Method and equipment for detecting physico-chemical parameters

Details Method and equipment for detecting physico-chemical parameters Method and equipment for detecting physico-chemical parameters

1996-10-04

1998-11-03

Bahr, Jennifer

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

422 8209, 436 68, A61B 500, G01N 2131

Patent

active

058301348

ABSTRACT:
Physico-chemical parameters, such as pH, pO.sub.2, pCO.sub.2, % O.sub.2, sat, etc., are determined with the use of a sensitive medium, such as a chromophore, having at least one optical property the profile of the spectrum whereof over a predetermined wavelength spectrum of optical radiation varies as a function of the parameter to be determined. The profile of the spectrum is analysed, for example by means of polychromatic sensor means acting on the medium's spectrum, which is preferably substantially continuous, so as to enable the analysis to be carried out with the aid of a profile-recognition function by typical pattern-recognition operations. The determination is thus rendered largely independent of numerous perturbing factors such as those resulting from the use of partially disposable monitoring units, thus eliminating the need for calibration steps.

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