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Photo-acoustic detection device and method

  • US 8,293,176 B2
  • Filed: 05/18/2011
  • Issued: 10/23/2012
  • Est. Priority Date: 07/11/2006
  • Status: Active Grant
First Claim
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1. A system for detecting one or more analytes in a bodily fluid comprising:

  • a test chamber having at least one sidewall and configured to contain at least a portion of a bodily fluid sample;

    an electromagnetic energy source configured to direct an energy source into said test chamber through said at least one sidewall and to induce a thermoelastic expansion in said one or more analytes; and

    ,a sensor configured to detect said thermoelastic expansion in said bodily fluid sample in said test chamber, said sensor comprising an acoustic sensor having a diaphragm that is deflected when an acoustic wave generated by said thermoelastic expansion strikes it, said acoustic sensor arranged on said test chamber, wherein a first side of said diaphragm is configured to be in fluid contact with the bodily fluid sample and an opposing second side is configured to be exposed to the environment.

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