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New approaches to fairly old noninvasive cardiology tools, based on studying low frequency vibrations created by the heart on the body, were reviewed. These signals were divided and studied in two categories and compared in their capability for estimation of hemodynamic parameters. In particular one representative signal of each category, seismocardiogram and ultra-low frequency ballistocardiogram,...
This paper deals with an Intra-Aortic Balloon Pump (IABP) and Artificial Heart (AH) using linear pulse motors (LPMs). The device characteristics may be summarized as follows. The maximum static thrusts of the LPM for the IABP and the LPM for the AH were 530 N and 107 N respectively. The kinetic thrusts of the LPMs for the IABP and for the AH were 350 N and 67 N respectively. The target thrust values...
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