Patent ID: 7815576
Filing Date: 2010-10-19
Classification: A61B

Abstract:
1. A method for determining haemodynamic parameters from patient pressure signals, the method comprising: a) receiving patient pressure signals from a measurement receiver to which vessel pressures measured in the body of a patient are supplied; b) selecting and determining a patient pressure signal as a reference pressure signal from the patient pressure signals sent from the measurement receiver; c) dividing the patient pressure signals and the reference pressure signal into segments; d) examining the patient pressure signal segments and the reference pressure signal segments in a time range for artifacts with time range methods by using a first derivative with respect to time of the patient pressure signals and the reference pressure signal wherein artifact-afflicted segments are discarded; e) determining a start and end of a heart beat on at least one of the patient pressure signals using the reference pressure signal; and f) using non-discarded segments of the patient pressure signals for calculating haemodynamic parameters.