Patent ID: 7458372

Claim:
An inhalation therapy device comprising: an oscillatable membrane for nebulising a liquid, an oscillation generating device having at least one connecting means for supplying an activation signal and by means of which said membrane is caused to oscillate when the activation signal is supplied such that a liquid disposed on one side of the membrane is nebulised through said membrane and is present on the other side of the membrane as an aerosol, and a control means from which an activation signal can be supplied to the at least one connecting means of the oscillation generating device such that said oscillation generating device causes the membrane to oscillate, wherein a detection device is provided which detects at least one electric parameter of an oscillatable structure comprising the oscillatable membrane and the oscillation generating device and which determines the presence of a liquid to be nebulised based on the at least one electric parameter, the at least one electric parameter being a current consumption, a power consumption or a current/voltage phase shift of the oscillatable structure.