Systems and methods for intravascular cooling

Details Systems and methods for intravascular cooling Systems and methods for intravascular cooling

A - Human Necessities

61

F

A61F 7/12 (2006.01)

Patent

CA 2634683

Methods and systems for infusing a cooled infusate to a target location in a patient are described. A temperature of the blood and infusate admixture upstream of the catheter as well as at other locations along the catheter may be monitored and a feedback system utilized to control the volume, temperature, and/or infusion rate of the infusate so as to achieve a predetermined temperature at the target location. The system may monitor or calculate hematocrit upstream of the catheter and adjust infusion so as to provide sufficient oxygenation of the blood and infusate admixture . The system may also monitor reflux of the infusate past a distal end of the catheter and reduce infusion upon the detection of reflux.

L~invention concerne des méthodes et systèmes pour infuser un soluté intraveineux froid dans un lieu cible d~un patient. Une température du sang et du soluté intraveineux ajouté en amont du cathéter ainsi qu'en d~autres lieux le long du cathéter peut être contrôlée et un système de rétro-information est utilisé pour contrôler le volume, la température et/ou le taux de perfusion du soluté intraveineux afin d~atteindre une température prédéterminée au lieu cible. Le système peut contrôler ou calculer l'hématocrite en amont du cathéter et ajuster la perfusion afin de suppléer une oxygénation suffisante du sang et du soluté intraveineux ajouté. Le système peut aussi contrôler un reflux du soluté intraveineux au-delà d~une extrémité distale du cathéter et réduire la perfusion suite à la détection d~un reflux.

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