US10026392B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10026392-B2 |
| Application number | US-201715582936-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 1, 2017 |
| Priority date | May 20, 2016 |
| Publication date | Jul 17, 2018 |
| Grant date | Jul 17, 2018 |
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An acoustic lens for an ultrasonic probe includes a vulcanization-molded article of a rubber composition including a first silicone rubber composition having a plasticity number of 100 or less, and a second silicone rubber composition having a plasticity number of 150 or more and 300 or less.
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What is claimed is: 1. An acoustic lens for an ultrasonic probe, comprising a vulcanization-molded article of a rubber composition including a first silicone rubber composition having a plasticity number of 100 or less, and a second silicone rubber composition having a plasticity number of 150 or more and 300 or less. 2. The acoustic lens according to claim 1 , wherein the acoustic lens has a specific gravity of 1.2 or more and 1.6 or less. 3. The acoustic lens according to claim 1 , further comprising inorganic particles having a specific gravity of 3 or more and less than 7. 4. The acoustic lens according to claim 3 , wherein the inorganic particles have a number average particle size of 0.05 μm or more and 0.5 μm or less. 5. An ultrasonic probe comprising the acoustic lens according to claim 1 . 6. An ultrasonic imaging device comprising the ultrasonic probe according to claim 5 . 7. A method for producing an acoustic lens for an ultrasonic probe, comprising the steps of: preparing a rubber composition by kneading a first silicone rubber composition having a plasticity number of 100 or less and a second silicone rubber composition having a plasticity number of 150 or more and 300 or less; and subjecting the rubber composition to vulcanization molding. 8. The method for producing an acoustic lens according to claim 7 , wherein the step of preparing the rubber composition is a step of kneading the first silicone rubber composition, the second silicone rubber composition, and inorganic particles having a specific gravity of 3 or more and less than 7. 9. The method for producing an acoustic lens according to claim 8 , wherein inorganic particles having a number average particle size of 0.05 μm or more and 0.5 μm or less are used as the inorganic particles.
containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title
of zinc · CPC title
Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material · CPC title
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using refraction, e.g. acoustic lenses · CPC title
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