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:
May. 30, 1989
Filed:
Aug. 14, 1987
Applicant:
Inventors:
Hans-Dietrich Polaschegg, Oberursel, DE;
Detlef Westphal, Oberursel, DE;
Klaus Metzner, Friedrichsdorf, DE;
Assignee:
Fresenius AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; A61B / ; G06G / ;
U.S. Cl.
CPC ...
324439 ; 128635 ; 204406 ; 324 711 ; 324441 ; 36441307 ; 436 70 ;
Abstract
There is described a method and apparatus for the determination of hematocrit levels in which both the conductivity of whole blood and the conductivity of blood plasma are determined together. While a conductivity cell (18) is being used for the determination of the conductivity of whole blood, the conductivity of plasma is calculated in a computer (30) with the aid of ion selective electrodes (14, 16) from the sodium or potassium concentrations.