Phased-array high-strength focused ultrasonic driving circuit

Abstract

The invention discloses a phased-array high-strength focused ultrasonic driving circuit. The circuit comprises an AC-DC power supply, a management control circuit and a power emission circuit. The management control circuit is connected to the power emission circuit through a self-defined bus and I2C bus, sends a control instruction to the power emission circuit and receives state information fed back by the power emission circuit. The power emission circuit takes a high precision FPGA as a timing sequence so as to generate a reference, and uses a special-purpose current driving chip and combines a depletion type MOS pipe so as to form an amplification circuit. In a traditional driving circuit, an integration level is low and control is complex. By using the circuit of the invention, the above problems are solved, various kinds of waveforms of a square wave, a sine wave, a triangular wave and the like can be emitted, and good adaptability is possessed. In the invention, man-machine interaction, peripheral equipment management, timing sequence control, waveform generation, power amplification, feedback control and other functions are integrated into one body, an upper computer in a traditional driving system is combined with the driving circuit, and a good integrated level and simple control are realized on the driving circuit.

Description

technical field [0001] The invention relates to a phased array high-intensity focused ultrasound system, in particular to a phased array high-intensity focused ultrasound drive circuit, which is applied to the ultrasonic power transmission control and system logic management in the high-intensity focused ultrasound treatment system, and belongs to medical The field of therapeutic equipment. Background technique [0002] High Intensity Focused Ultrasound (HIFU) is to gather ultrasonic energy in a specific area of ​​the human body, where the human tissue is heated up, causing tissue degeneration, and combined with mechanical effects, cavitation effects, etc. to achieve ablation Effect. Outside the focus area, because the ultrasonic waves are not focused and the energy density is very low, there will be no temperature rise, and no damage to normal tissues. Focused ultrasound ablation is an emerging non-invasive medical method and is welcomed by doctors and patients because it...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design a phased array high-intensity focused ultrasound drive circuit, which uses a high-precision FPGA as a timing reference, uses a dedicated current drive chip combined with a depletion-type MOS tube as an amplifying circuit, and solves the traditional phase control problem. The array high-intensity focused ultrasound drive circuit has the problems of low integration, complex control, and only a single waveform that can be transmitted, which has better adaptability

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