Abstract: A method and apparatus for measuring a pulse transit time (PTT) value of a subject, comprise measuring a first arterial pressure pulse arrival time (PAT) and measuring a second PAT value; calculating a PTT value from the difference between the first PAT value and the second PAT value; processing a sequence of electrical impedance tomography (EIT) images to identify at least one region of interest (ROI); and estimating at least one of the first and second PAT value from the variation of impedance value determined from the at least one ROI. The method allows for the non-invasive and continuous measurement of the PTT value and arterial blood pressures.
Type:
Grant
Filed:
January 11, 2013
Date of Patent:
June 19, 2018
Assignee:
CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA-RECHERCHE AT DÉVELOPPEMENT
Inventors:
Josep Sola i Caros, Josef X. Brunner, Damien Farrario, Andrew Adler