Ultrasonic medical treatment device with variable focal zone
First Claim
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1. An ultrasonic medical treatment device comprising:
- a probe having a plurality of wave-generating elements each for focusing ultrasonic pressure waves at a respective linear locus of focal points extending in at least one dimension, the loci of focal points being different and spaced from each other, said wave-generating elements being translationally and rotationally stationary relative to one another,said wave-generating elements including ultrasonic electromechanical transducer elements for vibrating at least one surface to generate ultrasonic pressure waves focused along the respective loci, said wave generating elements having wave-generating surfaces of different fixed geometric shapes configured to focus ultrasonic waves along the respective loci and having longitudinal axes parallel to and spaced from the respective wave generating-surfaces, the loci of focal points of the different wave-generating surfaces being parallel to the respective longitudinal axes,said transducer elements of different ones of said wave-generating elements being independently energizable to focus ultrasonic waveform energy selectively along said different loci.
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Abstract
An ultrasonic medical treatment device takes the form of an elongate probe having an elongate wave-generating concave surface with a longitudinal axis and ultrasonic electromechanical transducer elements for vibrating said concave surface to generate ultrasonic pressure waves focused along a linear locus extending parallel to said longitudinal axis. The probe may include a monolithic piezoelectric crystal element and electrode pairs provided along the unitary or monolithic element in a spaced array.
73 Citations
16 Claims
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1. An ultrasonic medical treatment device comprising:
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a probe having a plurality of wave-generating elements each for focusing ultrasonic pressure waves at a respective linear locus of focal points extending in at least one dimension, the loci of focal points being different and spaced from each other, said wave-generating elements being translationally and rotationally stationary relative to one another, said wave-generating elements including ultrasonic electromechanical transducer elements for vibrating at least one surface to generate ultrasonic pressure waves focused along the respective loci, said wave generating elements having wave-generating surfaces of different fixed geometric shapes configured to focus ultrasonic waves along the respective loci and having longitudinal axes parallel to and spaced from the respective wave generating-surfaces, the loci of focal points of the different wave-generating surfaces being parallel to the respective longitudinal axes, said transducer elements of different ones of said wave-generating elements being independently energizable to focus ultrasonic waveform energy selectively along said different loci. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification