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:
Dec. 17, 1996
Filed:
Jul. 26, 1995
Nihon Kohden Corporation, Tokyo, JP;
Abstract
A CPU of a control unit receives a blood pressure pulse wave signal, through an AC amplifier and an A/D convertor. The CPU differentiates, for the smoothing of the waveform, the heart pulse wave signal every step of decreasing the pressure in the cuff, thereby detecting a descending zero-cross point m of the differential wave. Further, the CPU detects a slope peak point P' while tracing back from the descending zero-cross point m. The CPU determines the peak points of the pulse wave by using the heart pulse wave signal that is not differentiated. Thereafter, the CPU determines the base points of the pulse wave tracing back from the maximum-slope point, determines the peak value of the heart pulse wave signal in all the steps of decreasing the pressure in the cuff, and finally computes a systolic blood pressure and a diastolic blood pressure.