Patent ID: 7675425

Claim:
A medical inhaler device comprising: a discharge head mounting unit configured with first and second electrical terminals; a power source; a switch configured to alter electrical connection between said power source and said mounting unit; and a control unit configured to control said switch; wherein a driving circuit for driving a discharge head is closed by attaching said discharge head to said mounting unit, and wherein said discharge head includes a discharging actuator, configured to discharge liquid; wherein said power source is configured so as to be able to selectively output a plurality of voltages; and wherein said control unit selectively effects a discharge electrical power supply state, wherein electric power sufficient to cause the discharging actuator to discharge liquid is supplied to said discharge head, by controlling said switch, and a diagnostic state, wherein electric power insufficient to cause said discharging actuator to discharge liquid is supplied to said discharging head by controlling said switch, the voltage of at least one of the first and second terminals is measured, and information of the state of said power source and said discharging actuator and said driving circuit is obtained.