Patent ID: 8103012

Claim:
An electromechanical system for the stimulating of vibration of biological tissue, particularly of the human throat tissue, said system comprising an electromechanical converter ( 12 ) having a self-resonant frequency and being operative for converting electric energy into mechanical energy at a linearly movable, driven element ( 14 ) arranged to oscillate about a zero-point position or from a zero-point position into a positive or negative direction, and a vibration surface ( 20 ) for acting on the biological tissue, the driven element ( 14 ) of the electromechanical converter ( 12 ) being operatively coupled to the vibration surface ( 20 ) and being supported by an elastic, resilient unit ( 24 ) having a self-resonant frequency above the self-resonant frequency of the electromechanical converter ( 12 ), whereby the vibration surface ( 20 ) is caused to oscillate across a frequency range of which the upper limit is above the self-resonant frequency of the electromechanical converter ( 12 ) and is equal to or smaller than the self-resonant frequency of the elastic, resilient unit ( 24 ), the oscillation of the vibration surface being performed with a swing which at a constant input voltage is substantially constant across the frequency.