WO2016142523A1 - A device for atomising a liquid - Google Patents

A device for atomising a liquid Download PDF

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Publication number
WO2016142523A1
WO2016142523A1 PCT/EP2016/055316 EP2016055316W WO2016142523A1 WO 2016142523 A1 WO2016142523 A1 WO 2016142523A1 EP 2016055316 W EP2016055316 W EP 2016055316W WO 2016142523 A1 WO2016142523 A1 WO 2016142523A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
cylinder
liquid
nozzle
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.)
Ceased
Application number
PCT/EP2016/055316
Other languages
French (fr)
Inventor
Philip CANNER
David Harris
Ben WICKS
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of WO2016142523A1 publication Critical patent/WO2016142523A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/006—Sprayers or atomisers specially adapted for therapeutic purposes operated by applying mechanical pressure to the liquid to be sprayed or atomised
    • A61M11/007—Syringe-type or piston-type sprayers or atomisers
    • 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
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/06—Sprayers or atomisers specially adapted for therapeutic purposes of the injector type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0483—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with gas and liquid jets intersecting in the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B05B7/2421—Gas containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2429—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together after discharge
    • B05B7/2432—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together after discharge and a secondary stream of atomising fluid being brought together in the container or putting the carried liquid under pressure in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2491—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
    • B05B7/267—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid and the gas being both under pressure
    • 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
    • A61M15/00—Inhalators
    • A61M15/0028—Inhalators using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
    • A61M15/003—Inhalators using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up using capsules, e.g. to be perforated or broken-up
    • A61M15/0033—Details of the piercing or cutting means
    • A61M15/0035—Piercing means
    • 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
    • A61M15/00—Inhalators
    • A61M15/009—Inhalators using medicine packages with incorporated spraying means, e.g. aerosol cans
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/025—Helium
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8218—Gas operated
    • A61M2205/8225—Gas operated using incorporated gas cartridges for the driving gas
    • 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
    • A61M2206/00—Characteristics of a physical parameter; associated device therefor
    • A61M2206/10—Flow characteristics
    • A61M2206/16—Rotating swirling helical flow, e.g. by tangential inflows

Definitions

  • the present invention relates to a device for atomising a liquid.
  • Atomised liquids are used for many purposes.
  • One such use is for therapy, for example, by application to the skin or by inhalation.
  • One example is the atomisation of sodium chloride for inhalation to assist with the removal of mucus and debris from the lungs.
  • Another example is atomisation of hyaluronic acid for skin beauty purposes.
  • a device for atomising liquids to form a mist is
  • EP 2626052 consists of a gas cylinder attached at its top end via a manifold to a separate
  • a face mask is attached at an outlet port on the top of the cartridge by which a user inhales the vapour.
  • a reservoir of liquid fluidly connected to an outlet nozzle, a moveable barrier, a space containing a cylinder of
  • the device is operable in use to allow the pressurised actuating gas to escape from the cylinder into the space such that: i) a first portion of the gas acts on the moveable barrier to force liquid in the reservoir to pass through the outlet nozzle and be emitted as an aerosol; and
  • the present invention thus provides a simple device for dispensing a liquid in aerosol form.
  • the size of the droplets in the aerosol is reduced, making the aerosol from the device easier to inhale.
  • the moveable barrier may be a piston, or a resiliently deformable membrane.
  • the device may further comprise a piercing element for piercing the cylinder when the device is operated.
  • the piercing element may be connected to the moveable barrier to reduce the number of moving components present during the operation of the device.
  • a portion of the housing is preferably deformable to allow the size of the space to be reduced such to move the cylinder into engagement with the piercing element when the device is operated.
  • the gas inside the cylinder is preferably at a pressure of up to 300 Bar. By containing gases at such high pressure, the cylinder can be made very small so as to minimise the overall size of the device.
  • the cylinder preferably has a water capacity less than or equal to 50ml, more preferably less than or equal to 20ml, and more preferably less than or equal to 10ml. In this way, the device contains only a small amount of gas so that the device can only be used once.
  • the nozzle is preferably arranged to generate an aerosol which comprises droplets of a diameter of less than ⁇ .
  • the nozzle comprises a fluid inlet for the liquid from the reservoir and an outlet which are
  • the liquid inside the reservoir may be a saline
  • the device is then useable to assist with the removal of mucus and debris from the lungs.
  • the liquid may instead contain hyaluronic acid so that the device can be used for skin beauty purposes.
  • the pressurised actuating gas is preferably a breathing gas such as compressed air or helium (a mixture of helium and oxygen) .
  • the device may be provided as a single-use disposable cartridge. It may also be provided as part of an assembly further comprising a base unit comprising an actuating means for operating the device.
  • Figure 1 which shows a cross section view of an atomiser device
  • Figure 2 shows a cross section view of nozzle for use with the atomiser device of Figure 1.
  • an atomiser device 10 which comprises a generally cylindrical housing 12 within which is located a reservoir 16 for liquid, and a cavity 13 for holding a container 14 of pressurised gas.
  • the container 14 is preferably a gas cylinder. Depending on the liquid contained in the reservoir 16, the gas inside the cylinder 14 is pressurised at a pressure of up to a 300 Bar .
  • a nozzle 18 is connected to the housing 12 and is fluidly connected to the liquid contained in the reservoir 16 such to define an outlet for the liquid from the device 10.
  • a closure means (not shown in the Figures), such as a valve or a peelable film, is located between the reservoir 16 and the nozzle 18 to control the flow of liquid through the nozzle 18.
  • each of the reservoir 16 and the cavity 13 is controlled by a moveable barrier 20 located in the housing 12.
  • the moveable barrier 20 is a piston which acts as a common wall for both the reservoir 16 and the cavity 13.
  • a first face 22 of the piston is in contact with the liquid from the reservoir 16 whilst a second face 24 of the piston is in fluid communication with the gas contained in the cavity 13.
  • the piston is slideable along the length of the cylindrical housing to vary the size of each of the reservoir 16 and the cavity 13.
  • the second face 24 of the actuating member 20 comprises an element 26 for piercing the cylinder 14 when the device is used.
  • the element 26 is actuated by an opening mechanism not shown in the Figures.
  • the opening mechanism may take the form of anything which can move the piercing element 26 relative to the cylinder 14.
  • the bottom of the housing 12 may be deformable to allow the cylinder 14 to be pushed into engagement with the piercing element 26.
  • the housing 12 may be provided as two parts which can be screwed together to push the cylinder 14 into engagement with the piercing element 26.
  • a channel 30 which is fluidly connected to the nozzle 18.
  • the interior of the nozzle 18 is best shown with
  • the nozzle 18 is generally
  • the opening mechanism is operated so that the piercing element 26 pierces the
  • the remaining portion of the escaped gas is bled into via the channel 30 to assist with the formation of the swirling motion inside the nozzle 18.
  • the liquid contained within the reservoir is any liquid which can be atomised.
  • Exemplary liquids which can be used include a solution of sodium chloride for when the device is used assisting with the removal of mucus and debris from the lungs, and hyaluronic acid for use in skin beauty purposes.
  • the device 10 preferably takes the form of a disposable cartridge which comes pre-filled with a liquid in the reservoir 16 and a cylinder 14 of pressurised gas in the cavity 13.
  • the cylinder 14 from the device 10 preferably has a water capacity less than or equal to 50ml, more preferably less than or equal to 20ml, and even more preferably a water capacity less than or equal to 10ml.
  • the cartridge may be supplied together with a base unit comprising an actuating means for operating the opening mechanism of the cartridge.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

A device (10) for atomising a liquid comprising a reservoir of liquid (16) connected to an outlet nozzle (18). The device also has a moveable barrier (20), a space (13) containing a cylinder of pressurised gas (14), and a channel (30) connecting the pressurised gas with the nozzle. The device is operates to allow the pressurised gas to escape from the cylinder into the space so that a first portion of the gas acts on the moveable barrier to force liquid in the reservoir to pass through the outlet nozzle and be emitted as an aerosol, and a second portion of the gas to be bled into the nozzle via the channel.

Description

A DEVICE FOR ATOMISING A LIQUID
BACKGROUND OF THE INVENTION The present invention relates to a device for atomising a liquid.
Atomised liquids are used for many purposes. One such use is for therapy, for example, by application to the skin or by inhalation. One example is the atomisation of sodium chloride for inhalation to assist with the removal of mucus and debris from the lungs. Another example is atomisation of hyaluronic acid for skin beauty purposes. A device for atomising liquids to form a mist is
disclosed in EP 2626052. It consists of a gas cylinder attached at its top end via a manifold to a separate
cartridge containing a liquid to which gas is supplied in order to generate a mist. A face mask is attached at an outlet port on the top of the cartridge by which a user inhales the vapour.
In order to gain wider acceptance, there is a need for a single-use disposable version of such atomisers.
SUMMARY OF THE INVENTION
According to the present invention there is provided a reservoir of liquid fluidly connected to an outlet nozzle, a moveable barrier, a space containing a cylinder of
pressurised actuating gas, and a channel fluidly connecting the pressurised actuating gas with the nozzle; wherein the device is operable in use to allow the pressurised actuating gas to escape from the cylinder into the space such that: i) a first portion of the gas acts on the moveable barrier to force liquid in the reservoir to pass through the outlet nozzle and be emitted as an aerosol; and
ii) a second portion of the gas is bled into the nozzle via the channel.
The present invention thus provides a simple device for dispensing a liquid in aerosol form.
Furthermore, by bleeding a portion of the gas into the nozzle, the size of the droplets in the aerosol is reduced, making the aerosol from the device easier to inhale.
The moveable barrier may be a piston, or a resiliently deformable membrane.
The device may further comprise a piercing element for piercing the cylinder when the device is operated. In this case, the piercing element may be connected to the moveable barrier to reduce the number of moving components present during the operation of the device. A portion of the housing is preferably deformable to allow the size of the space to be reduced such to move the cylinder into engagement with the piercing element when the device is operated.
The gas inside the cylinder is preferably at a pressure of up to 300 Bar. By containing gases at such high pressure, the cylinder can be made very small so as to minimise the overall size of the device. The cylinder preferably has a water capacity less than or equal to 50ml, more preferably less than or equal to 20ml, and more preferably less than or equal to 10ml. In this way, the device contains only a small amount of gas so that the device can only be used once.
The nozzle is preferably arranged to generate an aerosol which comprises droplets of a diameter of less than ΙΟμιη. Preferably, the nozzle comprises a fluid inlet for the liquid from the reservoir and an outlet which are
substantially parallel, and further comprises a tangential inlet fluidly connected to the channel. This arrangement helps the gas from the channel to mix with the liquid from the reservoir.
The liquid inside the reservoir may be a saline
solution, for example a solution of sodium chloride. The device is then useable to assist with the removal of mucus and debris from the lungs. The liquid may instead contain hyaluronic acid so that the device can be used for skin beauty purposes.
The pressurised actuating gas is preferably a breathing gas such as compressed air or helium (a mixture of helium and oxygen) .
The device may be provided as a single-use disposable cartridge. It may also be provided as part of an assembly further comprising a base unit comprising an actuating means for operating the device. BRIEF DESCRIPTION OF THE FIGURES
The invention will now be described with reference to the accompanying Figures in which:
Figure 1 which shows a cross section view of an atomiser device; and
Figure 2 shows a cross section view of nozzle for use with the atomiser device of Figure 1.
DETAILED DESCRIPTION
With reference to Figure 1, there is shown an atomiser device 10 which comprises a generally cylindrical housing 12 within which is located a reservoir 16 for liquid, and a cavity 13 for holding a container 14 of pressurised gas.
The container 14 is preferably a gas cylinder. Depending on the liquid contained in the reservoir 16, the gas inside the cylinder 14 is pressurised at a pressure of up to a 300 Bar .
A nozzle 18 is connected to the housing 12 and is fluidly connected to the liquid contained in the reservoir 16 such to define an outlet for the liquid from the device 10. A closure means (not shown in the Figures), such as a valve or a peelable film, is located between the reservoir 16 and the nozzle 18 to control the flow of liquid through the nozzle 18.
The size of each of the reservoir 16 and the cavity 13 is controlled by a moveable barrier 20 located in the housing 12. As shown in Figure 1, the moveable barrier 20 is a piston which acts as a common wall for both the reservoir 16 and the cavity 13. A first face 22 of the piston is in contact with the liquid from the reservoir 16 whilst a second face 24 of the piston is in fluid communication with the gas contained in the cavity 13. In use, the piston is slideable along the length of the cylindrical housing to vary the size of each of the reservoir 16 and the cavity 13.
The second face 24 of the actuating member 20 comprises an element 26 for piercing the cylinder 14 when the device is used. The element 26 is actuated by an opening mechanism not shown in the Figures. The opening mechanism may take the form of anything which can move the piercing element 26 relative to the cylinder 14. For instance, the bottom of the housing 12 may be deformable to allow the cylinder 14 to be pushed into engagement with the piercing element 26.
Alternatively, the housing 12 may be provided as two parts which can be screwed together to push the cylinder 14 into engagement with the piercing element 26.
Extending off from the cavity 13 is a channel 30 which is fluidly connected to the nozzle 18.
The interior of the nozzle 18 is best shown with
reference to Figure 2. The nozzle 18 is generally
cylindrically shaped and defines a liquid inlet 32 into which liquid from the reservoir 16 enters (signified by the arrow shown in Figure 2) when the closure means is open. As the liquid flows through the nozzle, the nozzle induces a swirling motion on the liquid to generate an aerosol spray 28 from the outlet 34 with droplets having a diameter of less than ΙΟμιη. Formation of the swirling motion is assisted by a tangential inlet 36 inside the nozzle 18 which is fluidly connected to the channel 30. The tangential inlet 36 is substantially perpendicular to both the fluid inlet 32 and the outlet 34.
In use of the device 10, the opening mechanism is operated so that the piercing element 26 pierces the
cylinder 14 to allow gas to escape therefrom. The escaped pressurised gas enters the cavity 13 and a portion of this gas generates a force on the second face 24 of the piston 20, which forces the piston 20 to slide inside the housing 12 towards the nozzle 18. Due to the reduction in size of the reservoir, some of the liquid contained in the reservoir 16 forces open, and passes through, the closure means into the nozzle 18 and out of the device 10 as an aerosol spray 28.
The remaining portion of the escaped gas is bled into via the channel 30 to assist with the formation of the swirling motion inside the nozzle 18.
The liquid contained within the reservoir is any liquid which can be atomised. Exemplary liquids which can be used include a solution of sodium chloride for when the device is used assisting with the removal of mucus and debris from the lungs, and hyaluronic acid for use in skin beauty purposes.
The device 10 preferably takes the form of a disposable cartridge which comes pre-filled with a liquid in the reservoir 16 and a cylinder 14 of pressurised gas in the cavity 13. The cylinder 14 from the device 10 preferably has a water capacity less than or equal to 50ml, more preferably less than or equal to 20ml, and even more preferably a water capacity less than or equal to 10ml.
The cartridge may be supplied together with a base unit comprising an actuating means for operating the opening mechanism of the cartridge.

Claims

1. A device for atomising a liquid, the device comprising a reservoir of liquid fluidly connected to an outlet nozzle, a moveable barrier, a space containing a cylinder of
pressurised actuating gas, and a channel fluidly connecting the pressurised actuating gas with the nozzle; wherein the device is operable in use to allow the pressurised actuating gas to escape from the cylinder into the space such that: i) a first portion of the gas acts on the moveable barrier to force liquid in the reservoir to pass through the outlet nozzle and be emitted as an aerosol; and
ii) a second portion of the gas is bled into the nozzle via the channel.
2. A device according to any preceding claim wherein the moveable barrier is a piston.
3. A device according to claim 1 wherein the moveable barrier is a resiliently deformable membrane.
4. A device according to any preceding claim wherein the device further comprises a piercing element for piercing the cylinder when the device is operated.
5. A device according to claim 2 wherein the piercing element is connected to the moveable barrier.
6. A device according to any preceding claim wherein the gas inside the cylinder is at a pressure of up to 300 Bar.
7. A device according to any preceding claim wherein the cylinder has a water capacity less than or equal to 50ml.
8. A device according to any preceding claim wherein the cylinder has a water capacity less than or equal to 20ml.
9. A device according to any preceding claim wherein the cylinder has a water capacity less than or equal to 10ml.
10. A device according to any preceding claim wherein the nozzle is arranged to generate an aerosol which comprises droplets of a diameter of less than ΙΟμιη.
11. A device according to any preceding claim wherein the nozzle comprises a fluid inlet for the liquid from the reservoir and an outlet which are substantially parallel, and further comprises a tangential inlet fluidly connected to the channel.
12. A device according to any preceding claim wherein the liquid inside the reservoir is a saline solution.
13. A device according to any preceding claim wherein the pressurised actuating gas is a breathing gas.
14. A device according to any preceding claim wherein the device is a single-use disposable cartridge.
15. An assembly comprising the device of any preceding claim and a base unit comprising an actuating means for operating the device.
PCT/EP2016/055316 2015-03-11 2016-03-11 A device for atomising a liquid Ceased WO2016142523A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1504092.6 2015-03-11
GB1504092.6A GB2536421A (en) 2015-03-11 2015-03-11 A device for atomising a liquid

Publications (1)

Publication Number Publication Date
WO2016142523A1 true WO2016142523A1 (en) 2016-09-15

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PCT/EP2016/055316 Ceased WO2016142523A1 (en) 2015-03-11 2016-03-11 A device for atomising a liquid

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WO (1) WO2016142523A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115462568A (en) * 2022-09-27 2022-12-13 深圳麦克韦尔科技有限公司 Nozzle and electronic atomization device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2251898A (en) * 1990-11-29 1992-07-22 D M W Metered dose spray system
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