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US 12,357,271 B2Granted
Ultrasonic probe, ultrasonic diagnostic apparatus, and method for manufacturing backing material
AssigneeKonica Minolta, Inc.
InventorKiyokazu Morita
Life of this patent
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Abstract
An ultrasonic probe includes: a piezoelectric element; and a backing material including a matrix resin and thermally conductive particles, arranged on one direction side with respect to the piezoelectric element, wherein a ratio of thermal conductivity of the backing material in a thickness direction to the thermal conductivity of the backing material in a horizontal direction is 3 or more.
Claims3
A method for manufacturing a backing material used for an ultrasonic probe, the method comprising:
- mixing a raw material of a matrix resin, thermally conductive particles, and non-thermally conductive particles to prepare a mixture;
- and
- molding the mixture while the mixture is pressurized and heated to form a backing material, wherein
- the thermally conductive particles are made of a thermally conductive material and a number average particle size of the thermally conductive particles is 10 μm to 150 μm,
- the thermally conductive particles are oriented in a thickness direction of the backing material,
- the raw material of the matrix resin contains powder resin particles, and
- a ratio of thermal conductivity of the backing material in the thickness direction to the thermal conductivity of the backing material in a horizontal direction is 3 or more.
4 more elements
Dependencies are inferred from the claim text.