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:
Aug. 07, 1990
Filed:
May. 23, 1988
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128696 ; 128698 ; 128706 ; 128710 ;
Abstract
The method and apparatus particularly are applicable for displaying the fetal R-wave with respect to the maternal R-wave, and comprise the steps of generating a first electrical signal corresponding to the second derivative of the composite signal (maternal R-wave); generating a second electrical signal corresponding to the second derivative of the composite signal after the specified component has been removed; subtracting the second electrical signal from the first electrical signal to produce a third electrical signal; and utilizing the third electrical signal for indicating the repetition intervals (fetal R-waves) of the specified component.