Isolated layer pulse oximetry

A - Human Necessities – 61 – B

Patent

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Details

A61B 5/00 (2006.01) G01N 21/31 (2006.01) G01N 21/47 (2006.01) G01N 21/49 (2006.01)

Patent

CA 2215163

An apparatus of and method for measuring arterial blood oxygen saturation at a particular tissue level of interest. Visible and near infrared radiation is emitted into a patient at the measurement site using two different wavelengths. Detection at two different detection sites permits rejection of oxygen saturation at undesired tissue levels.

Cette invention concerne un appareil ainsi qu'un procédé permettant de mesurer la saturation en oxygène du sang dans une artère au niveau d'un tissu d'un intérêt particulier. Des rayonnements, dans le spectre visible et proche de l'infrarouge, sont émis dans le corps du patient au niveau du site de mesure en utilisant deux longueurs d'ondes différentes. La détection en deux sites de détection différents permet d'éliminer la saturation en oxygène au niveau de tissus où elle n'est pas souhaitée.

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