• 1. School of Biomedical Engineering (Suzhou), University of Science and Technology of China, Suzhou, Jiangsu 215163, P. R. China;
  • 2. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, P. R. China;
MEI Qian, Email: qmei@sibet.ac.cn; DONG Wenfei, Email: wenfeidong@sibet.ac.cn
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A miniaturized, low-cost high-intensity focused ultrasound device is developed for the problems of cross-contamination and uneven sample fragmentation in conventional ultrasound devices. This device generates ultrasonic waves through a concave spherical self-focusing piezoelectric ceramic piece, and creates a cavitation effect in the focusing area to achieve sample fragmentation. The feasibility of the device is demonstrated by physical simulation, then a driving circuit with adjustable power is designed and manufactured to generate 0 ~ 22.4 W acoustic power, and finally paraffin-embedded sample dewaxing experiments are performed to verify the validation of the device. The experimental results show that the dewaxing efficiency and safety of the high-intensity focused ultrasound device is significantly better than those of traditional chemical methods, and this device is comparable with commercial ultrasonic instruments. In summary, the high-intensity focused ultrasound device is expected to be applied in automated nucleic acid extraction and purification equipment and has a broad application prospect in the field of sample pre-processing.

Citation: LEI Zhubing, PANG Xinpei, LI Li, MEI Qian, DONG Wenfei. Development of a high intensity focused ultrasound device for bio-samples preparation. Journal of Biomedical Engineering, 2024, 41(1): 152-159. doi: 10.7507/1001-5515.202304061 Copy

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