Patent ID: 9242056
Filing Date: 2016-01-26
CPC Classification: A61M,G01F

Claim Text:
1. An inhaler, comprising: an external surface; a dispenser configured to dispense an aerosol or a dry powder at a dispensing position; a channel defining a flow path between the dispensing position and a gas outlet; a sensor detachably attached to the external surface, the sensor being adapted to sense vibrations or sound with a frequency in an interval of 100-3000 Hz; a processor adapted to estimate, on the basis of the vibrations/sound sensed in the interval of 100-3000 Hz, at least one parameter of a flow velocity of gas in the flow path; and a casing enclosing the sensor, wherein a front of the sensor is in direct contact with the external surface and a rear side of the sensor is in direct acoustic contact with surroundings of the inhaler via a port in the casing.