High-intensity ultrasound therapy method and apparatus with controlled cavitation effect and reduced side lobes
First Claim
1. A method for generating high power therapeutic ultrasound waves in a propagation medium, said ultrasound waves produced by an ultrasonic transducer having at least one ultrasound transducer element, the method comprising the steps of activating said at least one ultrasound transducer element with an electronic signal supplied by a signal generator, the signal generator supplying a wideband electronic signal to said at least one ultrasound transducer element, said wideband signal having a multiple frequency spectrum, the wideband signal configured to reduce or prevent cavitation phenomena resulting from the propagation of the ultrasound waves emitted by said at least one ultrasound transducer element within the propagation medium.
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Abstract
In a high-energy ultrasound therapy method and apparatus, said apparatus comprises a therapy device with at least one ultrasound therapy transducer element and a signal generator supplying an electronic signal to said ultrasound transducer element, the signal generator supplying the transducer(s) with a wideband electronic signal of the random or pseudo-random type.
313 Citations
22 Claims
- 1. A method for generating high power therapeutic ultrasound waves in a propagation medium, said ultrasound waves produced by an ultrasonic transducer having at least one ultrasound transducer element, the method comprising the steps of activating said at least one ultrasound transducer element with an electronic signal supplied by a signal generator, the signal generator supplying a wideband electronic signal to said at least one ultrasound transducer element, said wideband signal having a multiple frequency spectrum, the wideband signal configured to reduce or prevent cavitation phenomena resulting from the propagation of the ultrasound waves emitted by said at least one ultrasound transducer element within the propagation medium.
- 8. A therapy apparatus for generating high power ultrasound waves comprising an ultrasonic transducer having at least one ultrasound therapy transducer element and a signal generator supplying an electronic signal to said at least one ultrasound therapy transducer element, wherein said signal generator supplies a wideband electronic signal, said wideband signal having a multiple frequency spectrum and being of a random or pseudo-random type.
- 17. A method for treatment using high power ultrasound therapy waves, the method comprising the steps of supplying a wideband electronic signal to an apparatus, the apparatus comprising an ultrasonic transducer having at least one ultrasound transducer element and a signal generator for supplying the wideband electronic signal to said at least one ultrasound transducer element, said wideband signal having a multiple frequency spectrum and configured to reduce or prevent secondary focusing phenomena behind a periodic or quasi-periodic structure.
Specification