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US20020026938A1 - Inhalation device - Google Patents

Inhalation device Download PDF

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Publication number
US20020026938A1
US20020026938A1 US09/986,941 US98694101A US2002026938A1 US 20020026938 A1 US20020026938 A1 US 20020026938A1 US 98694101 A US98694101 A US 98694101A US 2002026938 A1 US2002026938 A1 US 2002026938A1
Authority
US
United States
Prior art keywords
main body
outlet assembly
actuator according
mouthpiece
canister
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.)
Abandoned
Application number
US09/986,941
Inventor
Darren Hodson
Jorgen Rasmussen
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.)
AstraZeneca AB
Original Assignee
Astra AB
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 Astra AB filed Critical Astra AB
Priority to US09/986,941 priority Critical patent/US20020026938A1/en
Publication of US20020026938A1 publication Critical patent/US20020026938A1/en
Priority to US10/698,950 priority patent/US7367333B2/en
Priority to US11/346,557 priority patent/US7743765B2/en
Priority to US11/346,559 priority patent/US20060213505A1/en
Priority to US11/346,558 priority patent/US7967011B2/en
Priority to US11/346,573 priority patent/US8584668B2/en
Priority to US13/678,893 priority patent/US20130133643A1/en
Abandoned 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
    • A61M15/00—Inhalators
    • A61M15/0065—Inhalators with dosage or measuring devices
    • 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
    • A61M15/0001—Details of inhalators; Constructional features thereof
    • A61M15/0021—Mouthpieces therefor
    • 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
    • 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
    • A61M11/04—Sprayers or atomisers specially adapted for therapeutic purposes operated by the vapour pressure of the liquid to be sprayed or atomised
    • 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
    • A61M15/0001—Details of inhalators; Constructional features thereof
    • A61M15/0021—Mouthpieces therefor
    • A61M15/0025—Mouthpieces therefor with caps
    • 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
    • A61M15/0065—Inhalators with dosage or measuring devices
    • A61M15/0068—Indicating or counting the number of dispensed doses or of remaining doses
    • 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
    • A61M15/00—Inhalators
    • A61M15/0091—Inhalators mechanically breath-triggered
    • 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
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables
    • 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
    • A61M2205/59—Aesthetic features, e.g. distraction means to prevent fears of child patients

Definitions

  • the present invention relates to an actuator for an inhaler for administering medicament by inhalation and to an inhaler including the same.
  • actuators have been known for delivering metered doses of medicament from aerosol canisters. These actuators comprise a single integral moulding and are usually coloured to identify the medicament being delivered. After use with only one canister the actuator is discarded. This is desirable, since some medicaments which are delivered, will, over time, become deposited in the nozzle block and the mouthpiece of the actuator.
  • Such two-part construction prevents re-use of the actuator, thereby ensuring that the actuator has to be thrown away after use with a single canister, and further allows for the manufacture of a range of actuators by providing the first part as a common part to the range and forming the second part from a material having different constitution and optionally any shape.
  • the second part can be coloured or have a particular surface finish or decoration according to the medicament to be delivered.
  • the second part can be formed to have a particular shape, such as that of an animal which may appeal to young children.
  • Such two-part construction is also advantageous for preparing regulatory documentation which will include common data relating to the first part.
  • U.S. Pat. No. 5,520,166 discloses a cassette for use in an aerosol delivery device.
  • the cassette comprises, as separate parts, a mouthpiece and a housing to one end of which the mouthpiece is attached, but, in being intended to be located within another device, there is no requirement and no suggestion is made of forming the parts of the cassette of materials having different constitution.
  • the present invention provides an actuator for an inhaler for delivering medicament by inhalation, comprising: a main body comprising a tubular member for receiving a canister containing medicament and having a valve stem extending therefrom; and an outlet assembly, as a part formed separately of the main body, comprising a mouthpiece for guiding medicament to the mouth of a user and a nozzle block for receiving the valve stem of the canister and delivering medicament from the canister into the mouthpiece; wherein at least a part of at least one of the main body and the outlet assembly is configured so as to deform or break on separating the outlet assembly from the main body so as to prevent re-use of the actuator; characterized in that the main body and the outlet assembly are composed of materials having different constitution.
  • the tubular member includes a lateral opening at one end thereof for receiving the outlet assembly at an angle transverse to the length thereof.
  • the tubular member includes an opening at one end thereof through which a canister is in use fitted.
  • the main body further comprises a foot at one end of the tubular member thereof which is configured such that, with a canister fitted therein, the actuator will stand unsupported with the tubular member extending generally vertically.
  • the bottom surface of the foot includes a recess for receiving a thumb or a finger of a user.
  • the recess is concave.
  • the bottom surface of the foot is flat.
  • the actuator further comprises a breath actuation mechanism.
  • the actuator further comprises a compliance monitor, in particular a dose counter.
  • the main body comprises one or both of the breath actuation mechanism and the compliance monitor.
  • the foot comprises one or both of the breath actuation mechanism and the compliance monitor.
  • the outlet assembly is formed as a single integral moulding.
  • the nozzle block includes a bore having an opening for receiving the valve stem of a canister and a spray orifice configured to direct a spray into the mouthpiece.
  • the outlet assembly is configured to deform or be broken in being separated from the main body.
  • connection between the mouthpiece and the nozzle block is configured at least in part to break on separating the outlet assembly form the main body.
  • connection between the mouthpiece and the nozzle block comprises at least one member connecting a lower part of the mouthpiece with a lower part of the nozzle block and at least one member connecting an upper part of the mouthpiece with an upper part of the nozzle block, with the at least one member connecting a lower part of the mouthpiece with a lower part of the nozzle block being configured to break on separating the outlet assembly from the main body.
  • the main body and the outlet assembly are configured so as to snap-fit together.
  • the main body and the outlet assembly are composed of entirely different materials.
  • main body and the outlet assembly are composed of the same basic material but include different additives such as colour pigment.
  • main body and the outlet assembly are of different colour.
  • the present invention also extends to an inhaler comprising the above-described actuator and a canister containing medicament.
  • the inhaler is a pressurised metered dose inhaler.
  • FIG. 1 illustrates a perspective view of an inhaler in accordance with a preferred embodiment of the present invention
  • FIG. 2 illustrates a side view of the inhaler of FIG. 1
  • FIG. 3 illustrates a front view of the inhaler of FIG. 1
  • FIG. 4 illustrates a rear view of the inhaler of FIG. 1
  • FIG. 5 illustrates a plan view of the inhaler of FIG. 1
  • FIG. 6 illustrates an underneath plan view of the inhaler of FIG. 1;
  • FIG. 7 illustrates a horizontal sectional view (along section A-A) of the inhaler of FIG. 1;
  • FIG. 8 illustrates in enlarged scale a fragmentary view of the section illustrated in FIG. 7;
  • FIG. 9 illustrates a vertical sectional view (along section B-B) of the inhaler of FIG. 1;
  • FIG. 10 illustrates in enlarged scale a fragmentary view of the section illustrated in FIG. 9;
  • FIG. 11 illustrates a perspective view of the outlet assembly of the actuator of the inhaler of FIG. 1;
  • FIG. 12 illustrates a plan view of the outlet assembly of FIG. 11
  • FIG. 13 illustrates an underneath plan view of the outlet assembly of FIG. 11;
  • FIG. 14 illustrates a side view of the outlet assembly of FIG. 11
  • FIG. 15 illustrates a rear view of the outlet assembly of FIG. 11.
  • FIG. 16 illustrates a front view of the outlet assembly of FIG. 11.
  • the inhaler comprises an actuator, which comprises a main body 2 , an outlet assembly 4 fitted to a lower part of the main body 2 and a cap 6 , and an aerosol canister 7 containing medicament fitted therein.
  • the main body 2 comprises a tubular member 8 having an opening 10 at one, the upper, end thereof into which a canister 7 having a valve stem 11 extending therefrom is in use fitted, and a foot 12 having a bottom surface which includes a recess 12 a , in this embodiment concave in shape, for receiving typically a thumb of a user.
  • the foot 12 can be formed with a substantially flat bottom surface.
  • the foot 12 serves to allow the actuator to stand unsupported on a flat surface such that, when the actuator is not in use, it can be stored in an upright position. This is particularly advantageous when an a canister 7 is fitted therein, since such canisters 7 should, ideally, be stored with the valve stem 11 directed downwards.
  • the other, lower, end of the tubular member 8 is closed and includes a lateral opening 14 , in this embodiment ovoid in shape, into which the outlet assembly 4 is fitted.
  • the main body 2 further comprises a pair of opposing projections 16 which extend inwardly from the inner surface of the tubular member 8 adjacent the lateral opening 14 .
  • the projections 16 are disposed to the sides of the lateral opening 14 and are spaced rearwardly therefrom.
  • the outlet assembly 4 comprises a tubular section 18 , a major part of which defines the mouthpiece which is in use gripped by the lips of a user, and a nozzle block 20 connected thereto.
  • the tubular section 18 includes a radial outwardly-directed peripheral flange 22 .
  • the flange 22 abuts the lateral opening 14 such that the major part of the tubular section 18 extends outwardly of the main body 2 .
  • the outlet assembly 4 further comprises first and second arms 24 , 26 which extend rearwardly form respective sides of the tubular section 18 .
  • Each of the first and second arms 24 , 26 includes a catch member 28 , 30 which is adapted to engage with a respective one of the projections 16 on the inner surface of the tubular member 8 when the outlet assembly 4 is inserted fully into the main body 2 .
  • the catch members 28 , 30 on the first and second arms 24 , 26 each include a first surface 28 a , 30 a which has a rearwardly-directed component and acts as a guiding surface, and a second surface 28 b , 30 b which is substantially orthogonally directed to the longitudinal axis of the outlet assembly 4 and acts as a locking surface.
  • the outlet assembly 4 further comprises a third arm 34 which extends rearwardly from the top of the tubular section 18 .
  • the third arm 34 includes a catch member 35 in the form of an outwardly-directed projection, which, when the outlet assembly 4 is inserted fully into the main body 2 , engages behind a part of the tubular member 8 defining the lateral opening 14 .
  • the catch member 35 on the third arm 34 as with the catch members 28 , 30 on the first and second arms 24 , 26 , includes a first surface 35 a which has a rearwardly-directed component and acts as a guiding surface, and a second surface 35 b which is substantially orthogonally directed to the longitudinal axis of the outlet assembly 4 and acts as a locking surface.
  • the nozzle block 20 is connected to the tubular section 18 by first and second pairs of connecting elements 36 , 38 .
  • the first pair of connecting elements 36 extend between a lower part of the nozzle block 20 and a lower part of the tubular section 18 .
  • the lower connecting elements 36 are configured to break or be permanently deformed on withdrawal of the outlet assembly 4 from the main body 2 .
  • the second pair of connecting elements 38 extend between an upper part of the nozzle block 20 and an upper part of the tubular section 18 .
  • the nozzle block 20 includes a tubular bore 40 which extends along the longitudinal axis of the tubular member 8 when the outlet assembly 4 is inserted fully into the main body 2 .
  • the tubular bore 40 is open at one, the upper, end and includes a laterally-directed spray orifice 42 at the other, lower, end.
  • the spray orifice 42 is configured to direct a spray into the tubular section 18 .
  • the tubular bore 40 is adapted to receive the valve stem 11 of a canister 7 .
  • the outlet assembly 4 further comprises a fourth arm 44 which extends forwardly and downwardly from the nozzle block 20 .
  • the distal end of the fourth arm 44 includes a catch member 46 which, when the outlet assembly 4 is inserted fully into the main body 2 . engages behind a part of the tubular member 8 defining the lateral opening 14 .
  • the catch member 46 on the fourth arm 44 includes a surface 46 a which is substantially orthogonally directed to the longitudinal axis of the outlet assembly 4 and acts as a locking surface.
  • an outlet assembly 4 and a main body 2 are selected according to the requirements, based on colour, shape, etc., for the actuator.
  • the outlet assembly 4 is then inserted into the lateral opening 14 in the main body 2 until the catch members 28 , 30 on the first and second arms 24 , 26 of the outlet assembly 4 engage with the respective projections 16 on the inner side surface of the tubular member 8 of the main body 2 , and the catch members 34 , 46 on the third and fourth arms 34 , 44 of the outlet assembly 4 engage behind respective parts of the tubular member 8 defining the lateral opening 14 .
  • a canister 7 is then passed into the tubular member 8 of the main body 2 through the upper opening 10 such that the valve stem 11 of the canister 7 is located in the tubular bore 40 in the nozzle block 20 .
  • the inhaler is then ready for use.
  • the outlet assembly 4 is held in the main body 2 and the outlet assembly 4 cannot be non-destructably detached from the main body 2 .
  • the outlet assembly 4 is configured to break or be permanently deformed if withdrawn from the main body 2 and thereby render the outlet assembly 4 and hence the actuator unusable. In this embodiment this is achieved by configuring the lower connecting elements 36 connecting the tubular section 18 and the nozzle block 20 of the outlet assembly 4 to break or be permanently deformed on withdrawal of the outlet assembly 4 from the main body 2 .

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Anesthesiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Pulmonology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biophysics (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

An actuator for an inhaler for delivering medicament by inhalation, comprising: a main body (2) comprising a tubular member (8) for receiving a canister (7) containing medicament and having a valve stem (11) extending therefrom; and an outlet assembly (4), as a part formed separately of the main body (2), comprising a mouthpiece for guiding medicament to the mouth of a user and a nozzle block (20) for receiving the valve stem (11) of the canister (7) and delivering medicament from the canister (7) into the mouthpiece; wherein at least a part of at least one of the main body (2) and the outlet assembly (4) is configured so as to deform or break on separating the outlet assembly (4) from the main body (2) so as to prevent re-use of the actuator; characterized in that the main body (2) and the outlet assembly (4) are composed of materials having different constitution.

Description

  • The present invention relates to an actuator for an inhaler for administering medicament by inhalation and to an inhaler including the same. [0001]
  • For some time, actuators have been known for delivering metered doses of medicament from aerosol canisters. These actuators comprise a single integral moulding and are usually coloured to identify the medicament being delivered. After use with only one canister the actuator is discarded. This is desirable, since some medicaments which are delivered, will, over time, become deposited in the nozzle block and the mouthpiece of the actuator. [0002]
  • It is an aim of the present invention to provide an actuator of two-part construction, with the parts being composed of materials having different constitution and configured so as not to be separable without being deformed or broken. Such two-part construction prevents re-use of the actuator, thereby ensuring that the actuator has to be thrown away after use with a single canister, and further allows for the manufacture of a range of actuators by providing the first part as a common part to the range and forming the second part from a material having different constitution and optionally any shape. Typically, the second part can be coloured or have a particular surface finish or decoration according to the medicament to be delivered. In addition, the second part can be formed to have a particular shape, such as that of an animal which may appeal to young children. Such two-part construction is also advantageous for preparing regulatory documentation which will include common data relating to the first part. [0003]
  • U.S. Pat. No. 5,520,166 discloses a cassette for use in an aerosol delivery device. The cassette comprises, as separate parts, a mouthpiece and a housing to one end of which the mouthpiece is attached, but, in being intended to be located within another device, there is no requirement and no suggestion is made of forming the parts of the cassette of materials having different constitution. [0004]
  • Accordingly, the present invention provides an actuator for an inhaler for delivering medicament by inhalation, comprising: a main body comprising a tubular member for receiving a canister containing medicament and having a valve stem extending therefrom; and an outlet assembly, as a part formed separately of the main body, comprising a mouthpiece for guiding medicament to the mouth of a user and a nozzle block for receiving the valve stem of the canister and delivering medicament from the canister into the mouthpiece; wherein at least a part of at least one of the main body and the outlet assembly is configured so as to deform or break on separating the outlet assembly from the main body so as to prevent re-use of the actuator; characterized in that the main body and the outlet assembly are composed of materials having different constitution. [0005]
  • Preferably, the tubular member includes a lateral opening at one end thereof for receiving the outlet assembly at an angle transverse to the length thereof. [0006]
  • Preferably, the tubular member includes an opening at one end thereof through which a canister is in use fitted. [0007]
  • Preferably, the main body further comprises a foot at one end of the tubular member thereof which is configured such that, with a canister fitted therein, the actuator will stand unsupported with the tubular member extending generally vertically. [0008]
  • In one embodiment the bottom surface of the foot includes a recess for receiving a thumb or a finger of a user. Preferably, the recess is concave. [0009]
  • In another embodiment the bottom surface of the foot is flat. [0010]
  • Preferably, the actuator further comprises a breath actuation mechanism. [0011]
  • Preferably, the actuator further comprises a compliance monitor, in particular a dose counter. [0012]
  • In a preferred embodiment the main body comprises one or both of the breath actuation mechanism and the compliance monitor. [0013]
  • In a particularly preferred embodiment the foot comprises one or both of the breath actuation mechanism and the compliance monitor. [0014]
  • Preferably, the outlet assembly is formed as a single integral moulding. [0015]
  • Preferably, the nozzle block includes a bore having an opening for receiving the valve stem of a canister and a spray orifice configured to direct a spray into the mouthpiece. [0016]
  • Preferably, the outlet assembly is configured to deform or be broken in being separated from the main body. [0017]
  • In a preferred embodiment a connection between the mouthpiece and the nozzle block is configured at least in part to break on separating the outlet assembly form the main body. [0018]
  • In a particularly preferred embodiment the connection between the mouthpiece and the nozzle block comprises at least one member connecting a lower part of the mouthpiece with a lower part of the nozzle block and at least one member connecting an upper part of the mouthpiece with an upper part of the nozzle block, with the at least one member connecting a lower part of the mouthpiece with a lower part of the nozzle block being configured to break on separating the outlet assembly from the main body. [0019]
  • Preferably, the main body and the outlet assembly are configured so as to snap-fit together. [0020]
  • In one embodiment the main body and the outlet assembly are composed of entirely different materials. [0021]
  • In another embodiment the main body and the outlet assembly are composed of the same basic material but include different additives such as colour pigment. [0022]
  • In a particularly preferred embodiment the main body and the outlet assembly are of different colour. [0023]
  • The present invention also extends to an inhaler comprising the above-described actuator and a canister containing medicament. [0024]
  • Preferably, the inhaler is a pressurised metered dose inhaler.[0025]
  • A preferred embodiment of the present invention will now be described hereinbelow by way of example only with reference to the accompanying drawings, in which: [0026]
  • FIG. 1 illustrates a perspective view of an inhaler in accordance with a preferred embodiment of the present invention; [0027]
  • FIG. 2 illustrates a side view of the inhaler of FIG. 1; [0028]
  • FIG. 3 illustrates a front view of the inhaler of FIG. 1; [0029]
  • FIG. 4 illustrates a rear view of the inhaler of FIG. 1; [0030]
  • FIG. 5 illustrates a plan view of the inhaler of FIG. 1; [0031]
  • FIG. 6 illustrates an underneath plan view of the inhaler of FIG. 1; [0032]
  • FIG. 7 illustrates a horizontal sectional view (along section A-A) of the inhaler of FIG. 1; [0033]
  • FIG. 8 illustrates in enlarged scale a fragmentary view of the section illustrated in FIG. 7; [0034]
  • FIG. 9 illustrates a vertical sectional view (along section B-B) of the inhaler of FIG. 1; [0035]
  • FIG. 10 illustrates in enlarged scale a fragmentary view of the section illustrated in FIG. 9; [0036]
  • FIG. 11 illustrates a perspective view of the outlet assembly of the actuator of the inhaler of FIG. 1; [0037]
  • FIG. 12 illustrates a plan view of the outlet assembly of FIG. 11; [0038]
  • FIG. 13 illustrates an underneath plan view of the outlet assembly of FIG. 11; [0039]
  • FIG. 14 illustrates a side view of the outlet assembly of FIG. 11; [0040]
  • FIG. 15 illustrates a rear view of the outlet assembly of FIG. 11; and [0041]
  • FIG. 16 illustrates a front view of the outlet assembly of FIG. 11.[0042]
  • The inhaler comprises an actuator, which comprises a [0043] main body 2, an outlet assembly 4 fitted to a lower part of the main body 2 and a cap 6, and an aerosol canister 7 containing medicament fitted therein.
  • The [0044] main body 2 comprises a tubular member 8 having an opening 10 at one, the upper, end thereof into which a canister 7 having a valve stem 11 extending therefrom is in use fitted, and a foot 12 having a bottom surface which includes a recess 12 a, in this embodiment concave in shape, for receiving typically a thumb of a user. In an alternative embodiment the foot 12 can be formed with a substantially flat bottom surface. The foot 12 serves to allow the actuator to stand unsupported on a flat surface such that, when the actuator is not in use, it can be stored in an upright position. This is particularly advantageous when an a canister 7 is fitted therein, since such canisters 7 should, ideally, be stored with the valve stem 11 directed downwards. The other, lower, end of the tubular member 8 is closed and includes a lateral opening 14, in this embodiment ovoid in shape, into which the outlet assembly 4 is fitted.
  • The [0045] main body 2 further comprises a pair of opposing projections 16 which extend inwardly from the inner surface of the tubular member 8 adjacent the lateral opening 14. The projections 16 are disposed to the sides of the lateral opening 14 and are spaced rearwardly therefrom.
  • The [0046] outlet assembly 4 comprises a tubular section 18, a major part of which defines the mouthpiece which is in use gripped by the lips of a user, and a nozzle block 20 connected thereto.
  • The [0047] tubular section 18 includes a radial outwardly-directed peripheral flange 22. When the outlet assembly 4 is inserted fully into the main body 2, the flange 22 abuts the lateral opening 14 such that the major part of the tubular section 18 extends outwardly of the main body 2.
  • The [0048] outlet assembly 4 further comprises first and second arms 24, 26 which extend rearwardly form respective sides of the tubular section 18. Each of the first and second arms 24, 26 includes a catch member 28, 30 which is adapted to engage with a respective one of the projections 16 on the inner surface of the tubular member 8 when the outlet assembly 4 is inserted fully into the main body 2. The catch members 28, 30 on the first and second arms 24, 26 each include a first surface 28 a, 30 a which has a rearwardly-directed component and acts as a guiding surface, and a second surface 28 b, 30 b which is substantially orthogonally directed to the longitudinal axis of the outlet assembly 4 and acts as a locking surface.
  • The [0049] outlet assembly 4 further comprises a third arm 34 which extends rearwardly from the top of the tubular section 18. The third arm 34 includes a catch member 35 in the form of an outwardly-directed projection, which, when the outlet assembly 4 is inserted fully into the main body 2, engages behind a part of the tubular member 8 defining the lateral opening 14. The catch member 35 on the third arm 34, as with the catch members 28, 30 on the first and second arms 24, 26, includes a first surface 35 a which has a rearwardly-directed component and acts as a guiding surface, and a second surface 35 b which is substantially orthogonally directed to the longitudinal axis of the outlet assembly 4 and acts as a locking surface.
  • The [0050] nozzle block 20 is connected to the tubular section 18 by first and second pairs of connecting elements 36, 38. The first pair of connecting elements 36 extend between a lower part of the nozzle block 20 and a lower part of the tubular section 18. As will be described hereinbelow, in this embodiment the lower connecting elements 36 are configured to break or be permanently deformed on withdrawal of the outlet assembly 4 from the main body 2. The second pair of connecting elements 38 extend between an upper part of the nozzle block 20 and an upper part of the tubular section 18. The nozzle block 20 includes a tubular bore 40 which extends along the longitudinal axis of the tubular member 8 when the outlet assembly 4 is inserted fully into the main body 2. The tubular bore 40 is open at one, the upper, end and includes a laterally-directed spray orifice 42 at the other, lower, end. The spray orifice 42 is configured to direct a spray into the tubular section 18. In this embodiment the tubular bore 40 is adapted to receive the valve stem 11 of a canister 7.
  • The [0051] outlet assembly 4 further comprises a fourth arm 44 which extends forwardly and downwardly from the nozzle block 20. The distal end of the fourth arm 44 includes a catch member 46 which, when the outlet assembly 4 is inserted fully into the main body 2. engages behind a part of the tubular member 8 defining the lateral opening 14. The catch member 46 on the fourth arm 44 includes a surface 46 a which is substantially orthogonally directed to the longitudinal axis of the outlet assembly 4 and acts as a locking surface.
  • In manufacture, an [0052] outlet assembly 4 and a main body 2 are selected according to the requirements, based on colour, shape, etc., for the actuator. The outlet assembly 4 is then inserted into the lateral opening 14 in the main body 2 until the catch members 28, 30 on the first and second arms 24, 26 of the outlet assembly 4 engage with the respective projections 16 on the inner side surface of the tubular member 8 of the main body 2, and the catch members 34, 46 on the third and fourth arms 34, 44 of the outlet assembly 4 engage behind respective parts of the tubular member 8 defining the lateral opening 14. A canister 7 is then passed into the tubular member 8 of the main body 2 through the upper opening 10 such that the valve stem 11 of the canister 7 is located in the tubular bore 40 in the nozzle block 20. The inhaler is then ready for use.
  • By the provision of catch members the [0053] outlet assembly 4 is held in the main body 2 and the outlet assembly 4 cannot be non-destructably detached from the main body 2. As mentioned hereinabove, the outlet assembly 4 is configured to break or be permanently deformed if withdrawn from the main body 2 and thereby render the outlet assembly 4 and hence the actuator unusable. In this embodiment this is achieved by configuring the lower connecting elements 36 connecting the tubular section 18 and the nozzle block 20 of the outlet assembly 4 to break or be permanently deformed on withdrawal of the outlet assembly 4 from the main body 2.
  • Finally, it will be understood by a person skilled in the art that the present invention is not limited to the described embodiment but can be modified in many different ways within the scope of the appended claims. [0054]

Claims (20)

1. An actuator for an inhaler for delivering medicament by inhalation, comprising:
a main body (2) comprising a tubular member (8) for receiving a canister (7) containing medicament and having a valve stem (11) extending therefrom; and an outlet assembly (4), as a part formed separately of the main body (2), comprising a mouthpiece for guiding medicament to the mouth of a user and a nozzle block (20) for receiving the valve stem (11) of the canister (7) and delivering medicament from the canister (7) into the mouthpiece;
wherein at least a part of at least one of the main body (2) and the outlet assembly (4) is configured so as to deform or break on separating the outlet assembly (4) from the main body (2) so as to prevent re-use of the actuator;
characterized in that the main body (2) and the outlet assembly (4) are composed of materials having different constitution:
2. The actuator according to claim 1, wherein the tubular member (8) includes a lateral opening (14) at one end thereof for receiving the outlet assembly (4) at an angle transverse to the length thereof.
3. The actuator according to claim 1 or 2, wherein the tubular member (8) includes an opening (10) at one end thereof through which a canister (7) is in use fitted.
4. The actuator according to any of claims 1 to 3, wherein the main body (2) further comprises a foot (12) at one end of the tubular member (8) thereof which is configured such that, with a canister (7) fitted therein, the actuator will stand unsupported with the tubular member (8) extending generally vertically.
5. The actuator according to claim 4, wherein the bottom surface of the foot (12) includes a recess (12 a) for receiving a thumb or a finger of a user.
6. The actuator according to claim 5, wherein the recess (12 a) is concave.
7. The actuator according to claim 4, wherein the bottom surface of the foot (12) is flat.
8. The actuator according to any of claims 1 to 7, further comprising a breath actuation mechanism.
9. The actuator according to any of claims 1 to 8, further comprising a compliance monitor, in particular a dose counter.
10. The actuator according to claim 8 or 9, wherein the main body (2) comprises one or both of the breath actuation mechanism and the compliance monitor.
11. The actuator according to claim 10 when appendant upon any of claims 4 to 7, wherein the foot (12) comprises one or both of the breath actuation mechanism and the compliance monitor.
12. The actuator according to any of claims 1 to 11, wherein the outlet assembly (4) is formed as a single integral moulding.
13. The actuator according to any of claims 1 to 12, wherein the nozzle block (20) includes a bore (40) having an opening for receiving the valve stem (11) of a canister (7) and a spray orifice (42) configured to direct a spray into the mouthpiece.
14. The actuator according to any of claims 1 to 13, wherein the outlet assembly (4) is configured to deform or be broken in being separated from the main body (2).
15. The actuator according to claim 14, wherein a connection between the mouthpiece and the nozzle block (20) is configured at least in part to break on separating the outlet assembly (4) from the main body (2).
16. The actuator according to claim 15, wherein the connection between the mouthpiece and the nozzle block (20) comprises at least one member (36) connecting a lower part of the mouthpiece with a lower part of the nozzle block (20) and at least one member (38) connecting an upper part of the mouthpiece with an upper part of the nozzle block (20), with the at least one member (36) connecting a lower part of the mouthpiece with a lower part of the nozzle block (20) being configured to break on separating the outlet assembly (4) from the main body (2).
17. The actuator according to any of claims 1 to 16, wherein the main body (2) and the outlet assembly (4) are configured so as to snap-fit together.
18. The actuator according to any of claims 1 to 17, wherein the main body (2) and the outlet assembly (4) are of different colour.
19. An inhaler comprising the actuator according to any of claims 1 to 18 and a canister (7) containing medicament.
20. The inhaler according to claim 19, wherein the inhaler is a pressurised metered dose inhaler.
US09/986,941 1997-11-14 2001-11-13 Inhalation device Abandoned US20020026938A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US09/986,941 US20020026938A1 (en) 1997-11-14 2001-11-13 Inhalation device
US10/698,950 US7367333B2 (en) 1997-11-14 2003-11-03 Inhalation device
US11/346,557 US7743765B2 (en) 1997-11-14 2006-02-03 Inhalation device
US11/346,559 US20060213505A1 (en) 1997-11-14 2006-02-03 Inhalation device
US11/346,558 US7967011B2 (en) 1997-11-14 2006-02-03 Inhalation device
US11/346,573 US8584668B2 (en) 1997-11-14 2006-02-03 Inhalation device
US13/678,893 US20130133643A1 (en) 1997-11-14 2012-11-16 Inhalation Device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
SE9704185A SE9704185D0 (en) 1997-11-14 1997-11-14 Inhalation device
SE9704185-9 1997-11-14
PCT/SE1998/002038 WO1999025406A1 (en) 1997-11-14 1998-11-11 Inhalation device
SEPCT/SE98/02038 1998-11-11
US21475799A 1999-01-12 1999-01-12
US09/986,941 US20020026938A1 (en) 1997-11-14 2001-11-13 Inhalation device

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
US09214757 Continuation 1998-11-11
PCT/SE1998/002038 Continuation WO1999025406A1 (en) 1997-11-14 1998-11-11 Inhalation device
US21475799A Continuation 1997-11-14 1999-01-12

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/698,950 Continuation US7367333B2 (en) 1997-11-14 2003-11-03 Inhalation device

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US20020026938A1 true US20020026938A1 (en) 2002-03-07

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ID=20408991

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US09/822,252 Abandoned US20010032644A1 (en) 1997-11-14 2001-04-02 Inhalation device
US09/986,941 Abandoned US20020026938A1 (en) 1997-11-14 2001-11-13 Inhalation device
US10/336,757 Expired - Fee Related US6805116B2 (en) 1997-11-14 2003-01-06 Inhalation device
US10/698,950 Expired - Fee Related US7367333B2 (en) 1997-11-14 2003-11-03 Inhalation device
US11/346,573 Expired - Fee Related US8584668B2 (en) 1997-11-14 2006-02-03 Inhalation device
US13/678,893 Abandoned US20130133643A1 (en) 1997-11-14 2012-11-16 Inhalation Device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US09/822,252 Abandoned US20010032644A1 (en) 1997-11-14 2001-04-02 Inhalation device

Family Applications After (4)

Application Number Title Priority Date Filing Date
US10/336,757 Expired - Fee Related US6805116B2 (en) 1997-11-14 2003-01-06 Inhalation device
US10/698,950 Expired - Fee Related US7367333B2 (en) 1997-11-14 2003-11-03 Inhalation device
US11/346,573 Expired - Fee Related US8584668B2 (en) 1997-11-14 2006-02-03 Inhalation device
US13/678,893 Abandoned US20130133643A1 (en) 1997-11-14 2012-11-16 Inhalation Device

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EP (2) EP1028768A1 (en)
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KR (1) KR100518285B1 (en)
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