Single detector infrared ATR glucose measurement system
First Claim
1. An analyte level measurement device for measuring analyte levels by contacting a skin surface, comprising:
- an infrared source for emitting an IR beam into an ATR plate, the IR beam having components at least in a region of a referencing wavelength and a measuring wavelength, the ATR plate having a measurement surface for contact with the skin surface and for directing the IR beam against the skin surface, at least one IR detector for measuring absorbance of at least the referencing wavelength and the measuring wavelength, and a calculator for determining the analyte level using the measured absorbance of the skin surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A single detector infrared ATR glucose measurement system is disclosed herein. The device uses attenuated total reflection infrared spectroscopy. Preferably, the device is used on a fingertip and compares two specific regions of a measured infrared spectrum to determine the blood glucose level of the user. A single IR detector is utilized along with an alternating filter. This device is especially suitable for monitoring glucose levels in the human body, and is especially beneficial to users having diabetes mellitus. The device and procedure may be used for other analyte materials which exhibit unique mid-IR signatures of the type described herein and that are found in appropriate regions of the outer skin.
-
Citations
33 Claims
-
1. An analyte level measurement device for measuring analyte levels by contacting a skin surface, comprising:
-
an infrared source for emitting an IR beam into an ATR plate, the IR beam having components at least in a region of a referencing wavelength and a measuring wavelength, the ATR plate having a measurement surface for contact with the skin surface and for directing the IR beam against the skin surface, at least one IR detector for measuring absorbance of at least the referencing wavelength and the measuring wavelength, and a calculator for determining the analyte level using the measured absorbance of the skin surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for determining an analyte level from a skin surface of a body, comprising:
-
contacting the skin surface with a surface of an ATR plate;
irradiating the skin surface with an IR beam having components at least in the region of a referencing wavelength and a measuring wavelength through the ATR plate to produce a reflected IR beam indicative of the analyte level in the body;
pulsing the reflected IR beam so as to alternate the referencing wavelength and the measuring wavelength; and
detecting and quantifying the referencing wavelength and the measuring wavelength components in the reflected IR beam as emitted from the skin surface. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
Specification