Surgery – Truss – Pad
Patent
1993-09-24
1995-09-26
Sykes, Angela D.
Surgery
Truss
Pad
356 39, A61B 500
Patent
active
054527163
ABSTRACT:
In vivo measurement of the concentration of a substance in the blood, e.g. glucose, despite varying concentrations of interfering components, e.g. protein and fat, by measuring the absorption of infra red light at a pair of selected wavelengths in the range 1-40 .mu.m for each of the substance and the components one being a measuring wavelength at which the substance or component show a specific absorption and another being a reference wavelength at which the substance or component shows a low absorption, at least one wavelength being selected from the range 1-10 .mu.m. The absorption is measured using a detector providing a computable electric signal corresponding to the absorbed amount of infra red radiation at the respective wavelengths. The electric signals are used to calculate the concentration of the substance taking into account the absorption caused by the interfering components.
REFERENCES:
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patent: 4427889 (1984-01-01), Muller
patent: 4655225 (1987-04-01), Dahne et al.
patent: 4975581 (1990-12-01), Robinson et al.
patent: 5137023 (1992-08-01), Mendelson et al.
patent: 5313941 (1994-05-01), Braig et al.
Lambiris Elias J.
Novo Nordisk A S
Sykes Angela D.
Zelson Steve T.
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