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Cardiac flow sensor

  • US 5,989,192 A
  • Filed: 09/25/1997
  • Issued: 11/23/1999
  • Est. Priority Date: 09/25/1997
  • Status: Expired due to Term
First Claim
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1. A system for determining a measure of arterial blood flow from the heart, comprising:

  • a sensor lead having thereon a pair of fast time response temperature sensors positioned a short distance apart on said lead, said lead having output terminals and conducting means for conducting said temperature signals from each of said sensors to respective ones of said output terminals;

    processing means for receiving said signals from said output terminals and for processing same to derive sets of digital representations of each of said temperature signals;

    correlation means for finding the time delay between said two temperature signals at which said signals optimally correlate; and

    computational means for computing from said time delay a measure of blood flow.

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