A linear resonant device and a braking method for the same. The linear resonant device comprises a linear resonant motor and a drive chip. The drive chip pre-stores a drive waveform and at least one first braking waveform therein. The method comprises: determining, in response to a braking instruction, whether vibration of the linear resonant motor meets a first condition while being driven by the drive waveform; and if so, controlling the drive chip to drive, by using the first braking waveform, the linear resonant motor and to conduct a first braking process for the linear resonant motor, wherein the first braking waveform comprises at least two pulse waveforms, and an amplitude value of each of the at least two pulse waveforms gradually decreases along a propagation direction of the first braking waveform.

A hypersonic harmonic exciter system to enable hypersonic speed, including a hypersonic harmonic exciter body having a plurality angled sides forming exciter body hollow structure with an access aperture, vibration inducing wave apparatus configured to produce and project vibration harmonic waves that converge on a convergence harmonic point forward of the hypersonic harmonic exciter body, the vibration inducing wave apparatus having vibration apparatus hollow structure with a series of exterior concentrically positioned vibration inducing bands, the vibration inducing wave apparatus inserted in the exciter body hollow structure, and harmonic sound projecting apparatus configured to produce and project harmonic sound waves that converge on the convergence harmonic point forward of the hypersonic harmonic exciter body, the harmonic sound projecting apparatus having sound apparatus hollow structure with a series of exterior concentrically positioned sound emitter bands, the harmonic sound projecting apparatus inserted in the vibration apparatus hollow structure.

This invention relates generally to an ultrasound device configured to generate a frustum-shaped beam capable of fragmenting a plurality of biomineralizations located within a patient's body in combination with synthetic cavitation nuclei. The ultrasound device includes a transducer assembly comprising a plurality of ultrasound transducer elements, and a multi-channel amplifier circuit. Each channel of the multi-channel amplifier circuit is configured to actuate a distinct subset of the plurality of transducer elements. The multi-channel amplifier circuit is configured to operate in each of a plurality of states, each state of comprising a set of frequencies at which each channel of the multi-channel amplifier circuit is configured to actuate the distinct subset of transducer elements. The multi-channel amplifier circuit is further configured to switch between the plurality of states, thereby causing the plurality of ultrasound transducer elements to produce a frustum-shaped beam.

An ultrasonic probe includes: an ultrasonic vibrator that transmits and receives an ultrasonic wave; a wire member that is electrically connected to the ultrasonic vibrator and is provided along a side surface of the ultrasonic vibrator; a shield member that is provided outside the wire member from a viewpoint of the ultrasonic vibrator and electrically protects the ultrasonic vibrator; and a first heat conduction member that is provided in contact with the ultrasonic vibrator, wherein the first heat conduction member and the shield member are thermally connected to each other.

The present disclosure relates to circuitry for driving a piezoelectric transducer based on an input signal. The circuitry comprises: primary driver circuitry configured to receive the input signal and to output a primary driving signal to the piezoelectric transducer based on the input signal; and secondary driver circuitry configured to receive an error signal indicative of an error between the input signal and the primary driving signal and to output a secondary driving signal to the piezoelectric transducer based on the error signal, wherein the primary driver circuitry and the secondary driver circuitry both comprise switching converter circuitry.

An ultrasonic sensor and a display device and may drive a plurality of sensing pixels disposed in the ultrasonic sensor simultaneously to transmit an ultrasonic wave, may make a first electrode disposed in a sensing pixel to be floated at a timing receiving a reflected signal to store the signal, and then may perform a sensing sequentially. Therefore, as an accurate sensing may be possible while reducing a duration and a number of an ultrasonic wave transmitting, a sensitivity and an accuracy of a sensing may be maintained while improving a driving efficiency of the ultrasonic sensor.

A sound wave treatment device for medical treatment using compression waves, in particular for lithotripsy, includes a sound wave generator, a plurality of piezo elements that are coupled to the sound wave generator, and, an electrical high voltage unit that is set up for supplying the piezo elements with high electrical voltage. The high voltage unit has a blocking converter unit having a transformer, wherein the transformer has a primary coil, a high voltage coil, and spacers, wherein the high voltage coil has a plurality of high voltage windings that are embedded in an insulating mass and are positioned using the spacers such that adjacent high voltage windings are at a defined distance (a) from one another due to the spacers.

Driver circuitry for driving an electromechanical load with a drive output signal, the driver circuitry comprising: a first control loop operable to control the drive output signal based on a drive input signal; and a second control loop operable to control the drive output signal based on a current flowing through and/or a voltage induced across the electromechanical load, wherein the second control loop is configured to have a lower latency than the first control loop, and to control the drive output signal to compensate for an impedance of the electromechanical load.

Disclosed are methods of producing randomized ultrasound waves for providing sonodynamic therapy. The method includes coupling a sonodynamic therapy device with an array of piezoelectric transducer elements to a skin surface. A controller is configured to generate an electrical drive signal to produce ultrasound waves to activate a sonosensitizer in a treatment region without damaging healthy cells in the treatment region.

This patent disclosure relates to an ultrasound transducer including an array of ultrasound transducing elements, a plurality of transducer drive lines. The ultrasound transducer further includes an array of control circuits, wherein each individual control circuit includes a drive switch and a memory element, the drive switch comprising at least one thin-film transistor, the memory element being configured to store and control the state of the drive switch. The ultrasound transducer further configured so each individual ultrasound transducing element of the array of ultrasound transducing elements has one associated control circuit of the array of control circuits and one associated transducer drive line of the plurality of transducer drive lines, and wherein the ultrasound transducer is configured to, for each individual ultrasound transducing element, drive the individual ultrasound transducing element by the associated transducer drive line when the drive switch of the associated control circuit is in the on-state.