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WEARABLE HEMODYNAMIC SENSOR

  • US 20160198955A1
  • Filed: 01/07/2016
  • Published: 07/14/2016
  • Est. Priority Date: 01/08/2015
  • Status: Active Application
First Claim
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1. A method for the continuous non-invasive measurement of hemodynamic parameters within a wearable device comprising:

  • measuring a photoplethysmographic signal disposed on a body part containing an artery using a photoplethysmographic system having;

    at least one light source; and

    at least one light detector generating the photoplethysmographic signal;

    wherein the contact pressure of the photoplethysmographic system can be varied by an actuator;

    wherein the movement of the actuator and the contact pressure is controlled by a control system using at least a part of the photoplethysmographic signal;

    wherein the true pulsatile BP-signal and further calculated hemodynamic parameters are derived from the contact pressure and the photoplethysmographic signal; and

    wherein the hemodynamic parameters are further derived from a transfer function.

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