EP4665431A1 - Systeme de dosage bidose pour dispositif de distribution de produit fluide - Google Patents
Systeme de dosage bidose pour dispositif de distribution de produit fluideInfo
- Publication number
- EP4665431A1 EP4665431A1 EP24714229.2A EP24714229A EP4665431A1 EP 4665431 A1 EP4665431 A1 EP 4665431A1 EP 24714229 A EP24714229 A EP 24714229A EP 4665431 A1 EP4665431 A1 EP 4665431A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dosing
- dosing element
- dose
- reservoir
- piston rod
- 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.)
- Pending
Links
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
- B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
- B05B11/025—Membranes or pistons acting on the contents inside the container, e.g. follower pistons with stepwise advancement of the piston, e.g. for spraying a predetermined quantity of content
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/3159—Dose expelling manners
- A61M5/31593—Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir
- A61M5/31595—Pre-defined multi-dose administration by repeated overcoming of means blocking the free advancing movement of piston rod, e.g. by tearing or de-blocking
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31501—Means for blocking or restricting the movement of the rod or piston
- A61M2005/31508—Means for blocking or restricting the movement of the rod or piston provided on the piston-rod
Definitions
- Double dose dosing system for fluid product dispensing device Double dose dosing system for fluid product dispensing device
- the present invention relates to a two-dose dosing system and a fluid product dispensing device comprising such a two-dose dosing system.
- Fluid product dispensing devices of the dual-dose type are well known. They comprise a reservoir containing two doses of fluid product to be dispensed in two successive actuations.
- the reservoir is of the syringe type, with a piston secured to a piston rod that slides in a cylindrical reservoir, there are dual-dose dosing systems that make it possible to separate the piston stroke into two half-strokes, one for each dose.
- These dosing systems are often complex and therefore expensive to manufacture and assemble, and generally, they require a modification of the syringe and/or the piston rod.
- a drawback of existing devices concerns the quality of the spray generated, which may depend on the actuation performed by the user, in particular the speed and force of actuation, and differ between the two doses.
- it is desirable to generate a calibrated spray i.e. one whose properties are substantially similar for the two doses, regardless of the way in which the user actuates the device.
- the present invention aims to provide a two-dose dosing system and a fluid product dispensing device which do not reproduce the aforementioned drawbacks.
- the present invention aims in particular to provide a two-dose dosing system which adapts to a fluid product dispensing device. having a standard syringe type reservoir, in particular without having to modify the reservoir and/or the piston rod.
- the present invention also aims to provide a two-dose dosing system and a fluid product dispensing device which make it possible to ensure a calibrated and reproducible spray for both doses, in particular independently of the manner in which the user operates the device.
- the present invention also aims to provide a two-dose dosing system and a fluid product dispensing device which guarantee precise dosing for both doses.
- the present invention also aims to provide a two-dose dosing system and a fluid product dispensing device which are simple and inexpensive to manufacture and assemble.
- the present invention therefore relates to a two-dose dosing system for a fluid product dispensing device, said device comprising a syringe-type reservoir containing fluid product, a piston secured to a piston rod being slidably mounted in said reservoir to dispense said fluid product, said dosing system comprising a first dosing element, a second dosing element and a third dosing element, said first dosing element being fixed in an axially non-movable manner on said piston rod, so that it moves axially together with it, said third dosing element being axially non-movable relative to said reservoir, said second dosing element being arranged between said first and third dosing elements, said second dosing element sliding relative to said third dosing element when dispensing the first dose and relative to said first dosing element when dispensing the second dose.
- each dosing element is C-shaped, with an axial opening over its entire height allowing it to be placed around said piston rod.
- said piston rod comprises at its rear axial end edge a support flange on which the user presses when the actuation, said first dosing element comprising a housing adapted to be fixed on said support flange.
- said reservoir is formed by a hollow cylinder provided with a collar at its rear axial end edge, said third dosing element comprising a front axial edge which, in use, rests on said collar.
- said first and third dosing elements have approximately identical inner and/or outer diameters, said second dosing element having an outer diameter smaller than the inner diameter of said first and third dosing elements, such that said second dosing element slides inside said third dosing element when dispensing the first dose and inside said first dosing element when dispensing the second dose.
- said third dosing element is removed from said piston rod after dispensing of the first dose, to allow dispensing of the second dose.
- said second dosing element is connected to said third dosing element by first resistance means and to said first dosing element by second resistance means.
- said first resistance means generate a lower resistance than said second resistance means, so that upon actuation, it is first said first resistance means which are overcome to dispense the first dose.
- said first, second and third dosing elements are formed by three separate parts assembled together.
- said first resistance means comprise an external radial projection of said second dosing element, extending radially outwards, which cooperates with an internal groove formed in said third dosing element.
- said external radial projection is formed at a front axial edge of said second metering element, and said groove internal is formed proximate a rear axial edge of said third metering element, being defined between said rear axial edge and an internal radial projection of said third metering element.
- said first, second and third dosing elements are molded in a single piece.
- said first resistance means are formed by one or more first breakable bridge(s), and said second resistance means are formed by one or more second breakable bridge(s).
- said first and third dosing elements are connected to each other in a captive manner, in particular via a wire.
- the first dose is defined by the axial displacement of said first dosing element, axially fixed relative to said piston rod, relative to said third dosing element, axially fixed relative to said reservoir.
- the second dose is defined by the axial displacement of said first dosing element, axially fixed relative to said piston rod, relative to said second dosing element, when it is axially fixed relative to said reservoir.
- the present invention also relates to a fluid product dispensing device comprising a syringe-type reservoir, a piston mounted to slide in said reservoir, said piston being secured to a piston rod, and a two-dose dosing system as described above, said dosing system being assembled on said piston rod.
- the device comprises a nasal spray head provided with a spray orifice mounted on said reservoir.
- Figure 1 is a schematic perspective view of a fluid product dispensing device comprising a two-dose dosing system according to a first embodiment, in the rest position,
- Figure 2 is a detail view of Figure 1, showing the double-dose dosing system
- Figure 3 is a detail view of Figure 2, showing the first means of resistance
- Figure 4 is a partial schematic exploded perspective view of a fluid product dispensing device comprising a two-dose dosing system according to a second embodiment, before assembly of the two-dose dosing system on the piston rod of the device,
- Figure 5 is a view similar to that of Figure 4, after assembly of the double-dose dosing system on the piston rod and before the first actuation,
- Figure 6 is a view similar to Figure 5, after delivery of the first dose
- Figure 7 is a view similar to Figure 6, after delivery of the second dose
- Figure 8 is a schematic perspective detail view, illustrating a first breakable bridge forming first resistance means for the first dose
- Figure 9 is a detailed schematic in perspective, illustrating a second breakable bridge forming second resistance means for the second dose
- Figure 10 is a view similar to that of Figure 5, showing an alternative embodiment of the second embodiment, and
- Figures 11 to 13 are views similar to that of Figure 10, showing respectively the positions after dispensing of the first dose, before and after dispensing of the second dose.
- axial and radial refer to the longitudinal central axis A of the distribution device shown in Figure 1.
- front and rear refers to the direction of flow of the fluid product when the device is actuated.
- Figure 1 very schematically represents a spray head 10 assembled on a reservoir 1 of the syringe type.
- a removable protective cover can be assembled on the spray head before using the device.
- the reservoir 1 contains two doses of fluid product, generally a liquid, which are distributed in two successive actuations.
- suitable dispensing means are provided in the reservoir 1 to dispense its contents.
- these dispensing means comprise a piston 2 slidably mounted in the reservoir and secured to a piston rod 3 actuated by the user at the time of actuation.
- the reservoir 1 is formed by a hollow cylinder provided with a collar 4 at its rear axial end edge.
- the piston rod 3 has at its rear axial end edge a support flange 5 on which the user presses during actuation.
- the spray head 10 may conventionally comprise a body provided with a spray orifice.
- the spray head 10 is of the nasal type, with an elongated body for penetrating a nostril and the spray orifice arranged at the front axial end of said body, in the direction of flow of the fluid product during actuation.
- an insert may be arranged upstream of the spray orifice to generate a spray, for example by means of a well-known spray profile.
- Other types of spray head are also conceivable.
- a two-dose dosing system 20 is provided which is fixed to the piston rod 3, between the collar 4 of the reservoir 1 and the support flange 5 of the piston rod 3.
- the first metering element 21 is fixed in an axially non-movable manner on the piston rod 3, so that it moves together with it.
- it comprises a housing 25 adapted to receive the support flange 5 of the piston rod 3.
- the first and third dosing elements 21, 23 have approximately identical inner and/or outer diameters, while the second dosing element 22 has an outer diameter smaller than the inner diameter of the first and third dosing elements 21, 23.
- the second dosing element 22 can slide inside the third dosing element 23 when dispensing the first dose and inside the first dosing element 21 when dispensing the second dose.
- the front axial edge 28 of the second dosing element 22 abuts the collar 4 of the reservoir 1, like the front axial edge 24 of the third dosing element 23.
- the two doses have the same volume, and in this case, the dosing elements 21, 22, 23 have substantially identical lengths.
- two doses of different volumes could be produced by producing dosing elements 21, 22, 23 of different lengths.
- Figures 4 to 9 illustrate a second embodiment, in which the first, second and third metering elements 21, 22, 23 are molded in a single piece.
- the first and second resistance means 26, 27 which are advantageously formed by one or more first and second breakable bridges.
- the force required to break the first breakable bridge(s) is less than that required to break the second breakable bridge(s).
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2301329A FR3145750B1 (fr) | 2023-02-13 | 2023-02-13 | Système de dosage bidose pour dispositif de distribution de produit fluide |
| PCT/FR2024/050185 WO2024170848A1 (fr) | 2023-02-13 | 2024-02-12 | Systeme de dosage bidose pour dispositif de distribution de produit fluide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4665431A1 true EP4665431A1 (fr) | 2025-12-24 |
Family
ID=86007395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24714229.2A Pending EP4665431A1 (fr) | 2023-02-13 | 2024-02-12 | Systeme de dosage bidose pour dispositif de distribution de produit fluide |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4665431A1 (fr) |
| CN (1) | CN121013743A (fr) |
| FR (1) | FR3145750B1 (fr) |
| WO (1) | WO2024170848A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5951526A (en) * | 1997-09-24 | 1999-09-14 | Korisch; Marina | Syringe holder with integral dose divider |
| AU2010271282B2 (en) * | 2009-07-10 | 2015-05-07 | Becton, Dickinson And Company | Flush syringe assembly |
| CA2869155C (fr) * | 2012-03-30 | 2017-01-31 | Yoshino Kogyosho Co., Ltd. | Dispositif de pulverisation de type seringue doseuse |
| CN107735127A (zh) * | 2015-07-01 | 2018-02-23 | 益普生制药公司 | 注射器组件 |
| US11389597B2 (en) * | 2016-03-16 | 2022-07-19 | West Pharma. Services IL, Ltd. | Staged telescopic screw assembly having different visual indicators |
| US11097061B2 (en) * | 2018-02-09 | 2021-08-24 | Icon Bioscience, Inc. | Systems, kits and methods for loading and delivering a small volume dose from a syringe |
| FR3115772B1 (fr) * | 2020-11-02 | 2022-10-28 | Aptar France Sas | Dispositif de distribution de produit fluide |
-
2023
- 2023-02-13 FR FR2301329A patent/FR3145750B1/fr active Active
-
2024
- 2024-02-12 CN CN202480025154.8A patent/CN121013743A/zh active Pending
- 2024-02-12 WO PCT/FR2024/050185 patent/WO2024170848A1/fr not_active Ceased
- 2024-02-12 EP EP24714229.2A patent/EP4665431A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024170848A1 (fr) | 2024-08-22 |
| FR3145750A1 (fr) | 2024-08-16 |
| FR3145750B1 (fr) | 2025-04-25 |
| CN121013743A (zh) | 2025-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250910 |
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| AK | Designated contracting states |
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| P01 | Opt-out of the competence of the unified patent court (upc) registered |
Free format text: CASE NUMBER: UPC_APP_0010143_4665431/2026 Effective date: 20260317 |