The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 1990
Filed:
Feb. 23, 1989
Tadashi Murase, Gifu, JP;
Colin Electronics Co., Ltd., Aichi, JP;
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.