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Abstract

A non-invasive monitoring system using radiated energy to identify cardiac and respiratory waveforms in patients is discussed. The monitoring system illuminates a subject in radiated energy and then detects the reflected radiated energy caused by respiratory and/or cardiac functions. The detected reflections are used to plot a two-dimensional waveform. The waveforms represent the rise and fall of a detected signal (the reflected energy) over time and are indicative of the small movements of the patient's chest and abdomen that are associated with cardiac and respiratory function. Different implementations of the monitoring system use laser or ultrasonic energy to capture breathing and cardiac waveforms for analysis. The waveforms may be used to diagnose the effectiveness of prescribed sleep medication, perform remote line of sight monitoring from a remote location, identify crying waveforms for babies and infants, identify cardiac waveforms in a non-invasive manner and identify seizure and tremor activity.

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First Claim