Patent ID: 6565520
Filing Date: 2003-05-20
Classification: A61B,A61N,B06B

Abstract:
A non-invasive dual-frequency body-applicator therapeutic device, comprising first and second ultrasonic piezoelectric transducers on a single axis of longitudinal acoustic propagation, the first transducer including at one longitudinal end a generally cylindrically annular body-application head having a cylindrical bore on said axis, said first transducer having means for independent connection to a first source of ultrasonic acoustic-signal excitation at a first frequency within the range 10 kHz and 4 MHz; said second transducer having means for independent connection to a second source of ultrasonic acoustic-signal excitation at a second frequency within said range and being mounted in said bore with at least some acoustic isolation from said first transducer, and having at said longitudinal end a body-application head; said first frequency being lower than said second frequency, and said annular body-application head having a body surface-active engagement face of a material having impedance-matching properties with respect to engaged regions of a body-tissue area contacted by the impedance-matching active-engagement face of said annular body-application head.