Ultrasonic mechanical damage and thermal coagulation device and method based on dual-frequency confocal ultrasonic time-sharing excitation
A thermal coagulation, high-frequency ultrasonic technology, applied in ultrasonic therapy, treatment and other directions, can solve problems such as increased risk and complication rate, tissue damage, long treatment time, etc., achieve high-efficiency mechanical damage and thermal coagulation, and improve efficiency. Effect
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[0027] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
[0028] Based on the application status of high-intensity focused ultrasound, the present invention proposes a method based on dual-frequency confocal power ultrasonic time-sharing excitation to finally improve the efficiency of ultrasonic mechanical damage and thermal coagulation. On the one hand, the absorption of ultrasound by biological tissue increases linearly with its frequency, and the higher the frequency, the more energy will be converted into tissue temperature rise, so high-frequency ultrasound is more suitable for thermal ablation of tissue; the other On the one hand, the threshold of cavitation in tissue or liquid is proportional to the frequency of ultrasound, that is, the lower the frequency, the lower the cavitation threshold, so low-frequency ultrasound is more likely to produce ultrasonic cavitation, which is more suitable for mechanica...
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