Document Type

Patent

Patent Number

US Patent 6,061,582

Patent agency

United States Patent and Trademark Office

Publication Date

5-9-2000

Assignee

University of Iowa Research Foundation (Iowa City, IA, US) ; Ohio University (Athens, OH)

Application Number

08/860,850

Date Filed

1997-06-11

Total Pages

19 page

Abstract

Non-invasive measurements of physiological chemicals such as glucose in a test subject are made using infrared radiation and a signal processing system. The level of a selected physiological chemical in the test subject is determined in a non-invasive and quantitative manner by a method comprising the steps of: (a) irradiating a portion of the test subject with near infrared radiation; (b) collecting data concerning the irradiated light on the test subject; (c) digitally filtering the collected data to isolate a portion of the data indicative of the physiological chemical; and (d) determining the amount of physiolgocial chemical in the test subject by applying a defined mathematical model to the digitally filtered data. The collected data is in the form of either an absorbance spectrum or an interferogram.

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URL

https://ir.uiowa.edu/patents/237