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US 5,371,483 AGranted
High intensity guided ultrasound source
OwnerMahesh C. Bhardwajinventor
Life of this patent
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Abstract
An ultrasound source for transmitting ultrasound along a fiber or rod comprises a thin piezoelectric element having two closely spaced apart concave and convex surfaces and an acoustic intensifier abutting the concave surface. The acoustic intensifier tapers from the concave surface to a narrow cross section. A cylindrical fiber or rod extends from the acoustic intensifier at the narrow cross section.
Claims11
An ultrasound source for transmitting ultrasound vibrations along a fiber or rod comprising:
- a thin piezoelectric element having two closely spaced apart surfaces and having electrodes on each face, one of said faces forming a concave surface and the other a convex surface;
- a damping substrate abutting the convex surface;
- an acoustic intensifier abutting the concave surface, said acoustic intensifier tapering from the concave surface to a narrow cross section;
- and
- a cylindrical fiber or rod extending from said acoustic intensifier at the narrow cross section, the smallest distance across any section of the cylindrical fiber or rod being greater than one and less than five wavelengths of the ultrasound vibrations generated by the piezoelectric element.
2 more elements
Dependencies are inferred from the claim text.