Abstract: A method for generating a spatial distribution of acoustic transmitting frequencies by a time modulated array (TMA) of transducers includes generating, by a tapped delay line, a plurality of pulsed sampling signals, wherein each pulsed sampling signal includes a series of frequency harmonics and successive signals of the plurality of pulsed sampling signals are separated by a predetermined delay time; mixing each of the plurality of pulsed sampling signals with a time-limited information signal wherein a plurality of mixer output signals is generated; bandpass filtering each of the plurality of mixer output signals; generating a first plurality of simultaneous TMA beams from the plurality of filtered and weighted output signals by driving a plurality of acoustic transducers in a spatial array of acoustic transducers, wherein each beam of the first plurality of simultaneous beams is associated with one of a plurality of transmitting carrier frequencies

Abstract: An ultrasound transducer assembly includes a housing; a wedge-shaped acoustic modal convertor (AMC) in the housing with a first surface exposed by an opening in the housing, and a second surface that meets the first surface at a tip located in the housing, and extends from the tip at an angle into the housing, wherein the second surface has a recessed portion formed therein, wherein the second surface of the AMC is oriented at a specific oblique angle to the first surface of the AMC; and a piezoelectric ultrasound transducer disposed in the recessed portion of the second surface of the AMC, wherein the piezoelectric ultrasound transducer is connected to an electrically tuned circuit that resonates at a specific frequency and has a finite bandwidth.

Abstract: An ultrasound transducer assembly includes a housing; a wedge-shaped acoustic modal convertor (AMC) in the housing with a first surface exposed by an opening in the housing, and a second surface that meets the first surface at a tip located in the housing, and extends from the tip at an angle into the housing, wherein the second surface has a recessed portion formed therein, wherein the second surface of the AMC is oriented at a specific oblique angle to the first surface of the AMC; and a piezoelectric ultrasound transducer disposed in the recessed portion of the second surface of the AMC, wherein the piezoelectric ultrasound transducer is connected to an electrically tuned circuit that resonates at a specific frequency and has a finite bandwidth.

Abstract: A method for generating a spatial distribution of acoustic transmitting frequencies by a time modulated array (TMA) of transducers includes generating, by a tapped delay line, a plurality of pulsed sampling signals, wherein each pulsed sampling signal includes a series of frequency harmonics and successive signals of the plurality of pulsed sampling signals are separated by a predetermined delay time; mixing each of the plurality of pulsed sampling signals with a time-limited information signal wherein a plurality of mixer output signals is generated; bandpass filtering each of the plurality of mixer output signals; generating a first plurality of simultaneous TMA beams from the plurality of filtered and weighted output signals by driving a plurality of acoustic transducers in a spatial array of acoustic transducers, wherein each beam of the first plurality of simultaneous beams is associated with one of a plurality of transmitting carrier frequencies

Abstract: A method for ultrasound stimulation of musculo-skeletal tissue structures includes generating a plurality of acoustic spatial-temporal modes comprised of a sinusoidal-complex, wherein the sinusoidal-complex has a modulation envelope that enhances spatial-temporal measurement accuracy at a site of a multi-layered biological tissue structure, and a pulse repetition frequency and duty cycle that are osteogenic at the site of the multi-layered biological tissue structure, beam steering the acoustic spatial-temporal modes to the site of the multi-layered biological tissue structure to promote tissue healing, and producing bi-modal stress levels in the multi-layered biological tissue structure that are sufficient to generate bone fracture healing.

Abstract: Ultrasound bandages and ultrasound transducer array bandages are provided herein to accelerate the healing of wounds by positioning the ultrasound transducer array bandages adjacent to a wound and generating ultrasonic pulses. The ultrasonic bandages generally include a backing layer and a transducer material disposed on at least a portion of the adhesive layer. The ultrasound transducer array bandages generally include a backing layer and an array comprising a plurality of transducer materials arranged in adjacent relation to define spaces therebetween, the array being disposed on at least a portion of the backing layer.

Abstract: A controller for driving an ultrasonic transducer is disclosed and includes a processor, responsive to a feedback signal, for generating control signals to an output driver which is responsive to the control signals, to cause the ultrasonic transducer to generate ultrasound having a power level corresponding to the control signal. The controller is preferably attached to a sensing circuit to determine the amount of ultrasound conductive gel associated with the ultrasonic transducer, and for generating the feedback signal therefrom. The controller includes data logging capabilities to record treatment data and prevent unnecessary extended treatment. The controller creates an environment for safer ultrasonic self-treatment by patients. The microprocessor used in the controller can be used to warn of a low battery condition or insufficient amount of ultrasound conducting gel.