Calibrator

Abstract

A method calibrates a monitor that comprises a non-invasive blood constituent monitor and a traditional measurement system. The non-invasive blood constituent monitor includes a thermal gradient inducing element an analyzer window. A traditional monitor output representing a property of a blood constituent is generated by the traditional measurement system. A non-invasive monitor output representing the property of the whole blood constituent is generated by the non-invasive constituent monitor. The traditional monitor output and the non-invasive monitor output are compared to estimate an amount of error. The non-invasive monitor output is corrected by the amount of error.

1 . A method for calibrating a non-invasive blood constituent monitor connected to a traditional measurement system via a data link, the method comprising: 
 withdrawing an amount of whole blood from a patient;    analyzing a blood constituent in the amount of whole blood with the traditional measurement system and generating a traditional monitor output representing a property of the blood constituent;    placing a thermal gradient inducing element of the non-invasive blood constituent monitor in contact with the skin of the patient;    analyzing the blood constituent in blood within the patient by detecting thermal radiation at selected wavelengths and generating a non-invasive monitor output representing the property of the blood constituent;    comparing the traditional monitor output and the non-invasive monitor output to estimate an error; and    correcting the non-invasive monitor output based on said error.    
     
     
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