an ultrasonic transducer
A technology of ultrasonic transducer and backing layer, which is applied in ultrasonic/acoustic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc. It can solve the negative effects of ultrasonic transducer acoustic performance and affect the vibration of piezoelectric material layer, etc.
Active Publication Date: 2021-07-09
上海爱声生物医疗科技有限公司
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Problems solved by technology
In either form, the circuit board will be in contact with the piezoelectric material layer or on the sound wave transmission path, which will affect the vibration of the piezoelectric material layer, which will have a negative effect on the acoustic performance of the ultrasonic transducer
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[0027] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the drawings and specific implementation methods. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0028] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed bel...
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The application discloses an ultrasonic transducer, which includes a hollowed-out single-sided circuit board and a backing layer, a piezoelectric layer, and a matching layer stacked sequentially from bottom to top. The hollowed-out single-sided circuit board is located between the backing layer and the matching layer. And the piezoelectric layer is located in the hollow area of the hollow-out single-sided circuit board; the hollow-out single-sided circuit board includes two oppositely arranged signal line areas and two oppositely arranged ground line areas, and the signal line areas are located on the side of the backing layer and Located in the area where the upper surface of the backing layer is not covered by the piezoelectric layer in the width direction, the ground line area is located in the area where the upper surface of the backing layer is not covered by the piezoelectric layer in the length direction, and the signal is drawn out from the backing layer The signal in the line area and the signal in the ground line area. Hollow single-sided circuit board is adopted, the piezoelectric layer is located in the hollow area, and the circuit board is not on the main path of sound wave transmission, which will not affect the acoustic performance of the transducer; the circuit board and the piezoelectric layer are at the same level, and will not be affected by thickness Differences lead to differences in transducer performance.
Description
technical field [0001] The present application relates to the technical field of ultrasonic equipment, in particular to an ultrasonic transducer. Background technique [0002] Medical ultrasonic diagnostic equipment uses the reflection of ultrasonic waves on different tissue interfaces of the human body to explore the structure of human tissue, and obtains the anatomical structure image and dynamic blood flow information of the target tissue through image processing, providing morphological and functional evaluation basis for clinical diagnosis. The ultrasonic transducer is the core component of medical ultrasonic equipment, which can realize the energy conversion between electrical energy and mechanical vibration to generate ultrasonic waves, and receive the sound waves reflected by the human body to convert them into electrical signals and then image them. [0003] The ultrasonic transducer consists of a piezoelectric material layer, an acoustic matching layer, a backing, ...
Claims
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IPC IPC(8): B06B1/06A61B8/00
CPCA61B8/4483B06B1/0622B06B2201/76
Inventor 马晓雯林钟霞李建唐俊辉周兴旺
Owner 上海爱声生物医疗科技有限公司