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Detection of bubbles during hemodynamic monitoring when performing automated measurement of blood constituents

  • US 8,323,194 B2
  • Filed: 12/18/2009
  • Issued: 12/04/2012
  • Est. Priority Date: 12/18/2009
  • Status: Expired due to Fees
First Claim
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1. A method of determining the presence of a bubble in a blood access system comprising at least one pressure detector, comprising:

  • a. Using the pressure detector to determine a first frequency response of the system at a first time;

    b. Using the pressure detector to determine a second frequency response of the system at a second time;

    c. Determining if a bubble is present in the system by comparing the first and second frequency responses.

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