MÉTHODE ET DISPOSITIF D'OPTIMISATION DE LA PRÉCISION DES MESURES IN VIVO LORS DE MESURES INVASIVES DE LA PRESSION ARTÉRIELLE EN UTILISANT UN SYSTÈME MANOMÈTRE-CATHÉTER À COLONNE LIQUIDIENNE
Method and device for optimizing the measurement accuracy in vivo when measuring invasive blood pressure using a fluid-filled catheter-manometer system including a medical signal processing device； a catheter； a pressure line connected to the catheter； a pressure transducer-flush system unit connected to the pressure line and to a pressurised storage bag, and having an integrated pressure transducer and an integrated flush system, the pressure transducer having a membrane to convert a pressure signal into an electric signal that is transmitted to the medical signal processing device, the flush system ensuring that a continuous flush from the storage bag to the catheter is maintained, the flush system having a manually operable element configured for temporarily, briefly opening and closing the flush system. The following values are calculated: a natural frequency, damping coefficient, a dynamic response diagram using the calculated natural frequency and damping coefficient, and an inverted dynamic response diagram used as a filter to process a signal measured by the pressure transducer； and afterwards, an invasive blood pressure signal and invasive blood pressure values are calculated from the processed signal.L'invention concerne une méthode et un dispositif permettant de corriger le diagramme de réponse dynamique d'un système manomètre-cathéter à colonne liquidienne au moyen d'un algorithme qui calcule, à partir de l'étape réponse, un "amplificateur" ou un "filtre" avec lequel le signal de mesure est traité pour obtenir une réponse dynamique constante, et donc une précision de mesure optimale.
