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Obstruction detector for a fluid flow line of a medical laboratory instrument

  • US 5,451,373 A
  • Filed: 02/16/1994
  • Issued: 09/19/1995
  • Est. Priority Date: 02/16/1994
  • Status: Expired due to Fees
First Claim
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1. An apparatus for detecting obstructions of a flow line, comprising:

  • a cylindrically-shaped essentially solid detector housing defining a concentric cavity integrally formed therein, said detector housing having first and second openings into said cavity;

    means for attaching the flow line to said detector housing whereby said first opening, said cavity, and said second opening, respectively, establish a flow path; and

    pressure detection means comprising a piezo-electric element located directly on an exterior surface of said detector housing in an area corresponding to said cavity for detecting changes in pressure within said cavity.

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