Title:
SAMPLING DEVICE AND TUNING METHOD FOR ULTRASONIC TRANSDUCER, AND ULTRASONIC SURGICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/157658
Kind Code:
A1
Abstract:
The present invention provides a sampling device for an ultrasonic transducer, comprising: a sampling module, suitable for collecting current signals, that is, sampling signals, outputted by the ultrasonic transducer; a differential amplification module, suitable for performing differential amplification process on the sampling signals, outputting first alternating current signals; a phase filter module, suitable for acquiring, according to driving signals of the ultrasonic transducer, voltage phase signals of the ultrasonic transducer; a phase rectification and extraction module, suitable to perform, according to the voltage phase signals of the ultrasonic transducer, phase decomposition on the first alternating current signals, obtaining two current signals having same and opposite phase as the voltage phase, and summing the two current signals to obtain phase rectification signals; and a current extraction module, suitable for extracting effective current in the phase rectification signals and output the effective current. The present invention further provides an ultrasonic surgical system comprising the sampling device above, and a tuning method for the ultrasonic transducer. The present invention improves measurement accuracy of effective current, and can accurately monitor state of the ultrasonic transducer according to the effective current.
Inventors:
GUO YIJUN (CN)
CHEN JIAN (CN)
FU JIAN (CN)
ZHAO ZHENG (CN)
WEN XINGDONG (CN)
CHEN JIAN (CN)
FU JIAN (CN)
ZHAO ZHENG (CN)
WEN XINGDONG (CN)
Application Number:
PCT/CN2017/119056
Publication Date:
September 07, 2018
Filing Date:
December 27, 2017
Export Citation:
Assignee:
CHONGQING XISHAN SCIENCE & TECH CO LTD (CN)
International Classes:
B06B1/06; A61B8/00; A61B17/00
Foreign References:
| CN106725741A | 2017-05-31 | |||
| CN201226589Y | 2009-04-22 | |||
| CN105204407A | 2015-12-30 | |||
| CN102665585A | 2012-09-12 | |||
| CN201179093Y | 2009-01-14 | |||
| US5777860A | 1998-07-07 | |||
| US4973876A | 1990-11-27 | |||
| JP2007097337A | 2007-04-12 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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