Extracorporeal circulation apparatus and method for...

A - Human Necessities – 61 – M

Patent

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A61M 1/36 (2006.01)

Patent

CA 2351847

The present invention is directed to an extracorporeal circulation apparatus used for a selective temperature controlling method in which a temperature of an object is kept at a predetermined temperature. The apparatus includes: (A) a fluid replacement supply unit which quantitatively supplies a fluid replacement of which temperature has been adjusted into a blood vessel; (B) a blood concentration unit which quantitatively withdraws blood dilated by the fluid replacement from a blood vessel and concentrates the withdrawn diluted blood; and (C) a blood supply unit which controls a temperature of the blood which has been concentrated and quantitatively supplies the concentrated blood into a blood vessel, the blood concentration unit comprising a diluted blood temperature sensor which measures a temperature of the withdrawn diluted blood, and the fluid replacement supply unit including a means which controls a temperature of the fluid replacement to be supplied based on a different extent between the measured diluted blood temperature and the predetermined temperature of the object.

L'invention concerne un dispositif de circulation extra-corporelle, utilisé dans le cadre d'un procédé de contrôle de température d'isolation, afin de maintenir un objet à une température prédéterminée. Le dispositif comprend (A) une unité tenant lieu de source de liquide de réalimentation qui permet de mesurer le liquide de réalimentation fourni sous température contrôlée et destiné à être injecté dans un vaisseau sanguin, (B) une unité de concentration sanguine, mesurant le sang qui est dilué au moyen du liquide de réalimentation, et guidant le sang depuis le vaisseau sanguin considéré aux fins de concentration, et (C) une unité d'alimentation sanguine mesurant le sang concentré, aux fins d'injection dans le vaisseau sanguin, sous contrôle de la température sanguine. L'unité de concentration est équipée d'un capteur de température de sang dilué permettant de mesurer la température du sang dilué guidé, et l'unité qui fournit le liquide de réalimentation est équipée d'un système de contrôle de la température du liquide fourni, ce système évaluant la différence entre la température mesurée du sang dilué et une température prédéterminée de l'objet.

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