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:
Mar. 02, 1993
Filed:
Jul. 23, 1990
Applicant:
Inventors:
Assignee:
Seiko Instruments Inc., , JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128687 ; 128689 ; 307234 ;
Abstract
A photoelectric pulsation type pulsimeter irradiates the ray of light to a capillary blood vessel of a finger tip or the like and detects the level of the reflected ray of light changing with the pulsation as the pulsation. The present invention improves stability of the pulse rate display by disposing pulse width evaluation means between a pulsation detection circuit for detecting the pulsation and pulsation calculation means for measuring the period of the pulsation signal and calculating the pulse rate per minute. The pulse width evaluation means evaluate the pulse signal outputted from the pulsation detection circuit and the pulse rate calculated by the pulsation calculation means.