EP3485930A1 — Inhalation system

USPTO Abstract

An inhalation system comprising a metered dose inhaler (2) for dispensing an aerosol dose during use and a separate computing device for computing signals received from the metered dose inhaler. The metered dose inhaler (2) comprises a flow rate sensor (16) for detecting an inhalation flow through the actuator housing (4) during use of the metered dose inhaler (2) upon inhalation by a patient and a transmitting unit (20) for transmitting a signal of the at least first switch (10a) as well as of the flow rate sensor (16) to the computing device (3). The computing device (3) is configured to generate visual and/or acoustic messages independently of the signals of the at least one switch (10a) and the flow rate sensor (16) in order to guide the patient through multiple steps of the use of the metered dose inhaler (2). The computing device is further configured to evaluate the use of the metered dose inhaler (2) by comparing the transmitted signals of the at least first switch (10a) and of the flow rate sensor (16) with the visual and/or acoustic messages. The transmitting unit (20) is configured to transmit the signals of the at least first switch (10a) and the flow rate sensor (15a) to the computing device (3) after the use of the metered dose inhaler (2).