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:
Jul. 03, 2007
Filed:
Aug. 16, 2005
Esmaiel Kiani-azarbayjany, Laguna Niguel, CA (US);
Mohamed Kheir Diab, Mission Viejo, CA (US);
James M. Lepper, Jr., Trabuco Canyon, CA (US);
Esmaiel Kiani-Azarbayjany, Laguna Niguel, CA (US);
Mohamed Kheir Diab, Mission Viejo, CA (US);
James M. Lepper, Jr., Trabuco Canyon, CA (US);
Masimo Laboratories, Inc., Irvine, CA (US);
Abstract
A blood constituent monitoring method for inducing an active pulse in the blood volume of a patient. The induction of an active pulse results in a cyclic, and periodic change in the flow of blood through a fleshy medium under test. By actively inducing a change of the blood volume, modulation of the volume of blood can be obtained to provide a greater signal to noise ratio. This allows for the detection of constituents in blood at concentration levels below those previously detectable in a non-invasive system. Radiation which passes through the fleshy medium is detected by a detector which generates a signal indicative of the intensity of the detected radiation. Signal processing is performed on the electrical signal to isolate those optical characteristics of the electrical signal due to the optical characteristics of the blood.