Perfusion monitor and system, including specifically...

A - Human Necessities – 61 – B

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Details

A61B 5/00 (2006.01) A61B 5/083 (2006.01) A61B 5/087 (2006.01)

Patent

CA 2489808

The present invention relates to a novel non-invasive perfusion/resistance status monitor system and methods of using the same, and more specifically, a vascular perfusion status monitor system receiving and processing signals from at least two pulse oximeter probes, where each of the at least two pulse oximeter probes are situated at advantageously different locations in a patient. Novel pulse oximeter probes are configured to be placed, respectively, across the lip or cheek, across the septum or nares of the nose and on the tongue. These probes are fabricated to provide signals to estimate arterial oxygen saturation. Conventional oximeter probes also can be configured to function according to the novel methods of determining differences in peripheral blood flow and/or resistance described herein. The present invention also relates to a combined nasal pulse oximeter probe/nasal cannula. The present invention also relates to other devices that combine a pulse oximeter probe with a device supplying oxygen or other oxygen-containing gas to a person in need thereof. In certain embodiments, an additional limitation of a control means to adjust the flow rate of such gas is provided, where such control is directed by the blood oxygen saturation data obtained from the pulse oximeter probe.

L'invention concerne un système régulateur d'état de perfusion/résistance non invasif, et des procédés d'utilisation correspondants, et plus précisément un système régulateur d'état de perfusion vasculaire qui reçoit et traite les signaux provenant d'au moins deux sondes de sphygmo-oxymètre, chacune située en des points différents du corps du patient, selon l'avantage recherché. La configuration des sondes permet de placer celles-ci, respectivement, sur la lèvre ou la joue, sur la cloison des fosses nasales ou les narines, et sur la langue. Ces sondes fournissent les signaux qui permettent d'évaluer la saturation artérielle en oxygène. On peut aussi établir des sondes d'oxymètre classiques en configuration compatible avec les procédés décrits, qui permettent de déterminer les écarts de flux de sang périphérique et/ou de résistance. L'invention concerne également une combinaison canule/sonde nasale de sphygmo-oxymètre. L'invention concerne par ailleurs d'autres dispositifs combinant une sonde de sphygmo-oxymètre et un respirateur qui fournit de l'oxygène ou autre gaz contenant de l'oxygène à l'utilisateur. Selon certaines variantes, on prévoit en plus un limitateur dans le système régulateur, pour adapter le débit du gaz fourni, et la régulation repose alors sur les données de saturation du sang en oxygène recueillies par la sonde de sphygmo-oxymètre.

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