with the first cylinder 36.
  • the cylinders 36 and 40 can be made of several parts.
  • a needle 42 is slidably mounted within this second cylinder 40, between a rest position and an activated position, under the action of first return means 43, composed of a compression spring.
  • the needle 42 is provided with a base 42a, sealingly mounted in the second cylinder 40, of a rod 42b, configured to be able to close, in the rest position of the pump, an orifice 44 formed on the lower end of the second cylinder 40, and an end 42c, projecting slightly inside the metering chamber 38 when the needle 42 is in the activated position.
  • This end 42c is configured to press the membrane 30 when the movable portion 14 is in the activated position, so as to ensure the opening of the orifice 44 in the priming phase of the device (so as to push the air of the metering chamber 38 towards the top of the device) and / or to close the supply orifice of the support 26.
  • the dispensing head 14 also comprises a support 46, fixedly mounted on the first cylinder 36.
  • the support 46 defines a distribution chamber 48.
  • the support 46 could be made in one piece with the elements 36 and / or 40. It is generally on the support 46 that the dispensing nozzle of the device is mounted, the chamber 48 being connected to a dispensing nozzle provided on this nozzle. Note that the chamber 48 is not necessarily present on the support 46, it can provide only a connection of the support 46 and / or the cylinder 40 with the dispensing tip.
  • the support 46 of the head 14 is provided with an inner skirt 50 and an outer skirt 52, between which second return means 54 are housed.
  • the return means 54 are composed of a spring in compression, bearing on the one hand on the support 46, between the two skirts 50, 52, on the other hand on the fixed part 12, at the bottom of the sleeve 22. at the spring 54, the head 14, movable relative to the fixed part 12 between a rest position and an activated position, is held in the up position, as shown in FIG. figure 1 .
  • the support 46 Inside the inner skirt 50, the support 46 also has a bearing seat of the first spring 43.
  • the support 46 further comprises means ensuring the passage of the liquid from the metering chamber 38 to the tip of distribution, more precisely to the distribution chamber 48, arranged in particular between the second cylinder 40 and the inner skirt 50, preferably so as to ensure the passage of liquid without the liquid being in contact with the return means 43 and 54 .
  • the pump 10 also comprises means 56, 58 for abutment of the movable part 14 relative to the fixed part 12, to be forced past in order for the part 14 to move from its rest position to its activated position.
  • the means 56, 58 are shown in more detail on the figure 3 . In this example, they comprise three stops 56, carried by the moving part 14, and three stops 58 carried by the fixed part 12.
  • the stops 58 are each mounted on an elastic portion 60 of the fixed part 12, plus
  • the resilient portion 60 is an elastic tab having an end 62 formed integrally with the fixed portion 12, and a free end 64.
  • the elastic tab 60 is deformable between an abutment configuration, shown in FIG. figure 3 , and an erase configuration.
  • the free end 64 of the tab 60 is located vertically from the end 62.
  • the stop 58 is moved to the right by a distance X represented on the figure 3 . This displacement is effected by elastic deformation of the lug 60, the abutment 56 having a chamfer 66, forming a ramp with a complementary chamfer 68 of the abutment 58 when the mobile part is moved downwards, according to the arrow 70.
  • the means 56, 58 of abutment are permanent, and therefore not fusible, that is to say that they are intended to be forcefully crossed at each activation of the pump by the user. They are configured in such a way that the force required to overcome them in force is greater than the force required to deliver a dose of product. Moreover, it will be noted that the means 56, 58 are punctual.
  • the pump 10 further comprises means for reinforcing the elastic portion 60, pressing on the zone 62 of the portion 60.
  • the reinforcing means comprise a belt 72, carried by the fastening collar 24, pressing on a part of the tabs 60 to increase their resistance before deforming. This increases the minimum effort that the user must exercise.
  • the pump 10 Before the user delivers a dose of product, the pump 10 is in the rest position, or high position, represented on the figure 2 .
  • the pump In this position, the pump is already primed, so the metering chamber 38 has a certain volume, said volume in the high position, and is filled with product, the product contained in this chamber 38 comprising the dose of product to be dispensed.
  • the rest position corresponds to a position in which the first cylinder 36, so the whole of the moving part 14, is shifted upwards relative to the fixed part 12, in particular with respect to the pump body 16.
  • the movable portion 14 of the pump 10 When the user wishes to deliver a dose of product, he presses the movable portion 14 of the pump 10, possibly by pressing the dispensing tip. It thus exerts on the mobile part 14 a force schematized by the arrow 70 on the figure 3 , in order to activate the pump 10. Under the action of this support, the movable portion 14 begins to descend, until the abutment means 56, 58 are in contact and thus exert a resistance to the support of the user. Following this abutment means 56, 58, two solutions are possible.
  • the force exerted by the user is sufficient for the chamfers 66, 68 to move the end 64 of the distance X, that is to say for the means 56, 58 to be force-crossed.
  • the user has exerted a sufficiently strong support that will be able to activate the pump and deliver a satisfactory dose of product, as explained below.
  • the movable portion 14 continues its downward stroke, in accordance with the arrow 70.
  • the support 46 moving downwards, the first 36 and second 40 cylinders are also moved to the bottom, which has the effect of reducing the volume of the metering chamber 38. More specifically, the liquid contained in this chamber exerts an upward pressure on the needle 42, so that the rod 42b is moved and n ' closes the orifice 44. The liquid can thus escape from the chamber 38. Once the liquid has passed through the orifice 44, it flows between the second cylinder 40 and the inner skirt 50, and then passes into the distribution chamber 48, to be delivered out of the dispensing nozzle.
  • the liquid exerts a pressure on the needle 42 to raise it.
  • the end 42c of the needle in the low position presses the membrane 30 so as to press against the upper end 32 of the support 26, and thus close the or the supply ports.
  • the dosing chamber 38 reaches its volume in the low position, here substantially zero, that is to say once the dose of product has been dispensed, the user releases his support on the mobile part 14.
  • the needle 42 is again compressed against the lower wall of the cylinder 40, so as to close the orifice 44.
  • the movable portion 14 rises towards the high, in a direction opposite to the arrow 70.
  • the second cylinder 36 slides relative to the piston 20 in the direction opposite to the arrow 70, so that the metering chamber 38 increases in volume, so as to create a vacuum and suck the product through the grip tube 18.
  • the movable portion 14 moves upward to the initial rest position. In this position, the metering chamber 38 is again filled with product, having an identical volume in the upper position, to the one it had at the beginning, and thus allowing to deliver another dose, of volume identical to that coming from 'to be delivered.
  • the abutment means 56, 58 may take other forms than that illustrated on the Figures 1 to 3 .
  • the stop 58 is carried by a deformable tab 60, but the stop 56 is also carried by a deformable tab 74, carried by the outer skirt 52 of the support 46.
  • the deformable tab or tabs 60 may be arranged on the movable part 14 alone.
  • the elastic portion comprises a tab 60 'having two opposite ends 62', 64 ', each end 62', 64 'being fixedly mounted on the fixed part 12, more precisely on the guide sleeve 22. According to this embodiment, it is the middle part of the leg 60 'which deforms when the means 56, 58 are crossed in force. It is understood that such a configuration of the tab 60 'ensures a relatively high resistance to the passage of force means 56, 58.
  • the stop 58 is slidably mounted relative to the fixed part 12, more precisely with respect to the sleeve 22.
  • This stop 58 is movable between an erasing position and an abutment position, illustrated on FIG. figure 6 .
  • This displacement is exerted by return means pressing on the abutment 58, for example a spring or an elastic arm exerting on the stop 58 a force represented by the reference 76.
  • the stop 58 could possibly be slidably mounted relative to the moving part. 14.
  • a spring can press a stop 58 mounted, not sliding relative to the fixed portion 12, but directly integrated on the fixed portion 12.
  • This portion 60 is deformable between an abutment configuration and an erase configuration, being recalled in its abutment configuration by return means similar to those of the figure 6 .
  • One of the advantages of this variant lies in the fact that the stop is made directly in the fixed part or the moving part, and therefore does not require the assembly of an additional specific piece.
  • the device described is not limited to the examples described above.
  • the means 56, 58 of abutment can be provided on other parts of the fixed part 12 and the movable part 14. It could possibly be envisaged that these means are provided between the pump body 16 and the top the second cylinder 36, or between the tip mounted on the movable portion 14 and the sleeve 22.
  • the fact of providing the means 56, 58 respectively on the support 46 and the sleeve 22 is particularly satisfactory, because these means of implementation stop are arranged in an area not requiring sealing, the product does not flow in this area.
  • the means 56, 58 thus arranged are sufficiently far from the action of the fingers of the user, which reduces the risk of malfunction.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)

Description

La présente invention concerne le domaine technique de la délivrance de produit, liquide, semi-liquide, visqueux ou gazeux, notamment dans le domaine médical. Un dispositif utilisé pour délivrer le produit peut comprendre une pompe, par exemple pour des pulvérisations nasales, ou d'autres types de moyens de distribution, par exemple une valve de distribution de liquide ophtalmique, un dispositif inhalateur de poudre, ou encore un dispositif de protection de seringues.The present invention relates to the technical field of product delivery, liquid, semi-liquid, viscous or gaseous, especially in the medical field. A device used to deliver the product may comprise a pump, for example for nasal sprays, or other types of dispensing means, for example an ophthalmic liquid dispensing valve, a powder inhaler device, or a dispensing device. syringe protection.

Selon un exemple de dispositif comprenant une pompe, décrit dans le document FR 2 885 887 , le dispositif comprend un corps de pompe et une tête de distribution, montée mobile sur le corps de pompe entre une position de repos et une position activée, afin de délivrer une dose prédéterminée de produit. Lorsque l'utilisateur souhaite utiliser le dispositif, il appuie sur la tête de distribution pour qu'elle prenne sa position activée et délivre ainsi une dose de produit. Le document US 5,307,953 décrit un dispositif selon le préambule de la revendication 1.According to an example of a device comprising a pump, described in the document FR 2,885,887 , the device comprises a pump body and a dispensing head, mounted movably on the pump body between a rest position and an activated position, in order to deliver a predetermined dose of product. When the user wishes to use the device, it presses the dispensing head to take its activated position and thus delivers a dose of product. The document US 5,307,953 describes a device according to the preamble of claim 1.

Il se trouve que la dose de produit délivrée par le dispositif peut dépendre de l'effort exercé par l'utilisateur sur la partie mobile du dispositif, composée ici de la tête de distribution. En effet, selon la force exercée par l'utilisateur, des doses incomplètes peuvent être délivrées. Le fait que la dose délivrée ne soit pas constante est un problème, pouvant avoir des conséquences non négligeables dans le cas où le produit est un médicament. Par ailleurs, outre la question de la quantité de produit délivré, la qualité du spray peut également dépendre de l'effort exercé par l'utilisateur, notamment la granulométrie des particules ou gouttelettes, l'angle et la densité du spray, ce qui peut générer des sprays de mauvaise qualité. Par exemple, lorsque la dose est délivrée avec un arrêt pendant la course, le spray peut prendre la forme d'un jet alors qu'une pulvérisation en brouillard est attendue.It turns out that the dose of product delivered by the device may depend on the effort exerted by the user on the mobile part of the device, here composed of the dispensing head. Indeed, depending on the force exerted by the user, incomplete doses can be delivered. The fact that the dose delivered is not constant is a problem, which can have significant consequences in the case where the product is a drug. Moreover, in addition to the question of the quantity of product delivered, the quality of the spray may also depend on the effort exerted by the user, particularly the particle size of the particles or droplets, the angle and the density of the spray, which can generate sprays of poor quality. For example, when the dose is delivered with a stop during the run, the spray may take the form of a jet while a mist spray is expected.

La présente invention vise notamment à fournir un dispositif assurant la délivrance de doses régulières de produit, du point de vue de la quantité et/ou de la qualité.The present invention aims in particular to provide a device ensuring the delivery of regular doses of product, from the point of view of quantity and / or quality.

A cet effet, l'invention a pour objet un dispositif pour la délivrance d'un produit, comprenant une première partie, dite partie fixe, et une seconde partie mobile par rapport à la première partie entre une position de repos et une position activée, cette seconde partie étant dite partie mobile, le dispositif comprenant en outre des moyens de mise en butée de la partie mobile par rapport à la partie fixe, devant être franchis en force pour que la partie mobile passe de sa position de repos à sa position activée.For this purpose, the subject of the invention is a device for delivering a product, comprising a first part, called a fixed part, and a second part movable with respect to the first part between a rest position and an activated position, this second part being said moving part, the device further comprising means for abutting the movable part relative to the fixed part, to be force-passed so that the movable part passes from its rest position to its activated position .

Ces moyens de mise en butée constituent ainsi un point dur d'activation, situé de préférence au tout début de la course de la partie mobile. En prévoyant de tels moyens, on garantit que l'utilisateur exerce un effort minimal sur le dispositif de délivrance, à savoir un effort suffisant pour délivrer l'intégralité d'une dose prédéfinie de produit et/ou pour délivrer un spray conforme à des caractéristiques attendues, par exemple avec une certaine granulométrie des gouttelettes. Ainsi un utilisateur exerçant un effort insuffisant sur la partie mobile, plutôt que de délivrer une dose incomplète (comme c'est le cas avec un dispositif traditionnel), est empêché de délivrer du produit. Il est donc incité à appuyer sur la partie mobile, en exerçant une force plus importante, suffisante pour franchir les moyens de butée, donc pour délivrer la dose complète. Il en résulte que la dose délivrée par le dispositif est régulière, ou reproductible, donc indépendante de l'utilisateur.These means of abutment thus constitute a hard point of activation, preferably located at the very beginning of the stroke of the moving part. By providing such means, it is ensured that the user exerts a minimum effort on the delivery device, namely a sufficient effort to deliver the entire predefined dose of product and / or to deliver a spray that conforms to certain characteristics. expected, for example with a certain particle size of the droplets. Thus a user exerting insufficient effort on the moving part, rather than delivering an incomplete dose (as is the case with a traditional device), is prevented from delivering the product. It is therefore urged to press the moving part, exerting a greater force, sufficient to cross the stop means, so to deliver the full dose. As a result, the dose delivered by the device is regular, or reproducible, therefore independent of the user.

On comprend que la partie mobile et/ou la partie fixe peuvent être composées d'une ou plusieurs pièces distinctes. Généralement, la partie mobile délimite, avec la partie fixe, une chambre de dosage, définissant un volume de dosage, correspondant à la différence entre le volume de la chambre en position haute et le volume de la chambre en position basse. Ce volume de dosage détermine la dose de produit délivré à chaque activation du dispositif. On notera que le volume de dosage ne correspond pas forcément au volume de la chambre de dosage, puisque le volume de la chambre en position basse n'est pas forcément nul.It is understood that the mobile part and / or the fixed part may be composed of one or more separate parts. Generally, the movable portion delimits, with the fixed part, a metering chamber, defining a metering volume, corresponding to the difference between the volume of the chamber in the high position and the volume of the chamber in the low position. This dosing volume determines the dose of product delivered at each activation of the device. It should be noted that the dosing volume does not necessarily correspond to the volume of the metering chamber, since the volume of the chamber in the low position is not necessarily zero.

On comprend par ailleurs que les moyens de mise en butée peuvent être agencés sur tout dispositif destiné à délivrer une dose prédéterminée de produit et dans lequel la délivrance nécessite un déclenchement avec une certaine force de la part de l'utilisateur. En particulier, le dispositif peut être un dispositif avec pompe, un dispositif de délivrance de produit ophtalmique, un dispositif inhalateur de poudre, ou encore un dispositif de protection d'une seringue.It is furthermore understood that the abutment means can be arranged on any device intended to deliver a predetermined dose of product and in which the delivery requires a trigger with a certain force on the part of the user. In particular, the device may be a pump device, an ophthalmic product delivery device, a powder inhaler device, or a device for protecting a syringe.

Le dispositif décrit ci-dessus peut en outre comporter l'une ou plusieurs des caractéristiques suivantes :

  • Les moyens de mise en butée sont permanents, destinés à être franchis en force à chaque activation du dispositif par un utilisateur.
  • Les moyens de mise en butée sont ponctuels, c'est-à-dire que leur action est relativement courte par rapport à la course de la partie mobile. Ainsi, le franchissement des moyens de mise en butée est suivi d'un relâchement qui provoque un déplacement rapide de la partie mobile, ce qui permet une activation satisfaisante du dispositif.
  • Les moyens de mise en butée sont configurés de telle sorte que la force nécessaire pour les franchir en force est supérieure à la force nécessaire pour que la partie mobile aille en fin de course. En d'autres termes, la force permettant de franchir les moyens de mise en butée oblige la partie mobile à franchir toute sa course en une seule fois, ce qui assure la délivrance d'une dose satisfaisante en quantité, en qualité et en reproductibilité.
  • Les moyens de mise en butée comprennent une butée portée par la partie mobile et une butée portée par la partie fixe, au moins l'une de ces butées étant montée sur une portion élastique de la partie fixe et/ou de la partie mobile, déformable entre une configuration de butée et une configuration d'effacement, la portion élastique étant de préférence une patte élastique.
  • Le dispositif comporte des moyens de renforcement de la portion élastique, par exemple une pièce appuyant sur une zone de la portion élastique. Ces moyens de renforcement, ou moyens de rigidification, permettent d'augmenter la résistance de la portion élastique, donc l'effort à fournir pour lui faire prendre sa position d'effacement. Ainsi, alors qu'une seule patte élastique pourrait s'effacer suite à un effort relativement faible, les moyens de renforcement peuvent maintenir la portion élastique pour qu'elle reste en configuration de butée lorsque l'effort n'est pas suffisant pour délivrer la dose complète de produit.
  • La portion élastique comprend une patte présentant deux extrémités opposées, les deux extrémités étant montées fixes sur la partie fixe, ou montées fixes sur la partie mobile. Ainsi, autant la patte élastique peut avoir une de ses extrémités montée libre par rapport à la partie fixe ou mobile, autant la patte élastique peut avoir ses deux extrémités solidaires de la partie fixe, ou mobile, du dispositif. Dans ce deuxième cas, c'est la portion médiane de la patte, disposée entre les deux extrémités fixes, qui se déforme pour prendre la configuration d'effacement. Il en résulte que la patte élastique présente une grande résistance avant de prendre sa position d'effacement et requiert une force relativement conséquente de la part de l'utilisateur pour activer le dispositif.
  • Les moyens de mise en butée comprennent une butée, montée coulissante par rapport à la partie fixe ou par rapport à la partie mobile, déplaçable entre une position d'effacement et une position de butée, sous l'action de moyens de rappels appuyant sur cette butée, par exemple sous l'action d'un ressort ou d'un bras élastique. Ainsi, les moyens de mise en butée sont franchis en force, non pas à la suite d'une déformation élastique de la partie mobile ou de la partie fixe, mais à la suite de la déformation de moyens de rappel permettant à la butée de coulisser, par exemple à la suite de la compression d'un ressort. On peut ainsi offrir une plus grande résistance aux moyens de butée, pour garantir que la force suffisante est exercée par l'utilisateur. On obtient un dispositif délivrant des doses particulièrement reproductibles, quel que soit l'utilisateur.
  • Le dispositif comprend une pompe, la partie fixe comprenant un corps de pompe et la partie mobile comprenant une tête de distribution. On fournit ainsi une pompe dont l'activation est indépendante de l'utilisateur, sans pour autant modifier de façon conséquente sa structure. Par exemple, il pourrait être suffisant de modifier seulement deux des parois d'une pompe traditionnelle pour y incorporer les moyens de mise en butée. On notera que cette pompe assure de façon simple la délivrance de doses constantes tout en répondant à l'exigence de compacité d'une pompe. Un corps de pompe correspond généralement à l'ensemble des parties de la pompe montées fixes sur le réservoir du dispositif, et la tête de distribution à l'ensemble des parties montées mobiles par rapport à ce corps de pompe.
The device described above may further include one or more of the following features:
  • The means of abutment are permanent, intended to be crossed in force at each activation of the device by a user.
  • The means of abutment are punctual, that is to say that their action is relatively short compared to the stroke of the movable part. Thus, the crossing of the abutment means is followed by a release which causes a rapid movement of the moving part, which allows a satisfactory activation of the device.
  • The abutment means are configured such that the force required to overcome them in force is greater than the force required for the movable part to travel at the end of the stroke. In other words, the force to cross the means of abutment forces the moving part to cross its entire stroke at once, which ensures the delivery of a satisfactory dose in quantity, quality and reproducibility.
  • The abutment means comprise an abutment carried by the movable part and an abutment carried by the fixed part, at least one of these abutments being mounted on an elastic portion of the fixed part and / or the mobile part, deformable. between a stop configuration and an erase configuration, the elastic portion preferably being an elastic tab.
  • The device comprises means for reinforcing the elastic portion, for example a piece pressing on an area of the elastic portion. These reinforcing means, or stiffening means, allow to increase the resistance of the elastic portion, so the effort required to make him take his position of erasure. Thus, while only one elastic tab could be erased due to a relatively small force, the reinforcement means can maintain the elastic portion so that it remains in abutment configuration when the effort is not sufficient to deliver the full dose of product.
  • The elastic portion comprises a tab having two opposite ends, the two ends being fixedly mounted on the fixed part, or fixedly mounted on the movable part. Thus, both the elastic tab may have one of its ends freely mounted relative to the fixed or movable part, as the elastic tab may have its two ends integral with the fixed part, or mobile, of the device. In this second case, it is the middle portion of the tab, disposed between the two fixed ends, which deforms to take the erase configuration. As a result, the elastic tab has a high resistance before taking its erase position and requires a relatively substantial force on the part of the user to activate the device.
  • The abutment means comprise a stop, slidably mounted relative to the fixed part or relative to the movable part, movable between an erasure position and an abutment position, under the action of recall means pressing on this stop, for example under the action of a spring or an elastic arm. Thus, the abutment means are force-crossed, not as a result of an elastic deformation of the movable part or the fixed part, but following the deformation of return means allowing the stop sliding, for example following the compression of a spring. It is thus possible to offer greater resistance to the stop means, to ensure that the sufficient force is exerted by the user. We obtain a device delivering particularly reproducible doses, regardless of the user.
  • The device comprises a pump, the fixed part comprising a pump body and the mobile part comprising a dispensing head. This provides a pump whose activation is independent of the user, without significantly altering its structure. For example, it may be sufficient to modify only two of the walls of a conventional pump to incorporate the abutment means therein. Note that this pump ensures simple delivery of constant doses while meeting the requirement of compactness of a pump. A pump body generally corresponds to all the parts of the pump mounted fixed on the tank of the device, and the dispensing head to all of the mounted parts movable relative to the pump body.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins dans lesquels :

  • la figure 1 est une vue en coupe d'un dispositif pour la délivrance d'un produit selon un mode de réalisation, le dispositif étant en position activée ;
  • la figure 2 est une vue similaire à la figure 1, le dispositif étant en position de repos ;
  • la figure 3 est une vue d'une partie du dispositif de la figure 1, en position de repos ;
  • la figure 4 est une vue similaire à celle de la figure 3, selon une variante de réalisation ;
  • la figure 5 est une vue similaire à celle de la figure 3, selon un second mode de réalisation ;
  • la figure 6 est une vue similaire à celle de la figure 3, selon un troisième mode de réalisation.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings in which:
  • the figure 1 is a sectional view of a device for delivering a product according to an embodiment, the device being in the activated position;
  • the figure 2 is a view similar to the figure 1 the device being in the rest position;
  • the figure 3 is a view of a part of the device of the figure 1 , in the rest position;
  • the figure 4 is a view similar to that of the figure 3 according to an alternative embodiment;
  • the figure 5 is a view similar to that of the figure 3 according to a second embodiment;
  • the figure 6 is a view similar to that of the figure 3 according to a third embodiment.

Comme on peut le voir sur la figure 1, un dispositif pour la délivrance d'un produit liquide, semi-liquide, visqueux ou gazeux comprend une pompe 10, utilisée par exemple pour des pulvérisations nasales de produit pharmaceutique. Cette pompe 10 est destinée à être montée sur un réservoir (non représenté) et est généralement surmontée d'un embout de distribution (non représenté), sur lequel l'utilisateur appuie.As can be seen on the figure 1 , a device for delivering a liquid, semi-liquid, viscous or gaseous product comprises a pump 10, used for example for pharmaceutical nasal sprays. This pump 10 is intended to be mounted on a reservoir (not shown) and is generally surmounted by a dispensing nozzle (not shown), on which the user presses.

La pompe 10 comprend une première partie 12, dite partie fixe, et une seconde partie 14, dite partie mobile, mobile par rapport à la partie fixe 12 entre une position de repos, représentée sur la figure 2, et une position activée, représentée sur la figure 1. Ici, la position de repos correspond à une position dite haute, et la position activée à une position dite basse.The pump 10 comprises a first portion 12, said fixed portion, and a second portion 14, said moving portion, movable relative to the fixed portion 12 between a rest position, shown in FIG. figure 2 , and an activated position, represented on the figure 1 . Here, the rest position corresponds to a so-called high position, and the activated position to a so-called low position.

Dans cet exemple, la partie fixe 12 comprend un corps de pompe 16, portant un tube de prise 18, un piston 20 et un manchon de guidage 22. Le tube 18 est relié au réservoir, afin de puiser du produit destiné à passer dans la pompe. Par ailleurs, la partie fixe 12 comprend un collier de fixation 24, permettant de sertir la pompe 10 sur le réservoir. On comprend que la pompe peut également être montée sur le réservoir par vissage ou encore par encliquetage.In this example, the fixed part 12 comprises a pump body 16, carrying a gripping tube 18, a piston 20 and a guide sleeve 22. The tube 18 is connected to the reservoir, in order to draw product intended to pass through the pump. Furthermore, the fixed part 12 comprises a fastening collar 24, for crimping the pump 10 on the tank. It is understood that the pump can also be mounted on the tank by screwing or snap.

Le piston 20 comprend un support 26, monté fixe dans la partie inférieure du corps de pompe 16, traversé par un canal d'alimentation 28, agencé dans le prolongement du tube 18, et débouchant sur un ou plusieurs orifices d'alimentation prévus sur l'extrémité supérieure 32 du support. Le support 26 est par ailleurs coiffé, sur son extrémité supérieure 32, par une membrane déformable 30, montée fixe sur le support 26. La membrane 30 est pourvue d'une paroi transversale supérieure formant valve anti-retour avec l'extrémité supérieure 32 du support 26, et d'une jupe cylindrique présentant une ou plusieurs lèvres d'étanchéité 34.The piston 20 comprises a support 26, fixedly mounted in the lower part of the pump body 16, traversed by a feed channel 28, arranged in the extension of the tube 18, and opening onto one or more feed orifices provided on the upper end 32 of the support. The support 26 is also capped on its upper end 32 by a deformable membrane 30, fixedly mounted on the support 26. The membrane 30 is provided with an upper transverse wall forming a non-return valve with the upper end 32 of the support 26, and a cylindrical skirt having one or more sealing lips 34.

La partie mobile 14 de la pompe est aussi appelée une tête de distribution. Outre l'embout de distribution, elle comprend un premier cylindre 36, monté coulissant à l'intérieur du corps de pompe 16, et délimitant, avec le piston 20, une chambre de dosage 38. Plus précisément, le piston 20 peut coulisser de façon étanche par rapport au cylindre 36, grâce aux lèvres d'étanchéité 34, de façon à faire varier le volume de la chambre de dosage 38. La chambre de dosage 38 définit un volume de dosage, correspondant à la différence entre le volume de la chambre 38 en position haute et le volume de la chambre 38 en position basse, appelé "volume mort". Ce volume de dosage détermine la dose de produit délivré à chaque activation du dispositif. Sur la figure 1, la chambre de dosage 38 en position basse a un volume (volume mort) sensiblement nul, du fait que la pompe est en position activée, la dose de produit contenu dans la chambre de dosage venant d'être expulsée. On comprend que ce volume mort n'est pas forcément nul. Sur la figure 2, la chambre 38 a un volume sensiblement égal au volume d'une dose de produit.The moving part 14 of the pump is also called a dispensing head. In addition to the dispensing nozzle, it comprises a first cylinder 36, slidably mounted inside the pump body 16, and delimiting, with the piston 20, a metering chamber 38. More precisely, the piston 20 can slide sealed with respect to the cylinder 36, thanks to the sealing lips 34, so as to vary the volume of the metering chamber 38. The metering chamber 38 defines a metering volume, corresponding to the difference between the volume of the chamber 38 in the high position and the volume of the chamber 38 in the low position, called "dead volume". This dosing volume determines the dose of product delivered at each activation of the device. On the figure 1 , the metering chamber 38 in the low position has a volume (dead volume) substantially zero, because the pump is in the activated position, the dose of product contained in the metering chamber has just been expelled. We understand that this dead volume is not necessarily zero. On the figure 2 , the chamber 38 has a volume substantially equal to the volume of a dose of product.

La tête de distribution 14 comporte par ailleurs un second cylindre 40, réalisé éventuellement d'une seule pièce avec le premier cylindre 36. Bien sûr, les cylindres 36 et 40 peuvent être réalisés en plusieurs pièces. Un pointeau 42 est monté coulissant à l'intérieur de ce second cylindre 40, entre une position de repos et une position activée, sous l'action de premiers moyens de rappel 43, composés d'un ressort en compression. Le pointeau 42 est muni d'une base 42a, montée de façon étanche dans le second cylindre 40, d'une tige 42b, configurée pour pouvoir obturer, en position de repos de la pompe, un orifice 44 ménagé sur l'extrémité inférieure du second cylindre 40, et d'une extrémité 42c, faisant légèrement saillie à l'intérieur de la chambre de dosage 38 lorsque le pointeau 42 est en position activée. Cette extrémité 42c est configurée pour appuyer sur la membrane 30 lorsque la partie mobile 14 est en position activée, de façon à garantir l'ouverture de l'orifice 44 en phase d'amorçage du dispositif (donc de façon à pousser l'air de la chambre de dosage 38 vers le haut du dispositif) et/ou à obturer l'orifice d'alimentation du support 26.The dispensing head 14 further comprises a second cylinder 40, possibly made in one piece with the first cylinder 36. Of course, the cylinders 36 and 40 can be made of several parts. A needle 42 is slidably mounted within this second cylinder 40, between a rest position and an activated position, under the action of first return means 43, composed of a compression spring. The needle 42 is provided with a base 42a, sealingly mounted in the second cylinder 40, of a rod 42b, configured to be able to close, in the rest position of the pump, an orifice 44 formed on the lower end of the second cylinder 40, and an end 42c, projecting slightly inside the metering chamber 38 when the needle 42 is in the activated position. This end 42c is configured to press the membrane 30 when the movable portion 14 is in the activated position, so as to ensure the opening of the orifice 44 in the priming phase of the device (so as to push the air of the metering chamber 38 towards the top of the device) and / or to close the supply orifice of the support 26.

La tête de distribution 14 comporte par ailleurs un support 46, monté fixe sur le premier cylindre 36. Le support 46 délimite une chambre de distribution 48. Bien sûr, le support 46 pourrait être réalisé d'une seule pièce avec les éléments 36 et/ou 40. C'est généralement sur le support 46 qu'est monté l'embout de distribution du dispositif, la chambre 48 étant reliée à une buse de distribution prévue sur cet embout. On notera que la chambre 48 n'est pas forcément présente sur le support 46, on peut prévoir seulement une connexion du support 46 et/ou du cylindre 40 avec l'embout de distribution. Le support 46 de la tête 14 est muni d'une jupe interne 50 et d'une jupe externe 52, entre lesquelles des seconds moyens de rappel 54 sont logés. Les moyens de rappel 54 sont composés d'un ressort en compression, prenant appui d'une part sur le support 46, entre les deux jupes 50, 52, d'autre part sur la partie fixe 12, au fond du manchon 22. Grâce au ressort 54, la tête 14, mobile par rapport à la partie fixe 12 entre une position de repos et une position activée, est maintenue en position haute, comme cela est représenté sur la figure 1. A l'intérieur de la jupe interne 50, le support 46 présente par ailleurs un siège d'appui du premier ressort 43. Le support 46 comprend de plus des moyens assurant le passage du liquide depuis la chambre de dosage 38 vers l'embout de distribution, plus précisément vers la chambre de distribution 48, agencés notamment entre le second cylindre 40 et la jupe interne 50, de préférence de façon à assurer le passage de liquide sans que ce liquide ne soit en contact avec les moyens de rappel 43 et 54.The dispensing head 14 also comprises a support 46, fixedly mounted on the first cylinder 36. The support 46 defines a distribution chamber 48. Of course, the support 46 could be made in one piece with the elements 36 and / or 40. It is generally on the support 46 that the dispensing nozzle of the device is mounted, the chamber 48 being connected to a dispensing nozzle provided on this nozzle. Note that the chamber 48 is not necessarily present on the support 46, it can provide only a connection of the support 46 and / or the cylinder 40 with the dispensing tip. The support 46 of the head 14 is provided with an inner skirt 50 and an outer skirt 52, between which second return means 54 are housed. The return means 54 are composed of a spring in compression, bearing on the one hand on the support 46, between the two skirts 50, 52, on the other hand on the fixed part 12, at the bottom of the sleeve 22. at the spring 54, the head 14, movable relative to the fixed part 12 between a rest position and an activated position, is held in the up position, as shown in FIG. figure 1 . Inside the inner skirt 50, the support 46 also has a bearing seat of the first spring 43. The support 46 further comprises means ensuring the passage of the liquid from the metering chamber 38 to the tip of distribution, more precisely to the distribution chamber 48, arranged in particular between the second cylinder 40 and the inner skirt 50, preferably so as to ensure the passage of liquid without the liquid being in contact with the return means 43 and 54 .

La pompe 10 comprend également des moyens 56, 58 de mise en butée de la partie mobile 14 par rapport à la partie fixe 12, devant être franchis en force pour que la partie 14 passe de sa position de repos à sa position activée. Les moyens 56, 58 sont représentés plus en détails sur la figure 3. Ils comprennent dans cet exemple trois butées 56, portées par la partie mobile 14, et trois butées 58 portées par la partie fixe 12. Dans l'exemple de la figure 3, les butées 58 sont montées chacune sur une portion élastique 60 de la partie fixe 12, plus précisément du manchon 22. La portion élastique 60 est une patte élastique, présentant une extrémité 62 venue de matière avec la partie fixe 12, et une extrémité libre 64. La patte élastique 60 est déformable entre une configuration de butée, représentée sur la figure 3, et une configuration d'effacement. Dans sa configuration de butée, l'extrémité libre 64 de la patte 60 est située à la verticale de l'extrémité 62. Dans sa configuration d'effacement, la butée 58 est déplacée vers la droite d'une distance X représentée sur la figure 3. Ce déplacement est effectué par déformation élastique de la patte 60, la butée 56 présentant un chanfrein 66, formant une rampe avec un chanfrein complémentaire 68 de la buté 58 lorsque la partie mobile est déplacée vers le bas, selon la flèche 70.The pump 10 also comprises means 56, 58 for abutment of the movable part 14 relative to the fixed part 12, to be forced past in order for the part 14 to move from its rest position to its activated position. The means 56, 58 are shown in more detail on the figure 3 . In this example, they comprise three stops 56, carried by the moving part 14, and three stops 58 carried by the fixed part 12. In the example of FIG. figure 3 the stops 58 are each mounted on an elastic portion 60 of the fixed part 12, plus The resilient portion 60 is an elastic tab having an end 62 formed integrally with the fixed portion 12, and a free end 64. The elastic tab 60 is deformable between an abutment configuration, shown in FIG. figure 3 , and an erase configuration. In its abutment configuration, the free end 64 of the tab 60 is located vertically from the end 62. In its erasure configuration, the stop 58 is moved to the right by a distance X represented on the figure 3 . This displacement is effected by elastic deformation of the lug 60, the abutment 56 having a chamfer 66, forming a ramp with a complementary chamfer 68 of the abutment 58 when the mobile part is moved downwards, according to the arrow 70.

On a prévu ici trois pattes élastiques sur la partie fixe 12, mais on peut bien sûr en prévoir davantage ou moins. On notera qu'il est intéressant de prévoir des butées en trois points pour assurer l'immobilisation de la partie mobile au repos. Par ailleurs, on comprend que les moyens de mise en butée 56, 58 peuvent prendre d'autres formes.There are provided here three elastic tabs on the fixed part 12, but we can of course provide more or less. Note that it is interesting to provide stops in three points to ensure the immobilization of the mobile part at rest. Furthermore, it is understood that the abutment means 56, 58 may take other forms.

Les moyens 56, 58 de mise en butée sont permanents, donc non fusibles, c'est-à-dire qu'ils sont destinés à être franchis en force à chaque activation de la pompe par l'utilisateur. Ils sont configurés de telle sorte que la force nécessaire pour les franchir en force est supérieure à la force nécessaire pour délivrer une dose de produit. Par ailleurs, on notera que les moyens 56, 58 sont ponctuels.The means 56, 58 of abutment are permanent, and therefore not fusible, that is to say that they are intended to be forcefully crossed at each activation of the pump by the user. They are configured in such a way that the force required to overcome them in force is greater than the force required to deliver a dose of product. Moreover, it will be noted that the means 56, 58 are punctual.

La pompe 10 comprend en outre des moyens de renforcement de la portion élastique 60, appuyant sur la zone 62 de la portion 60. Dans cet exemple, les moyens de renforcement comprennent une ceinture 72, portée par le collier de fixation 24, appuyant sur une partie des pattes 60 pour augmenter leur résistance avant de se déformer. On augmente ainsi l'effort minimal que l'utilisateur doit exercer.The pump 10 further comprises means for reinforcing the elastic portion 60, pressing on the zone 62 of the portion 60. In this example, the reinforcing means comprise a belt 72, carried by the fastening collar 24, pressing on a part of the tabs 60 to increase their resistance before deforming. This increases the minimum effort that the user must exercise.

Le fonctionnement de la pompe des figures 1, 2 et 3, assemblée sur le réservoir et munie de l'embout de distribution, va à présent être décrit.The operation of the pump figures 1 , 2 and 3 , assembled on the tank and provided with the dispensing nozzle, will now be described.

Avant que l'utilisateur ne délivre une dose de produit, la pompe 10 est en position de repos, ou position haute, représentée sur la figure 2. Dans cette position, la pompe est déjà amorcée, donc la chambre de dosage 38 a un certain volume, dit volume en position haute, et est remplie de produit, le produit contenu dans cette chambre 38 comprenant la dose de produit qui sera distribuée. En d'autres termes, comme on peut le voir sur la figure 2, la position de repos correspond à une position dans laquelle le premier cylindre 36, donc l'ensemble de la partie mobile 14, est décalé vers le haut par rapport à la partie fixe 12, notamment par rapport au corps de pompe 16. Dans cette position, le pointeau 42 est plaqué contre l'extrémité inférieure du cylindre 40, sous l'action du ressort 43, la tige 42b coopérant avec l'orifice 44 de façon à obturer cet orifice. Par ailleurs, dans cette position, l'extrémité 42c du pointeau 42 n'est pas en contact avec le piston 20, ce dernier se trouvant en bas de la chambre de dosage 38. Dans cette position de repos, les moyens de butée 56, 58 ne sont pas encore franchis en force, l'utilisateur n'appuyant pas sur la pompe pour l'activer, ils ont une position similaire à celle représentée sur la figure 2 ou 3.Before the user delivers a dose of product, the pump 10 is in the rest position, or high position, represented on the figure 2 . In this position, the pump is already primed, so the metering chamber 38 has a certain volume, said volume in the high position, and is filled with product, the product contained in this chamber 38 comprising the dose of product to be dispensed. In other words, as we can see on the figure 2 , the rest position corresponds to a position in which the first cylinder 36, so the whole of the moving part 14, is shifted upwards relative to the fixed part 12, in particular with respect to the pump body 16. In this position, the needle 42 is pressed against the lower end of the cylinder 40, under the action of the spring 43, the rod 42b cooperating with the orifice 44 so as to close this orifice. Furthermore, in this position, the end 42c of the needle 42 is not in contact with the piston 20, the latter being at the bottom of the metering chamber 38. In this rest position, the stop means 56, 58 are not yet crossed in force, the user does not press on the pump to activate it, they have a position similar to that shown on the figure 2 or 3 .

Lorsque l'utilisateur souhaite délivrer une dose de produit, il appuie sur la partie mobile 14 de la pompe 10, éventuellement en appuyant sur l'embout de distribution. Il exerce ainsi sur la partie mobile 14 une force schématisée par la flèche 70 sur la figure 3, dans le but d'activer la pompe 10. Sous l'action de cet appui, la partie mobile 14 commence à descendre, jusqu'à ce que les moyens de mise en butée 56, 58 soient en contact et exercent ainsi une résistance à l'appui de l'utilisateur. Suite à cette mise en butée des moyens 56, 58, deux solutions sont possibles.When the user wishes to deliver a dose of product, he presses the movable portion 14 of the pump 10, possibly by pressing the dispensing tip. It thus exerts on the mobile part 14 a force schematized by the arrow 70 on the figure 3 , in order to activate the pump 10. Under the action of this support, the movable portion 14 begins to descend, until the abutment means 56, 58 are in contact and thus exert a resistance to the support of the user. Following this abutment means 56, 58, two solutions are possible.

Soit la force exercée par l'utilisateur est suffisante pour que les chanfreins 66, 68 déplacent l'extrémité 64 de la distance X, c'est-à-dire pour que les moyens 56, 58 soient franchis en force. Dans ce cas, l'utilisateur a exercé un appui suffisamment fort qui va pouvoir activer la pompe et délivrer une dose satisfaisante de produit, comme cela est expliqué dans la suite.That is, the force exerted by the user is sufficient for the chamfers 66, 68 to move the end 64 of the distance X, that is to say for the means 56, 58 to be force-crossed. In this case, the user has exerted a sufficiently strong support that will be able to activate the pump and deliver a satisfactory dose of product, as explained below.

Soit la force exercée par l'utilisateur est insuffisante pour que les moyens 56, 58 soient franchis en force. Dans ce cas, comme les moyens 56, 58 empêchent la partie mobile 14 de se déplacer, l'utilisateur est contraint d'exercer une force supérieure sur la partie mobile 14, afin de forcer le passage des moyens 56, 58. Cette force supérieure exercée par l'utilisateur est ensuite transmise au reste de la pompe 10 pour l'activer et assurer la délivrance d'une dose satisfaisante de produit, comme expliqué dans la suite.Either the force exerted by the user is insufficient for the means 56, 58 to be force-crossed. In this case, since the means 56, 58 prevent the mobile part 14 from moving, the user is forced to exert an upper force on the movable part 14, in order to force the passage of the means 56, 58. This upper force exerted by the user is then transmitted to the rest of the pump 10 to activate it and ensure the delivery of a satisfactory dose of product, as explained below.

Une fois les moyens 56, 58 franchis en force, la partie mobile 14 poursuit sa course vers le bas, conformément à la flèche 70. Ainsi, le support 46 se déplaçant vers le bas, les premier 36 et second 40 cylindres sont également déplacés vers le bas, ce qui a pour effet de diminuer le volume de la chambre de dosage 38. Plus précisément, le liquide contenu dans cette chambre exerce une pression vers le haut sur le pointeau 42, de façon que la tige 42b soit déplacée et n'obture plus l'orifice 44. Le liquide peut ainsi s'échapper de la chambre 38. Une fois le liquide passé à travers l'orifice 44, il s'écoule entre le second cylindre 40 et la jupe interne 50, et passe ensuite dans la chambre de distribution 48, afin d'être délivré hors de l'embout de distribution. On notera que, lorsque le volume de la chambre de dosage 38 diminue jusqu'à atteindre un volume en position basse, ici sensiblement nul, le liquide exerce une pression sur le pointeau 42 pour le relever. Selon un mode de réalisation optionnel, l'extrémité 42c du pointeau en position basse appuie sur la membrane 30 de façon à la plaquer contre l'extrémité supérieure 32 du support 26, et ainsi obturer le ou les orifices d'alimentation.Once the means 56, 58 forcefully passed, the movable portion 14 continues its downward stroke, in accordance with the arrow 70. Thus, the support 46 moving downwards, the first 36 and second 40 cylinders are also moved to the bottom, which has the effect of reducing the volume of the metering chamber 38. More specifically, the liquid contained in this chamber exerts an upward pressure on the needle 42, so that the rod 42b is moved and n ' closes the orifice 44. The liquid can thus escape from the chamber 38. Once the liquid has passed through the orifice 44, it flows between the second cylinder 40 and the inner skirt 50, and then passes into the distribution chamber 48, to be delivered out of the dispensing nozzle. Note that when the volume of the metering chamber 38 decreases until a volume in the low position, here substantially zero, the liquid exerts a pressure on the needle 42 to raise it. According to an optional embodiment, the end 42c of the needle in the low position presses the membrane 30 so as to press against the upper end 32 of the support 26, and thus close the or the supply ports.

Une fois que la chambre de dosage 38 atteint son volume en position basse, ici sensiblement nul, , c'est-à-dire une fois que la dose de produit a été distribuée, l'utilisateur relâche son appui sur la partie mobile 14. Sous l'action du ressort 43, le pointeau 42 est à nouveau comprimé contre la paroi inférieure du cylindre 40, de façon à obturer l'orifice 44. Par ailleurs, sous l'effet du ressort 54, la partie mobile 14 remonte vers le haut, dans une direction opposée à la flèche 70. Par ailleurs, grâce au ressort 54, le second cylindre 36 coulisse par rapport au piston 20 dans la direction opposée à la flèche 70, si bien que la chambre de dosage 38 augmente de volume, de façon à créer une dépression et aspirer du produit par le tube de prise 18. La partie mobile 14 se déplace vers le haut jusqu'à la position de repos initiale. Dans cette position, la chambre de dosage 38 est à nouveau remplie de produit, en ayant un volume identique en position haute, à celui qu'elle avait au départ, et permettant ainsi de délivrer une autre dose, de volume identique à celui venant d'être délivré.Once the dosing chamber 38 reaches its volume in the low position, here substantially zero, that is to say once the dose of product has been dispensed, the user releases his support on the mobile part 14. Under the action of the spring 43, the needle 42 is again compressed against the lower wall of the cylinder 40, so as to close the orifice 44. Moreover, under the effect of the spring 54, the movable portion 14 rises towards the high, in a direction opposite to the arrow 70. Moreover, thanks to the spring 54, the second cylinder 36 slides relative to the piston 20 in the direction opposite to the arrow 70, so that the metering chamber 38 increases in volume, so as to create a vacuum and suck the product through the grip tube 18. The movable portion 14 moves upward to the initial rest position. In this position, the metering chamber 38 is again filled with product, having an identical volume in the upper position, to the one it had at the beginning, and thus allowing to deliver another dose, of volume identical to that coming from 'to be delivered.

On comprendra que les moyens de mise en butée 56, 58 peuvent prendre d'autres formes que celle illustrée sur les figures 1 à 3. Par exemple, selon une variante illustrée sur la figure 4, non seulement la butée 58 est portée par une patte déformable 60, mais la butée 56 est également portée par une patte déformable 74, portée par la jupe externe 52 du support 46. Selon une autre variante, la ou les pattes déformables 60 peuvent être ménagées sur la partie mobile 14 seule.It will be understood that the abutment means 56, 58 may take other forms than that illustrated on the Figures 1 to 3 . For example, according to a variant illustrated on the figure 4 not only the stop 58 is carried by a deformable tab 60, but the stop 56 is also carried by a deformable tab 74, carried by the outer skirt 52 of the support 46. According to another variant, the deformable tab or tabs 60 may be arranged on the movable part 14 alone.

Par ailleurs, selon un second mode de réalisation illustré sur la figure 5, la portion élastique comprend une patte 60' présentant deux extrémités opposées 62', 64', chaque extrémité 62', 64' étant montée fixe sur la partie fixe 12, plus précisément sur le manchon de guidage 22. Selon ce mode de réalisation, c'est la partie médiane de la patte 60' qui se déforme lorsque les moyens 56, 58 sont franchis en force. On comprend qu'une telle configuration de la patte 60' permet d'assurer une résistance relativement importante au passage en force des moyens 56, 58.Moreover, according to a second embodiment illustrated on the figure 5 , the elastic portion comprises a tab 60 'having two opposite ends 62', 64 ', each end 62', 64 'being fixedly mounted on the fixed part 12, more precisely on the guide sleeve 22. According to this embodiment, it is the middle part of the leg 60 'which deforms when the means 56, 58 are crossed in force. It is understood that such a configuration of the tab 60 'ensures a relatively high resistance to the passage of force means 56, 58.

Sur le mode de réalisation de la figure 6, la butée 58 est montée coulissante par rapport à la partie fixe 12, plus précisément par rapport au manchon 22. Cette butée 58 est déplaçable entre une position d'effacement et une position de butée, illustrée sur la figure 6. Ce déplacement est exercé par des moyens de rappel appuyant sur la butée 58, par exemple un ressort ou un bras élastique exerçant sur la butée 58 une force représentée par la référence 76. La butée 58 pourrait éventuellement être montée coulissante par rapport à la partie mobile 14.On the embodiment of the figure 6 , the stop 58 is slidably mounted relative to the fixed part 12, more precisely with respect to the sleeve 22. This stop 58 is movable between an erasing position and an abutment position, illustrated on FIG. figure 6 . This displacement is exerted by return means pressing on the abutment 58, for example a spring or an elastic arm exerting on the stop 58 a force represented by the reference 76. The stop 58 could possibly be slidably mounted relative to the moving part. 14.

Selon encore une autre variante particulière, on peut prévoir de combiner la portion élastique 60 de la figure 3 et les moyens de rappel de la figure 6. Ainsi, un ressort peut appuyer sur une butée 58 montée, non pas coulissante par rapport à la partie fixe 12, mais directement intégrée sur la partie fixe 12. Cette portion 60 est déformable entre une configuration de butée et une configuration d'effacement, en étant rappelée dans sa configuration de butée par des moyens de rappel similaires à ceux de la figure 6. L'un des avantages de cette variante réside dans le fait que la butée est réalisée directement dans la partie fixe ou la partie mobile, et ne requiert donc pas l'assemblage d'une pièce spécifique supplémentaire.According to yet another particular variant, it is possible to combine the elastic portion 60 of the figure 3 and the reminder means of the figure 6 . Thus, a spring can press a stop 58 mounted, not sliding relative to the fixed portion 12, but directly integrated on the fixed portion 12. This portion 60 is deformable between an abutment configuration and an erase configuration, being recalled in its abutment configuration by return means similar to those of the figure 6 . One of the advantages of this variant lies in the fact that the stop is made directly in the fixed part or the moving part, and therefore does not require the assembly of an additional specific piece.

On comprend que la structure et le fonctionnement des exemples des figures 4 à 6 sont similaires à celui des figures 1, 2 et 3.It is understood that the structure and operation of the examples of Figures 4 to 6 are similar to that of figures 1 , 2 and 3 .

On notera que le dispositif décrit n'est pas limité aux exemples précédemment décrits. En particulier, les moyens 56, 58 de mise en butée peuvent être prévus sur d'autres pièces de la partie fixe 12 et de la partie mobile 14. On pourrait éventuellement envisager que ces moyens soient prévus entre le corps de pompe 16 et le haut du second cylindre 36, ou encore entre l'embout monté sur la partie mobile 14 et le manchon 22. Le fait de prévoir les moyens 56, 58 respectivement sur le support 46 et le manchon 22 est particulièrement satisfaisant, car ces moyens de mise en butée sont agencés dans une zone ne requérant pas d'étanchéité, le produit ne s'écoulant pas dans cette zone-là. Par ailleurs, les moyens 56, 58 ainsi disposés sont suffisamment éloignés de l'action des doigts de l'utilisateur, ce qui diminue les risques de dysfonctionnement.It will be noted that the device described is not limited to the examples described above. In particular, the means 56, 58 of abutment can be provided on other parts of the fixed part 12 and the movable part 14. It could possibly be envisaged that these means are provided between the pump body 16 and the top the second cylinder 36, or between the tip mounted on the movable portion 14 and the sleeve 22. The fact of providing the means 56, 58 respectively on the support 46 and the sleeve 22 is particularly satisfactory, because these means of implementation stop are arranged in an area not requiring sealing, the product does not flow in this area. Moreover, the means 56, 58 thus arranged are sufficiently far from the action of the fingers of the user, which reduces the risk of malfunction.

Claims (8)

  1. Device (10) for delivering a substance, the device comprising a first portion (12), referred to as a stationary portion, and a second portion (14) that is movable relative to the first portion (12) between a rest position and an activated position, said second portion (14) being referred to as a movable portion, the device further comprising abutment means (56, 58) for putting the movable portion (14) into abutment relative to the stationary portion (12), which means need to be forced past in order to enable the movable portion (14) to go from its rest position to its activated position, the abutment means (56, 58) comprising an abutment (56) carried by the movable portion (14) and an abutment (58) carried by the stationary portion (12), at least one of these abutments (58) being mounted on a resilient portion (60) of the stationary portion (12) and/or of the movable portion (14), the resilient portion being deformable between an abutment configuration and a retraction configuration, characterized in that the abutment means (56, 58) comprise reinforcing means (72) for reinforcing the resilient portion (60), namely a part that bears against a zone of the resilient portion (60).
  2. Device according to claim 1, wherein the abutment means are permanent, being designed to be forced past on each activation of the device by a user.
  3. Device according to any of the preceding claims, wherein the abutment means (56, 58) are configured in such a manner that the force needed to force past them is greater than the force needed for the movable portion (14) to reach the end of its stroke.
  4. Device according to any of the preceding claims, wherein the resilient portion (60, 60') is preferably a resilient tab.
  5. Device according to any of the preceding claims, wherein the resilient portion (60') comprises a tab (60') having two opposite ends (62', 64'), the two ends being fastened on the stationary portion (12) or being fastened on the movable portion (14).
  6. Device according to any of the preceding claims, wherein the abutment means (56, 58) comprise an abutment (58) that is slidably mounted relative to the stationary portion (12) or to the movable portion (14), being movable between a retracted position and an abutment position under drive from return means bearing against said abutment, e.g. under drive from a spring or a resilient arm.
  7. Device according to any of the preceding claims, comprising a pump (10), the stationary portion (12) comprising a pump body (16) and the movable portion comprising a dispenser head (14).
  8. Device according to any of the preceding claims, wherein the abutment means (56, 58) are substantially punctual, i.e. their action is short relative to the stroke of the movable portion (14).
EP10152648.1A 2009-02-06 2010-02-04 Device for dispensing a product comprising a pump, comprising a fixed part and a mobile part Not-in-force EP2216099B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0950775A FR2941933B1 (en) 2009-02-06 2009-02-06 DEVICE FOR DELIVERING A PRODUCT COMPRISING A PUMP, COMPRISING A FIXED PART AND A MOBILE PART.

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EP2216099A1 EP2216099A1 (en) 2010-08-11
EP2216099B1 true EP2216099B1 (en) 2015-07-08

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EP10152648.1A Not-in-force EP2216099B1 (en) 2009-02-06 2010-02-04 Device for dispensing a product comprising a pump, comprising a fixed part and a mobile part

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US (1) US8365961B2 (en)
EP (1) EP2216099B1 (en)
CN (1) CN101823588B (en)
FR (1) FR2941933B1 (en)

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ITMI20131251A1 (en) * 2013-07-25 2015-01-26 Meadwestvaco Calmar S R L MANUAL-OPERATED PUMP FOR THE DELIVERY OF FLUID SUBSTANCES WITH EASY OPERATION
FR3010746B1 (en) * 2013-09-18 2015-09-25 Rowenta Werke Gmbh MANUAL PUMP FOR AN APPARATUS FOR ELECTRICALLY INCLUDING A DEVICE FOR IRONING
CN107628355B (en) * 2016-07-19 2023-05-26 丁要武 Emulsion pump with water inlet prevention mechanism
DE102016114456A1 (en) * 2016-08-04 2018-02-08 Rpc Bramlage Gmbh Fingerspraypumpe and nozzle head for a spray pump
WO2019182745A1 (en) 2018-03-19 2019-09-26 Bryn Pharma, LLC Epinephrine spray formulations
CN114514182A (en) * 2019-07-18 2022-05-17 Gb发展公司 Fluid distributor
FR3098734A1 (en) * 2019-07-18 2021-01-22 Gb Developpement Fluid dispenser
IT201900021321A1 (en) * 2019-11-15 2021-05-15 Taplast Srl BELLOW PUMP LOCKABLE IN PORTRAIT POSITION
NL2025710B1 (en) * 2020-05-29 2022-01-13 Dispensing Tech Bv Device and system for dispensing a liquid from a container, and method for assembling a device for dispensing a liquid

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FR2885887B1 (en) * 2005-05-20 2010-11-05 Rexam Dispensing Sys POINTE PUMP FOR THE DISTRIBUTION OF LIQUID PRODUCT

Also Published As

Publication number Publication date
FR2941933A1 (en) 2010-08-13
FR2941933B1 (en) 2016-02-12
US8365961B2 (en) 2013-02-05
EP2216099A1 (en) 2010-08-11
CN101823588A (en) 2010-09-08
CN101823588B (en) 2014-09-03
US20100224653A1 (en) 2010-09-09

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