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System for obtaining hemodynamic information

  • US 5,865,758 A
  • Filed: 06/11/1997
  • Issued: 02/02/1999
  • Est. Priority Date: 01/24/1997
  • Status: Expired due to Fees
First Claim
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1. A method for determining the cardiac activity of a subject, comprising the steps of:

  • (a) sensing a blood-pressure pulse wave produced by the subject, which varies in magnitude with time;

    (b) selecting a plurality of characteristic points on said wave;

    (c) measuring time intervals from said initial point of said pulse wave to said characteristic points and measuring corresponding ordinates of said pulse wave at said characteristic points;

    (d) obtaining a value corresponding to said cardiac activity from a function that relates the cardiac activity to at least one anatomical parameter of said subject, the ordinates of said blood-pressure pulse wave, and the time intervals of said biological object.

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