Current calibration method and device for ultrasonic transducer and ultrasonic surgical system

Through the current calibration method of ultrasonic transducer, the problem of performance degradation of ultrasonic transducer in ultrasonic surgical systems is solved, and the stability and amplitude of the system are maintained.

CN114795397BActive Publication Date: 2025-03-25SHANGHAI YISI MEDICAL TECH CO LTD +2
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Patent Information

Application Number
CN202110118202.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-01-28
Publication Date
2025-03-25
Estimated Expiration
2041-01-28

AI Technical Summary

Technical Problem

In ultrasonic surgery systems, after long-term use and multiple high-temperature and high-pressure steam sterilization, the change in its impedance value leads to a decline in performance, affecting the stability of the system.

Method used

A current calibration method for ultrasonic transducers is provided. By obtaining the original impedance value and the original excitation current value, calculating the current impedance value and calibration coefficient, and then calibrating the excitation current value to keep the terminal amplitude of the ultrasonic transducer unchanged.

Benefits of technology

Through the current calibration method, the terminal amplitude of the ultrasonic transducer before and after the performance decay is maintained to ensure the performance stability of the ultrasonic surgical system.

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Abstract

The present application relates to a current calibration method, device and ultrasonic surgical system for an ultrasonic transducer, the method comprising: obtaining the original impedance value of the current ultrasonic transducer and the original excitation current value corresponding to the original impedance value; obtaining the current resonant impedance value of the current ultrasonic transducer when outputting current to the current ultrasonic transducer according to a given current value; determining the current impedance value of the current ultrasonic transducer according to the current resonant impedance value; determining the current calibration coefficient of the current ultrasonic transducer according to the current impedance value; calibrating the original excitation current value according to the current calibration coefficient, the original impedance value and the current impedance value to obtain the current excitation current value. The above method can calibrate the current value of the excitation current input to the ultrasonic transducer when the performance of the ultrasonic transducer deteriorates, so that the amplitude of the terminal of the ultrasonic transducer remains unchanged under the excitation of the calibrated excitation current, thereby maintaining the stability of the performance of the ultrasonic surgical system.
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