Surgery – Truss – Pad
Patent
1990-10-31
1993-09-07
Cohen, Lee S.
Surgery
Truss
Pad
128691, A61B 502
Patent
active
052419649
ABSTRACT:
A noninvasive arterial pressure monitor provides calibrated, continuous pressure waveform and beat-by-beat pressure values with no occlusion of an artery during an extended monitoring period. Noninvasive doppler sensors are secured over a major artery. Signals from the sensors are used to mathematically characterize the artery. The time-varying arterial resonant frequency is correlated to blood pressure throughout the cardiac cycle. Doppler sensors provide bi-directional flow velocity waveforms from which arterial resonant frequency may be calculated. A calibration cuff is used infrequently to calibrate the system to units of pressure.
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Cohen Lee S.
Lacyk J. P.
Medwave, Incorporated
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