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:
Jul. 22, 1997
Filed:
Jun. 06, 1995
Hidehiro Hosaka, Tokyo, JP;
Hiroshi Sakata, Tokyo, JP;
Yoshihiro Sugo, Tokyo, JP;
Takeshi Sohma, Tokyo, JP;
Hiromitsu Kasuya, Tokyo, JP;
Nihon Kohden Corporation, Tokyo, JP;
Abstract
A pulse-wave propagation time basis blood pressure monitor includes a memory for storing an equation describing the relationship between the pulse wave propagation time and the parameter .alpha., input means for entering the blood pressure value for calibration, a time-interval detect reference point detecting means for detecting a reference point for detecting the time interval of a pulse wave in the aorta of a subject; pulse wave detecting means for detecting a pulse wave which appears in the peripheral blood vessel after it appears in the aorta; pulse-wave propagation time measuring section for measuring a pulse wave propagation time from the output signals of the time-interval detect reference point detecting means and the pulse wave detecting means, first computing means for determining the parameter .alpha. proper to the subject on the basis of the general equation stored in the memory by using the pulse wave propagation time for calibration gathered from the subject, second computing means for determining the parameter .beta. to be added in computing a blood pressure value by using the pulse wave propagation time, by using the blood pressure value inputted for calibration, the pulse wave propagation time measured for calibration, and the parameter .alpha. determined by the first computing means, third computing means for computing a blood pressure value by using the measured pulse wave propagation time, and the parameters .alpha. and .beta., and measured data output means for outputting data of the computed blood pressure value.