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Method and apparatus for ultrasonic continuous, non-invasive blood pressure monitoring

  • US 7,425,199 B2
  • Filed: 09/23/2004
  • Issued: 09/16/2008
  • Est. Priority Date: 12/30/2003
  • Status: Active Grant
First Claim
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1. A method for monitoring of pressure in an arterial lumen, comprising the following steps:

  • (a) converting acquired disturbance propagating waveform information corresponding to energy transmitted and returned from a lumen wall, flow through the lumen and adjacent areas surrounding the lumen, into electrical signals;

    (b) forming at least one spatial covariance matrix of frequency components of the propagating waveform measured at a plurality of locations along the lumen;

    (c) processing the at least one spatial covariance matrix to estimate a velocity of a pulse wave and any reflections traveling through the lumen; and

    ,(d) computing the pressure as a function of the estimated velocity.

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