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. 23, 1997
Filed:
Jul. 26, 1995
Applicant:
Inventors:
Assignee:
Nihon Kohden Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128677 ; 128681 ; 128687 ;
Abstract
A pressure sensor gathers discrete data representing the pulse amplitude of a pulse wave signal when a cuff pressure is increased and decreased. A RAM stores the discrete data of the pulse amplitude. A CPU processes the discrete data by using a spline function, to thereby generate the data representative of a smooth continuous line passing by points of the pulse amplitude of the discrete data. This process reduces a variation of the pulse amplitude of a pulse wave signal, to thereby minimize a variation of the blood pressure values. An inflection point of the smooth continuous line is used as a diastolic blood pressure value.