Ultrasonic array transducer and production method thereof

An ultrasonic array and transducer technology, which is applied in ultrasonic/acoustic/infrasonic diagnosis, ultrasonic diagnosis, infrasonic diagnosis, etc., can solve problems such as position deviation, ultrasonic image deviation, structural instability, etc., to reduce depth and increase stability Sexuality, the effect of a wide range of use

Active Publication Date: 2013-09-25
EDAN INSTR
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  • Abstract
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  • Claims
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Problems solved by technology

However, due to the complete cut-through of the array elements, they cannot support each other. When forming an array, they must rely on supports as a support, which greatly increases the volume of the transducer and limits the scope of application of the transducer.
Moreover, because the structure after complete cutting is unstable, for example,

Method used

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  • Ultrasonic array transducer and production method thereof
  • Ultrasonic array transducer and production method thereof
  • Ultrasonic array transducer and production method thereof

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] as attached Figure 1-4 As shown, an ultrasonic array transducer, the array element includes a piezoelectric layer (200) and a matching layer (301). The matching layer (201) between the array elements (401) is completely separated, and each array element (401) Both the transmitted and received ultrasonic energy cannot be coupled to other units through the matching layer, which effectively reduces crosstalk and suppresses the generation of noise signals. The piezoelectric layer (200) between the array elements (401) is not completely separated, so that each array element (401) can be distinguished from each other while still providing support for the formation of the array, maintaining a relatively fixed distance between the array element...

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Abstract

The invention relates to an ultrasonic array transducer and a production method thereof. The ultrasonic array transducer comprises a matching layer and a piezoelectric layer. Array elements in the matching layer are completely separated from one another, and the matching layer is used for reducing crosstalk. Array elements in the piezoelectric layer are incompletely separated from one another, and the piezoelectric layer is used for separating the array elements and providing support to an array. The structure array elements are mutually separated while being mutually connected and supported through retaining portions, so that steps for additionally adding of supporting pieces are omitted, equipment size is reduced, and the ultrasonic array transducer has larger application range; the production method of the ultrasonic array transducer has the same advantages.

Description

technical field [0001] The invention relates to an ultrasonic diagnostic device, in particular to an ultrasonic array transducer with low crosstalk and high bandwidth and a preparation method thereof. Background technique [0002] Ultrasonic array transducer is an important part of ultrasonic diagnostic imaging equipment. It can not only convert electrical excitation signals into ultrasonic signals to propagate in human tissues, but also convert ultrasonic signals reflected back from the human body into electrical signals, which are processed by the host computer to obtain Ultrasound images are used by doctors for analysis and diagnosis. The manufacturing method usually used in medical ultrasonic array transducers is: firstly, the piezoelectric wafer is bonded on the acoustic matching layer, and then the piezoelectric wafer is cut into array elements, placed in the mold to lead and pour the backing to form a line array or Convex array transducer. In the existing manufactur...

Claims

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Application Information

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IPC IPC(8): A61B8/00
Inventor 周丹罗洪波欧阳波
Owner EDAN INSTR
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