EP4475997A1 - Dispositif de distribution de produit fluide - Google Patents
Dispositif de distribution de produit fluideInfo
- Publication number
- EP4475997A1 EP4475997A1 EP23708526.1A EP23708526A EP4475997A1 EP 4475997 A1 EP4475997 A1 EP 4475997A1 EP 23708526 A EP23708526 A EP 23708526A EP 4475997 A1 EP4475997 A1 EP 4475997A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cannula
- dispensing
- expulsion channel
- head
- reservoir
- 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
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
- B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
- B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/3073—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a deflector acting as a valve in co-operation with the outlet orifice
-
- 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
Definitions
- the present invention relates to a device for dispensing a fluid product, in particular intended for the administration of a pharmaceutical product to small animals, such as for example mice.
- the state-of-the-art devices used to administer doses of drugs to small animals, such as rodents, in particular mice, are generally single-use single-dose devices, in which the entire dose of product is dispensed. in a single actuation.
- drug trials on animals, in particular rodents such as mice are generally carried out on about fifteen rodents, which therefore requires about fifteen devices.
- the doses are usually not adjustable, so a different device is needed for each different dosage.
- these devices generally use a cannula of small diameter to distribute the fluid product.
- this produces a dose distribution in the form of a rectilinear jet, whereas it is preferable to be able to carry out this distribution in the form of a spray.
- a spray with a Dv50 between 15 and 40 ⁇ m is desirable.
- the object of the present invention is to provide a fluid dispenser device which does not reproduce the aforementioned drawbacks.
- the object of the present invention is in particular to provide a fluid product dispensing device which makes it possible to dispense several doses in several successive uses.
- Another object of the present invention is to provide a fluid dispenser device which makes it possible to modify the dosage for each use.
- Another object of the present invention is to provide a fluid product dispensing device which makes it possible to dispense the fluid product at the outlet of a small-diameter cannula in the form of a spray.
- the present invention also aims to provide a fluid dispenser device that is simple and reliable to use.
- the present invention also aims to provide a fluid dispenser device that is simple and inexpensive to manufacture and assemble.
- the subject of the present invention is therefore a fluid product dispensing device comprising a reservoir adapted to contain at least one dose of fluid product and a dispensing head fixed to said reservoir, said dispensing head comprising a cannula provided with a dispensing orifice and defining an expulsion channel, said dispensing orifice having a spray tip partially inserted into said expulsion channel, said spray tip having a head portion disposed outside of said cannula and a stem portion inserted into said expulsion channel, said head part extending the stem part and having a diameter greater than the diameter of said stem part to define an impact surface downstream of said dispensing orifice, so that during actuation, said fluid product flowing under pressure in said expulsion channel impacts said impact surface to generate a spray, wherein the diameter of said rod part is smaller than the diameter of said expulsion channel, said rod part being centered in said expulsion channel, said stem part being fixed in said expulsion channel, in particular by wedging at one or more deformation point(s) made on said cannula
- the maximum external diameter of said head part is similar, in particular identical, to the external diameter of said cannula.
- said head part is spherical, so that said impact surface is curved.
- said head part is conical at the level of its junction with said stem part, so that said impact surface is flat and forms a cone that flares outwards.
- said dispensing head is removably connected to said reservoir.
- said dispensing head comprises a fixing member adapted to be fixed removably on said reservoir, in particular via a Luer-type fixing, said cannula being fixed, in particular welded, to said fixing member.
- the diameter of said expulsion channel is less than 1 mm, advantageously less than 0.8 mm, preferably about 0.7 mm.
- said cannula is curved or bent.
- said reservoir is a syringe comprising a body and a piston sliding in said body during actuation.
- the spray generated has a Dv50 of less than 40 ⁇ m, in particular around 30 ⁇ m.
- FIG. 1 is a schematic view in cross section of a fluid dispenser device according to an advantageous embodiment
- FIG. 2 is a detail view of a spray nozzle according to a first advantageous embodiment
- FIG. 3 is a view similar to that of Figure 2, showing a spray nozzle according to a second advantageous embodiment
- Figure 4 is a partial schematic perspective view of the spray nozzle of Figure 3
- Figure 5 is a partial schematic perspective view cutout of the spray tip in Figures 3 and 4.
- the fluid product dispensing device represented in FIG. 1 comprises a reservoir 10 containing one or more doses of fluid product and a dispensing head 20 comprising a cannula 21 having a dispensing orifice 22 provided with a spray nozzle 25, said cannula 21 being fixed in a fixing member 23 adapted to be fixed removably on the reservoir 10.
- the cannula 21 forms a hollow tube defining an expulsion channel 24 of small diameter, typically less than 1 mm, advantageously less than 0.8 mm, preferably about 0.7 mm.
- the cannula 21 is bent, but it could be straight or curved, or of any suitable shape. It may be rigid, or as a variant partially or completely flexible.
- the rear part of the cannula 21 is welded to the fixing member 23, but other fixing means can be envisaged, for example press fitting or gluing.
- Reservoir 10 is advantageously a syringe comprising a body 11 and a piston 12 sliding in said body 11 during actuation.
- a piston rod 13 may be attached to piston 12 to allow the user to actuate the device.
- the body 11 has an open front end adapted to removably receive said fixing member 23.
- This fixing member 23 can be fixed on the reservoir 10 for example via a fixing of the conventional Luer Lock type.
- Other fastening means are possible, for example screwing or snap-fastening.
- the spray nozzle 25 provided at the dispensing orifice 22 of the cannula 21 makes it possible to dispense the fluid product in the form of a spray.
- This spray nozzle 25 forms an insert which is partially inserted into the expulsion channel 24 of the cannula and which comprises a head part 26 and a stem part 28.
- the rod part 28 enters the expulsion channel 24, and therefore has a diameter smaller than the diameter of said expulsion channel 24.
- the rod part 28 is centered in the expulsion channel 24, which therefore extends around said stem part 28.
- the stem part 28 is fixed in the expulsion channel 24 by wedging at one or more point(s) of deformation 29 made on the cannula 21, as visible on Figure 5.
- the head part 26 is disposed outside the cannula 21 and extends the stem part 28. It has a diameter greater than the diameter of the stem part 28 and defines an inclined impact surface 27 after the exit 22 of the cannula 21 for the fluid flowing in the expulsion channel
- the fluid product flows under pressure in the expulsion channel 24, around the stem part 28, and impacts the impact surface 27, which splits the particles of the fluid product. and generates a spray.
- the properties of the generated spray can be modified.
- the maximum outer diameter of the head part 26 is similar to the outer diameter of the cannula 21, preferably about the same.
- the presence of the spray nozzle 25 does not increase the external diameter of the cannula, and does not modify its use.
- FIG. 2 A first embodiment is shown in Figure 2, in which the head portion 26 is spherical, so that the impact surface 27 is curved.
- FIG. 3 A second embodiment is shown in Figure 3, in which the head portion 26 is tapered at its junction with the shaft portion 28, so that the impact surface 27 is planar and forms a taper. flaring outward.
- the invention makes it possible to generate a correct spray, based on the one hand on the geometry and the velocity of the spray, and on the other hand on the particle size of the drops of spray (DSD: "Drop Size Distribution”); thus, the two embodiments described above make it possible to obtain a Dv50 of less than 50 ⁇ m;
- the second embodiment has improved spray properties, with an average Dv50 at 30 ⁇ m, whereas the first embodiment gives an average Dv50 at 40 ⁇ m.
- the reservoir 10 Before the first use, the reservoir 10 can be empty and separated from the dispensing head 20. It is then preferably closed by a plug (not shown), in a known manner.
- the user who wishes to use the device removes the cap from the reservoir 10 and fills the latter with fluid product. For example, in the case of a syringe, it draws in fluid product from a reserve of fluid product, by pulling the piston 12 away from the front end of the body 11 .
- Reservoir 10 can be filled with one dose of chosen volume, or alternatively with two or more doses.
- the device is then ready for its first active use, to dispense a dose of fluid product.
- Fluid contained in reservoir 10 is then expelled into cannula 21 and then sprayed through spray nozzle 25.
- all of the fluid contained in reservoir 10 is dispensed in a single actuation.
- the contents of the reservoir can be dispensed in two or more successive actuations.
- the user can remove the dispensing head 20, and refill the reservoir 10 in a known manner for the next use of the device.
- spray nozzle described above could also be used with a pre-filled reservoir and/or a disposable single-use device after use.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2201105A FR3132447A1 (fr) | 2022-02-08 | 2022-02-08 | Dispositif de distribution de produit fluide |
| PCT/FR2023/050167 WO2023152446A1 (fr) | 2022-02-08 | 2023-02-08 | Dispositif de distribution de produit fluide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4475997A1 true EP4475997A1 (fr) | 2024-12-18 |
Family
ID=81346610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23708526.1A Pending EP4475997A1 (fr) | 2022-02-08 | 2023-02-08 | Dispositif de distribution de produit fluide |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250099984A1 (fr) |
| EP (1) | EP4475997A1 (fr) |
| CN (1) | CN118715062A (fr) |
| FR (1) | FR3132447A1 (fr) |
| WO (1) | WO2023152446A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737105A (en) * | 1971-09-13 | 1973-06-05 | Peabody Engineering Corp | Double spray nozzle |
| DE2263266A1 (de) * | 1972-12-23 | 1974-07-11 | Daimler Benz Ag | Duesenkopf zum auftragen von ueberzugsstoffen |
| US5372311A (en) * | 1993-08-04 | 1994-12-13 | Nye; Norman H. | Spray type pressure dispensing container |
| CA2393408C (fr) * | 1999-12-06 | 2010-05-04 | National Research Council Of Canada | Buse atomisante pour pulverisations fines et nebulisation |
| US9010572B2 (en) * | 2012-12-11 | 2015-04-21 | Altachem N. V. | Tip seal having a position indicator, the tip seal being configured to dispense a foam solution |
| US10654051B2 (en) * | 2017-01-31 | 2020-05-19 | Packaging Concepts Associates Holdings, Inc. | Droplet dispensing assembly and converter attachment for spray-to-droplet conversion |
| FR3106488B1 (fr) * | 2020-01-27 | 2022-01-21 | Aptar France Sas | Dispositif de distribution de produit pulvérulent |
-
2022
- 2022-02-08 FR FR2201105A patent/FR3132447A1/fr active Pending
-
2023
- 2023-02-08 CN CN202380022316.8A patent/CN118715062A/zh active Pending
- 2023-02-08 US US18/836,589 patent/US20250099984A1/en active Pending
- 2023-02-08 WO PCT/FR2023/050167 patent/WO2023152446A1/fr not_active Ceased
- 2023-02-08 EP EP23708526.1A patent/EP4475997A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250099984A1 (en) | 2025-03-27 |
| WO2023152446A1 (fr) | 2023-08-17 |
| FR3132447A1 (fr) | 2023-08-11 |
| CN118715062A (zh) | 2024-09-27 |
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Legal Events
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