Ultrasonic transducer sampling device and ultrasonic surgical system

Abstract

The invention provides a sampling device of an ultrasonic transducer, comprising: a sampling module, which is suitable for collecting the output current signal of the ultrasonic transducer, that is, a sampling signal; a differential amplification module, which is suitable for performing differential amplification processing on the sampling signal, and outputs The first AC signal; the phase filtering module, adapted to obtain the voltage phase signal of the ultrasonic transducer according to the driving signal of the ultrasonic transducer; the phase rectification extraction module, adapted to perform the first AC signal according to the voltage phase signal of the ultrasonic transducer Phase decomposition is performed to obtain two current signals with the same and opposite phases as the voltage, and the two current signals are summed to obtain a phase rectification signal; the current extraction module is suitable for extracting the effective current in the phase rectification signal and outputting the effective current. The present invention also provides an ultrasonic transducer comprising the above-mentioned sampling device. The measurement accuracy of the effective current is improved, and at the same time, the state of the ultrasonic transducer can be accurately monitored according to the effective current.

Description

technical field [0001] The invention relates to ultrasonic treatment technology, and relates to a sampling device of an ultrasonic transducer and an ultrasonic operation system. Background technique [0002] In the ultrasonic transducer, in order to enable the ultrasonic transducer to enter the resonant working state, or to respond to the working state of the ultrasonic transducer, it is necessary to sample the current of the output circuit of the ultrasonic transducer, and then according to the current signal obtained by sampling To judge whether it has reached the required voltage value of the piezoelectric sheet in the resonant working state, or truly and effectively reflect the current working state of the ultrasonic transducer. [0003] In the prior art, there is a peak detection method to detect the current, and an average method is also used to detect the current, but there is a problem in these methods: the peak value or average value obtained by collecting and calcu...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a sampling device for ultrasonic transducers and an ultrasonic surgical system, which are used to solve the problem of inaccurate sampling values ​​of the effective current of ultrasonic transducers in the prior art

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