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Circulation monitoring system and method

  • US 20090149764A1
  • Filed: 12/11/2007
  • Published: 06/11/2009
  • Est. Priority Date: 02/28/2007
  • Status: Active Grant
First Claim
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1. Circulation monitoring apparatus comprising:

  • a transducer configured to illuminate and monitor light fluctuations through tissue within an anatomical extremity to produce a signal indicative of the fluctuations, the transducer including a photo emitter for emitting a light signal to illuminate the extremity and a photo receptor for receiving a light signal responsive thereto;

    a processor operatively coupled with the transducer, the processor configured to analyze the signal for periodicity and to measure the signal for amplitude;

    a comparator operatively coupled with the processor, the comparator configured to compare the measured amplitude of the signal to one or more predefined threshold amplitudes; and

    an indicator operatively coupled with the comparator, the indicator configured to indicate a circulation level from the comparator.

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