Oximetric tonometer with intracranial pressure monitoring...

A - Human Necessities – 61 – B

Patent

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A61B 5/00 (2006.01) A61B 3/16 (2006.01) A61B 5/03 (2006.01) A61B 3/12 (2006.01) A61B 5/0456 (2006.01)

Patent

CA 2335776

A method is disclosed for non-invasive determination of intracranial pressure using an intracranial pressure monitor. The method preferably includes retinal scanning with a retinal scanner of the ocular fundus to determine dioxyhemoglobin saturation within the blood vessels of the retina. Through simultaneous monitoring of the subject cardiac cycle with a cardiac cycle monitor during retinal scanning and measurement of the intraocular pressure, intracranial pressure is determined independent of implanting or adhering the sensing device to the head or neck region of a test subject. The present invention provides valuable diagnostic and postoperative information for medical treatment of injured or diseased patients suffering from closed head injuries, hydrocephalus, and neurological disorders.

L'invention concerne un procédé permettant de connaître de manière non invasive la pression intracrânienne, à l'aide d'un moniteur de la pression intracrânienne. Ce procédé consiste notamment en une lecture d'empreintes rétiniennes, effectuée au moyen d'un dispositif de lecture du fond d'oeil permettant de connaître la saturation en dioxyhémoglobine à l'intérieur des vaisseaux sanguins de la rétine. En contrôlant la période du coeur d'un sujet à l'aide d'un moniteur des périodes du coeur, et en effectuant simultanément une lecture d'empreintes rétiniennes et une mesure de la pression intra-oculaire, on peut connaître la pression intracrânienne sans avoir à implanter ou à fixer le dispositif de détection sur la tête ou le cou du sujet. La présente invention permet notamment d'obtenir de précieuses informations diagnostiques et postopératoires concernant le traitement médical de patients blessés ou malades, souffrant d'un traumatisme crânien fermé, d'hydrocéphalie, ou de troubles neurologiques.

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