Patent ID: 6258037
Filing Date: 2001-07-10
Classification: A61B

Abstract:
A method for use in measuring blood pressure, comprisingdetecting mixed signals during time periods, the mixed signals including biological signals indicative of blood pressure and noise signals not indicative of blood pressure,evaluating the mixed signals over a plurality of the time periods to aid in discriminating the biological signals from the noise signals,the evaluating comprising assembling the mixed signals detected at corresponding times during the plurality and analyzing the assembled mixed signals to aid in discriminating the biological signals from the noise signals,the analyzing comprising developing a candidate blood pressure signal based on the biological signals indicative of blood pressure in the assembled mixed signals, and determining whether the candidate blood pressure signal should be used to measure blood pressure,the determining comprising determining whether the candidate blood pressure signal should be used to measure blood pressure based on whether it exceeds a plurality of combinations of different thresholds, andassigning a score to the candidate blood pressure signal that indicates a likelihood that the candidate blood pressure signal is valid blood pressure signal, the score being based on which thresholds are exceeded.