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:
Oct. 02, 1990
Filed:
Oct. 14, 1988
Applicant:
Inventors:
Brendan Conlon, Elm Grove, WI (US);
James A Devine, Waukesha, WI (US);
James A Dittmar, Waukesha, WI (US);
Assignee:
Criticare Systems, Inc., Waukesha, WI (US);
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128633 ; 128666 ; 128700 ;
Abstract
A pulse oximeter and method of determining the oxygen saturation level of a patient's blood wherein a heartbeat related signal is used, as a reference to guide the averaging of optical pulse waveforms. The oximeter and method assign different weighting to different optical pulses based upon the amplitude of new pulse waveforms and the degree of similarity between it and the preceding waveform. A composite, averaged pulse waveform is then used in computing oxygen saturation level.