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Piezo element stethoscope

  • US 8,447,043 B1
  • Filed: 05/26/2010
  • Issued: 05/21/2013
  • Est. Priority Date: 11/06/2009
  • Status: Active Grant
First Claim
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1. An active stethoscope chest piece, comprising:

  • a chest piece housing containing;

    a piezoelectric (piezo) element situated so as to pick up body sounds and provides an electrical representation of the body sounds to electrical connections;

    a printed circuit board carrying electronic components and connected to the electrical connections which processes the electrical representation of the body sounds and passes the processed electrical representation outside the housing for processing by external circuitry; and

    wherein the printed circuit board includes a backstop protruding toward a central area of the piezo element, and wherein the back stop is situated so as to prevent the piezo element from flexing beyond a point that would damage the piezo element.

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