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Method for real time monitoring of blood volume in a filter

  • US 6,548,017 B2
  • Filed: 06/21/1999
  • Issued: 04/15/2003
  • Est. Priority Date: 03/25/1997
  • Status: Expired due to Term
First Claim
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1. A method for monitoring a volume of blood in a blood filter, the method comprising:

  • (a) measuring a blood parameter downstream of a blood side of the filter;

    (b) determining a blood flow rate through the blood side of the filter;

    (c) changing a filtration rate of the filter to change the blood parameter;

    (d) measuring a resulting change of the blood parameter downstream of the blood side of the filter; and

    (e) calculating the blood volume from the resulting change of the blood parameter and the blood flow rate.

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