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Ultrasound transducer assembly having low viscosity kerf fill material

A technology for ultrasonic transducers and filling materials, which can be used in piezoelectric devices/electrostrictive devices, ultrasonic/sonic/infrasonic diagnosis, piezoelectric/electrostrictive/magnetostrictive devices, etc., and can solve problems such as crosstalk

Pending Publication Date: 2021-11-26
ECHONOUS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, kerf filling materials designed to constrain or attenuate transverse modes can be utilized; however, such kerf filling materials can lead to excessive crosstalk due to the stiffness of the kerf filling material

Method used

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  • Ultrasound transducer assembly having low viscosity kerf fill material
  • Ultrasound transducer assembly having low viscosity kerf fill material
  • Ultrasound transducer assembly having low viscosity kerf fill material

Examples

Experimental program
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Embodiment Construction

[0013] An ultrasound transducer assembly may include an acoustic backing, a plurality of piezoelectric transducer elements on the acoustic backing, and one or more matching layers on the transducer elements. A plurality of cutouts extend through the matching layer and separate adjacent transducer elements from each other. The incision is filled with an incision filling material that includes a first material, such as RTV silicone, and a solvent that reduces the viscosity of the incision filling material, such as a volatile methylsiloxane (VMS) fluid.

[0014] By reducing the viscosity of the incision filling material, more complete filling of the incision can be achieved. In addition, the reduced viscosity incision filling material facilitates the inclusion of one or more additives into the incision filling material while maintaining a viscosity suitable for completely filling the incision. Such additives may be included to modify the properties of the incision filling materi...

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Abstract

Ultrasound transducer assemblies and methods include a kerf fill material that substantially fills kerfs between adjacent transducer elements. In at least one embodiment, an ultrasound transducer assembly includes a plurality of transducer elements and a plurality of kerfs. Each of the kerfs is disposed between adjacent ones of the transducer elements. A kerf fill material is disposed in the plurality of kerfs. The kerf fill material includes a first material having a first viscosity and a solvent that reduces the first viscosity of the kerf fill material to a second viscosity that is less than the first viscosity. The kerf fill material may include a mixture of a silicone and a volatile methylsiloxane (VMS) fluid.

Description

technical field [0001] The present disclosure relates to ultrasound transducer assemblies and methods, and more particularly to ultrasound transducer assemblies and methods having a cutout filler material in cutouts that extend between adjacent transducer elements. Background technique [0002] Diagnostic ultrasound transducer assemblies typically include a plurality of cut transducer elements arranged along an azimuthal axis. Transducer assemblies may be included in devices such as ultrasound probes and used to transmit and receive ultrasound energy to produce meaningful images of targeted biological structures. Sliced ​​transducer elements typically include a piezoelectric material, one or more acoustic matching layers, an acoustic lens, and a backing structure. The spaces or gaps between adjacent transducer elements are often referred to as cutouts. [0003] It is often desirable to provide some mechanical or acoustic isolation between adjacent elements, for example to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00
CPCA61B8/4494A61B8/4444A61B8/4272B06B1/0622B06B1/0674H10N30/088B29L2031/752A61B2562/12B29C65/48C08J7/12
Inventor D·纳尔逊
Owner ECHONOUS INC
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