A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/029 (2006.01) A61B 5/053 (2006.01)
Patent
CA 2352403
The invention relates to an apparatus and a method for deter-mining an approximate value for the stroke volume and the cardiac output of a person's heart. The apparatus and method employ a measured electrical impedance, or admittance, of a part of a person's body, namely, the thorax. This part of a person's body is chosen because its electrical impedance, or admittance, changes with time as a consequence of the peri-odic beating of the heart. Accordingly, the measured electri-cal admittance or impedance can provide information about the performance of the heart as a pump.
L'invention porte sur un appareil et une méthode permettant de calculer la valeur approximative du volume d'éjection systolique et le débit cardiaque d'une personne. L'appareil et la méthode font appel à la mesure de l'impédance ou de l'admittance électrique d'une partie du corps, soit le thorax. Cette partie anatomique a été choisie, car son impédance ou son admittance électrique, varie avec le temps en raison des battements réguliers du coeur. C'est la raison pour laquelle la mesure de l'admittance ou de l'impédance peut fournir des données sur l'efficacité du coeur, en tant que pompe.
Bernstein Donald P.
Osypka Markus J.
Osypka Medical Gmbh
Smart & Biggar
LandOfFree
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