Output measuring system for medical ultrasonic equipment

Abstract

The ultrasonic output measuring system as one medical measurement instrument has measuring hydrophone and reference hydrophone fixed on the precise orientating and positioning system with 11 freedomsfor measured probe and measuring hydrophone; storage oscilloscope-computer system with signal input connected to the measuring hydrophone and the reference hydrophone; 3D ultrasonic field step motor driving and controlling system connected to the signal output of the storage oscilloscope-computer system via RS232 interface and to the precise orientating and positioning system via drive cable and signal cable; auxiliary equipment and mechanical framework for the precise orientating and positioning system to be set on. The present invention can measure all the index parameters of ultrasonic diagnosis instrument in scanning state.

Description

technical field [0001] The invention relates to an acoustic output measurement system of ultrasonic equipment, in particular to an acoustic output measurement system of medical ultrasonic equipment, which belongs to the field of medical measuring instruments. Background technique [0002] So far, GB16846-1997 (idt.IEC61157-1992) "Medical Ultrasonic Diagnostic Equipment Acoustic Output Announcement Requirements" stipulates that the ultrasonic diagnostic equipment acoustic output announcement parameters are four basic indicators: maximum negative sound pressure p-, spatial peak time peak value derived Sound intensity I spta , output beam sound intensity I ob and the maximum time-averaged sound power P max , in addition to a series of other auxiliary parameters, about 10 items. After the novelty check station of the Ministry of Education of the People's Republic of China, it is found after searching that the documents most relevant to the present invention are: Roy C.Preston...

AI Technical Summary

Problems solved by technology

Although its measurement parameters have p-, I spta etc., but because the arc-shaped radiation end face cannot be scanned close to the hydrophone end face (requiring that the center of the arc coincides with the center of the scanning sector), the beam cannot be arbitrarily selected for measurement

Moreover, its mechanical structure has only 7 degrees of freedom to adjust, which cannot meet the requirements of 11 degrees of freedom stipulated in IEC61102-1991.

Therefore, precise orientation and positioning are not possible

In particular, this equipment cannot measure the I ob , its technology is backward, its functions are outdated, and it is an obsolete product, which cannot meet the requirements of the sound output measurement and the corresponding national standards of convex array and phased array automatic scanning systems in various working modes that have flourished later.

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