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Method and apparatus for occlusion monitoring using pressure waveform analysis

  • US 5,906,589 A
  • Filed: 11/13/1996
  • Issued: 05/25/1999
  • Est. Priority Date: 11/13/1996
  • Status: Expired due to Fees
First Claim
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1. A method of monitoring for occlusion of a conduit in a flow circuit, said flow circuit comprising a first conduit having a flow therethrough, a fluid supply, a second conduit extending between said fluid supply and a first location on said first conduit at which said first and second conduits are fluidly connected, and a pump disposed between said first location and said fluid supply and interfacing with said second conduit, said method comprising the steps of:

  • pumping a fluid from said fluid supply through said second conduit and into said first conduit using said pump;

    monitoring a pressure in said first conduit at a second location; and

    monitoring for an occlusion of any portion of said second conduit disposed between said fluid supply and said pump using said monitoring a pressure step.

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