Inhalation device and method for production of a particulate mist for inhalation purposes
OwnerRoland Stangl, Manfred Kellerinventors
Life of this patent
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Abstract
The inhalation device comprises an oscillator (1), on which a powder (6) for nebulisation may be placed, containing a medicament and which may be activated in order to nebulise the applied powder, a mixing chamber (2) into which the powder particles are thrown and where an aerosol cloud (6a) is formed from incoherent particles, an inhalation check valve (3) which permits ambient air into the mixing chamber (2) during inhalation to evacuate the particle cloud (6a) and an exhalation check valve (4), by means of which expired air is led off into the environment to prevent damp breath entering the mixing chamber (2) during exhalation.
Claims11
An inhalation device having
- an oscillator (1) on which a powder (6) for nebulisation containing a medicament may be placed and which may be activated in order to nebulise the applied powder
- a mixing chamber (2) into which the powder particles are thrown and where an aerosol cloud (6a) is formed from incoherent particles,
- an inhalation check valve (3), which permits ambient air into the mixing chamber (2) during inhalation to evacuate the particle cloud (6a), and
- and exhalation check valve (4), by means of which expired air is led off into the environment to prevent damp breath entering the mixing chamber (2) during exhalation
An inhalation device according to one of the preceding claims, characterised in that the oscillator (1) comprises an oscillating membrane (5) on which the powder (6) to be nebulised may be placed.
An inhalation device according to one of the preceding claims, characterised in that the oscillator (1) can be activated electrostatically, electromechanically or piezoelectrically.
An inhalation device according to one of the preceding claims, characterised in that a sensor (100) for detecting the breath flow rate is provided, said sensor emitting an output signal to a control means (101) which activates the oscillator (1) when a signal value indicating the end of the exhalation phase is achieved.
An inhalation device according to one of the preceding claims, characterised in that a display means (102) is provided which is connected with the control means (101) for displaying the evaluation results for the patient.
A method for the production of a particulate mist containing a medicament for inhalation by a patient during at least one respiratory cycle comprising the following steps:
- detection of the end of the exhalation phase of the respiratory cycle;
- placing of a predetermined amount of a powder containing a medicament on the membrane of an oscillator;
- activation of the oscillator to deagglomerate the amount of powder during a first stage of the inhalation phase of the respiratory cycle;
- and
- deactivation of the oscillator following completion of the deagglomeration of the amount of powder.
Dependencies are inferred from the claim text.