Methods and equipment for analysing biological signals...

A - Human Necessities – 61 – B

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A61B 5/021 (2006.01) A61B 5/03 (2006.01) G01R 23/16 (2006.01) G06F 3/05 (2006.01) G06F 17/00 (2006.01) G06F 17/14 (2006.01)

Patent

CA 2455395

The invention concerns a system for representing and analysing pressure variables comprising pressure sensors [blood pressure, intracardiac pressure], means for processing signals delivered by said sensors and means for displaying variations of said signals, the processing means including a plurality of inputs for receiving analog signals from different sensors. The invention is characterised in that each input is connected to a sampling circuit supplying a digital signal used by a calculator to carry out processing operations including: re-sampling of the displayed or recorded signals, analysing the frequency of said sampled signal relative to a range of target frequencies recorded in a storage unit, displaying and recording temporal variations of the signals corresponding to slow waves, determining the lag between the slow waves of the signals corresponding to two distinct inputs.

La présente invention concerne un système pour la représentation et l'analyse de variables de pression comportant des capteurs de pression [pression artérielle, pression intracardiaque] , des moyens de traitement des signaux délivrés par lesdits capteurs et des moyens d'affichage des variations desdits signaux, les moyens de traitement comportant une pluralité d'entrées pour recevoir des signaux analogiques provenant de différents capteurs, caractérisé en ce que chaque entrée est raccordée à un circuit d'échantillonnage fournissant un signal numérique exploite par un calculateur pour réaliser des traitements comprenant : le re-échantillonnage des signaux visualises ou enregistres l'analyse de fréquence dudit signal échantillonné par rapport à une gamme de fréquences cibles enregistrées dans une mémoire, pour la visualisation et l'enregistrement des variations temporelles des signaux correspondant aux ondes lentes la détermination du décalage temporelle entre les ondes lentes des signaux correspondant à deux entrées distinctes.

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