VAN DE LAAR JAKOB,DERKX RENE MARTINUS MARIA,JANSE CORNELIS PIETER
申请号：
IN201647031787
公开号：
IN201647031787A
申请日:
2016.09.19
申请国别(地区):
IN
年份:
2016
代理人:
摘要：
An inhaler with a housing (H) comprising an air inlet (A_I) and a an air outlet (A_O). Inside the housing (H) a flow path (FP) is defined between air inlet (A_I) and air outlet (A_O) where a dispenser (DP) is arranged to dispense an aerosol or a dry powder in the flow path (FP). Two sensors (S1 S2) e.g. microphones are positioned spaced apart at external surfaces of the housing (H) to sense sound or vibrations resulting from a flow in the flow path (FP) at two different positions. This allows a precise detection of flow velocity during inhalation based on the sound or vibrations sensed by the two sensors (S1 S2) thus allowing examination of correct use of the inhaler. Further the use of two spaced apart sensors (S1 S2) facilitates identification of priming and firing events in the sensed sound or vibrations which may also be used in evaluating the use of the inhaler. Preferably a noise reduction algorithm is used that exploits the differences in the captured sound or vibrations from the two sensors (S1 S2) so at to allow precise flow measurements even in noisy environments.
