EP2579993B1 - Pumpe zur ausgabe eines produkts mit einem gleitkolben in der messkammer - Google Patents

Pumpe zur ausgabe eines produkts mit einem gleitkolben in der messkammer Download PDF

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Publication number
EP2579993B1
EP2579993B1 EP11735473.8A EP11735473A EP2579993B1 EP 2579993 B1 EP2579993 B1 EP 2579993B1 EP 11735473 A EP11735473 A EP 11735473A EP 2579993 B1 EP2579993 B1 EP 2579993B1
Authority
EP
European Patent Office
Prior art keywords
membrane
pump
support
product
skirt
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
EP11735473.8A
Other languages
English (en)
French (fr)
Other versions
EP2579993A1 (de
Inventor
Xavier Donnette
José Camba
Philippe Sahm
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nemera la Verpilliere SAS filed Critical Nemera la Verpilliere SAS
Publication of EP2579993A1 publication Critical patent/EP2579993A1/de
Application granted granted Critical
Publication of EP2579993B1 publication Critical patent/EP2579993B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • 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
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
    • 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
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

  • the present invention relates to the technical field of the delivery of liquid product, semi-liquid or viscous especially in the medical field.
  • This device comprises a pump, for sucking and dispensing the product contained in a tank.
  • the device can be used in particular for nasal sprays.
  • the pump comprises an elastic membrane comprising a nonreturn valve-forming portion so as to prevent product reflux from the dosing chamber to the reservoir.
  • the elastic membrane is attached to a support through which a feed channel serves as a seat for the non-return valve portion so that the valve is pressed against the seat to block the liquid or remote from the seat to pass it.
  • the membrane is slidably mounted in the dosing chamber of the pump, in a sealed manner, to expel the product contained in the chamber from the chamber.
  • the elastic membrane comprises a transverse wall forming the valve for closing the supply channel of the chamber, and a cylindrical skirt provided with one or two peripheral sealing lips, in sliding contact with the inner wall of the chamber. dosing.
  • the documents FR 2,765,560 , FR 2,664,353 and FR 2 699 390 describe pumps and valves according to the prior art.
  • the present invention aims in particular to provide a pump delivering more precise doses.
  • the sealing function and the non-return valve function are provided by two parts, namely the membrane and the plating element, made of two different materials, rather than a single elastic part.
  • the material of each part can be adapted to the function associated with it, namely the function of the non-return valve for the membrane and that of plating or sliding in a metering chamber for the plating element.
  • the material of the plating element is more impervious to air than the membrane material, which avoids the introduction of air into the pump by diffusion of air through the material, especially through the cylindrical skirt.
  • the first material is relatively flexible and the second material is relatively rigid, that is to say that the material of the plating element is more rigid than the material of the membrane.
  • a flexible material such as for example silicone
  • the fact of using a less breathable material for the plating element avoids the introduction of air into the device, by diffusion through the walls of the plating element.
  • the membrane performs the function of a non-return valve satisfactorily because it is elastic. Indeed, it is thus flexible enough to be able to take a blocking configuration of the product, cooperating with the support, and a product passage configuration, the product blocking configuration preventing the return of the product inside the channel of the product.
  • the sealing means are made of rigid material, the sliding between these means and the wall of the metering chamber is done with less friction and thus generates less wear of the sealing means. while requiring less force from the user to operate the pump.
  • a piece of rigid material may be less likely to react with the product, and also allows better control of dimensions and therefore a more accurate adjustment of the different parts relative to each other in the chamber of dosage.
  • the pump shown above is particularly interesting when operating without air intake.
  • This type of pump is generally called an "airless pump".
  • the priming of the pump that is to say that the air contained in the metering chamber is completely replaced by the product to be delivered
  • the product expelled from the tank with each use is not replaced by air coming from outside.
  • a vacuum is formed within the tank which can cause leaks and / or aspirations of air in the device, and cause the entry of gas by diffusion through the walls of the device.
  • This introduction of air is troublesome because in this case, the metering chamber or the dip tube immersed in the tank are no longer only filled with product, which alters the accuracy of the product doses delivered and causes a slight defusing of the pump .
  • the plating element is made of a material different from the membrane, it is possible to choose a material having a lower air permeability than the material of the membrane, so that the diffusion of air through the element of plating is as low as possible and that the introduction of air into the metering chamber is almost non-existent.
  • the introduction of air into the metering chamber is negligible, the doses provided are particularly accurate, and for a long time.
  • the volume delivered by the pump will always be substantially constant, even if it is not activated after a long period (for example 5 or 7 , days)
  • Another advantage of the pump proposed above lies in the fact that the plating element and the membrane are inserts relative to each other, that is to say they are manufactured separately and that they do not form a single piece. They could, if necessary, be disassembled independently of one another. Indeed, it is more interesting to mount the two separate parts in the pump than to achieve directly by being integral with each other (for example by gluing, overmolding or by bi-injection), the fact that these parts are of particularly small size, and that the bonding by gluing, overmoulding or bi-injection is delicate and can cause leaks.
  • the membrane is held on the support so that a portion of the membrane is sandwiched between the support and the plating element on the membrane.
  • the elastic deformation of the membrane has no effect on the plating element and therefore on the sealing means, this membrane being simply plated, in a deformed state, against the support by the element. plating.
  • An additional advantage of making the membrane and the plating element separately is that the geometry of the membrane can be very easily varied depending on the product delivered. Indeed, one can increase or reduce its deformation on the support, so the force required for product release. It is thus easy to adapt the pump to the viscosity of the product to be delivered. It is therefore easier to optimize the membrane and the plating element.
  • the membrane when it is in the product blocking configuration, is preferably elastically deformed, so that it closes the passage under the effect of its elastic return.
  • the membrane undergoes additional deformation, under the effect of the depression in the metering chamber, corresponding to an amplification of the deformation provided in the locking configuration, so as to detach support to let the product through.
  • the piston is slidably mounted in the metering chamber between a rest position, also called low position, and an activated position, also called high position.
  • the dosing chamber thus defines a dosing volume, corresponding to the difference between a volume of the chamber in the low position and a volume of the chamber in the high position, also called "dead volume”.
  • a product delivery device 10 comprising a pump 12 surmounted by a product dispensing tip 14.
  • the device is used for example for nasal sprays of pharmaceutical product.
  • This pump 12 is intended to be mounted on a reservoir (not shown).
  • the pump 12 comprises a first portion 16, said fixed portion, and a second portion 18, said movable portion or dispensing head, movable relative to the fixed portion 16.
  • the fixed portion 16 of the pump 12 comprises a pump body 20 comprising an outer cylinder 22 connected to an inner cylinder 24 for receiving a dip tube 26.
  • the dip tube 26 is immersed in the reservoir when the device is mounted on it to draw from the product to be delivered.
  • the pump body 20 carries a piston 28 attached to the inner cylinder 24.
  • the fixed portion 16 of the pump comprises a clamping collar 30, for crimping the pump 12 on the tank.
  • the pump 12 may be mounted on the tank by screwing or snapping (also called "snap-on").
  • the piston 28 comprises a support 32, a membrane 34 forming a non-return valve and a member 36 for plating the membrane 34 on the support 32.
  • the support 32 has a generally tubular shape and is fixedly mounted on the inner cylinder 24. It is traversed by a feed channel 38, arranged in the extension of the tube 26, and opening onto a supply port provided on the upper end of the support.
  • the support 32 may be integrally molded with the pump body 20, and be constituted by the inner cylinder 24, the feed channel 38 can then be constituted by all or part of the inner cylinder 24.
  • the upper end of the support 32 is capped by the membrane 34 and defines a bearing seat 40 of this membrane 34. The membrane 34 is pressed by elastic deformation against the seat 40 by the plating element 36.
  • FIG. 2 a perspective view of an embodiment of the membrane is presented. It comprises a central disc 42 carrying means forming a non-return valve by cooperation with the support 32 and a positioning edge 44 connected to the disc 42 by a perforated wall 46 passing the product.
  • the positioning edge 44 has an annular shape.
  • the positioning edge 44 may have discontinuities 48, as shown in FIG. figure 4 ; it does not necessarily have a continuous annular shape.
  • the positioning edge 44 makes it possible to press the central disk 42 against the support seat 40 of the support 32 by elastic deformation of the membrane 34 and more particularly of the perforated wall 46.
  • the elastic deformation of the membrane 34 is obtained by supporting a plating surface 50 of the plating element 36 on the positioning edge 44 of the membrane 34.
  • the plating surface 50 deforms the membrane 34 by moving the positioning edge 44 towards the support 32 and holds the membrane 34 in product blocking configuration.
  • the membrane 34 is made of a relatively flexible and elastic material, for example: silicone, propylene / ethylene copolymers, polyether blockamides, polyvinyl, terpolymer of ethylene, propylene and a diene (EPDM), sequenced styrene-butadiene polymer (SBS), sequenced styrene-ethylene-butadiene polymer (SEBS-SIS), polyurethane, butyl rubber or nitrile rubber; in latex, fluorinated elastomers or polypropylene blend with one of the following elastomers: styrene-ethylene-butadiene block polymers (SEBS-SIS), terpolymers of ethylene, propylene and a diene (EPDM), polymers sequenced styrene-butadiene (SBS).
  • silicone silicone
  • propylene / ethylene copolymers polyether blockamides
  • the plating element 36 may be made of less permeable material than the elastic material of the membrane, for example: high or low density polyethylene, polypropylene, polyester, polyacetal, ethylene vinyl acetate or mixtures thereof.
  • the material of the plating element 36 which is less permeable to air, is more rigid than that of the membrane 34.
  • this material is not necessarily more rigid. could be simply different from the material of the membrane 34, preferably more impervious to air.
  • the element of plating 36 comprises a skirt 52 and a perforated transverse wall 54 integrally formed with the skirt 52.
  • the skirt 52 carries on its upper end a revolution lip 56 which may, for example, be of frustoconical shape and extend towards the end upper part of the pump, the narrowest part being at the lower end of the lip, that is to say that it forms with the skirt a "V" whose opening is turned towards the upper part of the pump.
  • This lip 56 forms the first sealing means of the pump.
  • the transverse wall 54 has a solid central portion 58 and, in the present case, two orifices 60 for product passage.
  • the skirt 52 of the plating element 36 comprises means 62 for fixing the plating element on the support 32.
  • these fastening means 62 are embodied by an annular groove carried by the inner wall of the skirt 52 which cooperate, snap-fastening, with lugs 64 or an annular rib 64 made on the support.
  • lugs 64 can be provided.
  • the lugs or the rib can be integral with the support 32.
  • the means 62 and 64 also make it possible to center and plating the plating element. 36 on the support 32.
  • the support 32 comprises a cylindrical outer surface carrying second sealing means, ensuring the sealing attachment of the plating element 36 on the support 32.
  • These second sealing means 66 can, for example, be an annular rib which, by deformation of the inner wall of the plating element, ensures the sealing of the assembly. It is further noted that the support 32 comprises a shoulder 68 against which the lower end of the skirt 52 abuts.
  • the plating element 36 carries, on the inner surface of the transverse wall 54, a centering rib 94 which makes it possible to ensure easy and rapid centering of the membrane 34 and the plating element 36.
  • the support 32, the membrane 34 and the plating element 36 are separate parts.
  • the moving part 18 of the pump comprises a first cylinder 70, slidably mounted inside the pump body 20, and delimiting, with the piston 28, more precisely with the plating element 36, the metering chamber 72.
  • the piston 28 is slidably mounted in the first cylinder 70, therefore in the metering chamber 72.
  • the sealing sliding of the piston 28, therefore of the plating element 36, in the metering chamber 72 is ensured by the first ones sealing means 56 carried by the skirt 52 of the plating element 36.
  • the chamber 72 defines a dosing volume, corresponding to the difference between the volume of the chamber 72 when the piston 32 is in the up position and the volume of the chamber 72 when the piston 32 is in the low position. This dosing volume determines the dose of product delivered at each activation of the device.
  • the movable portion 18 further comprises a second cylinder 74, made in one piece with the first cylinder 70.
  • the cylinders 70 and 74 can be made of several parts.
  • a needle 76 is slidably mounted inside this second cylinder 74, between a rest position and an activated position, under the action of first return means 78, composed of a compression spring.
  • the needle 76 is provided with a base 76a, mounted in a sealed manner in the second cylinder 74, of a rod 76b, configured to be able to close, in the rest position of the pump, an orifice 80 formed on the lower end of the second cylinder 74, and an end 76c, projecting slightly inside the metering chamber 72 when the needle 76 is in the activated position.
  • This end 76c is configured to press the solid central portion 58 of the plating element 36 when the movable portion 18 is in the activated position, so as to guarantee the opening of the orifice 80 during the priming phase of the device, so as to push the air from the metering chamber 72 to the top of the device.
  • the movable portion 18 further comprises an element 82, fixedly mounted relative to the first 70 and second 74 cylinders, and delimiting a distribution chamber 84.
  • the element 82 could be made in one piece with the elements 70 and / or 74. It is generally on the element 82 that the dispensing nozzle 14 of the device is mounted, the chamber 84 being connected to a dispensing nozzle provided on this nozzle. Note that the chamber 84 is not necessarily present on the support 82, it can be provided only a connection of the support 82 and / or the cylinder 74 with the dispensing nozzle 14.
  • the element 82 of the movable part 18 is provided with an inner skirt 86 and an outer skirt 88, between which second return means 90 are housed.
  • the return means 90 are composed of a spring in compression, bearing on the one hand on the element 82, between the two skirts 86, 88, on the other hand on the fixed part 16, at the bottom of a sleeve 92. With the spring 90, the movable portion 18, movable relative to the fixed portion 16 between a rest position and an activated position, is held in the up position, as shown in FIG. figure 1 . Inside the inner skirt 86, the element 82 also has a bearing seat of the first spring 78.
  • the element 82 further comprises means ensuring the passage of the liquid from the metering chamber 72 to the dispensing tip 14, specifically to the chamber dispensing 84, arranged in particular between the second cylinder 74 and the inner skirt 86, preferably so as to ensure the passage of liquid without the liquid being in contact with the return means 78 and 90.
  • This device further comprises a dispensing nozzle 14 comprising a casing 98 comprising a duct 100 opening in its upper part on a spray orifice 102 of small diameter.
  • a needle 104 inserted into a swirl chamber 106 of the conduit 100, valve distribution form. All of the needle 104, vortex chamber 106 and spray port 102 form a spray nozzle.
  • the needle 104 closes the spray orifice 102 and is held in this position by return means 108 which bear on the lower end of the needle 104 and on a seat carried by the element 110.
  • the envelope also comprises fingertips 112 which allow the user to operate the device.
  • the membrane 34 is placed inside the plating element 36.
  • the diaphragm 34 can be seen in the undeformed state.
  • These two elements are then brought back to the upper end of the support 32 or vice versa.
  • These three parts are firmly held together by snapping the annular rib 64 of the support 32 in the groove 62 carried by the inner surface of the skirt 52.
  • the proper positioning of the membrane 34 and the plating element 36 is ensured by above the cooperation of the groove 62 and the rib 64, by abutment of the lower end of the skirt 52 against the shoulder 68 of the support 32.
  • the plating surface 50 elastically deforms the membrane 34, and more particularly the perforated wall 46, and plates the central disc 42 against the support seat 40 of the support 32 in the product blocking configuration, as shown in FIG. figure 4 .
  • the membrane 34 is thus sandwiched between the support 32 and the plating element 36.
  • the piston 28 is then attached to the pump body 20 on which the dip tube 26 is mounted.
  • the moving part of the pump formed by the first 70 and second 74 cylinders, the needle 76, the element 82, the sleeve 92 and the springs 78 and 90 is then assembled.
  • the various elements are held together by mechanical clamping or by snapping.
  • This subassembly is then attached to the fixed part 16 of the pump.
  • the pump fixing system is then brought back to the reservoir, in this case a crimp ring 30. It would also be possible to provide a screw ring or a snap-on system also called "snap-on".
  • the last step is to assemble the different parts forming the dispensing tip and to bring them back to the pump.
  • the wall of the distribution chamber 84 is engaged in a housing carried by the lower end of the element 110 of the dispensing nozzle.
  • the tip may itself be capped by a protective cover (not shown).
  • the device 10 is ready to be mounted on a reservoir by crimping the clamp 30 on the neck of the reservoir.
  • the lower end of the dip tube 26 When mounted on the reservoir, the lower end of the dip tube 26 is immersed in the product to be dispensed.
  • the movable portion 18 of the pump Before the first use, the movable portion 18 of the pump is in the up position, or rest position, and the metering chamber 72 is filled with air.
  • the membrane 34 is pressed against the support 32 in the product blocking configuration.
  • the spring 78 exerts on the needle 76 a force which holds the needle in the closed configuration of the orifice 80 by cooperation with the rod 76b and the spring 90 keeps the movable portion 18 of the pump in the up position.
  • the user presses on the mobile part 18 of the pump and more particularly on the finger-holders 112 of the dispensing nozzle 14 by exerting a force going from the top to the bottom (schematized by arrow 96). Under the action of this force, the mobile part descends and compresses the air contained in the metering chamber 72.
  • the end 76c of the needle 76 abuts against the solid central portion 58 of the plating element 36
  • the stem 76b of the needle no longer closes the orifice 80 of the second cylinder 74 and the air can escape freely in the upper part of the device; the moving part 18 is then in the low position, or activated position, and the metering chamber 72 has its minimum volume.
  • the spring 90 drives the movable portion upwards in the opposite direction to that of the arrow 96 and the spring 78 recalls the needle 76 in the orifice closure configuration.
  • 80 which causes a depression in the metering chamber 72. This depression causes the separation of the central disk of the membrane 34 of the support 32, by elastic deformation of the membrane 34 and more particularly of the perforated wall 46 and or disk central 42: the membrane 34 is then in product passage configuration. In this configuration, the deformation experienced by the membrane 34 corresponds to an amplification of the deformation provided in blocking configuration, so as to detach from the support 32 to let the product.
  • the product can therefore cross the non-return valve, pass through the orifices of the perforated wall 46 and enter the metering chamber 72.
  • the additional deformation of the membrane 34 is limited by the solid central portion 58 of the wall transverse 54 of the plating element 36. Thus, the removal of the membrane is avoided.
  • the movable portion 18 is again in the up position, the metering chamber 72 is filled with product and the membrane 34 is again pressed against the support 32 in the product blocking configuration.
  • the product contained can not escape from the metering chamber, nor the air enter because the seal is provided by the first 56 sealing means, between the first cylinder 70 of the movable part, and by the second means sealing member 66 between the support 32 and the plating element 36.
  • the membrane 34 forming a non-return valve and the needle 76 are in the product blocking configuration.
  • the user When the user wishes to deliver a dose of product, as before, he actuates the device by exerting a force from above downwards on the finger rest 112 (in the direction of the arrow 96), under the action of this force, the moving part 18 and therefore the first 70 and second 74 cylinders begin to descend, the volume of the metering chamber 72 decreases and puts the product it contains under pressure.
  • This product can not escape to the reservoir or out of the pump thanks to the first 56 and second 64 sealing means and the membrane 34 forming a non-return valve. It therefore exerts an upward pressure on the needle 76, so that the rod 76b is displaced and no longer occludes the orifice 80. The product can thus escape from the chamber 72.
  • the product Once the product has passed through the orifice 80, it flows between the second cylinder 74 and the inner skirt 86 via a channel 114 arranged in the wall of the second cylinder. It then passes into the dispensing chamber 84 to the dispensing nozzle 14. Through channels arranged in the element 110, the liquid flows between the vortex chamber 106 and the duct 100 and between the vortex chamber and the needle 106. The product exerts a downward pressure on the needle 106 which, moving in the direction of the arrow 96, allows the product to be sprayed through the spray orifice 102.
  • the moving part 18 Once the moving part 18 has reached its low position, that is to say once the dose of product has been dispensed, the user releases is resting on the moving part 18 and the metering chamber 72 fills up. again product as previously described.
  • the skirt 52 is made of a material that is less permeable to air than the material of the membrane, and that as a result, the diffusion of air through its wall is particularly weak. where better accuracy in the delivered doses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)

Claims (10)

  1. Pumpe (12) zur Ausgabe eines Produkts, aufweisend einen Kolben (28), der in einer Dosierkammer (72) verschiebbar gelagert ist, wobei der Kolben (28) Folgendes aufweist:
    - einen Träger (32),
    - eine Membran (34), die ein Rückschlagventil mit Durchlass des Produkts in die Dosierkammer (72) bildet und aus einem ersten Material ist,
    dadurch gekennzeichnet, dass der Kolben Folgendes aufweist:
    - ein Element (36) zum Andrücken der Membran (34) gegen den Träger (32), das eine Schürze (52) aufweist, die Abdichtungsmittel (56) trägt, welche die Verschiebebewegung des Kolbens (28) in der Dosierkammer (72) sicherstellen, wobei das Andrückelement (36) aus einem zweiten Material ist, das von dem ersten Material der Membran verschieden ist, an der Membran (34) angebracht ist und eine Fläche (50) zum Andrücken der Membran umfasst, welche die Membran (34) in Verformung gegen den Träger (32) hält, um ein Schließen des Rückschlagventils sicherstellt.
  2. Pumpe (12) nach dem vorhergehenden Anspruch, wobei die Membran (34) aus Silikon, aus Propylen-/Ethylencopolymeren, aus Polyether-Blockamiden, aus Polyvinyl, aus Terpolymeren aus Ethylen, Propylen und einem Dien (EPDM), aus Styrol-Butadien-Blockcopolymer (SBS), aus Styrol-Ethylen-Butadien-Blockcopolymer (SEBS-SIS), aus Polyurethan, aus Butyl- oder Nitril-Kautschuk; aus Latex aus Fluorelastomeren oder aus einem Gemisch aus Polypropylen mit einem der folgenden Elastomere: Styrol-Ethylen-Butadien-Blockcopolymere (SEBS-SIS), Terpolymere aus Ethylen, Propylen und einem Dien (EPDM), Styrol-Butadien-Blockcopolymere (SBS), ist.
  3. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei das Andrückelement (36) aus Polyethylen hoher oder niedriger Dichte, aus Polypropylen, aus Polyester, aus Polyacetal, aus Ethylenvinylacetat oder Gemischen davon ist.
  4. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei die Schürze (52) ein oberes Ende und ein unteres Ende umfasst und die verschiebbaren Abdichtungsmittel (56) durch das obere Ende der Schürze getragen werden und zum Beispiel eine Rotationslippe umfassen.
  5. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei die Membran (34) eine mittlere Scheibe (42) umfasst, die Mittel trägt, die durch Zusammenwirken mit dem Träger (32) ein Rückschlagventil bilden, und einen Positionierrand (44) umfasst, der mit der Scheibe (42) durch eine mit Löchern versehene Wand (46), die das Produkt durchlässt ist, verbunden ist.
  6. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei der Träger (32) eine im Wesentlichen zylindrische Außenwand umfasst, die zweite Abdichtungsmittel (66) trägt, die eine abgedichtete Befestigung der Schürze (52) an dem Träger (32) gestatten.
  7. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei der Träger (32) einen Absatz (68) umfasst, gegen den das untere Ende der Schürze (52) in Anschlag kommt.
  8. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei das Andrückelement (36) Mittel zur Befestigung (62) an dem Träger (32) durch Einrasten aufweist, die eine Nut (62) umfassen, die mit einem Zapfen oder einer ringförmigen Rippe (64) zusammenwirken, die an dem Träger (32) realisiert sind.
  9. Pumpe (12) nach einem der vorhergehenden Ansprüche, wobei das Andrückelement (36) eine Querwand (54) umfasst, die einstückig mit der Schürze (52) ausgebildet ist und einen massiven mittleren Teil (58) umfasst.
  10. Pumpe (12) nach einem der vorhergehenden Ansprüche, die für die Ausgabe des Produkts ohne Luftaufnahme ausgestaltet ist.
EP11735473.8A 2010-06-10 2011-06-09 Pumpe zur ausgabe eines produkts mit einem gleitkolben in der messkammer Not-in-force EP2579993B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1054607A FR2961191B1 (fr) 2010-06-10 2010-06-10 Pompe pour la delivrance d'un produit, comportant un piston coulissant dans une chambre de dosage
PCT/FR2011/051319 WO2011154664A1 (fr) 2010-06-10 2011-06-09 Pompe pour la delivrance d'un produit, comportant un piston coulissant dans une chambre de dosage

Publications (2)

Publication Number Publication Date
EP2579993A1 EP2579993A1 (de) 2013-04-17
EP2579993B1 true EP2579993B1 (de) 2019-01-02

Family

ID=43533134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11735473.8A Not-in-force EP2579993B1 (de) 2010-06-10 2011-06-09 Pumpe zur ausgabe eines produkts mit einem gleitkolben in der messkammer

Country Status (5)

Country Link
US (1) US9151281B2 (de)
EP (1) EP2579993B1 (de)
CN (1) CN103037979B (de)
FR (1) FR2961191B1 (de)
WO (1) WO2011154664A1 (de)

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WO2014089082A1 (en) * 2012-12-04 2014-06-12 Aptargroup, Inc. Fluent product dispensing package and diaphragm pump for use therein
FR3041548B1 (fr) * 2015-09-24 2017-11-03 Nemera La Verpilliere Dispositif pour la delivrance d'un produit par pulverisation, a embout perfectionne.
CN105642470A (zh) * 2015-12-25 2016-06-08 中山市美捷时包装制品有限公司 一种多角度使用手枪泵
EP3487353A4 (de) * 2016-07-22 2020-04-08 HCT Group Holdings Limited Pull-down-pumpenaktuator
FR3063661B1 (fr) * 2017-03-07 2021-05-21 Promens Sa Dispositif de distribution d'un produit avec amorcage ameliore
CN107583776B (zh) * 2017-10-25 2018-07-27 绍兴市华创聚氨酯有限公司 一种用于喷涂聚氨酯的喷枪
US10617832B2 (en) * 2017-11-22 2020-04-14 Southwest Research Institute High precision, low dose atomizer
WO2019182745A1 (en) 2018-03-19 2019-09-26 Bryn Pharma, LLC Epinephrine spray formulations
WO2020048616A1 (de) * 2018-09-07 2020-03-12 Wacker Chemie Ag Verfahren zur verpackung von siliconmassen
USD1021066S1 (en) 2022-03-03 2024-04-02 Consort Medical Limited Inhaler
USD1021067S1 (en) 2022-04-08 2024-04-02 Consort Medical Limited Inhaler

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US3942916A (en) * 1974-02-05 1976-03-09 Autochem Instrument Ab Dosing device particularly for small quantities of liquid
US4646781A (en) * 1985-05-07 1987-03-03 Pacesetter Infusion, Ltd. Diaphragm valve for medication infusion pump
US4823974A (en) * 1987-10-20 1989-04-25 Crosser Hayward B Chill cylinder for beverage containers
FR2664353B1 (fr) * 1990-07-03 1992-10-09 Valois Clapet pour pulverisateur.
DE4039814A1 (de) * 1990-12-13 1992-06-17 Logica Medizintechnik Gmbh Rueckschlagventil, insbesondere fuer medizinische infusionsgeraete
FR2699390B1 (fr) * 1992-12-23 1995-02-10 Sodex Hexotol Sa Appareil distributeur pour produits liquides.
US5620314A (en) * 1995-02-21 1997-04-15 Worton; David M. Hand-operated liquid pump with removable parts
US5927957A (en) * 1996-06-19 1999-07-27 Kennedy; Craig A. Plunger device and method of making and using the same thereof
FR2765560B1 (fr) * 1997-07-02 1999-08-13 Oreal Distributeur pour un produit liquide ou pateux comportant des moyens de pompage ameliores
IL123227A0 (en) * 1998-02-08 1998-09-24 3By Ltd Check valve
FR2826691B1 (fr) * 2001-07-02 2003-09-26 Solvay Circuit de reaspiration des gaz de carter d'un moteur a combustion interne
DE10242110A1 (de) * 2002-09-11 2004-03-25 Thinxxs Gmbh Mikropumpe und Verfahren zu ihrer Herstellung
FR2885890B1 (fr) * 2005-05-20 2007-07-20 Rexam Dispensing Systems Sas Dispositif pour la delivrance et l'admission d'un produit liquide
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Also Published As

Publication number Publication date
US9151281B2 (en) 2015-10-06
WO2011154664A1 (fr) 2011-12-15
FR2961191B1 (fr) 2012-07-27
EP2579993A1 (de) 2013-04-17
FR2961191A1 (fr) 2011-12-16
CN103037979A (zh) 2013-04-10
US20130164156A1 (en) 2013-06-27
CN103037979B (zh) 2016-10-19

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