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Method for measuring electroacoustic conversion efficiency of medical ultrasonic transducer

An ultrasonic transducer, electro-acoustic conversion technology, applied in the direction of sound-producing equipment, instruments, etc., can solve the problem of not having a wide range of applications, and achieve the effect of wide application range, simple design and compact structure

Pending Publication Date: 2021-11-23
HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In view of the above reasons, this method has not been widely used in practice until now.

Method used

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  • Method for measuring electroacoustic conversion efficiency of medical ultrasonic transducer
  • Method for measuring electroacoustic conversion efficiency of medical ultrasonic transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for measuring the electroacoustic conversion efficiency of a medical ultrasonic transducer, the process is as follows:

[0054] A. Assembly of ultrasonic transducer: use epoxy resin to polarize PZT4 piezoelectric ceramic sheet with roughness Ra of 400nm (1), silver-plated pure copper electrode sheet (2), front cover aluminum alloy 7075 (3 ) and the rear cover plate 304L stainless steel (4), and then use bolts (5) to fix the above components together, such as figure 2 As shown, the coaxiality is controlled at 0.02mm, and finally the ultrasonic transducer to be tested is obtained by aging at 90°C for 24 hours;

[0055] B. The output end of the ultrasonic generator is connected to the electric power meter, the output end of the electric power meter is connected to the ultrasonic transducer, the ultrasonic generator provides a sinusoidal signal with a frequency of 55KHz, and the input electric power P of the ultrasonic transducer is measured by the electric power ...

Embodiment 2

[0059] A method for measuring the electroacoustic conversion efficiency of a medical ultrasonic transducer, the process is as follows:

[0060] A. Assembly of the ultrasonic transducer: use epoxy resin to glue the polarized PZT8 piezoelectric ceramic sheet with a roughness Ra of 450nm, the silver-plated bronze electrode sheet, the front cover aluminum alloy 7075 and the rear cover 304L stainless steel. , and then use bolts to fix the above components together, the coaxiality is controlled at 0.015mm, and finally carry out aging treatment at 110°C for 12h to obtain the ultrasonic transducer to be tested;

[0061] B. The output end of the ultrasonic generator is connected to the electric power meter, the output end of the electric power meter is connected to the ultrasonic transducer, the ultrasonic generator provides a sinusoidal signal with a frequency of 50KHz, and the input electric power P of the ultrasonic transducer is measured by the electric power meter e 48w;

[0062]...

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Abstract

The invention discloses a method for measuring the electro-acoustic conversion efficiency of a medical ultrasonic transducer, which comprises the following steps of: testing the input electric power and the output sound power of the ultrasonic transducer under high power by using an electric power meter and an interference method respectively, and calculating the electro-acoustic conversion efficiency according to the ratio of the input electric power and the output sound power. Compared with the prior art, the method has the advantages of simple design, compact structure, high measurement precision, wide application range and the like, can well meet the requirements of the piezoelectric ceramic transducer, and is very suitable for testing the electro-acoustic conversion efficiency of the ultrasonic transducer.

Description

technical field [0001] The invention relates to a method for measuring electroacoustic conversion efficiency, in particular to a method for measuring electroacoustic conversion efficiency of a medical ultrasonic transducer. Background technique [0002] Ultrasound refers to sound waves with a frequency greater than 20KHz. Because of its good directionality and strong penetrating power, it has been widely used in many medical fields such as ultrasonic scalpel surgery, ultrasonic atomization, B-ultrasound examination, and ultrasonic pharmaceuticals. Compared with traditional surgery, ultrasonic scalpel surgery has the advantages of high cutting precision, small trauma, good coagulation effect, clearer field of vision, greatly shortened operation time, and faster postoperative recovery, bringing great benefits to both doctors and patients. [0003] Ultrasonic scalpel equipment is mainly composed of high-frequency power source and ultrasonic vibration system. The ultrasonic vib...

Claims

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Application Information

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IPC IPC(8): G10K9/122
CPCG10K9/122
Inventor 李益民王霄
Owner HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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