Method and apparatus for measuring blood pressure

Surgery – Truss – Pad

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128681, A61B 502

Patent

active

049170988

ABSTRACT:
A method and an apparatus for determining blood pressure of a subject based on heartbeat-synchronous pulses, the method including the steps of detecting the heartbeat-synchronous pulses as pressure in an inflatable cuff set on a body portion of a subject is varied, preparing a plural sets of point data each of which represents a pressure of the cuff at the time of detection of a corresponding one of the pulses and a magnitude of the corresponding one pulse, plotting, based on the prepared plural sets of point data, a plurality of points in a two-dimensional table defined by a first axis indicative of the pressure of the cuff and a second axis indicative of the magnitude of the pulses, selecting a predetermined number of consecutive points from the plotted points such that the predetermined number is not less than three, determining a regression line of the selected consecutive points, such that each of the at least one point is plotted with a statistically high probability inside a corresponding one of the at least one prediction interval, and determining blood pressure of the subject based on the at least one point, if the each of the at least one point is plotted outside the corresponding one of the at least one prediction interval.

REFERENCES:
patent: 4262675 (1981-04-01), Kubo et al.
patent: 4427013 (1984-01-01), Nunn et al.
patent: 4796184 (1989-01-01), Bahr et al.
patent: 4799492 (1989-01-01), Nelson
patent: 4830019 (1989-05-01), Shirasaki et al.

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