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US 12,213,834 B2Granted
Ultrasound transducer with acoustic absorber structure
AssigneeExo Imaging, Inc.
InventorsDaniela Marisa Fredrick, Charles Baumgartner, Brian Lee Bircumshaw, Joseph Michael Adam
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Abstract
Described are acoustic absorber materials with high acoustic attenuation and high thermal conductivity comprising an inorganic, porous foam and an absorbing material within at least a portion of the pores of the foam, ultrasound transducers and devices including the same, as well as methods of making the materials.
Claims25
An ultrasound probe comprising:
- (a) a printed circuit board (PCB);
- (b) an application-specific integrated circuit (ASIC) coupled to the PCB directly above the PCB;
- (c) a piezoelectric micromachined ultrasound transducer (pMUT) coupled to the ASIC;
- and
- (d) a thermally conductive acoustic absorber mounted between the PCB and a heatsink, the thermally conductive acoustic absorber comprising:
- i) an acoustic absorber comprising a porous copper foam having a plurality of pores;
- and
- (ii) an acoustic absorbing material comprising an epoxy and tungsten particle mixture within at least a portion of the plurality of pores of the porous copper foam.
5 more elements
An ultrasound probe comprising:
- (a) a printed circuit board (PCB);
- (b) an application-specific integrated circuit (ASIC) coupled to the PCB;
- (c) a piezoelectric micromachined ultrasound transducer (pMUT) coupled to the ASIC;
- and
- (d) a thermally conductive acoustic absorber mounted between the PCB and the ASIC, the thermally conductive acoustic absorber comprising:
- (i) an acoustic absorber comprising a porous copper foam having a plurality of pores;
- and
- (ii) an acoustic absorbing material comprising an epoxy and tungsten particle mixture within at least a portion of the plurality of pores of the porous copper foam.
5 more elements
An ultrasound probe comprising:
- (a) a printed circuit board (PCB);
- (b) an application-specific integrated circuit (ASIC) coupled to the PCB;
- (c) a micromachined ultrasound transducer (MUT) coupled to the ASIC;
- and
- (d) a thermally conductive acoustic absorber comprising:
- (i) a porous foam having a plurality of pores that form a semi-continuous network;
- and
- (ii) an acoustic absorbing material within at least a portion of the plurality of pores of the porous foam.
5 more elements
Dependencies are inferred from the claim text.