Air-filled ultrasonic transducer

Abstract

The invention discloses an air-filled ultrasonic transducer. The air-filled ultrasonic transducer comprises a piezoelectric layer with a plurality of array structures, a matching layer superimposed ona negative polar plane of the piezoelectric layer, a transition backing arranged on a positive polar plane of the piezoelectric layer and used for performing sound absorption and protection on the plural array structures, slits arranged on the transition backing in match with gaps of the array structures and extend from the transition backing to predetermined positions on the matching layer, anda main backing arranged on the transition backing. The main backing and the transition backing are connected by adopting an adhesive layer, so that protection on the slits is allowed; and thus, filling of the gaps of the array structures by air is realized. The slits of the air-filled ultrasonic transducer extend from the transition backing to the predetermined positions on the matching layer, sothat the matching layer is not cut through; and thus, a complete protective surface used for protecting the array structures is formed. Moreover, due to viscosity of the adhesive layer between the transition backing and the main backing, glue of the adhesive layer will not enter the gaps between the array structures, so that filling of the gaps of the array structures by air is realized.

Description

technical field [0001] The invention relates to the technical field of ultrasonic equipment, in particular to an air-filled ultrasonic transducer. Background technique [0002] In modern medical testing activities, ultrasonic diagnostic equipment is used more and more frequently. It has become the basic equipment for clinical diagnosis and physical examination. It is widely used in obstetrics and gynecology, heart, abdomen, vascular access, urology and other departments. Convenience and display are intuitive. The use of ultrasonic diagnostic equipment continues to expand, and clinicians' demands for ultrasonic diagnostic images continue to increase. [0003] The quality of ultrasonic diagnostic images is affected by many factors. The ultrasonic transducer as the source of the ultrasonic signal directly affects the effect of the ultrasonic image. In specific applications, ultrasonic transducers usually include piezoelectric materials, matching layer materials, backing mate...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an air-filled ultrasonic transducer aiming at the above-mentioned defects of the prior art, aiming to solve the problem that the air-filled ultrasonic transducer in the prior art requires the use of thin film materials, and the The production process of ultrasonic transducers is complicated due to the high process difficulty of thin film materials

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