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Blood pressure algorithm

  • US 7,927,283 B2
  • Filed: 03/20/2008
  • Issued: 04/19/2011
  • Est. Priority Date: 03/20/2007
  • Status: Expired due to Fees
First Claim
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1. A method for measuring non-invasive blood pressure from an oscillometric signal and a cuff pressure signal, said method implemented in a medical apparatus, comprising:

  • (a) calculating a pulse pressure signal by subtracting an upper and a lower envelope of said oscillometric signal based on rank-order filters applied to said oscillometric signals; and

    (b) calculating a mean arterial pressure, a systolic blood pressure, and a diastolic blood pressure from said oscillometric signal, said cuff pressure signal, and a plurality of thresholds using a device with at least one processor.

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