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:
Jan. 30, 2001
Filed:
Mar. 25, 1999
Applicant:
Inventors:
Hans Schöllermann, late of Grenzach-Wyhlen, DE;
Patrick Eberhard, Allschwil, CH;
Assignee:
Kontron Instruments AG, Schlieren, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 5/00 ;
U.S. Cl.
CPC ...
A61B 5/00 ;
Abstract
In the proposed method for detecting spurious signals caused by movements of the patient or his environment in the pulse oximetric measurement of the arterial oxygen saturation, the intensity of the light emerging from the test specimen is measured by two photodiodes (,). The signals (S,, S,) generated at these photodiodes (,) are normalized to equal levels of their DC components. Finally, to detect spurious signals caused by movements, the differences (&Dgr;S,) of these normalized signals (S,, S,) are formed.