×

Non-invasive intravascular volume index monitor

  • US 9,579,039 B2
  • Filed: 01/10/2012
  • Issued: 02/28/2017
  • Est. Priority Date: 01/10/2011
  • Status: Active Grant
First Claim
Patent Images

1. A non-invasive multi-parameter patient monitoring system configured to detect edema for a patient, the non-invasive multi-parameter patient monitoring system comprising:

  • a sensor having at least one emitter and an associated detector configured to attach to a tissue site, said detector providing a detector signal responsive to an intensity of energy from said emitter after it has passed through said tissue site; and

    a patient monitor comprising;

    a sensor interface configured to receive said detector signal from said sensor; and

    a processor configured to;

    determine a plurality of total hemoglobin (SpHb) values over a time period based at least in part on a plurality of detector signals received over the time period;

    determine a plurality of intravascular volume index (IVI) levels of a patient over the time period based at least in part on the plurality of determined SpHb value;

    determine a patient-specific IVI threshold based at least in part on the determined plurality of IVI levels;

    determine a subsequent IVI level based at least in part on a SpHb value determined subsequent to the plurality of SpHb values; and

    detect and/or monitor a progress of edema based at least in part on a determination that the subsequent WI level does not satisfy the determined patient-specific IVI threshold.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×