Abstract: An apparatus for oral inhalation-driven administration of therapeutic substances to the airways and lungs of a human subject, which includes a body portion having one or more air intakes for the intake of ambient air, a mouthpiece, and a cartridge receiving port for receiving and engaging a dispensing cartridge containing at least one volatile therapeutic substance.

Abstract: Systems slow breathing with positive pressure therapy. In embodiments, a current interim breathing rate target is set, and periodically magnitude of a variable pressure waveform scaled to the current interim breathing rate target is increased if breathing rate is greater than the interim rate target to lengthen breath duration. The magnitude of the pressure increase may be a function of the difference between the interim rate target and the breathing rate. The interim rate target may be reduced in response to slowing breathing rate. The waveform cycles, inhalation to exhalation, when airflow decreases to a cycle threshold. Different interim rate targets have different cycle threshold functions that allow easier cycling as the interim rate targets decrease. Similarly, the waveform triggers, exhalation to inhalation, when airflow increases to a trigger threshold. Different interim rate targets have different trigger threshold functions that allow easier triggering as the interim rate targets decrease.

Abstract: A positive exhalation pressure device (1) is described. The device (1) comprises a housing (2) having an annular chamber (5), a chamber inlet (6) configured to permit air into the chamber, a chamber outlet (7) configured to permit air out of the chamber, and a mouthpiece (8) in fluid communication with the chamber inlet. A movable body such as a ball (3) is disposed in the housing within the annular chamber and configured to revolve around the annular chamber in response to flow of air through the chamber from the chamber inlet to the chamber outlet. The movable body is configured to at least partially block the chamber outlet as it revolves around the annular chamber causing cyclical fluctuations in airflow resistance.

Abstract: An inhaler having first and second user-operable controllers configured to independently meter first and second amounts of a physiologically active substance and a pressurized gas, respectively, to a user is disclosed. A regulator is configured to release a dose to the mouthpiece in some embodiments. Triggering can be activated by one or more of (1) the user drawing a breath through the mouthpiece, and (2) the user operating a trigger.

Abstract: Capsules are provided for holding material within a vaporization chamber of a personal or portable vaporization device. Each capsule comprises a cap and a cup, each with a corresponding base wall having air inlet/outlet holes therein. The capsules are provided with first and second standoff structures that position the respective capsule to avoid occlusion of the air inlet/outlet holes by surfaces of the oven and/or lid that form the vaporization chamber. During use of the vaporization device, the capsule design encourages air to flow through the material held within the capsule via the air inlet/outlet holes, rather than flowing around the capsule to bypass the material held therein. In some embodiments, the capsules include tamper-resistant features that prevent separation of the cap and cup once assembled, thereby protecting the material held within the capsule.

Abstract: A case for a cartridge for a vapor provision device is configured such that opening the case involves a coordinated action using both hands. In some implementations, the case includes a first housing portion and a second housing portion which come together to contain and enclose the cartridge when the case is shut and separate to open the case to allow access to the cartridge.

Abstract: A dispenser with a replaceable cartridge containing a product to be dispensed, and a housing configured to removably receive the cartridge. The cartridge has a surface that is marked with a first marking, and the housing has a surface that is marked with a second marking. The housing is configured so that, when the cartridge is received by the housing, the first marking and the second marking together form a machine readable code that is detectable from outside of the housing.

Abstract: Systems and methods for classifying breathing disorders of subjects are based on the respiratory response to a change in a pressure level of a pressurized flow of breathable gas. The change presents a breathing challenge to a subject. The challenge may be limited to the inspiratory breathing phase. The inspiratory pressure level may be lower than the expiratory pressure level during challenges.

Abstract: A wearable vaporizer having a housing for receiving a cartridge full of juice or other material which may be heated by the vaporizer. A mouthpiece extends out from the housing and allows air to be drawn through the mouthpiece, across the cartridge, and thereby drawing heated juices or other substances from the cartridge through the mouthpiece. The mouthpiece can be stored within the housing and withdrawn by pulling on a crown which releases an inner tube of the mouthpiece.

Abstract: A subject is prompted to consciously alter one or more breathing parameters of respiration. To prompt the subject to alter one or more breathing parameters, a pressurized flow of breathable gas is provided to the airway of the subject. One or more gas parameters of the gas in the pressurized flow of breathable gas are adjusted to provide breathing cues to the subject that encourage the subject to consciously adjust respiration such that the one or more breathing parameters are altered. Information is also conveyed to the subject through a user interface that dynamically provides information to the subject about the breathing cues.

Abstract: The subject matter described herein is directed to articles, compositions, systems, and methods of using and preparing bioceramic compositions and to the bioceramic compositions. A bioceramic composition of the disclosure radiates infrared energy or rays and can be used in the treatment of various conditions.

Abstract: The present invention relates to a heterogeneous data cluster generation apparatus and method and a data clustering method and apparatus, and more particularly, to a data clustering method and apparatus which cluster data measured by different sensors into a number of groups. Aspects of the present invention provide an apparatus and method for generating clusters by putting together heterogeneous data which are values measured by different types of sensors. Aspects of the present invention also provide an apparatus and method for generating clusters by setting indices in order to effectively cluster multi-dimensional data, massive data, or scattered data.

Abstract: The invention relates to a small-volume nebulizer with a valve system to provide lung physiotherapy during airway therapy with small-volume nebulizers. The valve system may be incorporated into a small-volume nebulizer. The small-volume nebulizer may be pre-filled with at least one unit-dose of medicine and hermetically sealed until use. The nebulizer may be sealed at the top with a removable cap that may be detached at the time of use and replaced with a patient connector. Likewise, the nebulizer may be sealed at the bottom with a bottom cap that is replaced with a gas source at the beginning of a therapeutic aerosol treatment.

Abstract: The present invention relates to a heterogeneous data cluster generation apparatus and method and a data clustering method and apparatus, and more particularly, to a data clustering method and apparatus which cluster data measured by different sensors into a number of groups. Aspects of the present invention provide an apparatus and method for generating clusters by putting together heterogeneous data which are values measured by different types of sensors. Aspects of the present invention also provide an apparatus and method for generating clusters by setting indices in order to effectively cluster multi-dimensional data, massive data, or scattered data.

Abstract: A medicated module containing a medicament is configured for removable attachment to the mouthpiece of an inhaler. The inhaler may contain a first medicament such that a single firing of the inhaler will deliver both medicaments to the user.

Abstract: This invention provides an aerosolized inhaler which enables the drug powder to aerosolize within the inhaler by breathing in the air, comprising the main body (11) and the mouthpiece connector (12) connected thereupon, wherein the inhaler the main body (11) has drug holding opening (1), which connects with the vortex passage, and the vortex passage connects with the mouthpiece (9) on the mouthpiece connector (12). It has many obvious advantages as increasing the inhalation rate, pushing more drug granule to reach to the lower respiratory tract and even into the alveolus; and meanwhile, keeping the drug from being blown out of the inhaler when the users breathes out, preventing from cross inflection and minimizing the side effect of the drug to the whole body, and obviously lightening the burden on the users.

Abstract: A dry powder inhaler comprises an airway (1) along which, in use, air is drawn from an upstream, inlet end (2) to a downstream, outlet end (3). The airway (1) includes a medicament presentation region (4) at which, in use, a dose of medicament is presented to the airway (1), a primary air inlet (10), and a barrel (5) extending from the medicament presentation region (4) to the outlet end (3) of the airway (1). The inlet end of the barrel (5) is of reduced internal dimension relative to the medicament presentation region (4) and relative to the outlet end of the barrel (5), such that the inlet end of the barrel (5) constitutes a constriction of the airway (1). At least one secondary air inlet (11) is disposed such that, in use, air enters the airway (1) from the secondary air inlet (11) in a direction that is substantially orthogonal to the direction of flow of air along said barrel (5).

Abstract: An inhaler is instantly activated upon its removal from a cover or cover unit, and by rotating a cartridge component of the inhaler with respect to a mouthpiece portion, so as to create a flow pathway for ambient air and particles. The cartridge component includes a chamber, whose contents typically include dry powders or the like. Upon creation of the flow pathway, the contents of the chamber are instantly accessible for immediate inhalation by a user through the mouthpiece portion.

Abstract: A dosing device generating a gas flow with an active substance finely dispersed, with a first gas flow channel and with a dosing chamber that can be fitted in the area of the first gas flow channel, and a dosing chamber release mechanism with a separating element. The first gas flow channel and/or a connection between the first gas flow channel and the dosing chamber is blocked when the separating element is in a closed position. The first gas flow channel and/or the connection between the first gas flow channel and the dosing chamber is freed when the separating element is in an open position. A slide guide element can be driven by the under-pressure applied to the mouthpiece. The separating element and/or the slide guide element is provided with a slide element that influences the sliding friction properties.

Abstract: A monodose inhaler for powdered medicaments consists of a hollow substantially pipe-shaped body that has a first portion (H), for housing a capsule or cartridge of powdered medicament, defined by a wall (W) in which there are formed slots (S) as air intakes to an inner region where the powder drops, and a second portion (M) connected to the first portion (H) for delivering the medicament by means of a primary stream (F) that carries the powder from the drop region along a delivery duct (D) whose end is suitable to be placed in the patient's mouth, and it further includes a secondary duct (D?) located under the delivery duct (D) and provided with its own air intake (S?) for delivering a powderless secondary stream (F?).

Abstract: An inhaler is instantly activated upon its removal from a cover or cover unit, and by rotating a cartridge component of the inhaler with respect to a mouthpiece portion, so as to create a flow pathway for ambient air and particles. The cartridge component includes a chamber, whose contents typically include dry powders or the like. Upon creation of the flow pathway, the contents of the chamber are instantly accessible for immediate inhalation by a user through the mouthpiece portion.

Abstract: A personal vapor inhaling unit is disclosed. An electronic flameless vapor inhaler unit that may simulate a cigarette has a cavity that receives a cartridge in the distal end of the inhaler unit. The cartridge brings a substance to be vaporized in contact with a wick. When the unit is activated, and the user provides suction, the substance to be vaporized is drawn out of the cartridge, through the wick, and is atomized by the wick into a cavity containing a heating element. The heating element vaporizes the atomized substance. The vapors then continue to be pulled by the user through a mouthpiece and mouthpiece cover where they may be inhaled.

Abstract: Inhaler for inhaling powdered medicaments from capsules, comprising a lower part (6), a plate (3) accommodated in the lower part (6), and a holder (18) inserted in the lower part (6), a mouthpiece (2) that can be latched to the lower part (6) on the plate (3), a cover (1) that covers the mouthpiece (2) in a closed position and latches by means of a closure element (14), the lower part (6) and the cover (1) being rotatably (4) connected to one another by a spindle (4), and an actuating member (7, 10) that can be moved from a resting position and set in motion and at the same time co-operates with at least one pin (8, 11) that can be stuck into the holder (18) and is located in a pin holder in the inner actuating member (10). In the holder (18) an exchangeable tube (22) can be inserted, as expulsion channel, which comprises a capsule chamber (21) with the capsule.

Abstract: A medicament dispenser for use with at least one medicament carrier carrying multiple distinct medicament portions, said medicament dispenser comprising (a) a dispensing mechanism actuable for dispensing the distinct medicament portions carried by the at least one medicament carrier; (b) a mouthpiece; and (c) a cover for the mouthpiece, the cover being movably mounted to the dispenser for sequential movement from a first position, in which the mouthpiece is covered, to a second position, in which the mouthpiece is at least part-uncovered, to a third position in which the mouthpiece is uncovered; wherein the cover is adapted to couple with the dispensing mechanism such that movement of the cover from the second position to the third position, but not the first position to the second position, results in actuation of the dispensing mechanism.

Abstract: A portable hand-held vaporizer assembly that has a body shaped to fit substantially within a standard-sized clothing pocket with the body including an airflow chamber defining an airflow passage and having a proximal end and a distal end, opposite to the proximal end, defining a distal opening that places the airflow passage in fluid communication with an outside environment, the airflow chamber being at least partially encapsulated within the body. The body further having a convection-based heating element assembly with a heating element having a portion thermally coupled to the airflow passage, a herb placement zone in fluid communication with the airflow passage, and a conductive conduit that places the airflow passage in fluid communication with the outside environment, with a first position where a distal end of the conduit is substantially recessed within the body and second position where the distal end extends a length away from the body.

Abstract: An atomizer and a method of dispensing and atomizing fluid into individual containers through a nozzle are proposed, where in order to improve the dosing accuracy, a preliminary amount of fluid, flushing the nozzle, is dispensed before each dose is dispensed.

Abstract: A nozzle apparatus for dispensing an adjustable combination of gas, having a nozzle outlet adjustably combined with a delivery component. The nozzle outlet may have a groove for receiving a roll pin; and an inner lumen comprising a cylindrical shaft having a diameter between 5/1000ths and 20/1000ths of an inch. The delivery component configured to receive air from the nozzle outlet, may have a first circular ambient air hole having a diameter, and a second circular ambient air hole having the same diameter as the first ambient air hole, and a removable plugging device covering the second circular ambient air hole. The delivery component may be adjustable in orientation with respect to the nozzle outlet, and may be adjustable to vary a concentration of therapeutic gas delivered to a patient.

Abstract: A dry powder inhaler for pulmonary or nasal use, employing capsules containing a dose of powder for inhalation, comprising two operating components and an optional cover. Air is drawn by the patient via a mouthpiece or nosepiece which is in communication with the capsule and travels via air paths through the device and through the capsule thereby dispersing and entraining the dose of powder. The capsule is cut by cutting means located on one of the components, in a manner which eliminates or minimizes capsule debris and minimizes powder leakage during use. The inhaler body and capsule cutting blades comprise a single operating component and they may be manufactured in a single unitary step. The invention affords a very economical and simple device for the delivery of pulmonary medicines.

Abstract: A personal vapor inhaling unit is disclosed. An electronic flameless vapor inhaler unit that may simulate a cigarette has a cavity that receives a cartridge in the distal end of the inhaler unit. The cartridge brings a substance to be vaporized in contact with a wick. When the unit is activated, and the user provides suction, the substance to be vaporized is drawn out of the cartridge, through the wick, and is atomized by the wick into a cavity containing a heating element. The heating element vaporizes the atomized substance. The vapors then continue to be pulled by the user through a mouthpiece and mouthpiece cover where they may be inhaled.

Abstract: An inhaler device includes an air conduit including a mouthpiece and a dosing means adapted to provide a dose of powder to the air conduit for entrainment in the stream of air. In the area downstream from the dosing means the wall of the air conduit is provided with a secondary air inlet extending to the direction of the mouthpiece such that the entry of secondary air occurs over an extended length of the air conduit downstream from the dosing means.

Abstract: An inhaler for delivery of a powder-form inhalation formulation from a blister strip with a plurality of blister pockets. The used part of the blister strip with empty blister pockets is wound onto a drum which is driven via a gear mechanism which is coupled to the drum via a spring. The spring allows for the different peripheral speeds of the wound-up part to be compensated.

Abstract: A headgear (200) for a respiratory mask (202) of a ventilator or CPAP device is provided. The headgear includes a strap portion (204, 206) formed of a substantially inextensible material. The strap portion has formed on one end thereof a connecting structure configured to connect to a mask of the ventilator or CPAP device. One advantage is that the mask will not or at least will be less inclined to lift off the face as mask pressure is increased.

Abstract: An exhalation breath-actuated nasal deliver device for and a method of delivering a substance to a nasal cavity of a subject, the delivery device comprising: a nosepiece for fitting to a nostril of a subject; a mouthpiece through which the subject in use exhales; and delivery unit, as one of a mechanical delivery pump or a nebulizer, for delivering a substance to the nosepiece; and an actuation mechanism for actuating the delivery unit in response to oral exhalation through the mouthpiece, and preferably when at least one or both of the pressure at or the flow rate through the nosepiece exceeds a predetermined threshold.

Abstract: A medication inhaler comprising an inhaler body, having a medication container chamber for receiving a medication container and an air passage coupling the medication container chamber with exterior air, and a mouthpiece axially engageable with the inhaler body. The mouthpiece has a mouthpiece chamber and a medication delivery needle communicating with the mouthpiece chamber. The needle extends toward the medication container chamber and has an opening for supplying exterior air and medication from an interior cavity of the medication container, accommodated within the medication container chamber, through the needle and to mouthpiece chamber.

Abstract: A user inhales medicine ejected from the medicine ejecting section of an inhaler into the air flow duct of an air flow duct forming member through a hole. As the air flow duct forming member is taken off from the inhaler body, the medicine ejecting section is covered by a cap for protection. As the air flow duct forming member is fitted to the inhaler body, the cap is opened and a sensor recognizes the open state of the cap so that the air flow duct forming member is prohibited from being fitted to and taken off from the inhaler body by a claw that is secured to the air flow duct forming member. In this way, the medicine ejecting section is prevented from being damaged when the air flow duct is fitted to and taken away from the inhaler.

Abstract: Methods and apparatus for determining the occurrence of an apnea, patency and/or partial obstruction of the airway are disclosed. Respiratory air flow from a patient is measured to give an air flow signal. The determination of an apnea is performed by calculating the variance of the air flow signal over a moving time window and comparing the variance with a threshold value. One determination of partial obstruction of the airway is performed by detecting the inspiratory part of the air flow signal, scaling it to unity duration and area and calculating an index value of the amplitude of the scaled signal over a mid-portion. Alternatively, the index value is a measure of the flatness of the air flow signal over the mid-portion.

Abstract: Dry powder inhalers include: (a) a first generally planar spiral travel path in an inhaler body, wherein the first spiral travel path has a plurality of adjacent curvilinear channels forming lanes with upstanding sidewalls, including an inner lane and an outer lane; and (b) a plurality of discrete sealed microcartridges with substantially rigid bodies disposed in the first travel path, each comprising a pre-metered (typically dose) amount of dry powder, the microcartridges being configured to slidably advance along the first travel path toward an inhalation chamber that merges into an inhalation output port. In operation, at least one microcartridge is held in the inhalation chamber to release the dry powder therein during inhalation.

Abstract: A medication inhaler for concurrently delivering multiple doses of medications including an inhaler body having a medication container chamber for receiving a plurality of medication containers and at least one air passage connecting the medication container chamber with external air, a mouthpiece axially engageable with the inhaler body and having a mouthpiece chamber for communication with a patient's respiratory system, and a hollow medication delivery needle communicating with the mouthpiece chamber. A medication delivery needle penetrates the medication containers when the inhaler is actuated and has at least one opening for passing exterior air and medication from interior spaces of the medication containers and through the needle to mouthpiece.

Abstract: The present invention provides a novel dry powder inhalation system suitable for transpulmonary administration. The dry powder inhalation system of the invention characterized by using a combination of: (1) a vessel housing a freeze-dried composition that contains a single dose of an active ingredient, and has: (i) a non-powder cake-like form, (ii) a disintegration index of 0.015 or more, and (iii) a property of becoming fine particles having a mean particle diameter of 10 microns or less or a fine particle fraction of 10% or more upon receipt of an air impact having an air speed of at least 1 m/sec and an air flow rate of at least 17 ml/sec; and (2) a device comprising means capable of applying said air impact to the freeze-dried composition in said vessel, and means for discharging the powder-form freeze-dried composition that has been made into fine particles.

Abstract: The present invention provides a dispensing apparatus for delivering metered doses of product from a pressurised dispensing container comprising: a housing comprising a body portion and a removable mouthpiece, the body portion containing a dose counting mechanism and a sleeve; the body portion comprising an aperture through which said pressurised dispensing container can pass to be received in the sleeve but through which the sleeve is unable to pass such that the sleeve is retained within the body portion; the sleeve being located in the body portion such that an upper end of said pressurised dispensing container when received in the sleeve is accessible to allow actuation of said pressurised dispensing container; the apparatus comprising means for retaining said pressurised dispensing container in the body portion.

Abstract: A dry powder inhaler has a main airflow path including a cyclone chamber (16) having an air inlet and being so shaped that at least a part of the chamber decreases in cross-sectional area in a direction away from the air inlet, so as thereby in use to set up a reverse flow cyclone in the chamber. A bypass airflow path (8) bypasses the cyclone chamber and the main and bypass airflow paths communicate with a mouthpiece (6). The cyclone chamber may be provided by a part (22) which is removable from the rest of the inhaler for regular replacement thereof.

Abstract: The subject invention provides a powder inhaler enabling the user to complete powder drug inhalation with fewer steps, for improved user convenience. A powder inhaler of the present invention comprises: a housing 1A having an admission port 2f on one end; a supplier having a drug-discharging hole, provided inside the housing 1A with a capacity sufficient to contain plural doses of a fine powder drug; a drug carrier having a measurement concave portion for receiving a single dose of a drug from the drug-discharging hole, the drug carrier being supported inside the housing 1A while being movable between a drug-receiving position for allowing drug supply from the drug-discharging hole to the measurement concave portion, and a drug-inhalation position for allowing drug inhalation from the measurement concave portion through the admission port; a cover cap C2 pivotably mounted to the housing 1A; and a vibrating means 60 brought into operation by pivoting the cover cap C2 so as to vibrate the supplier.

Abstract: The invention provides an inhaler for dispensing medicament. The inhaler comprises auxiliary energy provision means for providing auxiliary energy for aerosolizing medicament; energy release means for releasing auxiliary energy from the auxiliary energy provision means; feed means for feeding a dose of medicament, characterized in that the inhaler comprises control means for controlling a time interval between aerosolization of the medicament and a user's inhalation. The inhaler is operable, in use, to aerosolize medicament using the auxiliary energy, and harness the user's inhalation to deliver the aerosolized medicament to the user.

Abstract: A portable universal inhaler system formed from an outer part and an inner part slidably received in the outer part. The inner part defines a compartment for receiving a medication canister and includes a universal connector for making a fluid dispensing connection to a variety of commercially available canisters. The inner and outer parts, when assembled, together form a housing that defines a chamber of sufficient volume to house a metered dose of medication. A mouthpiece or mouthpiece attachment location is provided in fluid communication with the chamber for permitting inhalation of medication from the chamber. The structure of the device makes it compact and portable, in the closed position, allows for storage of a medication canister in operative engagement with the device, and provides a convenient way to dispense medication, using a medication canister and a chamber, for inhalation by a user.

Abstract: Pharmaceutical dry powder containers adapted for use in an inhaler and associated inhalers and kits thereof include at least a pair of cooperating generally tubular members, including an inner member and a generally tubular outer member sized and configured to slidably receive the inner member. In operation, at least one of the inner or outer members slide relative to the other to release a pharmaceutical dry powder.

Abstract: An inhaler has an air inlet port and an entry passage extending from the air inlet port to a contact chamber inlet port, a contact chamber and an inhaler air outlet port. The contact chamber has first and second opposed ends, a sidewall extending between the first and second opposed ends that in cross section is curved, the second opposed end having an opening in air flow communication with a dosage chamber and a contact chamber outlet port. The contact chamber inlet port is provided in the sidewall and faces a portion of the sidewall opposed to contact chamber inlet port. The contact chamber has a cross sectional area that is greater than the cross sectional area of the entry passage.

Abstract: An inhaler is instantly activated upon its removal from a cover or cover unit, and by rotating a cartridge component of the inhaler with respect to a mouthpiece portion, so as to create a flow pathway for ambient air and particles. The cartridge component includes a chamber, whose contents typically include dry powders or the like. Upon creation of the flow pathway, the contents of the chamber are instantly accessible for immediate inhalation by a user through the mouthpiece portion.

Abstract: Described are dry powder inhalers composing an intake section, a mixing section and a mouthpiece. The mixing section can accommodate a capsule having a top keying portion and containing a dry powder medicament. The top keying portion of the capsules may fit within complementary keying structures in inhaler mixing sections.

Abstract: A dry powder inhaler for pulmonary or nasal use, comprising at least an inhaler body and a cartridge with one or more compartments each containing one dose of a drug. The compartment has holes to admit air and holes to deliver powder, which, in use, communicate with an inhalation channel in the inhaler body. To prevent the powder from leaking through the compartment holes before use, the air admission holes are of reduced dimension, thereby blocking or hindering powder exit under the force of gravity. When the cartridge is inserted inside the inhaler body, all its holes can be blocked. By sliding the cartridge in relation to the body until the inhalation position is reached, the holes come into in fluid communication with one another and with the inhalation channel, thereby allowing a flow of air to disperse and entrain the dose through the mouthpiece. Five embodiments are disclosed.

Abstract: A breath-actuated inhaler for delivery of a medicament by inhalation from a canister (2) which is compressible to deliver a dose of medicament. The inhaler comprises a housing (1) for holding a canister (2) and including a mouthpiece (5) for delivery of a dose of medicament from a canister (2) held in the housing; and an actuation mechanism (6) for compressing a canister (2) held in the housing (1) in response to inhalation at the mouthpiece (5). The housing includes two separable portions (19, 20). The first housing portion (19) mounts the actuation mechanism (6). The second housing portion (20) houses the mouthpiece (5) and a duct (24) shaped to direct an inhalation flow from the mouthpeice (5) to the first housing portion (19) for triggering the actuation mechanism (6). The duct (24) and the mouthpiece (5) are integrally formed and separable from the second housing portion (20).