Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite acoustic absorber for ultrasound transducer array

A technology of ultrasonic transducers and transducers, applied in the use of sound waves/ultrasonic waves/infrasonic waves for material analysis, ultrasonic/sonic waves/infrasonic wave diagnosis, and sound-generating devices, etc., which can solve the problems of poor absorption and thermal conductivity. Limitations, overheating, etc.

Pending Publication Date: 2020-05-29
SIEMENS MEDICAL SOLUTIONS USA INC
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Higher power operation is often desirable but causes acoustic noise and more heat
Acoustic backing materials with some absorptivity and poor thermal conductivity may impose limitations on the use of transducers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite acoustic absorber for ultrasound transducer array
  • Composite acoustic absorber for ultrasound transducer array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Composite acoustic absorbers provide high attenuation and high thermal conductivity. Using a combination of distributed metal, rubber, and ceramic fillers to form a homogeneous material can provide both high attenuation, high thermal conductivity, and / or adjustable impedance. Unlike metal foam or other absorbers, the present absorber can be easily machined. Materials with high thermal conductivity generally have low acoustic attenuation. Furthermore, materials with high density (impedance) also generally have low acoustic attenuation. Combinations of three or more different types of fillers can provide high acoustic attenuation with good thermal conductivity and desirable impedance. Different types of particles contribute to different properties of the absorber.

[0012] figure 1 One embodiment of a portion of an ultrasound transducer 10 is shown. The ultrasonic transducer 10 includes an absorber for absorbing acoustic energy and providing a desired impedance and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A composite acoustic absorber for ultrasound transducer array is disclosed. Acoustic absorbers 18 are formed for ultrasound transducers 10. The acoustic absorber 18 provides desired attenuation, impedance, and thermal conductivity qualities based on a filler of rubber, ceramic, and metal particles 19. The relative amounts of the different fillers may be adjusted to tune the acoustic attenuation, thermal conductivity, and / or acoustic impedance.

Description

Background technique [0001] This embodiment relates to an acoustic backing for an ultrasound transducer. Ultrasound transducers, such as those used in medical diagnostic ultrasound imaging, include transducer elements for converting between electrical energy and acoustic energy. To absorb undesired acoustic energy and prevent reception of noise or structural echoes from outside the patient's body, an acoustically absorbing backing mass is attached to the transducer. The backing block is formed from an attenuating material for absorbing acoustic energy. The higher the attenuation, the more effective it is at preventing the reception of noise or echoes from structures outside the patient's body. An example backing material is cured epoxy with plastic filler. Epoxies with plastic filler based backing blocks generally have an acoustic impedance matched to the transducer, have some but generally not high ultrasonic absorption, and do not offer high thermal conductivity. [0002...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06G10K11/162
CPCB06B1/06G10K11/162A61B8/4488A61B8/4483B06B1/0674B06B1/0685B06B1/0622G10K11/165A61B8/4281A61B8/4494G01N29/32A61B2562/14
Inventor I.阿波图S.戴维斯P.查
Owner SIEMENS MEDICAL SOLUTIONS USA INC