Method and apparatus for the non-invasive determination of the c

Details Method and apparatus for the non-invasive determination of the c Method and apparatus for the non-invasive determination of the c

1998-03-10

2000-07-04

Winakur, Eric F.

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

600336, 600479, A61B 500

Patent

active

06083157&

ABSTRACT:
A method of determining the concentration of a component from the intensity of electromagnetic waves with at least two selected wavelengths which are reflected by human tissue or transmitted through human tissue comprises the step of converting first intensities of the received electromagnetic waves into at least one first and one second electric signal. Following this, a continuous first temporal average value of the first signal and a continuous second temporal average value of the second signal are formed. A first alternating component is continuously determined from said first signal and said first average value, whereas a second alternating component is continuously determined from said second signal and said second average value. Subsequently, a continuous ratio is determined from said first and second signals as well as from said first and second continuous temporal average values, with the exception of regions lying close to the zero passages of the alternating components. Finally, the concentration of the component is derived from said continuous ratio or from the integrated ratio derived from the integrated alternating components.

REFERENCES:
patent: 4824242 (1989-04-01), Frick et al.
patent: 5216598 (1993-06-01), Branstetter et al.
patent: 5285782 (1994-02-01), Prosser

Affiliated with

Also associated with

Rating

Method and apparatus for the non-invasive determination of the c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the non-invasive determination of the c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the non-invasive determination of the c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1481441