| abstract |
A skin treatment device including: a housing; at least one ultrasonic transducer contained in the housing; a driver contained in the housing and electrically coupled to the at least one ultrasonic transducer and providing an excitation signal having alternating first and second waveform portions, wherein the first portion has an average imparted power greater than that of the second waveform portion; and, a cap detachably coupled to the housing and containing at least one substance to be delivered to the skin, the at least one substance being within a functional proximity to the transducers when the cap is attached to the housing; wherein, when the cap is attached to the housing and positioned adjacent to the skin, the at least one transducer emits ultrasound responsively to the excitation signal that impinges the substance and skin. |