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High intensity guided ultrasound source

  • US 5,371,483 A
  • Filed: 12/20/1993
  • Issued: 12/06/1994
  • Est. Priority Date: 12/20/1993
  • Status: Expired due to Fees
First Claim
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1. 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.

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