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Method and apparatus for calculating blood pressure of an artery

  • US 6,589,185 B1
  • Filed: 06/14/2000
  • Issued: 07/08/2003
  • Est. Priority Date: 11/09/1993
  • Status: Expired due to Fees
First Claim
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1. A method for determining blood pressure of an artery having a pulse, the method comprising:

  • applying a pressure to the artery;

    sensing pressure produced by the artery to produce sensed pressure data representing a pressure waveform for at least one pulse;

    deriving a plurality of parameters related to waveform shape from the sensed pressure data including at least one of the following;

    (a) rise time of a selected portion of a waveform, (b) applied pressure corresponding to a starting point of a waveform, (c) applied pressure corresponding to an ending point of a waveform, (d) pressure of a waveform at a selected time, (e) a pressure corresponding to a selected point on a waveform, (f) a time value corresponding to a width of a selected portion of a waveform, (g) mean amplitude of a waveform, (h) mean of a curve generated from data taken from a plurality of waveforms; and

    determining a blood pressure value based upon the parameters.

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